mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
a94eba6f0c
* commit '7f9f771eac0d37a632e0ed9bd89961d57fcfb7e0': avcodec: Don't anonymously typedef structs Conflicts: libavcodec/alac.c libavcodec/cinepak.c libavcodec/cscd.c libavcodec/dcadec.c libavcodec/g723_1.c libavcodec/gif.c libavcodec/iff.c libavcodec/kgv1dec.c libavcodec/libopenjpegenc.c libavcodec/libspeexenc.c libavcodec/ra288.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*
|
|
* RV30/40 parser
|
|
* Copyright (c) 2011 Konstantin Shishkov
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; 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 RV34ParseContext {
|
|
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
|