diff options
Diffstat (limited to 'src/output/ao_plugin.c')
-rw-r--r-- | src/output/ao_plugin.c | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/src/output/ao_plugin.c b/src/output/ao_plugin.c deleted file mode 100644 index 33366d3b8..000000000 --- a/src/output/ao_plugin.c +++ /dev/null @@ -1,252 +0,0 @@ -/* - * Copyright (C) 2003-2011 The Music Player Daemon Project - * 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., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "output_api.h" - -#include <ao/ao.h> -#include <glib.h> - -#undef G_LOG_DOMAIN -#define G_LOG_DOMAIN "ao" - -/* An ao_sample_format, with all fields set to zero: */ -static const ao_sample_format OUR_AO_FORMAT_INITIALIZER; - -static unsigned ao_output_ref; - -struct ao_data { - size_t write_size; - int driver; - ao_option *options; - ao_device *device; -} AoData; - -static inline GQuark -ao_output_quark(void) -{ - return g_quark_from_static_string("ao_output"); -} - -static void -ao_output_error(GError **error_r) -{ - const char *error; - - switch (errno) { - case AO_ENODRIVER: - error = "No such libao driver"; - break; - - case AO_ENOTLIVE: - error = "This driver is not a libao live device"; - break; - - case AO_EBADOPTION: - error = "Invalid libao option"; - break; - - case AO_EOPENDEVICE: - error = "Cannot open the libao device"; - break; - - case AO_EFAIL: - error = "Generic libao failure"; - break; - - default: - error = strerror(errno); - } - - g_set_error(error_r, ao_output_quark(), errno, - "%s", error); -} - -static void * -ao_output_init(G_GNUC_UNUSED const struct audio_format *audio_format, - const struct config_param *param, - GError **error) -{ - struct ao_data *ad = g_new(struct ao_data, 1); - ao_info *ai; - const char *value; - - ad->options = NULL; - - ad->write_size = config_get_block_unsigned(param, "write_size", 1024); - - if (ao_output_ref == 0) { - ao_initialize(); - } - ao_output_ref++; - - value = config_get_block_string(param, "driver", "default"); - if (0 == strcmp(value, "default")) - ad->driver = ao_default_driver_id(); - else - ad->driver = ao_driver_id(value); - - if (ad->driver < 0) { - g_set_error(error, ao_output_quark(), 0, - "\"%s\" is not a valid ao driver", - value); - g_free(ad); - return NULL; - } - - if ((ai = ao_driver_info(ad->driver)) == NULL) { - g_set_error(error, ao_output_quark(), 0, - "problems getting driver info"); - g_free(ad); - return NULL; - } - - g_debug("using ao driver \"%s\" for \"%s\"\n", ai->short_name, - config_get_block_string(param, "name", NULL)); - - value = config_get_block_string(param, "options", NULL); - if (value != NULL) { - gchar **options = g_strsplit(value, ";", 0); - - for (unsigned i = 0; options[i] != NULL; ++i) { - gchar **key_value = g_strsplit(options[i], "=", 2); - - if (key_value[0] == NULL || key_value[1] == NULL) { - g_set_error(error, ao_output_quark(), 0, - "problems parsing options \"%s\"", - options[i]); - g_free(ad); - return NULL; - } - - ao_append_option(&ad->options, key_value[0], - key_value[1]); - - g_strfreev(key_value); - } - - g_strfreev(options); - } - - return ad; -} - -static void -ao_output_finish(void *data) -{ - struct ao_data *ad = (struct ao_data *)data; - - ao_free_options(ad->options); - g_free(ad); - - ao_output_ref--; - - if (ao_output_ref == 0) - ao_shutdown(); -} - -static void -ao_output_close(void *data) -{ - struct ao_data *ad = (struct ao_data *)data; - - ao_close(ad->device); -} - -static bool -ao_output_open(void *data, struct audio_format *audio_format, - GError **error) -{ - ao_sample_format format = OUR_AO_FORMAT_INITIALIZER; - struct ao_data *ad = (struct ao_data *)data; - - switch (audio_format->format) { - case SAMPLE_FORMAT_S8: - format.bits = 8; - break; - - case SAMPLE_FORMAT_S16: - format.bits = 16; - break; - - default: - /* support for 24 bit samples in libao is currently - dubious, and until we have sorted that out, - convert everything to 16 bit */ - audio_format->format = SAMPLE_FORMAT_S16; - format.bits = 16; - break; - } - - format.rate = audio_format->sample_rate; - format.byte_format = AO_FMT_NATIVE; - format.channels = audio_format->channels; - - ad->device = ao_open_live(ad->driver, &format, ad->options); - - if (ad->device == NULL) { - ao_output_error(error); - return false; - } - - return true; -} - -/** - * For whatever reason, libao wants a non-const pointer. Let's hope - * it does not write to the buffer, and use the union deconst hack to - * work around this API misdesign. - */ -static int ao_play_deconst(ao_device *device, const void *output_samples, - uint_32 num_bytes) -{ - union { - const void *in; - void *out; - } u; - - u.in = output_samples; - return ao_play(device, u.out, num_bytes); -} - -static size_t -ao_output_play(void *data, const void *chunk, size_t size, - GError **error) -{ - struct ao_data *ad = (struct ao_data *)data; - - if (size > ad->write_size) - size = ad->write_size; - - if (ao_play_deconst(ad->device, chunk, size) == 0) { - ao_output_error(error); - return 0; - } - - return size; -} - -const struct audio_output_plugin ao_output_plugin = { - .name = "ao", - .init = ao_output_init, - .finish = ao_output_finish, - .open = ao_output_open, - .close = ao_output_close, - .play = ao_output_play, -}; |