mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
a369a6b858
* qatar/master: (29 commits) fate: add golomb-test golomb-test: K&R formatting cosmetics h264: Split h264-test off into a separate file - golomb-test.c. h264-test: cleanup: drop timer invocations, commented out code and other cruft h264-test: Remove unused DSP and AVCodec contexts and related init calls. adpcm: Add missing stdint.h #include to fix standalone header compilation. lavf: add functions for accessing the fourcc<->CodecID mapping tables. lavc: set AVCodecContext.codec in avcodec_get_context_defaults3(). lavc: make avcodec_close() work properly on unopened codecs. lavc: add avcodec_is_open(). lavf: rename AVInputFormat.value to raw_codec_id. lavf: remove the pointless value field from flv and iv8 lavc/lavf: remove unnecessary symbols from the symbol version script. lavc: reorder AVCodec fields. lavf: reorder AVInput/OutputFormat fields. mp3dec: Fix a heap-buffer-overflow adpcmenc: remove some unneeded casts adpcmenc: use int16_t and uint8_t instead of short and unsigned char. adpcmenc: fix adpcm_ms extradata allocation adpcmenc: return proper AVERROR codes instead of -1 ... Conflicts: doc/APIchanges libavcodec/Makefile libavcodec/adpcmenc.c libavcodec/avcodec.h libavcodec/h264.c libavcodec/libavcodec.v libavcodec/mpc7.c libavcodec/mpegaudiodec.c libavcodec/options.c libavformat/Makefile libavformat/avformat.h libavformat/flvdec.c libavformat/libavformat.v Merged-by: Michael Niedermayer <michaelni@gmx.at>
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 2009 Michael Niedermayer
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
|
|
|
|
static int probe(AVProbeData *p)
|
|
{
|
|
// the single file I have starts with that, I do not know if others do, too
|
|
if( p->buf[0] == 1
|
|
&& p->buf[1] == 1
|
|
&& p->buf[2] == 3
|
|
&& p->buf[3] == 0xB8
|
|
&& p->buf[4] == 0x80
|
|
&& p->buf[5] == 0x60
|
|
)
|
|
return AVPROBE_SCORE_MAX-2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int read_header(AVFormatContext *s)
|
|
{
|
|
AVStream *st;
|
|
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
st->codec->codec_id = CODEC_ID_MPEG4;
|
|
st->need_parsing = AVSTREAM_PARSE_FULL;
|
|
avpriv_set_pts_info(st, 64, 1, 90000);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int ret, size, pts, type, flags;
|
|
int first_pkt = 0;
|
|
int frame_complete = 0;
|
|
|
|
while (!frame_complete) {
|
|
|
|
type = avio_rb16(s->pb); // 257 or 258
|
|
size = avio_rb16(s->pb);
|
|
flags = avio_rb16(s->pb); //some flags, 0x80 indicates end of frame
|
|
avio_rb16(s->pb); //packet number
|
|
pts = avio_rb32(s->pb);
|
|
avio_rb32(s->pb); //6A 13 E3 88
|
|
|
|
frame_complete = flags & 0x80;
|
|
|
|
size -= 12;
|
|
if (size < 1)
|
|
return -1;
|
|
|
|
if (type == 258) {
|
|
avio_skip(s->pb, size);
|
|
frame_complete = 0;
|
|
continue;
|
|
}
|
|
|
|
if (!first_pkt) {
|
|
ret = av_get_packet(s->pb, pkt, size);
|
|
if (ret < 0)
|
|
return ret;
|
|
first_pkt = 1;
|
|
pkt->pts = pts;
|
|
pkt->pos -= 16;
|
|
} else {
|
|
ret = av_append_packet(s->pb, pkt, size);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "failed to grow packet\n");
|
|
av_free_packet(pkt);
|
|
return ret;
|
|
}
|
|
}
|
|
if (ret < size) {
|
|
av_log(s, AV_LOG_ERROR, "Truncated packet! Read %d of %d bytes\n",
|
|
ret, size);
|
|
pkt->flags |= AV_PKT_FLAG_CORRUPT;
|
|
break;
|
|
}
|
|
}
|
|
pkt->stream_index = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat ff_iv8_demuxer = {
|
|
.name = "iv8",
|
|
.long_name = NULL_IF_CONFIG_SMALL("A format generated by IndigoVision 8000 video server"),
|
|
.read_probe = probe,
|
|
.read_header = read_header,
|
|
.read_packet = read_packet,
|
|
.flags= AVFMT_GENERIC_INDEX,
|
|
};
|