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/* |
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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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|
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#include "sysdeps.h" |
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|
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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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|
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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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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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|
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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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|
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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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/* |
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* Initialization |
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*/ |
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static int audioInt(void); |
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|
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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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|
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if (soundOutput) |
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delete soundOutput; |
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|
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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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|
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audio_open = true; |
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return true; |
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} |
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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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|
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//audio_sample_sizes.push_back(8); |
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audio_sample_sizes.push_back(16); |
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|
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audio_channel_counts.push_back(1); |
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audio_channel_counts.push_back(2); |
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|
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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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|
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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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|
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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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|
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open_audio(); |
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} |
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|
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|
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/* |
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* Deinitialization |
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*/ |
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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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|
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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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|
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audio_open = false; |
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} |
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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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|
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/* |
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* First source added, start audio stream |
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*/ |
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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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|
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/* |
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* Last source removed, stop audio stream |
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*/ |
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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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|
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/* |
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* MacOS audio interrupt, read next data block |
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*/ |
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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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|
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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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|
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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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|
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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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|
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soundOutput->sendAudioBuffer((void *)p, (int)numSamples); |
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|
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D(bug("AudioInterrupt done\n")); |
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} |
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|
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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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|
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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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|
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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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|
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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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/* |
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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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|
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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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|
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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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|
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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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|
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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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|
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void audio_set_main_volume(uint32 vol) |
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{ |
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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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|
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void audio_set_speaker_volume(uint32 vol) |
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{ |
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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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} |
