mirror of
https://github.com/asticode/go-astiav.git
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114 lines
2.2 KiB
Go
114 lines
2.2 KiB
Go
package astiav
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//#cgo pkg-config: libavformat
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//#include <libavformat/avformat.h>
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import "C"
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import (
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"errors"
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"unsafe"
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)
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// https://github.com/FFmpeg/FFmpeg/blob/n5.0/libavformat/avformat.h#L937
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type Stream struct {
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c *C.struct_AVStream
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}
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func newStreamFromC(c *C.struct_AVStream) *Stream {
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if c == nil {
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return nil
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}
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return &Stream{c: c}
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}
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func (s *Stream) AvgFrameRate() Rational {
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return newRationalFromC(s.c.avg_frame_rate)
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}
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func (s *Stream) SetAvgFrameRate(r Rational) {
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s.c.avg_frame_rate = r.c
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}
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func (s *Stream) CodecParameters() *CodecParameters {
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return newCodecParametersFromC(s.c.codecpar)
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}
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func (s *Stream) Duration() int64 {
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return int64(s.c.duration)
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}
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func (s *Stream) EventFlags() StreamEventFlags {
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return StreamEventFlags(s.c.event_flags)
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}
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func (s *Stream) ID() int {
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return int(s.c.id)
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}
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func (s *Stream) SetID(i int) {
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s.c.id = C.int(i)
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}
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func (s *Stream) Index() int {
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return int(s.c.index)
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}
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func (s *Stream) SetIndex(i int) {
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s.c.index = C.int(i)
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}
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func (s *Stream) Metadata() *Dictionary {
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return newDictionaryFromC(s.c.metadata)
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}
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func (s *Stream) NbFrames() int64 {
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return int64(s.c.nb_frames)
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}
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func (s *Stream) RFrameRate() Rational {
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return newRationalFromC(s.c.r_frame_rate)
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}
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func (s *Stream) SetRFrameRate(r Rational) {
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s.c.r_frame_rate = r.c
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}
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func (s *Stream) SampleAspectRatio() Rational {
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return newRationalFromC(s.c.sample_aspect_ratio)
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}
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func (s *Stream) SetSampleAspectRatio(r Rational) {
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s.c.sample_aspect_ratio = r.c
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}
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func (s *Stream) SideData(t PacketSideDataType) []byte {
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return bytesFromC(func(size *C.size_t) *C.uint8_t {
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return C.av_stream_get_side_data(s.c, (C.enum_AVPacketSideDataType)(t), size)
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})
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}
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func (s *Stream) AddSideData(t PacketSideDataType, d []byte) error {
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if len(d) == 0 {
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return nil
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}
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ptr := C.av_stream_new_side_data(s.c, (C.enum_AVPacketSideDataType)(t), C.size_t(len(d)))
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if ptr == nil {
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return errors.New("astiav: nil pointer")
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}
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C.memcpy(unsafe.Pointer(ptr), unsafe.Pointer(&d[0]), C.size_t(len(d)))
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return nil
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}
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func (s *Stream) StartTime() int64 {
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return int64(s.c.start_time)
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}
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func (s *Stream) TimeBase() Rational {
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return newRationalFromC(s.c.time_base)
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}
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func (s *Stream) SetTimeBase(r Rational) {
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s.c.time_base = r.c
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}
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