276 lines
5.7 KiB
C++
276 lines
5.7 KiB
C++
/*
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* audio_macosx.cpp - Audio support, implementation Mac OS X
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* Copyright (C) 2006, Daniel Sumorok
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*
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* Basilisk II (C) 1997-2008 Christian Bauer
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*
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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; either version 2 of the License, or
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* (at your option) any later version.
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*
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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 for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef USE_SDL_AUDIO
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#include "sysdeps.h"
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <pthread.h>
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#include <semaphore.h>
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#include "cpu_emulation.h"
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#include "main.h"
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#include "prefs.h"
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#include "user_strings.h"
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#include "audio.h"
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#include "audio_defs.h"
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#include "MacOSX_sound_if.h"
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#define DEBUG 0
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#include "debug.h"
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// The currently selected audio parameters (indices in
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// audio_sample_rates[] etc. vectors)
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static int audio_sample_rate_index = 0;
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static int audio_sample_size_index = 0;
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static int audio_channel_count_index = 0;
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// Prototypes
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static OSXsoundOutput *soundOutput = NULL;
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static bool main_mute = false;
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static bool speaker_mute = false;
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/*
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* Initialization
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*/
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static int audioInt(void);
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static bool open_audio(void)
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{
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AudioStatus.sample_rate = audio_sample_rates[audio_sample_rate_index];
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AudioStatus.sample_size = audio_sample_sizes[audio_sample_size_index];
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AudioStatus.channels = audio_channel_counts[audio_channel_count_index];
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if (soundOutput)
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delete soundOutput;
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soundOutput = new OSXsoundOutput();
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soundOutput->start(AudioStatus.sample_size, AudioStatus.channels,
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AudioStatus.sample_rate >> 16);
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soundOutput->setCallback(audioInt);
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audio_frames_per_block = soundOutput->bufferSizeFrames();
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audio_open = true;
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return true;
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}
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void AudioInit(void)
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{
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// Sound disabled in prefs? Then do nothing
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if (PrefsFindBool("nosound"))
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return;
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//audio_sample_sizes.push_back(8);
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audio_sample_sizes.push_back(16);
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audio_channel_counts.push_back(1);
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audio_channel_counts.push_back(2);
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audio_sample_rates.push_back(11025 << 16);
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audio_sample_rates.push_back(22050 << 16);
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audio_sample_rates.push_back(44100 << 16);
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// Default to highest supported values
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audio_sample_rate_index = audio_sample_rates.size() - 1;
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audio_sample_size_index = audio_sample_sizes.size() - 1;
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audio_channel_count_index = audio_channel_counts.size() - 1;
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AudioStatus.mixer = 0;
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AudioStatus.num_sources = 0;
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audio_component_flags = cmpWantsRegisterMessage | kStereoOut | k16BitOut;
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audio_component_flags = 0;
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open_audio();
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}
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/*
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* Deinitialization
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*/
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static void close_audio(void)
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{
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D(bug("Closing Audio\n"));
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if (soundOutput)
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{
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delete soundOutput;
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soundOutput = NULL;
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}
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audio_open = false;
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}
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void AudioExit(void)
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{
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// Close audio device
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close_audio();
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}
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/*
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* First source added, start audio stream
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*/
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void audio_enter_stream()
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{
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// Streaming thread is always running to avoid clicking noises
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}
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/*
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* Last source removed, stop audio stream
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*/
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void audio_exit_stream()
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{
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// Streaming thread is always running to avoid clicking noises
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}
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/*
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* MacOS audio interrupt, read next data block
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*/
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void AudioInterrupt(void)
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{
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D(bug("AudioInterrupt\n"));
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uint32 apple_stream_info;
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uint32 numSamples;
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int16 *p;
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M68kRegisters r;
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if (!AudioStatus.mixer)
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{
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numSamples = 0;
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soundOutput->sendAudioBuffer((void *)p, (int)numSamples);
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D(bug("AudioInterrupt done\n"));
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return;
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}
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// Get data from apple mixer
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r.a[0] = audio_data + adatStreamInfo;
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r.a[1] = AudioStatus.mixer;
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Execute68k(audio_data + adatGetSourceData, &r);
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D(bug(" GetSourceData() returns %08lx\n", r.d[0]));
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apple_stream_info = ReadMacInt32(audio_data + adatStreamInfo);
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if (apple_stream_info && (main_mute == false) && (speaker_mute == false))
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{
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numSamples = ReadMacInt32(apple_stream_info + scd_sampleCount);
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p = (int16 *)Mac2HostAddr(ReadMacInt32(apple_stream_info + scd_buffer));
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}
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else
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{
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numSamples = 0;
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p = NULL;
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}
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soundOutput->sendAudioBuffer((void *)p, (int)numSamples);
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D(bug("AudioInterrupt done\n"));
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}
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/*
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* Set sampling parameters
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* "index" is an index into the audio_sample_rates[] etc. vectors
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* It is guaranteed that AudioStatus.num_sources == 0
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*/
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bool audio_set_sample_rate(int index)
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{
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close_audio();
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audio_sample_rate_index = index;
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return open_audio();
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}
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bool audio_set_sample_size(int index)
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{
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close_audio();
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audio_sample_size_index = index;
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return open_audio();
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}
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bool audio_set_channels(int index)
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{
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close_audio();
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audio_channel_count_index = index;
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return open_audio();
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}
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/*
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* Get/set volume controls (volume values received/returned have the
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* left channel volume in the upper 16 bits and the right channel
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* volume in the lower 16 bits; both volumes are 8.8 fixed point
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* values with 0x0100 meaning "maximum volume"))
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*/
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bool audio_get_main_mute(void)
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{
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return main_mute;
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}
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uint32 audio_get_main_volume(void)
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{
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return 0x01000100;
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}
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bool audio_get_speaker_mute(void)
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{
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return speaker_mute;
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}
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uint32 audio_get_speaker_volume(void)
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{
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return 0x01000100;
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}
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void audio_set_main_mute(bool mute)
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{
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main_mute = mute;
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}
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void audio_set_main_volume(uint32 vol)
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{
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}
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void audio_set_speaker_mute(bool mute)
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{
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speaker_mute = mute;
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}
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void audio_set_speaker_volume(uint32 vol)
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{
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}
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static int audioInt(void)
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{
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SetInterruptFlag(INTFLAG_AUDIO);
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TriggerInterrupt();
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return 0;
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}
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#endif
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