mirror of https://git.ffmpeg.org/ffmpeg.git
Seek function for TMV
Originally committed as revision 20336 to svn://svn.ffmpeg.org/ffmpeg/trunk
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0319ba5e12
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@ -43,6 +43,8 @@ typedef struct TMVContext {
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unsigned stream_index;
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} TMVContext;
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#define TMV_HEADER_SIZE 12
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#define PROBE_MIN_SAMPLE_RATE 5000
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#define PROBE_MAX_FPS 120
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#define PROBE_MIN_AUDIO_SIZE (PROBE_MIN_SAMPLE_RATE / PROBE_MAX_FPS)
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@ -160,6 +162,23 @@ static int tmv_read_packet(AVFormatContext *s, AVPacket *pkt)
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return ret;
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}
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static int tmv_read_seek(AVFormatContext *s, int stream_index,
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int64_t timestamp, int flags)
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{
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TMVContext *tmv = s->priv_data;
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int64_t pos;
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if (stream_index)
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return -1;
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pos = timestamp *
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(tmv->audio_chunk_size + tmv->video_chunk_size + tmv->padding);
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url_fseek(s->pb, pos + TMV_HEADER_SIZE, SEEK_SET);
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tmv->stream_index = 0;
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return 0;
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}
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AVInputFormat tmv_demuxer = {
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"tmv",
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NULL_IF_CONFIG_SMALL("8088flex TMV"),
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@ -167,5 +186,7 @@ AVInputFormat tmv_demuxer = {
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tmv_probe,
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tmv_read_header,
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tmv_read_packet,
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NULL,
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tmv_read_seek,
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.flags = AVFMT_GENERIC_INDEX,
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};
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