forked from KolibriOS/kolibrios
ffmpeg-2.8.5
git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
186
contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavcodec/pnmenc.c
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186
contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavcodec/pnmenc.c
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/*
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* PNM image format
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* Copyright (c) 2002, 2003 Fabrice Bellard
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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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#include "libavutil/pixdesc.h"
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#include "avcodec.h"
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#include "internal.h"
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static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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const AVFrame *p, int *got_packet)
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{
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uint8_t *bytestream, *bytestream_start, *bytestream_end;
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int i, h, h1, c, n, linesize, ret;
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uint8_t *ptr, *ptr1, *ptr2;
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if ((ret = ff_alloc_packet2(avctx, pkt, avpicture_get_size(avctx->pix_fmt,
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avctx->width,
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avctx->height) + 200, 0)) < 0)
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return ret;
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bytestream_start =
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bytestream = pkt->data;
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bytestream_end = pkt->data + pkt->size;
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h = avctx->height;
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h1 = h;
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switch (avctx->pix_fmt) {
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case AV_PIX_FMT_MONOWHITE:
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c = '4';
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n = (avctx->width + 7) >> 3;
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break;
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case AV_PIX_FMT_GRAY8:
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c = '5';
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n = avctx->width;
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break;
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case AV_PIX_FMT_GRAY16BE:
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c = '5';
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n = avctx->width * 2;
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break;
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case AV_PIX_FMT_RGB24:
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c = '6';
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n = avctx->width * 3;
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break;
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case AV_PIX_FMT_RGB48BE:
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c = '6';
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n = avctx->width * 6;
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break;
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case AV_PIX_FMT_YUV420P:
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if (avctx->width & 1 || avctx->height & 1) {
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av_log(avctx, AV_LOG_ERROR, "pgmyuv needs even width and height\n");
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return AVERROR(EINVAL);
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}
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c = '5';
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n = avctx->width;
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h1 = (h * 3) / 2;
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break;
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case AV_PIX_FMT_YUV420P16BE:
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c = '5';
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n = avctx->width * 2;
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h1 = (h * 3) / 2;
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break;
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default:
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return -1;
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}
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snprintf(bytestream, bytestream_end - bytestream,
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"P%c\n%d %d\n", c, avctx->width, h1);
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bytestream += strlen(bytestream);
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if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE) {
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int maxdepth = (1 << (av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1)) - 1;
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snprintf(bytestream, bytestream_end - bytestream,
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"%d\n", maxdepth);
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bytestream += strlen(bytestream);
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}
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ptr = p->data[0];
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linesize = p->linesize[0];
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for (i = 0; i < h; i++) {
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memcpy(bytestream, ptr, n);
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bytestream += n;
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ptr += linesize;
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}
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if (avctx->pix_fmt == AV_PIX_FMT_YUV420P || avctx->pix_fmt == AV_PIX_FMT_YUV420P16BE) {
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h >>= 1;
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n >>= 1;
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ptr1 = p->data[1];
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ptr2 = p->data[2];
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for (i = 0; i < h; i++) {
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memcpy(bytestream, ptr1, n);
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bytestream += n;
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memcpy(bytestream, ptr2, n);
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bytestream += n;
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ptr1 += p->linesize[1];
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ptr2 += p->linesize[2];
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}
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}
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pkt->size = bytestream - bytestream_start;
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pkt->flags |= AV_PKT_FLAG_KEY;
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*got_packet = 1;
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return 0;
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}
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static av_cold int pnm_encode_init(AVCodecContext *avctx)
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{
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#if FF_API_CODED_FRAME
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FF_DISABLE_DEPRECATION_WARNINGS
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avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
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avctx->coded_frame->key_frame = 1;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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return 0;
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}
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#if CONFIG_PGM_ENCODER
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AVCodec ff_pgm_encoder = {
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.name = "pgm",
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.long_name = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_PGM,
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.init = pnm_encode_init,
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.encode2 = pnm_encode_frame,
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.pix_fmts = (const enum AVPixelFormat[]){
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE
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},
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};
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#endif
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#if CONFIG_PGMYUV_ENCODER
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AVCodec ff_pgmyuv_encoder = {
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.name = "pgmyuv",
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.long_name = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_PGMYUV,
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.init = pnm_encode_init,
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.encode2 = pnm_encode_frame,
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.pix_fmts = (const enum AVPixelFormat[]){
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_NONE
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},
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};
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#endif
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#if CONFIG_PPM_ENCODER
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AVCodec ff_ppm_encoder = {
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.name = "ppm",
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.long_name = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_PPM,
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.init = pnm_encode_init,
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.encode2 = pnm_encode_frame,
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.pix_fmts = (const enum AVPixelFormat[]){
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AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48BE, AV_PIX_FMT_NONE
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},
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};
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#endif
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#if CONFIG_PBM_ENCODER
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AVCodec ff_pbm_encoder = {
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.name = "pbm",
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.long_name = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_PBM,
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.init = pnm_encode_init,
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.encode2 = pnm_encode_frame,
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.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_MONOWHITE,
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AV_PIX_FMT_NONE },
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};
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#endif
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