c7bc44d5ad
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer with state-of-the-art rendering techniques tuned to work as low as middle end handheld devices - without compromising with the possibilities given for higher end desktop games of course. Great times ahead for the Godot community and the gamers that will play our games!
214 lines
6.1 KiB
C++
214 lines
6.1 KiB
C++
/*************************************************************************/
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/* audio_driver_rtaudio.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "audio_driver_rtaudio.h"
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#include "globals.h"
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#include "os/os.h"
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#ifdef RTAUDIO_ENABLED
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const char* AudioDriverRtAudio::get_name() const {
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#ifdef OSX_ENABLED
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return "RtAudio-OSX";
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#elif defined(UNIX_ENABLED)
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return "RtAudio-ALSA";
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#elif defined(WINDOWS_ENABLED)
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return "RtAudio-DirectSound";
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#else
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return "RtAudio-None";
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#endif
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}
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// Two-channel sawtooth wave generator.
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int AudioDriverRtAudio::callback( void *outputBuffer, void *inputBuffer, unsigned int nBufferFrames,
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double streamTime, RtAudioStreamStatus status, void *userData ) {
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if (status) {
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if (status & RTAUDIO_INPUT_OVERFLOW) {
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WARN_PRINT("RtAudio input overflow!");
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}
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if (status & RTAUDIO_OUTPUT_UNDERFLOW) {
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WARN_PRINT("RtAudio output underflow!");
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}
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}
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int32_t *buffer = (int32_t *) outputBuffer;
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AudioDriverRtAudio *self = (AudioDriverRtAudio*)userData;
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if (self->mutex->try_lock()!=OK) {
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// what should i do..
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for(unsigned int i=0;i<nBufferFrames;i++)
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buffer[i]=0;
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return 0;
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}
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self->audio_server_process(nBufferFrames,buffer);
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self->mutex->unlock();;
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return 0;
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}
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Error AudioDriverRtAudio::init() {
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active=false;
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mutex=NULL;
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dac = memnew( RtAudio );
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ERR_EXPLAIN("Cannot initialize RtAudio audio driver: No devices present.")
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ERR_FAIL_COND_V( dac->getDeviceCount() < 1, ERR_UNAVAILABLE );
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String channels = GLOBAL_DEF("audio/output","stereo");
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if (channels=="5.1")
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output_format=OUTPUT_5_1;
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else if (channels=="quad")
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output_format=OUTPUT_QUAD;
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else if (channels=="mono")
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output_format=OUTPUT_MONO;
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else
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output_format=OUTPUT_STEREO;
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RtAudio::StreamParameters parameters;
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parameters.deviceId = dac->getDefaultOutputDevice();
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RtAudio::StreamOptions options;
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// options.
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// RtAudioStreamFlags flags; /*!< A bit-mask of stream flags (RTAUDIO_NONINTERLEAVED, RTAUDIO_MINIMIZE_LATENCY, RTAUDIO_HOG_DEVICE). *///
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// unsigned int numberOfBuffers; /*!< Number of stream buffers. */
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// std::string streamName; /*!< A stream name (currently used only in Jack). */
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// int priority; /*!< Scheduling priority of callback thread (only used with flag RTAUDIO_SCHEDULE_REALTIME). */
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parameters.firstChannel = 0;
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mix_rate = GLOBAL_DEF("audio/mix_rate",44100);
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int latency = GLOBAL_DEF("audio/output_latency",25);
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unsigned int buffer_size = nearest_power_of_2( latency * mix_rate / 1000 );
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if (OS::get_singleton()->is_stdout_verbose()) {
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print_line("audio buffer size: "+itos(buffer_size));
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}
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// bool success=false;
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while( true) {
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switch(output_format) {
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case OUTPUT_MONO: parameters.nChannels = 1; break;
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case OUTPUT_STEREO: parameters.nChannels = 2; break;
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case OUTPUT_QUAD: parameters.nChannels = 4; break;
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case OUTPUT_5_1: parameters.nChannels = 6; break;
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};
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try {
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dac->openStream( ¶meters, NULL, RTAUDIO_SINT32,
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mix_rate, &buffer_size, &callback, this,&options );
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mutex = Mutex::create(true);
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active=true;
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break;
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} catch ( RtAudioError& e ) {
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// try with less channels
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ERR_PRINT("Unable to open audio, retrying with fewer channels..");
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switch(output_format) {
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case OUTPUT_MONO: ERR_EXPLAIN("Unable to open audio."); ERR_FAIL_V( ERR_UNAVAILABLE ); break;
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case OUTPUT_STEREO: output_format=OUTPUT_MONO; break;
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case OUTPUT_QUAD: output_format=OUTPUT_STEREO; break;
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case OUTPUT_5_1: output_format=OUTPUT_QUAD; break;
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};
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}
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}
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return OK;
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}
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int AudioDriverRtAudio::get_mix_rate() const {
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return mix_rate;
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}
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AudioDriverSW::OutputFormat AudioDriverRtAudio::get_output_format() const {
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return output_format;
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}
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void AudioDriverRtAudio::start() {
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if (active)
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dac->startStream();
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}
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void AudioDriverRtAudio::lock() {
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if (mutex)
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mutex->lock();
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}
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void AudioDriverRtAudio::unlock() {
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if (mutex)
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mutex->unlock();
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}
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void AudioDriverRtAudio::finish() {
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if ( active && dac->isStreamOpen() )
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dac->closeStream();
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if (mutex)
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memdelete(mutex);
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if (dac)
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memdelete(dac);
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}
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AudioDriverRtAudio::AudioDriverRtAudio()
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{
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mutex=NULL;
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mix_rate=44100;
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output_format=OUTPUT_STEREO;
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}
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#endif
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