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@ -824,16 +824,17 @@ int dv_produce_packet(DVDemuxContext *c, AVPacket *pkt, |
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int64_t dv_frame_offset(DVDemuxContext *c, int64_t timestamp) |
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int64_t dv_frame_offset(DVDemuxContext *c, int64_t timestamp) |
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{ |
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{ |
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const DVprofile* sys; |
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const DVprofile* sys; |
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int64_t frame_number, offset; |
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// FIXME: sys may be wrong if last dv_read_packet() failed (buffer is junk)
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// FIXME: sys may be wrong if last dv_read_packet() failed (buffer is junk)
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sys = dv_codec_profile(&c->vst->codec); |
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sys = dv_codec_profile(&c->vst->codec); |
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// timestamp was scaled by time_base/AV_BASE_RATE by av_seek_frame()
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// timestamp was scaled by time_base/AV_BASE_RATE by av_seek_frame()
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int64_t frame_number = av_rescale(sys->frame_rate, timestamp,
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frame_number = av_rescale(sys->frame_rate, timestamp,
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(int64_t) 30000 * sys->frame_rate_base); |
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(int64_t) 30000 * sys->frame_rate_base); |
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// offset must be a multiple of frame_size else dv_read_packet() will fail
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// offset must be a multiple of frame_size else dv_read_packet() will fail
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int64_t offset = (int64_t) sys->frame_size * frame_number; |
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offset = (int64_t) sys->frame_size * frame_number; |
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return offset; |
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return offset; |
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} |
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} |
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