4f55271571
It was intended to make the API easier to use, but various automatic garbage collection all had flaws, and making the application periodically clean up temporary memory added cognitive load to using the API, and in many cases was it was difficult to restructure threaded code to handle this. So, we're largely going back to the original system, where the API returns allocated results and you free them. In addition, to solve the problems we originally wanted temporary memory for: * Short strings with a finite count, like device names, get stored in a per-thread string pool. * Events continue to use temporary memory internally, which is cleaned up on the next event processing cycle.
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
/*
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Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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#include <SDL3/SDL.h>
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#include <SDL3/SDL_main.h>
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#include <SDL3/SDL_test.h>
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static void
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print_devices(SDL_bool recording)
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{
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SDL_AudioSpec spec;
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const char *typestr = (recording ? "recording" : "playback");
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int n = 0;
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int frames;
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SDL_AudioDeviceID *devices = recording ? SDL_GetAudioRecordingDevices(&n) : SDL_GetAudioPlaybackDevices(&n);
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if (!devices) {
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SDL_Log(" Driver failed to report %s devices: %s\n\n", typestr, SDL_GetError());
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} else if (n == 0) {
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SDL_Log(" No %s devices found.\n\n", typestr);
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} else {
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int i;
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SDL_Log("Found %d %s device%s:\n", n, typestr, n != 1 ? "s" : "");
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for (i = 0; i < n; i++) {
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const char *name = SDL_GetAudioDeviceName(devices[i]);
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if (name) {
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SDL_Log(" %d: %s\n", i, name);
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} else {
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SDL_Log(" %d Error: %s\n", i, SDL_GetError());
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}
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if (SDL_GetAudioDeviceFormat(devices[i], &spec, &frames) == 0) {
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SDL_Log(" Sample Rate: %d\n", spec.freq);
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SDL_Log(" Channels: %d\n", spec.channels);
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SDL_Log(" SDL_AudioFormat: %X\n", spec.format);
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SDL_Log(" Buffer Size: %d frames\n", frames);
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}
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}
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SDL_Log("\n");
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}
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SDL_free(devices);
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}
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int main(int argc, char **argv)
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{
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SDL_AudioSpec spec;
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int i;
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int n;
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int frames;
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SDLTest_CommonState *state;
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/* Initialize test framework */
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state = SDLTest_CommonCreateState(argv, 0);
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if (!state) {
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return 1;
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}
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/* Enable standard application logging */
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SDL_SetLogPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
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/* Parse commandline */
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if (!SDLTest_CommonDefaultArgs(state, argc, argv)) {
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return 1;
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}
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/* Load the SDL library */
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if (SDL_Init(SDL_INIT_AUDIO) < 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
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return 1;
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}
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/* Print available audio drivers */
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n = SDL_GetNumAudioDrivers();
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if (n == 0) {
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SDL_Log("No built-in audio drivers\n\n");
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} else {
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SDL_Log("Built-in audio drivers:\n");
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for (i = 0; i < n; ++i) {
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SDL_Log(" %d: %s\n", i, SDL_GetAudioDriver(i));
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}
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SDL_Log("Select a driver with the SDL_AUDIO_DRIVER environment variable.\n");
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}
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SDL_Log("Using audio driver: %s\n\n", SDL_GetCurrentAudioDriver());
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print_devices(SDL_FALSE);
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print_devices(SDL_TRUE);
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if (SDL_GetAudioDeviceFormat(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, &spec, &frames) < 0) {
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SDL_Log("Error when calling SDL_GetAudioDeviceFormat(default playback): %s\n", SDL_GetError());
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} else {
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SDL_Log("Default Playback Device:\n");
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SDL_Log("Sample Rate: %d\n", spec.freq);
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SDL_Log("Channels: %d\n", spec.channels);
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SDL_Log("SDL_AudioFormat: %X\n", spec.format);
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SDL_Log("Buffer Size: %d frames\n", frames);
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}
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if (SDL_GetAudioDeviceFormat(SDL_AUDIO_DEVICE_DEFAULT_RECORDING, &spec, &frames) < 0) {
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SDL_Log("Error when calling SDL_GetAudioDeviceFormat(default recording): %s\n", SDL_GetError());
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} else {
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SDL_Log("Default Recording Device:\n");
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SDL_Log("Sample Rate: %d\n", spec.freq);
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SDL_Log("Channels: %d\n", spec.channels);
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SDL_Log("SDL_AudioFormat: %X\n", spec.format);
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SDL_Log("Buffer Size: %d frames\n", frames);
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}
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SDL_Quit();
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SDLTest_CommonDestroyState(state);
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return 0;
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}
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