diff options
Diffstat (limited to 'platform/winrt/audio_driver_winrt.cpp')
| -rw-r--r-- | platform/winrt/audio_driver_winrt.cpp | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/platform/winrt/audio_driver_winrt.cpp b/platform/winrt/audio_driver_winrt.cpp new file mode 100644 index 0000000000..ff46244ac3 --- /dev/null +++ b/platform/winrt/audio_driver_winrt.cpp @@ -0,0 +1,244 @@ +/*************************************************************************/ +/* audio_driver_winrt.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#include "audio_driver_winrt.h" + +#include "globals.h" +#include "os/os.h" + +using namespace Windows::Media; +using namespace Windows::Media::Core; +using namespace Windows::Media::MediaProperties; +using namespace Windows::Media::Editing; +using namespace Windows::Foundation; + +const char * AudioDriverWinRT::get_name() const +{ + return "WinRT"; +} + +Error AudioDriverWinRT::init() { + + active = false; + thread_exited = false; + exit_thread = false; + pcm_open = false; + samples_in = NULL; + + + mix_rate = 48000; + output_format = OUTPUT_STEREO; + channels = 2; + + int latency = GLOBAL_DEF("audio/output_latency", 25); + buffer_size = nearest_power_of_2(latency * mix_rate / 1000); + + samples_in = memnew_arr(int32_t, buffer_size*channels); + for (int i = 0; i < AUDIO_BUFFERS; i++) { + samples_out[i] = memnew_arr(int16_t, buffer_size*channels); + xaudio_buffer[i].AudioBytes = buffer_size * channels * sizeof(int16_t); + xaudio_buffer[i].pAudioData = (const BYTE*)(samples_out[i]); + xaudio_buffer[i].Flags = 0; + } + + HRESULT hr; + hr = XAudio2Create(&xaudio, 0, XAUDIO2_DEFAULT_PROCESSOR); + if (hr != S_OK) { + ERR_EXPLAIN("Error creating XAudio2 engine."); + ERR_FAIL_V(ERR_UNAVAILABLE); + } + hr = xaudio->CreateMasteringVoice(&mastering_voice); + if (hr != S_OK) { + ERR_EXPLAIN("Error creating XAudio2 mastering voice."); + ERR_FAIL_V(ERR_UNAVAILABLE); + } + + wave_format.nChannels = channels; + wave_format.cbSize = 0; + wave_format.nSamplesPerSec = mix_rate; + wave_format.wFormatTag = WAVE_FORMAT_PCM; + wave_format.wBitsPerSample = 16; + wave_format.nBlockAlign = channels * wave_format.wBitsPerSample >> 3; + wave_format.nAvgBytesPerSec = mix_rate * wave_format.nBlockAlign; + + voice_callback = memnew(XAudio2DriverVoiceCallback); + + hr = xaudio->CreateSourceVoice(&source_voice, &wave_format, 0, XAUDIO2_MAX_FREQ_RATIO, voice_callback); + if (hr != S_OK) { + ERR_EXPLAIN("Error creating XAudio2 source voice. " + itos(hr)); + ERR_FAIL_V(ERR_UNAVAILABLE); + } + + mutex = Mutex::create(); + thread = Thread::create(AudioDriverWinRT::thread_func, this); + + return OK; +}; + +void AudioDriverWinRT::thread_func(void* p_udata) { + + AudioDriverWinRT* ad = (AudioDriverWinRT*)p_udata; + + uint64_t usdelay = (ad->buffer_size / float(ad->mix_rate)) * 1000000; + + while (!ad->exit_thread) { + + + if (!ad->active) { + + for (int i = 0; i < AUDIO_BUFFERS; i++) { + ad->xaudio_buffer[i].Flags = XAUDIO2_END_OF_STREAM; + } + + } else { + + ad->lock(); + + ad->audio_server_process(ad->buffer_size, ad->samples_in); + + ad->unlock(); + + for (unsigned int i = 0;i < ad->buffer_size*ad->channels;i++) { + + ad->samples_out[ad->current_buffer][i] = ad->samples_in[i] >> 16; + } + + ad->xaudio_buffer[ad->current_buffer].Flags = 0; + ad->xaudio_buffer[ad->current_buffer].AudioBytes = ad->buffer_size * ad->channels * sizeof(int16_t); + ad->xaudio_buffer[ad->current_buffer].pAudioData = (const BYTE*)(ad->samples_out[ad->current_buffer]); + ad->xaudio_buffer[ad->current_buffer].PlayBegin = 0; + ad->source_voice->SubmitSourceBuffer(&(ad->xaudio_buffer[ad->current_buffer])); + + ad->current_buffer = (ad->current_buffer + 1) % AUDIO_BUFFERS; + + XAUDIO2_VOICE_STATE state; + while (ad->source_voice->GetState(&state), state.BuffersQueued > AUDIO_BUFFERS - 1) + { + WaitForSingleObject(ad->voice_callback->buffer_end_event, INFINITE); + } + } + + }; + + ad->thread_exited = true; + +}; + +void AudioDriverWinRT::start() { + + active = true; + HRESULT hr = source_voice->Start(0); + if (hr != S_OK) { + ERR_EXPLAIN("XAudio2 start error " + itos(hr)); + ERR_FAIL(); + } +}; + +int AudioDriverWinRT::get_mix_rate() const { + + return mix_rate; +}; + +AudioDriverSW::OutputFormat AudioDriverWinRT::get_output_format() const { + + return output_format; +}; + +float AudioDriverWinRT::get_latency() { + + XAUDIO2_PERFORMANCE_DATA perf_data; + xaudio->GetPerformanceData(&perf_data); + if (perf_data.CurrentLatencyInSamples) { + return (float)(perf_data.CurrentLatencyInSamples / ((float)mix_rate)); + } else { + return 0; + } +} + +void AudioDriverWinRT::lock() { + + if (!thread || !mutex) + return; + mutex->lock(); +}; +void AudioDriverWinRT::unlock() { + + if (!thread || !mutex) + return; + mutex->unlock(); +}; + +void AudioDriverWinRT::finish() { + + if (!thread) + return; + + exit_thread = true; + Thread::wait_to_finish(thread); + + if (source_voice) { + source_voice->Stop(0); + memdelete(source_voice); + } + + if (samples_in) { + memdelete_arr(samples_in); + }; + if (samples_out[0]) { + for (int i = 0; i < AUDIO_BUFFERS; i++) { + memdelete_arr(samples_out[i]); + } + }; + + memdelete(voice_callback); + memdelete(mastering_voice); + + memdelete(thread); + if (mutex) + memdelete(mutex); + thread = NULL; +}; + +AudioDriverWinRT::AudioDriverWinRT() { + + mutex = NULL; + thread = NULL; + wave_format = { 0 }; + for (int i = 0; i < AUDIO_BUFFERS; i++) { + xaudio_buffer[i] = { 0 }; + samples_out[i] = 0; + } + current_buffer = 0; +}; + +AudioDriverWinRT::~AudioDriverWinRT() { + + +}; + + |