joel16/SDL2-PSP-Sample
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Include a simple audio sample for testing

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joel16 2020-04-01 14:52:02 -04:00
parent d4552de252
commit 55a3a1613b
2 changed files with 55 additions and 9 deletions
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Roland-GR-1-Trumpet-C5.wav Normal file
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64
src/main.c
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@ -8,6 +8,25 @@ PSP_MODULE_INFO("SDL2", 0, 1, 1);
/* Define the main thread's attribute value (optional) */
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER | THREAD_ATTR_VFPU);
#define MUS_PATH "Roland-GR-1-Trumpet-C5.wav"
// variable declarations
static Uint8 *audio_pos; // global pointer to the audio buffer to be played
static Uint32 audio_len; // remaining length of the sample we have to play
void my_audio_callback(void *userdata, Uint8 *stream, int len) {
if (audio_len == 0)
return;
len = (len > audio_len ? audio_len : len);
SDL_memcpy(stream, audio_pos, len); // simply copy from one buffer into the other
//SDL_MixAudio(stream, audio_pos, len, SDL_MIX_MAXVOLUME);// mix from one buffer into another
audio_pos += len;
audio_len -= len;
}
void draw_rects(SDL_Renderer *renderer, int x, int y) {
// R
SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
@ -34,7 +53,7 @@ int main(int argc, char *argv[]) {
// SET THIS TO ACTIVATE joystick
SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) {
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_AUDIO) < 0) {
SDL_Log("SDL_Init: %s\n", SDL_GetError());
return -1;
}
@ -65,8 +84,36 @@ int main(int argc, char *argv[]) {
return -1;
}
if (joystick)
SDL_Log("Joystick found: %s\n", SDL_JoystickName(joystick));
// Debugging
//if (joystick)
// SDL_Log("Joystick found: %s\n", SDL_JoystickName(joystick));
// local variables
static Uint32 wav_length; // length of our sample
static Uint8 *wav_buffer; // buffer containing our audio file
static SDL_AudioSpec wav_spec; // the specs of our piece of music
/* Load the WAV */
// the specs, length and buffer of our wav are filled
if (SDL_LoadWAV(MUS_PATH, &wav_spec, &wav_buffer, &wav_length) == NULL) {
SDL_Log("SDL_LoadWAV failed: %s\n", SDL_GetError());
return -1;
}
// set the callback function
wav_spec.callback = my_audio_callback;
wav_spec.userdata = NULL;
audio_pos = wav_buffer; // copy sound buffer
audio_len = wav_length; // copy file length
/* Open the audio device */
if (SDL_OpenAudio(&wav_spec, NULL) < 0){
SDL_Log("Couldn't open audio: %s\n", SDL_GetError());
return -1;
}
/* Start playing */
SDL_PauseAudio(0);
while (!done) {
while (SDL_PollEvent(&event)) {
@ -83,12 +130,8 @@ int main(int argc, char *argv[]) {
// seek for joystick #0
if (event.jbutton.which == 0) {
if (event.jbutton.button == 2) {
// (Cross) button down
if(w == 480) {
SDL_SetWindowSize(window, 240, 136);
} else {
SDL_SetWindowSize(window, 480, 272);
}
audio_pos = wav_buffer; // copy sound buffer
audio_len = wav_length;
}
else if (event.jbutton.button == 11) {
// (Start) button down
@ -122,6 +165,9 @@ int main(int argc, char *argv[]) {
}
}
// shut everything down
SDL_CloseAudio();
SDL_FreeWAV(wav_buffer);
SDL_JoystickClose(joystick);
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);