forked from dolphin-emu/dolphin
9c3c7c5443
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5626 8ced0084-cf51-0410-be5f-012b33b47a6e
113 lines
2.4 KiB
C++
113 lines
2.4 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include "Common.h"
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#include "Thread.h"
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#include "PulseAudioStream.h"
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#define BUFFER_SIZE 4096
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#define BUFFER_SIZE_BYTES (BUFFER_SIZE*2*2)
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PulseAudio::PulseAudio(CMixer *mixer) : SoundStream(mixer), thread_data(0), handle(NULL)
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{
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mix_buffer = new u8[BUFFER_SIZE_BYTES];
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}
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PulseAudio::~PulseAudio()
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{
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delete [] mix_buffer;
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}
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static void *ThreadTrampoline(void *args)
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{
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reinterpret_cast<PulseAudio *>(args)->SoundLoop();
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return NULL;
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}
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bool PulseAudio::Start()
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{
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thread = new Common::Thread(&ThreadTrampoline, this);
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thread_data = 0;
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return true;
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}
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void PulseAudio::Stop()
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{
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thread_data = 1;
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delete thread;
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thread = NULL;
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}
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void PulseAudio::Update()
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{
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// don't need to do anything here.
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}
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// Called on audio thread.
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void PulseAudio::SoundLoop()
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{
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if (!PulseInit()) {
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thread_data = 2;
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return;
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}
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while (!thread_data)
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{
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int err;
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int frames_to_deliver = 512;
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m_mixer->Mix(reinterpret_cast<short *>(mix_buffer), frames_to_deliver);
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if (pa_simple_write(handle, mix_buffer, frames_to_deliver * 2 * 2, &err) < 0)
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{
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ERROR_LOG(AUDIO, "pa_simple_write fail: %s", pa_strerror(err));
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}
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}
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PulseShutdown();
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thread_data = 2;
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}
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bool PulseAudio::PulseInit()
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{
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// The Sample format to use
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static const pa_sample_spec ss = {
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PA_SAMPLE_S16LE,
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m_mixer->GetSampleRate(),
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2
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};
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int err;
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if (!(handle = pa_simple_new(NULL, "dolphin-emu", PA_STREAM_PLAYBACK, NULL,
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"emulator", &ss, NULL, NULL, &err)))
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{
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ERROR_LOG(AUDIO, "PulseAudio open error: %s\n", pa_strerror(err));
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return false;
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}
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NOTICE_LOG(AUDIO, "Pulse successfully initialized.\n");
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return true;
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}
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void PulseAudio::PulseShutdown()
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{
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if (handle != NULL)
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{
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pa_simple_free(handle);
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handle = NULL;
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}
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}
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