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Make testaudiostreamdynamicresample compatible with emscripten

main
Anonymous Maarten 2023-08-09 18:56:06 +02:00 committed by Anonymous Maarten
parent 1a7a74fb2e
commit ea8757a748
1 changed files with 153 additions and 92 deletions
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245
test/testaudiostreamdynamicresample.c
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@ -17,113 +17,174 @@
#include <SDL3/SDL_test.h> #include <SDL3/SDL_test.h>
#include "testutils.h" #include "testutils.h"
#ifdef __EMSCRIPTEN__
#include <emscripten/emscripten.h>
#endif
#include <stdlib.h>
#define SLIDER_WIDTH_PERC 500.f / 600.f
#define SLIDER_HEIGHT_PERC 100.f / 480.f
static int done;
static SDLTest_CommonState *state;
static int multiplier = 100;
static SDL_FRect slider_area;
static SDL_FRect slider_fill_area;
static SDL_AudioSpec spec;
static SDL_AudioStream *stream;
static Uint8 *audio_buf = NULL;
static Uint32 audio_len = 0;
static void loop(void)
{
int i;
SDL_Event e;
int newmultiplier = multiplier;
while (SDL_PollEvent(&e)) {
SDLTest_CommonEvent(state, &e, &done);
#ifdef __EMSCRIPTEN__
if (done) {
emscripten_cancel_main_loop();
}
#endif
if (e.type == SDL_EVENT_MOUSE_MOTION) {
if (e.motion.state & SDL_BUTTON_LMASK) {
const SDL_FPoint p = { e.motion.x, e.motion.y };
if (SDL_PointInRectFloat(&p, &slider_area)) {
const float w = SDL_roundf(p.x - slider_area.x);
slider_fill_area.w = w;
newmultiplier = ((int) ((w / slider_area.w) * 800.0f)) - 400;
}
}
}
}
if (multiplier != newmultiplier) {
SDL_AudioSpec newspec;
char title[64];
int newfreq = spec.freq;
multiplier = newmultiplier;
if (multiplier == 0) {
SDL_snprintf(title, sizeof (title), "Drag the slider: Normal speed");
} else if (multiplier < 0) {
SDL_snprintf(title, sizeof (title), "Drag the slider: %.2fx slow", (-multiplier / 100.0f) + 1.0f);
} else {
SDL_snprintf(title, sizeof (title), "Drag the slider: %.2fx fast", (multiplier / 100.0f) + 1.0f);
}
for (i = 0; i < state->num_windows; i++) {
SDL_SetWindowTitle(state->windows[i], title);
}
/* this math sucks, but whatever. */
if (multiplier < 0) {
newfreq = spec.freq + (int) ((spec.freq * (multiplier / 400.0f)) * 0.75f);
} else if (multiplier > 0) {
newfreq = spec.freq + (int) (spec.freq * (multiplier / 100.0f));
}
/* SDL_Log("newfreq=%d multiplier=%d\n", newfreq, multiplier); */
SDL_memcpy(&newspec, &spec, sizeof (spec));
newspec.freq = newfreq;
SDL_SetAudioStreamFormat(stream, &newspec, NULL);
}
/* keep it looping. */
if (SDL_GetAudioStreamAvailable(stream) < ((int) (audio_len / 2))) {
SDL_PutAudioStreamData(stream, audio_buf, audio_len);
}
for (i = 0; i < state->num_windows; i++) {
SDL_SetRenderDrawColor(state->renderers[i], 0, 0, 255, 255);
SDL_RenderClear(state->renderers[i]);
SDL_SetRenderDrawColor(state->renderers[i], 0, 0, 0, 255);
SDL_RenderFillRect(state->renderers[i], &slider_area);
SDL_SetRenderDrawColor(state->renderers[i], 255, 0, 0, 255);
SDL_RenderFillRect(state->renderers[i], &slider_fill_area);
SDL_RenderPresent(state->renderers[i]);
}
}
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
SDL_Window *window; char *filename = NULL;
SDL_Renderer *renderer; int i;
SDL_bool done = SDL_FALSE;
const SDL_FRect slider_area = { (640 - 500) / 2, (480 - 100) / 2, 500, 100 };
SDL_FRect slider_fill_area = slider_area;
int multiplier = 100;
SDL_AudioSpec spec;
Uint8 *audio_buf = NULL;
Uint32 audio_len = 0;
SDL_AudioStream *stream;
SDL_AudioDeviceID device;
const char *fname = "sample.wav";
char *path;
int rc; int rc;
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO); /* Initialize test framework */
window = SDL_CreateWindow("Drag the slider: Normal speed", 640, 480, 0); state = SDLTest_CommonCreateState(argv, SDL_INIT_AUDIO | SDL_INIT_VIDEO);
renderer = SDL_CreateRenderer(window, NULL, 0); if (state == NULL) {
return 1;
}
path = GetNearbyFilename(fname); /* Enable standard application logging */
