Added unfinished Wii U audio backend
Currently doesn't produce sound unless you stop Organya from calling AudioBackend_CreateSound, because it exhausts the Wii U's 150-sound pool before the SFX get any of them.
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Clownacy
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3 changed files with 176 additions and 1 deletions
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@ -18,7 +18,7 @@ option(DEBUG_SAVE "Re-enable the ability to drag-and-drop save files onto the wi
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option(BUILD_DOCONFIG "Compile a DoConfig clone tool - not useful for console ports" ON)
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set(BACKEND_RENDERER "SDLTexture" CACHE STRING "Which renderer the game should use: 'OpenGL3' for an OpenGL 3.2 renderer, 'OpenGLES2' for an OpenGL ES 2.0 renderer, 'SDLTexture' for SDL2's hardware-accelerated Texture API, 'SDLSurface' for SDL2's software-rendered Surface API, or 'Software' for a handwritten software renderer")
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set(BACKEND_AUDIO "SDL2" CACHE STRING "Which audio backend the game should use: 'SDL2', 'miniaudio', or 'Null'")
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set(BACKEND_AUDIO "SDL2" CACHE STRING "Which audio backend the game should use: 'SDL2', 'miniaudio', 'WiiU', or 'Null'")
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set(BACKEND_PLATFORM "SDL2" CACHE STRING "Which platform backend the game should use: 'SDL2', 'GLFW3', 'WiiU', or 'Null'")
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option(LTO "Enable link-time optimisation" OFF)
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@ -330,6 +330,10 @@ elseif(BACKEND_AUDIO MATCHES "miniaudio")
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endif()
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target_link_libraries(CSE2 PRIVATE ${CMAKE_DL_LIBS})
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elseif(BACKEND_AUDIO MATCHES "WiiU")
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target_sources(CSE2 PRIVATE
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"src/Backends/Audio/WiiU.cpp"
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)
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elseif(BACKEND_AUDIO MATCHES "Null")
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target_sources(CSE2 PRIVATE
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"src/Backends/Audio/Null.cpp"
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@ -75,6 +75,7 @@ Name | Function
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`-DBACKEND_RENDERER=Software` | Use the handwritten software renderer
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`-DBACKEND_AUDIO=SDL2` | Use the SDL2-driven software audio-mixer
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`-DBACKEND_AUDIO=miniaudio` | Use the miniaudio-driven software audio-mixer
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`-DBACKEND_AUDIO=WiiU` | Use the hardware-accelerated audio backend for the Wii U
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`-DBACKEND_AUDIO=Null` | Use the dummy audio backend (doesn't produce any sound)
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`-DBACKEND_PLATFORM=SDL2` | Use SDL2 for windowing and OS-abstraction
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`-DBACKEND_PLATFORM=GLFW3` | Use GLFW3 for windowing and OS-abstraction
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170
src/Backends/Audio/WiiU.cpp
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170
src/Backends/Audio/WiiU.cpp
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@ -0,0 +1,170 @@
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#include "../Audio.h"
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#include <math.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <coreinit/cache.h>
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#include <sndcore2/core.h>
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#include <sndcore2/voice.h>
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#include <sndcore2/drcvs.h>
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define CLAMP(x, y, z) MIN(MAX((x), (y)), (z))
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struct AudioBackend_Sound
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{
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unsigned char *samples;
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AXVoice *voice;
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};
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static double MillibelToScale(long volume)
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{
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// Volume is in hundredths of a decibel, from 0 to -10000
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volume = CLAMP(volume, -10000, 0);
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return pow(10.0, volume / 2000.0);
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}
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bool AudioBackend_Init(void)
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{
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if (!AXIsInit())
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{
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static AXInitParams initparams =
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{
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.renderer = AX_INIT_RENDERER_48KHZ,
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.pipeline = AX_INIT_PIPELINE_SINGLE,
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};
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AXInitWithParams(&initparams);
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}
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return true;
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}
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void AudioBackend_Deinit(void)
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{
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AXQuit();
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}
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AudioBackend_Sound* AudioBackend_CreateSound(unsigned int frequency, const unsigned char *samples, size_t length)
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{
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AudioBackend_Sound *sound = (AudioBackend_Sound*)malloc(sizeof(AudioBackend_Sound));
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if (sound != NULL)
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{
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unsigned char *samples_copy = (unsigned char*)malloc(length);
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if (samples_copy != NULL)
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{
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for (size_t i = 0; i < length; ++i)
