Trying to overcome gapless problems with mpg123 + output to WAV

ao-play-async/ao_playasync.c

@@ -351,7 +351,7 @@ static void init_ao()
   }
 }
 
-void *ao_create_async(int bits, int rate, int channels, int byte_format)
+void *ao_create_async(int bits, int rate, int channels, int byte_format, const char *wav_file_output)
 {
     init_ao();
 
@@ -364,7 +364,14 @@ void *ao_create_async(int bits, int rate, int channels, int byte_format)
     fmt.channels = channels;
     fmt.matrix = NULL;
 
-    ao_device *dev = ao_open_live(ao_default_driver_id(), &fmt, NULL);
+    ao_device *dev;
+    if (wav_file_output != NULL) {
+      int driver_id = ao_driver_id("wav");
+      dev = ao_open_file(driver_id, wav_file_output, 1, &fmt, NULL);
+    } else {
+      dev = ao_open_live(ao_default_driver_id(), &fmt, NULL);
+    }
+
     if (dev == NULL) {
       fprintf(stderr, "Cannot open ao-device, error code = %d\n", errno);
       return NULL;

ao-play-async/ao_playasync.h

@@ -29,7 +29,7 @@ typedef struct {
 } BufferInfo_t;
 
 AOPLAYASYNC_EXPORT int ao_async_version(void);
-AOPLAYASYNC_EXPORT void *ao_create_async(int bits, int rate, int channels, int byte_format);
+AOPLAYASYNC_EXPORT void *ao_create_async(int bits, int rate, int channels, int byte_format, const char *wav_file_output);
 AOPLAYASYNC_EXPORT void ao_stop_async(void *handle);
 AOPLAYASYNC_EXPORT void ao_play_async(void *handle, int music_id, double at_second, double music_duration, int buf_size, void *mem, BufferInfo_t info);
 AOPLAYASYNC_EXPORT void ao_clear_async(void *handle);