af_hdcd.c File Reference

#include "libavutil/opt.h"
#include "libavutil/avassert.h"
#include "avfilter.h"
#include "internal.h"
#include "audio.h"

Go to the source code of this file.

Data Structures
struct	hdcd_state_t
struct	HDCDContext

Macros
#define	APPLY_GAIN(s, g)   do{int64_t s64 = s; s64 *= gaintab[g]; s = (int32_t)(s64 >> 23); }while(0);

Functions
	AVFILTER_DEFINE_CLASS (hdcd)
static void	hdcd_reset (hdcd_state_t *state, unsigned rate)
static int	integrate (hdcd_state_t *state, int *flag, const int32_t *samples, int count, int stride)
static int	hdcd_scan (hdcd_state_t *state, const int32_t *samples, int max, int stride)
static int	hdcd_envelope (int32_t *samples, int count, int stride, int gain, int target_gain, int extend)
static void	hdcd_process (hdcd_state_t *state, int32_t *samples, int count, int stride)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static int	query_formats (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static av_cold int	init (AVFilterContext *ctx)

Variables
static const uint32_t	peaktab []
static const uint8_t	readaheadtab []
static const int32_t	gaintab []
static const AVOption	hdcd_options []
static const AVFilterPad	avfilter_af_hdcd_inputs []
static const AVFilterPad	avfilter_af_hdcd_outputs []
AVFilter	ff_af_hdcd

Macro Definition Documentation

#define APPLY_GAIN	(		s,
			g
	)		do{int64_t s64 = s; s64 *= gaintab[g]; s = (int32_t)(s64 >> 23); }while(0);

Definition at line 839 of file af_hdcd.c.

Referenced by hdcd_envelope().

Function Documentation

AVFILTER_DEFINE_CLASS

(

hdcd

)

static void hdcd_reset ( hdcd_state_t *  state, unsigned  rate  )

static

Definition at line 841 of file af_hdcd.c.

Referenced by init().

static int integrate ( hdcd_state_t *  state, int *  flag, const int32_t *  samples, int  count, int  stride  )

static

Definition at line 858 of file af_hdcd.c.

Referenced by hdcd_scan().

static int hdcd_scan ( hdcd_state_t *  state, const int32_t *  samples, int  max, int  stride  )

static

Definition at line 903 of file af_hdcd.c.

Referenced by hdcd_process().

static int hdcd_envelope ( int32_t *  samples, int  count, int  stride, int  gain, int  target_gain, int  extend  )

static

Definition at line 927 of file af_hdcd.c.

Referenced by hdcd_process().

static void hdcd_process ( hdcd_state_t *  state, int32_t *  samples, int  count, int  stride  )

static

Definition at line 985 of file af_hdcd.c.

Referenced by filter_frame().

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 1018 of file af_hdcd.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 1051 of file af_hdcd.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 1097 of file af_hdcd.c.

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 1109 of file af_hdcd.c.

Variable Documentation

const uint32_t peaktab[]

static

Definition at line 45 of file af_hdcd.c.

Referenced by hdcd_envelope().

const uint8_t readaheadtab[]

static

Initial value:

= {
    0x03, 0x02, 0x01, 0x01, 0x1f, 0x1e, 0x1f, 0x11, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f,
    0x10, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1c, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e,
    0x1f, 0x0f, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1c, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f,
    0x1e, 0x1f, 0x1b, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1c, 0x1f, 0x1e, 0x1f, 0x1d,
    0x1f, 0x1e, 0x0e, 0x19, 0x07, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1c, 0x1f, 0x1e, 0x1f,
    0x1d, 0x1f, 0x1e, 0x1f, 0x1b, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1c, 0x1f, 0x1e,
    0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1a, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1c, 0x1f,
    0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1b, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1c,
    0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x0d, 0x18, 0x20, 0x06, 0x1e, 0x1f, 0x12, 0x1f, 0x1e, 0x1f,
    0x1c, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1b, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e,
    0x1f, 0x1c, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1a, 0x08, 0x1e, 0x1f, 0x1d, 0x1f,
    0x1e, 0x1f, 0x1c, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1b, 0x1f, 0x1e, 0x1f, 0x1d,
    0x1f, 0x1e, 0x1f, 0x1c, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x19, 0x1f, 0x13, 0x1f,
    0x1d, 0x1f, 0x1e, 0x1f, 0x1c, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1b, 0x09, 0x1e,
    0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1c, 0x1f, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1a, 0x14,
    0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1c, 0x0a, 0x1e, 0x1f, 0x1d, 0x1f, 0x1e, 0x1f, 0x1b,
    0x15, 0x1e, 0x1f, 0x1d, 0x0b, 0x1e, 0x1f, 0x1c, 0x16, 0x1e, 0x0c, 0x1d, 0x17, 0x1e, 0x1f,
    0x20
}

Definition at line 664 of file af_hdcd.c.

Referenced by integrate().

const int32_t gaintab[]

static

Definition at line 686 of file af_hdcd.c.

const AVOption hdcd_options[]

static

Initial value:

= {
     {NULL}
}

Definition at line 833 of file af_hdcd.c.

const AVFilterPad avfilter_af_hdcd_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .filter_frame = filter_frame,
    },
    { NULL }
}

Definition at line 1122 of file af_hdcd.c.

const AVFilterPad avfilter_af_hdcd_outputs[]

static

Initial value:

= {
    {
        .name = "default",
        .type = AVMEDIA_TYPE_AUDIO,
    },
    { NULL }
}

Definition at line 1131 of file af_hdcd.c.

AVFilter ff_af_hdcd

Initial value:

= {
    .name          = "hdcd",
    .description   = NULL_IF_CONFIG_SMALL("Apply high definition audio cd decoding."),
    .priv_size     = sizeof(HDCDContext),
    .priv_class    = &hdcd_class,
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = avfilter_af_hdcd_inputs,
    .outputs       = avfilter_af_hdcd_outputs,
}

Definition at line 1139 of file af_hdcd.c.