forked from KolibriOS/kolibrios
3920 lines
129 KiB
C
3920 lines
129 KiB
C
/*
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* utils for libavcodec
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* Copyright (c) 2001 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* utils.
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*/
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#include "config.h"
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#include "libavutil/atomic.h"
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#include "libavutil/attributes.h"
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/bprint.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/crc.h"
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#include "libavutil/frame.h"
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#include "libavutil/internal.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/mem_internal.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/samplefmt.h"
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#include "libavutil/dict.h"
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#include "avcodec.h"
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#include "libavutil/opt.h"
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#include "me_cmp.h"
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#include "mpegvideo.h"
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#include "thread.h"
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#include "frame_thread_encoder.h"
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#include "internal.h"
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#include "raw.h"
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#include "bytestream.h"
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#include "version.h"
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#include <stdlib.h>
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#include <stdarg.h>
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#include <limits.h>
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#include <float.h>
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#if CONFIG_ICONV
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# include <iconv.h>
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#endif
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#if HAVE_PTHREADS
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#include <pthread.h>
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#elif HAVE_W32THREADS
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#include "compat/w32pthreads.h"
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#elif HAVE_OS2THREADS
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#include "compat/os2threads.h"
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#endif
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#include "libavutil/ffversion.h"
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const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
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#if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
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static int default_lockmgr_cb(void **arg, enum AVLockOp op)
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{
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void * volatile * mutex = arg;
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int err;
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switch (op) {
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case AV_LOCK_CREATE:
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return 0;
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case AV_LOCK_OBTAIN:
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if (!*mutex) {
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pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
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if (!tmp)
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return AVERROR(ENOMEM);
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if ((err = pthread_mutex_init(tmp, NULL))) {
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av_free(tmp);
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return AVERROR(err);
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}
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if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
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pthread_mutex_destroy(tmp);
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av_free(tmp);
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}
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}
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if ((err = pthread_mutex_lock(*mutex)))
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return AVERROR(err);
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return 0;
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case AV_LOCK_RELEASE:
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if ((err = pthread_mutex_unlock(*mutex)))
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return AVERROR(err);
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return 0;
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case AV_LOCK_DESTROY:
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if (*mutex)
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pthread_mutex_destroy(*mutex);
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av_free(*mutex);
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avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
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return 0;
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}
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return 1;
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}
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static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
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#else
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static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
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#endif
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volatile int ff_avcodec_locked;
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static int volatile entangled_thread_counter = 0;
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static void *codec_mutex;
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static void *avformat_mutex;
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void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
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{
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uint8_t **p = ptr;
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if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
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av_freep(p);
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*size = 0;
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return;
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}
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if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
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memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
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}
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void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
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{
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uint8_t **p = ptr;
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if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
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av_freep(p);
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*size = 0;
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return;
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}
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if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
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memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
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}
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/* encoder management */
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static AVCodec *first_avcodec = NULL;
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static AVCodec **last_avcodec = &first_avcodec;
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AVCodec *av_codec_next(const AVCodec *c)
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{
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if (c)
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return c->next;
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else
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return first_avcodec;
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}
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static av_cold void avcodec_init(void)
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{
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static int initialized = 0;
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if (initialized != 0)
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return;
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initialized = 1;
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if (CONFIG_ME_CMP)
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ff_me_cmp_init_static();
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}
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int av_codec_is_encoder(const AVCodec *codec)
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{
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return codec && (codec->encode_sub || codec->encode2);
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}
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int av_codec_is_decoder(const AVCodec *codec)
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{
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return codec && codec->decode;
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}
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av_cold void avcodec_register(AVCodec *codec)
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{
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AVCodec **p;
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avcodec_init();
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p = last_avcodec;
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codec->next = NULL;
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while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
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p = &(*p)->next;
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last_avcodec = &codec->next;
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if (codec->init_static_data)
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codec->init_static_data(codec);
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}
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#if FF_API_EMU_EDGE
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unsigned avcodec_get_edge_width(void)
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{
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return EDGE_WIDTH;
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}
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#endif
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#if FF_API_SET_DIMENSIONS
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void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
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{
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int ret = ff_set_dimensions(s, width, height);
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if (ret < 0) {
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av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
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}
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}
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#endif
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int ff_set_dimensions(AVCodecContext *s, int width, int height)
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{
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int ret = av_image_check_size(width, height, 0, s);
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if (ret < 0)
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width = height = 0;
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s->coded_width = width;
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s->coded_height = height;
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s->width = FF_CEIL_RSHIFT(width, s->lowres);
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s->height = FF_CEIL_RSHIFT(height, s->lowres);
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return ret;
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}
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int ff_set_sar(AVCodecContext *avctx, AVRational sar)
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{
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int ret = av_image_check_sar(avctx->width, avctx->height, sar);
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if (ret < 0) {
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av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
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sar.num, sar.den);
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avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
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return ret;
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} else {
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avctx->sample_aspect_ratio = sar;
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}
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return 0;
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}
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int ff_side_data_update_matrix_encoding(AVFrame *frame,
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enum AVMatrixEncoding matrix_encoding)
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{
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AVFrameSideData *side_data;
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enum AVMatrixEncoding *data;
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side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
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if (!side_data)
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side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
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sizeof(enum AVMatrixEncoding));
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if (!side_data)
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return AVERROR(ENOMEM);
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data = (enum AVMatrixEncoding*)side_data->data;
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*data = matrix_encoding;
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return 0;
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}
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void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
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int linesize_align[AV_NUM_DATA_POINTERS])
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{
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int i;
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int w_align = 1;
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int h_align = 1;
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AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
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if (desc) {
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w_align = 1 << desc->log2_chroma_w;
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h_align = 1 << desc->log2_chroma_h;
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}
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switch (s->pix_fmt) {
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case AV_PIX_FMT_YUV420P:
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case AV_PIX_FMT_YUYV422:
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case AV_PIX_FMT_YVYU422:
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case AV_PIX_FMT_UYVY422:
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case AV_PIX_FMT_YUV422P:
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case AV_PIX_FMT_YUV440P:
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case AV_PIX_FMT_YUV444P:
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case AV_PIX_FMT_GBRP:
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case AV_PIX_FMT_GBRAP:
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case AV_PIX_FMT_GRAY8:
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case AV_PIX_FMT_GRAY16BE:
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case AV_PIX_FMT_GRAY16LE:
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case AV_PIX_FMT_YUVJ420P:
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case AV_PIX_FMT_YUVJ422P:
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case AV_PIX_FMT_YUVJ440P:
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case AV_PIX_FMT_YUVJ444P:
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case AV_PIX_FMT_YUVA420P:
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case AV_PIX_FMT_YUVA422P:
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case AV_PIX_FMT_YUVA444P:
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case AV_PIX_FMT_YUV420P9LE:
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case AV_PIX_FMT_YUV420P9BE:
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case AV_PIX_FMT_YUV420P10LE:
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case AV_PIX_FMT_YUV420P10BE:
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case AV_PIX_FMT_YUV420P12LE:
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case AV_PIX_FMT_YUV420P12BE:
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case AV_PIX_FMT_YUV420P14LE:
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case AV_PIX_FMT_YUV420P14BE:
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case AV_PIX_FMT_YUV420P16LE:
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case AV_PIX_FMT_YUV420P16BE:
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case AV_PIX_FMT_YUVA420P9LE:
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case AV_PIX_FMT_YUVA420P9BE:
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case AV_PIX_FMT_YUVA420P10LE:
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case AV_PIX_FMT_YUVA420P10BE:
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case AV_PIX_FMT_YUVA420P16LE:
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case AV_PIX_FMT_YUVA420P16BE:
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case AV_PIX_FMT_YUV422P9LE:
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case AV_PIX_FMT_YUV422P9BE:
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case AV_PIX_FMT_YUV422P10LE:
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case AV_PIX_FMT_YUV422P10BE:
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case AV_PIX_FMT_YUV422P12LE:
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case AV_PIX_FMT_YUV422P12BE:
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case AV_PIX_FMT_YUV422P14LE:
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case AV_PIX_FMT_YUV422P14BE:
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case AV_PIX_FMT_YUV422P16LE:
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case AV_PIX_FMT_YUV422P16BE:
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case AV_PIX_FMT_YUVA422P9LE:
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case AV_PIX_FMT_YUVA422P9BE:
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case AV_PIX_FMT_YUVA422P10LE:
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case AV_PIX_FMT_YUVA422P10BE:
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case AV_PIX_FMT_YUVA422P16LE:
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case AV_PIX_FMT_YUVA422P16BE:
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case AV_PIX_FMT_YUV440P10LE:
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case AV_PIX_FMT_YUV440P10BE:
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case AV_PIX_FMT_YUV440P12LE:
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case AV_PIX_FMT_YUV440P12BE:
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case AV_PIX_FMT_YUV444P9LE:
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case AV_PIX_FMT_YUV444P9BE:
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case AV_PIX_FMT_YUV444P10LE:
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case AV_PIX_FMT_YUV444P10BE:
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case AV_PIX_FMT_YUV444P12LE:
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case AV_PIX_FMT_YUV444P12BE:
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case AV_PIX_FMT_YUV444P14LE:
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case AV_PIX_FMT_YUV444P14BE:
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case AV_PIX_FMT_YUV444P16LE:
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case AV_PIX_FMT_YUV444P16BE:
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case AV_PIX_FMT_YUVA444P9LE:
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case AV_PIX_FMT_YUVA444P9BE:
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case AV_PIX_FMT_YUVA444P10LE:
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case AV_PIX_FMT_YUVA444P10BE:
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case AV_PIX_FMT_YUVA444P16LE:
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case AV_PIX_FMT_YUVA444P16BE:
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case AV_PIX_FMT_GBRP9LE:
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case AV_PIX_FMT_GBRP9BE:
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case AV_PIX_FMT_GBRP10LE:
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case AV_PIX_FMT_GBRP10BE:
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case AV_PIX_FMT_GBRP12LE:
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case AV_PIX_FMT_GBRP12BE:
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case AV_PIX_FMT_GBRP14LE:
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case AV_PIX_FMT_GBRP14BE:
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case AV_PIX_FMT_GBRP16LE:
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case AV_PIX_FMT_GBRP16BE:
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w_align = 16; //FIXME assume 16 pixel per macroblock
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h_align = 16 * 2; // interlaced needs 2 macroblocks height
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break;
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case AV_PIX_FMT_YUV411P:
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case AV_PIX_FMT_YUVJ411P:
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case AV_PIX_FMT_UYYVYY411:
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w_align = 32;
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h_align = 16 * 2;
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break;
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case AV_PIX_FMT_YUV410P:
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if (s->codec_id == AV_CODEC_ID_SVQ1) {
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w_align = 64;
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h_align = 64;
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}
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break;
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case AV_PIX_FMT_RGB555:
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if (s->codec_id == AV_CODEC_ID_RPZA) {
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w_align = 4;
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h_align = 4;
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}
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break;
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case AV_PIX_FMT_PAL8:
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case AV_PIX_FMT_BGR8:
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case AV_PIX_FMT_RGB8:
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if (s->codec_id == AV_CODEC_ID_SMC ||
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s->codec_id == AV_CODEC_ID_CINEPAK) {
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w_align = 4;
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h_align = 4;
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}
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if (s->codec_id == AV_CODEC_ID_JV) {
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w_align = 8;
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h_align = 8;
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}
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break;
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case AV_PIX_FMT_BGR24:
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if ((s->codec_id == AV_CODEC_ID_MSZH) ||
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(s->codec_id == AV_CODEC_ID_ZLIB)) {
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w_align = 4;
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h_align = 4;
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}
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break;
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case AV_PIX_FMT_RGB24:
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if (s->codec_id == AV_CODEC_ID_CINEPAK) {
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w_align = 4;
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h_align = 4;
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}
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break;
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default:
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break;
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}
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if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
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w_align = FFMAX(w_align, 8);
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}
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*width = FFALIGN(*width, w_align);
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*height = FFALIGN(*height, h_align);
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if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) {
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// some of the optimized chroma MC reads one line too much
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// which is also done in mpeg decoders with lowres > 0
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*height += 2;
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// H.264 uses edge emulation for out of frame motion vectors, for this
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// it requires a temporary area large enough to hold a 21x21 block,
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// increasing witdth ensure that the temporary area is large enough,
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// the next rounded up width is 32
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*width = FFMAX(*width, 32);
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}
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for (i = 0; i < 4; i++)
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linesize_align[i] = STRIDE_ALIGN;
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}
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void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
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int chroma_shift = desc->log2_chroma_w;
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int linesize_align[AV_NUM_DATA_POINTERS];
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int align;
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avcodec_align_dimensions2(s, width, height, linesize_align);
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align = FFMAX(linesize_align[0], linesize_align[3]);
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linesize_align[1] <<= chroma_shift;
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linesize_align[2] <<= chroma_shift;
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align = FFMAX3(align, linesize_align[1], linesize_align[2]);
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*width = FFALIGN(*width, align);
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}
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int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
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{
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if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
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return AVERROR(EINVAL);
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pos--;
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*xpos = (pos&1) * 128;
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*ypos = ((pos>>1)^(pos<4)) * 128;
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return 0;
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}
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enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
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{
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int pos, xout, yout;
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for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
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if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
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return pos;
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}
|
|
return AVCHROMA_LOC_UNSPECIFIED;
|
|
}
|
|
|
|
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
|
|
enum AVSampleFormat sample_fmt, const uint8_t *buf,
|
|
int buf_size, int align)
|
|
{
|
|
int ch, planar, needed_size, ret = 0;
|
|
|
|
needed_size = av_samples_get_buffer_size(NULL, nb_channels,
|
|
frame->nb_samples, sample_fmt,
|
|
align);
|
|
if (buf_size < needed_size)
|
|
return AVERROR(EINVAL);
|
|
|
|
planar = av_sample_fmt_is_planar(sample_fmt);
|
|
if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
|
|
if (!(frame->extended_data = av_mallocz_array(nb_channels,
|
|
sizeof(*frame->extended_data))))
|
|
return AVERROR(ENOMEM);
|
|
} else {
|
|
frame->extended_data = frame->data;
|
|
}
|
|
|
|
if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
|
|
(uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
|
|
sample_fmt, align)) < 0) {
|
|
if (frame->extended_data != frame->data)
|
|
av_freep(&frame->extended_data);
|
|
return ret;
|
|
}
|
|
if (frame->extended_data != frame->data) {
|
|
for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
|
|
frame->data[ch] = frame->extended_data[ch];
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
FramePool *pool = avctx->internal->pool;
|
|
int i, ret;
|
|
|
|
switch (avctx->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO: {
|
|
AVPicture picture;
|
|
int size[4] = { 0 };
|
|
int w = frame->width;
|
|
int h = frame->height;
|
|
int tmpsize, unaligned;
|
|
|
|
if (pool->format == frame->format &&
|
|
pool->width == frame->width && pool->height == frame->height)
|
|
return 0;
|
|
|
|
avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
|
|
|
|
do {
|
|
// NOTE: do not align linesizes individually, this breaks e.g. assumptions
|
|
// that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
|
|
av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
|
|
// increase alignment of w for next try (rhs gives the lowest bit set in w)
|
|
w += w & ~(w - 1);
|
|
|
|
unaligned = 0;
|
|
for (i = 0; i < 4; i++)
|
|
unaligned |= picture.linesize[i] % pool->stride_align[i];
|
|
} while (unaligned);
|
|
|
|
tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
|
|
NULL, picture.linesize);
|
|
if (tmpsize < 0)
|
|
return -1;
|
|
|
|
for (i = 0; i < 3 && picture.data[i + 1]; i++)
|
|
size[i] = picture.data[i + 1] - picture.data[i];
|
|
size[i] = tmpsize - (picture.data[i] - picture.data[0]);
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
av_buffer_pool_uninit(&pool->pools[i]);
|
|
pool->linesize[i] = picture.linesize[i];
|
|
if (size[i]) {
|
|
pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
|
|
CONFIG_MEMORY_POISONING ?
