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-rw-r--r--src/output/osx_plugin.c368
1 files changed, 368 insertions, 0 deletions
diff --git a/src/output/osx_plugin.c b/src/output/osx_plugin.c
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+++ b/src/output/osx_plugin.c
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+/* 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 "../output_api.h"
+
+#ifdef HAVE_OSX
+
+#include <AudioUnit/AudioUnit.h>
+
+#include "../utils.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(struct audio_output *audioOutput,
+ mpd_unused const struct audio_format *audio_format,
+ 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(struct audio_output *audioOutput)
+{
+ OsxData *od = (OsxData *) audioOutput->data;
+ freeOsxData(od);
+}
+
+static void osx_dropBufferedAudio(struct audio_output *audioOutput)
+{
+ OsxData *od = (OsxData *) audioOutput->data;
+
+ pthread_mutex_lock(&od->mutex);
+ od->len = 0;
+ pthread_mutex_unlock(&od->mutex);
+}
+
+static void osx_closeDevice(struct audio_output *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);
+}
+
+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(struct audio_output *audioOutput,
+ struct audio_format *audioFormat)
+{
+ OsxData *od = (OsxData *) audioOutput->data;
+ ComponentDescription desc;
+ Component comp;
+ AURenderCallbackStruct callback;
+ 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->sample_rate;
+ streamDesc.mFormatID = kAudioFormatLinearPCM;
+ streamDesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
+#ifdef WORDS_BIGENDIAN
+ streamDesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
+#endif
+
+ streamDesc.mBytesPerPacket = audio_format_frame_size(audioFormat);
+ 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->sample_rate) *
+ audio_format_frame_size(audioFormat);
+ od->buffer = xrealloc(od->buffer, od->bufferSize);
+
+ od->pos = 0;
+ od->len = 0;
+
+ return 0;
+}
+
+static int osx_play(struct audio_output *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;
+}
+
+const struct audio_output_plugin osxPlugin = {
+ .name = "osx",
+ .test_default_device = osx_testDefault,
+ .init = osx_initDriver,
+ .finish = osx_finishDriver,
+ .open = osx_openDevice,
+ .play = osx_play,
+ .cancel = osx_dropBufferedAudio,
+ .close = osx_closeDevice,
+};
+
+#else
+
+DISABLED_AUDIO_OUTPUT_PLUGIN(osxPlugin)
+#endif