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This commit is contained in:
Dmitry Marakasov 2015-08-31 18:41:01 +03:00
parent f3511a1a71
commit 7121b78543
1 changed files with 1 additions and 2 deletions
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3
examples/mixer_music_sine.cc
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@ -30,13 +30,12 @@ using namespace SDL2pp;
int main() try { int main() try {
SDL sdl(SDL_INIT_AUDIO); SDL sdl(SDL_INIT_AUDIO);
Mixer mixer(MIX_DEFAULT_FREQUENCY, AUDIO_S16SYS, 1, 4096); Mixer mixer(MIX_DEFAULT_FREQUENCY, AUDIO_S16SYS, 1, 4096);
float frequency = 2093.00f; // C7 tone float frequency = 2093.00f; // C7 tone
int64_t nsample = 0; int64_t nsample = 0;
// Open audio device // Set custom music hook which generates a sine wave
mixer.SetMusicHook([&nsample, frequency](Uint8* stream, int len) { mixer.SetMusicHook([&nsample, frequency](Uint8* stream, int len) {
// fill provided buffer with sine wave // fill provided buffer with sine wave
for (Uint8* ptr = stream; ptr < stream + len; ptr += 2) for (Uint8* ptr = stream; ptr < stream + len; ptr += 2)