rc = SDL_LoadWAV(path ? path : fname, &spec, &audio_buf, &audio_len); SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
SDL_free(path);
/* Parse commandline */
for (i = 1; i < argc;) {
int consumed;
consumed = SDLTest_CommonArg(state, i);
if (!consumed) {
if (!filename) {
filename = argv[i];
consumed = 1;
}
}
if (consumed <= 0) {
static const char *options[] = { "[sample.wav]", NULL };
SDLTest_CommonLogUsage(state, argv[0], options);
exit(1);
}
i += consumed;
}
slider_area.x = state->window_w * (1.f - SLIDER_WIDTH_PERC) / 2;
slider_area.y = state->window_h * (1.f - SLIDER_HEIGHT_PERC) / 2;
slider_area.w = SLIDER_WIDTH_PERC * state->window_w;
slider_area.h = SLIDER_HEIGHT_PERC * state->window_h;
slider_fill_area = slider_area;
slider_fill_area.w /= 2;
/* Load the SDL library */
if (!SDLTest_CommonInit(state)) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
return 1;
}
filename = GetResourceFilename(filename, "sample.wav");
rc = SDL_LoadWAV(filename, &spec, &audio_buf, &audio_len);
SDL_free(filename);
if (rc < 0) { if (rc < 0) {
SDL_Log("Failed to load '%s': %s", fname, SDL_GetError()); SDL_Log("Failed to load '%s': %s", filename, SDL_GetError());
SDL_Quit(); SDL_Quit();
return 1; return 1;
} }
stream = SDL_CreateAudioStream(&spec, &spec); for (i = 0; i < state->num_windows; i++) {
SDL_PutAudioStreamData(stream, audio_buf, audio_len); SDL_SetWindowTitle(state->windows[i], "Drag the slider: Normal speed");
device = SDL_OpenAudioDevice(SDL_AUDIO_DEVICE_DEFAULT_OUTPUT, &spec);
SDL_BindAudioStream(device, stream);
slider_fill_area.w /= 2;
while (!done) {
SDL_Event e;
int newmultiplier = multiplier;
while (SDL_PollEvent(&e)) {
if (e.type == SDL_EVENT_QUIT) {
done = 1;
} else if (e.type == SDL_EVENT_KEY_DOWN) {
if (e.key.keysym.sym == SDLK_ESCAPE) {
done = 1;
}
} else if (e.type == SDL_EVENT_MOUSE_MOTION) {
if (e.motion.state & SDL_BUTTON_LMASK) {
const SDL_FPoint p = { e.motion.x, e.motion.y };
if (SDL_PointInRectFloat(&p, &slider_area)) {
const float w = SDL_roundf(p.x - slider_area.x);
slider_fill_area.w = w;
newmultiplier = ((int) ((w / slider_area.w) * 800.0f)) - 400;
}
}
}
}
if (multiplier != newmultiplier) {
SDL_AudioSpec newspec;
char title[64];
int newfreq = spec.freq;
multiplier = newmultiplier;
if (multiplier == 0) {
SDL_snprintf(title, sizeof (title), "Drag the slider: Normal speed");
} else if (multiplier < 0) {
SDL_snprintf(title, sizeof (title), "Drag the slider: %.2fx slow", (-multiplier / 100.0f) + 1.0f);
} else {
SDL_snprintf(title, sizeof (title), "Drag the slider: %.2fx fast", (multiplier / 100.0f) + 1.0f);
}
SDL_SetWindowTitle(window, title);
/* this math sucks, but whatever. */
if (multiplier < 0) {
newfreq = spec.freq + (int) ((spec.freq * (multiplier / 400.0f)) * 0.75f);
} else if (multiplier > 0) {
newfreq = spec.freq + (int) (spec.freq * (multiplier / 100.0f));
}
/* SDL_Log("newfreq=%d multiplier=%d\n", newfreq, multiplier); */
SDL_memcpy(&newspec, &spec, sizeof (spec));
newspec.freq = newfreq;
SDL_SetAudioStreamFormat(stream, &newspec, NULL);
}
/* keep it looping. */
if (SDL_GetAudioStreamAvailable(stream) < ((int) (audio_len / 2))) {
SDL_PutAudioStreamData(stream, audio_buf, audio_len);
}
SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
SDL_RenderClear(renderer);
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_RenderFillRect(renderer, &slider_area);
SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
SDL_RenderFillRect(renderer, &slider_fill_area);
SDL_RenderPresent(renderer);
} }
SDL_DestroyRenderer(renderer); stream = SDL_CreateAudioStream(&spec, &spec);
SDL_DestroyWindow(window); SDL_PutAudioStreamData(stream, audio_buf, audio_len);
SDL_CloseAudioDevice(device); SDL_BindAudioStream(state->audio_id, stream);
#ifdef __EMSCRIPTEN__
emscripten_set_main_loop(loop, 0, 1);
#else
while (!done) {
loop();
}
#endif
SDL_DestroyAudioStream(stream); SDL_DestroyAudioStream(stream);
SDL_free(audio_buf); SDL_free(audio_buf);
SDLTest_CommonQuit(state);
SDL_Quit(); SDL_Quit();
return 0; return 0;
} }