100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
|
// Copyright (C) 2003-2008 Dolphin Project.
|
||
|
|
|
||
|
|
// This program is free software: you can redistribute it and/or modify
|
||
|
|
// it under the terms of the GNU General Public License as published by
|
||
|
|
// the Free Software Foundation, version 2.0.
|
||
|
|
|
||
|
|
// This program is distributed in the hope that it will be useful,
|
||
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
// GNU General Public License 2.0 for more details.
|
||
|
|
|
||
|
|
// A copy of the GPL 2.0 should have been included with the program.
|
||
|
|
// If not, see http://www.gnu.org/licenses/
|
||
|
|
|
||
|
|
// Official SVN repository and contact information can be found at
|
||
|
|
// http://code.google.com/p/dolphin-emu/
|
||
|
|
|
||
|
|
// This queue solution is temporary. I'll implement something more efficient later.
|
||
|
|
|
||
|
|
#include <queue>
|
||
|
|
#include "../Config.h"
|
||
|
|
#include "../Globals.h"
|
||
|
|
#include "../DSPHandler.h"
|
||
|
|
#include "Thread.h"
|
||
|
|
#include "Mixer.h"
|
||
|
|
#ifdef _WIN32
|
||
|
|
#include "../PCHW/DSoundStream.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
Common::CriticalSection push_sync;
|
||
|
|
|
||
|
|
// On real hardware, this fifo is much, much smaller. But timing is also tighter than under Windows, so...
|
||
|
|
int queue_maxlength = 1024 * 8;
|
||
|
|
std::queue<s16> sample_queue;
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
volatile bool mixer_HLEready = false;
|
||
|
|
volatile int queue_size = 0;
|
||
|
|
|
||
|
|
void Mixer(short *buffer, int numSamples, int bits, int rate, int channels)
|
||
|
|
{
|
||
|
|
// silence
|
||
|
|
memset(buffer, 0, numSamples * 2 * sizeof(short));
|
||
|
|
|
||
|
|
// first get th DTK Music
|
||
|
|
if (g_Config.m_EnableDTKMusic)
|
||
|
|
{
|
||
|
|
g_dspInitialize.pGetAudioStreaming(buffer, numSamples);
|
||
|
|
}
|
||
|
|
|
||
|
|
//if this was called directly from the HLE, and not by timeout
|
||
|
|
if (g_Config.m_EnableHLEAudio && (mixer_HLEready || g_Config.m_AntiGap))
|
||
|
|
{
|
||
|
|
IUCode* pUCode = CDSPHandler::GetInstance().GetUCode();
|
||
|
|
if (pUCode != NULL)
|
||
|
|
pUCode->MixAdd(buffer, numSamples);
|
||
|
|
}
|
||
|
|
|
||
|
|
push_sync.Enter();
|
||
|
|
int count = 0;
|
||
|
|
while (sample_queue.size() && count < numSamples * 2) {
|
||
|
|
int x = buffer[count];
|
||
|
|
short sample = sample_queue.front();
|
||
|
|
x += sample_queue.front();
|
||
|
|
if (x > 32767) x = 32767;
|
||
|
|
if (x < -32767) x = -32767;
|
||
|
|
buffer[count] = x;
|
||
|
|
count++;
|
||
|
|
sample_queue.pop();
|
||
|
|
queue_size--;
|
||
|
|
}
|
||
|
|
push_sync.Leave();
|
||
|
|
}
|
||
|
|
|
||
|
|
void Mixer_PushSamples(short *buffer, int num_stereo_samples, int sample_rate) {
|
||
|
|
// static FILE *f;
|
||
|
|
// if (!f)
|
||
|
|
// f = fopen("d:\\hello.raw", "wb");
|
||
|
|
// fwrite(buffer, num_stereo_samples * 4, 1, f);
|
||
|
|
static int fraction = 0;
|
||
|
|
|
||
|
|
while (queue_size > queue_maxlength / 2) {
|
||
|
|
#ifdef _WIN32
|
||
|
|
DSound::DSound_UpdateSound();
|
||
|
|
#endif
|
||
|
|
Sleep(0);
|
||
|
|
}
|
||
|
|
push_sync.Enter();
|
||
|
|
for (int i = 0; i < num_stereo_samples * 2; i++) {
|
||
|
|
while (fraction < 65536) {
|
||
|
|
sample_queue.push(buffer[i]);
|
||
|
|
queue_size++;
|
||
|
|
fraction += (65536ULL * sample_rate) / 48000;
|
||
|
|
}
|
||
|
|
fraction &= 0xFFFF;
|
||
|
|
}
|
||
|
|
push_sync.Leave();
|
||
|
|
}
|