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/*
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* QEMU OS X CoreAudio audio driver
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*
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* Copyright (c) 2005 Mike Kronenberg
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <CoreAudio/CoreAudio.h> |
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#include <string.h> /* strerror */ |
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#include <pthread.h> /* pthread_X */ |
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|
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#include "vl.h" |
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#define AUDIO_CAP "coreaudio" |
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#include "audio_int.h" |
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|
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struct {
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int buffer_frames;
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int nbuffers;
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int isAtexit;
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} conf = {
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.buffer_frames = 512,
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.nbuffers = 4,
|
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.isAtexit = 0
|
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}; |
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|
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typedef struct coreaudioVoiceOut { |
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HWVoiceOut hw; |
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pthread_mutex_t mutex; |
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int isAtexit;
|
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AudioDeviceID outputDeviceID; |
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UInt32 audioDevicePropertyBufferFrameSize; |
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AudioStreamBasicDescription outputStreamBasicDescription; |
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int live;
|
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int decr;
|
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int rpos;
|
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} coreaudioVoiceOut; |
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|
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static void coreaudio_logstatus (OSStatus status) |
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{
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char *str = "BUG"; |
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|
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switch(status) {
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case kAudioHardwareNoError:
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str = "kAudioHardwareNoError";
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break;
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|
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case kAudioHardwareNotRunningError:
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str = "kAudioHardwareNotRunningError";
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break;
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|
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case kAudioHardwareUnspecifiedError:
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str = "kAudioHardwareUnspecifiedError";
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break;
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|
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case kAudioHardwareUnknownPropertyError:
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str = "kAudioHardwareUnknownPropertyError";
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break;
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|
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case kAudioHardwareBadPropertySizeError:
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str = "kAudioHardwareBadPropertySizeError";
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break;
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|
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case kAudioHardwareIllegalOperationError:
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str = "kAudioHardwareIllegalOperationError";
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break;
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|
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case kAudioHardwareBadDeviceError:
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str = "kAudioHardwareBadDeviceError";
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break;
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case kAudioHardwareBadStreamError:
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str = "kAudioHardwareBadStreamError";
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break;
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|
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case kAudioHardwareUnsupportedOperationError:
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str = "kAudioHardwareUnsupportedOperationError";
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break;
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|
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case kAudioDeviceUnsupportedFormatError:
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str = "kAudioDeviceUnsupportedFormatError";
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break;
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|
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case kAudioDevicePermissionsError:
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str = "kAudioDevicePermissionsError";
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break;
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|
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default:
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AUD_log (AUDIO_CAP, "Reason: status code %ld\n", status);
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return;
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} |
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|
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AUD_log (AUDIO_CAP, "Reason: %s\n", str);
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} |
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|
