libavfilter/af_aconvert.c File Reference

sample format and channel layout conversion audio filter based on code in libavcodec/resample.c by Fabrice Bellard and libavcodec/audioconvert.c by Michael Niedermayer More...

#include "libavutil/audioconvert.h"
#include "libavutil/avstring.h"
#include "libavcodec/audioconvert.h"
#include "avfilter.h"
#include "internal.h"
#include "af_aconvert_rematrix.c"

Go to the source code of this file.

Data Structures
struct	AConvertContext
struct	RematrixFunctionInfo
Defines
#define	REMATRIX_FUNC_SIG(NAME)
#define	FMT_TYPE   uint8_t
#define	REMATRIX_FUNC_NAME(NAME)   NAME ## _u8
#define	FMT_TYPE   int16_t
#define	REMATRIX_FUNC_NAME(NAME)   NAME ## _s16
#define	FMT_TYPE   int32_t
#define	REMATRIX_FUNC_NAME(NAME)   NAME ## _s32
#define	FLOATING
#define	FMT_TYPE   float
#define	REMATRIX_FUNC_NAME(NAME)   NAME ## _flt
#define	FMT_TYPE   double
#define	REMATRIX_FUNC_NAME(NAME)   NAME ## _dbl
#define	FMT_TYPE   uint8_t
#define	REMATRIX_FUNC_NAME(NAME)   NAME
#define	REGISTER_FUNC_PACKING(INCHLAYOUT, OUTCHLAYOUT, FUNC, PACKING)
#define	REGISTER_FUNC(INCHLAYOUT, OUTCHLAYOUT, FUNC)
Functions
	REMATRIX_FUNC_SIG (stereo_remix_planar)
static av_cold int	init (AVFilterContext *ctx, const char *args0, void *opaque)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_output (AVFilterLink *outlink)
static int	init_buffers (AVFilterLink *inlink, int nb_samples)
static void	filter_samples (AVFilterLink *inlink, AVFilterBufferRef *insamplesref)
Variables
static struct RematrixFunctionInfo	rematrix_funcs []
AVFilter	avfilter_af_aconvert

---

Detailed Description

sample format and channel layout conversion audio filter based on code in libavcodec/resample.c by Fabrice Bellard and libavcodec/audioconvert.c by Michael Niedermayer

Definition in file af_aconvert.c.

---

Define Documentation

#define FLOATING

Definition at line 71 of file af_aconvert.c.

#define FMT_TYPE   uint8_t

Definition at line 81 of file af_aconvert.c.

#define FMT_TYPE   double

Definition at line 81 of file af_aconvert.c.

#define FMT_TYPE   float

Definition at line 81 of file af_aconvert.c.

#define FMT_TYPE   int32_t

Definition at line 81 of file af_aconvert.c.

#define FMT_TYPE   int16_t

Definition at line 81 of file af_aconvert.c.

#define FMT_TYPE   uint8_t

Definition at line 81 of file af_aconvert.c.

Referenced by REMATRIX_FUNC_SIG().

#define REGISTER_FUNC	(	INCHLAYOUT,
		OUTCHLAYOUT,
		FUNC		)

Value:

REGISTER_FUNC_PACKING(INCHLAYOUT, OUTCHLAYOUT, FUNC##_packed, AVFILTER_PACKED)  \
    REGISTER_FUNC_PACKING(INCHLAYOUT, OUTCHLAYOUT, FUNC##_planar, AVFILTER_PLANAR)

Definition at line 98 of file af_aconvert.c.

#define REGISTER_FUNC_PACKING	(	INCHLAYOUT,
		OUTCHLAYOUT,
		FUNC,
		PACKING		)

Value:

{INCHLAYOUT, OUTCHLAYOUT, PACKING, AV_SAMPLE_FMT_U8,  FUNC##_u8},   \
    {INCHLAYOUT, OUTCHLAYOUT, PACKING, AV_SAMPLE_FMT_S16, FUNC##_s16},  \
    {INCHLAYOUT, OUTCHLAYOUT, PACKING, AV_SAMPLE_FMT_S32, FUNC##_s32},  \
    {INCHLAYOUT, OUTCHLAYOUT, PACKING, AV_SAMPLE_FMT_FLT, FUNC##_flt},  \
    {INCHLAYOUT, OUTCHLAYOUT, PACKING, AV_SAMPLE_FMT_DBL, FUNC##_dbl},

Definition at line 91 of file af_aconvert.c.

#define REMATRIX_FUNC_NAME

(

NAME

)

NAME

Definition at line 82 of file af_aconvert.c.

#define REMATRIX_FUNC_NAME

(

NAME

)

NAME ## _dbl

Definition at line 82 of file af_aconvert.c.

#define REMATRIX_FUNC_NAME

(

NAME

)

NAME ## _flt

Definition at line 82 of file af_aconvert.c.

#define REMATRIX_FUNC_NAME

(

NAME

)

NAME ## _s32

Definition at line 82 of file af_aconvert.c.

#define REMATRIX_FUNC_NAME

(

NAME

)

NAME ## _s16

Definition at line 82 of file af_aconvert.c.

#define REMATRIX_FUNC_NAME

(

NAME

)

NAME ## _u8

Definition at line 82 of file af_aconvert.c.

#define REMATRIX_FUNC_SIG

(

NAME

)

Value:

static void REMATRIX_FUNC_NAME(NAME) \
    (FMT_TYPE *outp[], FMT_TYPE *inp[], int nb_samples, AConvertContext *aconvert)

Definition at line 56 of file af_aconvert.c.

---

Function Documentation

static int config_output

(

AVFilterLink *

outlink

)

[static]

Definition at line 196 of file af_aconvert.c.

static void filter_samples	(	AVFilterLink *	inlink,
		AVFilterBufferRef *	insamplesref
	)			[static]

Definition at line 340 of file af_aconvert.c.

static av_cold int init	(	AVFilterContext *	ctx,
		const char *	args0,
		void *	opaque
	)			[static]

Definition at line 118 of file af_aconvert.c.

static int init_buffers	(	AVFilterLink *	inlink,
		int	nb_samples
	)			[static]

Definition at line 252 of file af_aconvert.c.

Referenced by filter_samples().

static int query_formats

(

AVFilterContext *

ctx

)

[static]

Definition at line 156 of file af_aconvert.c.

Referenced by ff_avfilter_graph_config_formats().

REMATRIX_FUNC_SIG

(

stereo_remix_planar

)

Definition at line 83 of file af_aconvert.c.

static av_cold void uninit

(

AVFilterContext *

ctx

)

[static]

Definition at line 147 of file af_aconvert.c.

---

Variable Documentation

AVFilter avfilter_af_aconvert

Initial value:

 {
    .name          = "aconvert",
    .description   = NULL_IF_CONFIG_SMALL("Convert the input audio to sample_fmt:channel_layout:packed_fmt."),
    .priv_size     = sizeof(AConvertContext),
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,

    .inputs    = (const AVFilterPad[]) {{ .name      = "default",
                                    .type            = AVMEDIA_TYPE_AUDIO,
                                    .filter_samples  = filter_samples,
                                    .min_perms       = AV_PERM_READ, },
                                  { .name = NULL}},
    .outputs   = (const AVFilterPad[]) {{ .name      = "default",
                                    .type            = AVMEDIA_TYPE_AUDIO,
                                    .config_props    = config_output, },
                                  { .name = NULL}},
}

Definition at line 401 of file af_aconvert.c.

struct RematrixFunctionInfo rematrix_funcs[] [static]

Referenced by config_output().