|
|
NULL :
|
|
av_buffer_allocz);
|
|
if (!pool->pools[i]) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
}
|
|
}
|
|
pool->format = frame->format;
|
|
pool->width = frame->width;
|
|
pool->height = frame->height;
|
|
|
|
break;
|
|
}
|
|
case AVMEDIA_TYPE_AUDIO: {
|
|
int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
|
|
int planar = av_sample_fmt_is_planar(frame->format);
|
|
int planes = planar ? ch : 1;
|
|
|
|
if (pool->format == frame->format && pool->planes == planes &&
|
|
pool->channels == ch && frame->nb_samples == pool->samples)
|
|
return 0;
|
|
|
|
av_buffer_pool_uninit(&pool->pools[0]);
|
|
ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
|
|
frame->nb_samples, frame->format, 0);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
|
|
if (!pool->pools[0]) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
|
|
pool->format = frame->format;
|
|
pool->planes = planes;
|
|
pool->channels = ch;
|
|
pool->samples = frame->nb_samples;
|
|
break;
|
|
}
|
|
default: av_assert0(0);
|
|
}
|
|
return 0;
|
|
fail:
|
|
for (i = 0; i < 4; i++)
|
|
av_buffer_pool_uninit(&pool->pools[i]);
|
|
pool->format = -1;
|
|
pool->planes = pool->channels = pool->samples = 0;
|
|
pool->width = pool->height = 0;
|
|
return ret;
|
|
}
|
|
|
|
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
FramePool *pool = avctx->internal->pool;
|
|
int planes = pool->planes;
|
|
int i;
|
|
|
|
frame->linesize[0] = pool->linesize[0];
|
|
|
|
if (planes > AV_NUM_DATA_POINTERS) {
|
|
frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
|
|
frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
|
|
frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
|
|
sizeof(*frame->extended_buf));
|
|
if (!frame->extended_data || !frame->extended_buf) {
|
|
av_freep(&frame->extended_data);
|
|
av_freep(&frame->extended_buf);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
} else {
|
|
frame->extended_data = frame->data;
|
|
av_assert0(frame->nb_extended_buf == 0);
|
|
}
|
|
|
|
for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
|
|
frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
|
|
if (!frame->buf[i])
|
|
goto fail;
|
|
frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
|
|
}
|
|
for (i = 0; i < frame->nb_extended_buf; i++) {
|
|
frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
|
|
if (!frame->extended_buf[i])
|
|
goto fail;
|
|
frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
|
|
}
|
|
|
|
if (avctx->debug & FF_DEBUG_BUFFERS)
|
|
av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
|
|
|
|
return 0;
|
|
fail:
|
|
av_frame_unref(frame);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
|
|
{
|
|
FramePool *pool = s->internal->pool;
|
|
int i;
|
|
|
|
if (pic->data[0]) {
|
|
av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
|
|
return -1;
|
|
}
|
|
|
|
memset(pic->data, 0, sizeof(pic->data));
|
|
pic->extended_data = pic->data;
|
|
|
|
for (i = 0; i < 4 && pool->pools[i]; i++) {
|
|
pic->linesize[i] = pool->linesize[i];
|
|
|
|
pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
|
|
if (!pic->buf[i])
|
|
goto fail;
|
|
|
|
pic->data[i] = pic->buf[i]->data;
|
|
}
|
|
for (; i < AV_NUM_DATA_POINTERS; i++) {
|
|
pic->data[i] = NULL;
|
|
pic->linesize[i] = 0;
|
|
}
|
|
if (pic->data[1] && !pic->data[2])
|
|
avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
|
|
|
|
if (s->debug & FF_DEBUG_BUFFERS)
|
|
av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
|
|
|
|
return 0;
|
|
fail:
|
|
av_frame_unref(pic);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
void avpriv_color_frame(AVFrame *frame, const int c[4])
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
|
|
int p, y, x;
|
|
|
|
av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
|
|
|
|
for (p = 0; p<desc->nb_components; p++) {
|
|
uint8_t *dst = frame->data[p];
|
|
int is_chroma = p == 1 || p == 2;
|
|
int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
|
|
int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
|
|
for (y = 0; y < height; y++) {
|
|
if (desc->comp[0].depth_minus1 >= 8) {
|
|
for (x = 0; x<bytes; x++)
|
|
((uint16_t*)dst)[x] = c[p];
|
|
}else
|
|
memset(dst, c[p], bytes);
|
|
dst += frame->linesize[p];
|
|
}
|
|
}
|
|
}
|
|
|
|
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
|
|
{
|
|
int ret;
|
|
|
|
if ((ret = update_frame_pool(avctx, frame)) < 0)
|
|
return ret;
|
|
|
|
#if FF_API_GET_BUFFER
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
frame->type = FF_BUFFER_TYPE_INTERNAL;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
switch (avctx->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
return video_get_buffer(avctx, frame);
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
return audio_get_buffer(avctx, frame);
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static int add_metadata_from_side_data(AVPacket *avpkt, AVFrame *frame)
|
|
{
|
|
int size;
|
|
const uint8_t *side_metadata;
|
|
|
|
AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
|
|
|
|
side_metadata = av_packet_get_side_data(avpkt,
|
|
AV_PKT_DATA_STRINGS_METADATA, &size);
|
|
return av_packet_unpack_dictionary(side_metadata, size, frame_md);
|
|
}
|
|
|
|
int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
AVPacket *pkt = avctx->internal->pkt;
|
|
int i;
|
|
static const struct {
|
|
enum AVPacketSideDataType packet;
|
|
enum AVFrameSideDataType frame;
|
|
} sd[] = {
|
|
{ AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
|
|
{ AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
|
|
{ AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
|
|
{ AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
|
|
};
|
|
|
|
if (pkt) {
|
|
frame->pkt_pts = pkt->pts;
|
|
av_frame_set_pkt_pos (frame, pkt->pos);
|
|
av_frame_set_pkt_duration(frame, pkt->duration);
|
|
av_frame_set_pkt_size (frame, pkt->size);
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
|
|
int size;
|
|
uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
|
|
if (packet_sd) {
|
|
AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
|
|
sd[i].frame,
|
|
size);
|
|
if (!frame_sd)
|
|
return AVERROR(ENOMEM);
|
|
|
|
memcpy(frame_sd->data, packet_sd, size);
|
|
}
|
|
}
|
|
add_metadata_from_side_data(pkt, frame);
|
|
} else {
|
|
frame->pkt_pts = AV_NOPTS_VALUE;
|
|
av_frame_set_pkt_pos (frame, -1);
|
|
av_frame_set_pkt_duration(frame, 0);
|
|
av_frame_set_pkt_size (frame, -1);
|
|
}
|
|
frame->reordered_opaque = avctx->reordered_opaque;
|
|
|
|
if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
|
|
frame->color_primaries = avctx->color_primaries;
|
|
if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
|
|
frame->color_trc = avctx->color_trc;
|
|
if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
|
|
av_frame_set_colorspace(frame, avctx->colorspace);
|
|
if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
|
|
av_frame_set_color_range(frame, avctx->color_range);
|
|
if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
|
|
frame->chroma_location = avctx->chroma_sample_location;
|
|
|
|
switch (avctx->codec->type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
frame->format = avctx->pix_fmt;
|
|
if (!frame->sample_aspect_ratio.num)
|
|
frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
|
|
|
|
if (frame->width && frame->height &&
|
|
av_image_check_sar(frame->width, frame->height,
|
|
frame->sample_aspect_ratio) < 0) {
|
|
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
|
|
frame->sample_aspect_ratio.num,
|
|
frame->sample_aspect_ratio.den);
|
|
frame->sample_aspect_ratio = (AVRational){ 0, 1 };
|
|
}
|
|
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if (!frame->sample_rate)
|
|
frame->sample_rate = avctx->sample_rate;
|
|
if (frame->format < 0)
|
|
frame->format = avctx->sample_fmt;
|
|
if (!frame->channel_layout) {
|
|
if (avctx->channel_layout) {
|
|
if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
|
|
avctx->channels) {
|
|
av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
|
|
"configuration.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
frame->channel_layout = avctx->channel_layout;
|
|
} else {
|
|
if (avctx->channels > FF_SANE_NB_CHANNELS) {
|
|
av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
|
|
avctx->channels);
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
}
|
|
}
|
|
av_frame_set_channels(frame, avctx->channels);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#if FF_API_GET_BUFFER
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
return avcodec_default_get_buffer2(avctx, frame, 0);
|
|
}
|
|
|
|
typedef struct CompatReleaseBufPriv {
|
|
AVCodecContext avctx;
|
|
AVFrame frame;
|
|
uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
|
|
} CompatReleaseBufPriv;
|
|
|
|
static void compat_free_buffer(void *opaque, uint8_t *data)
|
|
{
|
|
CompatReleaseBufPriv *priv = opaque;
|
|
if (priv->avctx.release_buffer)
|
|
priv->avctx.release_buffer(&priv->avctx, &priv->frame);
|
|
av_freep(&priv);
|
|
}
|
|
|
|
static void compat_release_buffer(void *opaque, uint8_t *data)
|
|
{
|
|
AVBufferRef *buf = opaque;
|
|
av_buffer_unref(&buf);
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
return ff_init_buffer_info(avctx, frame);
|
|
}
|
|
|
|
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
|
|
{
|
|
const AVHWAccel *hwaccel = avctx->hwaccel;
|
|
int override_dimensions = 1;
|
|
int ret;
|
|
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
|
|
av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (frame->width <= 0 || frame->height <= 0) {
|
|
frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
|
|
frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
|
|
override_dimensions = 0;
|
|
}
|
|
}
|
|
ret = ff_decode_frame_props(avctx, frame);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (hwaccel) {
|
|
if (hwaccel->alloc_frame) {
|
|
ret = hwaccel->alloc_frame(avctx, frame);
|
|
goto end;
|
|
}
|
|
} else
|
|
avctx->sw_pix_fmt = avctx->pix_fmt;
|
|
|
|
#if FF_API_GET_BUFFER
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
/*
|
|
* Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
|
|
* We wrap each plane in its own AVBuffer. Each of those has a reference to
|
|
* a dummy AVBuffer as its private data, unreffing it on free.
|
|
* When all the planes are freed, the dummy buffer's free callback calls
|
|
* release_buffer().
