oysteikt/mpd
0
0
Fork 0
Code Issues Pull Requests Releases Activity

some potential optimizations for OS X

Browse Source 
git-svn-id: https://svn.musicpd.org/mpd/trunk@3105 09075e82-0dd4-0310-85a5-a0d7c8717e4f
This commit is contained in:
Warren Dukes 2005-03-20 21:08:24 +00:00
parent 9297ae7fce
commit cd03365fee
1 changed files with 56 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

83
src/audioOutputs/audioOutput_osx.c
View File

@ -25,6 +25,7 @@
#include <pthread.h>
#include "../log.h"
#include "../utils.h"
typedef struct _OsxData {
AudioUnit au;
@ -34,7 +35,6 @@ typedef struct _OsxData {
int bufferSize;
int pos;
int len;
int go;
int started;
} OsxData;
@ -46,7 +46,6 @@ static OsxData * newOsxData() {
ret->pos = 0;
ret->len = 0;
ret->go = 0;
ret->started = 0;
ret->buffer = NULL;
ret->bufferSize = 0;
@ -104,7 +103,6 @@ static void osx_dropBufferedAudio(AudioOutput * audioOutput) {
pthread_mutex_lock(&od->mutex);
od->len = 0;
od->go = 0;
pthread_mutex_unlock(&od->mutex);
}
@ -112,7 +110,6 @@ static void osx_closeDevice(AudioOutput * audioOutput) {
OsxData * od = (OsxData *) audioOutput->data;
pthread_mutex_lock(&od->mutex);
od->go = 0;
while(od->len) {
pthread_cond_wait(&od->condition, &od->mutex);
}
@ -141,18 +138,42 @@ static OSStatus osx_render(void * vdata,
int bytesToCopy;
int curpos = 0;
pthread_mutex_lock(&od->mutex);
while((od->go || od->len) && bufferSize) {
while(od->go && od->len < bufferSize &&
od->len < od->bufferSize)
{
pthread_cond_signal(&od->condition);
pthread_cond_wait(&od->condition, &od->mutex);
/*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;
bufferSize = bytesToCopy;
od->len -= bytesToCopy;
if(od->pos+bytesToCopy > od->bufferSize) {
@ -168,13 +189,18 @@ static OSStatus osx_render(void * vdata,
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);
}
buffer->mDataByteSize -= bufferSize;
pthread_cond_signal(&od->condition);
pthread_mutex_unlock(&od->mutex);
//DEBUG("osx_render: leave\n");
return 0;
}
@ -260,8 +286,9 @@ static int osx_play(AudioOutput * audioOutput, char * playChunk, int size) {
int bytesToCopy;
int curpos;
//DEBUG("osx_play: enter\n");
if(!od->started) {
od->go = 1;
od->started = 1;
int err = AudioOutputUnitStart(od->au);
if(err) {
@ -272,12 +299,15 @@ static int osx_play(AudioOutput * audioOutput, char * playChunk, int size) {
pthread_mutex_lock(&od->mutex);
curpos = od->pos+od->len;
if(curpos >= od->bufferSize) curpos -= od->bufferSize;
while(size) {
while(od->len >= od->bufferSize) {
pthread_cond_signal(&od->condition);
//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);
}
@ -298,12 +328,11 @@ static int osx_play(AudioOutput * audioOutput, char * playChunk, int size) {
curpos += bytesToCopy;
playChunk += bytesToCopy;
if(curpos >= od->bufferSize) curpos = 0;
}
pthread_cond_signal(&od->condition);
//DEBUG("osx_play: unlock\n");
pthread_mutex_unlock(&od->mutex);
//DEBUG("osx_play: leave\n");
return 0;
}