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SDL_AudioFormat - SDL Wiki - Simple DirectMedia Layer
https://wiki.libsdl.org/SDL_AudioFormat#:~:text=Audio%20Format%20Values%20%20%20%20%20,little-endian%20b%20...%20%2017%20more%20rows%20
Audio Examples - Simple DirectMedia Layer
https://www.libsdl.org/release/SDL-1.2.15/docs/html/guideaudioexamples.html
Opening the audio device. SDL_AudioSpec wanted; extern void fill_audio (void *udata, Uint8 *stream, int len); /* Set the audio format */ wanted.freq = 22050; wanted.format = AUDIO_S16; wanted.channels = 2; /* 1 = mono, 2 = stereo */ wanted.samples = 1024; /* Good low-latency value for callback */ wanted.callback = fill_audio; wanted.userdata = NULL; /* Open the audio device, …
SDL_AudioCVT - SDL Wiki
https://wiki.libsdl.org/SDL_AudioCVT
Code Examples. // Change 1024 stereo sample frames at 48000Hz from float32 to int16. SDL_AudioCVT cvt; SDL_BuildAudioCVT (&cvt, AUDIO_F32, 2, 48000, AUDIO_S16, 2, 48000); SDL_assert (cvt.needed); // obviously, this one is always needed. cvt.len = 1024 * 2 * 4; // 1024 stereo float32 sample frames. cvt.buf = (Uint8 *) SDL_malloc (cvt.len * cvt.len_mult); // read …
SDL_BuildAudioCVT - SDL Wiki
https://wiki.libsdl.org/SDL_BuildAudioCVT
SDL_AudioCVT cvt; SDL_BuildAudioCVT (&cvt, AUDIO_F32, 2, 48000, AUDIO_S16, 2, 48000); SDL_assert (cvt.needed); // obviously, this one is always needed. cvt.len = 1024 * 2 * 4; // 1024 stereo float32 sample frames. cvt.buf = (Uint8 *) SDL_malloc (cvt.len * cvt.len_mult); // read your float32 data into cvt.buf here.
Tutorials-AudioStream - SDL Wiki
https://wiki.libsdl.org/Tutorials-AudioStream
// You put data at Sint16/mono/22050Hz, you get back data at Float32/stereo/48000Hz SDL_AudioStream *stream = SDL_NewAudioStream(AUDIO_S16, 1, 22050, AUDIO_F32, 2, 48000); if (stream == NULL) {printf("Uhoh, stream failed to create: %s\n ", SDL_GetError());} else {// We are ready to use the stream!}
SDL2::audio - SDL Audio Functions - metacpan.org
https://metacpan.org/pod/SDL2::audio
If you had set SDL_AUDIO_ALLOW_FORMAT_CHANGE, SDL will change the format in the obtained structure. If that flag was not set, SDL will prepare to convert your callback's float32 audio to int16 before feeding it to the hardware and will keep the originally requested format in …
c++ - SDL Audio Pitch - Playback Rate - Stack Overflow
https://stackoverflow.com/questions/42441956/sdl-audio-pitch-playback-rate
You're setting the audio format to AUDIO_S16, which is "Signed 16-bit little-endian samples". Each sample is two bytes, with the first byte being the LSB. When you read the data in audioCallback, you're reading it as bytes (8 bits), then passing those bytes back to something expecting 16 bits.
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