|
|
*/
|
|
if (avctx->get_buffer) {
|
|
CompatReleaseBufPriv *priv = NULL;
|
|
AVBufferRef *dummy_buf = NULL;
|
|
int planes, i, ret;
|
|
|
|
if (flags & AV_GET_BUFFER_FLAG_REF)
|
|
frame->reference = 1;
|
|
|
|
ret = avctx->get_buffer(avctx, frame);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* return if the buffers are already set up
|
|
* this would happen e.g. when a custom get_buffer() calls
|
|
* avcodec_default_get_buffer
|
|
*/
|
|
if (frame->buf[0])
|
|
goto end0;
|
|
|
|
priv = av_mallocz(sizeof(*priv));
|
|
if (!priv) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
priv->avctx = *avctx;
|
|
priv->frame = *frame;
|
|
|
|
dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
|
|
if (!dummy_buf) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
|
|
#define WRAP_PLANE(ref_out, data, data_size) \
|
|
do { \
|
|
AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
|
|
if (!dummy_ref) { \
|
|
ret = AVERROR(ENOMEM); \
|
|
goto fail; \
|
|
} \
|
|
ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
|
|
dummy_ref, 0); \
|
|
if (!ref_out) { \
|
|
av_buffer_unref(&dummy_ref); \
|
|
av_frame_unref(frame); \
|
|
ret = AVERROR(ENOMEM); \
|
|
goto fail; \
|
|
} \
|
|
} while (0)
|
|
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
|
|
|
|
planes = av_pix_fmt_count_planes(frame->format);
|
|
/* workaround for AVHWAccel plane count of 0, buf[0] is used as
|
|
check for allocated buffers: make libavcodec happy */
|
|
if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
|
|
planes = 1;
|
|
if (!desc || planes <= 0) {
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
|
|
for (i = 0; i < planes; i++) {
|
|
int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
|
|
int plane_size = (frame->height >> v_shift) * frame->linesize[i];
|
|
|
|
WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
|
|
}
|
|
} else {
|
|
int planar = av_sample_fmt_is_planar(frame->format);
|
|
planes = planar ? avctx->channels : 1;
|
|
|
|
if (planes > FF_ARRAY_ELEMS(frame->buf)) {
|
|
frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
|
|
frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
|
|
frame->nb_extended_buf);
|
|
if (!frame->extended_buf) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
|
|
WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
|
|
|
|
for (i = 0; i < frame->nb_extended_buf; i++)
|
|
WRAP_PLANE(frame->extended_buf[i],
|
|
frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
|
|
frame->linesize[0]);
|
|
}
|
|
|
|
av_buffer_unref(&dummy_buf);
|
|
|
|
end0:
|
|
frame->width = avctx->width;
|
|
frame->height = avctx->height;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
avctx->release_buffer(avctx, frame);
|
|
av_freep(&priv);
|
|
av_buffer_unref(&dummy_buf);
|
|
return ret;
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
ret = avctx->get_buffer2(avctx, frame, flags);
|
|
|
|
end:
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
|
|
frame->width = avctx->width;
|
|
frame->height = avctx->height;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
|
|
{
|
|
int ret = get_buffer_internal(avctx, frame, flags);
|
|
if (ret < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
|
frame->width = frame->height = 0;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
AVFrame *tmp;
|
|
int ret;
|
|
|
|
av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
|
|
|
|
if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
|
|
av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
|
|
frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
|
|
av_frame_unref(frame);
|
|
}
|
|
|
|
ff_init_buffer_info(avctx, frame);
|
|
|
|
if (!frame->data[0])
|
|
return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
|
|
|
|
if (av_frame_is_writable(frame))
|
|
return ff_decode_frame_props(avctx, frame);
|
|
|
|
tmp = av_frame_alloc();
|
|
if (!tmp)
|
|
return AVERROR(ENOMEM);
|
|
|
|
av_frame_move_ref(tmp, frame);
|
|
|
|
ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
|
|
if (ret < 0) {
|
|
av_frame_free(&tmp);
|
|
return ret;
|
|
}
|
|
|
|
av_frame_copy(frame, tmp);
|
|
av_frame_free(&tmp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
int ret = reget_buffer_internal(avctx, frame);
|
|
if (ret < 0)
|
|
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
|
|
return ret;
|
|
}
|
|
|
|
#if FF_API_GET_BUFFER
|
|
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
|
|
{
|
|
av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
|
|
|
|
av_frame_unref(pic);
|
|
}
|
|
|
|
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
|
|
{
|
|
av_assert0(0);
|
|
return AVERROR_BUG;
|
|
}
|
|
#endif
|
|
|
|
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
int r = func(c, (char *)arg + i * size);
|
|
if (ret)
|
|
ret[i] = r;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
int r = func(c, arg, i, 0);
|
|
if (ret)
|
|
ret[i] = r;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
|
|
unsigned int fourcc)
|
|
{
|
|
while (tags->pix_fmt >= 0) {
|
|
if (tags->fourcc == fourcc)
|
|
return tags->pix_fmt;
|
|
tags++;
|
|
}
|
|
return AV_PIX_FMT_NONE;
|
|
}
|
|
|
|
static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
|
|
return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
|
|
}
|
|
|
|
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
|
|
{
|
|
while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
|
|
++fmt;
|
|
return fmt[0];
|
|
}
|
|
|
|
static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
|
|
enum AVPixelFormat pix_fmt)
|
|
{
|
|
AVHWAccel *hwaccel = NULL;
|
|
|
|
while ((hwaccel = av_hwaccel_next(hwaccel)))
|
|
if (hwaccel->id == codec_id
|
|
&& hwaccel->pix_fmt == pix_fmt)
|
|
return hwaccel;
|
|
return NULL;
|
|
}
|
|
|
|
static int setup_hwaccel(AVCodecContext *avctx,
|
|
const enum AVPixelFormat fmt,
|
|
const char *name)
|
|
{
|
|
AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
|
|
int ret = 0;
|
|
|
|
if (!hwa) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Could not find an AVHWAccel for the pixel format: %s",
|
|
name);
|
|
return AVERROR(ENOENT);
|
|
}
|
|
|
|
if (hwa->capabilities & HWACCEL_CODEC_CAP_EXPERIMENTAL &&
|
|
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
|
|
av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
|
|
hwa->name);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
if (hwa->priv_data_size) {
|
|
avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
|
|
if (!avctx->internal->hwaccel_priv_data)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
if (hwa->init) {
|
|
ret = hwa->init(avctx);
|
|
if (ret < 0) {
|
|
av_freep(&avctx->internal->hwaccel_priv_data);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
avctx->hwaccel = hwa;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
|
|
{
|
|
const AVPixFmtDescriptor *desc;
|
|
enum AVPixelFormat *choices;
|
|
enum AVPixelFormat ret;
|
|
unsigned n = 0;
|
|
|
|
while (fmt[n] != AV_PIX_FMT_NONE)
|
|
++n;
|
|
|
|
av_assert0(n >= 1);
|
|
avctx->sw_pix_fmt = fmt[n - 1];
|
|
av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
|
|
|
|
choices = av_malloc_array(n + 1, sizeof(*choices));
|
|
if (!choices)
|
|
return AV_PIX_FMT_NONE;
|
|
|
|
memcpy(choices, fmt, (n + 1) * sizeof(*choices));
|
|
|
|
for (;;) {
|
|
if (avctx->hwaccel && avctx->hwaccel->uninit)
|
|
avctx->hwaccel->uninit(avctx);
|
|
av_freep(&avctx->internal->hwaccel_priv_data);
|
|
avctx->hwaccel = NULL;
|
|
|
|
ret = avctx->get_format(avctx, choices);
|
|
|
|
desc = av_pix_fmt_desc_get(ret);
|
|
if (!desc) {
|
|
ret = AV_PIX_FMT_NONE;
|
|
break;
|
|
}
|
|
|
|
if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
|
|
break;
|
|
#if FF_API_CAP_VDPAU
|
|
if (avctx->codec->capabilities&AV_CODEC_CAP_HWACCEL_VDPAU)
|
|
break;
|
|
#endif
|
|
|
|
if (!setup_hwaccel(avctx, ret, desc->name))
|
|
break;
|
|
|
|
/* Remove failed hwaccel from choices */
|
|
for (n = 0; choices[n] != ret; n++)
|
|
av_assert0(choices[n] != AV_PIX_FMT_NONE);
|
|
|
|
do
|
|
choices[n] = choices[n + 1];
|
|
while (choices[n++] != AV_PIX_FMT_NONE);
|
|
}
|
|
|
|
av_freep(&choices);
|
|
return ret;
|
|
}
|
|
|
|
#if FF_API_AVFRAME_LAVC
|
|
void avcodec_get_frame_defaults(AVFrame *frame)
|
|
{
|
|
#if LIBAVCODEC_VERSION_MAJOR >= 55
|
|
// extended_data should explicitly be freed when needed, this code is unsafe currently
|
|
// also this is not compatible to the <55 ABI/API
|
|
if (frame->extended_data != frame->data && 0)
|
|
av_freep(&frame->extended_data);
|
|
#endif
|
|
|
|
memset(frame, 0, sizeof(AVFrame));
|
|
av_frame_unref(frame);
|
|
}
|
|
|
|
AVFrame *avcodec_alloc_frame(void)
|
|
{
|
|
return av_frame_alloc();
|
|
}
|
|
|
|
void avcodec_free_frame(AVFrame **frame)
|
|
{
|
|
av_frame_free(frame);
|
|
}
|
|
#endif
|
|
|
|
MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
|
|
MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
|
|
MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
|
|
MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
|
|
MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
|
|
|
|
unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
|
|
{
|
|
return codec->properties;
|
|
}
|
|
|
|
int av_codec_get_max_lowres(const AVCodec *codec)
|
|
{
|
|
return codec->max_lowres;
|
|
}
|
|
|
|
static void get_subtitle_defaults(AVSubtitle *sub)
|
|
{
|
|
memset(sub, 0, sizeof(*sub));
|
|
sub->pts = AV_NOPTS_VALUE;
|
|
}
|
|
|
|
static int get_bit_rate(AVCodecContext *ctx)
|
|
{
|
|
int bit_rate;
|
|
int bits_per_sample;
|
|
|
|
switch (ctx->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
case AVMEDIA_TYPE_DATA:
|
|
case AVMEDIA_TYPE_SUBTITLE:
|
|
case AVMEDIA_TYPE_ATTACHMENT:
|
|
bit_rate = ctx->bit_rate;
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
|
|
bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
|
|
break;
|
|
default:
|
|
bit_rate = 0;
|
|
break;
|
|
}
|
|
return bit_rate;
|
|
}
|
|
|
|
int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
|
|
{
|
|
int ret = 0;
|
|
|
|
ff_unlock_avcodec();
|
|
|
|
ret = avcodec_open2(avctx, codec, options);
|
|
|
|
ff_lock_avcodec(avctx, codec);
|
|
return ret;
|
|
}
|
|
|
|
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
|
|
{
|
|
int ret = 0;
|
|
AVDictionary *tmp = NULL;
|
|
|
|
if (avcodec_is_open(avctx))
|
|
return 0;
|
|
|
|
if ((!codec && !avctx->codec)) {
|
|
av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if ((codec && avctx->codec && codec != avctx->codec)) {
|
|
av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
|
|
"but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (!codec)
|
|
codec = avctx->codec;
|
|
|
|
if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
|
|
return AVERROR(EINVAL);
|
|
|
|
if (options)
|
|
av_dict_copy(&tmp, *options, 0);
|
|
|
|
ret = ff_lock_avcodec(avctx, codec);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
avctx->internal = av_mallocz(sizeof(AVCodecInternal));
|
|
if (!avctx->internal) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto end;
|
|
}
|
|
|
|
avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
|
|
if (!avctx->internal->pool) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto free_and_end;
|
|
}
|
|
|
|
avctx->internal->to_free = av_frame_alloc();
|
|
if (!avctx->internal->to_free) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto free_and_end;
|
|
}
|
|
|
|
if (codec->priv_data_size > 0) {
|
|
if (!avctx->priv_data) {
|
|
avctx->priv_data = av_mallocz(codec->priv_data_size);
|
|
if (!avctx->priv_data) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto end;
|
|
}
|
|
if (codec->priv_class) {
|
|
*(const AVClass **)avctx->priv_data = codec->priv_class;
|
|
av_opt_set_defaults(avctx->priv_data);
|
|
}
|
|
}
|
|
if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
|
|
goto free_and_end;
|
|
} else {
|
|
avctx->priv_data = NULL;
|
|
}
|
|
if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
|
|
goto free_and_end;
|
|
|
|
if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist\n", codec->name);
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
|
|
// only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
|
|
if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
|
|
(avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
|
|
if (avctx->coded_width && avctx->coded_height)
|
|
ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
|
|
else if (avctx->width && avctx->height)
|
|
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
|
|
if (ret < 0)
|
|
goto free_and_end;
|
|
}
|
|
|
|
if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
|
|
&& ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
|
|
|| av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
|
|
av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
|
|
ff_set_dimensions(avctx, 0, 0);
|
|
}
|
|
|
|
if (avctx->width > 0 && avctx->height > 0) {
|
|
if (av_image_check_sar(avctx->width, avctx->height,
|
|
avctx->sample_aspect_ratio) < 0) {
|
|
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
|
|
avctx->sample_aspect_ratio.num,
|
|
avctx->sample_aspect_ratio.den);
|
|
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
|
|
}
|
|
}
|
|
|
|
/* if the decoder init function was already called previously,
|
|
* free the already allocated subtitle_header before overwriting it */
|
|
if (av_codec_is_decoder(codec))
|
|
av_freep(&avctx->subtitle_header);
|
|
|
|
if (avctx->channels > FF_SANE_NB_CHANNELS) {
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
|
|
avctx->codec = codec;
|
|
if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
|
|
avctx->codec_id == AV_CODEC_ID_NONE) {
|
|
avctx->codec_type = codec->type;
|
|
avctx->codec_id = codec->id;
|
|
}
|
|
if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
|
|
&& avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
avctx->frame_number = 0;
|
|
avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
|
|
|
|
if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
|
|
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
|
|
const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
|
|
AVCodec *codec2;
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"The %s '%s' is experimental but experimental codecs are not enabled, "
|
|
"add '-strict %d' if you want to use it.\n",
|
|
codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
|
|
codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
|
|
if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
|
|
av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
|
|
codec_string, codec2->name);
|
|
ret = AVERROR_EXPERIMENTAL;
|
|
goto free_and_end;
|
|
}
|
|
|
|
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
|
|
(!avctx->time_base.num || !avctx->time_base.den)) {
|
|
avctx->time_base.num = 1;
|
|
avctx->time_base.den = avctx->sample_rate;
|
|
}
|
|
|
|
if (!HAVE_THREADS)
|
|
av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
|
|
|
|
if (CONFIG_FRAME_THREAD_ENCODER) {
|
|
ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
|
|
ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
|
|
ff_lock_avcodec(avctx, codec);
|
|
if (ret < 0)
|
|
goto free_and_end;
|
|
}
|
|
|
|
if (HAVE_THREADS
|
|
&& !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
|
|
ret = ff_thread_init(avctx);
|
|
if (ret < 0) {
|
|
goto free_and_end;
|
|
}
|
|
}
|
|
if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
|
|
avctx->thread_count = 1;
|
|
|
|
if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
|
|
avctx->codec->max_lowres);
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
|
|
#if FF_API_VISMV
|
|
if (avctx->debug_mv)
|
|
av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
|
|
"see the codecview filter instead.\n");
|
|
#endif
|
|
|
|
if (av_codec_is_encoder(avctx->codec)) {
|
|
int i;
|
|
#if FF_API_CODED_FRAME
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