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samples_copy[i] = samples[i] - 0x80;
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DCStoreRange(samples_copy, length);
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AXVoice *voice = AXAcquireVoice(31, NULL, NULL);
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if (voice != NULL)
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{
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AXVoiceOffsets offs;
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AXVoiceVeData vol = {
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.volume = 0x8000,
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};
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AXVoiceBegin(voice);
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AXSetVoiceType(voice, 0);
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AXSetVoiceVe(voice, &vol);
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static AXVoiceDeviceMixData mix_data[1][6];
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mix_data[0][0].bus[0].volume = 0x8000;
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mix_data[0][1].bus[0].volume = 0x8000;
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AXSetVoiceDeviceMix(voice, AX_DEVICE_TYPE_DRC, 0, mix_data[0]);
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AXSetVoiceDeviceMix(voice, AX_DEVICE_TYPE_TV, 0, mix_data[0]);
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float srcratio = (float)frequency / (float)AXGetInputSamplesPerSec();
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AXSetVoiceSrcRatio(voice, srcratio);
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AXSetVoiceSrcType(voice, AX_VOICE_SRC_TYPE_LINEAR);
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offs.dataType = AX_VOICE_FORMAT_LPCM8;
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offs.endOffset = length;
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offs.loopingEnabled = AX_VOICE_LOOP_DISABLED;
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offs.loopOffset = 0;
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offs.currentOffset = 0;
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offs.data = samples_copy;
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AXSetVoiceOffsets(voice, &offs);
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AXVoiceEnd(voice);
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sound->samples = samples_copy;
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sound->voice = voice;
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return sound;
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}
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free(samples_copy);
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}
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free(sound);
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}
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return NULL;
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}
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void AudioBackend_DestroySound(AudioBackend_Sound *sound)
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{
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AXFreeVoice(sound->voice);
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free(sound->samples);
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free(sound);
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}
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void AudioBackend_PlaySound(AudioBackend_Sound *sound, bool looping)
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{
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AXSetVoiceLoop(sound->voice, looping ? AX_VOICE_LOOP_ENABLED : AX_VOICE_LOOP_DISABLED);
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AXSetVoiceState(sound->voice, AX_VOICE_STATE_PLAYING);
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}
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void AudioBackend_StopSound(AudioBackend_Sound *sound)
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{
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AXSetVoiceState(sound->voice, AX_VOICE_STATE_STOPPED);
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AXSetVoiceCurrentOffset(sound->voice, 0);
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}
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void AudioBackend_RewindSound(AudioBackend_Sound *sound)
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{
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AXSetVoiceCurrentOffset(sound->voice, 0);
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}
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void AudioBackend_SetSoundFrequency(AudioBackend_Sound *sound, unsigned int frequency)
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{
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float srcratio = (float)frequency / (float)AXGetInputSamplesPerSec();
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AXSetVoiceSrcRatio(sound->voice, srcratio);
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}
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void AudioBackend_SetSoundVolume(AudioBackend_Sound *sound, long volume)
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{
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AXVoiceVeData vol = {
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.volume = (unsigned short)(0x8000 * MillibelToScale(volume)),
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};
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AXSetVoiceVe(sound->voice, &vol);
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}
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void AudioBackend_SetSoundPan(AudioBackend_Sound *sound, long pan)
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{
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static AXVoiceDeviceMixData mix_data[1][6];
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mix_data[0][0].bus[0].volume = (unsigned short)(0x8000 * MillibelToScale(-pan));
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mix_data[0][1].bus[0].volume = (unsigned short)(0x8000 * MillibelToScale(pan));
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AXSetVoiceDeviceMix(sound->voice, AX_DEVICE_TYPE_DRC, 0, mix_data[0]);
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AXSetVoiceDeviceMix(sound->voice, AX_DEVICE_TYPE_TV, 0, mix_data[0]);
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}
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void AudioBackend_SetOrganyaCallback(void (*callback)(void), unsigned int milliseconds)
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{
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(void)callback;
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(void)milliseconds;
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}
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