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Add SeekFile method to FormatContext for file seeking functionality #159

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divyam234 wants to merge 3 commits into from
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Add SeekFile method to FormatContext for file seeking functionality #159

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50f87eb
Add SeekFile method to FormatContext for file seeking functionality
divyam234 Jun 29, 2025
26c8ade
Add FlushBuffers method to CodecContext for buffer flushing functiona…
divyam234 Jun 29, 2025
8392791
Merge branch 'asticode:master' into master
divyam234 Dec 8, 2025
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5 changes: 5 additions & 0 deletions codec_context.go
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Original file line number Diff line number Diff line change
Expand Up @@ -528,3 +528,8 @@ func (cc *CodecContext) RateControlBufferSize() int {
func (cc *CodecContext) SetRateControlBufferSize(n int) {
cc.c.rc_buffer_size = C.int(n)
}

// https://ffmpeg.org/doxygen/7.0/group__lavc__misc.html#gaf60b0e076f822abcb2700eb601d352a6
func (cc *CodecContext) FlushBuffers() {
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@asticode asticode Jun 30, 2025

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Could you add some test?

Just calling this new method here without checking anything should validate it doesn't crash 👍

C.avcodec_flush_buffers(cc.c)
}
5 changes: 5 additions & 0 deletions format_context.go
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Expand Up @@ -297,6 +297,11 @@ func (fc *FormatContext) SeekFrame(streamIndex int, timestamp int64, f SeekFlags
return newError(C.av_seek_frame(fc.c, C.int(streamIndex), C.int64_t(timestamp), C.int(f)))
}

// https://ffmpeg.org/doxygen/7.0/group__lavf__decoding.html#ga3b40fc8d2fda6992ae6ea2567d71ba30
func (fc *FormatContext) SeekFile(streamIndex int, mints, timestamp, maxts int64, f SeekFlags) error {
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@asticode asticode Jun 30, 2025

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Could you add some tests below this?

return newError(C.avformat_seek_file(fc.c, C.int(streamIndex), C.int64_t(mints), C.int64_t(timestamp), C.int64_t(maxts), C.int(f)))
}

// https://ffmpeg.org/doxygen/7.0/group__lavf__decoding.html#gaa03a82c5fd4fe3af312d229ca94cd6f3
func (fc *FormatContext) Flush() error {
return newError(C.avformat_flush(fc.c))
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5 changes: 5 additions & 0 deletions mathematics.go
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Expand Up @@ -3,6 +3,11 @@ package astiav
//#include <libavutil/mathematics.h>
import "C"

// https://ffmpeg.org/doxygen/7.0/group__lavu__math.html#ga3daf97178dd1b08b5e916be381cd33e4
func Rescale(a, b, c int64) int64 {
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@asticode asticode Jun 30, 2025

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Could you add some tests above this?

return int64(C.av_rescale(C.int64_t(a), C.int64_t(b), C.int64_t(c)))
}

// https://ffmpeg.org/doxygen/7.0/group__lavu__math.html#gaf02994a8bbeaa91d4757df179cbe567f
func RescaleQ(a int64, b Rational, c Rational) int64 {
return int64(C.av_rescale_q(C.int64_t(a), b.c, c.c))
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