avctx->coded_frame = av_frame_alloc();
|
|
if (!avctx->coded_frame) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto free_and_end;
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
if (avctx->codec->sample_fmts) {
|
|
for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
|
|
if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
|
|
break;
|
|
if (avctx->channels == 1 &&
|
|
av_get_planar_sample_fmt(avctx->sample_fmt) ==
|
|
av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
|
|
avctx->sample_fmt = avctx->codec->sample_fmts[i];
|
|
break;
|
|
}
|
|
}
|
|
if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
|
|
char buf[128];
|
|
snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
|
|
av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
|
|
(char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
}
|
|
if (avctx->codec->pix_fmts) {
|
|
for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
|
|
if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
|
|
break;
|
|
if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
|
|
&& !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
|
|
&& avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
|
|
char buf[128];
|
|
snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
|
|
av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
|
|
(char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
|
|
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
|
|
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
|
|
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
|
|
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
|
|
avctx->color_range = AVCOL_RANGE_JPEG;
|
|
}
|
|
if (avctx->codec->supported_samplerates) {
|
|
for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
|
|
if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
|
|
break;
|
|
if (avctx->codec->supported_samplerates[i] == 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
|
|
avctx->sample_rate);
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
}
|
|
if (avctx->sample_rate < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
|
|
avctx->sample_rate);
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
if (avctx->codec->channel_layouts) {
|
|
if (!avctx->channel_layout) {
|
|
av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
|
|
} else {
|
|
for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
|
|
if (avctx->channel_layout == avctx->codec->channel_layouts[i])
|
|
break;
|
|
if (avctx->codec->channel_layouts[i] == 0) {
|
|
char buf[512];
|
|
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
|
|
av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
}
|
|
}
|
|
if (avctx->channel_layout && avctx->channels) {
|
|
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
|
|
if (channels != avctx->channels) {
|
|
char buf[512];
|
|
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Channel layout '%s' with %d channels does not match number of specified channels %d\n",
|
|
buf, channels, avctx->channels);
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
} else if (avctx->channel_layout) {
|
|
avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
|
|
}
|
|
if (avctx->channels < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
|
|
avctx->channels);
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (avctx->width <= 0 || avctx->height <= 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
}
|
|
if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
|
|
&& avctx->bit_rate>0 && avctx->bit_rate<1000) {
|
|
av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
|
|
}
|
|
|
|
if (!avctx->rc_initial_buffer_occupancy)
|
|
avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
|
|
}
|
|
|
|
avctx->pts_correction_num_faulty_pts =
|
|
avctx->pts_correction_num_faulty_dts = 0;
|
|
avctx->pts_correction_last_pts =
|
|
avctx->pts_correction_last_dts = INT64_MIN;
|
|
|
|
if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
|
|
&& avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
|
|
av_log(avctx, AV_LOG_WARNING,
|
|
"gray decoding requested but not enabled at configuration time\n");
|
|
|
|
if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
|
|
|| avctx->internal->frame_thread_encoder)) {
|
|
ret = avctx->codec->init(avctx);
|
|
if (ret < 0) {
|
|
goto free_and_end;
|
|
}
|
|
}
|
|
|
|
ret=0;
|
|
|
|
#if FF_API_AUDIOENC_DELAY
|
|
if (av_codec_is_encoder(avctx->codec))
|
|
avctx->delay = avctx->initial_padding;
|
|
#endif
|
|
|
|
if (av_codec_is_decoder(avctx->codec)) {
|
|
if (!avctx->bit_rate)
|
|
avctx->bit_rate = get_bit_rate(avctx);
|
|
/* validate channel layout from the decoder */
|
|
if (avctx->channel_layout) {
|
|
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
|
|
if (!avctx->channels)
|
|
avctx->channels = channels;
|
|
else if (channels != avctx->channels) {
|
|
char buf[512];
|
|
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
|
|
av_log(avctx, AV_LOG_WARNING,
|
|
"Channel layout '%s' with %d channels does not match specified number of channels %d: "
|
|
"ignoring specified channel layout\n",
|
|
buf, channels, avctx->channels);
|
|
avctx->channel_layout = 0;
|
|
}
|
|
}
|
|
if (avctx->channels && avctx->channels < 0 ||
|
|
avctx->channels > FF_SANE_NB_CHANNELS) {
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
}
|
|
if (avctx->sub_charenc) {
|
|
if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
|
|
av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
|
|
"supported with subtitles codecs\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto free_and_end;
|
|
} else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
|
|
av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
|
|
"subtitles character encoding will be ignored\n",
|
|
avctx->codec_descriptor->name);
|
|
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
|
|
} else {
|
|
/* input character encoding is set for a text based subtitle
|
|
* codec at this point */
|
|
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
|
|
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
|
|
|
|
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
|
|
#if CONFIG_ICONV
|
|
iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
|
|
if (cd == (iconv_t)-1) {
|
|
ret = AVERROR(errno);
|
|
av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
|
|
"with input character encoding \"%s\"\n", avctx->sub_charenc);
|
|
goto free_and_end;
|
|
}
|
|
iconv_close(cd);
|
|
#else
|
|
av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
|
|
"conversion needs a libavcodec built with iconv support "
|
|
"for this codec\n");
|
|
ret = AVERROR(ENOSYS);
|
|
goto free_and_end;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
#if FF_API_AVCTX_TIMEBASE
|
|
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
|
|
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
|
|
#endif
|
|
}
|
|
if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
|
|
av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
|
|
}
|
|
|
|
end:
|
|
ff_unlock_avcodec();
|
|
if (options) {
|
|
av_dict_free(options);
|
|
*options = tmp;
|
|
}
|
|
|
|
return ret;
|
|
free_and_end:
|
|
if (avctx->codec &&
|
|
(avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
|
|
avctx->codec->close(avctx);
|
|
|
|
if (codec->priv_class && codec->priv_data_size)
|
|
av_opt_free(avctx->priv_data);
|
|
av_opt_free(avctx);
|
|
|
|
#if FF_API_CODED_FRAME
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
av_frame_free(&avctx->coded_frame);
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
av_dict_free(&tmp);
|
|
av_freep(&avctx->priv_data);
|
|
if (avctx->internal) {
|
|
av_frame_free(&avctx->internal->to_free);
|
|
av_freep(&avctx->internal->pool);
|
|
}
|
|
av_freep(&avctx->internal);
|
|
avctx->codec = NULL;
|
|
goto end;
|
|
}
|
|
|
|
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
|
|
{
|
|
if (avpkt->size < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (size < 0 || size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
|
|
size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
|
|
av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
|
|
if (!avpkt->data || avpkt->size < size) {
|
|
av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
|
|
avpkt->data = avctx->internal->byte_buffer;
|
|
avpkt->size = avctx->internal->byte_buffer_size;
|
|
#if FF_API_DESTRUCT_PACKET
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
avpkt->destruct = NULL;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (avpkt->data) {
|
|
AVBufferRef *buf = avpkt->buf;
|
|
#if FF_API_DESTRUCT_PACKET
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
void *destruct = avpkt->destruct;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
if (avpkt->size < size) {
|
|
av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
av_init_packet(avpkt);
|
|
#if FF_API_DESTRUCT_PACKET
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
avpkt->destruct = destruct;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
avpkt->buf = buf;
|
|
avpkt->size = size;
|
|
return 0;
|
|
} else {
|
|
int ret = av_new_packet(avpkt, size);
|
|
if (ret < 0)
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
int ff_alloc_packet(AVPacket *avpkt, int size)
|
|
{
|
|
return ff_alloc_packet2(NULL, avpkt, size, 0);
|
|
}
|
|
|
|
/**
|
|
* Pad last frame with silence.
|
|
*/
|
|
static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
|
|
{
|
|
AVFrame *frame = NULL;
|
|
int ret;
|
|
|
|
if (!(frame = av_frame_alloc()))
|
|
return AVERROR(ENOMEM);
|
|
|
|
frame->format = src->format;
|
|
frame->channel_layout = src->channel_layout;
|
|
av_frame_set_channels(frame, av_frame_get_channels(src));
|
|
frame->nb_samples = s->frame_size;
|
|
ret = av_frame_get_buffer(frame, 32);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
ret = av_frame_copy_props(frame, src);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
|
|
src->nb_samples, s->channels, s->sample_fmt)) < 0)
|
|
goto fail;
|
|
if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
|
|
frame->nb_samples - src->nb_samples,
|
|
s->channels, s->sample_fmt)) < 0)
|
|
goto fail;
|
|
|
|
*dst = frame;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
av_frame_free(&frame);
|
|
return ret;
|
|
}
|
|
|
|
int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
|
|
AVPacket *avpkt,
|
|
const AVFrame *frame,
|
|
int *got_packet_ptr)
|
|
{
|
|
AVFrame *extended_frame = NULL;
|
|
AVFrame *padded_frame = NULL;
|
|
int ret;
|
|
AVPacket user_pkt = *avpkt;
|
|
int needs_realloc = !user_pkt.data;
|
|
|
|
*got_packet_ptr = 0;
|
|
|
|
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
|
|
av_free_packet(avpkt);
|
|
av_init_packet(avpkt);
|
|
return 0;
|
|
}
|
|
|
|
/* ensure that extended_data is properly set */
|
|
if (frame && !frame->extended_data) {
|
|
if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
|
|
avctx->channels > AV_NUM_DATA_POINTERS) {
|
|
av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
|
|
"with more than %d channels, but extended_data is not set.\n",
|
|
AV_NUM_DATA_POINTERS);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
|
|
|
|
extended_frame = av_frame_alloc();
|
|
if (!extended_frame)
|
|
return AVERROR(ENOMEM);
|
|
|
|
memcpy(extended_frame, frame, sizeof(AVFrame));
|
|
extended_frame->extended_data = extended_frame->data;
|
|
frame = extended_frame;
|
|
}
|
|
|
|
/* extract audio service type metadata */
|
|
if (frame) {
|
|
AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
|
|
if (sd && sd->size >= sizeof(enum AVAudioServiceType))
|
|
avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
|
|
}
|
|
|
|
/* check for valid frame size */
|
|
if (frame) {
|
|
if (avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME) {
|
|
if (frame->nb_samples > avctx->frame_size) {
|
|
av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
} else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
|
|
if (frame->nb_samples < avctx->frame_size &&
|
|
!avctx->internal->last_audio_frame) {
|
|
ret = pad_last_frame(avctx, &padded_frame, frame);
|
|
if (ret < 0)
|
|
goto end;
|
|
|
|
frame = padded_frame;
|
|
avctx->internal->last_audio_frame = 1;
|
|
}
|
|
|
|
if (frame->nb_samples != avctx->frame_size) {
|
|
av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
}
|
|
}
|
|
|
|
av_assert0(avctx->codec->encode2);
|
|
|
|
ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
|
|
if (!ret) {
|
|
if (*got_packet_ptr) {
|
|
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
|
|
if (avpkt->pts == AV_NOPTS_VALUE)
|
|
avpkt->pts = frame->pts;
|
|
if (!avpkt->duration)
|
|
avpkt->duration = ff_samples_to_time_base(avctx,
|
|
frame->nb_samples);
|
|
}
|
|
avpkt->dts = avpkt->pts;
|
|
} else {
|
|
avpkt->size = 0;
|
|
}
|
|
}
|
|
if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
|
|
needs_realloc = 0;
|
|
if (user_pkt.data) {
|
|
if (user_pkt.size >= avpkt->size) {
|
|
memcpy(user_pkt.data, avpkt->data, avpkt->size);
|
|
} else {
|
|
av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
|
|
avpkt->size = user_pkt.size;
|
|
ret = -1;
|
|
}
|
|
avpkt->buf = user_pkt.buf;
|
|
avpkt->data = user_pkt.data;
|
|
#if FF_API_DESTRUCT_PACKET
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
avpkt->destruct = user_pkt.destruct;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
} else {
|
|
if (av_dup_packet(avpkt) < 0) {
|
|
ret = AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!ret) {
|
|
if (needs_realloc && avpkt->data) {
|
|
ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
|
|
if (ret >= 0)
|
|
avpkt->data = avpkt->buf->data;
|
|
}
|
|
|
|
avctx->frame_number++;
|
|
}
|
|
|
|
if (ret < 0 || !*got_packet_ptr) {
|
|
av_free_packet(avpkt);
|
|
av_init_packet(avpkt);
|
|
goto end;
|
|
}
|
|
|
|
/* NOTE: if we add any audio encoders which output non-keyframe packets,
|
|
* this needs to be moved to the encoders, but for now we can do it
|
|
* here to simplify things */
|
|
avpkt->flags |= AV_PKT_FLAG_KEY;
|
|
|
|
end:
|
|
av_frame_free(&padded_frame);
|
|
av_free(extended_frame);
|
|
|
|
#if FF_API_AUDIOENC_DELAY
|
|
avctx->delay = avctx->initial_padding;
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if FF_API_OLD_ENCODE_AUDIO
|
|
int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
|
|
uint8_t *buf, int buf_size,
|
|
const short *samples)
|
|
{
|
|
AVPacket pkt;
|
|
AVFrame *frame;
|
|
int ret, samples_size, got_packet;
|
|
|
|
av_init_packet(&pkt);
|
|
pkt.data = buf;
|
|
pkt.size = buf_size;
|
|
|
|
if (samples) {
|
|
frame = av_frame_alloc();
|
|
if (!frame)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (avctx->frame_size) {
|
|
frame->nb_samples = avctx->frame_size;
|
|
} else {
|
|
/* if frame_size is not set, the number of samples must be
|
|
* calculated from the buffer size */
|
|
int64_t nb_samples;
|
|
if (!av_get_bits_per_sample(avctx->codec_id)) {
|
|
av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
|
|
"support this codec\n");
|
|
av_frame_free(&frame);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
nb_samples = (int64_t)buf_size * 8 /
|
|
(av_get_bits_per_sample(avctx->codec_id) *
|
|
avctx->channels);
|
|
if (nb_samples >= INT_MAX) {
|
|
av_frame_free(&frame);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
frame->nb_samples = nb_samples;
|
|
}
|
|
|
|
/* it is assumed that the samples buffer is large enough based on the
|
|
* relevant parameters */
|
|
samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
|
|
frame->nb_samples,
|
|
avctx->sample_fmt, 1);
|
|
if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
|
|
avctx->sample_fmt,
|
|
(const uint8_t *)samples,
|
|
samples_size, 1)) < 0) {
|
|
av_frame_free(&frame);
|
|
return ret;
|
|
}
|
|
|
|
/* fabricate frame pts from sample count.