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static void GCC_FMT_ATTR (2, 3) coreaudio_logerr ( |
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OSStatus status, |
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const char *fmt, |
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... |
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) |
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{
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va_list ap; |
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|
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va_start (ap, fmt); |
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AUD_log (AUDIO_CAP, fmt, ap); |
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va_end (ap); |
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|
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coreaudio_logstatus (status); |
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} |
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|
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static void GCC_FMT_ATTR (3, 4) coreaudio_logerr2 ( |
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OSStatus status, |
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const char *typ, |
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const char *fmt, |
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... |
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) |
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{
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va_list ap; |
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|
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AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
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|
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va_start (ap, fmt); |
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AUD_vlog (AUDIO_CAP, fmt, ap); |
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va_end (ap); |
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|
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coreaudio_logstatus (status); |
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} |
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|
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static inline UInt32 isPlaying (AudioDeviceID outputDeviceID) |
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{
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OSStatus status; |
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UInt32 result = 0;
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UInt32 propertySize = sizeof(outputDeviceID);
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status = AudioDeviceGetProperty( |
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outputDeviceID, 0, 0, |
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kAudioDevicePropertyDeviceIsRunning, &propertySize, &result); |
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if (status != kAudioHardwareNoError) {
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coreaudio_logerr(status, |
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"Could not determine whether Device is playing\n");
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} |
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return result;
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} |
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|
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static void coreaudio_atexit (void) |
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{
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conf.isAtexit = 1;
|
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} |
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static int coreaudio_lock (coreaudioVoiceOut *core, const char *fn_name) |
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{
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int err;
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err = pthread_mutex_lock (&core->mutex); |
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if (err) {
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dolog ("Could not lock voice for %s\nReason: %s\n",
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fn_name, strerror (err)); |
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return -1; |
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} |
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return 0; |
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} |
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static int coreaudio_unlock (coreaudioVoiceOut *core, const char *fn_name) |
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{
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int err;
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err = pthread_mutex_unlock (&core->mutex); |
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if (err) {
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dolog ("Could not unlock voice for %s\nReason: %s\n",
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fn_name, strerror (err)); |
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return -1; |
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} |
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return 0; |
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} |
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|
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static int coreaudio_run_out (HWVoiceOut *hw) |
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{
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int live, decr;
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coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; |
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|
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if (coreaudio_lock (core, "coreaudio_run_out")) { |
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return 0; |
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} |
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|
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live = audio_pcm_hw_get_live_out (hw); |
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|
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if (core->decr > live) {
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ldebug ("core->decr %d live %d core->live %d\n",
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core->decr, |
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live, |
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core->live); |
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} |
