forked from KolibriOS/kolibrios
838 lines
28 KiB
C
838 lines
28 KiB
C
/*
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* Interface to xvidcore for mpeg4 encoding
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* Copyright (c) 2004 Adam Thayer <krevnik@comcast.net>
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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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* Interface to xvidcore for MPEG-4 compliant encoding.
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* @author Adam Thayer (krevnik@comcast.net)
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*/
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#include <xvid.h>
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#include <unistd.h>
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#include "avcodec.h"
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#include "internal.h"
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#include "libavutil/file.h"
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#include "libavutil/cpu.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/mathematics.h"
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#include "libxvid.h"
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#include "mpegvideo.h"
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/**
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* Buffer management macros.
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*/
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#define BUFFER_SIZE 1024
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#define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
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#define BUFFER_CAT(x) (&((x)[strlen(x)]))
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/**
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* Structure for the private Xvid context.
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* This stores all the private context for the codec.
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*/
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struct xvid_context {
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void *encoder_handle; /**< Handle for Xvid encoder */
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int xsize; /**< Frame x size */
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int ysize; /**< Frame y size */
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int vop_flags; /**< VOP flags for Xvid encoder */
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int vol_flags; /**< VOL flags for Xvid encoder */
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int me_flags; /**< Motion Estimation flags */
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int qscale; /**< Do we use constant scale? */
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int quicktime_format; /**< Are we in a QT-based format? */
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AVFrame encoded_picture; /**< Encoded frame information */
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char *twopassbuffer; /**< Character buffer for two-pass */
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char *old_twopassbuffer; /**< Old character buffer (two-pass) */
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char *twopassfile; /**< second pass temp file name */
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int twopassfd;
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unsigned char *intra_matrix; /**< P-Frame Quant Matrix */
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unsigned char *inter_matrix; /**< I-Frame Quant Matrix */
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int lumi_aq; /**< Lumi masking as an aq method */
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int variance_aq; /**< Variance adaptive quantization */
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int ssim; /**< SSIM information display mode */
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int ssim_acc; /**< SSIM accuracy. 0: accurate. 4: fast. */
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};
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/**
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* Structure for the private first-pass plugin.
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*/
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struct xvid_ff_pass1 {
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int version; /**< Xvid version */
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struct xvid_context *context; /**< Pointer to private context */
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};
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static int xvid_encode_close(AVCodecContext *avctx);
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/*
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* Xvid 2-Pass Kludge Section
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*
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* Xvid's default 2-pass doesn't allow us to create data as we need to, so
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* this section spends time replacing the first pass plugin so we can write
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* statistic information as libavcodec requests in. We have another kludge
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* that allows us to pass data to the second pass in Xvid without a custom
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* rate-control plugin.
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*/
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/**
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* Initialize the two-pass plugin and context.
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*
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* @param param Input construction parameter structure
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* @param handle Private context handle
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* @return Returns XVID_ERR_xxxx on failure, or 0 on success.
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*/
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static int xvid_ff_2pass_create(xvid_plg_create_t * param,
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void ** handle) {
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struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *)param->param;
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char *log = x->context->twopassbuffer;
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/* Do a quick bounds check */
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if( log == NULL )
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return XVID_ERR_FAIL;
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/* We use snprintf() */
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/* This is because we can safely prevent a buffer overflow */
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log[0] = 0;
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snprintf(log, BUFFER_REMAINING(log),
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"# ffmpeg 2-pass log file, using xvid codec\n");
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snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
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"# Do not modify. libxvidcore version: %d.%d.%d\n\n",
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XVID_VERSION_MAJOR(XVID_VERSION),
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XVID_VERSION_MINOR(XVID_VERSION),
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XVID_VERSION_PATCH(XVID_VERSION));
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*handle = x->context;
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return 0;
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}
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/**
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* Destroy the two-pass plugin context.
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*
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* @param ref Context pointer for the plugin
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* @param param Destrooy context
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* @return Returns 0, success guaranteed
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*/
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static int xvid_ff_2pass_destroy(struct xvid_context *ref,
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xvid_plg_destroy_t *param) {
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/* Currently cannot think of anything to do on destruction */
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/* Still, the framework should be here for reference/use */
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if( ref->twopassbuffer != NULL )
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ref->twopassbuffer[0] = 0;
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return 0;
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}
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/**
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* Enable fast encode mode during the first pass.