|
|
* this is needed because the avcodec_encode_audio() API does not have
|
|
* a way for the user to provide pts */
|
|
if (avctx->sample_rate && avctx->time_base.num)
|
|
frame->pts = ff_samples_to_time_base(avctx,
|
|
avctx->internal->sample_count);
|
|
else
|
|
frame->pts = AV_NOPTS_VALUE;
|
|
avctx->internal->sample_count += frame->nb_samples;
|
|
} else {
|
|
frame = NULL;
|
|
}
|
|
|
|
got_packet = 0;
|
|
ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
|
|
#if FF_API_CODED_FRAME
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
if (!ret && got_packet && avctx->coded_frame) {
|
|
avctx->coded_frame->pts = pkt.pts;
|
|
avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
/* free any side data since we cannot return it */
|
|
av_packet_free_side_data(&pkt);
|
|
|
|
if (frame && frame->extended_data != frame->data)
|
|
av_freep(&frame->extended_data);
|
|
|
|
av_frame_free(&frame);
|
|
return ret ? ret : pkt.size;
|
|
}
|
|
|
|
#endif
|
|
|
|
#if FF_API_OLD_ENCODE_VIDEO
|
|
int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
|
|
const AVFrame *pict)
|
|
{
|
|
AVPacket pkt;
|
|
int ret, got_packet = 0;
|
|
|
|
if (buf_size < AV_INPUT_BUFFER_MIN_SIZE) {
|
|
av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
|
|
return -1;
|
|
}
|
|
|
|
av_init_packet(&pkt);
|
|
pkt.data = buf;
|
|
pkt.size = buf_size;
|
|
|
|
ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
|
|
#if FF_API_CODED_FRAME
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
if (!ret && got_packet && avctx->coded_frame) {
|
|
avctx->coded_frame->pts = pkt.pts;
|
|
avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
|
|
if (avctx->codec->capabilities & AV_CODEC_CAP_INTRA_ONLY)
|
|
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
/* free any side data since we cannot return it */
|
|
if (pkt.side_data_elems > 0) {
|
|
int i;
|
|
for (i = 0; i < pkt.side_data_elems; i++)
|
|
av_free(pkt.side_data[i].data);
|
|
av_freep(&pkt.side_data);
|
|
pkt.side_data_elems = 0;
|
|
}
|
|
|
|
return ret ? ret : pkt.size;
|
|
}
|
|
|
|
#endif
|
|
|
|
int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
|
|
AVPacket *avpkt,
|
|
const AVFrame *frame,
|
|
int *got_packet_ptr)
|
|
{
|
|
int ret;
|
|
AVPacket user_pkt = *avpkt;
|
|
int needs_realloc = !user_pkt.data;
|
|
|
|
*got_packet_ptr = 0;
|
|
|
|
if(CONFIG_FRAME_THREAD_ENCODER &&
|
|
avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
|
|
return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
|
|
|
|
if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out)
|
|
avctx->stats_out[0] = '\0';
|
|
|
|
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
|
|
av_free_packet(avpkt);
|
|
av_init_packet(avpkt);
|
|
avpkt->size = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
|
|
return AVERROR(EINVAL);
|
|
|
|
if (frame && frame->format == AV_PIX_FMT_NONE)
|
|
av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
|
|
if (frame && (frame->width == 0 || frame->height == 0))
|
|
av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
|
|
|
|
av_assert0(avctx->codec->encode2);
|
|
|
|
ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
|
|
av_assert0(ret <= 0);
|
|
|
|
if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
|
|
needs_realloc = 0;
|
|
if (user_pkt.data) {
|
|
if (user_pkt.size >= avpkt->size) {
|
|
memcpy(user_pkt.data, avpkt->data, avpkt->size);
|
|
} else {
|
|
av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
|
|
avpkt->size = user_pkt.size;
|
|
ret = -1;
|
|
}
|
|
avpkt->buf = user_pkt.buf;
|
|
avpkt->data = user_pkt.data;
|
|
#if FF_API_DESTRUCT_PACKET
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
avpkt->destruct = user_pkt.destruct;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
} else {
|
|
if (av_dup_packet(avpkt) < 0) {
|
|
ret = AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!ret) {
|
|
if (!*got_packet_ptr)
|
|
avpkt->size = 0;
|
|
else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
|
|
avpkt->pts = avpkt->dts = frame->pts;
|
|
|
|
if (needs_realloc && avpkt->data) {
|
|
ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
|
|
if (ret >= 0)
|
|
avpkt->data = avpkt->buf->data;
|
|
}
|
|
|
|
avctx->frame_number++;
|
|
}
|
|
|
|
if (ret < 0 || !*got_packet_ptr)
|
|
av_free_packet(avpkt);
|
|
|
|
emms_c();
|
|
return ret;
|
|
}
|
|
|
|
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
|
|
const AVSubtitle *sub)
|
|
{
|
|
int ret;
|
|
if (sub->start_display_time) {
|
|
av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
|
|
return -1;
|
|
}
|
|
|
|
ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
|
|
avctx->frame_number++;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Attempt to guess proper monotonic timestamps for decoded video frames
|
|
* which might have incorrect times. Input timestamps may wrap around, in
|
|
* which case the output will as well.
|
|
*
|
|
* @param pts the pts field of the decoded AVPacket, as passed through
|
|
* AVFrame.pkt_pts
|
|
* @param dts the dts field of the decoded AVPacket
|
|
* @return one of the input values, may be AV_NOPTS_VALUE
|
|
*/
|
|
static int64_t guess_correct_pts(AVCodecContext *ctx,
|
|
int64_t reordered_pts, int64_t dts)
|
|
{
|
|
int64_t pts = AV_NOPTS_VALUE;
|
|
|
|
if (dts != AV_NOPTS_VALUE) {
|
|
ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
|
|
ctx->pts_correction_last_dts = dts;
|
|
} else if (reordered_pts != AV_NOPTS_VALUE)
|
|
ctx->pts_correction_last_dts = reordered_pts;
|
|
|
|
if (reordered_pts != AV_NOPTS_VALUE) {
|
|
ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
|
|
ctx->pts_correction_last_pts = reordered_pts;
|
|
} else if(dts != AV_NOPTS_VALUE)
|
|
ctx->pts_correction_last_pts = dts;
|
|
|
|
if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
|
|
&& reordered_pts != AV_NOPTS_VALUE)
|
|
pts = reordered_pts;
|
|
else
|
|
pts = dts;
|
|
|
|
return pts;
|
|
}
|
|
|
|
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
|
|
{
|
|
int size = 0, ret;
|
|
const uint8_t *data;
|
|
uint32_t flags;
|
|
int64_t val;
|
|
|
|
data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
|
|
if (!data)
|
|
return 0;
|
|
|
|
if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
|
|
av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
|
|
"changes, but PARAM_CHANGE side data was sent to it.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (size < 4)
|
|
goto fail;
|
|
|
|
flags = bytestream_get_le32(&data);
|
|
size -= 4;
|
|
|
|
if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
|
|
if (size < 4)
|
|
goto fail;
|
|
val = bytestream_get_le32(&data);
|
|
if (val <= 0 || val > INT_MAX) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
avctx->channels = val;
|
|
size -= 4;
|
|
}
|
|
if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
|
|
if (size < 8)
|
|
goto fail;
|
|
avctx->channel_layout = bytestream_get_le64(&data);
|
|
size -= 8;
|
|
}
|
|
if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
|
|
if (size < 4)
|
|
goto fail;
|
|
val = bytestream_get_le32(&data);
|
|
if (val <= 0 || val > INT_MAX) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
avctx->sample_rate = val;
|
|
size -= 4;
|
|
}
|
|
if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
|
|
if (size < 8)
|
|
goto fail;
|
|
avctx->width = bytestream_get_le32(&data);
|
|
avctx->height = bytestream_get_le32(&data);
|
|
size -= 8;
|
|
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
fail:
|
|
av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
|
|
{
|
|
int ret;
|
|
|
|
/* move the original frame to our backup */
|
|
av_frame_unref(avci->to_free);
|
|
av_frame_move_ref(avci->to_free, frame);
|
|
|
|
/* now copy everything except the AVBufferRefs back
|
|
* note that we make a COPY of the side data, so calling av_frame_free() on
|
|
* the caller's frame will work properly */
|
|
ret = av_frame_copy_props(frame, avci->to_free);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
|
|
memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
|
|
if (avci->to_free->extended_data != avci->to_free->data) {
|
|
int planes = av_frame_get_channels(avci->to_free);
|
|
int size = planes * sizeof(*frame->extended_data);
|
|
|
|
if (!size) {
|
|
av_frame_unref(frame);
|
|
return AVERROR_BUG;
|
|
}
|
|
|
|
frame->extended_data = av_malloc(size);
|
|
if (!frame->extended_data) {
|
|
av_frame_unref(frame);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
memcpy(frame->extended_data, avci->to_free->extended_data,
|
|
size);
|
|
} else
|
|
frame->extended_data = frame->data;
|
|
|
|
frame->format = avci->to_free->format;
|
|
frame->width = avci->to_free->width;
|
|
frame->height = avci->to_free->height;
|
|
frame->channel_layout = avci->to_free->channel_layout;
|
|
frame->nb_samples = avci->to_free->nb_samples;
|
|
av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
|
|
int *got_picture_ptr,
|
|
const AVPacket *avpkt)
|
|
{
|
|
AVCodecInternal *avci = avctx->internal;
|
|
int ret;
|
|
// copy to ensure we do not change avpkt
|
|
AVPacket tmp = *avpkt;
|
|
|
|
if (!avctx->codec)
|
|
return AVERROR(EINVAL);
|
|
if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
*got_picture_ptr = 0;
|
|
if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
|
|
return AVERROR(EINVAL);
|
|
|
|
av_frame_unref(picture);
|
|
|
|
if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
|
|
(avctx->active_thread_type & FF_THREAD_FRAME)) {
|
|
int did_split = av_packet_split_side_data(&tmp);
|
|
ret = apply_param_change(avctx, &tmp);
|
|
if (ret < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
|
|
if (avctx->err_recognition & AV_EF_EXPLODE)
|
|
goto fail;
|
|
}
|
|
|
|
avctx->internal->pkt = &tmp;
|
|
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
|
|
ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
|
|
&tmp);
|
|
else {
|
|
ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
|
|
&tmp);
|
|
picture->pkt_dts = avpkt->dts;
|
|
|
|
if(!avctx->has_b_frames){
|
|
av_frame_set_pkt_pos(picture, avpkt->pos);
|
|
}
|
|
//FIXME these should be under if(!avctx->has_b_frames)
|
|
/* get_buffer is supposed to set frame parameters */
|
|
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
|
|
if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
|
|
if (!picture->width) picture->width = avctx->width;
|
|
if (!picture->height) picture->height = avctx->height;
|
|
if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
|
|
}
|
|
}
|
|
|
|
fail:
|
|
emms_c(); //needed to avoid an emms_c() call before every return;
|
|
|
|
avctx->internal->pkt = NULL;
|
|
if (did_split) {
|
|
av_packet_free_side_data(&tmp);
|
|
if(ret == tmp.size)
|
|
ret = avpkt->size;
|
|
}
|
|
|
|
if (*got_picture_ptr) {
|
|
if (!avctx->refcounted_frames) {
|
|
int err = unrefcount_frame(avci, picture);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
avctx->frame_number++;
|
|
av_frame_set_best_effort_timestamp(picture,
|
|
guess_correct_pts(avctx,
|
|
picture->pkt_pts,
|
|
picture->pkt_dts));
|
|
} else
|
|
av_frame_unref(picture);
|
|
} else
|
|
ret = 0;
|
|
|
|
/* many decoders assign whole AVFrames, thus overwriting extended_data;
|
|
* make sure it's set correctly */
|
|
av_assert0(!picture->extended_data || picture->extended_data == picture->data);
|
|
|
|
#if FF_API_AVCTX_TIMEBASE
|
|
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
|
|
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if FF_API_OLD_DECODE_AUDIO
|
|
int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
|
|
int *frame_size_ptr,
|
|
AVPacket *avpkt)
|
|
{
|
|
AVFrame *frame = av_frame_alloc();
|
|
int ret, got_frame = 0;
|
|
|
|
if (!frame)
|
|
return AVERROR(ENOMEM);
|
|
#if FF_API_GET_BUFFER
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
if (avctx->get_buffer != avcodec_default_get_buffer) {
|
|
av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
|
|
"avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
|
|
av_log(avctx, AV_LOG_ERROR, "Please port your application to "
|
|
"avcodec_decode_audio4()\n");
|
|
avctx->get_buffer = avcodec_default_get_buffer;
|
|
avctx->release_buffer = avcodec_default_release_buffer;
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
|
|
|
|
if (ret >= 0 && got_frame) {
|
|
int ch, plane_size;
|
|
int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
|
|
int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
|
|
frame->nb_samples,
|
|
avctx->sample_fmt, 1);
|
|
if (*frame_size_ptr < data_size) {
|
|
av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
|
|
"the current frame (%d < %d)\n", *frame_size_ptr, data_size);
|
|
av_frame_free(&frame);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
memcpy(samples, frame->extended_data[0], plane_size);
|
|
|
|
if (planar && avctx->channels > 1) {
|
|
uint8_t *out = ((uint8_t *)samples) + plane_size;
|
|
for (ch = 1; ch < avctx->channels; ch++) {
|
|
memcpy(out, frame->extended_data[ch], plane_size);
|
|
out += plane_size;
|
|
}
|
|
}
|
|
*frame_size_ptr = data_size;
|
|
} else {
|
|
