swresample_internal.h File Reference

#include "swresample.h"
#include "libavutil/channel_layout.h"
#include "config.h"

Go to the source code of this file.

Data Structures
struct	AudioData
struct	DitherContext
struct	Resampler
struct	SwrContext
	The libswresample context. More...

Macros
#define	SWR_CH_MAX   64
#define	SQRT1_3   0.57735026918962576451 /* sqrt(1/3) */
#define	SQRT2_3   0.81649658092772603273 /* sqrt(2/3) */
#define	SQRT3_2   1.22474487139158904909 /* sqrt(3/2) */
#define	NS_TAPS   20

Typedefs
typedef int	integer
typedef void	mix_1_1_func_type(void *out, const void *in, const void *coeffp, integer index, integer len)
typedef void	mix_2_1_func_type(void *out, const void *in1, const void *in2, const void *coeffp, integer index1, integer index2, integer len)
typedef void	mix_any_func_type(uint8_t *const *out, const uint8_t *const *in1, const void *coeffp, integer len)
typedef void(*	resample_free_func) (struct ResampleContext **c)
typedef int(*	multiple_resample_func) (struct ResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed)
typedef int(*	resample_flush_func) (struct SwrContext *c)
typedef int(*	set_compensation_func) (struct ResampleContext *c, int sample_delta, int compensation_distance)
typedef int64_t(*	get_delay_func) (struct SwrContext *s, int64_t base)
typedef int(*	invert_initial_buffer_func) (struct ResampleContext *c, AudioData *dst, const AudioData *src, int src_size, int *dst_idx, int *dst_count)
typedef int64_t(*	get_out_samples_func) (struct SwrContext *s, int in_samples)

Functions
av_warn_unused_result int	swri_realloc_audio (AudioData *a, int count)
int	swri_check_chlayout (struct SwrContext *s, const AVChannelLayout *chl, const char *name)
void	swri_noise_shaping_int16 (SwrContext *s, AudioData *dsts, const AudioData *srcs, const AudioData *noises, int count)
void	swri_noise_shaping_int32 (SwrContext *s, AudioData *dsts, const AudioData *srcs, const AudioData *noises, int count)
void	swri_noise_shaping_float (SwrContext *s, AudioData *dsts, const AudioData *srcs, const AudioData *noises, int count)
void	swri_noise_shaping_double (SwrContext *s, AudioData *dsts, const AudioData *srcs, const AudioData *noises, int count)
av_warn_unused_result int	swri_rematrix_init (SwrContext *s)
void	swri_rematrix_free (SwrContext *s)
int	swri_rematrix (SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy)
int	swri_rematrix_init_x86 (struct SwrContext *s)
av_warn_unused_result int	swri_get_dither (SwrContext *s, void *dst, int len, unsigned seed, enum AVSampleFormat noise_fmt)
av_warn_unused_result int	swri_dither_init (SwrContext *s, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt)
void	swri_audio_convert_init_aarch64 (struct AudioConvert *ac, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels)
void	swri_audio_convert_init_arm (struct AudioConvert *ac, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels)
void	swri_audio_convert_init_x86 (struct AudioConvert *ac, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels)

Variables
struct Resampler const	swri_resampler
struct Resampler const	swri_soxr_resampler

Macro Definition Documentation

SWR_CH_MAX

#define SWR_CH_MAX   64

Definition at line 28 of file swresample_internal.h.

SQRT1_3

#define SQRT1_3   0.57735026918962576451 /* sqrt(1/3) */

Definition at line 30 of file swresample_internal.h.

Referenced by build_matrix().

SQRT2_3

#define SQRT2_3   0.81649658092772603273 /* sqrt(2/3) */

Definition at line 31 of file swresample_internal.h.

Referenced by build_matrix().

SQRT3_2

#define SQRT3_2   1.22474487139158904909 /* sqrt(3/2) */

Definition at line 32 of file swresample_internal.h.

Referenced by build_matrix().

NS_TAPS

#define NS_TAPS   20

Definition at line 34 of file swresample_internal.h.

Typedef Documentation

integer

typedef int integer

Definition at line 39 of file swresample_internal.h.

mix_1_1_func_type

typedef void mix_1_1_func_type(void *out, const void *in, const void *coeffp, integer index, integer len)

Definition at line 42 of file swresample_internal.h.

mix_2_1_func_type

typedef void mix_2_1_func_type(void *out, const void *in1, const void *in2, const void *coeffp, integer index1, integer index2, integer len)

Definition at line 43 of file swresample_internal.h.

mix_any_func_type

typedef void mix_any_func_type(uint8_t *const *out, const uint8_t *const *in1, const void *coeffp, integer len)

Definition at line 45 of file swresample_internal.h.

resample_free_func

typedef void(* resample_free_func) (struct ResampleContext **c)

Definition at line 75 of file swresample_internal.h.

multiple_resample_func

typedef int(* multiple_resample_func) (struct ResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed)

Definition at line 76 of file swresample_internal.h.

