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Location: alysbrooks-public/games/isometric-park-fna/FNA/lib/FAudio/utils/testreverb/audio_xaudio.cpp - annotation

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Commit Description:
Tweak UI appearance.
Commit Description:
Tweak UI appearance.
References:
r292:50316d2c86a6 default
File last commit:
r0:e33f209de7e5 default
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FNA/lib/FAudio/utils/testreverb/audio_xaudio.cpp
291 lines | 7.9 KiB | text/x-c | CppLexer
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alys
Early working version (including all dependencies, lol).
 r0
#include "audio.h"
#ifdef HAVE_XAUDIO2
#include <xaudio2.h>
#include <xaudio2fx.h>
#include <SDL.h>
struct AudioContext
{
IXAudio2 *xaudio2;
uint32_t output_5p1;
AudioVoiceType effect_on_voice;
IXAudio2MasteringVoice *mastering_voice;
IXAudio2SubmixVoice *submix_voice;
IXAudio2SourceVoice *source_voice;
IXAudio2Voice *voices[3];
unsigned int wav_channels;
unsigned int wav_samplerate;
drwav_uint64 wav_sample_count;
float * wav_samples;
XAUDIO2_BUFFER buffer;
XAUDIO2_EFFECT_DESCRIPTOR reverb_effect;
XAUDIO2_EFFECT_CHAIN effect_chain;
ReverbParameters reverb_params;
bool reverb_enabled;
};
void xaudio_destroy_context(AudioContext *context)
{
if (context != NULL)
{
context->source_voice->DestroyVoice();
context->submix_voice->DestroyVoice();
context->mastering_voice->DestroyVoice();
context->xaudio2->Release();
delete context;
}
}
void xaudio_create_voice(AudioContext *context, float *buffer, size_t buffer_size, int sample_rate, int num_channels)
{
// create reverb effect
IUnknown *xapo = NULL;
HRESULT hr = XAudio2CreateReverb(&xapo);
if (FAILED(hr))
{
return;
}
// create effect chain
context->reverb_effect.InitialState = context->reverb_enabled;
context->reverb_effect.OutputChannels = (context->output_5p1) ? 6 : context->wav_channels;
context->reverb_effect.pEffect = xapo;
context->effect_chain.EffectCount = 1;
context->effect_chain.pEffectDescriptors = &context->reverb_effect;
XAUDIO2_EFFECT_CHAIN *voice_effect[3] = {NULL, NULL, NULL};
voice_effect[context->effect_on_voice] = &context->effect_chain;
// create a mastering voice
uint32_t inChannels = context->wav_channels;
if (context->output_5p1 && context->effect_on_voice != AudioVoiceType_Master)
{
inChannels = 6;
}
hr = context->xaudio2->CreateMasteringVoice(
&context->mastering_voice,
inChannels,
XAUDIO2_DEFAULT_SAMPLERATE,
0,
0,
voice_effect[AudioVoiceType_Master]
);
if (FAILED(hr))
{
return;
}
context->voices[AudioVoiceType_Master] = context->mastering_voice;
// create a submix voice
inChannels = context->wav_channels;
if (context->output_5p1 && context->effect_on_voice == AudioVoiceType_Source)
{
inChannels = 6;
}
hr = context->xaudio2->CreateSubmixVoice(
&context->submix_voice,
inChannels,
SAMPLERATE,
0,
0,
NULL,
voice_effect[AudioVoiceType_Submix]
);
if (FAILED(hr))
{
return;
}
context->voices[AudioVoiceType_Submix] = context->submix_voice;
context->submix_voice->SetVolume(1.0f);
// create a source voice
XAUDIO2_SEND_DESCRIPTOR desc = {0, context->submix_voice};
XAUDIO2_VOICE_SENDS sends = {1, &desc};
WAVEFORMATEX waveFormat;
waveFormat.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
waveFormat.nChannels = num_channels;
waveFormat.nSamplesPerSec = sample_rate;
waveFormat.nBlockAlign = num_channels * 4;
waveFormat.nAvgBytesPerSec = waveFormat.nSamplesPerSec * waveFormat.nBlockAlign;
waveFormat.wBitsPerSample = 32;
waveFormat.cbSize = 0;
hr = context->xaudio2->CreateSourceVoice(
&context->source_voice,
&waveFormat,
0,
XAUDIO2_DEFAULT_FREQ_RATIO,
NULL,
&sends,
voice_effect[AudioVoiceType_Source]
);
if (FAILED(hr))
{
return;
}
context->voices[AudioVoiceType_Source] = context->source_voice;
context->source_voice->SetVolume(1.0f);
xapo->Release();
// submit the array
SDL_zero(context->buffer);
context->buffer.AudioBytes = 4 * buffer_size * num_channels;
context->buffer.pAudioData = (byte *)buffer;
context->buffer.Flags = XAUDIO2_END_OF_STREAM;
context->buffer.PlayBegin = 0;
context->buffer.PlayLength = buffer_size;
context->buffer.LoopBegin = 0;
context->buffer.LoopLength = 0;
context->buffer.LoopCount = 0;
}