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*
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* @param ref Context pointer for the plugin
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* @param param Frame data
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* @return Returns 0, success guaranteed
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*/
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static int xvid_ff_2pass_before(struct xvid_context *ref,
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xvid_plg_data_t *param) {
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int motion_remove;
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int motion_replacements;
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int vop_remove;
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/* Nothing to do here, result is changed too much */
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if( param->zone && param->zone->mode == XVID_ZONE_QUANT )
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return 0;
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/* We can implement a 'turbo' first pass mode here */
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param->quant = 2;
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/* Init values */
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motion_remove = ~XVID_ME_CHROMA_PVOP &
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~XVID_ME_CHROMA_BVOP &
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~XVID_ME_EXTSEARCH16 &
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~XVID_ME_ADVANCEDDIAMOND16;
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motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
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XVID_ME_SKIP_DELTASEARCH |
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XVID_ME_FASTREFINE16 |
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XVID_ME_BFRAME_EARLYSTOP;
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vop_remove = ~XVID_VOP_MODEDECISION_RD &
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~XVID_VOP_FAST_MODEDECISION_RD &
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~XVID_VOP_TRELLISQUANT &
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~XVID_VOP_INTER4V &
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~XVID_VOP_HQACPRED;
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param->vol_flags &= ~XVID_VOL_GMC;
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param->vop_flags &= vop_remove;
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param->motion_flags &= motion_remove;
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param->motion_flags |= motion_replacements;
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return 0;
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}
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/**
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* Capture statistic data and write it during first pass.
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*
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* @param ref Context pointer for the plugin
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* @param param Statistic data
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* @return Returns XVID_ERR_xxxx on failure, or 0 on success
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*/
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static int xvid_ff_2pass_after(struct xvid_context *ref,
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xvid_plg_data_t *param) {
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char *log = ref->twopassbuffer;
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const char *frame_types = " ipbs";
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char frame_type;
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/* Quick bounds check */
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if( log == NULL )
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return XVID_ERR_FAIL;
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/* Convert the type given to us into a character */
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if( param->type < 5 && param->type > 0 ) {
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frame_type = frame_types[param->type];
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} else {
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return XVID_ERR_FAIL;
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}
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snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
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"%c %d %d %d %d %d %d\n",
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frame_type, param->stats.quant, param->stats.kblks, param->stats.mblks,
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param->stats.ublks, param->stats.length, param->stats.hlength);
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return 0;
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}
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/**
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* Dispatch function for our custom plugin.
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* This handles the dispatch for the Xvid plugin. It passes data
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* on to other functions for actual processing.
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*
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* @param ref Context pointer for the plugin
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* @param cmd The task given for us to complete
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* @param p1 First parameter (varies)
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* @param p2 Second parameter (varies)
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* @return Returns XVID_ERR_xxxx on failure, or 0 on success
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*/
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static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
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{
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switch( cmd ) {
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case XVID_PLG_INFO:
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case XVID_PLG_FRAME:
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return 0;
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case XVID_PLG_BEFORE:
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return xvid_ff_2pass_before(ref, p1);
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case XVID_PLG_CREATE:
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return xvid_ff_2pass_create(p1, p2);
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case XVID_PLG_AFTER:
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return xvid_ff_2pass_after(ref, p1);
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case XVID_PLG_DESTROY:
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return xvid_ff_2pass_destroy(ref, p1);
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default:
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return XVID_ERR_FAIL;
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}
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}
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/**
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* Routine to create a global VO/VOL header for MP4 container.
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* What we do here is extract the header from the Xvid bitstream
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* as it is encoded. We also strip the repeated headers from the
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* bitstream when a global header is requested for MPEG-4 ISO
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* compliance.