resample_flush_func

typedef int(* resample_flush_func) (struct SwrContext *c)

Definition at line 77 of file swresample_internal.h.

set_compensation_func

typedef int(* set_compensation_func) (struct ResampleContext *c, int sample_delta, int compensation_distance)

Definition at line 78 of file swresample_internal.h.

get_delay_func

typedef int64_t(* get_delay_func) (struct SwrContext *s, int64_t base)

Definition at line 79 of file swresample_internal.h.

invert_initial_buffer_func

typedef int(* invert_initial_buffer_func) (struct ResampleContext *c, AudioData *dst, const AudioData *src, int src_size, int *dst_idx, int *dst_count)

Definition at line 80 of file swresample_internal.h.

get_out_samples_func

typedef int64_t(* get_out_samples_func) (struct SwrContext *s, int in_samples)

Definition at line 81 of file swresample_internal.h.

Function Documentation

swri_realloc_audio()

av_warn_unused_result int swri_realloc_audio	(	AudioData *	a,
		int	count )

Definition at line 408 of file swresample.c.

Referenced by invert_initial_buffer(), resample(), resample_flush(), swr_convert(), swr_convert_internal(), and swr_inject_silence().

swri_check_chlayout()

int swri_check_chlayout	(	struct SwrContext *	s,
		const AVChannelLayout *	chl,
		const char *	name )

Definition at line 33 of file swresample.c.

Referenced by swr_alloc_set_opts2(), swr_init(), and swr_set_matrix().

swri_noise_shaping_int16()

void swri_noise_shaping_int16	(	SwrContext *	s,
		AudioData *	dsts,
		const AudioData *	srcs,
		const AudioData *	noises,
		int	count )

Referenced by swr_convert_internal().

swri_noise_shaping_int32()

void swri_noise_shaping_int32	(	SwrContext *	s,
		AudioData *	dsts,
		const AudioData *	srcs,
		const AudioData *	noises,
		int	count )

Referenced by swr_convert_internal().

swri_noise_shaping_float()

void swri_noise_shaping_float	(	SwrContext *	s,
		AudioData *	dsts,
		const AudioData *	srcs,
		const AudioData *	noises,
		int	count )

Referenced by swr_convert_internal().

swri_noise_shaping_double()

void swri_noise_shaping_double	(	SwrContext *	s,
		AudioData *	dsts,
		const AudioData *	srcs,
		const AudioData *	noises,
		int	count )

Referenced by swr_convert_internal().

swri_rematrix_init()

av_warn_unused_result int swri_rematrix_init

(

SwrContext *

s

)

Definition at line 673 of file rematrix.c.

Referenced by swr_init().

swri_rematrix_free()

void swri_rematrix_free

(

SwrContext *

s

)

Definition at line 795 of file rematrix.c.

Referenced by clear_context().

swri_rematrix()

int swri_rematrix	(	SwrContext *	s,
		AudioData *	out,
		AudioData *	in,
		int	len,
		int	mustcopy )

Definition at line 800 of file rematrix.c.

Referenced by swr_convert_internal().

swri_rematrix_init_x86()

int swri_rematrix_init_x86

(

struct SwrContext *

s

)

Referenced by swri_rematrix_init().

swri_get_dither()

av_warn_unused_result int swri_get_dither	(	SwrContext *	s,
		void *	dst,
		int	len,
		unsigned	seed,
		enum AVSampleFormat	noise_fmt )

Definition at line 27 of file dither.c.

Referenced by swr_convert_internal().

swri_dither_init()

av_warn_unused_result int swri_dither_init	(	SwrContext *	s,
		enum AVSampleFormat	out_fmt,
		enum AVSampleFormat	in_fmt )

Definition at line 80 of file dither.c.

Referenced by swr_init().

swri_audio_convert_init_aarch64()

void swri_audio_convert_init_aarch64	(	struct AudioConvert *	ac,
		enum AVSampleFormat	out_fmt,
		enum AVSampleFormat	in_fmt,
		int	channels )

Definition at line 48 of file audio_convert_init.c.

swri_audio_convert_init_arm()

void swri_audio_convert_init_arm	(	struct AudioConvert *	ac,
		enum AVSampleFormat	out_fmt,
		enum AVSampleFormat	in_fmt,
		int	channels )

Definition at line 48 of file audio_convert_init.c.

swri_audio_convert_init_x86()

void swri_audio_convert_init_x86	(	struct AudioConvert *	ac,
		enum AVSampleFormat	out_fmt,
		enum AVSampleFormat	in_fmt,
		int	channels )

Definition at line 37 of file audio_convert_init.c.

Referenced by swri_audio_convert_init_x86().

Variable Documentation

swri_resampler

struct Resampler const swri_resampler

extern

Definition at line 504 of file resample.c.

Referenced by swr_init().

swri_soxr_resampler

struct Resampler const swri_soxr_resampler

extern

Definition at line 126 of file soxr_resample.c.

Referenced by swr_init().