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decr = audio_MIN (core->decr, live); |
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core->decr -= decr; |
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core->live = live - decr; |
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hw->rpos = core->rpos; |
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coreaudio_unlock (core, "coreaudio_run_out");
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return decr;
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} |
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/* callback to feed audiooutput buffer */
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static OSStatus audioDeviceIOProc(
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AudioDeviceID inDevice, |
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const AudioTimeStamp* inNow,
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const AudioBufferList* inInputData,
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const AudioTimeStamp* inInputTime,
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AudioBufferList* outOutputData, |
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const AudioTimeStamp* inOutputTime,
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void* hwptr)
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{
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UInt32 frame, frameCount; |
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float *out = outOutputData->mBuffers[0].mData; |
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HWVoiceOut *hw = hwptr; |
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coreaudioVoiceOut *core = (coreaudioVoiceOut *) hwptr; |
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int rpos, live;
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st_sample_t *src; |
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#ifndef FLOAT_MIXENG
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#ifdef RECIPROCAL
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const float scale = 1.f / UINT_MAX; |
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#else
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const float scale = UINT_MAX; |
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#endif
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#endif
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|
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if (coreaudio_lock (core, "audioDeviceIOProc")) { |
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inInputTime = 0;
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return 0; |
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} |
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frameCount = core->audioDevicePropertyBufferFrameSize; |
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live = core->live; |
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|
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/* if there are not enough samples, set signal and return */
|
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if (live < frameCount) {
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inInputTime = 0;
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coreaudio_unlock (core, "audioDeviceIOProc(empty)");
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return 0; |
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} |
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|
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rpos = core->rpos; |
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src = hw->mix_buf + rpos; |
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|
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/* fill buffer */
|
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for (frame = 0; frame < frameCount; frame++) { |
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#ifdef FLOAT_MIXENG
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*out++ = src[frame].l; /* left channel */
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*out++ = src[frame].r; /* right channel */
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#else
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#ifdef RECIPROCAL
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*out++ = src[frame].l * scale; /* left channel */
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*out++ = src[frame].r * scale; /* right channel */
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#else
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*out++ = src[frame].l / scale; /* left channel */
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*out++ = src[frame].r / scale; /* right channel */
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#endif
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#endif
|
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} |
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|
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/* cleanup */
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mixeng_clear (src, frameCount); |
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rpos = (rpos + frameCount) % hw->samples; |
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core->decr += frameCount; |
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core->rpos = rpos; |
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|
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coreaudio_unlock (core, "audioDeviceIOProc");
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return 0; |
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} |
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|
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static int coreaudio_write (SWVoiceOut *sw, void *buf, int len) |
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{
|
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return audio_pcm_sw_write (sw, buf, len);
|
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} |
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|
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static int coreaudio_init_out (HWVoiceOut *hw, audsettings_t *as) |
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{
|
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OSStatus status; |
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coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; |
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UInt32 propertySize; |
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int err;
|
