mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-24 16:22:37 +00:00
7a72695c05
* 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>
94 lines
2.5 KiB
C
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
|