*frame_size_ptr = 0;
|
|
}
|
|
av_frame_free(&frame);
|
|
return ret;
|
|
}
|
|
|
|
#endif
|
|
|
|
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
|
|
AVFrame *frame,
|
|
int *got_frame_ptr,
|
|
const AVPacket *avpkt)
|
|
{
|
|
AVCodecInternal *avci = avctx->internal;
|
|
int ret = 0;
|
|
|
|
*got_frame_ptr = 0;
|
|
|
|
if (!avpkt->data && avpkt->size) {
|
|
av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (!avctx->codec)
|
|
return AVERROR(EINVAL);
|
|
if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
av_frame_unref(frame);
|
|
|
|
if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
|
|
uint8_t *side;
|
|
int side_size;
|
|
uint32_t discard_padding = 0;
|
|
uint8_t skip_reason = 0;
|
|
uint8_t discard_reason = 0;
|
|
// copy to ensure we do not change avpkt
|
|
AVPacket tmp = *avpkt;
|
|
int did_split = av_packet_split_side_data(&tmp);
|
|
ret = apply_param_change(avctx, &tmp);
|
|
if (ret < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
|
|
if (avctx->err_recognition & AV_EF_EXPLODE)
|
|
goto fail;
|
|
}
|
|
|
|
avctx->internal->pkt = &tmp;
|
|
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
|
|
ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
|
|
else {
|
|
ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
|
|
av_assert0(ret <= tmp.size);
|
|
frame->pkt_dts = avpkt->dts;
|
|
}
|
|
if (ret >= 0 && *got_frame_ptr) {
|
|
avctx->frame_number++;
|
|
av_frame_set_best_effort_timestamp(frame,
|
|
guess_correct_pts(avctx,
|
|
frame->pkt_pts,
|
|
frame->pkt_dts));
|
|
if (frame->format == AV_SAMPLE_FMT_NONE)
|
|
frame->format = avctx->sample_fmt;
|
|
if (!frame->channel_layout)
|
|
frame->channel_layout = avctx->channel_layout;
|
|
if (!av_frame_get_channels(frame))
|
|
av_frame_set_channels(frame, avctx->channels);
|
|
if (!frame->sample_rate)
|
|
frame->sample_rate = avctx->sample_rate;
|
|
}
|
|
|
|
side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
|
|
if(side && side_size>=10) {
|
|
avctx->internal->skip_samples = AV_RL32(side);
|
|
discard_padding = AV_RL32(side + 4);
|
|
av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
|
|
avctx->internal->skip_samples, (int)discard_padding);
|
|
skip_reason = AV_RL8(side + 8);
|
|
discard_reason = AV_RL8(side + 9);
|
|
}
|
|
if (avctx->internal->skip_samples && *got_frame_ptr &&
|
|
!(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
|
|
if(frame->nb_samples <= avctx->internal->skip_samples){
|
|
*got_frame_ptr = 0;
|
|
avctx->internal->skip_samples -= frame->nb_samples;
|
|
av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
|
|
avctx->internal->skip_samples);
|
|
} else {
|
|
av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
|
|
frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
|
|
if(avctx->pkt_timebase.num && avctx->sample_rate) {
|
|
int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
|
|
(AVRational){1, avctx->sample_rate},
|
|
avctx->pkt_timebase);
|
|
if(frame->pkt_pts!=AV_NOPTS_VALUE)
|
|
frame->pkt_pts += diff_ts;
|
|
if(frame->pkt_dts!=AV_NOPTS_VALUE)
|
|
frame->pkt_dts += diff_ts;
|
|
if (av_frame_get_pkt_duration(frame) >= diff_ts)
|
|
av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
|
|
} else {
|
|
av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
|
|
}
|
|
av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
|
|
avctx->internal->skip_samples, frame->nb_samples);
|
|
frame->nb_samples -= avctx->internal->skip_samples;
|
|
avctx->internal->skip_samples = 0;
|
|
}
|
|
}
|
|
|
|
if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
|
|
!(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
|
|
if (discard_padding == frame->nb_samples) {
|
|
*got_frame_ptr = 0;
|
|
} else {
|
|
if(avctx->pkt_timebase.num && avctx->sample_rate) {
|
|
int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
|
|
(AVRational){1, avctx->sample_rate},
|
|
avctx->pkt_timebase);
|
|
if (av_frame_get_pkt_duration(frame) >= diff_ts)
|
|
av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
|
|
} else {
|
|
av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
|
|
}
|
|
av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
|
|
(int)discard_padding, frame->nb_samples);
|
|
frame->nb_samples -= discard_padding;
|
|
}
|
|
}
|
|
|
|
if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
|
|
AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
|
|
if (fside) {
|
|
AV_WL32(fside->data, avctx->internal->skip_samples);
|
|
AV_WL32(fside->data + 4, discard_padding);
|
|
AV_WL8(fside->data + 8, skip_reason);
|
|
AV_WL8(fside->data + 9, discard_reason);
|
|
avctx->internal->skip_samples = 0;
|
|
}
|
|
}
|
|
fail:
|
|
avctx->internal->pkt = NULL;
|
|
if (did_split) {
|
|
av_packet_free_side_data(&tmp);
|
|
if(ret == tmp.size)
|
|
ret = avpkt->size;
|
|
}
|
|
|
|
if (ret >= 0 && *got_frame_ptr) {
|
|
if (!avctx->refcounted_frames) {
|
|
int err = unrefcount_frame(avci, frame);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
} else
|
|
av_frame_unref(frame);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
|
|
static int recode_subtitle(AVCodecContext *avctx,
|
|
AVPacket *outpkt, const AVPacket *inpkt)
|
|
{
|
|
#if CONFIG_ICONV
|
|
iconv_t cd = (iconv_t)-1;
|
|
int ret = 0;
|
|
char *inb, *outb;
|
|
size_t inl, outl;
|
|
AVPacket tmp;
|
|
#endif
|
|
|
|
if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
|
|
return 0;
|
|
|
|
#if CONFIG_ICONV
|
|
cd = iconv_open("UTF-8", avctx->sub_charenc);
|
|
av_assert0(cd != (iconv_t)-1);
|
|
|
|
inb = inpkt->data;
|
|
inl = inpkt->size;
|
|
|
|
if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
|
|
av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
|
|
ret = AVERROR(ENOMEM);
|
|
goto end;
|
|
}
|
|
|
|
ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
|
|
if (ret < 0)
|
|
goto end;
|
|
outpkt->buf = tmp.buf;
|
|
outpkt->data = tmp.data;
|
|
outpkt->size = tmp.size;
|
|
outb = outpkt->data;
|
|
outl = outpkt->size;
|
|
|
|
if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
|
|
iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
|
|
outl >= outpkt->size || inl != 0) {
|
|
ret = FFMIN(AVERROR(errno), -1);
|
|
av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
|
|
"from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
|
|
av_free_packet(&tmp);
|
|
goto end;
|
|
}
|
|
outpkt->size -= outl;
|
|
memset(outpkt->data + outpkt->size, 0, outl);
|
|
|
|
end:
|
|
if (cd != (iconv_t)-1)
|
|
iconv_close(cd);
|
|
return ret;
|
|
#else
|
|
av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
|
|
return AVERROR(EINVAL);
|
|
#endif
|
|
}
|
|
|
|
static int utf8_check(const uint8_t *str)
|
|
{
|
|
const uint8_t *byte;
|
|
uint32_t codepoint, min;
|
|
|
|
while (*str) {
|
|
byte = str;
|
|
GET_UTF8(codepoint, *(byte++), return 0;);
|
|
min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
|
|
1 << (5 * (byte - str) - 4);
|
|
if (codepoint < min || codepoint >= 0x110000 ||
|
|
codepoint == 0xFFFE /* BOM */ ||
|
|
codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
|
|
return 0;
|
|
str = byte;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
|
|
int *got_sub_ptr,
|
|
AVPacket *avpkt)
|
|
{
|
|
int i, ret = 0;
|
|
|
|
if (!avpkt->data && avpkt->size) {
|
|
av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (!avctx->codec)
|
|
return AVERROR(EINVAL);
|
|
if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
*got_sub_ptr = 0;
|
|
get_subtitle_defaults(sub);
|
|
|
|
if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
|
|
AVPacket pkt_recoded;
|
|
AVPacket tmp = *avpkt;
|
|
int did_split = av_packet_split_side_data(&tmp);
|
|
//apply_param_change(avctx, &tmp);
|
|
|
|
if (did_split) {
|
|
/* FFMIN() prevents overflow in case the packet wasn't allocated with
|
|
* proper padding.
|
|
* If the side data is smaller than the buffer padding size, the
|
|
* remaining bytes should have already been filled with zeros by the
|
|
* original packet allocation anyway. */
|
|
memset(tmp.data + tmp.size, 0,
|
|
FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
|
|
}
|
|
|
|
pkt_recoded = tmp;
|
|
ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
|
|
if (ret < 0) {
|
|
*got_sub_ptr = 0;
|
|
} else {
|
|
avctx->internal->pkt = &pkt_recoded;
|
|
|
|
if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
|
|
sub->pts = av_rescale_q(avpkt->pts,
|
|
avctx->pkt_timebase, AV_TIME_BASE_Q);
|
|
ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
|
|
av_assert1((ret >= 0) >= !!*got_sub_ptr &&
|
|
!!*got_sub_ptr >= !!sub->num_rects);
|
|
|
|
if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
|
|
avctx->pkt_timebase.num) {
|
|
AVRational ms = { 1, 1000 };
|
|
sub->end_display_time = av_rescale_q(avpkt->duration,
|
|
avctx->pkt_timebase, ms);
|
|
}
|
|
|
|
for (i = 0; i < sub->num_rects; i++) {
|
|
if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Invalid UTF-8 in decoded subtitles text; "
|
|
"maybe missing -sub_charenc option\n");
|
|
avsubtitle_free(sub);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
}
|
|
|
|
if (tmp.data != pkt_recoded.data) { // did we recode?
|
|
/* prevent from destroying side data from original packet */
|
|
pkt_recoded.side_data = NULL;
|
|
pkt_recoded.side_data_elems = 0;
|
|
|
|
av_free_packet(&pkt_recoded);
|
|
}
|
|
if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
|
|
sub->format = 0;
|
|
else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
|
|
sub->format = 1;
|
|
avctx->internal->pkt = NULL;
|
|
}
|
|
|
|
if (did_split) {
|
|
av_packet_free_side_data(&tmp);
|
|
if(ret == tmp.size)
|
|
ret = avpkt->size;
|
|
}
|
|
|
|
if (*got_sub_ptr)
|
|
avctx->frame_number++;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void avsubtitle_free(AVSubtitle *sub)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < sub->num_rects; i++) {
|
|
av_freep(&sub->rects[i]->pict.data[0]);
|
|
av_freep(&sub->rects[i]->pict.data[1]);
|
|
av_freep(&sub->rects[i]->pict.data[2]);
|
|
av_freep(&sub->rects[i]->pict.data[3]);
|
|
av_freep(&sub->rects[i]->text);
|
|
av_freep(&sub->rects[i]->ass);
|
|
av_freep(&sub->rects[i]);
|
|
}
|
|
|
|
av_freep(&sub->rects);
|
|
|
|
memset(sub, 0, sizeof(AVSubtitle));
|
|
}
|
|
|
|
av_cold int avcodec_close(AVCodecContext *avctx)
|
|
{
|
|
if (!avctx)
|
|
return 0;
|
|
|
|
if (avcodec_is_open(avctx)) {
|
|
FramePool *pool = avctx->internal->pool;
|
|
int i;
|
|
if (CONFIG_FRAME_THREAD_ENCODER &&
|
|
avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
|
|
ff_frame_thread_encoder_free(avctx);
|
|
}
|
|
if (HAVE_THREADS && avctx->internal->thread_ctx)
|
|
ff_thread_free(avctx);
|
|
if (avctx->codec && avctx->codec->close)
|
|
avctx->codec->close(avctx);
|
|
avctx->internal->byte_buffer_size = 0;
|
|
av_freep(&avctx->internal->byte_buffer);
|
|
av_frame_free(&avctx->internal->to_free);
|
|
for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
|
|
av_buffer_pool_uninit(&pool->pools[i]);
|
|
av_freep(&avctx->internal->pool);
|
|
|
|
if (avctx->hwaccel && avctx->hwaccel->uninit)
|
|
avctx->hwaccel->uninit(avctx);
|
|
av_freep(&avctx->internal->hwaccel_priv_data);
|
|
|
|
av_freep(&avctx->internal);
|
|
}
|
|
|
|
if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
|
|
av_opt_free(avctx->priv_data);
|
|
av_opt_free(avctx);
|
|
av_freep(&avctx->priv_data);
|
|
if (av_codec_is_encoder(avctx->codec)) {
|
|
av_freep(&avctx->extradata);
|
|
#if FF_API_CODED_FRAME
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
av_frame_free(&avctx->coded_frame);
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
}
|
|
avctx->codec = NULL;
|
|
avctx->active_thread_type = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
|
|
{
|
|
switch(id){
|
|
//This is for future deprecatec codec ids, its empty since
|
|
//last major bump but will fill up again over time, please don't remove it
|
|
// case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
|
|
case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
|
|
case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
|
|
case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
|
|
case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
|
|
case AV_CODEC_ID_PCM_S16BE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S16BE_PLANAR;
|
|
case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
|
|
case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
|
|
case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
|
|
case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
|
|
case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
|
|
case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
|
|
case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
|
|
case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
|
|
case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
|
|
case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
|
|
case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
|
|
case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
|
|
case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
