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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2014, Digium, Inc.
*
* Joshua Colp <jcolp@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*!
* \file
* \brief Media Format Cache API
*
* \author Joshua Colp <jcolp@digium.com>
*/
#ifndef _AST_FORMAT_CACHE_H_
#define _AST_FORMAT_CACHE_H_
struct ast_format;
/*!
* \brief Built-in cached signed linear 8kHz format.
*/
extern struct ast_format *ast_format_slin;
/*!
* \brief Built-in cached signed linear 12kHz format.
*/
extern struct ast_format *ast_format_slin12;
/*!
* \brief Built-in cached signed linear 16kHz format.
*/
extern struct ast_format *ast_format_slin16;
/*!
* \brief Built-in cached signed linear 24kHz format.
*/
extern struct ast_format *ast_format_slin24;
/*!
* \brief Built-in cached signed linear 32kHz format.
*/
extern struct ast_format *ast_format_slin32;
/*!
* \brief Built-in cached signed linear 44kHz format.
*/
extern struct ast_format *ast_format_slin44;
/*!
* \brief Built-in cached signed linear 48kHz format.
*/
extern struct ast_format *ast_format_slin48;
/*!
* \brief Built-in cached signed linear 96kHz format.
*/
extern struct ast_format *ast_format_slin96;
/*!
* \brief Built-in cached signed linear 192kHz format.
*/
extern struct ast_format *ast_format_slin192;
/*!
* \brief Built-in cached ulaw format.
*/
extern struct ast_format *ast_format_ulaw;
/*!
* \brief Built-in cached alaw format.
*/
extern struct ast_format *ast_format_alaw;
/*!
* \brief Built-in cached testlaw format.
*/
extern struct ast_format *ast_format_testlaw;
/*!
* \brief Built-in cached gsm format.
*/
extern struct ast_format *ast_format_gsm;
/*!
* \brief Built-in cached adpcm format.
*/
extern struct ast_format *ast_format_adpcm;
/*!
* \brief Built-in cached g722 format.
*/
extern struct ast_format *ast_format_g722;
/*!
* \brief Built-in cached g726 format.
*/
extern struct ast_format *ast_format_g726;
/*!
* \brief Built-in cached g726 aal2 format.
*/
extern struct ast_format *ast_format_g726_aal2;
/*!
* \brief Built-in cached ilbc format.
*/
extern struct ast_format *ast_format_ilbc;
/*!
* \brief Built-in cached ilbc format.
*/
extern struct ast_format *ast_format_lpc10;
/*!
* \brief Built-in cached speex format.
*/
extern struct ast_format *ast_format_speex;
/*!
* \brief Built-in cached speex at 16kHz format.
*/
extern struct ast_format *ast_format_speex16;
/*!
* \brief Built-in cached speex at 32kHz format.
*/
extern struct ast_format *ast_format_speex32;
/*!
* \brief Built-in cached g723.1 format.
*/
extern struct ast_format *ast_format_g723;
/*!
* \brief Built-in cached g729 format.
*/
extern struct ast_format *ast_format_g729;
/*!
* \brief Built-in cached g719 format.
*/
extern struct ast_format *ast_format_g719;
/*!
* \brief Built-in cached h261 format.
*/
extern struct ast_format *ast_format_h261;
/*!
* \brief Built-in cached h263 format.
*/
extern struct ast_format *ast_format_h263;
/*!
* \brief Built-in cached h263 plus format.
*/
extern struct ast_format *ast_format_h263p;
/*!
* \brief Built-in cached h264 format.
*/
extern struct ast_format *ast_format_h264;
/*!
* \brief Built-in cached mp4 format.
*/
extern struct ast_format *ast_format_mp4;
/*!
* \brief Built-in cached vp8 format.
*/
extern struct ast_format *ast_format_vp8;
/*!
* \brief Built-in cached vp9 format.
*/
extern struct ast_format *ast_format_vp9;
/*!
* \brief Built-in cached jpeg format.
*/
extern struct ast_format *ast_format_jpeg;
/*!
* \brief Built-in cached png format.
*/
extern struct ast_format *ast_format_png;
/*!
* \brief Built-in cached siren14 format.
*/
extern struct ast_format *ast_format_siren14;
/*!
* \brief Built-in cached siren7 format.
*/
extern struct ast_format *ast_format_siren7;
/*!
* \brief Built-in cached opus format.
*/
extern struct ast_format *ast_format_opus;
/*!
* \brief Built-in cached Codec 2 format.
*/
extern struct ast_format *ast_format_codec2;
/*!
* \brief Built-in cached t140 format.
*/
extern struct ast_format *ast_format_t140;
/*!
* \brief Built-in cached t140 red format.
*/
extern struct ast_format *ast_format_t140_red;
/*!
* \brief Built-in cached T.38 format.
*/
extern struct ast_format *ast_format_t38;
/*!
* \brief Built-in "null" format.
*/
extern struct ast_format *ast_format_none;
/*!
* \brief Built-in SILK format.
*/
extern struct ast_format *ast_format_silk8;
extern struct ast_format *ast_format_silk12;
extern struct ast_format *ast_format_silk16;
extern struct ast_format *ast_format_silk24;
/*!
* \brief Initialize format cache support within the core.
*
* \retval 0 success
* \retval -1 failure
*/
int ast_format_cache_init(void);
/*!
* \brief Set a named format cache entry.
*
* \param format A pointer to the format to cache
*
* \retval 0 success
* \retval -1 failure
*/
int ast_format_cache_set(struct ast_format *format);
/*!
* \brief Retrieve a named format from the cache.
*
* \param name Name of the cached format
*
* \retval non-NULL if found
* \retval NULL if not found
*
* \note The returned format has its reference count incremented. It must be
* dropped using ao2_ref or ao2_cleanup.
*/
struct ast_format *__ast_format_cache_get(const char *name,
const char *tag, const char *file, int line, const char *func);
#define ast_format_cache_get(name) \
__ast_format_cache_get((name), "ast_format_cache_get", __FILE__, __LINE__, __PRETTY_FUNCTION__)
#define ast_t_format_cache_get(name, tag) \
__ast_format_cache_get((name), (tag), __FILE__, __LINE__, __PRETTY_FUNCTION__)
/*!
* \brief Retrieve the best signed linear format given a sample rate.
*
* \param rate The sample rate
*
* \details
* This is a convenience function that returns one of the global
* ast_format_slinxxx formats.
*
* \return pointer to the signed linear format
*
* \note The returned format has NOT had its reference count incremented.
*/
struct ast_format *ast_format_cache_get_slin_by_rate(unsigned int rate);
/*!
* \brief Determines if a format is one of the cached slin formats
*
* \param format The format to check
*
* \retval 0 if the format is not an SLIN format
* \retval 1 if the format is an SLIN format
*/
int ast_format_cache_is_slinear(struct ast_format *format);
#endif /* _AST_FORMAT_CACHE_H */
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