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af_center: use option parser

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This commit is contained in:
wm4 2013-12-04 21:14:30 +01:00
parent a27114bb4b
commit 0205f3d214
1 changed files with 8 additions and 27 deletions
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35
audio/filter/af_center.c
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@ -41,7 +41,7 @@ typedef struct af_center_s
// Initialization and runtime control
static int control(struct af_instance* af, int cmd, void* arg)
{
af_center_t* s = af->setup;
af_center_t* s = af->priv;
switch(cmd){
case AF_CONTROL_REINIT:{
@ -54,32 +54,15 @@ static int control(struct af_instance* af, int cmd, void* arg)
return af_test_output(af,(struct mp_audio*)arg);
}
case AF_CONTROL_COMMAND_LINE:{
int ch=1;
sscanf(arg,"%i", &ch);
if((ch >= AF_NCH) || (ch < 0)){
mp_msg(MSGT_AFILTER, MSGL_ERR, "[sub] Center channel number must be between "
" 0 and %i current value is %i\n", AF_NCH-1, ch);
return AF_ERROR;
}
s->ch = ch;
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_center_t* s = af->setup; // Setup for this instance
af_center_t* s = af->priv; // Setup for this instance
float* a = c->planes[0]; // Audio data
int nch = c->nch; // Number of channels
int len = c->samples*c->nch; // Number of samples in current audio block
@ -97,22 +80,20 @@ 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_center_t* s;
af->control=control;
af->uninit=uninit;
af->play=play;
af->setup=s=calloc(1,sizeof(af_center_t));
if(af->setup == NULL)
return AF_ERROR;
// Set default values
s->ch = 1; // Channel nr 2
return AF_OK;
}
// Description of this filter
#define OPT_BASE_STRUCT af_center_t
struct af_info af_info_center = {
.info = "Audio filter for adding a center channel",
.name = "center",
.flags = AF_FLAGS_NOT_REENTRANT,
.open = af_open,
.priv_size = sizeof(af_center_t),
.options = (const struct m_option[]) {
OPT_INTRANGE("channel", ch, 0, 0, AF_NCH - 1, OPTDEF_INT(1)),
{0}
},
};