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*
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* @param avctx AVCodecContext pointer to context
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* @param frame Pointer to encoded frame data
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* @param header_len Length of header to search
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* @param frame_len Length of encoded frame data
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* @return Returns new length of frame data
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*/
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static int xvid_strip_vol_header(AVCodecContext *avctx,
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AVPacket *pkt,
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unsigned int header_len,
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unsigned int frame_len) {
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int vo_len = 0, i;
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for( i = 0; i < header_len - 3; i++ ) {
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if( pkt->data[i] == 0x00 &&
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pkt->data[i+1] == 0x00 &&
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pkt->data[i+2] == 0x01 &&
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pkt->data[i+3] == 0xB6 ) {
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vo_len = i;
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break;
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}
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}
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if( vo_len > 0 ) {
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/* We need to store the header, so extract it */
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if( avctx->extradata == NULL ) {
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avctx->extradata = av_malloc(vo_len);
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memcpy(avctx->extradata, pkt->data, vo_len);
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avctx->extradata_size = vo_len;
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}
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/* Less dangerous now, memmove properly copies the two
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chunks of overlapping data */
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memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len);
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pkt->size = frame_len - vo_len;
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}
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return 0;
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}
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/**
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* Routine to correct a possibly erroneous framerate being fed to us.
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* Xvid currently chokes on framerates where the ticks per frame is
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* extremely large. This function works to correct problems in this area
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* by estimating a new framerate and taking the simpler fraction of
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* the two presented.
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*
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* @param avctx Context that contains the framerate to correct.
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*/
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static void xvid_correct_framerate(AVCodecContext *avctx)
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{
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int frate, fbase;
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int est_frate, est_fbase;
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int gcd;
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float est_fps, fps;
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frate = avctx->time_base.den;
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fbase = avctx->time_base.num;
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gcd = av_gcd(frate, fbase);
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if( gcd > 1 ) {
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frate /= gcd;
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fbase /= gcd;
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}
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if( frate <= 65000 && fbase <= 65000 ) {
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avctx->time_base.den = frate;
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avctx->time_base.num = fbase;
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return;
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}
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fps = (float)frate / (float)fbase;
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est_fps = roundf(fps * 1000.0) / 1000.0;
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est_frate = (int)est_fps;
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if( est_fps > (int)est_fps ) {
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est_frate = (est_frate + 1) * 1000;
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est_fbase = (int)roundf((float)est_frate / est_fps);