|
|
case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
|
|
default : return id;
|
|
}
|
|
}
|
|
|
|
static AVCodec *find_encdec(enum AVCodecID id, int encoder)
|
|
{
|
|
AVCodec *p, *experimental = NULL;
|
|
p = first_avcodec;
|
|
id= remap_deprecated_codec_id(id);
|
|
while (p) {
|
|
if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
|
|
p->id == id) {
|
|
if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
|
|
experimental = p;
|
|
} else
|
|
return p;
|
|
}
|
|
p = p->next;
|
|
}
|
|
return experimental;
|
|
}
|
|
|
|
AVCodec *avcodec_find_encoder(enum AVCodecID id)
|
|
{
|
|
return find_encdec(id, 1);
|
|
}
|
|
|
|
AVCodec *avcodec_find_encoder_by_name(const char *name)
|
|
{
|
|
AVCodec *p;
|
|
if (!name)
|
|
return NULL;
|
|
p = first_avcodec;
|
|
while (p) {
|
|
if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
|
|
return p;
|
|
p = p->next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
AVCodec *avcodec_find_decoder(enum AVCodecID id)
|
|
{
|
|
return find_encdec(id, 0);
|
|
}
|
|
|
|
AVCodec *avcodec_find_decoder_by_name(const char *name)
|
|
{
|
|
AVCodec *p;
|
|
if (!name)
|
|
return NULL;
|
|
p = first_avcodec;
|
|
while (p) {
|
|
if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
|
|
return p;
|
|
p = p->next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
const char *avcodec_get_name(enum AVCodecID id)
|
|
{
|
|
const AVCodecDescriptor *cd;
|
|
AVCodec *codec;
|
|
|
|
if (id == AV_CODEC_ID_NONE)
|
|
return "none";
|
|
cd = avcodec_descriptor_get(id);
|
|
if (cd)
|
|
return cd->name;
|
|
av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
|
|
codec = avcodec_find_decoder(id);
|
|
if (codec)
|
|
return codec->name;
|
|
codec = avcodec_find_encoder(id);
|
|
if (codec)
|
|
return codec->name;
|
|
return "unknown_codec";
|
|
}
|
|
|
|
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
|
|
{
|
|
int i, len, ret = 0;
|
|
|
|
#define TAG_PRINT(x) \
|
|
(((x) >= '0' && (x) <= '9') || \
|
|
((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
|
|
((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
len = snprintf(buf, buf_size,
|
|
TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
|
|
buf += len;
|
|
buf_size = buf_size > len ? buf_size - len : 0;
|
|
ret += len;
|
|
codec_tag >>= 8;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
|
|
{
|
|
const char *codec_type;
|
|
const char *codec_name;
|
|
const char *profile = NULL;
|
|
const AVCodec *p;
|
|
int bitrate;
|
|
int new_line = 0;
|
|
AVRational display_aspect_ratio;
|
|
const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
|
|
|
|
if (!buf || buf_size <= 0)
|
|
return;
|
|
codec_type = av_get_media_type_string(enc->codec_type);
|
|
codec_name = avcodec_get_name(enc->codec_id);
|
|
if (enc->profile != FF_PROFILE_UNKNOWN) {
|
|
if (enc->codec)
|
|
p = enc->codec;
|
|
else
|
|
p = encode ? avcodec_find_encoder(enc->codec_id) :
|
|
avcodec_find_decoder(enc->codec_id);
|
|
if (p)
|
|
profile = av_get_profile_name(p, enc->profile);
|
|
}
|
|
|
|
snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
|
|
codec_name);
|
|
buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
|
|
|
|
if (enc->codec && strcmp(enc->codec->name, codec_name))
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
|
|
|
|
if (profile)
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
|
|
if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
|
|
&& av_log_get_level() >= AV_LOG_VERBOSE
|
|
&& enc->refs)
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %d reference frame%s",
|
|
enc->refs, enc->refs > 1 ? "s" : "");
|
|
|
|
if (enc->codec_tag) {
|
|
char tag_buf[32];
|
|
av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
" (%s / 0x%04X)", tag_buf, enc->codec_tag);
|
|
}
|
|
|
|
switch (enc->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
{
|
|
char detail[256] = "(";
|
|
|
|
av_strlcat(buf, separator, buf_size);
|
|
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
"%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
|
|
av_get_pix_fmt_name(enc->pix_fmt));
|
|
if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
|
|
enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
|
|
av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
|
|
if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
|
|
av_strlcatf(detail, sizeof(detail), "%s, ",
|
|
av_color_range_name(enc->color_range));
|
|
|
|
if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
|
|
enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
|
|
enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
|
|
if (enc->colorspace != (int)enc->color_primaries ||
|
|
enc->colorspace != (int)enc->color_trc) {
|
|
new_line = 1;
|
|
av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
|
|
av_color_space_name(enc->colorspace),
|
|
av_color_primaries_name(enc->color_primaries),
|
|
av_color_transfer_name(enc->color_trc));
|
|
} else
|
|
av_strlcatf(detail, sizeof(detail), "%s, ",
|
|
av_get_colorspace_name(enc->colorspace));
|
|
}
|
|
|
|
if (av_log_get_level() >= AV_LOG_DEBUG &&
|
|
enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
|
|
av_strlcatf(detail, sizeof(detail), "%s, ",
|
|
av_chroma_location_name(enc->chroma_sample_location));
|
|
|
|
if (strlen(detail) > 1) {
|
|
detail[strlen(detail) - 2] = 0;
|
|
av_strlcatf(buf, buf_size, "%s)", detail);
|
|
}
|
|
}
|
|
|
|
if (enc->width) {
|
|
av_strlcat(buf, new_line ? separator : ", ", buf_size);
|
|
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
"%dx%d",
|
|
enc->width, enc->height);
|
|
|
|
if (av_log_get_level() >= AV_LOG_VERBOSE &&
|
|
(enc->width != enc->coded_width ||
|
|
enc->height != enc->coded_height))
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
" (%dx%d)", enc->coded_width, enc->coded_height);
|
|
|
|
if (enc->sample_aspect_ratio.num) {
|
|
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
|
|
enc->width * (int64_t)enc->sample_aspect_ratio.num,
|
|
enc->height * (int64_t)enc->sample_aspect_ratio.den,
|
|
1024 * 1024);
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
" [SAR %d:%d DAR %d:%d]",
|
|
enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
|
|
display_aspect_ratio.num, display_aspect_ratio.den);
|
|
}
|
|
if (av_log_get_level() >= AV_LOG_DEBUG) {
|
|
int g = av_gcd(enc->time_base.num, enc->time_base.den);
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %d/%d",
|
|
enc->time_base.num / g, enc->time_base.den / g);
|
|
}
|
|
}
|
|
if (encode) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", q=%d-%d", enc->qmin, enc->qmax);
|
|
} else {
|
|
if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", Closed Captions");
|
|
if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", lossless");
|
|
}
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
av_strlcat(buf, separator, buf_size);
|
|
|
|
if (enc->sample_rate) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
"%d Hz, ", enc->sample_rate);
|
|
}
|
|
av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
|
|
if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %s", av_get_sample_fmt_name(enc->sample_fmt));
|
|
}
|
|
if ( enc->bits_per_raw_sample > 0
|
|
&& enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
" (%d bit)", enc->bits_per_raw_sample);
|
|
break;
|
|
case AVMEDIA_TYPE_DATA:
|
|
if (av_log_get_level() >= AV_LOG_DEBUG) {
|
|
int g = av_gcd(enc->time_base.num, enc->time_base.den);
|
|
if (g)
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %d/%d",
|
|
enc->time_base.num / g, enc->time_base.den / g);
|
|
}
|
|
break;
|
|
case AVMEDIA_TYPE_SUBTITLE:
|
|
if (enc->width)
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %dx%d", enc->width, enc->height);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
if (encode) {
|
|
if (enc->flags & AV_CODEC_FLAG_PASS1)
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", pass 1");
|
|
if (enc->flags & AV_CODEC_FLAG_PASS2)
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", pass 2");
|
|
}
|
|
bitrate = get_bit_rate(enc);
|
|
if (bitrate != 0) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %d kb/s", bitrate / 1000);
|
|
} else if (enc->rc_max_rate > 0) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", max. %d kb/s", enc->rc_max_rate / 1000);
|
|
}
|
|
}
|
|
|
|
const char *av_get_profile_name(const AVCodec *codec, int profile)
|
|
{
|
|
const AVProfile *p;
|
|
if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
|
|
return NULL;
|
|
|
|
for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
|
|
if (p->profile == profile)
|
|
return p->name;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
unsigned avcodec_version(void)
|
|
{
|
|
// av_assert0(AV_CODEC_ID_V410==164);
|
|
av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
|
|
av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
|
|
// av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
|
|
av_assert0(AV_CODEC_ID_SRT==94216);
|
|
av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
|
|
|
|
#if FF_API_CODEC_ID
|
|
av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
|
|
av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
|
|
av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
|
|
av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
|
|
av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
|
|
#endif
|
|
return LIBAVCODEC_VERSION_INT;
|
|
}
|
|
|
|
const char *avcodec_configuration(void)
|
|
{
|
|
return FFMPEG_CONFIGURATION;
|
|
}
|
|
|
|
const char *avcodec_license(void)
|
|
{
|
|
#define LICENSE_PREFIX "libavcodec license: "
|
|
return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
|
|
}
|
|
|
|
void avcodec_flush_buffers(AVCodecContext *avctx)
|
|
{
|
|
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
|
|
ff_thread_flush(avctx);
|
|
else if (avctx->codec->flush)
|
|
avctx->codec->flush(avctx);
|
|
|
|
avctx->pts_correction_last_pts =
|
|
avctx->pts_correction_last_dts = INT64_MIN;
|
|
|
|
if (!avctx->refcounted_frames)
|
|
av_frame_unref(avctx->internal->to_free);
|
|
}
|
|
|
|
int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
|
|
{
|
|
switch (codec_id) {
|
|
case AV_CODEC_ID_8SVX_EXP:
|
|
case AV_CODEC_ID_8SVX_FIB:
|
|
case AV_CODEC_ID_ADPCM_CT:
|
|
case AV_CODEC_ID_ADPCM_IMA_APC:
|
|
case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
|
|
case AV_CODEC_ID_ADPCM_IMA_OKI:
|
|
case AV_CODEC_ID_ADPCM_IMA_WS:
|
|
case AV_CODEC_ID_ADPCM_G722:
|
|
case AV_CODEC_ID_ADPCM_YAMAHA:
|
|
return 4;
|
|
case AV_CODEC_ID_DSD_LSBF:
|
|
case AV_CODEC_ID_DSD_MSBF:
|
|
case AV_CODEC_ID_DSD_LSBF_PLANAR:
|
|
case AV_CODEC_ID_DSD_MSBF_PLANAR:
|
|
case AV_CODEC_ID_PCM_ALAW:
|
|
case AV_CODEC_ID_PCM_MULAW:
|
|
case AV_CODEC_ID_PCM_S8:
|
|
case AV_CODEC_ID_PCM_S8_PLANAR:
|
|
case AV_CODEC_ID_PCM_U8:
|
|
case AV_CODEC_ID_PCM_ZORK:
|
|
return 8;
|
|
case AV_CODEC_ID_PCM_S16BE:
|
|
case AV_CODEC_ID_PCM_S16BE_PLANAR:
|
|
case AV_CODEC_ID_PCM_S16LE:
|
|
case AV_CODEC_ID_PCM_S16LE_PLANAR:
|
|
case AV_CODEC_ID_PCM_U16BE:
|
|
case AV_CODEC_ID_PCM_U16LE:
|
|
return 16;
|
|
case AV_CODEC_ID_PCM_S24DAUD:
|
|
case AV_CODEC_ID_PCM_S24BE:
|
|
case AV_CODEC_ID_PCM_S24LE:
|
|
case AV_CODEC_ID_PCM_S24LE_PLANAR:
|
|
case AV_CODEC_ID_PCM_U24BE:
|
|
case AV_CODEC_ID_PCM_U24LE:
|
|
return 24;
|
|
case AV_CODEC_ID_PCM_S32BE:
|
|
case AV_CODEC_ID_PCM_S32LE:
|
|
case AV_CODEC_ID_PCM_S32LE_PLANAR:
|
|
case AV_CODEC_ID_PCM_U32BE:
|
|
case AV_CODEC_ID_PCM_U32LE:
|
|
case AV_CODEC_ID_PCM_F32BE:
|
|
case AV_CODEC_ID_PCM_F32LE:
|
|
return 32;
|
|
case AV_CODEC_ID_PCM_F64BE:
|
|
case AV_CODEC_ID_PCM_F64LE:
|
|
return 64;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
|
|
{
|
|
static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
|
|
[AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
|
|
[AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
|
|
[AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
|
|
[AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
|
|
[AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
|
|
[AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
|
|
[AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
|
|
[AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
|
|
[AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
|
|
[AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
|
|
};
|
|
if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
|
|
return AV_CODEC_ID_NONE;
|
|
if (be < 0 || be > 1)
|
|
be = AV_NE(1, 0);
|
|
return map[fmt][be];
|
|
}
|
|
|
|
int av_get_bits_per_sample(enum AVCodecID codec_id)
|
|
{
|
|
switch (codec_id) {
|
|
case AV_CODEC_ID_ADPCM_SBPRO_2:
|
|
return 2;
|
|
case AV_CODEC_ID_ADPCM_SBPRO_3:
|
|
return 3;
|
|
case AV_CODEC_ID_ADPCM_SBPRO_4:
|
|
case AV_CODEC_ID_ADPCM_IMA_WAV:
|
|
case AV_CODEC_ID_ADPCM_IMA_QT:
|
|
case AV_CODEC_ID_ADPCM_SWF:
|
|
case AV_CODEC_ID_ADPCM_MS:
|
|
return 4;
|
|
default:
|
|
return av_get_exact_bits_per_sample(codec_id);
|
|
}
|
|
}
|
|
|
|
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
|
|
{
|
|
int id, sr, ch, ba, tag, bps;
