2004-09-08 04:16:08 +02:00
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/* the Music Player Daemon (MPD)
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2007-04-05 05:22:33 +02:00
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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2004-09-08 04:16:08 +02:00
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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2008-09-07 22:41:17 +02:00
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#include "../output_api.h"
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2004-09-08 04:16:08 +02:00
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#include <ao/ao.h>
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2008-11-25 16:10:01 +01:00
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#include <glib.h>
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#undef G_LOG_DOMAIN
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#define G_LOG_DOMAIN "ao"
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2004-09-08 04:16:08 +02:00
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2007-01-14 04:07:53 +01:00
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static int driverInitCount;
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2004-09-08 04:16:08 +02:00
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2004-10-20 18:05:13 +02:00
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typedef struct _AoData {
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2009-02-10 21:24:35 +01:00
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size_t writeSize;
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2004-10-20 18:05:13 +02:00
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int driverId;
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2006-07-20 18:02:40 +02:00
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ao_option *options;
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ao_device *device;
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2004-10-20 18:05:13 +02:00
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} AoData;
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2004-09-08 04:16:08 +02:00
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2006-08-08 04:23:21 +02:00
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static AoData *newAoData(void)
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2006-07-20 18:02:40 +02:00
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{
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2008-11-25 16:10:01 +01:00
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AoData *ret = g_malloc(sizeof(AoData));
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2004-10-20 18:05:13 +02:00
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ret->device = NULL;
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ret->options = NULL;
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2004-09-08 04:16:08 +02:00
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2004-10-20 18:05:13 +02:00
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return ret;
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}
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2008-11-25 16:17:48 +01:00
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static void audioOutputAo_error(const char *msg)
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2006-07-20 18:02:40 +02:00
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{
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2008-11-25 16:17:48 +01:00
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const char *error;
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switch (errno) {
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case AO_ENODRIVER:
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error = "No such libao driver";
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break;
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case AO_ENOTLIVE:
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error = "This driver is not a libao live device";
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break;
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case AO_EBADOPTION:
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error = "Invalid libao option";
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break;
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case AO_EOPENDEVICE:
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error = "Cannot open the libao device";
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break;
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case AO_EFAIL:
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error = "Generic libao failure";
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break;
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default:
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error = strerror(errno);
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2004-10-20 18:16:50 +02:00
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}
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2008-11-25 16:17:48 +01:00
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g_warning("%s: %s\n", msg, error);
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2004-10-20 18:16:50 +02:00
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}
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2009-01-17 20:23:27 +01:00
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static void *
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audioOutputAo_initDriver(struct audio_output *ao,
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G_GNUC_UNUSED const struct audio_format *audio_format,
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2009-01-25 16:03:49 +01:00
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const struct config_param *param)
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2004-10-28 07:14:55 +02:00
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{
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2006-07-20 18:02:40 +02:00
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ao_info *ai;
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AoData *ad = newAoData();
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2009-01-18 19:37:27 +01:00
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const char *value;
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2004-09-08 04:16:08 +02:00
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2009-01-18 19:45:51 +01:00
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ad->writeSize = config_get_block_unsigned(param, "write_size", 1024);
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2004-09-08 04:16:08 +02:00
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2006-07-20 18:02:40 +02:00
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if (driverInitCount == 0) {
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2004-10-20 18:05:13 +02:00
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ao_initialize();
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}
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driverInitCount++;
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2004-10-28 07:14:55 +02:00
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2009-01-18 19:37:27 +01:00
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value = config_get_block_string(param, "driver", "default");
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if (0 == strcmp(value, "default")) {
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2004-10-20 18:05:13 +02:00
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ad->driverId = ao_default_driver_id();
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2009-01-18 19:37:27 +01:00
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} else if ((ad->driverId = ao_driver_id(value)) < 0)
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2008-11-25 16:10:01 +01:00
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g_error("\"%s\" is not a valid ao driver at line %i\n",
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2009-01-18 19:37:27 +01:00
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value, param->line);
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2006-07-20 18:02:40 +02:00
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if ((ai = ao_driver_info(ad->driverId)) == NULL) {
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2008-11-25 16:10:01 +01:00
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g_error("problems getting driver info for device defined at line %i\n"
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"you may not have permission to the audio device\n", param->line);
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2004-09-08 04:16:08 +02:00
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}
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2008-11-25 16:10:01 +01:00
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g_debug("using ao driver \"%s\" for \"%s\"\n", ai->short_name,
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audio_output_get_name(ao));
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2004-11-02 19:31:54 +01:00
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2009-01-18 19:37:27 +01:00
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value = config_get_block_string(param, "options", NULL);
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if (value != NULL) {
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gchar **options = g_strsplit(value, ";", 0);
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2009-01-03 13:20:12 +01:00
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for (unsigned i = 0; options[i] != NULL; ++i) {
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gchar **key_value = g_strsplit(options[i], "=", 2);
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if (key_value[0] == NULL || key_value[1] == NULL)
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g_error("problems parsing options \"%s\"\n",
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options[i]);
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ao_append_option(&ad->options, key_value[0],
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key_value[1]);
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g_strfreev(key_value);
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2004-09-08 04:16:08 +02:00
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}
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2009-01-03 13:20:12 +01:00
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g_strfreev(options);
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2004-09-08 04:16:08 +02:00
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}
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2004-10-20 22:41:21 +02:00
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2008-09-24 07:20:55 +02:00
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return ad;
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2004-09-08 04:16:08 +02:00
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}
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2006-07-20 18:02:40 +02:00
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static void freeAoData(AoData * ad)
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{
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2004-10-20 19:43:16 +02:00
