volnorm.c File Reference

#include <stdio.h>
#include <math.h>
#include <pthread.h>
#include <xine/xine_internal.h>
#include <xine/xineutils.h>
#include <xine/post.h>
#include "dsp.h"
#include "audio_filters.h"

Data Structures
struct	volnorm_parameters_s
struct	post_plugin_volnorm_s

Macros
#define	NSAMPLES   128
#define	MIN_SAMPLE_SIZE   32000
#define	MUL_INIT   1.0
#define	MUL_MIN   0.1
#define	MUL_MAX   5.0
#define	MID_S16   (SHRT_MAX * 0.25)
#define	MID_FLOAT   (INT_MAX * 0.25)
#define	SIL_S16   (SHRT_MAX * 0.01)
#define	SIL_FLOAT   (INT_MAX * 0.01)
#define	SMOOTH_MUL   0.06
#define	SMOOTH_LASTAVG   0.06
#define	clamp(a, min, max)   (((a)>(max))?(max):(((a)<(min))?(min):(a)))

Typedefs
typedef struct post_plugin_volnorm_s	post_plugin_volnorm_t
typedef struct volnorm_parameters_s	volnorm_parameters_t

Functions
static int	set_parameters (xine_post_t *this_gen, const void *param_gen)
static int	get_parameters (xine_post_t *this_gen, void *param_gen)
static xine_post_api_descr_t *	get_param_descr (void)
static char *	get_help (void)
static int	volnorm_port_open (xine_audio_port_t *port_gen, xine_stream_t *stream, uint32_t bits, uint32_t rate, int mode)
static void	volnorm_port_close (xine_audio_port_t *port_gen, xine_stream_t *stream)
static void	method1_int16 (post_plugin_volnorm_t *this, audio_buffer_t *buf)
static void	method1_float (post_plugin_volnorm_t *this, audio_buffer_t *buf)
static void	method2_int16 (post_plugin_volnorm_t *this, audio_buffer_t *buf)
static void	method2_float (post_plugin_volnorm_t *this, audio_buffer_t *buf)
static void	volnorm_port_put_buffer (xine_audio_port_t *port_gen, audio_buffer_t *buf, xine_stream_t *stream)
static void	volnorm_dispose (post_plugin_t *this_gen)
static post_plugin_t *	volnorm_open_plugin (post_class_t *class_gen, int inputs, xine_audio_port_t **audio_target, xine_video_port_t **video_target)
void *	volnorm_init_plugin (xine_t *xine, const void *data)

Macro Definition Documentation

clamp

#define clamp	(		a,
			min,
			max
	)		(((a)>(max))?(max):(((a)<(min))?(min):(a)))

MID_FLOAT

#define MID_FLOAT   (INT_MAX * 0.25)

MID_S16

#define MID_S16   (SHRT_MAX * 0.25)

MIN_SAMPLE_SIZE

#define MIN_SAMPLE_SIZE   32000

MUL_INIT

#define MUL_INIT   1.0

MUL_MAX

#define MUL_MAX   5.0

MUL_MIN

#define MUL_MIN   0.1

NSAMPLES

#define NSAMPLES   128

SIL_FLOAT

#define SIL_FLOAT   (INT_MAX * 0.01)

SIL_S16

#define SIL_S16   (SHRT_MAX * 0.01)

SMOOTH_LASTAVG

#define SMOOTH_LASTAVG   0.06

SMOOTH_MUL

#define SMOOTH_MUL   0.06

Typedef Documentation

post_plugin_volnorm_t

typedef struct post_plugin_volnorm_s post_plugin_volnorm_t

volnorm_parameters_t

typedef struct volnorm_parameters_s volnorm_parameters_t

Function Documentation

get_help()

static char* get_help ( void  )

static

References _.

Referenced by volnorm_open_plugin().

get_param_descr()

static xine_post_api_descr_t* get_param_descr ( void  )

static

Referenced by volnorm_open_plugin().

get_parameters()

static int get_parameters ( xine_post_t *  this_gen, void *  param_gen  )

static

References volnorm_parameters_s::method.

