/* the Music Player Daemon (MPD) * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com) * This project's homepage is: http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "../audioOutput.h" #ifdef HAVE_OSX #include <AudioUnit/AudioUnit.h> #include "../log.h" typedef struct _OsxData { AudioUnit au; pthread_mutex_t mutex; pthread_cond_t condition; char *buffer; size_t bufferSize; size_t pos; size_t len; int started; } OsxData; static OsxData *newOsxData() { OsxData *ret = xmalloc(sizeof(OsxData)); pthread_mutex_init(&ret->mutex, NULL); pthread_cond_init(&ret->condition, NULL); ret->pos = 0; ret->len = 0; ret->started = 0; ret->buffer = NULL; ret->bufferSize = 0; return ret; } static int osx_testDefault() { /*AudioUnit au; ComponentDescription desc; Component comp; desc.componentType = kAudioUnitType_Output; desc.componentSubType = kAudioUnitSubType_Output; desc.componentManufacturer = kAudioUnitManufacturer_Apple; desc.componentFlags = 0; desc.componentFlagsMask = 0; comp = FindNextComponent(NULL, &desc); if(!comp) { ERROR("Unable to open default OS X defice\n"); return -1; } if(OpenAComponent(comp, &au) != noErr) { ERROR("Unable to open default OS X defice\n"); return -1; } CloseComponent(au); */ return 0; } static int osx_initDriver(AudioOutput * audioOutput, ConfigParam * param) { OsxData *od = newOsxData(); audioOutput->data = od; return 0; } static void freeOsxData(OsxData * od) { if (od->buffer) free(od->buffer); pthread_mutex_destroy(&od->mutex); pthread_cond_destroy(&od->condition); free(od); } static void osx_finishDriver(AudioOutput * audioOutput) { OsxData *od = (OsxData *) audioOutput->data; freeOsxData(od); } static void osx_dropBufferedAudio(AudioOutput * audioOutput) { OsxData *od = (OsxData *) audioOutput->data; pthread_mutex_lock(&od->mutex); od->len = 0; pthread_mutex_unlock(&od->mutex); } static void osx_closeDevice(AudioOutput * audioOutput) { OsxData *od = (OsxData *) audioOutput->data; pthread_mutex_lock(&od->mutex); while (od->len) { pthread_cond_wait(&od->condition, &od->mutex); } pthread_mutex_unlock(&od->mutex); if (od->started) { AudioOutputUnitStop(od->au); od->started = 0; } CloseComponent(od->au); AudioUnitUninitialize(od->au); audioOutput->open = 0; } static OSStatus osx_render(void *vdata, AudioUnitRenderActionFlags * ioActionFlags, const AudioTimeStamp * inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList * bufferList) { OsxData *od = (OsxData *) vdata; AudioBuffer *buffer = &bufferList->mBuffers[0]; size_t bufferSize = buffer->mDataByteSize; size_t bytesToCopy; int curpos = 0; /*DEBUG("osx_render: enter : %i\n", (int)bufferList->mNumberBuffers); DEBUG("osx_render: ioActionFlags: %p\n", ioActionFlags); if(ioActionFlags) { if(*ioActionFlags & kAudioUnitRenderAction_PreRender) { DEBUG("prerender\n"); } if(*ioActionFlags & kAudioUnitRenderAction_PostRender) { DEBUG("post render\n"); } if(*ioActionFlags & kAudioUnitRenderAction_OutputIsSilence) { DEBUG("post render\n"); } if(*ioActionFlags & kAudioOfflineUnitRenderAction_Preflight) { DEBUG("prefilight\n"); } if(*ioActionFlags & kAudioOfflineUnitRenderAction_Render) { DEBUG("render\n"); } if(*ioActionFlags & kAudioOfflineUnitRenderAction_Complete) { DEBUG("complete\n"); } } */ /* while(bufferSize) { DEBUG("osx_render: lock\n"); */ pthread_mutex_lock(&od->mutex); /* DEBUG("%i:%i\n", bufferSize, od->len); while(od->go && od->len < bufferSize && od->len < od->bufferSize) { DEBUG("osx_render: wait\n"); pthread_cond_wait(&od->condition, &od->mutex); } */ bytesToCopy = od->len < bufferSize ? od->len : bufferSize; bufferSize = bytesToCopy; od->len -= bytesToCopy; if (od->pos + bytesToCopy > od->bufferSize) { size_t bytes = od->bufferSize - od->pos; memcpy(buffer->mData + curpos, od->buffer + od->pos, bytes); od->pos = 0; curpos += bytes; bytesToCopy -= bytes; } memcpy(buffer->mData + curpos, od->buffer + od->pos, bytesToCopy); od->pos += bytesToCopy; curpos += bytesToCopy; if (od->pos >= od->bufferSize) od->pos = 0; /* DEBUG("osx_render: unlock\n"); */ pthread_mutex_unlock(&od->mutex); pthread_cond_signal(&od->condition); /* } */ buffer->mDataByteSize = bufferSize; if (!bufferSize) { my_usleep(1000); } /* DEBUG("osx_render: leave\n"); */ return 0; } static int osx_openDevice(AudioOutput * audioOutput) { OsxData *od = (OsxData *) audioOutput->data; ComponentDescription desc; Component comp; AURenderCallbackStruct callback; AudioFormat *audioFormat = &audioOutput->outAudioFormat; AudioStreamBasicDescription streamDesc; desc.componentType = kAudioUnitType_Output; desc.componentSubType = kAudioUnitSubType_DefaultOutput; desc.componentManufacturer = kAudioUnitManufacturer_Apple; desc.componentFlags = 0; desc.componentFlagsMask = 0; comp = FindNextComponent(NULL, &desc); if (comp == 0) { ERROR("Error finding OS X component\n"); return -1; } if (OpenAComponent(comp, &od->au) != noErr) { ERROR("Unable to open OS X component\n"); return -1; } if (AudioUnitInitialize(od->au) != 0) { CloseComponent(od->au); ERROR("Unable to initialize OS X audio unit\n"); return -1; } callback.inputProc = osx_render; callback.inputProcRefCon = od; if (AudioUnitSetProperty(od->au, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input, 0, &callback, sizeof(callback)) != 0) { AudioUnitUninitialize(od->au); CloseComponent(od->au); ERROR("unable to set callback for OS X audio unit\n"); return -1; } streamDesc.mSampleRate = audioFormat->sampleRate; streamDesc.mFormatID = kAudioFormatLinearPCM; streamDesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger; #ifdef WORDS_BIGENDIAN streamDesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian; #endif streamDesc.mBytesPerPacket = audioFormat->channels * audioFormat->bits / 8; streamDesc.mFramesPerPacket = 1; streamDesc.mBytesPerFrame = streamDesc.mBytesPerPacket; streamDesc.mChannelsPerFrame = audioFormat->channels; streamDesc.mBitsPerChannel = audioFormat->bits; if (AudioUnitSetProperty(od->au, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &streamDesc, sizeof(streamDesc)) != 0) { AudioUnitUninitialize(od->au); CloseComponent(od->au); ERROR("Unable to set format on OS X device\n"); return -1; } /* create a buffer of 1s */ od->bufferSize = (audioFormat->sampleRate) * (audioFormat->bits >> 3) * (audioFormat->channels); od->buffer = xrealloc(od->buffer, od->bufferSize); od->pos = 0; od->len = 0; audioOutput->open = 1; return 0; } static int osx_play(AudioOutput * audioOutput, const char *playChunk, size_t size) { OsxData *od = (OsxData *) audioOutput->data; size_t bytesToCopy; size_t curpos; /* DEBUG("osx_play: enter\n"); */ if (!od->started) { int err; od->started = 1; err = AudioOutputUnitStart(od->au); if (err) { ERROR("unable to start audio output: %i\n", err); return -1; } } pthread_mutex_lock(&od->mutex); while (size) { /* DEBUG("osx_play: lock\n"); */ curpos = od->pos + od->len; if (curpos >= od->bufferSize) curpos -= od->bufferSize; bytesToCopy = od->bufferSize < size ? od->bufferSize : size; while (od->len > od->bufferSize - bytesToCopy) { /* DEBUG("osx_play: wait\n"); */ pthread_cond_wait(&od->condition, &od->mutex); } bytesToCopy = od->bufferSize - od->len; bytesToCopy = bytesToCopy < size ? bytesToCopy : size; size -= bytesToCopy; od->len += bytesToCopy; if (curpos + bytesToCopy > od->bufferSize) { size_t bytes = od->bufferSize - curpos; memcpy(od->buffer + curpos, playChunk, bytes); curpos = 0; playChunk += bytes; bytesToCopy -= bytes; } memcpy(od->buffer + curpos, playChunk, bytesToCopy); curpos += bytesToCopy; playChunk += bytesToCopy; } /* DEBUG("osx_play: unlock\n"); */ pthread_mutex_unlock(&od->mutex); /* DEBUG("osx_play: leave\n"); */ return 0; } AudioOutputPlugin osxPlugin = { "osx", osx_testDefault, osx_initDriver, osx_finishDriver, osx_openDevice, osx_play, osx_dropBufferedAudio, osx_closeDevice, NULL, /* sendMetadataFunc */ }; #else DISABLED_AUDIO_OUTPUT_PLUGIN(osxPlugin) #endif