switching output audio devices

[vg.git] / vg_audio.h

diff --git a/vg_audio.h b/vg_audio.h
index dbc6ff69b425cab9f6cee26d49c751fb0f23523b..2bba7ea09ec4e4ea31fa806cf3519523844a6750 100644 (file)
--- a/vg_audio.h
+++ b/vg_audio.h
@@ -61,7 +61,7 @@ enum audio_format
    k_audio_format_none4  = 0xE00u,
 
    k_audio_format_bird   = 0x1000u,
-   k_audio_format_none5  = 0x1200u,
+   k_audio_format_gen    = 0x1200u,
    k_audio_format_none6  = 0x1400u,
    k_audio_format_none7  = 0x1600u,
    k_audio_format_none8  = 0x1800u,
@@ -82,6 +82,7 @@ struct audio_clip{
    union {              /* TODO oof.. */
       u64 _p64_;
       const char *path;
+      void *func;
    };
 
    u32 flags;
@@ -95,6 +96,7 @@ struct audio_clip{
 
 struct vg_audio_system{
    SDL_AudioDeviceID sdl_output_device;
+   char *force_device_name; /* NULL: using default */
 
    void             *audio_pool, 
                     *decode_buffer;
@@ -259,30 +261,9 @@ static void audio_unlock(void)
    audio_lock_checker_store(0);
    SDL_AtomicUnlock( &vg_audio.sl_sync );
 }
-
 static void audio_mixer_callback( void *user, u8 *stream, int frame_count );
-static void vg_audio_init(void)
-{
-   /* TODO: Move here? */
-   vg_console_reg_var( "debug_audio", &vg_audio.debug_ui, 
-                        k_var_dtype_i32, VG_VAR_CHEAT );
-   vg_console_reg_var( "debug_dsp", &vg_audio.debug_dsp,
-                        k_var_dtype_i32, VG_VAR_CHEAT );
-   vg_console_reg_var( "volume", &vg_audio.external_global_volume,
-                        k_var_dtype_f32, VG_VAR_PERSISTENT );
-
-   /* allocate memory */
-   /* 32mb fixed */
-   vg_audio.audio_pool = 
-      vg_create_linear_allocator( vg_mem.rtmemory, 1024*1024*32, 
-                                  VG_MEMORY_SYSTEM );
-
-   /* fixed */
-   u32 decode_size = AUDIO_DECODE_SIZE * AUDIO_CHANNELS;
-   vg_audio.decode_buffer = vg_linear_alloc( vg_mem.rtmemory, decode_size );
-
-   vg_dsp_init();
 
+static void vg_audio_device_init(void){
    SDL_AudioSpec spec_desired, spec_got;
    spec_desired.callback = audio_mixer_callback;
    spec_desired.channels = 2;
@@ -295,13 +276,20 @@ static void vg_audio_init(void)
    spec_desired.userdata = NULL;
 
    vg_audio.sdl_output_device = 
-      SDL_OpenAudioDevice( NULL, 0, &spec_desired, &spec_got,0 );
+      SDL_OpenAudioDevice( vg_audio.force_device_name, 0, 
+                           &spec_desired, &spec_got,0 );
+
+   vg_info( "Start audio device (%u, F32, %u) @%s\n", 
+               spec_desired.freq,
+               AUDIO_FRAME_SIZE,
+               vg_audio.force_device_name );
 
    if( vg_audio.sdl_output_device ){
       SDL_PauseAudioDevice( vg_audio.sdl_output_device, 0 );
+      vg_success( "Unpaused device %d.\n", vg_audio.sdl_output_device );
    }
    else{
-      vg_fatal_error( 
+      vg_error( 
          "SDL_OpenAudioDevice failed. Your default audio device must support:\n"
          "  Frequency: 44100 hz\n"
          "  Buffer size: 512\n"
@@ -310,6 +298,29 @@ static void vg_audio_init(void)
    }
 }
 