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int bits = 8; |
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int endianess = 0; |
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const char *typ = "playback"; |
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AudioValueRange frameRange; |
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|
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/* create mutex */
|
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err = pthread_mutex_init(&core->mutex, NULL);
|
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if (err) {
|
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dolog("Could not create mutex\nReason: %s\n", strerror (err));
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return -1; |
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} |
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|
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if (as->fmt == AUD_FMT_S16 || as->fmt == AUD_FMT_U16) {
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bits = 16;
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endianess = 1;
|
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} |
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|
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audio_pcm_init_info ( |
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&hw->info, |
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as, |
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/* Following is irrelevant actually since we do not use
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mixengs clipping routines */
|
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audio_need_to_swap_endian (endianess) |
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); |
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|
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/* open default output device */
|
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propertySize = sizeof(core->outputDeviceID);
|
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status = AudioHardwareGetProperty( |
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kAudioHardwarePropertyDefaultOutputDevice, |
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&propertySize, |
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&core->outputDeviceID); |
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if (status != kAudioHardwareNoError) {
|
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coreaudio_logerr2 (status, typ, |
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"Could not get default output Device\n");
|
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return -1; |
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} |
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if (core->outputDeviceID == kAudioDeviceUnknown) {
|
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dolog ("Could not initialize %s - Unknown Audiodevice\n", typ);
|
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return -1; |
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} |
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|
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/* get minimum and maximum buffer frame sizes */
|
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propertySize = sizeof(frameRange);
|
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status = AudioDeviceGetProperty( |
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core->outputDeviceID, |
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0,
|
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0,
|
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kAudioDevicePropertyBufferFrameSizeRange, |
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&propertySize, |
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&frameRange); |
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if (status != kAudioHardwareNoError) {
|
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coreaudio_logerr2 (status, typ, |
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"Could not get device buffer frame range\n");
|
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return -1; |
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} |
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|
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if (frameRange.mMinimum > conf.buffer_frames) {
|
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core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMinimum; |
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dolog ("warning: Upsizing Buffer Frames to %f\n", frameRange.mMinimum);
|
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} |
| 359 |
else if (frameRange.mMaximum < conf.buffer_frames) { |
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core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMaximum; |
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dolog ("warning: Downsizing Buffer Frames to %f\n", frameRange.mMaximum);
|
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} |
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else {
|
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core->audioDevicePropertyBufferFrameSize = conf.buffer_frames; |
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} |
| 366 |
|
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/* set Buffer Frame Size */
|
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propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
|
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status = AudioDeviceSetProperty( |
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core->outputDeviceID, |
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NULL,
|
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0,
|
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false,
|
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kAudioDevicePropertyBufferFrameSize, |
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propertySize, |
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&core->audioDevicePropertyBufferFrameSize); |
| 377 |
if (status != kAudioHardwareNoError) {
|
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coreaudio_logerr2 (status, typ, |
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"Could not set device buffer frame size %ld\n",
|
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core->audioDevicePropertyBufferFrameSize); |
| 381 |
return -1; |
| 382 |
} |
| 383 |
|
| 384 |
/* get Buffer Frame Size */
|
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propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
|
