369 lines
9.0 KiB
C
369 lines
9.0 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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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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* 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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#include "../output_api.h"
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#ifdef HAVE_OSX
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#include <AudioUnit/AudioUnit.h>
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#include "../utils.h"
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#include "../log.h"
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typedef struct _OsxData {
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AudioUnit au;
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pthread_mutex_t mutex;
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pthread_cond_t condition;
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char *buffer;
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size_t bufferSize;
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size_t pos;
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size_t len;
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int started;
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} OsxData;
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static OsxData *newOsxData()
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{
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OsxData *ret = xmalloc(sizeof(OsxData));
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pthread_mutex_init(&ret->mutex, NULL);
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pthread_cond_init(&ret->condition, NULL);
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ret->pos = 0;
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ret->len = 0;
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ret->started = 0;
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ret->buffer = NULL;
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ret->bufferSize = 0;
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return ret;
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}
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static int osx_testDefault()
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{
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/*AudioUnit au;
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ComponentDescription desc;
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Component comp;
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desc.componentType = kAudioUnitType_Output;
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desc.componentSubType = kAudioUnitSubType_Output;
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desc.componentManufacturer = kAudioUnitManufacturer_Apple;
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desc.componentFlags = 0;
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desc.componentFlagsMask = 0;
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comp = FindNextComponent(NULL, &desc);
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if(!comp) {
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ERROR("Unable to open default OS X defice\n");
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return -1;
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}
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if(OpenAComponent(comp, &au) != noErr) {
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ERROR("Unable to open default OS X defice\n");
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return -1;
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}
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CloseComponent(au); */
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return 0;
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}
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static int osx_initDriver(struct audio_output *audioOutput,
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mpd_unused const struct audio_format *audio_format,
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ConfigParam * param)
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{
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OsxData *od = newOsxData();
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audioOutput->data = od;
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return 0;
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}
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static void freeOsxData(OsxData * od)
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{
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if (od->buffer)
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free(od->buffer);
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pthread_mutex_destroy(&od->mutex);
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pthread_cond_destroy(&od->condition);
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free(od);
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}
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static void osx_finishDriver(struct audio_output *audioOutput)
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{
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OsxData *od = (OsxData *) audioOutput->data;
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freeOsxData(od);
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}
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static void osx_dropBufferedAudio(struct audio_output *audioOutput)
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{
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OsxData *od = (OsxData *) audioOutput->data;
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pthread_mutex_lock(&od->mutex);
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od->len = 0;
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pthread_mutex_unlock(&od->mutex);
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}
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static void osx_closeDevice(struct audio_output *audioOutput)
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{
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OsxData *od = (OsxData *) audioOutput->data;
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pthread_mutex_lock(&od->mutex);
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while (od->len) {
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pthread_cond_wait(&od->condition, &od->mutex);
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}
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pthread_mutex_unlock(&od->mutex);
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if (od->started) {
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AudioOutputUnitStop(od->au);
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od->started = 0;
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}
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CloseComponent(od->au);
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AudioUnitUninitialize(od->au);
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}
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static OSStatus osx_render(void *vdata,
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AudioUnitRenderActionFlags * ioActionFlags,
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const AudioTimeStamp * inTimeStamp,
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UInt32 inBusNumber, UInt32 inNumberFrames,
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AudioBufferList * bufferList)
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{
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OsxData *od = (OsxData *) vdata;
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AudioBuffer *buffer = &bufferList->mBuffers[0];
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size_t bufferSize = buffer->mDataByteSize;
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size_t bytesToCopy;
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int curpos = 0;
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/*DEBUG("osx_render: enter : %i\n", (int)bufferList->mNumberBuffers);
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DEBUG("osx_render: ioActionFlags: %p\n", ioActionFlags);
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if(ioActionFlags) {
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if(*ioActionFlags & kAudioUnitRenderAction_PreRender) {
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DEBUG("prerender\n");
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}
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if(*ioActionFlags & kAudioUnitRenderAction_PostRender) {
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DEBUG("post render\n");
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}
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if(*ioActionFlags & kAudioUnitRenderAction_OutputIsSilence) {
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DEBUG("post render\n");
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}
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if(*ioActionFlags & kAudioOfflineUnitRenderAction_Preflight) {
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DEBUG("prefilight\n");
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}
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if(*ioActionFlags & kAudioOfflineUnitRenderAction_Render) {
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DEBUG("render\n");
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}
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if(*ioActionFlags & kAudioOfflineUnitRenderAction_Complete) {
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DEBUG("complete\n");
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}
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} */
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/* while(bufferSize) {
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DEBUG("osx_render: lock\n"); */
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pthread_mutex_lock(&od->mutex);
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/*
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DEBUG("%i:%i\n", bufferSize, od->len);
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while(od->go && od->len < bufferSize &&
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od->len < od->bufferSize)
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{
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DEBUG("osx_render: wait\n");
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pthread_cond_wait(&od->condition, &od->mutex);
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}
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*/
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bytesToCopy = od->len < bufferSize ? od->len : bufferSize;
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bufferSize = bytesToCopy;
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od->len -= bytesToCopy;
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if (od->pos + bytesToCopy > od->bufferSize) {
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size_t bytes = od->bufferSize - od->pos;
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memcpy(buffer->mData + curpos, od->buffer + od->pos, bytes);
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od->pos = 0;
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curpos += bytes;