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} else
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est_fbase = 1;
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gcd = av_gcd(est_frate, est_fbase);
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if( gcd > 1 ) {
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est_frate /= gcd;
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est_fbase /= gcd;
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}
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if( fbase > est_fbase ) {
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avctx->time_base.den = est_frate;
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avctx->time_base.num = est_fbase;
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av_log(avctx, AV_LOG_DEBUG,
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"Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
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est_fps, (((est_fps - fps)/fps) * 100.0));
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} else {
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avctx->time_base.den = frate;
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avctx->time_base.num = fbase;
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}
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}
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static av_cold int xvid_encode_init(AVCodecContext *avctx) {
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int xerr, i;
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int xvid_flags = avctx->flags;
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struct xvid_context *x = avctx->priv_data;
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uint16_t *intra, *inter;
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int fd;
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xvid_plugin_single_t single = { 0 };
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struct xvid_ff_pass1 rc2pass1 = { 0 };
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xvid_plugin_2pass2_t rc2pass2 = { 0 };
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xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */
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xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */
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xvid_plugin_ssim_t ssim = { 0 };
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xvid_gbl_init_t xvid_gbl_init = { 0 };
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xvid_enc_create_t xvid_enc_create = { 0 };
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xvid_enc_plugin_t plugins[4];
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x->twopassfd = -1;
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/* Bring in VOP flags from ffmpeg command-line */
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x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
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if( xvid_flags & CODEC_FLAG_4MV )
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x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
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if( avctx->trellis)
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x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
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if( xvid_flags & CODEC_FLAG_AC_PRED )
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x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
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if( xvid_flags & CODEC_FLAG_GRAY )
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x->vop_flags |= XVID_VOP_GREYSCALE;
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/* Decide which ME quality setting to use */
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x->me_flags = 0;
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switch( avctx->me_method ) {
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case ME_FULL: /* Quality 6 */
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x->me_flags |= XVID_ME_EXTSEARCH16
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| XVID_ME_EXTSEARCH8;
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case ME_EPZS: /* Quality 4 */
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x->me_flags |= XVID_ME_ADVANCEDDIAMOND8
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| XVID_ME_HALFPELREFINE8
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| XVID_ME_CHROMA_PVOP
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| XVID_ME_CHROMA_BVOP;
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case ME_LOG: /* Quality 2 */
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case ME_PHODS:
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case ME_X1:
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x->me_flags |= XVID_ME_ADVANCEDDIAMOND16
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| XVID_ME_HALFPELREFINE16;
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case ME_ZERO: /* Quality 0 */
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default:
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break;
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}
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/* Decide how we should decide blocks */
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switch( avctx->mb_decision ) {
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case 2:
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x->vop_flags |= XVID_VOP_MODEDECISION_RD;
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x->me_flags |= XVID_ME_HALFPELREFINE8_RD
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| XVID_ME_QUARTERPELREFINE8_RD
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| XVID_ME_EXTSEARCH_RD
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| XVID_ME_CHECKPREDICTION_RD;
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case 1:
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if( !(x->vop_flags & XVID_VOP_MODEDECISION_RD) )
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x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
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x->me_flags |= XVID_ME_HALFPELREFINE16_RD
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| XVID_ME_QUARTERPELREFINE16_RD;
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default:
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break;
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}
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/* Bring in VOL flags from ffmpeg command-line */
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x->vol_flags = 0;
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if( xvid_flags & CODEC_FLAG_GMC ) {
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x->vol_flags |= XVID_VOL_GMC;
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x->me_flags |= XVID_ME_GME_REFINE;
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}
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if( xvid_flags & CODEC_FLAG_QPEL ) {
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x->vol_flags |= XVID_VOL_QUARTERPEL;
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x->me_flags |= XVID_ME_QUARTERPELREFINE16;
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if( x->vop_flags & XVID_VOP_INTER4V )
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x->me_flags |= XVID_ME_QUARTERPELREFINE8;
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}
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xvid_gbl_init.version = XVID_VERSION;
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xvid_gbl_init.debug = 0;
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#if ARCH_PPC
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/* Xvid's PPC support is borked, use libavcodec to detect */
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#if HAVE_ALTIVEC
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if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
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xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
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} else
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#endif
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xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;
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#else
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/* Xvid can detect on x86 */
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xvid_gbl_init.cpu_flags = 0;
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#endif
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/* Initialize */
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xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
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/* Create the encoder reference */
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xvid_enc_create.version = XVID_VERSION;
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/* Store the desired frame size */
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xvid_enc_create.width = x->xsize = avctx->width;
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xvid_enc_create.height = x->ysize = avctx->height;
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/* Xvid can determine the proper profile to use */
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/* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
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/* We don't use zones */
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xvid_enc_create.zones = NULL;
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xvid_enc_create.num_zones = 0;
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xvid_enc_create.num_threads = avctx->thread_count;
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xvid_enc_create.plugins = plugins;
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xvid_enc_create.num_plugins = 0;
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/* Initialize Buffers */
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x->twopassbuffer = NULL;
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x->old_twopassbuffer = NULL;
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x->twopassfile = NULL;
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if( xvid_flags & CODEC_FLAG_PASS1 ) {
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rc2pass1.version = XVID_VERSION;
|
|
rc2pass1.context = x;
|
|
x->twopassbuffer = av_malloc(BUFFER_SIZE);
|
|
x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
|
|
if( x->twopassbuffer == NULL || x->old_twopassbuffer == NULL ) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Xvid: Cannot allocate 2-pass log buffers\n");
|
|
goto fail;
|
|
}
|
|
x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0;
|
|
|
|
plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
|
|
plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
|
|
xvid_enc_create.num_plugins++;
|
|
} else if( xvid_flags & CODEC_FLAG_PASS2 ) {
|
|
rc2pass2.version = XVID_VERSION;
|
|
rc2pass2.bitrate = avctx->bit_rate;
|
|
|
|
fd = av_tempfile("xvidff.", &x->twopassfile, 0, avctx);
|
|
if( fd == -1 ) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Xvid: Cannot write 2-pass pipe\n");
|
|
goto fail;
|
|
}
|
|
x->twopassfd = fd;
|
|
|
|
if( avctx->stats_in == NULL ) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Xvid: No 2-pass information loaded for second pass\n");
|
|
goto fail;
|
|
}
|
|
|
|
if( strlen(avctx->stats_in) >
|
|
write(fd, avctx->stats_in, strlen(avctx->stats_in)) ) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Xvid: Cannot write to 2-pass pipe\n");
|
|
goto fail;
|
|
}
|
|
|
|
rc2pass2.filename = x->twopassfile;
|
|
plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
|
|
plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
|
|
xvid_enc_create.num_plugins++;
|
|
} else if( !(xvid_flags & CODEC_FLAG_QSCALE) ) {
|
|
/* Single Pass Bitrate Control! */
|
|
single.version = XVID_VERSION;
|
|
single.bitrate = avctx->bit_rate;
|
|
|
|
plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
|
|
plugins[xvid_enc_create.num_plugins].param = &single;
|
|
xvid_enc_create.num_plugins++;
|
|
}
|
|
|
|
if ( avctx->lumi_masking != 0.0)
|
|
x->lumi_aq = 1;
|
|
|
|
/* Luminance Masking */
|
|
if( x->lumi_aq ) {
|
|
masking_l.method = 0;
|
|
plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
|
|
|
|
/* The old behavior is that when avctx->lumi_masking is specified,
|
|
* plugins[...].param = NULL. Trying to keep the old behavior here. */
|
|
plugins[xvid_enc_create.num_plugins].param = avctx->lumi_masking ? NULL : &masking_l ;
|
|
xvid_enc_create.num_plugins++;
|
|
}
|
|
|
|
/* Variance AQ */
|
|
if( x->variance_aq ) {
|
|
masking_v.method = 1;
|
|
plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
|
|
plugins[xvid_enc_create.num_plugins].param = &masking_v ;
|
|
xvid_enc_create.num_plugins++;
|
|
}
|
|
|
|
if( x->lumi_aq && x->variance_aq )
|
|
av_log(avctx, AV_LOG_INFO,
|
|
"Both lumi_aq and variance_aq are enabled. The resulting quality"
|
|
"will be the worse one of the two effects made by the AQ.\n");
|
|
|
|
/* SSIM */
|
|
if( x->ssim ) {
|
|
plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim;
|
|
ssim.b_printstat = ( x->ssim == 2 );
|
|
ssim.acc = x->ssim_acc;
|
|
ssim.cpu_flags = xvid_gbl_init.cpu_flags;
|
|
ssim.b_visualize = 0;
|
|
plugins[xvid_enc_create.num_plugins].param = &ssim;
|
|
xvid_enc_create.num_plugins++;
|
|
}
|
|
|
|
/* Frame Rate and Key Frames */
|
|
xvid_correct_framerate(avctx);
|
|
xvid_enc_create.fincr = avctx->time_base.num;
|
|
xvid_enc_create.fbase = avctx->time_base.den;
|
|
if( avctx->gop_size > 0 )
|
|
xvid_enc_create.max_key_interval = avctx->gop_size;
|
|
else
|
|
xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
|
|
|
|
/* Quants */
|
|
if( xvid_flags & CODEC_FLAG_QSCALE ) x->qscale = 1;
|
|
else x->qscale = 0;
|
|
|
|
xvid_enc_create.min_quant[0] = avctx->qmin;
|
|
xvid_enc_create.min_quant[1] = avctx->qmin;
|
|
xvid_enc_create.min_quant[2] = avctx->qmin;
|
|
xvid_enc_create.max_quant[0] = avctx->qmax;
|
|
xvid_enc_create.max_quant[1] = avctx->qmax;
|
|
xvid_enc_create.max_quant[2] = avctx->qmax;
|
|
|
|
/* Quant Matrices */
|
|
x->intra_matrix = x->inter_matrix = NULL;
|
|
if( avctx->mpeg_quant )
|
|
x->vol_flags |= XVID_VOL_MPEGQUANT;
|
|
if( (avctx->intra_matrix || avctx->inter_matrix) ) {
|
|
x->vol_flags |= XVID_VOL_MPEGQUANT;
|
|
|
|
if( avctx->intra_matrix ) {
|
|
intra = avctx->intra_matrix;
|
|
x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
|
|
} else
|
|
intra = NULL;
|
|
if( avctx->inter_matrix ) {
|
|
inter = avctx->inter_matrix;
|
|
x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
|
|
} else
|
|
inter = NULL;
|
|
|
|
for( i = 0; i < 64; i++ ) {
|
|
if( intra )
|
|
x->intra_matrix[i] = (unsigned char)intra[i];
|
|
if( inter )
|
|
x->inter_matrix[i] = (unsigned char)inter[i];
|
|
}
|
|
}
|
|
|
|
/* Misc Settings */
|
|
xvid_enc_create.frame_drop_ratio = 0;
|
|
xvid_enc_create.global = 0;
|
|
if( xvid_flags & CODEC_FLAG_CLOSED_GOP )
|
|
xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
|
|
|
|
/* Determines which codec mode we are operating in */
|
|
avctx->extradata = NULL;
|
|
avctx->extradata_size = 0;
|
|
if( xvid_flags & CODEC_FLAG_GLOBAL_HEADER ) {
|
|
/* In this case, we are claiming to be MPEG4 */
|
|
x->quicktime_format = 1;
|
|
avctx->codec_id = AV_CODEC_ID_MPEG4;
|
|
} else {
|
|
/* We are claiming to be Xvid */
|
|
x->quicktime_format = 0;
|
|
if(!avctx->codec_tag)
|
|
avctx->codec_tag = AV_RL32("xvid");
|
|
}
|
|
|
|
/* Bframes */
|
|
xvid_enc_create.max_bframes = avctx->max_b_frames;
|
|
xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
|
|
xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
|
|
if( avctx->max_b_frames > 0 && !x->quicktime_format ) xvid_enc_create.global |= XVID_GLOBAL_PACKED;
|
|
|
|
av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins));
|
|
|
|
/* Create encoder context */
|
|
xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
|
|
if( xerr ) {
|
|
av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
|
|
goto fail;
|
|
}
|
|
|
|
x->encoder_handle = xvid_enc_create.handle;
|
|
avctx->coded_frame = &x->encoded_picture;
|
|
|
|
return 0;
|
|
fail:
|
|
xvid_encode_close(avctx);
|
|
return -1;
|
|
}
|
|
|
|
static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
|
|
const AVFrame *picture, int *got_packet)