+
+static void vg_audio_init(void){
+   vg_console_reg_var( "debug_audio", &vg_audio.debug_ui, 
+                        k_var_dtype_i32, VG_VAR_CHEAT );
+   vg_console_reg_var( "debug_dsp", &vg_audio.debug_dsp,
+                        k_var_dtype_i32, VG_VAR_CHEAT );
+   vg_console_reg_var( "volume", &vg_audio.external_global_volume,
+                        k_var_dtype_f32, VG_VAR_PERSISTENT );
+
+   /* allocate memory */
+   /* 32mb fixed */
+   vg_audio.audio_pool = 
+      vg_create_linear_allocator( vg_mem.rtmemory, 1024*1024*32, 
+                                  VG_MEMORY_SYSTEM );
+
+   /* fixed */
+   u32 decode_size = AUDIO_DECODE_SIZE * AUDIO_CHANNELS;
+   vg_audio.decode_buffer = vg_linear_alloc( vg_mem.rtmemory, decode_size );
+
+   vg_dsp_init();
+   vg_audio_device_init();
+}
+
 static void vg_audio_free(void)
 {
    vg_dsp_free();
@@ -329,8 +340,8 @@ static void vg_audio_free(void)
 #define AUDIO_EDIT_OWNERSHIP      0x40
 #define AUDIO_EDIT_SAMPLING_RATE  0x80
 
-static void audio_channel_init( audio_channel *ch, audio_clip *clip, u32 flags )
-{
+static void audio_channel_init( audio_channel *ch, audio_clip *clip, 
+                                u32 flags ){
    audio_require_lock();
    ch->group = 0;
    ch->world_id = 0;
@@ -340,6 +351,8 @@ static void audio_channel_init( audio_channel *ch, audio_clip *clip, u32 flags )
 
    if( (ch->source->flags & AUDIO_FLAG_FORMAT) == k_audio_format_bird )
       strcpy( ch->name, "[array]" );
+   else if( (ch->source->flags & AUDIO_FLAG_FORMAT) == k_audio_format_gen )
+      strcpy( ch->name, "[program]" );
    else
       vg_strncpy( clip->path, ch->name, 32, k_strncpy_always_add_null );
 
@@ -636,6 +649,9 @@ static int audio_channel_load_source( audio_channel *ch )
    else if( format == k_audio_format_stereo ){
       ch->source_length = ch->source->size / 2;
    }
+   else if( format == k_audio_format_gen ){
+      ch->source_length = 0xffffffff;
+   }
    else{
       ch->source_length = ch->source->size;
    }
@@ -798,6 +814,10 @@ static void audio_channel_get_samples( audio_channel *ch,
       else if( format == k_audio_format_bird ){
          synth_bird_generate_samples( ch->bird_handle, dst, samples_this_run );
       }
+      else if( format == k_audio_format_gen ){
+         void (*fn)( void *data, f32 *buf, u32 count ) = ch->source->func;
+         fn( ch->source->data, dst, samples_this_run );
+      }
       else{
          i16 *src_buffer = ch->source->data,
              *src        = &src_buffer[ch->cursor];
@@ -1302,8 +1322,15 @@ static void audio_require_clip_loaded( audio_clip *clip )
  * Debugging
  */
 
-static void audio_debug_ui( m4x4f mtx_pv )
-{
+static void audio_debug_ui( 
+
+#ifdef VG_3D
+      m4x4f
+#else
+      m3x3f 
+#endif
+      mtx_pv ){
+
    if( !vg_audio.debug_ui )
       return;
 
@@ -1324,7 +1351,7 @@ static void audio_debug_ui( m4x4f mtx_pv )
                                               &vg_prof_audio_mix,
                                               &vg_prof_audio_dsp}, 3, 
                      budget, (ui_rect){ 4, VG_PROFILE_SAMPLE_COUNT*2 + 8,
-                                        512, 0 }, 3 );
+                                        512, 0 }, 3, 0 );
 
 
    char perf[128];
@@ -1402,6 +1429,7 @@ static void audio_debug_ui( m4x4f mtx_pv )
       ui_fill( row, 0xa0000000 | ch->colour );
       ui_text( row, perf, 1, k_ui_align_middle_left, 0 );
       
+#ifdef VG_3D
       if( AUDIO_FLAG_SPACIAL_3D ){
          v4f wpos;
          v3_copy( ch->editable_state.spacial_falloff, wpos );
@@ -1441,6 +1469,7 @@ static void audio_debug_ui( m4x4f mtx_pv )
             rect_copy( wr, overlap_buffer[ overlap_length ++ ] );
          }
       }
+#endif
        }
 
    audio_unlock();