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https://github.com/xenia-project/FFmpeg.git
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7fad19a63d
* qatar/master: x86: cabac: replace explicit memory references with "m" operands avplay: don't request a stereo downmix wmapro: use av_float2int() lavc: avoid invalid memcpy() in avcodec_default_release_buffer() lavu: replace int/float punning functions lavfi: install libavfilter/vsrc_buffer.h Remove extraneous semicolons sdp: Restore the original mp4 format h264 extradata if converted rtpenc: Add support for mp4 format h264 rtpenc: Simplify code by introducing a separate end pointer movenc: Use the actual converted sample for RTP hinting Fix a bunch of common typos. Conflicts: doc/developer.texi doc/eval.texi doc/filters.texi doc/protocols.texi ffmpeg.c ffplay.c libavcodec/mpegvideo.h libavcodec/x86/cabac.h libavfilter/Makefile libavformat/avformat.h libavformat/cafdec.c libavformat/flvdec.c libavformat/flvenc.c libavformat/gxfenc.c libavformat/img2.c libavformat/movenc.c libavformat/mpegts.c libavformat/rtpenc_h264.c libavformat/utils.c libavformat/wtv.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/*
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* Copyright (c) 2009 Michael Niedermayer
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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 "avformat.h"
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#include "internal.h"
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static int probe(AVProbeData *p)
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{
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// the single file I have starts with that, I do not know if others do, too
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if( p->buf[0] == 1
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&& p->buf[1] == 1
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&& p->buf[2] == 3
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&& p->buf[3] == 0xB8
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&& p->buf[4] == 0x80
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&& p->buf[5] == 0x60
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)
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return AVPROBE_SCORE_MAX-2;
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return 0;
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}
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static int read_header(AVFormatContext *s, AVFormatParameters *ap)
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{
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AVStream *st;
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st = avformat_new_stream(s, NULL);
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if (!st)
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return AVERROR(ENOMEM);
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st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
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st->codec->codec_id = CODEC_ID_MPEG4;
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st->need_parsing = AVSTREAM_PARSE_FULL;
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avpriv_set_pts_info(st, 64, 1, 90000);
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return 0;
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}
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static int read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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int ret, size, pts, type, flags;
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int first_pkt = 0;
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int frame_complete = 0;
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while (!frame_complete) {
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type = avio_rb16(s->pb); // 257 or 258
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size = avio_rb16(s->pb);
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flags = avio_rb16(s->pb); //some flags, 0x80 indicates end of frame
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avio_rb16(s->pb); //packet number
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pts = avio_rb32(s->pb);
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avio_rb32(s->pb); //6A 13 E3 88
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frame_complete = flags & 0x80;
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size -= 12;
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if (size < 1)
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return -1;
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if (type == 258) {
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avio_skip(s->pb, size);
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frame_complete = 0;
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continue;
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}
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if (!first_pkt) {
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ret = av_get_packet(s->pb, pkt, size);
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if (ret < 0)
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return ret;
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first_pkt = 1;
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pkt->pts = pts;
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pkt->pos -= 16;
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} else {
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ret = av_append_packet(s->pb, pkt, size);
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if (ret < 0) {
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av_log(s, AV_LOG_ERROR, "failed to grow packet\n");
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av_free_packet(pkt);
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return ret;
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}
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}
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if (ret < size) {
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av_log(s, AV_LOG_ERROR, "Truncated packet! Read %d of %d bytes\n",
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ret, size);
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pkt->flags |= AV_PKT_FLAG_CORRUPT;
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break;
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}
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}
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pkt->stream_index = 0;
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return 0;
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}
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AVInputFormat ff_iv8_demuxer = {
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.name = "iv8",
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.long_name = NULL_IF_CONFIG_SMALL("A format generated by IndigoVision 8000 video server"),
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.read_probe = probe,
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.read_header = read_header,
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.read_packet = read_packet,
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.flags= AVFMT_GENERIC_INDEX,
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.value = CODEC_ID_MPEG4,
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};
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