#ifndef foochannelmaphfoo
#define foochannelmaphfoo
-/* $Id$ */
-
/***
This file is part of PulseAudio.
+ Copyright 2005-2006 Lennart Poettering
+ Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
#include <pulse/sample.h>
#include <pulse/cdecl.h>
+#include <pulse/gccmacro.h>
/** \page channelmap Channel Maps
*
*
* \li pa_channel_map_init_mono() - Create a channel map with only mono audio.
* \li pa_channel_map_init_stereo() - Create a standard stereo mapping.
- * \li pa_channel_map_init_auto() - Create a standard channel map for up to
- * six channels.
+ * \li pa_channel_map_init_auto() - Create a standard channel map for a specific number of channels
+ * \li pa_channel_map_init_extend() - Similar to
+ * pa_channel_map_init_auto() but synthesize a channel map if noone
+ * predefined one is known for the specified number of channels.
*
* \section conv_sec Convenience Functions
*
/** Initialize the specified channel map for stereophonic audio and return a pointer to it */
pa_channel_map* pa_channel_map_init_stereo(pa_channel_map *m);
-/** Initialize the specified channel map for the specified number
- * of channels using default labels and return a pointer to it. */
+/** Initialize the specified channel map for the specified number of
+ * channels using default labels and return a pointer to it. This call
+ * will fail (return NULL) if there is no default channel map known for this
+ * specific number of channels and mapping. */
pa_channel_map* pa_channel_map_init_auto(pa_channel_map *m, unsigned channels, pa_channel_map_def_t def);
+/** Similar to pa_channel_map_init_auto() but instead of failing if no
+ * default mapping is known with the specified parameters it will
+ * synthesize a mapping based on a known mapping with fewer channels
+ * and fill up the rest with AUX0...AUX31 channels \since 0.9.11 */
+pa_channel_map* pa_channel_map_init_extend(pa_channel_map *m, unsigned channels, pa_channel_map_def_t def);
+
/** Return a text label for the specified channel position */
-const char* pa_channel_position_to_string(pa_channel_position_t pos);
+const char* pa_channel_position_to_string(pa_channel_position_t pos) PA_GCC_PURE;
+
+/** Return a human readable text label for the specified channel position. \since 0.9.7 */
+const char* pa_channel_position_to_pretty_string(pa_channel_position_t pos);
/** The maximum length of strings returned by pa_channel_map_snprint() */
#define PA_CHANNEL_MAP_SNPRINT_MAX 336
/** Make a humand readable string from the specified channel map */
char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map);
-/** Parse a channel position list into a channel map structure. \since 0.8.1 */
+/** Parse a channel position list into a channel map structure. */
pa_channel_map *pa_channel_map_parse(pa_channel_map *map, const char *s);
/** Compare two channel maps. Return 1 if both match. */
-int pa_channel_map_equal(const pa_channel_map *a, const pa_channel_map *b);
+int pa_channel_map_equal(const pa_channel_map *a, const pa_channel_map *b) PA_GCC_PURE;
/** Return non-zero of the specified channel map is considered valid */
-int pa_channel_map_valid(const pa_channel_map *map);
+int pa_channel_map_valid(const pa_channel_map *map) PA_GCC_PURE;
PA_C_DECL_END