src/pcm_resample.h File Reference

#include "check.h"
#include "pcm_buffer.h"
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>

Go to the source code of this file.

Data Structures
struct	pcm_resample_state
	This object is statically allocated (within another struct), and holds buffer allocations and the state for the resampler. More...
Functions
bool	pcm_resample_global_init (GError **error_r)
void	pcm_resample_init (struct pcm_resample_state *state)
	Initializes a pcm_resample_state object.
void	pcm_resample_deinit (struct pcm_resample_state *state)
	Deinitializes a pcm_resample_state object and frees allocated memory.
const float *	pcm_resample_float (struct pcm_resample_state *state, unsigned channels, unsigned src_rate, const float *src_buffer, size_t src_size, unsigned dest_rate, size_t *dest_size_r, GError **error_r)
	Resamples 32 bit float data.
const int16_t *	pcm_resample_16 (struct pcm_resample_state *state, unsigned channels, unsigned src_rate, const int16_t *src_buffer, size_t src_size, unsigned dest_rate, size_t *dest_size_r, GError **error_r)
	Resamples 16 bit PCM data.
const int32_t *	pcm_resample_32 (struct pcm_resample_state *state, unsigned channels, unsigned src_rate, const int32_t *src_buffer, size_t src_size, unsigned dest_rate, size_t *dest_size_r, GError **error_r)
	Resamples 32 bit PCM data.
static const int32_t *	pcm_resample_24 (struct pcm_resample_state *state, unsigned channels, unsigned src_rate, const int32_t *src_buffer, size_t src_size, unsigned dest_rate, size_t *dest_size_r, GError **error_r)
	Resamples 24 bit PCM data.

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Function Documentation

const int16_t* pcm_resample_16	(	struct pcm_resample_state *	state,
		unsigned	channels,
		unsigned	src_rate,
		const int16_t *	src_buffer,
		size_t	src_size,
		unsigned	dest_rate,
		size_t *	dest_size_r,
		GError **	error_r
	)

Resamples 16 bit PCM data.

Parameters:

state	an initialized pcm_resample_state object
channels	the number of channels
src_rate	the source sample rate
src	the source PCM buffer
src_size	the size of #src in bytes
dest_rate	the requested destination sample rate
dest_size_r	returns the number of bytes of the destination buffer

Returns:

the destination buffer

static const int32_t* pcm_resample_24	(	struct pcm_resample_state *	state,
		unsigned	channels,
		unsigned	src_rate,
		const int32_t *	src_buffer,
		size_t	src_size,
		unsigned	dest_rate,
		size_t *	dest_size_r,
		GError **	error_r
	)		[inline, static]

Resamples 24 bit PCM data.

Parameters:

state	an initialized pcm_resample_state object
channels	the number of channels
src_rate	the source sample rate
src	the source PCM buffer
src_size	the size of #src in bytes
dest_rate	the requested destination sample rate
dest_size_r	returns the number of bytes of the destination buffer

Returns:

the destination buffer

Definition at line 144 of file pcm_resample.h.

const int32_t* pcm_resample_32	(	struct pcm_resample_state *	state,
		unsigned	channels,
		unsigned	src_rate,
		const int32_t *	src_buffer,
		size_t	src_size,
		unsigned	dest_rate,
		size_t *	dest_size_r,
		GError **	error_r
	)

Resamples 32 bit PCM data.

Parameters:

state	an initialized pcm_resample_state object
channels	the number of channels
src_rate	the source sample rate
src	the source PCM buffer
src_size	the size of #src in bytes
dest_rate	the requested destination sample rate
dest_size_r	returns the number of bytes of the destination buffer

Returns:

the destination buffer

void pcm_resample_deinit

(

struct pcm_resample_state *

state

)

Deinitializes a pcm_resample_state object and frees allocated memory.

const float* pcm_resample_float	(	struct pcm_resample_state *	state,
		unsigned	channels,
		unsigned	src_rate,
		const float *	src_buffer,
		size_t	src_size,
		unsigned	dest_rate,
		size_t *	dest_size_r,
		GError **	error_r
	)

Resamples 32 bit float data.

Parameters:

state	an initialized pcm_resample_state object
channels	the number of channels
src_rate	the source sample rate
src	the source PCM buffer
src_size	the size of #src in bytes
dest_rate	the requested destination sample rate
dest_size_r	returns the number of bytes of the destination buffer

Returns:

the destination buffer

bool pcm_resample_global_init

(

GError **

error_r

)

void pcm_resample_init

(

struct pcm_resample_state *

state

)

Initializes a pcm_resample_state object.