libswresample/rematrix.c File Reference

#include "swresample_internal.h"
#include "libavutil/audioconvert.h"
#include "libavutil/avassert.h"
#include "rematrix_template.c"

Go to the source code of this file.

Defines
#define	ONE   (1.0)
#define	R(x)   x
#define	SAMPLE   float
#define	COEFF   float
#define	RENAME(x)   x ## _float
#define	ONE   (1.0)
#define	R(x)   x
#define	SAMPLE   double
#define	COEFF   double
#define	RENAME(x)   x ## _double
#define	ONE   (-32768)
#define	R(x)   (((x) + 16384)>>15)
#define	SAMPLE   int16_t
#define	COEFF   int
#define	RENAME(x)   x ## _s16
#define	FRONT_LEFT   0
#define	FRONT_RIGHT   1
#define	FRONT_CENTER   2
#define	LOW_FREQUENCY   3
#define	BACK_LEFT   4
#define	BACK_RIGHT   5
#define	FRONT_LEFT_OF_CENTER   6
#define	FRONT_RIGHT_OF_CENTER   7
#define	BACK_CENTER   8
#define	SIDE_LEFT   9
#define	SIDE_RIGHT   10
#define	TOP_CENTER   11
#define	TOP_FRONT_LEFT   12
#define	TOP_FRONT_CENTER   13
#define	TOP_FRONT_RIGHT   14
#define	TOP_BACK_LEFT   15
#define	TOP_BACK_CENTER   16
#define	TOP_BACK_RIGHT   17
Functions
int	swr_set_matrix (struct SwrContext *s, const double *matrix, int stride)
	Set a customized remix matrix.
static int	even (int64_t layout)
static int	sane_layout (int64_t layout)
static int	auto_matrix (SwrContext *s)
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)

---

Define Documentation

#define BACK_CENTER   8

Definition at line 65 of file rematrix.c.

#define BACK_LEFT   4

Definition at line 61 of file rematrix.c.

#define BACK_RIGHT   5

Definition at line 62 of file rematrix.c.

#define COEFF   int

Definition at line 52 of file rematrix.c.

#define COEFF   double

Definition at line 52 of file rematrix.c.

#define COEFF   float

Definition at line 52 of file rematrix.c.

Referenced by copy_TMPL(), and sum2_TMPL().

#define FRONT_CENTER   2

Definition at line 59 of file rematrix.c.

#define FRONT_LEFT   0

Definition at line 57 of file rematrix.c.

#define FRONT_LEFT_OF_CENTER   6

Definition at line 63 of file rematrix.c.

#define FRONT_RIGHT   1

Definition at line 58 of file rematrix.c.

#define FRONT_RIGHT_OF_CENTER   7

Definition at line 64 of file rematrix.c.

#define LOW_FREQUENCY   3

Definition at line 60 of file rematrix.c.

#define ONE   (-32768)

Definition at line 49 of file rematrix.c.

#define ONE   (1.0)

Definition at line 49 of file rematrix.c.

#define ONE   (1.0)

Definition at line 49 of file rematrix.c.

#define R

(

x

)

(((x) + 16384)>>15)

Definition at line 50 of file rematrix.c.

#define R

(

x

)

x

Definition at line 50 of file rematrix.c.

#define R

(

x

)

x

Definition at line 50 of file rematrix.c.

#define RENAME

(

x

)

x ## _s16

Definition at line 53 of file rematrix.c.

#define RENAME

(

x

)

x ## _double

Definition at line 53 of file rematrix.c.

#define RENAME

(

x

)

x ## _float

Definition at line 53 of file rematrix.c.

#define SAMPLE   int16_t

Definition at line 51 of file rematrix.c.

#define SAMPLE   double

Definition at line 51 of file rematrix.c.

#define SAMPLE   float

Definition at line 51 of file rematrix.c.

#define SIDE_LEFT   9

Definition at line 66 of file rematrix.c.

#define SIDE_RIGHT   10

Definition at line 67 of file rematrix.c.

#define TOP_BACK_CENTER   16

Definition at line 73 of file rematrix.c.

#define TOP_BACK_LEFT   15

Definition at line 72 of file rematrix.c.

#define TOP_BACK_RIGHT   17

Definition at line 74 of file rematrix.c.

#define TOP_CENTER   11

Definition at line 68 of file rematrix.c.

#define TOP_FRONT_CENTER   13

Definition at line 70 of file rematrix.c.

#define TOP_FRONT_LEFT   12

Definition at line 69 of file rematrix.c.

#define TOP_FRONT_RIGHT   14

Definition at line 71 of file rematrix.c.

---

Function Documentation

static int auto_matrix

(

SwrContext *

s

)

[static]

Definition at line 117 of file rematrix.c.

Referenced by swri_rematrix_init().

static int even

(

int64_t

layout

)

[static]

Definition at line 94 of file rematrix.c.

static int sane_layout

(

int64_t

layout

)

[static]

Definition at line 100 of file rematrix.c.

int swr_set_matrix	(	struct SwrContext *	s,
		const double *	matrix,
		int	stride
	)

Set a customized remix matrix.

Parameters:

	s	allocated Swr context, not yet initialized
	matrix	remix coefficients; matrix[i + stride * o] is the weight of input channel i in output channel o
	stride	offset between lines of the matrix

Returns:

AVERROR error code in case of failure.

Definition at line 76 of file rematrix.c.

Referenced by config_props().

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

Definition at line 341 of file rematrix.c.

Referenced by swr_convert_internal().

void swri_rematrix_free

(

SwrContext *

s

)

Definition at line 336 of file rematrix.c.

Referenced by swr_free(), and swr_init().

int swri_rematrix_init

(

SwrContext *

s

)

Definition at line 284 of file rematrix.c.

Referenced by swr_init().