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ao_free_options(ad->options);
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2009-01-25 18:47:21 +01:00
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g_free(ad);
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2004-10-20 19:43:16 +02:00
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}
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2008-09-24 07:20:55 +02:00
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static void audioOutputAo_finishDriver(void *data)
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2006-07-20 18:02:40 +02:00
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{
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2008-09-24 07:20:55 +02:00
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AoData *ad = (AoData *)data;
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2004-10-20 19:43:16 +02:00
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freeAoData(ad);
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2004-09-08 04:16:08 +02:00
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2004-10-20 18:05:13 +02:00
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driverInitCount--;
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2004-09-08 04:16:08 +02:00
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2006-07-20 18:02:40 +02:00
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if (driverInitCount == 0)
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ao_shutdown();
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2004-09-08 04:16:08 +02:00
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}
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2009-01-01 18:08:29 +01:00
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static void audioOutputAo_dropBufferedAudio(G_GNUC_UNUSED void *data)
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2006-07-20 18:02:40 +02:00
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{
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2005-11-19 11:52:47 +01:00
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/* not supported by libao */
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2005-03-05 15:01:13 +01:00
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}
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2008-09-24 07:20:55 +02:00
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static void audioOutputAo_closeDevice(void *data)
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2006-07-20 18:02:40 +02:00
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{
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2008-09-24 07:20:55 +02:00
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AoData *ad = (AoData *)data;
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2004-09-08 04:16:08 +02:00
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2006-07-20 18:02:40 +02:00
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if (ad->device) {
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2004-10-20 18:05:13 +02:00
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ao_close(ad->device);
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ad->device = NULL;
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}
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2004-09-08 04:16:08 +02:00
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}
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2008-10-29 20:40:27 +01:00
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static bool
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audioOutputAo_openDevice(void *data, struct audio_format *audio_format)
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2006-07-20 18:02:40 +02:00
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{
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2004-09-08 04:16:08 +02:00
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ao_sample_format format;
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2008-09-24 07:20:55 +02:00
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AoData *ad = (AoData *)data;
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2004-09-08 04:16:08 +02:00
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2006-07-20 18:02:40 +02:00
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if (ad->device) {
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2008-09-24 07:20:55 +02:00
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audioOutputAo_closeDevice(ad);
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2004-09-08 04:16:08 +02:00
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}
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2008-12-09 07:39:24 +01:00
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/* support for 24 bit samples in libao is currently dubious,
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and until we have sorted that out, resample everything to
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16 bit */
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if (audio_format->bits > 16)
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audio_format->bits = 16;
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2008-09-24 07:20:36 +02:00
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format.bits = audio_format->bits;
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2008-10-10 14:40:54 +02:00
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format.rate = audio_format->sample_rate;
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2004-10-20 18:05:13 +02:00
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format.byte_format = AO_FMT_NATIVE;
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2008-09-24 07:20:36 +02:00
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format.channels = audio_format->channels;
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2004-09-08 04:16:08 +02:00
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2004-10-20 18:05:13 +02:00
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ad->device = ao_open_live(ad->driverId, &format, ad->options);
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2004-09-08 04:16:08 +02:00
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2008-11-25 16:18:06 +01:00
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if (ad->device == NULL) {
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audioOutputAo_error("Failed to open libao");
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2008-10-29 20:40:27 +01:00
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return false;
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2008-11-25 16:18:06 +01:00
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}
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2004-09-08 04:16:08 +02:00
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2008-10-29 20:40:27 +01:00
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return true;
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2004-09-08 04:16:08 +02:00
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}
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2008-04-12 06:15:52 +02:00
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/**
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* For whatever reason, libao wants a non-const pointer. Let's hope
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* it does not write to the buffer, and use the union deconst hack to
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* work around this API misdesign.
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*/
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static int ao_play_deconst(ao_device *device, const void *output_samples,
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uint_32 num_bytes)
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{
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union {
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const void *in;
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void *out;
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} u;
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u.in = output_samples;
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return ao_play(device, u.out, num_bytes);
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}
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2009-02-23 09:29:56 +01:00
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static size_t
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2009-02-23 09:34:26 +01:00
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audioOutputAo_play(void *data, const void *chunk, size_t size)
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2004-10-20 18:05:13 +02:00
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{
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2008-09-24 07:20:55 +02:00
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AoData *ad = (AoData *)data;
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2006-07-20 18:02:40 +02:00
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if (ad->device == NULL)
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2008-10-29 20:40:27 +01:00
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return false;
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2004-09-08 04:16:08 +02:00
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2009-02-23 09:29:56 +01:00
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if (size > ad->writeSize)
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size = ad->writeSize;
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2004-09-08 04:16:08 +02:00
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2009-02-23 09:34:26 +01:00
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if (ao_play_deconst(ad->device, chunk, size) == 0) {
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2009-02-23 09:29:56 +01:00
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audioOutputAo_error("Closing libao device due to play error");
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return 0;
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2004-09-08 04:16:08 +02:00
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}
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2009-02-23 09:29:56 +01:00
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return size;
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2004-09-08 04:16:08 +02:00
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}
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2008-09-08 11:43:38 +02:00
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const struct audio_output_plugin aoPlugin = {
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2008-09-29 15:55:17 +02:00
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.name = "ao",
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.init = audioOutputAo_initDriver,
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.finish = audioOutputAo_finishDriver,
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.open = audioOutputAo_openDevice,
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.play = audioOutputAo_play,
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.cancel = audioOutputAo_dropBufferedAudio,
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.close = audioOutputAo_closeDevice,
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2004-09-08 04:16:08 +02:00
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};
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