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bytesToCopy -= bytes;
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}
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memcpy(buffer->mData + curpos, od->buffer + od->pos, bytesToCopy);
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od->pos += bytesToCopy;
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curpos += bytesToCopy;
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if (od->pos >= od->bufferSize)
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od->pos = 0;
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/* DEBUG("osx_render: unlock\n"); */
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pthread_mutex_unlock(&od->mutex);
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pthread_cond_signal(&od->condition);
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/* } */
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buffer->mDataByteSize = bufferSize;
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if (!bufferSize) {
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my_usleep(1000);
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}
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/* DEBUG("osx_render: leave\n"); */
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return 0;
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}
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static int osx_openDevice(struct audio_output *audioOutput,
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struct audio_format *audioFormat)
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{
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OsxData *od = (OsxData *) audioOutput->data;
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ComponentDescription desc;
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Component comp;
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AURenderCallbackStruct callback;
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AudioStreamBasicDescription streamDesc;
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desc.componentType = kAudioUnitType_Output;
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desc.componentSubType = kAudioUnitSubType_DefaultOutput;
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desc.componentManufacturer = kAudioUnitManufacturer_Apple;
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desc.componentFlags = 0;
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desc.componentFlagsMask = 0;
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comp = FindNextComponent(NULL, &desc);
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if (comp == 0) {
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ERROR("Error finding OS X component\n");
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return -1;
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}
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if (OpenAComponent(comp, &od->au) != noErr) {
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ERROR("Unable to open OS X component\n");
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return -1;
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}
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if (AudioUnitInitialize(od->au) != 0) {
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CloseComponent(od->au);
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ERROR("Unable to initialize OS X audio unit\n");
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return -1;
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}
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callback.inputProc = osx_render;
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callback.inputProcRefCon = od;
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if (AudioUnitSetProperty(od->au, kAudioUnitProperty_SetRenderCallback,
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kAudioUnitScope_Input, 0,
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&callback, sizeof(callback)) != 0) {
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AudioUnitUninitialize(od->au);
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CloseComponent(od->au);
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ERROR("unable to set callback for OS X audio unit\n");
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return -1;
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}
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streamDesc.mSampleRate = audioFormat->sample_rate;
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streamDesc.mFormatID = kAudioFormatLinearPCM;
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streamDesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
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#ifdef WORDS_BIGENDIAN
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streamDesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
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#endif
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streamDesc.mBytesPerPacket = audio_format_frame_size(audioFormat);
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streamDesc.mFramesPerPacket = 1;
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streamDesc.mBytesPerFrame = streamDesc.mBytesPerPacket;
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streamDesc.mChannelsPerFrame = audioFormat->channels;
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streamDesc.mBitsPerChannel = audioFormat->bits;
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if (AudioUnitSetProperty(od->au, kAudioUnitProperty_StreamFormat,
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kAudioUnitScope_Input, 0,
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&streamDesc, sizeof(streamDesc)) != 0) {
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AudioUnitUninitialize(od->au);
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CloseComponent(od->au);
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ERROR("Unable to set format on OS X device\n");
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return -1;
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}
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/* create a buffer of 1s */
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od->bufferSize = (audioFormat->sample_rate) *
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audio_format_frame_size(audioFormat);
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od->buffer = xrealloc(od->buffer, od->bufferSize);
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od->pos = 0;
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od->len = 0;
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return 0;
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}
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static int osx_play(struct audio_output *audioOutput,
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const char *playChunk, size_t size)
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{
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OsxData *od = (OsxData *) audioOutput->data;
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size_t bytesToCopy;
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size_t curpos;
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/* DEBUG("osx_play: enter\n"); */
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if (!od->started) {
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int err;
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od->started = 1;
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err = AudioOutputUnitStart(od->au);
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if (err) {
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ERROR("unable to start audio output: %i\n", err);
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return -1;
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}
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}
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pthread_mutex_lock(&od->mutex);
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while (size) {
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/* DEBUG("osx_play: lock\n"); */
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curpos = od->pos + od->len;
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if (curpos >= od->bufferSize)
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curpos -= od->bufferSize;
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bytesToCopy = od->bufferSize < size ? od->bufferSize : size;
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while (od->len > od->bufferSize - bytesToCopy) {
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/* DEBUG("osx_play: wait\n"); */
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pthread_cond_wait(&od->condition, &od->mutex);
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}
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bytesToCopy = od->bufferSize - od->len;
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bytesToCopy = bytesToCopy < size ? bytesToCopy : size;
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size -= bytesToCopy;
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od->len += bytesToCopy;
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if (curpos + bytesToCopy > od->bufferSize) {
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size_t bytes = od->bufferSize - curpos;
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memcpy(od->buffer + curpos, playChunk, bytes);
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curpos = 0;
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playChunk += bytes;
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bytesToCopy -= bytes;
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}
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memcpy(od->buffer + curpos, playChunk, bytesToCopy);
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curpos += bytesToCopy;
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playChunk += bytesToCopy;
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}
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/* DEBUG("osx_play: unlock\n"); */
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pthread_mutex_unlock(&od->mutex);
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/* DEBUG("osx_play: leave\n"); */
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return 0;
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}
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const struct audio_output_plugin osxPlugin = {
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.name = "osx",
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.test_default_device = osx_testDefault,
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.init = osx_initDriver,
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.finish = osx_finishDriver,
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.open = osx_openDevice,
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.play = osx_play,
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.cancel = osx_dropBufferedAudio,
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.close = osx_closeDevice,
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};
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#else
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DISABLED_AUDIO_OUTPUT_PLUGIN(osxPlugin)
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#endif
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