forked from dolphin-emu/dolphin
a81631b58e
the intent is to replace the haphazard scheduling and finger-crossing associated with saving/loading with the correct and minimal necessary wait for each thread to reach a known safe location before commencing the savestate operation, and for any already-paused components to not need to be resumed to do so.
121 lines
3.1 KiB
C++
121 lines
3.1 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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#ifndef _MIXER_H_
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#define _MIXER_H_
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#include "WaveFile.h"
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#include "StdMutex.h"
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// 16 bit Stereo
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#define MAX_SAMPLES (1024 * 8)
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#define INDEX_MASK (MAX_SAMPLES * 2 - 1)
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#define RESERVED_SAMPLES (256)
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class CMixer {
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public:
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CMixer(unsigned int AISampleRate = 48000, unsigned int DACSampleRate = 48000, unsigned int BackendSampleRate = 32000)
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: m_aiSampleRate(AISampleRate)
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, m_dacSampleRate(DACSampleRate)
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, m_bits(16)
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, m_channels(2)
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, m_HLEready(false)
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, m_logAudio(0)
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, m_numSamples(0)
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, m_indexW(0)
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, m_indexR(0)
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, m_AIplaying(true)
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{
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// AyuanX: The internal (Core & DSP) sample rate is fixed at 32KHz
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// So when AI/DAC sample rate differs than 32KHz, we have to do re-sampling
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m_sampleRate = BackendSampleRate;
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memset(m_buffer, 0, sizeof(m_buffer));
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INFO_LOG(AUDIO_INTERFACE, "Mixer is initialized (AISampleRate:%i, DACSampleRate:%i)", AISampleRate, DACSampleRate);
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}
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virtual ~CMixer() {}
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// Called from audio threads
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virtual unsigned int Mix(short* samples, unsigned int numSamples);
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virtual void Premix(short * /*samples*/, unsigned int /*numSamples*/) {}
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unsigned int GetNumSamples();
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// Called from main thread
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virtual void PushSamples(const short* samples, unsigned int num_samples);
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unsigned int GetSampleRate() {return m_sampleRate;}
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void SetThrottle(bool use) { m_throttle = use;}
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// TODO: do we need this
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bool IsHLEReady() { return m_HLEready;}
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void SetHLEReady(bool ready) { m_HLEready = ready;}
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// ---------------------
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virtual void StartLogAudio(const char *filename) {
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if (! m_logAudio) {
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m_logAudio = true;
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g_wave_writer.Start(filename, GetSampleRate());
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g_wave_writer.SetSkipSilence(false);
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NOTICE_LOG(DSPHLE, "Starting Audio logging");
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} else {
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WARN_LOG(DSPHLE, "Audio logging already started");
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}
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}
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virtual void StopLogAudio() {
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if (m_logAudio) {
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m_logAudio = false;
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g_wave_writer.Stop();
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NOTICE_LOG(DSPHLE, "Stopping Audio logging");
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} else {
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WARN_LOG(DSPHLE, "Audio logging already stopped");
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}
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}
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std::mutex& MixerCritical() { return m_csMixing; }
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protected:
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unsigned int m_sampleRate;
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unsigned int m_aiSampleRate;
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unsigned int m_dacSampleRate;
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int m_bits;
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int m_channels;
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WaveFileWriter g_wave_writer;
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bool m_HLEready;
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bool m_logAudio;
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bool m_throttle;
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short m_buffer[MAX_SAMPLES * 2];
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volatile u32 m_numSamples;
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u32 m_indexW;
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u32 m_indexR;
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bool m_AIplaying;
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std::mutex m_csMixing;
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private:
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};
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#endif // _MIXER_H_
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