コード例 #1
1
ファイル: muxer.go プロジェクト: qianbo0423/media-muxer
func (m *Muxer) writeAudioFrame(frame *C.AVFrame) bool {
	for C.av_audio_fifo_size(m.fifo) < 1024 { // generate & store in fifo
		C.fill_audio_frame(frame, m.audioStream.stream.codec)
		frame_size := frame.nb_samples
		if C.av_audio_fifo_realloc(m.fifo, C.av_audio_fifo_size(m.fifo)+frame_size) < 0 {
			return false
		}
		if C.av_audio_fifo_write(m.fifo, (*unsafe.Pointer)(unsafe.Pointer(&frame.data[0])), frame_size) < frame_size {
			return false
		}
	}
	got_packet := C.int(0)
	for C.av_audio_fifo_size(m.fifo) >= 1024 { // read & encode & write
		frame_size := C.min(C.av_audio_fifo_size(m.fifo), m.audioStream.stream.codec.frame_size)
		output_frame := C.alloc_audio_frame(m.audioStream.stream.codec)
		if C.av_audio_fifo_read(m.fifo, (*unsafe.Pointer)(unsafe.Pointer(&output_frame.data[0])), frame_size) < frame_size {
			C.av_frame_free(&output_frame)
			return false
		}
		pkt := C.AVPacket{}
		C.av_init_packet(&pkt)
		output_frame.pts = C.int64_t(m.audioStream.ts)
		m.audioStream.ts += int(m.audioStream.stream.codec.frame_size)
		if C.avcodec_encode_audio2(m.audioStream.stream.codec, &pkt, frame, &got_packet) < 0 {
			C.av_free_packet(&pkt)
			return false
		}
		if got_packet == 0 {
			continue
		}
		C.av_packet_rescale_ts(&pkt, m.audioStream.stream.codec.time_base, m.audioStream.stream.time_base)
		pkt.stream_index = m.audioStream.stream.index
		if C.av_interleaved_write_frame(m.context, &pkt) < 0 {
			return false
		}
	}
	return true
}
コード例 #2
0
ファイル: muxer.go プロジェクト: qianbo0423/media-muxer
func (m *Muxer) writeVideoFrame(frame *C.AVFrame) bool {
	if m.capture.Read(frame) != nil {
		return false
	}
	if m.display != nil {
		m.display.Render(frame)
	}
	pkt := C.AVPacket{}
	C.av_init_packet(&pkt)
	frame.pts = C.int64_t(m.videoStream.ts)
	m.videoStream.ts++
	got_packet := C.int(0)
	if C.avcodec_encode_video2(m.videoStream.stream.codec, &pkt, frame, &got_packet) < 0 {
		C.av_free_packet(&pkt)
		return false
	}
	if got_packet == 0 {
		return false
	}
	C.av_packet_rescale_ts(&pkt, m.videoStream.stream.codec.time_base, m.videoStream.stream.time_base)
	pkt.stream_index = m.videoStream.stream.index
	return C.av_interleaved_write_frame(m.context, &pkt) == 0
}
コード例 #3
0
ファイル: packet.go プロジェクト: gale320/goav
//Convert valid timing fields (timestamps / durations) in a packet from one timebase to another.
func (p *Packet) AvPacketRescaleTs(r, r2 Rational) {
	C.av_packet_rescale_ts((*C.struct_AVPacket)(p), (C.struct_AVRational)(r), (C.struct_AVRational)(r2))
}
コード例 #4
0
ファイル: avcodec.go プロジェクト: stephenwithav/goav
//Convert valid timing fields (timestamps / durations) in a packet from one timebase to another.
//void 	av_packet_rescale_ts (AVPacket *pkt, AVRational tb_src, AVRational tb_dst)
func Av_packet_rescale_ts(p *AVPacket, r, r2 AVRational) {
	C.av_packet_rescale_ts((*C.struct_AVPacket)(p), (C.struct_AVRational)(r), (C.struct_AVRational)(r2))
}