diff options
Diffstat (limited to 'libavformat/iv8.c')
-rw-r--r-- | libavformat/iv8.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/libavformat/iv8.c b/libavformat/iv8.c new file mode 100644 index 0000000000..33894ad9f8 --- /dev/null +++ b/libavformat/iv8.c @@ -0,0 +1,91 @@ +/* + * 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" + + +static int probe(AVProbeData *p) +{ + // the single file i have starts with that, i dont 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, AVFormatParameters *ap) +{ + AVStream *st; + + st = av_new_stream(s, 0); + if (!st) + return AVERROR(ENOMEM); + + st->codec->codec_type = CODEC_TYPE_VIDEO; + st->codec->codec_id = CODEC_ID_MPEG4; + st->need_parsing = AVSTREAM_PARSE_FULL; + av_set_pts_info(st, 64, 1, 90000); + + return 0; + +} + +static int read_packet(AVFormatContext *s, AVPacket *pkt) +{ + int ret, size, pts; + + get_be16(s->pb); // 257 + size= get_be16(s->pb); + + get_be16(s->pb); //some flags, 0x80 indicates end of frame + get_be16(s->pb); //packet number + pts=get_be32(s->pb); + get_be32(s->pb); //6A 13 E3 88 + + size -= 12; + if(size<1) + return -1; + + ret= av_get_packet(s->pb, pkt, size); + + pkt->pts= pkt->dts= pts; + pkt->pos-=16; + + pkt->stream_index = 0; + + return ret; +} + +AVInputFormat iv8_demuxer = { + "iv8", + NULL_IF_CONFIG_SMALL("A format generated by IndigoVision 8000 video server"), + 0, + probe, + read_header, + read_packet, + .flags= AVFMT_GENERIC_INDEX, + .value = CODEC_ID_MPEG4, +}; |