1 /*************************************************************************/ 2 /* audio_driver_xaudio2.h */ 3 /*************************************************************************/ 4 /* This file is part of: */ 5 /* GODOT ENGINE */ 6 /* https://godotengine.org */ 7 /*************************************************************************/ 8 /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ 9 /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ 10 /* */ 11 /* Permission is hereby granted, free of charge, to any person obtaining */ 12 /* a copy of this software and associated documentation files (the */ 13 /* "Software"), to deal in the Software without restriction, including */ 14 /* without limitation the rights to use, copy, modify, merge, publish, */ 15 /* distribute, sublicense, and/or sell copies of the Software, and to */ 16 /* permit persons to whom the Software is furnished to do so, subject to */ 17 /* the following conditions: */ 18 /* */ 19 /* The above copyright notice and this permission notice shall be */ 20 /* included in all copies or substantial portions of the Software. */ 21 /* */ 22 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ 23 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ 24 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ 25 /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ 26 /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ 27 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ 28 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ 29 /*************************************************************************/ 30 31 #ifndef AUDIO_DRIVER_XAUDIO2_H 32 #define AUDIO_DRIVER_XAUDIO2_H 33 34 #include "core/os/mutex.h" 35 #include "core/os/thread.h" 36 #include "servers/audio_server.h" 37 38 #include <mmsystem.h> 39 #include <windows.h> 40 #include <wrl/client.h> 41 #include <xaudio2.h> 42 43 class AudioDriverXAudio2 : public AudioDriver { 44 45 enum { 46 AUDIO_BUFFERS = 2 47 }; 48 49 struct XAudio2DriverVoiceCallback : public IXAudio2VoiceCallback { 50 51 HANDLE buffer_end_event; XAudio2DriverVoiceCallbackXAudio2DriverVoiceCallback52 XAudio2DriverVoiceCallback() : 53 buffer_end_event(CreateEvent(NULL, FALSE, FALSE, NULL)) {} OnBufferEndXAudio2DriverVoiceCallback54 void STDMETHODCALLTYPE OnBufferEnd(void *pBufferContext) { 55 SetEvent(buffer_end_event); 56 } 57 58 //Unused methods are stubs OnStreamEndXAudio2DriverVoiceCallback59 void STDMETHODCALLTYPE OnStreamEnd() {} OnVoiceProcessingPassEndXAudio2DriverVoiceCallback60 void STDMETHODCALLTYPE OnVoiceProcessingPassEnd() {} OnVoiceProcessingPassStartXAudio2DriverVoiceCallback61 void STDMETHODCALLTYPE OnVoiceProcessingPassStart(UINT32 SamplesRequired) {} OnBufferStartXAudio2DriverVoiceCallback62 void STDMETHODCALLTYPE OnBufferStart(void *pBufferContext) {} OnLoopEndXAudio2DriverVoiceCallback63 void STDMETHODCALLTYPE OnLoopEnd(void *pBufferContext) {} OnVoiceErrorXAudio2DriverVoiceCallback64 void STDMETHODCALLTYPE OnVoiceError(void *pBufferContext, HRESULT Error) {} 65 }; 66 67 Thread *thread; 68 Mutex *mutex; 69 70 int32_t *samples_in; 71 int16_t *samples_out[AUDIO_BUFFERS]; 72 73 static void thread_func(void *p_udata); 74 int buffer_size; 75 76 unsigned int mix_rate; 77 SpeakerMode speaker_mode; 78 79 int channels; 80 81 bool active; 82 bool thread_exited; 83 mutable bool exit_thread; 84 bool pcm_open; 85 86 WAVEFORMATEX wave_format; 87 Microsoft::WRL::ComPtr<IXAudio2> xaudio; 88 int current_buffer; 89 IXAudio2MasteringVoice *mastering_voice; 90 XAUDIO2_BUFFER xaudio_buffer[AUDIO_BUFFERS]; 91 IXAudio2SourceVoice *source_voice; 92 XAudio2DriverVoiceCallback voice_callback; 93 94 public: 95 const char *get_name() const; 96 97 virtual Error init(); 98 virtual void start(); 99 virtual int get_mix_rate() const; 100 virtual SpeakerMode get_speaker_mode() const; 101 virtual float get_latency(); 102 virtual void lock(); 103 virtual void unlock(); 104 virtual void finish(); 105 106 AudioDriverXAudio2(); 107 ~AudioDriverXAudio2(); 108 }; 109 110 #endif 111