/* * QEMU OS X CoreAudio audio driver * * Copyright (c) 2005 Mike Kronenberg * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include <CoreAudio/CoreAudio.h> #include <string.h> /* strerror */ #include <pthread.h> /* pthread_X */ #include "vl.h" #define AUDIO_CAP "coreaudio" #include "audio_int.h" struct { int buffer_frames; int nbuffers; int isAtexit; } conf = { .buffer_frames = 512, .nbuffers = 4, .isAtexit = 0 }; typedef struct coreaudioVoiceOut { HWVoiceOut hw; pthread_mutex_t mutex; int isAtexit; AudioDeviceID outputDeviceID; UInt32 audioDevicePropertyBufferFrameSize; AudioStreamBasicDescription outputStreamBasicDescription; int live; int decr; int rpos; } coreaudioVoiceOut; static void coreaudio_logstatus (OSStatus status) { char *str = "BUG"; switch(status) { case kAudioHardwareNoError: str = "kAudioHardwareNoError"; break; case kAudioHardwareNotRunningError: str = "kAudioHardwareNotRunningError"; break; case kAudioHardwareUnspecifiedError: str = "kAudioHardwareUnspecifiedError"; break; case kAudioHardwareUnknownPropertyError: str = "kAudioHardwareUnknownPropertyError"; break; case kAudioHardwareBadPropertySizeError: str = "kAudioHardwareBadPropertySizeError"; break; case kAudioHardwareIllegalOperationError: str = "kAudioHardwareIllegalOperationError"; break; case kAudioHardwareBadDeviceError: str = "kAudioHardwareBadDeviceError"; break; case kAudioHardwareBadStreamError: str = "kAudioHardwareBadStreamError"; break; case kAudioHardwareUnsupportedOperationError: str = "kAudioHardwareUnsupportedOperationError"; break; case kAudioDeviceUnsupportedFormatError: str = "kAudioDeviceUnsupportedFormatError"; break; case kAudioDevicePermissionsError: str = "kAudioDevicePermissionsError"; break; default: AUD_log (AUDIO_CAP, "Reason: status code %ld\n", status); return; } AUD_log (AUDIO_CAP, "Reason: %s\n", str); } static void GCC_FMT_ATTR (2, 3) coreaudio_logerr ( OSStatus status, const char *fmt, ... ) { va_list ap; va_start (ap, fmt); AUD_log (AUDIO_CAP, fmt, ap); va_end (ap); coreaudio_logstatus (status); } static void GCC_FMT_ATTR (3, 4) coreaudio_logerr2 ( OSStatus status, const char *typ, const char *fmt, ... ) { va_list ap; AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); va_start (ap, fmt); AUD_vlog (AUDIO_CAP, fmt, ap); va_end (ap); coreaudio_logstatus (status); } static inline UInt32 isPlaying (AudioDeviceID outputDeviceID) { OSStatus status; UInt32 result = 0; UInt32 propertySize = sizeof(outputDeviceID); status = AudioDeviceGetProperty( outputDeviceID, 0, 0, kAudioDevicePropertyDeviceIsRunning, &propertySize, &result); if (status != kAudioHardwareNoError) { coreaudio_logerr(status, "Could not determine whether Device is playing\n"); } return result; } static void coreaudio_atexit (void) { conf.isAtexit = 1; } static int coreaudio_lock (coreaudioVoiceOut *core, const char *fn_name) { int err; err = pthread_mutex_lock (&core->mutex); if (err) { dolog ("Could not lock voice for %s\nReason: %s\n", fn_name, strerror (err)); return -1; } return 0; } static int coreaudio_unlock (coreaudioVoiceOut *core, const char *fn_name) { int err; err = pthread_mutex_unlock (&core->mutex); if (err) { dolog ("Could not unlock voice for %s\nReason: %s\n", fn_name, strerror (err)); return -1; } return 0; } static int coreaudio_run_out (HWVoiceOut *hw) { int live, decr; coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; if (coreaudio_lock (core, "coreaudio_run_out")) { return 0; } live = audio_pcm_hw_get_live_out (hw); if (core->decr > live) { ldebug ("core->decr %d live %d core->live %d\n", core->decr, live, core->live); } decr = audio_MIN (core->decr, live); core->decr -= decr; core->live = live - decr; hw->rpos = core->rpos; coreaudio_unlock (core, "coreaudio_run_out"); return decr; } /* callback to feed audiooutput buffer */ static OSStatus audioDeviceIOProc( AudioDeviceID inDevice, const AudioTimeStamp* inNow, const AudioBufferList* inInputData, const AudioTimeStamp* inInputTime, AudioBufferList* outOutputData, const AudioTimeStamp* inOutputTime, void* hwptr) { UInt32 frame, frameCount; float *out = outOutputData->mBuffers[0].mData; HWVoiceOut *hw = hwptr; coreaudioVoiceOut *core = (coreaudioVoiceOut *) hwptr; int rpos, live; st_sample_t *src; #ifndef FLOAT_MIXENG #ifdef RECIPROCAL const float scale = 1.f / UINT_MAX; #else const float scale = UINT_MAX; #endif #endif if (coreaudio_lock (core, "audioDeviceIOProc")) { inInputTime = 0; return 0; } frameCount = core->audioDevicePropertyBufferFrameSize; live = core->live; /* if there are not enough samples, set signal and return */ if (live < frameCount) { inInputTime = 0; coreaudio_unlock (core, "audioDeviceIOProc(empty)"); return 0; } rpos = core->rpos; src = hw->mix_buf + rpos; /* fill buffer */ for (frame = 0; frame < frameCount; frame++) { #ifdef FLOAT_MIXENG *out++ = src[frame].l; /* left channel */ *out++ = src[frame].r; /* right channel */ #else #ifdef RECIPROCAL *out++ = src[frame].l * scale; /* left channel */ *out++ = src[frame].r * scale; /* right channel */ #else *out++ = src[frame].l / scale; /* left channel */ *out++ = src[frame].r / scale; /* right channel */ #endif #endif } /* cleanup */ mixeng_clear (src, frameCount); rpos = (rpos + frameCount) % hw->samples; core->decr += frameCount; core->rpos = rpos; coreaudio_unlock (core, "audioDeviceIOProc"); return 0; } static int coreaudio_write (SWVoiceOut *sw, void *buf, int len) { return audio_pcm_sw_write (sw, buf, len); } static int coreaudio_init_out (HWVoiceOut *hw, audsettings_t *as) { OSStatus status; coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; UInt32 propertySize; int err; int bits = 8; int endianess = 0; const char *typ = "playback"; AudioValueRange frameRange; /* create mutex */ err = pthread_mutex_init(&core->mutex, NULL); if (err) { dolog("Could not create mutex\nReason: %s\n", strerror (err)); return -1; } if (as->fmt == AUD_FMT_S16 || as->fmt == AUD_FMT_U16) { bits = 16; endianess = 1; } audio_pcm_init_info ( &hw->info, as, /* Following is irrelevant actually since we do not use mixengs clipping routines */ audio_need_to_swap_endian (endianess) ); /* open default output device */ propertySize = sizeof(core->outputDeviceID); status = AudioHardwareGetProperty( kAudioHardwarePropertyDefaultOutputDevice, &propertySize, &core->outputDeviceID); if (status != kAudioHardwareNoError) { coreaudio_logerr2 (status, typ, "Could not get default output Device\n"); return -1; } if (core->outputDeviceID == kAudioDeviceUnknown) { dolog ("Could not initialize %s - Unknown Audiodevice\n", typ); return -1; } /* get minimum and maximum buffer frame sizes */ propertySize = sizeof(frameRange); status = AudioDeviceGetProperty( core->outputDeviceID, 0, 0, kAudioDevicePropertyBufferFrameSizeRange, &propertySize, &frameRange); if (status != kAudioHardwareNoError) { coreaudio_logerr2 (status, typ, "Could not get device buffer frame range\n"); return -1; } if (frameRange.mMinimum > conf.buffer_frames) { core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMinimum; dolog ("warning: Upsizing Buffer Frames to %f\n", frameRange.mMinimum); } else if (frameRange.mMaximum < conf.buffer_frames) { core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMaximum; dolog ("warning: Downsizing Buffer Frames to %f\n", frameRange.mMaximum); } else { core->audioDevicePropertyBufferFrameSize = conf.buffer_frames; } /* set Buffer Frame Size */ propertySize = sizeof(core->audioDevicePropertyBufferFrameSize); status = AudioDeviceSetProperty( core->outputDeviceID, NULL, 0, false, kAudioDevicePropertyBufferFrameSize, propertySize, &core->audioDevicePropertyBufferFrameSize); if (status != kAudioHardwareNoError) { coreaudio_logerr2 (status, typ, "Could not set device buffer frame size %ld\n", core->audioDevicePropertyBufferFrameSize); return -1; } /* get Buffer Frame Size */ propertySize = sizeof(core->audioDevicePropertyBufferFrameSize); status = AudioDeviceGetProperty( core->outputDeviceID, 0, false, kAudioDevicePropertyBufferFrameSize, &propertySize, &core->audioDevicePropertyBufferFrameSize); if (status != kAudioHardwareNoError) { coreaudio_logerr2 (status, typ, "Could not get device buffer frame size\n"); return -1; } hw->samples = conf.nbuffers * core->audioDevicePropertyBufferFrameSize; /* get StreamFormat */ propertySize = sizeof(core->outputStreamBasicDescription); status = AudioDeviceGetProperty( core->outputDeviceID, 0, false, kAudioDevicePropertyStreamFormat, &propertySize, &core->outputStreamBasicDescription); if (status != kAudioHardwareNoError) { coreaudio_logerr2 (status, typ, "Could not get Device Stream properties\n"); core->outputDeviceID = kAudioDeviceUnknown; return -1; } /* set Samplerate */ core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq; propertySize = sizeof(core->outputStreamBasicDescription); status = AudioDeviceSetProperty( core->outputDeviceID, 0, 0, 0, kAudioDevicePropertyStreamFormat, propertySize, &core->outputStreamBasicDescription); if (status != kAudioHardwareNoError) { coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n", as->freq); core->outputDeviceID = kAudioDeviceUnknown; return -1; } /* set Callback */ status = AudioDeviceAddIOProc(core->outputDeviceID, audioDeviceIOProc, hw); if (status != kAudioHardwareNoError) { coreaudio_logerr2 (status, typ, "Could not set IOProc\n"); core->outputDeviceID = kAudioDeviceUnknown; return -1; } /* start Playback */ if (!isPlaying(core->outputDeviceID)) { status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc); if (status != kAudioHardwareNoError) { coreaudio_logerr2 (status, typ, "Could not start playback\n"); AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc); core->outputDeviceID = kAudioDeviceUnknown; return -1; } } return 0; } static void coreaudio_fini_out (HWVoiceOut *hw) { OSStatus status; int err; coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; if (!conf.isAtexit) { /* stop playback */ if (isPlaying(core->outputDeviceID)) { status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc); if (status != kAudioHardwareNoError) { coreaudio_logerr (status, "Could not stop playback\n"); } } /* remove callback */ status = AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc); if (status != kAudioHardwareNoError) { coreaudio_logerr (status, "Could not remove IOProc\n"); } } core->outputDeviceID = kAudioDeviceUnknown; /* destroy mutex */ err = pthread_mutex_destroy(&core->mutex); if (err) { dolog("Could not destroy mutex\nReason: %s\n", strerror (err)); } } static int coreaudio_ctl_out (HWVoiceOut *hw, int cmd, ...) { OSStatus status; coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; switch (cmd) { case VOICE_ENABLE: /* start playback */ if (!isPlaying(core->outputDeviceID)) { status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc); if (status != kAudioHardwareNoError) { coreaudio_logerr (status, "Could not resume playback\n"); } } break; case VOICE_DISABLE: /* stop playback */ if (!conf.isAtexit) { if (isPlaying(core->outputDeviceID)) { status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc); if (status != kAudioHardwareNoError) { coreaudio_logerr (status, "Could not pause playback\n"); } } } break; } return 0; } static void *coreaudio_audio_init (void) { atexit(coreaudio_atexit); return &coreaudio_audio_init; } static void coreaudio_audio_fini (void *opaque) { (void) opaque; } static struct audio_option coreaudio_options[] = { {"BUFFER_SIZE", AUD_OPT_INT, &conf.buffer_frames, "Size of the buffer in frames", NULL, 0}, {"BUFFER_COUNT", AUD_OPT_INT, &conf.nbuffers, "Number of buffers", NULL, 0}, {NULL, 0, NULL, NULL, NULL, 0} }; static struct audio_pcm_ops coreaudio_pcm_ops = { coreaudio_init_out, coreaudio_fini_out, coreaudio_run_out, coreaudio_write, coreaudio_ctl_out, NULL, NULL, NULL, NULL, NULL }; struct audio_driver coreaudio_audio_driver = { INIT_FIELD (name = ) "coreaudio", INIT_FIELD (descr = ) "CoreAudio http://developer.apple.com/audio/coreaudio.html", INIT_FIELD (options = ) coreaudio_options, INIT_FIELD (init = ) coreaudio_audio_init, INIT_FIELD (fini = ) coreaudio_audio_fini, INIT_FIELD (pcm_ops = ) &coreaudio_pcm_ops, INIT_FIELD (can_be_default = ) 1, INIT_FIELD (max_voices_out = ) 1, INIT_FIELD (max_voices_in = ) 0, INIT_FIELD (voice_size_out = ) sizeof (coreaudioVoiceOut), INIT_FIELD (voice_size_in = ) 0 };