/*
* This file is part of DisOrder.
- * Copyright (C) 2009 Richard Kettlewell
+ * Copyright (C) 2009, 2013 Richard Kettlewell
*
* 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
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "uaudio.h"
#include "hash.h"
#include "mem.h"
+#include "log.h"
/** @brief Options for chosen uaudio API */
static hash *uaudio_options;
/** @brief Whether samples are signed or unsigned */
int uaudio_signed;
+/** @brief Frames of buffer to tolerate inside chosen API */
+int uaudio_buffer;
+
/** @brief Sample size in bytes
*
* NB one sample is a single point sample; up to @c uaudio_channels samples may
/** @brief Set a uaudio option */
void uaudio_set(const char *name, const char *value) {
+ if(!value) {
+ if(uaudio_options)
+ hash_remove(uaudio_options, name);
+ return;
+ }
if(!uaudio_options)
uaudio_options = hash_new(sizeof(char *));
value = xstrdup(value);
hash_add(uaudio_options, name, &value, HASH_INSERT_OR_REPLACE);
}
-/** @brief Set a uaudio option */
-char *uaudio_get(const char *name) {
- const char *value = (uaudio_options ?
- *(char **)hash_find(uaudio_options, name)
- : NULL);
- return value ? xstrdup(value) : NULL;
+/** @brief Get a uaudio option */
+char *uaudio_get(const char *name, const char *default_value) {
+ if(!uaudio_options)
+ return default_value ? xstrdup(default_value) : 0;
+ char **valuep = hash_find(uaudio_options, name);
+ if(!valuep)
+ return default_value ? xstrdup(default_value) : 0;
+ return xstrdup(*valuep);
}
-/** @brief Set sample format
+/** @brief Set sample format
* @param rate Sample rate in KHz
* @param channels Number of channels (i.e. 2 for stereo)
* @param bits Number of bits per channel (typically 8 or 16)
uaudio_sample_size = bits / CHAR_BIT;
}
-/** @brief List of known APIs
- *
- * Terminated by a null pointer.
- *
- * The first one will be used as a default, so putting ALSA before OSS
- * constitutes a policy decision.
+/** @brief Choose the default audio API by context
+ * @param apis Table of APIs or a null pointer
+ * @param context @ref UAUDIO_API_SERVER or @ref UAUDIO_API_CLIENT
+ * @return Default API or a null pointer
*/
-const struct uaudio *uaudio_apis[] = {
-#if HAVE_COREAUDIO_AUDIOHARDWARE_H
- &uaudio_coreaudio,
-#endif
-#if HAVE_ALSA_ASOUNDLIB_H
- &uaudio_alsa,
-#endif
-#if HAVE_SYS_SOUNDCARD_H || EMPEG_HOST
- &uaudio_oss,
-#endif
- &uaudio_rtp,
- &uaudio_command,
- NULL,
-};
+const struct uaudio *uaudio_default(const struct uaudio *const *apis,
+ unsigned context) {
+ if(apis) {
+ for(int n = 0; apis[n]; ++n)
+ if(apis[n]->flags & context)
+ return apis[n];
+ }
+ return 0;
+}
/*
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