// Initialization and runtime control
static int control(struct af_instance_s* af, int cmd, void* arg)
{
af_channels_t* s = af->setup;
switch(cmd){
case AF_CONTROL_REINIT:
// Set default channel assignment
if(!s->router){
int i;
// Make sure this filter isn't redundant
if(af->data->nch == ((af_data_t*)arg)->nch)
return AF_DETACH;
// If mono: fake stereo
if(((af_data_t*)arg)->nch == 1){
s->nr = min(af->data->nch,2);
for(i=0;i<s->nr;i++){
s->route[i][FR] = 0;
s->route[i][TO] = i;
}
}
else{
s->nr = min(af->data->nch, ((af_data_t*)arg)->nch);
for(i=0;i<s->nr;i++){
s->route[i][FR] = i;
s->route[i][TO] = i;
}
}
}
af->data->rate = ((af_data_t*)arg)->rate;
af->data->format = ((af_data_t*)arg)->format;
af->data->bps = ((af_data_t*)arg)->bps;
af->mul.n = af->data->nch;
af->mul.d = ((af_data_t*)arg)->nch;
af_frac_cancel(&af->mul);
return check_routes(s,((af_data_t*)arg)->nch,af->data->nch);
case AF_CONTROL_COMMAND_LINE:{
int nch = 0;
int n = 0;
// Check number of channels and number of routing pairs
sscanf(arg, "%i:%i%n", &nch, &s->nr, &n);
// If router scan commandline for routing pairs
if(s->nr){
char* cp = &((char*)arg)[n];
int ch = 0;
// Sanity check
if((s->nr < 1) || (s->nr > AF_NCH)){
af_msg(AF_MSG_ERROR,"[channels] The number of routing pairs must be"
" between 1 and %i. Current value is %i\n",AF_NCH,s->nr);
}
s->router = 1;
// Scan for pairs on commandline
while((*cp == ':') && (ch < s->nr)){
sscanf(cp, ":%i:%i%n" ,&s->route[ch][FR], &s->route[ch][TO], &n);
af_msg(AF_MSG_VERBOSE,"[channels] Routing from channel %i to"
" channel %i\n",s->route[ch][FR],s->route[ch][TO]);
cp = &cp[n];
ch++;
}
}
if(AF_OK != af->control(af,AF_CONTROL_CHANNELS | AF_CONTROL_SET ,&nch))
return AF_ERROR;
return AF_OK;
}
case AF_CONTROL_CHANNELS | AF_CONTROL_SET:
// Reinit must be called after this function has been called
// Sanity check
if(((int*)arg)[0] <= 0 || ((int*)arg)[0] > AF_NCH){
af_msg(AF_MSG_ERROR,"[channels] The number of output channels must be"
" between 1 and %i. Current value is %i\n",AF_NCH,((int*)arg)[0]);
return AF_ERROR;
}
af->data->nch=((int*)arg)[0];
if(!s->router)
af_msg(AF_MSG_VERBOSE,"[channels] Changing number of channels"
" to %i\n",af->data->nch);
return AF_OK;
case AF_CONTROL_CHANNELS | AF_CONTROL_GET:
*(int*)arg = af->data->nch;
return AF_OK;
case AF_CONTROL_CHANNELS_ROUTING | AF_CONTROL_SET:{
int ch = ((af_control_ext_t*)arg)->ch;
int* route = ((af_control_ext_t*)arg)->arg;
s->route[ch][FR] = route[FR];
s->route[ch][TO] = route[TO];
return AF_OK;
}
case AF_CONTROL_CHANNELS_ROUTING | AF_CONTROL_GET:{
int ch = ((af_control_ext_t*)arg)->ch;
int* route = ((af_control_ext_t*)arg)->arg;
route[FR] = s->route[ch][FR];
route[TO] = s->route[ch][TO];
return AF_OK;
}
case AF_CONTROL_CHANNELS_NR | AF_CONTROL_SET:
s->nr = *(int*)arg;
return AF_OK;
case AF_CONTROL_CHANNELS_NR | AF_CONTROL_GET:
*(int*)arg = s->nr;
return AF_OK;
case AF_CONTROL_CHANNELS_ROUTER | AF_CONTROL_SET:
s->router = *(int*)arg;
return AF_OK;
case AF_CONTROL_CHANNELS_ROUTER | AF_CONTROL_GET:
*(int*)arg = s->router;
return AF_OK;
}
return AF_UNKNOWN;
}
// Initialization and runtime control
static int control(struct af_instance_s* af, int cmd, void* arg)
{
switch(cmd){
case AF_CONTROL_REINIT:{
char buf1[256];
char buf2[256];
af_data_t *data = arg;
// Make sure this filter isn't redundant
if(af->data->format == data->format &&
af->data->bps == data->bps)
return AF_DETACH;
// Check for errors in configuraton
if((AF_OK != check_bps(data->bps)) ||
(AF_OK != check_format(data->format)) ||
(AF_OK != check_bps(af->data->bps)) ||
(AF_OK != check_format(af->data->format)))
return AF_ERROR;
af_msg(AF_MSG_VERBOSE,"[format] Changing sample format from %s to %s\n",
af_fmt2str(data->format,buf1,256),
af_fmt2str(af->data->format,buf2,256));
af->data->rate = data->rate;
af->data->nch = data->nch;
af->mul.n = af->data->bps;
af->mul.d = data->bps;
af_frac_cancel(&af->mul);
af->play = play; // set default
// look whether only endianess differences are there
if ((af->data->format & ~AF_FORMAT_END_MASK) ==
(data->format & ~AF_FORMAT_END_MASK))
{
af_msg(AF_MSG_VERBOSE,"[format] Accelerated endianess conversion only\n");
af->play = play_swapendian;
}
if ((data->format == AF_FORMAT_FLOAT_NE) &&
(af->data->format == AF_FORMAT_S16_NE))
{
af_msg(AF_MSG_VERBOSE,"[format] Accelerated %s to %s conversion\n",
af_fmt2str(data->format,buf1,256),
af_fmt2str(af->data->format,buf2,256));
af->play = play_float_s16;
}
if ((data->format == AF_FORMAT_S16_NE) &&
(af->data->format == AF_FORMAT_FLOAT_NE))
{
af_msg(AF_MSG_VERBOSE,"[format] Accelerated %s to %s conversion\n",
af_fmt2str(data->format,buf1,256),
af_fmt2str(af->data->format,buf2,256));
af->play = play_s16_float;
}
return AF_OK;
}
case AF_CONTROL_COMMAND_LINE:{
int format = af_str2fmt_short(arg);
if (format == -1) {
af_msg(AF_MSG_ERROR, "[format] %s is not a valid format\n", (char *)arg);
return AF_ERROR;
}
if(AF_OK != af->control(af,AF_CONTROL_FORMAT_FMT | AF_CONTROL_SET,&format))
return AF_ERROR;
return AF_OK;
}
case AF_CONTROL_FORMAT_FMT | AF_CONTROL_SET:{
// Check for errors in configuraton
if(AF_OK != check_format(*(int*)arg))
return AF_ERROR;
af->data->format = *(int*)arg;
af->data->bps = af_fmt2bits(af->data->format)/8;
return AF_OK;
}
}
return AF_UNKNOWN;
}
