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This commit is contained in:
nareix 2016-07-30 15:03:43 +08:00
parent 0b0eeeefbf
commit 7fc65516ab
1 changed files with 11 additions and 11 deletions
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22
av/av.go
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@ -76,7 +76,7 @@ func (self SampleFormat) IsPlanar() bool {
}
}
// Audio channel layout
// Audio channel layout.
type ChannelLayout uint16
func (self ChannelLayout) String() string {
@ -153,13 +153,13 @@ func (self CodecType) IsVideo() bool {
return self&codecTypeAudioBit == 0
}
// Make a new audio codec type
// Make a new audio codec type.
func MakeAudioCodecType(base uint32) (c CodecType) {
c = CodecType(base)<<codecTypeOtherBits | CodecType(codecTypeAudioBit)
return
}
// Make a new video codec type
// Make a new video codec type.
func MakeVideoCodecType(base uint32) (c CodecType) {
c = CodecType(base) << codecTypeOtherBits
return
@ -172,7 +172,7 @@ const avCodecTypeMagic = 233333
//
// codecdata.(AudioCodecData) or codecdata.(VideoCodecData)
//
// for H264, CodecData is AVCDecoderConfigure bytes, includes SPS/PPS
// for H264, CodecData is AVCDecoderConfigure bytes, includes SPS/PPS.
type CodecData interface {
Type() CodecType // Video/Audio codec type
}
@ -205,7 +205,7 @@ type PacketReader interface {
type Muxer interface {
WriteHeader([]CodecData) error // write the file header
PacketWriter // write compressed audio/video packets
WriteTrailer() error // end writing, complete file. can be called only once
WriteTrailer() error // finish writing file, this func can be called only once
}
// Muxer with Close() method
@ -226,7 +226,7 @@ type DemuxCloser interface {
Close() error
}
// Packet stores compressed audio/video data
// Packet stores compressed audio/video data.
type Packet struct {
IsKeyFrame bool // video packet is key frame
Idx int8 // stream index in container format
@ -235,7 +235,7 @@ type Packet struct {
Data []byte // packet data
}
// Raw audio frame
// Raw audio frame.
type AudioFrame struct {
SampleFormat SampleFormat // audio sample format, e.g: S16,FLTP,...
ChannelLayout ChannelLayout // audio channel layout, e.g: CH_MONO,CH_STEREO,...
@ -248,7 +248,7 @@ func (self AudioFrame) Duration() time.Duration {
return time.Second * time.Duration(self.SampleCount) / time.Duration(self.SampleRate)
}
// Check this audio frame has same format as other audio frame
// Check this audio frame has same format as other audio frame.
func (self AudioFrame) HasSameFormat(other AudioFrame) bool {
if self.SampleRate != other.SampleRate {
return false
@ -262,7 +262,7 @@ func (self AudioFrame) HasSameFormat(other AudioFrame) bool {
return true
}
// Split sample audio sample from this frame
// Split sample audio sample from this frame.
func (self AudioFrame) Slice(start int, end int) (out AudioFrame) {
out = self
out.Data = append([][]byte(nil), out.Data...)
@ -274,7 +274,7 @@ func (self AudioFrame) Slice(start int, end int) (out AudioFrame) {
return
}
// Concat two audio frames
// Concat two audio frames.
func (self AudioFrame) Concat(in AudioFrame) (out AudioFrame) {
out = self
out.Data = append([][]byte(nil), out.Data...)
@ -306,7 +306,7 @@ type AudioDecoder interface {
Close() // close decode, free cgo contexts
}
// AudioResampler can convert raw audio frames in different sample rate/format/channel layout
// AudioResampler can convert raw audio frames in different sample rate/format/channel layout.
type AudioResampler interface {
Resample(AudioFrame) (AudioFrame, error) // convert raw audio frames
}