Referenced by volnorm_open_plugin().

method1_float()

static void method1_float ( post_plugin_volnorm_t *  this, audio_buffer_t *  buf  )

static

References clamp, audio_buffer_s::mem, audio_buffer_s::mem_size, MID_FLOAT, MUL_MAX, MUL_MIN, SIL_FLOAT, SMOOTH_LASTAVG, and SMOOTH_MUL.

Referenced by volnorm_port_put_buffer().

method1_int16()

static void method1_int16 ( post_plugin_volnorm_t *  this, audio_buffer_t *  buf  )

static

References clamp, audio_buffer_s::mem, audio_buffer_s::mem_size, MID_S16, MUL_MAX, MUL_MIN, SIL_S16, SMOOTH_LASTAVG, and SMOOTH_MUL.

Referenced by volnorm_port_put_buffer().

method2_float()

static void method2_float ( post_plugin_volnorm_t *  this, audio_buffer_t *  buf  )

static

References avg, clamp, audio_buffer_s::mem, audio_buffer_s::mem_size, MID_FLOAT, MIN_SAMPLE_SIZE, MUL_MAX, MUL_MIN, NSAMPLES, and SIL_FLOAT.

Referenced by volnorm_port_put_buffer().

method2_int16()

static void method2_int16 ( post_plugin_volnorm_t *  this, audio_buffer_t *  buf  )

static

References avg, clamp, audio_buffer_s::mem, audio_buffer_s::mem_size, MID_S16, MIN_SAMPLE_SIZE, MUL_MAX, MUL_MIN, NSAMPLES, and SIL_S16.

Referenced by volnorm_port_put_buffer().

set_parameters()

static int set_parameters ( xine_post_t *  this_gen, const void *  param_gen  )

static

References volnorm_parameters_s::method.

Referenced by volnorm_open_plugin().

volnorm_dispose()

static void volnorm_dispose ( post_plugin_t *  this_gen )

static

References _x_post_dispose().

Referenced by volnorm_open_plugin().

volnorm_init_plugin()

void* volnorm_init_plugin	(	xine_t *	xine,
		const void *	data
	)

References N_, NULL, post_class_s::open_plugin, and volnorm_open_plugin().

volnorm_open_plugin()

static post_plugin_t* volnorm_open_plugin ( post_class_t *  class_gen, int  inputs, xine_audio_port_t **  audio_target, xine_video_port_t **  video_target  )

static

References _x_post_init(), _x_post_intercept_audio_port(), xine_audio_port_s::close, get_help(), get_param_descr(), get_parameters(), input(), MID_S16, MUL_INIT, xine_post_in_s::name, post_audio_port_s::new_port, NULL, xine_audio_port_s::open, xine_audio_port_s::put_buffer, set_parameters(), xine_post_api_t::set_parameters, volnorm_dispose(), volnorm_port_close(), volnorm_port_open(), volnorm_port_put_buffer(), xine_list_push_back(), and XINE_POST_DATA_PARAMETERS.

Referenced by volnorm_init_plugin().

volnorm_port_close()

static void volnorm_port_close ( xine_audio_port_t *  port_gen, xine_stream_t *  stream  )

static

References _x_post_dec_usage, xine_audio_port_s::close, NULL, post_audio_port_s::original_port, and post_audio_port_s::stream.

Referenced by volnorm_open_plugin().

volnorm_port_open()

static int volnorm_port_open ( xine_audio_port_t *  port_gen, xine_stream_t *  stream, uint32_t  bits, uint32_t  rate, int  mode  )

static

References _x_post_inc_usage, _x_post_rewire(), bits, post_audio_port_s::bits, mode(), post_audio_port_s::mode, xine_audio_port_s::open, post_audio_port_s::original_port, post_audio_port_s::post, post_audio_port_s::rate, and post_audio_port_s::stream.

Referenced by volnorm_open_plugin().

volnorm_port_put_buffer()

static void volnorm_port_put_buffer ( xine_audio_port_t *  port_gen, audio_buffer_t *  buf, xine_stream_t *  stream  )

static

References ao_format_s::bits, audio_buffer_s::format, method1_float(), method1_int16(), method2_float(), method2_int16(), post_audio_port_s::original_port, post_audio_port_s::post, and xine_audio_port_s::put_buffer.

Referenced by volnorm_open_plugin().