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#include "audioOutput.h"
#include "list.h"
#include "log.h"
#include "pcm_utils.h"
#include <string.h>
#define AUDIO_OUTPUT_TYPE "type"
#define AUDIO_OUTPUT_NAME "name"
#define AUDIO_OUTPUT_FORMAT "format"
static List * audioOutputPluginList;
void loadAudioOutputPlugin(AudioOutputPlugin * audioOutputPlugin) {
if(!audioOutputPlugin->name) return;
insertInList(audioOutputPluginList, audioOutputPlugin->name,
audioOutputPlugin);
}
void unloadAudioOutputPlugin(AudioOutputPlugin * audioOutputPlugin) {
if(!audioOutputPlugin->name) return;
deleteFromList(audioOutputPluginList, audioOutputPlugin->name);
}
void initAudioOutputPlugins() {
audioOutputPluginList = makeList(NULL, 0);
}
void finishAudioOutputPlugins() {
freeList(audioOutputPluginList);
}
#define getBlockParam(name, str, force) { \
bp = getBlockParam(param, name); \
if(force && bp == NULL) { \
ERROR("couldn't find parameter \"%s\" in audio output " \
"definition begining at %i\n", \
name, param->line); \
exit(EXIT_FAILURE); \
} \
if(bp) str = bp->value; \
}
AudioOutput * newAudioOutput(ConfigParam * param) {
AudioOutput * ret = NULL;
void * data = NULL;
char * name = NULL;
char * format = NULL;
char * type = NULL;
BlockParam * bp = NULL;
AudioOutputPlugin * plugin = NULL;
ret = malloc(sizeof(AudioOutput));
ret->convertAudioFormat = 0;
ret->sameInAndOutFormats = 0;
ret->convBuffer = NULL;
ret->convBufferLen = 0;
memset(&ret->inAudioFormat, 0, sizeof(AudioFormat));
memset(&ret->outAudioFormat, 0, sizeof(AudioFormat));
memset(&ret->reqAudioFormat, 0, sizeof(AudioFormat));
if(param) {
getBlockParam(AUDIO_OUTPUT_NAME, name, 1);
getBlockParam(AUDIO_OUTPUT_TYPE, type, 1);
getBlockParam(AUDIO_OUTPUT_FORMAT, format, 0);
if(!findInList(audioOutputPluginList, type, &data)) {
ERROR("couldn't find audio output plugin for type "
"\"%s\" at line %i\n", type,
param->line);
exit(EXIT_FAILURE);
}
plugin = (AudioOutputPlugin *) data;
if(format) {
ret->convertAudioFormat = 1;
if(0 != parseAudioConfig(&ret->reqAudioFormat, format))
{
ERROR("error parsing format at line %i\n",
bp->line);
exit(EXIT_FAILURE);
}
}
}
else {
ListNode * node = audioOutputPluginList->firstNode;
WARNING("No \"%s\" defined in config file\n",
CONF_AUDIO_OUTPUT);
WARNING("Attempt to detect audio output device\n");
while(node) {
plugin = (AudioOutputPlugin *) node->data;
if(plugin->testDefaultDeviceFunc) {
WARNING("Attempting to detect a %s audio "
"device\n", plugin->name);
if(plugin->testDefaultDeviceFunc() == 0) {
WARNING("Successfully detected a %s "
"audio device\n",
plugin->name);
break;
}
}
node = node->nextNode;
}
if(!node) {
WARNING("Unable to detect an audio device\n");
return NULL;
}
name = "default detected output";
type = plugin->name;
}
ret->name = strdup(name);
ret->type = strdup(type);
ret->finishDriverFunc = plugin->finishDriverFunc;
ret->openDeviceFunc = plugin->openDeviceFunc;
ret->playFunc = plugin->playFunc;
ret->dropBufferedAudioFunc = plugin->dropBufferedAudioFunc;
ret->closeDeviceFunc = plugin->closeDeviceFunc;
ret->sendMetdataFunc = plugin->sendMetdataFunc;
ret->open = 0;
if(plugin->initDriverFunc(ret, param) != 0) {
free(ret);
ret = NULL;
}
return ret;
}
int openAudioOutput(AudioOutput * audioOutput, AudioFormat * audioFormat) {
int ret;
if(audioOutput->open) {
if(cmpAudioFormat(audioFormat, &audioOutput->inAudioFormat)
== 0)
{
return 0;
}
closeAudioOutput(audioOutput);
}
copyAudioFormat(&audioOutput->inAudioFormat, audioFormat);
if(audioOutput->convertAudioFormat) {
copyAudioFormat(&audioOutput->outAudioFormat,
&audioOutput->reqAudioFormat);
/* if sample rate is not specified - use same rate as input */
if(!audioOutput->outAudioFormat.sampleRate) {
audioOutput->outAudioFormat.sampleRate =
audioOutput->inAudioFormat.sampleRate;
}
}
else {
copyAudioFormat(&audioOutput->outAudioFormat,
&audioOutput->inAudioFormat);
/* default to 16 bit integer samples */
audioOutput->outAudioFormat.bits = 16;
audioOutput->outAudioFormat.floatSamples = 0;
}
ret = audioOutput->openDeviceFunc(audioOutput);
if(cmpAudioFormat(&audioOutput->inAudioFormat,
&audioOutput->outAudioFormat) == 0)
{
audioOutput->sameInAndOutFormats = 1;
}
else audioOutput->sameInAndOutFormats = 0;
return ret;
}
static void convertAudioFormat(AudioOutput * audioOutput, char ** chunkArgPtr,
int * sizeArgPtr)
{
int size = pcm_sizeOfOutputBufferForAudioFormatConversion(
&(audioOutput->inAudioFormat), *sizeArgPtr,
&(audioOutput->outAudioFormat));
if(size > audioOutput->convBufferLen) {
audioOutput->convBuffer =
realloc(audioOutput->convBuffer, size);
audioOutput->convBufferLen = size;
}
pcm_convertAudioFormat(&(audioOutput->inAudioFormat), *chunkArgPtr,
*sizeArgPtr, &(audioOutput->outAudioFormat),
audioOutput->convBuffer);
*sizeArgPtr = size;
*chunkArgPtr = audioOutput->convBuffer;
}
int playAudioOutput(AudioOutput * audioOutput, char * playChunk, int size) {
int ret;
if(!audioOutput->open) return -1;
if(!audioOutput->sameInAndOutFormats) {
convertAudioFormat(audioOutput, &playChunk, &size);
}
ret = audioOutput->playFunc(audioOutput, playChunk, size);
return ret;
}
void dropBufferedAudioOutput(AudioOutput * audioOutput) {
if(audioOutput->open) audioOutput->dropBufferedAudioFunc(audioOutput);
}
void closeAudioOutput(AudioOutput * audioOutput) {
if(audioOutput->open) audioOutput->closeDeviceFunc(audioOutput);
}
void finishAudioOutput(AudioOutput * audioOutput) {
closeAudioOutput(audioOutput);
audioOutput->finishDriverFunc(audioOutput);
if(audioOutput->convBuffer) free(audioOutput->convBuffer);
free(audioOutput->type);
free(audioOutput->name);
free(audioOutput);
}
void sendMetadataToAudioOutput(AudioOutput * audioOutput, MpdTag * tag) {
if(!audioOutput->sendMetdataFunc) return;
audioOutput->sendMetdataFunc(audioOutput, tag);
}
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