/* 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 "../audioOutput.h" #ifdef HAVE_AO #include "../conf.h" #include "../log.h" #include "../os_compat.h" #include <ao/ao.h> static int driverInitCount; typedef struct _AoData { int writeSize; int driverId; ao_option *options; ao_device *device; } AoData; static AoData *newAoData(void) { AoData *ret = xmalloc(sizeof(AoData)); ret->device = NULL; ret->options = NULL; return ret; } static void audioOutputAo_error(void) { if (errno == AO_ENOTLIVE) { ERROR("not a live ao device\n"); } else if (errno == AO_EOPENDEVICE) { ERROR("not able to open audio device\n"); } else if (errno == AO_EBADOPTION) { ERROR("bad driver option\n"); } } static int audioOutputAo_initDriver(AudioOutput * audioOutput, ConfigParam * param) { ao_info *ai; char *dup; char *stk1; char *stk2; char *n1; char *key; char *value; char *test; AoData *ad = newAoData(); BlockParam *blockParam; audioOutput->data = ad; if ((blockParam = getBlockParam(param, "write_size"))) { ad->writeSize = strtol(blockParam->value, &test, 10); if (*test != '\0') { FATAL("\"%s\" is not a valid write size at line %i\n", blockParam->value, blockParam->line); } } else ad->writeSize = 1024; if (driverInitCount == 0) { ao_initialize(); } driverInitCount++; blockParam = getBlockParam(param, "driver"); if (!blockParam || 0 == strcmp(blockParam->value, "default")) { ad->driverId = ao_default_driver_id(); } else if ((ad->driverId = ao_driver_id(blockParam->value)) < 0) { FATAL("\"%s\" is not a valid ao driver at line %i\n", blockParam->value, blockParam->line); } if ((ai = ao_driver_info(ad->driverId)) == NULL) { FATAL("problems getting driver info for device defined at line %i\n" "you may not have permission to the audio device\n", param->line); } DEBUG("using ao driver \"%s\" for \"%s\"\n", ai->short_name, audioOutput->name); blockParam = getBlockParam(param, "options"); if (blockParam) { dup = xstrdup(blockParam->value); } else dup = xstrdup(""); if (strlen(dup)) { stk1 = NULL; n1 = strtok_r(dup, ";", &stk1); while (n1) { stk2 = NULL; key = strtok_r(n1, "=", &stk2); if (!key) FATAL("problems parsing options \"%s\"\n", n1); /*found = 0; for(i=0;i<ai->option_count;i++) { if(strcmp(ai->options[i],key)==0) { found = 1; break; } } if(!found) { FATAL("\"%s\" is not an option for " "\"%s\" ao driver\n",key, ai->short_name); } */ value = strtok_r(NULL, "", &stk2); if (!value) FATAL("problems parsing options \"%s\"\n", n1); ao_append_option(&ad->options, key, value); n1 = strtok_r(NULL, ";", &stk1); } } free(dup); return 0; } static void freeAoData(AoData * ad) { ao_free_options(ad->options); free(ad); } static void audioOutputAo_finishDriver(AudioOutput * audioOutput) { AoData *ad = (AoData *) audioOutput->data; freeAoData(ad); driverInitCount--; if (driverInitCount == 0) ao_shutdown(); } static void audioOutputAo_dropBufferedAudio(AudioOutput * audioOutput) { /* not supported by libao */ } static void audioOutputAo_closeDevice(AudioOutput * audioOutput) { AoData *ad = (AoData *) audioOutput->data; if (ad->device) { ao_close(ad->device); ad->device = NULL; } audioOutput->open = 0; } static int audioOutputAo_openDevice(AudioOutput * audioOutput) { ao_sample_format format; AoData *ad = (AoData *) audioOutput->data; if (ad->device) { audioOutputAo_closeDevice(audioOutput); } format.bits = audioOutput->outAudioFormat.bits; format.rate = audioOutput->outAudioFormat.sampleRate; format.byte_format = AO_FMT_NATIVE; format.channels = audioOutput->outAudioFormat.channels; ad->device = ao_open_live(ad->driverId, &format, ad->options); if (ad->device == NULL) return -1; audioOutput->open = 1; return 0; } static int audioOutputAo_play(AudioOutput * audioOutput, char *playChunk, int size) { int send; AoData *ad = (AoData *) audioOutput->data; if (ad->device == NULL) return -1; while (size > 0) { send = ad->writeSize > size ? size : ad->writeSize; if (ao_play(ad->device, playChunk, send) == 0) { audioOutputAo_error(); ERROR("closing audio device due to write error\n"); audioOutputAo_closeDevice(audioOutput); return -1; } playChunk += send; size -= send; } return 0; } AudioOutputPlugin aoPlugin = { "ao", NULL, audioOutputAo_initDriver, audioOutputAo_finishDriver, audioOutputAo_openDevice, audioOutputAo_play, audioOutputAo_dropBufferedAudio, audioOutputAo_closeDevice, NULL, /* sendMetadataFunc */ }; #else DISABLED_AUDIO_OUTPUT_PLUGIN(aoPlugin) #endif