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-rw-r--r--src/audioOutput/audioOutput_ao.c243
1 files changed, 243 insertions, 0 deletions
diff --git a/src/audioOutput/audioOutput_ao.c b/src/audioOutput/audioOutput_ao.c
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index 000000000..366c42c1d
--- /dev/null
+++ b/src/audioOutput/audioOutput_ao.c
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+/* the Music Player Daemon (MPD)
+ * (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
+ * 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"
+#include "../conf.h"
+#include "../log.h"
+#include "../sig_handlers.h"
+
+#include <string.h>
+#include <assert.h>
+#include <signal.h>
+
+#include <ao/ao.h>
+
+static int driverInitCount = 0;
+
+typedef struct _AoData {
+ int writeSize;
+ int driverId;
+ ao_option * options;
+ ao_device * device;
+} AoData;
+
+static AoData * newAoData() {
+ AoData * ret = malloc(sizeof(AoData));
+ ret->device = NULL;
+ ret->options = NULL;
+
+ return ret;
+}
+
+static void audioOutputAo_error() {
+ 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') {
+ ERROR("\"%s\" is not a valid write size at line %i\n",
+ blockParam->value, blockParam->line);
+ exit(EXIT_FAILURE);
+ }
+ }
+ 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) {
+ ERROR("\"%s\" is not a valid ao driver at line %i\n",
+ blockParam->value, blockParam->line);
+ exit(EXIT_FAILURE);
+ }
+
+ if((ai = ao_driver_info(ad->driverId))==NULL) {
+ ERROR("problems getting driver info for device defined at "
+ "line %i\n", param->line);
+ ERROR("you may not have permission to the audio device\n");
+ exit(EXIT_FAILURE);
+ }
+
+ blockParam = getBlockParam(param, "options");
+
+ if(blockParam) {
+ dup = strdup(blockParam->value);
+ }
+ else dup = strdup("");
+
+ if(strlen(dup)) {
+ stk1 = NULL;
+ n1 = strtok_r(dup,";",&stk1);
+ while(n1) {
+ stk2 = NULL;
+ key = strtok_r(n1,"=",&stk2);
+ if(!key) {
+ ERROR("problems parsing "
+ "ao_driver_options \"%s\"\n", n1);
+ exit(EXIT_FAILURE);
+ }
+ /*found = 0;
+ for(i=0;i<ai->option_count;i++) {
+ if(strcmp(ai->options[i],key)==0) {
+ found = 1;
+ break;
+ }
+ }
+ if(!found) {
+ ERROR("\"%s\" is not an option for "
+ "\"%s\" ao driver\n",key,
+ ai->short_name);
+ exit(EXIT_FAILURE);
+ }*/
+ value = strtok_r(NULL,"",&stk2);
+ if(!value) {
+ ERROR("problems parsing "
+ "ao_driver_options \"%s\"\n", n1);
+ exit(EXIT_FAILURE);
+ }
+ 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_closeDevice(AudioOutput * audioOutput) {
+ AoData * ad = (AoData *) audioOutput->data;
+
+ if(ad->device) {
+ blockSignals();
+ ao_close(ad->device);
+ ad->device = NULL;
+ unblockSignals();
+ }
+
+ audioOutput->open = 0;
+}
+
+static int audioOutputAo_openDevice(AudioOutput * audioOutput,
+ AudioFormat * audioFormat)
+{
+ ao_sample_format format;
+ AoData * ad = (AoData *)audioOutput->data;
+
+ if(ad->device) {
+ audioOutputAo_closeDevice(audioOutput);
+ }
+
+ format.bits = audioFormat->bits;
+ format.rate = audioFormat->sampleRate;
+ format.byte_format = AO_FMT_NATIVE;
+ format.channels = audioFormat->channels;
+
+ blockSignals();
+ ad->device = ao_open_live(ad->driverId, &format, ad->options);
+ unblockSignals();
+
+ 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",
+ audioOutputAo_initDriver,
+ audioOutputAo_finishDriver,
+ audioOutputAo_openDevice,
+ audioOutputAo_play,
+ audioOutputAo_closeDevice,
+ NULL /* sendMetadataFunc */
+};