e23257307e
This declares that any `const char *` returned from SDL is owned by SDL, and promises to be valid _at least_ until the next time the event queue runs, or SDL_Quit() is called, even if the thing that owns the string gets destroyed or changed before then. This is noted in the headers as "the SDL_GetStringRule", so this will both be greppable to find a detailed explaination in docs/README-strings.md and wikiheaders will automatically turn it into a link we can point at the appropriate documentation. Fixes #9902. (and several FIXMEs, both known and yet-undocumented.)
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 iscapture)
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{
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SDL_AudioSpec spec;
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const char *typestr = ((iscapture) ? "capture" : "output");
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int n = 0;
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int frames;
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SDL_AudioDeviceID *devices = iscapture ? SDL_GetAudioCaptureDevices(&n) : SDL_GetAudioOutputDevices(&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_OUTPUT, &spec, &frames) < 0) {
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SDL_Log("Error when calling SDL_GetAudioDeviceFormat(default output): %s\n", SDL_GetError());
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} else {
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SDL_Log("Default Output 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_CAPTURE, &spec, &frames) < 0) {
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SDL_Log("Error when calling SDL_GetAudioDeviceFormat(default capture): %s\n", SDL_GetError());
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} else {
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SDL_Log("Default Capture 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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