void xaudio_reverb_set_params(AudioContext *context)
{
XAUDIO2FX_REVERB_PARAMETERS native_params = { 0 };
native_params.WetDryMix = context->reverb_params.WetDryMix;
native_params.ReflectionsDelay = context->reverb_params.ReflectionsDelay;
native_params.ReverbDelay = context->reverb_params.ReverbDelay;
native_params.RearDelay = context->reverb_params.RearDelay;
native_params.PositionLeft = context->reverb_params.PositionLeft;
native_params.PositionRight = context->reverb_params.PositionRight;
native_params.PositionMatrixLeft = context->reverb_params.PositionMatrixLeft;
native_params.PositionMatrixRight = context->reverb_params.PositionMatrixRight;
native_params.EarlyDiffusion = context->reverb_params.EarlyDiffusion;
native_params.LateDiffusion = context->reverb_params.LateDiffusion;
native_params.LowEQGain = context->reverb_params.LowEQGain;
native_params.LowEQCutoff = context->reverb_params.LowEQCutoff;
native_params.HighEQGain = context->reverb_params.HighEQGain;
native_params.HighEQCutoff = context->reverb_params.HighEQCutoff;
native_params.RoomFilterFreq = context->reverb_params.RoomFilterFreq;
native_params.RoomFilterMain = context->reverb_params.RoomFilterMain;
native_params.RoomFilterHF = context->reverb_params.RoomFilterHF;
native_params.ReflectionsGain = context->reverb_params.ReflectionsGain;
native_params.ReverbGain = context->reverb_params.ReverbGain;
native_params.DecayTime = context->reverb_params.DecayTime;
native_params.Density = context->reverb_params.Density;
native_params.RoomSize = context->reverb_params.RoomSize;
/* 2.8+ only but zero-initialization catches this
native_params.DisableLateField = 0; */
HRESULT hr = context->voices[context->effect_on_voice]->SetEffectParameters(
0,
&native_params,
sizeof(XAUDIO2FX_REVERB_PARAMETERS)
);
}
void xaudio_wave_load(AudioContext *context, AudioSampleWave sample, bool stereo)
{
if (context->source_voice)
{
context->source_voice->DestroyVoice();
context->submix_voice->DestroyVoice();
context->mastering_voice->DestroyVoice();
}
context->wav_samples = WAVS_Open(
sample,
stereo,
&context->wav_channels,
&context->wav_samplerate,
&context->wav_sample_count);
context->wav_sample_count /= context->wav_channels;
audio_create_voice(context, context->wav_samples, context->wav_sample_count, context->wav_samplerate, context->wav_channels);
xaudio_reverb_set_params(context);
}
void xaudio_wave_play(AudioContext *context)
{
context->source_voice->Stop();
context->source_voice->FlushSourceBuffers();
HRESULT hr = context->source_voice->SubmitSourceBuffer(&context->buffer);
if (FAILED(hr))
{
return;
}
context->source_voice->Start();
}
void xaudio_wave_stop(AudioContext *context)
{
context->source_voice->Stop(XAUDIO2_PLAY_TAILS);
}
void xaudio_effect_change(AudioContext *context, bool enabled, ReverbParameters *params)
{
HRESULT hr;
if (context->reverb_enabled && !enabled)
{
hr = context->voices[context->effect_on_voice]->DisableEffect(0);
context->reverb_enabled = enabled;
}
else if (!context->reverb_enabled && enabled)
{
hr = context->voices[context->effect_on_voice]->EnableEffect(0);
context->reverb_enabled = enabled;
}
memcpy(&context->reverb_params, params, sizeof(ReverbParameters));
xaudio_reverb_set_params(context);
}
AudioContext *xaudio_create_context(bool output_5p1, AudioVoiceType effect_on_voice)
{
// setup function pointers
audio_destroy_context = xaudio_destroy_context;
audio_create_voice = xaudio_create_voice;
audio_wave_load = xaudio_wave_load;
audio_wave_play = xaudio_wave_play;
audio_wave_stop = xaudio_wave_stop;
audio_effect_change = xaudio_effect_change;
// create XAudio object
IXAudio2 *xaudio2;
HRESULT hr = XAudio2Create(&xaudio2);
if (FAILED(hr))
{
return NULL;
}
// return a context object
AudioContext *context = new AudioContext();
context->xaudio2 = xaudio2;
context->output_5p1 = output_5p1;
context->effect_on_voice = effect_on_voice;
context->mastering_voice = NULL;
context->submix_voice = NULL;
context->source_voice = NULL;
context->wav_samples = NULL;
context->reverb_params = audio_reverb_presets[0];
context->reverb_enabled = false;
// load the first wave
audio_wave_load(context, (AudioSampleWave) 0, false);
return context;
}
#endif // HAVE_XAUDIO2