Show more specific errors when audio device fails

[mercenary-reloaded.git] / src / libsdl / sdl.c

diff --git a/src/libsdl/sdl.c b/src/libsdl/sdl.c
index 14e5440..611f046 100644 (file)
--- a/src/libsdl/sdl.c
+++ b/src/libsdl/sdl.c
@@ -30,10 +30,13 @@
 
 static int sdl_initialized = 0;
 static int audio_initialized = 0;
+static const char *device_string = NULL;
+static SDL_AudioDeviceID audio_devid = 0;
 static SDL_Window *gl_window = NULL;
 static SDL_GLContext gl_context = NULL;
 static void (*keyboard_sdl)(int down, enum keycode keycode) = NULL;
 static void (*audio_sdl)(float *data, int len) = NULL;
+static void (*resize_window_sdl)(int width, int height) = NULL;
 
 static void audio_cb(void __attribute__((unused)) *userdata, Uint8 *stream, int len)
 {
@@ -41,15 +44,16 @@ static void audio_cb(void __attribute__((unused)) *userdata, Uint8 *stream, int
 
        SDL_memset(stream, 0, len);
        audio_sdl(audio_data, len / sizeof(float) / 2);
-       SDL_MixAudio(stream, (Uint8 *)audio_data, len, SDL_MIX_MAXVOLUME);
+       SDL_MixAudioFormat(stream, (Uint8 *)audio_data, AUDIO_F32, len, SDL_MIX_MAXVOLUME / 2.0);
 }
 
-int init_sdl(const char *progname, int width, int height, int sound_samplerate, int sound_chunk, void (*keyboard)(int down, enum keycode keycode), void (*audio)(float *data, int len), int multisampling)
+int init_sdl(const char *progname, int width, int height, int sound_samplerate, int sound_chunk, void (*keyboard)(int down, enum keycode keycode), void (*audio)(float *data, int len), void (*resize_window)(int width, int height), int multisampling, int vbl_sync, int rift)
 {
        int rc;
 
        keyboard_sdl = keyboard;
        audio_sdl = audio;
+       resize_window_sdl = resize_window;
 
        /* init SDL library */
        rc = SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO);
@@ -59,7 +63,7 @@ int init_sdl(const char *progname, int width, int height, int sound_samplerate,
        }
        sdl_initialized = 1;
 
-       if (multisampling) {
+       if (multisampling > 1) {
                SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
                SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
                SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
@@ -108,7 +112,7 @@ int init_sdl(const char *progname, int width, int height, int sound_samplerate,
                goto error;
        }
 
-       rc = SDL_GL_SetSwapInterval(1);
+       rc = SDL_GL_SetSwapInterval((vbl_sync) ? 1 : 0);
        if (rc < 0) {
                print_error("Failed to set SDL's OpenGL swap interval to VBLANK\n");
                // continue anyway
@@ -128,9 +132,22 @@ int init_sdl(const char *progname, int width, int height, int sound_samplerate,
        /* just in case */
        glDisable(GL_DEPTH_TEST);
        glDisable(GL_CULL_FACE);
-       if (multisampling)
+       if (multisampling > 1)
                glEnable(GL_MULTISAMPLE);
 
+       if (rift) {
+               int i, count;
+               count = SDL_GetNumAudioDevices(0);
+               const char *string;
+               for(i = 0; i < count; i++) {
+                       string = SDL_GetAudioDeviceName(i, 0);
+                       if (strstr(string, "Rift"))
+                               device_string = string;
+               }
+               if (!device_string)
+                       print_error("Oculus Rift headset not found, falling back to default audio device.\n");
+       }
+
        /* open audio */
        SDL_AudioSpec want, have;
        SDL_memset(&want, 0, sizeof(want)); /* or SDL_zero(want) */
@@ -139,27 +156,25 @@ int init_sdl(const char *progname, int width, int height, int sound_samplerate,
        want.channels = 2;
        want.samples = sound_chunk; /* must be a power of two */
        want.callback = audio_cb;
-       rc = SDL_OpenAudio(&want, &have);
-       if (rc < 0) {
+       audio_devid = SDL_OpenAudioDevice(device_string, 0, &want, &have, SDL_AUDIO_ALLOW_ANY_CHANGE);
+       if (audio_devid <= 0) {
                print_error("Failed to open audio! (No speaker connected?)\n");
+               rc = -EIO;
                goto error;
        } else if (have.format != want.format) {
-               print_error("Failed to open audio with desired audio format\n");
-               SDL_CloseAudio();
+               print_error("Failed to open audio with desired audio format (want %d, got %d)\n", want.format, have.format);
                rc = -EIO;
                goto error;
        } else if (have.freq != want.freq) {
-               print_error("Failed to open audio with desired sample rate\n");
-               SDL_CloseAudio();
+               print_error("Failed to open audio with desired sample rate (want %d, got %d)\n", want.freq, have.freq);
                rc = -EIO;
                goto error;
        } else if (have.channels != want.channels) {
-               print_error("Failed to open audio with desired channels (got %d)\n", have.channels);
-               SDL_CloseAudio();
+               print_error("Failed to open audio with desired number of channels (want %d, got %d)\n", want.channels, have.channels);
                rc = -EIO;
                goto error;
        } else {
-               SDL_PauseAudio(0);
+               SDL_PauseAudioDevice(audio_devid, 0);
                audio_initialized = 1;
        }
 
@@ -268,7 +283,7 @@ int event_sdl(void)
                        quit = 1;
                if (event.type == SDL_WINDOWEVENT) {
                        if (event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED)
-                               resize_opengl(event.window.data1, event.window.data2);
+                               resize_window_sdl(event.window.data1, event.window.data2);
                }
                if (event.type == SDL_KEYDOWN) {
                        switch (event.key.keysym.sym) {
@@ -331,10 +346,13 @@ void exit_sdl(void)
 
        /* exit SDL library */
        if (audio_initialized) {
-               SDL_PauseAudio(1);
-               SDL_CloseAudio();
+               SDL_PauseAudioDevice(audio_devid, 1);
                audio_initialized = 0;
        }
+       if (audio_devid > 0) {
+               SDL_CloseAudioDevice(audio_devid);
+               audio_devid = 0;
+       }
        if (sdl_initialized) {
                SDL_Quit();
                sdl_initialized = 0;