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FFmpeg/libavcodec/rv34_parser.c
Michael Niedermayer 7a72695c05 Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85'
* commit '36ef5369ee9b336febc2c270f8718cec4476cb85':
  Replace all CODEC_ID_* with AV_CODEC_ID_*
  lavc: add AV prefix to codec ids.

Conflicts:
	doc/APIchanges
	doc/examples/decoding_encoding.c
	doc/examples/muxing.c
	ffmpeg.c
	ffprobe.c
	ffserver.c
	libavcodec/8svx.c
	libavcodec/avcodec.h
	libavcodec/dnxhd_parser.c
	libavcodec/dvdsubdec.c
	libavcodec/error_resilience.c
	libavcodec/h263dec.c
	libavcodec/libvorbisenc.c
	libavcodec/mjpeg_parser.c
	libavcodec/mjpegenc.c
	libavcodec/mpeg12.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c
	libavcodec/pcm.c
	libavcodec/r210dec.c
	libavcodec/utils.c
	libavcodec/v210dec.c
	libavcodec/version.h
	libavdevice/alsa-audio-dec.c
	libavdevice/bktr.c
	libavdevice/v4l2.c
	libavformat/asfdec.c
	libavformat/asfenc.c
	libavformat/avformat.h
	libavformat/avidec.c
	libavformat/caf.c
	libavformat/electronicarts.c
	libavformat/flacdec.c
	libavformat/flvdec.c
	libavformat/flvenc.c
	libavformat/framecrcenc.c
	libavformat/img2.c
	libavformat/img2dec.c
	libavformat/img2enc.c
	libavformat/ipmovie.c
	libavformat/isom.c
	libavformat/matroska.c
	libavformat/matroskadec.c
	libavformat/matroskaenc.c
	libavformat/mov.c
	libavformat/movenc.c
	libavformat/mp3dec.c
	libavformat/mpeg.c
	libavformat/mpegts.c
	libavformat/mxf.c
	libavformat/mxfdec.c
	libavformat/mxfenc.c
	libavformat/nsvdec.c
	libavformat/nut.c
	libavformat/oggenc.c
	libavformat/pmpdec.c
	libavformat/rawdec.c
	libavformat/rawenc.c
	libavformat/riff.c
	libavformat/sdp.c
	libavformat/utils.c
	libavformat/vocenc.c
	libavformat/wtv.c
	libavformat/xmv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-07 22:45:46 +02:00

94 lines
2.5 KiB
C

/*
* RV30/40 parser
* Copyright (c) 2011 Konstantin Shishkov
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* RV30/40 parser
*/
#include "parser.h"
#include "libavutil/intreadwrite.h"
typedef struct {
ParseContext pc;
int64_t key_dts;
int key_pts;
} RV34ParseContext;
static const int rv_to_av_frame_type[4] = {
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B,
};
static int rv34_parse(AVCodecParserContext *s,
AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size)
{
RV34ParseContext *pc = s->priv_data;
int type, pts, hdr;
if (buf_size < 13 + *buf * 8) {
*poutbuf = buf;
*poutbuf_size = buf_size;
return buf_size;
}
hdr = AV_RB32(buf + 9 + *buf * 8);
if (avctx->codec_id == AV_CODEC_ID_RV30) {
type = (hdr >> 27) & 3;
pts = (hdr >> 7) & 0x1FFF;
} else {
type = (hdr >> 29) & 3;
pts = (hdr >> 6) & 0x1FFF;
}
if (type != 3 && s->pts != AV_NOPTS_VALUE) {
pc->key_dts = s->pts;
pc->key_pts = pts;
} else {
if (type != 3)
s->pts = pc->key_dts + ((pts - pc->key_pts) & 0x1FFF);
else
s->pts = pc->key_dts - ((pc->key_pts - pts) & 0x1FFF);
}
s->pict_type = rv_to_av_frame_type[type];
*poutbuf = buf;
*poutbuf_size = buf_size;
return buf_size;
}
#if CONFIG_RV30_PARSER
AVCodecParser ff_rv30_parser = {
.codec_ids = { AV_CODEC_ID_RV30 },
.priv_data_size = sizeof(RV34ParseContext),
.parser_parse = rv34_parse,
};
#endif
#if CONFIG_RV40_PARSER
AVCodecParser ff_rv40_parser = {
.codec_ids = { AV_CODEC_ID_RV40 },
.priv_data_size = sizeof(RV34ParseContext),
.parser_parse = rv34_parse,
};
#endif