audioconvert.h File Reference

Audio format conversion routines. More...

#include "swresample_internal.h"
#include "libavutil/cpu.h"

Go to the source code of this file.

Data Structures
struct	AudioConvert

Typedefs
typedef void()	conv_func_type(uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)
typedef void()	simd_func_type(uint8_t **dst, const uint8_t **src, int len)

Functions
AudioConvert *	swri_audio_convert_alloc (enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags)
	Create an audio sample format converter context. More...
void	swri_audio_convert_free (AudioConvert **ctx)
	Free audio sample format converter context. More...
int	swri_audio_convert (AudioConvert *ctx, AudioData *out, AudioData *in, int len)
	Convert between audio sample formats. More...

Detailed Description

Audio format conversion routines.

Definition in file audioconvert.h.

Typedef Documentation

conv_func_type

typedef void() conv_func_type(uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)

Definition at line 36 of file audioconvert.h.

simd_func_type

typedef void() simd_func_type(uint8_t **dst, const uint8_t **src, int len)

Definition at line 37 of file audioconvert.h.

Function Documentation

swri_audio_convert_alloc()

AudioConvert* swri_audio_convert_alloc	(	enum AVSampleFormat	out_fmt,
		enum AVSampleFormat	in_fmt,
		int	channels,
		const int *	ch_map,
		int	flags
	)

Create an audio sample format converter context.

Parameters

out_fmt	Output sample format
in_fmt	Input sample format
channels	Number of channels
flags	See AV_CPU_FLAG_xx
ch_map	list of the channels id to pick from the source stream, NULL if all channels must be selected

Returns

NULL on error

Referenced by swr_init().

swri_audio_convert_free()

void swri_audio_convert_free

(

AudioConvert **

ctx

)

Free audio sample format converter context.

and set the pointer to NULL

Referenced by clear_context().

swri_audio_convert()

int swri_audio_convert	(	AudioConvert *	ctx,
		AudioData *	out,
		AudioData *	in,
		int	len
	)

Convert between audio sample formats.

Parameters

[in]	out	array of output buffers for each channel. set to NULL to ignore processing of the given channel.
[in]	in	array of input buffers for each channel
	len	length of audio frame size (measured in samples)

Referenced by swr_convert_internal().