mirror of
https://github.com/dolphin-emu/dolphin.git
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100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
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// Copyright (C) 2003-2008 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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// This queue solution is temporary. I'll implement something more efficient later.
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#include <queue>
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#include "../Config.h"
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#include "../Globals.h"
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#include "../DSPHandler.h"
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#include "Thread.h"
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#include "Mixer.h"
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#ifdef _WIN32
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#include "../PCHW/DSoundStream.h"
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#endif
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namespace {
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Common::CriticalSection push_sync;
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// On real hardware, this fifo is much, much smaller. But timing is also tighter than under Windows, so...
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int queue_maxlength = 1024 * 8;
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std::queue<s16> sample_queue;
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} // namespace
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volatile bool mixer_HLEready = false;
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volatile int queue_size = 0;
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void Mixer(short *buffer, int numSamples, int bits, int rate, int channels)
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{
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// silence
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memset(buffer, 0, numSamples * 2 * sizeof(short));
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// first get th DTK Music
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if (g_Config.m_EnableDTKMusic)
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{
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g_dspInitialize.pGetAudioStreaming(buffer, numSamples);
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}
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//if this was called directly from the HLE, and not by timeout
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if (g_Config.m_EnableHLEAudio && (mixer_HLEready || g_Config.m_AntiGap))
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{
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IUCode* pUCode = CDSPHandler::GetInstance().GetUCode();
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if (pUCode != NULL)
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pUCode->MixAdd(buffer, numSamples);
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}
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push_sync.Enter();
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int count = 0;
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while (sample_queue.size() && count < numSamples * 2) {
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int x = buffer[count];
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short sample = sample_queue.front();
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x += sample_queue.front();
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if (x > 32767) x = 32767;
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if (x < -32767) x = -32767;
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buffer[count] = x;
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count++;
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sample_queue.pop();
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queue_size--;
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}
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push_sync.Leave();
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}
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void Mixer_PushSamples(short *buffer, int num_stereo_samples, int sample_rate) {
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// static FILE *f;
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// if (!f)
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// f = fopen("d:\\hello.raw", "wb");
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// fwrite(buffer, num_stereo_samples * 4, 1, f);
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static int fraction = 0;
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while (queue_size > queue_maxlength / 2) {
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#ifdef _WIN32
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DSound::DSound_UpdateSound();
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#endif
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Sleep(0);
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}
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push_sync.Enter();
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for (int i = 0; i < num_stereo_samples * 2; i++) {
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while (fraction < 65536) {
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sample_queue.push(buffer[i]);
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queue_size++;
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fraction += (65536ULL * sample_rate) / 48000;
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}
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fraction &= 0xFFFF;
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}
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push_sync.Leave();
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}
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