audio.c File Reference

#include <glib.h>
#include <stdint.h>
#include "audio.h"
#include "config.h"

Go to the source code of this file.

Macros
#define	FROM_INT_LOOP(NAME, TYPE, SWAP, OFFSET, RANGE)
#define	TO_INT_LOOP(NAME, TYPE, SWAP, OFFSET, RANGE)

Typedefs
typedef void(*	FromFunc )(const void *in, float *out, int samples)
typedef void(*	ToFunc )(const float *in, void *out, int samples)

Functions
static int8_t	NOOP8 (int8_t i)
static int16_t	NOOP16 (int16_t i)
static int32_t	NOOP32 (int32_t i)
static int16_t	SWAP16 (int16_t i)
static int32_t	SWAP32 (int32_t i)
EXPORT void	audio_from_int (const void *in, int format, float *out, int samples)
EXPORT void	audio_to_int (const float *in, void *out, int format, int samples)
EXPORT void	audio_amplify (float *data, int channels, int frames, float *factors)

Variables
struct {
int   format
FromFunc   from
ToFunc   to
}	convert_table []

---

Macro Definition Documentation

#define FROM_INT_LOOP	(		NAME,
			TYPE,
			SWAP,
			OFFSET,
			RANGE
	)

Value:

static void NAME (const TYPE * in, float * out, int samples) \
{ \
    const TYPE * end = in + samples; \
    while (in < end) \
        * out ++ = (TYPE) (SWAP (* in ++) - OFFSET) / (double) RANGE; \
}

Definition at line 26 of file audio.c.

#define TO_INT_LOOP	(		NAME,
			TYPE,
			SWAP,
			OFFSET,
			RANGE
	)

Value:

static void NAME (const float * in, TYPE * out, int samples) \
{ \
    const float * end = in + samples; \
    while (in < end) \
    { \
        double f = * in ++; \
        * out ++ = SWAP (OFFSET + (TYPE) (CLAMP (f, -1, 1) * (double) RANGE)); \
    } \
}

Definition at line 34 of file audio.c.

---

Typedef Documentation

typedef void(* FromFunc)(const void *in, float *out, int samples)

Definition at line 84 of file audio.c.

typedef void(* ToFunc)(const float *in, void *out, int samples)

Definition at line 85 of file audio.c.

---

Function Documentation

EXPORT void audio_amplify	(	float *	data,
		int	channels,
		int	frames,
		float *	factors
	)

Definition at line 157 of file audio.c.

Referenced by apply_replay_gain(), and apply_software_volume().

EXPORT void audio_from_int	(	const void *	in,
		int	format,
		float *	out,
		int	samples
	)

Definition at line 129 of file audio.c.

Referenced by write_audio().

EXPORT void audio_to_int	(	const float *	in,
		void *	out,
		int	format,
		int	samples
	)

Definition at line 143 of file audio.c.

Referenced by write_processed().

static int16_t NOOP16 ( int16_t  i )

inlinestatic

Definition at line 46 of file audio.c.

static int32_t NOOP32 ( int32_t  i )

inlinestatic

Definition at line 47 of file audio.c.

static int8_t NOOP8 ( int8_t  i )

inlinestatic

Definition at line 45 of file audio.c.

static int16_t SWAP16 ( int16_t  i )

inlinestatic

Definition at line 67 of file audio.c.

static int32_t SWAP32 ( int32_t  i )

inlinestatic

Definition at line 68 of file audio.c.

---

Variable Documentation

struct { ... } convert_table[]

Referenced by audio_from_int(), and audio_to_int().

int format

Definition at line 89 of file audio.c.

Referenced by create_titlestring_widgets(), on_titlestring_entry_changed(), open_audio(), and plugin_registry_load().

FromFunc from

Definition at line 90 of file audio.c.

ToFunc to

Definition at line 91 of file audio.c.