|
|
|
|
id = avctx->codec_id;
|
|
sr = avctx->sample_rate;
|
|
ch = avctx->channels;
|
|
ba = avctx->block_align;
|
|
tag = avctx->codec_tag;
|
|
bps = av_get_exact_bits_per_sample(avctx->codec_id);
|
|
|
|
/* codecs with an exact constant bits per sample */
|
|
if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
|
|
return (frame_bytes * 8LL) / (bps * ch);
|
|
bps = avctx->bits_per_coded_sample;
|
|
|
|
/* codecs with a fixed packet duration */
|
|
switch (id) {
|
|
case AV_CODEC_ID_ADPCM_ADX: return 32;
|
|
case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
|
|
case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
|
|
case AV_CODEC_ID_AMR_NB:
|
|
case AV_CODEC_ID_EVRC:
|
|
case AV_CODEC_ID_GSM:
|
|
case AV_CODEC_ID_QCELP:
|
|
case AV_CODEC_ID_RA_288: return 160;
|
|
case AV_CODEC_ID_AMR_WB:
|
|
case AV_CODEC_ID_GSM_MS: return 320;
|
|
case AV_CODEC_ID_MP1: return 384;
|
|
case AV_CODEC_ID_ATRAC1: return 512;
|
|
case AV_CODEC_ID_ATRAC3: return 1024;
|
|
case AV_CODEC_ID_ATRAC3P: return 2048;
|
|
case AV_CODEC_ID_MP2:
|
|
case AV_CODEC_ID_MUSEPACK7: return 1152;
|
|
case AV_CODEC_ID_AC3: return 1536;
|
|
}
|
|
|
|
if (sr > 0) {
|
|
/* calc from sample rate */
|
|
if (id == AV_CODEC_ID_TTA)
|
|
return 256 * sr / 245;
|
|
|
|
if (ch > 0) {
|
|
/* calc from sample rate and channels */
|
|
if (id == AV_CODEC_ID_BINKAUDIO_DCT)
|
|
return (480 << (sr / 22050)) / ch;
|
|
}
|
|
}
|
|
|
|
if (ba > 0) {
|
|
/* calc from block_align */
|
|
if (id == AV_CODEC_ID_SIPR) {
|
|
switch (ba) {
|
|
case 20: return 160;
|
|
case 19: return 144;
|
|
case 29: return 288;
|
|
case 37: return 480;
|
|
}
|
|
} else if (id == AV_CODEC_ID_ILBC) {
|
|
switch (ba) {
|
|
case 38: return 160;
|
|
case 50: return 240;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (frame_bytes > 0) {
|
|
/* calc from frame_bytes only */
|
|
if (id == AV_CODEC_ID_TRUESPEECH)
|
|
return 240 * (frame_bytes / 32);
|
|
if (id == AV_CODEC_ID_NELLYMOSER)
|
|
return 256 * (frame_bytes / 64);
|
|
if (id == AV_CODEC_ID_RA_144)
|
|
return 160 * (frame_bytes / 20);
|
|
if (id == AV_CODEC_ID_G723_1)
|
|
return 240 * (frame_bytes / 24);
|
|
|
|
if (bps > 0) {
|
|
/* calc from frame_bytes and bits_per_coded_sample */
|
|
if (id == AV_CODEC_ID_ADPCM_G726)
|
|
return frame_bytes * 8 / bps;
|
|
}
|
|
|
|
if (ch > 0 && ch < INT_MAX/16) {
|
|
/* calc from frame_bytes and channels */
|
|
switch (id) {
|
|
case AV_CODEC_ID_ADPCM_AFC:
|
|
return frame_bytes / (9 * ch) * 16;
|
|
case AV_CODEC_ID_ADPCM_DTK:
|
|
return frame_bytes / (16 * ch) * 28;
|
|
case AV_CODEC_ID_ADPCM_4XM:
|
|
case AV_CODEC_ID_ADPCM_IMA_ISS:
|
|
return (frame_bytes - 4 * ch) * 2 / ch;
|
|
case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
|
|
return (frame_bytes - 4) * 2 / ch;
|
|
case AV_CODEC_ID_ADPCM_IMA_AMV:
|
|
return (frame_bytes - 8) * 2 / ch;
|
|
case AV_CODEC_ID_ADPCM_THP:
|
|
case AV_CODEC_ID_ADPCM_THP_LE:
|
|
if (avctx->extradata)
|
|
return frame_bytes * 14 / (8 * ch);
|
|
break;
|
|
case AV_CODEC_ID_ADPCM_XA:
|
|
return (frame_bytes / 128) * 224 / ch;
|
|
case AV_CODEC_ID_INTERPLAY_DPCM:
|
|
return (frame_bytes - 6 - ch) / ch;
|
|
case AV_CODEC_ID_ROQ_DPCM:
|
|
return (frame_bytes - 8) / ch;
|
|
case AV_CODEC_ID_XAN_DPCM:
|
|
return (frame_bytes - 2 * ch) / ch;
|
|
case AV_CODEC_ID_MACE3:
|
|
return 3 * frame_bytes / ch;
|
|
case AV_CODEC_ID_MACE6:
|
|
return 6 * frame_bytes / ch;
|
|
case AV_CODEC_ID_PCM_LXF:
|
|
return 2 * (frame_bytes / (5 * ch));
|
|
case AV_CODEC_ID_IAC:
|
|
case AV_CODEC_ID_IMC:
|
|
return 4 * frame_bytes / ch;
|
|
}
|
|
|
|
if (tag) {
|
|
/* calc from frame_bytes, channels, and codec_tag */
|
|
if (id == AV_CODEC_ID_SOL_DPCM) {
|
|
if (tag == 3)
|
|
return frame_bytes / ch;
|
|
else
|
|
return frame_bytes * 2 / ch;
|
|
}
|
|
}
|
|
|
|
if (ba > 0) {
|
|
/* calc from frame_bytes, channels, and block_align */
|
|
int blocks = frame_bytes / ba;
|
|
switch (avctx->codec_id) {
|
|
case AV_CODEC_ID_ADPCM_IMA_WAV:
|
|
if (bps < 2 || bps > 5)
|
|
return 0;
|
|
return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
|
|
case AV_CODEC_ID_ADPCM_IMA_DK3:
|
|
return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
|
|
case AV_CODEC_ID_ADPCM_IMA_DK4:
|
|
return blocks * (1 + (ba - 4 * ch) * 2 / ch);
|
|
case AV_CODEC_ID_ADPCM_IMA_RAD:
|
|
return blocks * ((ba - 4 * ch) * 2 / ch);
|
|
case AV_CODEC_ID_ADPCM_MS:
|
|
return blocks * (2 + (ba - 7 * ch) * 2 / ch);
|
|
}
|
|
}
|
|
|
|
if (bps > 0) {
|
|
/* calc from frame_bytes, channels, and bits_per_coded_sample */
|
|
switch (avctx->codec_id) {
|
|
case AV_CODEC_ID_PCM_DVD:
|
|
if(bps<4)
|
|
return 0;
|
|
return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
|
|
case AV_CODEC_ID_PCM_BLURAY:
|
|
if(bps<4)
|
|
return 0;
|
|
return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
|
|
case AV_CODEC_ID_S302M:
|
|
return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Fall back on using frame_size */
|
|
if (avctx->frame_size > 1 && frame_bytes)
|
|
return avctx->frame_size;
|
|
|
|
//For WMA we currently have no other means to calculate duration thus we
|
|
//do it here by assuming CBR, which is true for all known cases.
|
|
if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
|
|
if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
|
|
return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if !HAVE_THREADS
|
|
int ff_thread_init(AVCodecContext *s)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
#endif
|
|
|
|
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
|
|
{
|
|
unsigned int n = 0;
|
|
|
|
while (v >= 0xff) {
|
|
*s++ = 0xff;
|
|
v -= 0xff;
|
|
n++;
|
|
}
|
|
*s = v;
|
|
n++;
|
|
return n;
|
|
}
|
|
|
|
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
|
|
{
|
|
int i;
|
|
for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
|
|
return i;
|
|
}
|
|
|
|
#if FF_API_MISSING_SAMPLE
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
|
|
{
|
|
av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
|
|
"version to the newest one from Git. If the problem still "
|
|
"occurs, it means that your file has a feature which has not "
|
|
"been implemented.\n", feature);
|
|
if(want_sample)
|
|
av_log_ask_for_sample(avc, NULL);
|
|
}
|
|
|
|
void av_log_ask_for_sample(void *avc, const char *msg, ...)
|
|
{
|
|
va_list argument_list;
|
|
|
|
va_start(argument_list, msg);
|
|
|
|
if (msg)
|
|
av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
|
|
av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
|
|
"of this file to ftp://upload.ffmpeg.org/incoming/ "
|
|
"and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
|
|
|
|
va_end(argument_list);
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif /* FF_API_MISSING_SAMPLE */
|
|
|
|
static AVHWAccel *first_hwaccel = NULL;
|
|
static AVHWAccel **last_hwaccel = &first_hwaccel;
|
|
|
|
void av_register_hwaccel(AVHWAccel *hwaccel)
|
|
{
|
|
AVHWAccel **p = last_hwaccel;
|
|
hwaccel->next = NULL;
|
|
while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
|
|
p = &(*p)->next;
|
|
last_hwaccel = &hwaccel->next;
|
|
}
|
|
|
|
AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
|
|
{
|
|
return hwaccel ? hwaccel->next : first_hwaccel;
|
|
}
|
|
|
|
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
|
|
{
|
|
if (lockmgr_cb) {
|
|
// There is no good way to rollback a failure to destroy the
|
|
// mutex, so we ignore failures.
|
|
lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
|
|
lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
|
|
lockmgr_cb = NULL;
|
|
codec_mutex = NULL;
|
|
avformat_mutex = NULL;
|
|
}
|
|
|
|
if (cb) {
|
|
void *new_codec_mutex = NULL;
|
|
void *new_avformat_mutex = NULL;
|
|
int err;
|
|
if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
|
|
return err > 0 ? AVERROR_UNKNOWN : err;
|
|
}
|
|
if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
|
|
// Ignore failures to destroy the newly created mutex.
|
|
cb(&new_codec_mutex, AV_LOCK_DESTROY);
|
|
return err > 0 ? AVERROR_UNKNOWN : err;
|
|
}
|
|
lockmgr_cb = cb;
|
|
codec_mutex = new_codec_mutex;
|
|
avformat_mutex = new_avformat_mutex;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
|
|
{
|
|
if (lockmgr_cb) {
|
|
if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
|
|
return -1;
|
|
}
|
|
|
|
if (avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, 1) != 1 &&
|
|
!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE)) {
|
|
av_log(log_ctx, AV_LOG_ERROR,
|
|
"Insufficient thread locking. At least %d threads are "
|
|
"calling avcodec_open2() at the same time right now.\n",
|
|
entangled_thread_counter);
|
|
if (!lockmgr_cb)
|
|
av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
|
|
ff_avcodec_locked = 1;
|
|
ff_unlock_avcodec();
|
|
return AVERROR(EINVAL);
|
|
}
|
|
av_assert0(!ff_avcodec_locked);
|
|
ff_avcodec_locked = 1;
|
|
return 0;
|
|
}
|
|
|
|
int ff_unlock_avcodec(void)
|
|
{
|
|
av_assert0(ff_avcodec_locked);
|
|
ff_avcodec_locked = 0;
|
|
avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, -1);
|
|
if (lockmgr_cb) {
|
|
if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int avpriv_lock_avformat(void)
|
|
{
|
|
if (lockmgr_cb) {
|
|
if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int avpriv_unlock_avformat(void)
|
|
{
|
|
if (lockmgr_cb) {
|
|
if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
unsigned int avpriv_toupper4(unsigned int x)
|
|
{
|
|
return av_toupper(x & 0xFF) +
|
|
(av_toupper((x >> 8) & 0xFF) << 8) +
|
|
(av_toupper((x >> 16) & 0xFF) << 16) +
|
|
((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
|
|
}
|
|
|
|
int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
|
|
{
|
|
int ret;
|
|
|
|
dst->owner = src->owner;
|
|
|
|
ret = av_frame_ref(dst->f, src->f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
av_assert0(!dst->progress);
|
|
|
|
if (src->progress &&
|
|
!(dst->progress = av_buffer_ref(src->progress))) {
|
|
ff_thread_release_buffer(dst->owner, dst);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if !HAVE_THREADS
|
|
|
|
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
|
|
{
|
|
return ff_get_format(avctx, fmt);
|
|
}
|
|
|
|
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
|
|
{
|
|
f->owner = avctx;
|
|
return ff_get_buffer(avctx, f->f, flags);
|
|
}
|
|
|
|
void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
|
|
{
|
|
if (f->f)
|
|
av_frame_unref(f->f);
|
|
}
|
|
|
|
void ff_thread_finish_setup(AVCodecContext *avctx)
|
|
{
|
|
}
|
|
|
|
void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
|
|
{
|
|
}
|
|
|
|
void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
|
|
{
|
|
}
|
|
|
|
int ff_thread_can_start_frame(AVCodecContext *avctx)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int ff_alloc_entries(AVCodecContext *avctx, int count)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void ff_reset_entries(AVCodecContext *avctx)
|
|
{
|
|
}
|
|
|
|
void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
|
|
{
|
|
}
|
|
|
|
void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
|
|
{
|
|
AVCodec *c= avcodec_find_decoder(codec_id);
|
|
if(!c)
|
|
c= avcodec_find_encoder(codec_id);
|
|
if(c)
|
|
return c->type;
|
|
|
|
if (codec_id <= AV_CODEC_ID_NONE)
|
|
return AVMEDIA_TYPE_UNKNOWN;
|
|
else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
|
|
return AVMEDIA_TYPE_VIDEO;
|
|
else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
|
|
return AVMEDIA_TYPE_AUDIO;
|
|
else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
|
|
return AVMEDIA_TYPE_SUBTITLE;
|
|
|
|
return AVMEDIA_TYPE_UNKNOWN;
|
|
}
|
|
|
|
int avcodec_is_open(AVCodecContext *s)
|
|
{
|
|
return !!s->internal;
|
|
}
|
|
|
|
int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
|
|
{
|
|
int ret;
|
|
char *str;
|
|
|
|
ret = av_bprint_finalize(buf, &str);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (!av_bprint_is_complete(buf)) {
|
|
av_free(str);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
avctx->extradata = str;
|
|
/* Note: the string is NUL terminated (so extradata can be read as a
|
|
* string), but the ending character is not accounted in the size (in
|
|
* binary formats you are likely not supposed to mux that character). When
|
|
* extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
|
|
* zeros. */
|
|
avctx->extradata_size = buf->len;
|
|
return 0;
|
|
}
|
|
|
|
const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
|
|
const uint8_t *end,
|
|
uint32_t *av_restrict state)
|
|
{
|
|
int i;
|
|
|
|
av_assert0(p <= end);
|
|
if (p >= end)
|
|
return end;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
uint32_t tmp = *state << 8;
|
|
*state = tmp + *(p++);
|
|
if (tmp == 0x100 || p == end)
|
|
return p;
|
|
}
|
|
|
|
while (p < end) {
|
|
if (p[-1] > 1 ) p += 3;
|
|
else if (p[-2] ) p += 2;
|
|
else if (p[-3]|(p[-1]-1)) p++;
|
|
else {
|
|
p++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
p = FFMIN(p, end) - 4;
|
|
*state = AV_RB32(p);
|
|
|
|
return p + 4;
|
|
}
|