|
|
{
|
|
int xerr, i, ret, user_packet = !!pkt->data;
|
|
char *tmp;
|
|
struct xvid_context *x = avctx->priv_data;
|
|
AVFrame *p = &x->encoded_picture;
|
|
int mb_width = (avctx->width + 15) / 16;
|
|
int mb_height = (avctx->height + 15) / 16;
|
|
|
|
xvid_enc_frame_t xvid_enc_frame = { 0 };
|
|
xvid_enc_stats_t xvid_enc_stats = { 0 };
|
|
|
|
if ((ret = ff_alloc_packet2(avctx, pkt, mb_width*mb_height*MAX_MB_BYTES + FF_MIN_BUFFER_SIZE)) < 0)
|
|
return ret;
|
|
|
|
/* Start setting up the frame */
|
|
xvid_enc_frame.version = XVID_VERSION;
|
|
xvid_enc_stats.version = XVID_VERSION;
|
|
*p = *picture;
|
|
|
|
/* Let Xvid know where to put the frame. */
|
|
xvid_enc_frame.bitstream = pkt->data;
|
|
xvid_enc_frame.length = pkt->size;
|
|
|
|
/* Initialize input image fields */
|
|
if( avctx->pix_fmt != AV_PIX_FMT_YUV420P ) {
|
|
av_log(avctx, AV_LOG_ERROR, "Xvid: Color spaces other than 420p not supported\n");
|
|
return -1;
|
|
}
|
|
|
|
xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
|
|
|
|
for( i = 0; i < 4; i++ ) {
|
|
xvid_enc_frame.input.plane[i] = picture->data[i];
|
|
xvid_enc_frame.input.stride[i] = picture->linesize[i];
|
|
}
|
|
|
|
/* Encoder Flags */
|
|
xvid_enc_frame.vop_flags = x->vop_flags;
|
|
xvid_enc_frame.vol_flags = x->vol_flags;
|
|
xvid_enc_frame.motion = x->me_flags;
|
|
xvid_enc_frame.type =
|
|
picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
|
|
picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
|
|
picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
|
|
XVID_TYPE_AUTO;
|
|
|
|
/* Pixel aspect ratio setting */
|
|
if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 ||
|
|
avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) {
|
|
av_log(avctx, AV_LOG_WARNING,
|
|
"Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
|
|
avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
|
|
av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
|
|
avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255);
|
|
}
|
|
xvid_enc_frame.par = XVID_PAR_EXT;
|
|
xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
|
|
xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
|
|
|
|
/* Quant Setting */
|
|
if( x->qscale ) xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
|
|
else xvid_enc_frame.quant = 0;
|
|
|
|
/* Matrices */
|
|
xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
|
|
xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
|
|
|
|
/* Encode */
|
|
xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
|
|
&xvid_enc_frame, &xvid_enc_stats);
|
|
|
|
/* Two-pass log buffer swapping */
|
|
avctx->stats_out = NULL;
|
|
if( x->twopassbuffer ) {
|
|
tmp = x->old_twopassbuffer;
|
|
x->old_twopassbuffer = x->twopassbuffer;
|
|
x->twopassbuffer = tmp;
|
|
x->twopassbuffer[0] = 0;
|
|
if( x->old_twopassbuffer[0] != 0 ) {
|
|
avctx->stats_out = x->old_twopassbuffer;
|
|
}
|
|
}
|
|
|
|
if (xerr > 0) {
|
|
*got_packet = 1;
|
|
|
|
p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
|
|
if( xvid_enc_stats.type == XVID_TYPE_PVOP )
|
|
p->pict_type = AV_PICTURE_TYPE_P;
|
|
else if( xvid_enc_stats.type == XVID_TYPE_BVOP )
|
|
p->pict_type = AV_PICTURE_TYPE_B;
|
|
else if( xvid_enc_stats.type == XVID_TYPE_SVOP )
|
|
p->pict_type = AV_PICTURE_TYPE_S;
|
|
else
|
|
p->pict_type = AV_PICTURE_TYPE_I;
|
|
if( xvid_enc_frame.out_flags & XVID_KEYFRAME ) {
|
|
p->key_frame = 1;
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
if( x->quicktime_format )
|
|
return xvid_strip_vol_header(avctx, pkt,
|
|
xvid_enc_stats.hlength, xerr);
|
|
} else
|
|
p->key_frame = 0;
|
|
|
|
pkt->size = xerr;
|
|
|
|
return 0;
|
|
} else {
|
|
if (!user_packet)
|
|
av_free_packet(pkt);
|
|
if (!xerr)
|
|
return 0;
|
|
av_log(avctx, AV_LOG_ERROR, "Xvid: Encoding Error Occurred: %i\n", xerr);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static av_cold int xvid_encode_close(AVCodecContext *avctx) {
|
|
struct xvid_context *x = avctx->priv_data;
|
|
|
|
if(x->encoder_handle)
|
|
xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
|
|
x->encoder_handle = NULL;
|
|
|
|
av_freep(&avctx->extradata);
|
|
if( x->twopassbuffer != NULL ) {
|
|
av_freep(&x->twopassbuffer);
|
|
av_freep(&x->old_twopassbuffer);
|
|
avctx->stats_out = NULL;
|
|
}
|
|
if (x->twopassfd>=0) {
|
|
unlink(x->twopassfile);
|
|
close(x->twopassfd);
|
|
x->twopassfd = -1;
|
|
}
|
|
av_freep(&x->twopassfile);
|
|
av_freep(&x->intra_matrix);
|
|
av_freep(&x->inter_matrix);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(struct xvid_context, x)
|
|
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
|
|
static const AVOption options[] = {
|
|
{ "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
|
|
{ "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
|
|
{ "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" },
|
|
{ "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" },
|
|
{ "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" },
|
|
{ "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" },
|
|
{ "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass xvid_class = {
|
|
.class_name = "libxvid",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
AVCodec ff_libxvid_encoder = {
|
|
.name = "libxvid",
|
|
.long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_MPEG4,
|
|
.priv_data_size = sizeof(struct xvid_context),
|
|
.init = xvid_encode_init,
|
|
.encode2 = xvid_encode_frame,
|
|
.close = xvid_encode_close,
|
|
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
|
|
.priv_class = &xvid_class,
|
|
};
|