#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; getBlockParam(AUDIO_OUTPUT_NAME, name, 1); getBlockParam(AUDIO_OUTPUT_TYPE, type, 1); if(findInList(audioOutputPluginList, type, &data)) { AudioOutputPlugin * plugin = (AudioOutputPlugin *) data; ret = malloc(sizeof(AudioOutput)); 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; 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)); getBlockParam(AUDIO_OUTPUT_FORMAT, format, 0); if(format) { ret->convertAudioFormat = 1; if(0 != parseAudioConfig(&ret->reqAudioFormat, format)) { ERROR("error parsing format at line %i\n", bp->line); exit(EXIT_FAILURE); } } if(plugin->initDriverFunc(ret, param) != 0) { free(ret); ret = NULL; } } else { ERROR("couldn't find audio output plugin for type \"%s\" at " "line %i\n", type, param->line); exit(EXIT_FAILURE); } 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); } else { copyAudioFormat(&audioOutput->outAudioFormat, &audioOutput->inAudioFormat); } 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); }