Documentation
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Overview ¶
Package libswresample provides a high-level interface to the libswresample library audio resampling utilities The process of changing the sampling rate of a discrete signal to obtain a new discrete representation of the underlying continuous signal.
Index ¶
- func SwresampleConfiguration() string
- func SwresampleLicense() string
- func SwresampleVersion() uint
- type AvClass
- type AvFrame
- type AvSampleFormat
- type SwrContext
- func (ctx *SwrContext) SwrAllocSetOpts(outChLayout int64, outSampleFmt AvSampleFormat, outSampleRate int, ...) *SwrContext
- func (ctx *SwrContext) SwrClose()
- func (ctx *SwrContext) SwrConfigFrame(output, input *AvFrame) int
- func (ctx *SwrContext) SwrConvert(out **uint8, outCount int, in **uint8, inCount int) int
- func (ctx *SwrContext) SwrConvertFrame(output, input *AvFrame) int
- func (ctx *SwrContext) SwrDropOutput(count int) int
- func (ctx *SwrContext) SwrFree()
- func (ctx *SwrContext) SwrGetDelay(base int64) int64
- func (ctx *SwrContext) SwrInit() int
- func (ctx *SwrContext) SwrInjectSilence(count int) int
- func (ctx *SwrContext) SwrIsInitialized() int
- func (ctx *SwrContext) SwrNextPts(pts int64) int64
- func (ctx *SwrContext) SwrSetChannelMapping(channelMap *int) int
- func (ctx *SwrContext) SwrSetCompensation(sampleDelta, compensationDistance int) int
- func (ctx *SwrContext) SwrSetMatrix(matrix *int, stride int) int
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func SwresampleConfiguration ¶
func SwresampleConfiguration() string
SwresampleConfiguration Return the swr build-time configuration.
Types ¶
type AvClass ¶ added in v1.1.2
type AvClass C.struct_AVClass
type AvFrame ¶ added in v1.1.2
type AvFrame C.struct_AVFrame
type AvSampleFormat ¶
type AvSampleFormat C.enum_AVSampleFormat
type SwrContext ¶ added in v1.1.2
type SwrContext C.struct_SwrContext
func SwrAlloc ¶
func SwrAlloc() *SwrContext
SwrAlloc Context constructor functions.Allocate Context.
func (*SwrContext) SwrAllocSetOpts ¶ added in v1.1.2
func (ctx *SwrContext) SwrAllocSetOpts(outChLayout int64, outSampleFmt AvSampleFormat, outSampleRate int, inChLayout int64, inSampleFmt AvSampleFormat, inSampleRate, logOffset, logCtx int) *SwrContext
SwrAllocSetOpts Allocate Context if needed and set/reset common parameters.
func (*SwrContext) SwrClose ¶ added in v1.1.2
func (ctx *SwrContext) SwrClose()
SwrClose Closes the context so that swr_is_initialized() returns 0.
func (*SwrContext) SwrConfigFrame ¶ added in v1.1.2
func (ctx *SwrContext) SwrConfigFrame(output, input *AvFrame) int
SwrConfigFrame Configure or reconfigure the Context using the information provided by the AvFrames.
func (*SwrContext) SwrConvert ¶ added in v1.1.2
SwrConvert Core conversion functions. Convert audio
func (*SwrContext) SwrConvertFrame ¶ added in v1.1.2
func (ctx *SwrContext) SwrConvertFrame(output, input *AvFrame) int
SwrConvertFrame AvFrame based API. Convert the samples in the input AvFrame and write them to the output AvFrame.
func (*SwrContext) SwrDropOutput ¶ added in v1.1.2
func (ctx *SwrContext) SwrDropOutput(count int) int
SwrDropOutput Sample handling functions. Drops the specified number of output samples.
func (*SwrContext) SwrFree ¶ added in v1.1.2
func (ctx *SwrContext) SwrFree()
SwrFree Context destructor functions. Free the given Context and set the pointer to NULL.
func (*SwrContext) SwrGetDelay ¶ added in v1.1.2
func (ctx *SwrContext) SwrGetDelay(base int64) int64
SwrGetDelay Gets the delay the next input sample will experience relative to the next output sample.
func (*SwrContext) SwrInit ¶ added in v1.1.2
func (ctx *SwrContext) SwrInit() int
SwrInit Initialize context after user parameters have been set.
func (*SwrContext) SwrInjectSilence ¶ added in v1.1.2
func (ctx *SwrContext) SwrInjectSilence(count int) int
SwrInjectSilence Injects the specified number of silence samples.
func (*SwrContext) SwrIsInitialized ¶ added in v1.1.2
func (ctx *SwrContext) SwrIsInitialized() int
SwrIsInitialized Check whether an swr context has been initialized or not.
func (*SwrContext) SwrNextPts ¶ added in v1.1.2
func (ctx *SwrContext) SwrNextPts(pts int64) int64
SwrNextPts Convert the next timestamp from input to output timestamps are in 1/(in_sample_rate * out_sample_rate) units.
func (*SwrContext) SwrSetChannelMapping ¶ added in v1.1.2
func (ctx *SwrContext) SwrSetChannelMapping(channelMap *int) int
SwrSetChannelMapping Set a customized input channel mapping.
func (*SwrContext) SwrSetCompensation ¶ added in v1.1.2
func (ctx *SwrContext) SwrSetCompensation(sampleDelta, compensationDistance int) int
SwrSetCompensation Activate resampling compensation ("soft" compensation). This function is internally called when needed in swr_next_pts().
func (*SwrContext) SwrSetMatrix ¶ added in v1.1.2
func (ctx *SwrContext) SwrSetMatrix(matrix *int, stride int) int
SwrSetMatrix Set a customized remix matrix.
Source Files