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af_equalizer: use option parser

This commit is contained in:
wm4 2013-12-04 21:14:57 +01:00
parent 349376aa5c
commit 5b7eb713a1
1 changed files with 17 additions and 26 deletions
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43
audio/filter/af_equalizer.c
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@ -68,6 +68,7 @@ typedef struct af_equalizer_s
int K; // Number of used eq bands
int channels; // Number of channels
float gain_factor; // applied at output to avoid clipping
double p[KM];
} af_equalizer_t;
// 2nd order Band-pass Filter design
@ -85,7 +86,7 @@ static void bp2(float* a, float* b, float fc, float q){
// Initialization and runtime control
static int control(struct af_instance* af, int cmd, void* arg)
{
af_equalizer_t* s = (af_equalizer_t*)af->setup;
af_equalizer_t* s = (af_equalizer_t*)af->priv;
switch(cmd){
case AF_CONTROL_REINIT:{
@ -136,34 +137,15 @@ static int control(struct af_instance* af, int cmd, void* arg)
return af_test_output(af,arg);
}
case AF_CONTROL_COMMAND_LINE:{
float g[10]={0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0};
int i,j;
sscanf((char*)arg,"%f:%f:%f:%f:%f:%f:%f:%f:%f:%f", &g[0], &g[1],
&g[2], &g[3], &g[4], &g[5], &g[6], &g[7], &g[8] ,&g[9]);
for(i=0;i<AF_NCH;i++){
for(j=0;j<KM;j++){
((af_equalizer_t*)af->setup)->g[i][j] =
pow(10.0,MPCLAMP(g[j],G_MIN,G_MAX)/20.0)-1.0;
}
}
return AF_OK;
}
}
return AF_UNKNOWN;
}
// Deallocate memory
static void uninit(struct af_instance* af)
{
free(af->setup);
}
// Filter data through filter
static struct mp_audio* play(struct af_instance* af, struct mp_audio* data)
{
struct mp_audio* c = data; // Current working data
af_equalizer_t* s = (af_equalizer_t*)af->setup; // Setup
af_equalizer_t* s = (af_equalizer_t*)af->priv; // Setup
uint32_t ci = af->data->nch; // Index for channels
uint32_t nch = af->data->nch; // Number of channels
@ -201,18 +183,27 @@ static struct mp_audio* play(struct af_instance* af, struct mp_audio* data)
// Allocate memory and set function pointers
static int af_open(struct af_instance* af){
af->control=control;
af->uninit=uninit;
af->play=play;
af->setup=calloc(1,sizeof(af_equalizer_t));
if(af->setup == NULL)
return AF_ERROR;
af_equalizer_t *priv = af->priv;
for(int i=0;i<AF_NCH;i++){
for(int j=0;j<KM;j++){
priv->g[i][j] = pow(10.0,MPCLAMP(priv->p[j],G_MIN,G_MAX)/20.0)-1.0;
}
}
return AF_OK;
}
// Description of this filter
#define OPT_BASE_STRUCT af_equalizer_t
struct af_info af_info_equalizer = {
.info = "Equalizer audio filter",
.name = "equalizer",
.flags = AF_FLAGS_NOT_REENTRANT,
.open = af_open,
.priv_size = sizeof(af_equalizer_t),
.options = (const struct m_option[]) {
#define BAND(n) OPT_DOUBLE("e" #n, p[n], 0)
BAND(0), BAND(1), BAND(2), BAND(3), BAND(4),
BAND(5), BAND(6), BAND(7), BAND(8), BAND(9),
{0}
},
};