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status = AudioDeviceGetProperty( |
| 387 |
core->outputDeviceID, |
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0,
|
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false,
|
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kAudioDevicePropertyBufferFrameSize, |
| 391 |
&propertySize, |
| 392 |
&core->audioDevicePropertyBufferFrameSize); |
| 393 |
if (status != kAudioHardwareNoError) {
|
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coreaudio_logerr2 (status, typ, |
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"Could not get device buffer frame size\n");
|
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return -1; |
| 397 |
} |
| 398 |
hw->samples = conf.nbuffers * core->audioDevicePropertyBufferFrameSize; |
| 399 |
|
| 400 |
/* get StreamFormat */
|
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propertySize = sizeof(core->outputStreamBasicDescription);
|
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status = AudioDeviceGetProperty( |
| 403 |
core->outputDeviceID, |
| 404 |
0,
|
| 405 |
false,
|
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kAudioDevicePropertyStreamFormat, |
| 407 |
&propertySize, |
| 408 |
&core->outputStreamBasicDescription); |
| 409 |
if (status != kAudioHardwareNoError) {
|
| 410 |
coreaudio_logerr2 (status, typ, |
| 411 |
"Could not get Device Stream properties\n");
|
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core->outputDeviceID = kAudioDeviceUnknown; |
| 413 |
return -1; |
| 414 |
} |
| 415 |
|
| 416 |
/* set Samplerate */
|
| 417 |
core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq; |
| 418 |
propertySize = sizeof(core->outputStreamBasicDescription);
|
| 419 |
status = AudioDeviceSetProperty( |
| 420 |
core->outputDeviceID, |
| 421 |
0,
|
| 422 |
0,
|
| 423 |
0,
|
| 424 |
kAudioDevicePropertyStreamFormat, |
| 425 |
propertySize, |
| 426 |
&core->outputStreamBasicDescription); |
| 427 |
if (status != kAudioHardwareNoError) {
|
| 428 |
coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n",
|
| 429 |
as->freq); |
| 430 |
core->outputDeviceID = kAudioDeviceUnknown; |
| 431 |
return -1; |
| 432 |
} |
| 433 |
|
| 434 |
/* set Callback */
|
| 435 |
status = AudioDeviceAddIOProc(core->outputDeviceID, audioDeviceIOProc, hw); |
| 436 |
if (status != kAudioHardwareNoError) {
|
| 437 |
coreaudio_logerr2 (status, typ, "Could not set IOProc\n");
|
| 438 |
core->outputDeviceID = kAudioDeviceUnknown; |
| 439 |
return -1; |
| 440 |
} |
| 441 |
|
| 442 |
/* start Playback */
|
| 443 |
if (!isPlaying(core->outputDeviceID)) {
|
| 444 |
status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc); |
| 445 |
if (status != kAudioHardwareNoError) {
|
| 446 |
coreaudio_logerr2 (status, typ, "Could not start playback\n");
|
| 447 |
AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc); |
| 448 |
core->outputDeviceID = kAudioDeviceUnknown; |
| 449 |
return -1; |
| 450 |
} |
| 451 |
} |
| 452 |
|
| 453 |
return 0; |
| 454 |
} |
| 455 |
|
| 456 |
static void coreaudio_fini_out (HWVoiceOut *hw) |
| 457 |
{
|
| 458 |
OSStatus status; |
| 459 |
int err;
|
| 460 |
coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; |
| 461 |
|
| 462 |
if (!conf.isAtexit) {
|
| 463 |
/* stop playback */
|
| 464 |
if (isPlaying(core->outputDeviceID)) {
|
| 465 |
status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc); |
| 466 |
if (status != kAudioHardwareNoError) {
|
| 467 |
coreaudio_logerr (status, "Could not stop playback\n");
|
| 468 |
} |
| 469 |
} |
| 470 |
|
| 471 |
/* remove callback */
|
| 472 |
status = AudioDeviceRemoveIOProc(core->outputDeviceID, |
| 473 |
audioDeviceIOProc); |
| 474 |
if (status != kAudioHardwareNoError) {
|
| 475 |
coreaudio_logerr (status, "Could not remove IOProc\n");
|
| 476 |
} |
| 477 |
} |
| 478 |
core->outputDeviceID = kAudioDeviceUnknown; |
| 479 |
|
| 480 |
/* destroy mutex */
|
| 481 |
err = pthread_mutex_destroy(&core->mutex); |
| 482 |
if (err) {
|
| 483 |
dolog("Could not destroy mutex\nReason: %s\n", strerror (err));
|
| 484 |
} |
| 485 |
} |
| 486 |
|
| 487 |
static int coreaudio_ctl_out (HWVoiceOut *hw, int cmd, ...) |
| 488 |
{
|
| 489 |
OSStatus status; |
| 490 |
coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; |
| 491 |
|
| 492 |
switch (cmd) {
|
| 493 |
case VOICE_ENABLE:
|
| 494 |
/* start playback */
|
| 495 |
if (!isPlaying(core->outputDeviceID)) {
|
| 496 |
status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc); |
| 497 |
if (status != kAudioHardwareNoError) {
|
| 498 |
coreaudio_logerr (status, "Could not resume playback\n");
|
| 499 |
} |
| 500 |
} |
| 501 |
break;
|
| 502 |
|
| 503 |
case VOICE_DISABLE:
|
| 504 |
/* stop playback */
|
| 505 |
if (!conf.isAtexit) {
|
| 506 |
if (isPlaying(core->outputDeviceID)) {
|
| 507 |
status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc); |
| 508 |
if (status != kAudioHardwareNoError) {
|
| 509 |
coreaudio_logerr (status, "Could not pause playback\n");
|
| 510 |
} |
| 511 |
} |
| 512 |
} |
| 513 |
break;
|
| 514 |
} |
| 515 |
return 0; |
| 516 |
} |
| 517 |
|
| 518 |
static void *coreaudio_audio_init (void) |
| 519 |
{
|
| 520 |
atexit(coreaudio_atexit); |
| 521 |
return &coreaudio_audio_init;
|
| 522 |
} |
| 523 |
|
| 524 |
static void coreaudio_audio_fini (void *opaque) |
| 525 |
{
|
| 526 |
(void) opaque;
|
| 527 |
} |
| 528 |
|
| 529 |
static struct audio_option coreaudio_options[] = { |
| 530 |
{"BUFFER_SIZE", AUD_OPT_INT, &conf.buffer_frames,
|
| 531 |
"Size of the buffer in frames", NULL, 0}, |
| 532 |
{"BUFFER_COUNT", AUD_OPT_INT, &conf.nbuffers,
|
| 533 |
"Number of buffers", NULL, 0}, |
| 534 |
{NULL, 0, NULL, NULL, NULL, 0}
|
| 535 |
}; |
| 536 |
|
| 537 |
static struct audio_pcm_ops coreaudio_pcm_ops = { |
| 538 |
coreaudio_init_out, |
| 539 |
coreaudio_fini_out, |
| 540 |
coreaudio_run_out, |
| 541 |
coreaudio_write, |
| 542 |
coreaudio_ctl_out, |
| 543 |
|
| 544 |
NULL,
|
| 545 |
NULL,
|
| 546 |
NULL,
|
| 547 |
NULL,
|
| 548 |
NULL
|
| 549 |
}; |
| 550 |
|
| 551 |
struct audio_driver coreaudio_audio_driver = {
|
| 552 |
INIT_FIELD (name = ) "coreaudio",
|
| 553 |
INIT_FIELD (descr = ) |
| 554 |
"CoreAudio http://developer.apple.com/audio/coreaudio.html",
|
| 555 |
INIT_FIELD (options = ) coreaudio_options, |
| 556 |
INIT_FIELD (init = ) coreaudio_audio_init, |
| 557 |
INIT_FIELD (fini = ) coreaudio_audio_fini, |
| 558 |
INIT_FIELD (pcm_ops = ) &coreaudio_pcm_ops, |
| 559 |
INIT_FIELD (can_be_default = ) 1,
|
| 560 |
INIT_FIELD (max_voices_out = ) 1,
|
| 561 |
INIT_FIELD (max_voices_in = ) 0,
|
| 562 |
INIT_FIELD (voice_size_out = ) sizeof (coreaudioVoiceOut),
|
| 563 |
INIT_FIELD (voice_size_in = ) 0
|
| 564 |
}; |