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#include <string.h>
#include <pulse/pulseaudio.h>
#include <stdio.h>
#include "device.h"
static struct list_devices *g_input; // struct array
static int input_idx;
static int input_num; // size of struct array
static void context_state_callback(pa_context *c, void *userdata)
{
int *ready = userdata;
switch(pa_context_get_state(c)) {
case PA_CONTEXT_CONNECTING:
case PA_CONTEXT_AUTHORIZING:
case PA_CONTEXT_SETTING_NAME:
break;
case PA_CONTEXT_READY: {
*ready = 1;
break;
}
case PA_CONTEXT_TERMINATED:
case PA_CONTEXT_FAILED:
default: {
*ready = 2;
// error
break;
}
}
}
static void context_sourcelist_callback(pa_context *c,
const pa_source_info *i, int eol, void *userdata)
{
// end of list
if(eol > 0)
return;
if(input_idx >= input_num)
{
int i;
struct list_devices *tmp = malloc(
sizeof(struct list_devices) * (input_num+1));
for(i = 0; i < input_num; i++) {
tmp[i].name = g_input[i].name;
tmp[i].description = g_input[i].description;
}
input_num++;
free(g_input);
g_input = tmp;
}
g_input[input_idx].name
= malloc((strlen(i->name)+1)*sizeof(char));
strcpy(g_input[input_idx].name, i->name);
g_input[input_idx].description
= malloc((strlen(i->description)+1)*sizeof(char));
strcpy(g_input[input_idx].description, i->description);
input_idx++;
}
struct list_devices *getInputDeviceList(int *len)
{
pa_mainloop *ml;
pa_mainloop_api *ml_api;
pa_context *context;
pa_operation *operation;
int state = 0;
int ready = 0;
if(!(ml = pa_mainloop_new()))
return NULL;
ml_api = pa_mainloop_get_api(ml);
context = pa_context_new(ml_api, NULL);
// Connect the context
if(pa_context_connect(context, NULL, 0, NULL) < 0)
return NULL;
pa_context_set_state_callback(context, context_state_callback, &ready);
input_idx = 0;
input_num = 3;
g_input = malloc(
sizeof(struct list_devices) * input_num);
for(;;) {
if(ready == 0) {
pa_mainloop_iterate(ml, 1, NULL);
continue;
}
if(ready == 2) {
pa_context_disconnect(context);
pa_context_unref(context);
pa_mainloop_free(ml);
return NULL;
}
switch(state) {
case 0: {
operation = pa_context_get_source_info_list(
context, context_sourcelist_callback, NULL);
state++;
break;
}
case 1: {
if(pa_operation_get_state(operation) == PA_OPERATION_DONE) {
pa_operation_unref(operation);
pa_context_disconnect(context);
pa_context_unref(context);
pa_mainloop_free(ml);
*len = input_num;
return g_input;
}
break;
}
default: {
pa_mainloop_free(ml);
return NULL;
}
}
pa_mainloop_iterate(ml, 1, NULL);
}
}
void freeDeviceList(struct list_devices *list, int len)
{
int i;
for(i = 0; i < len; i++)
{
free(list[i].name);
free(list[i].description);
}
free(list);
}
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