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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>
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
ASTERISK_REGISTER_FILE()
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#include "asterisk/logger.h"
#include "asterisk/format.h"
#include "asterisk/format_cache.h"
#include "asterisk/astobj2.h"
#include "asterisk/strings.h"
/*!
* \brief Built-in cached signed linear 8kHz format.
*/
struct ast_format *ast_format_slin;
/*!
* \brief Built-in cached signed linear 12kHz format.
*/
struct ast_format *ast_format_slin12;
/*!
* \brief Built-in cached signed linear 16kHz format.
*/
struct ast_format *ast_format_slin16;
/*!
* \brief Built-in cached signed linear 24kHz format.
*/
struct ast_format *ast_format_slin24;
/*!
* \brief Built-in cached signed linear 32kHz format.
*/
struct ast_format *ast_format_slin32;
/*!
* \brief Built-in cached signed linear 44kHz format.
*/
struct ast_format *ast_format_slin44;
/*!
* \brief Built-in cached signed linear 48kHz format.
*/
struct ast_format *ast_format_slin48;
/*!
* \brief Built-in cached signed linear 96kHz format.
*/
struct ast_format *ast_format_slin96;
/*!
* \brief Built-in cached signed linear 192kHz format.
*/
struct ast_format *ast_format_slin192;
/*!
* \brief Built-in cached ulaw format.
*/
struct ast_format *ast_format_ulaw;
/*!
* \brief Built-in cached alaw format.
*/
struct ast_format *ast_format_alaw;
/*!
* \brief Built-in cached testlaw format.
*/
struct ast_format *ast_format_testlaw;
/*!
* \brief Built-in cached gsm format.
*/
struct ast_format *ast_format_gsm;
/*!
* \brief Built-in cached adpcm format.
*/
struct ast_format *ast_format_adpcm;
/*!
* \brief Built-in cached g722 format.
*/
struct ast_format *ast_format_g722;
/*!
* \brief Built-in cached g726 format.
*/
struct ast_format *ast_format_g726;
/*!
* \brief Built-in cached g726-aal2 format.
*/
struct ast_format *ast_format_g726_aal2;
/*!
* \brief Built-in cached ilbc format.
*/
struct ast_format *ast_format_ilbc;
/*!
* \brief Built-in cached ilbc format.
*/
struct ast_format *ast_format_lpc10;
/*!
* \brief Built-in cached speex format.
*/
struct ast_format *ast_format_speex;
/*!
* \brief Built-in cached speex at 16kHz format.
*/
struct ast_format *ast_format_speex16;
/*!
* \brief Built-in cached speex at 32kHz format.
*/
struct ast_format *ast_format_speex32;
/*!
* \brief Built-in cached g723.1 format.
*/
struct ast_format *ast_format_g723;
/*!
* \brief Built-in cached g729 format.
*/
struct ast_format *ast_format_g729;
/*!
* \brief Built-in cached g719 format.
*/
struct ast_format *ast_format_g719;
/*!
* \brief Built-in cached h261 format.
*/
struct ast_format *ast_format_h261;
/*!
* \brief Built-in cached h263 format.
*/
struct ast_format *ast_format_h263;
/*!
* \brief Built-in cached h263 plus format.
*/
struct ast_format *ast_format_h263p;
/*!
* \brief Built-in cached h264 format.
*/
struct ast_format *ast_format_h264;
/*!
* \brief Built-in cached mp4 format.
*/
struct ast_format *ast_format_mp4;
/*!
* \brief Built-in cached vp8 format.
*/
struct ast_format *ast_format_vp8;
/*!
* \brief Built-in cached jpeg format.
*/
struct ast_format *ast_format_jpeg;
/*!
* \brief Built-in cached png format.
*/
struct ast_format *ast_format_png;
/*!
* \brief Built-in cached siren14 format.
*/
struct ast_format *ast_format_siren14;
/*!
* \brief Built-in cached siren7 format.
*/
struct ast_format *ast_format_siren7;
/*!
* \brief Built-in cached opus format.
*/
struct ast_format *ast_format_opus;
/*!
* \brief Built-in cached t140 format.
*/
struct ast_format *ast_format_t140;
/*!
* \brief Built-in cached t140 red format.
*/
struct ast_format *ast_format_t140_red;
/*!
* \brief Built-in "null" format.
*/
struct ast_format *ast_format_none;
/*! \brief Number of buckets to use for the media format cache (should be prime for performance reasons) */
#define CACHE_BUCKETS 53
/*! \brief Cached formats */
static struct ao2_container *formats;
static int format_hash_cb(const void *obj, int flags)
{
const struct ast_format *format;
const char *key;
switch (flags & OBJ_SEARCH_MASK) {
case OBJ_SEARCH_KEY:
key = obj;
return ast_str_case_hash(key);
case OBJ_SEARCH_OBJECT:
format = obj;
return ast_str_case_hash(ast_format_get_name(format));
default:
/* Hash can only work on something with a full key. */
ast_assert(0);
return 0;
}
}
static int format_cmp_cb(void *obj, void *arg, int flags)
{
const struct ast_format *left = obj;
const struct ast_format *right = arg;
const char *right_key = arg;
int cmp;
switch (flags & OBJ_SEARCH_MASK) {
case OBJ_SEARCH_OBJECT:
right_key = ast_format_get_name(right);
/* Fall through */
case OBJ_SEARCH_KEY:
cmp = strcasecmp(ast_format_get_name(left), right_key);
break;
case OBJ_SEARCH_PARTIAL_KEY:
cmp = strncasecmp(ast_format_get_name(left), right_key, strlen(right_key));
break;
default:
ast_assert(0);
cmp = 0;
break;
}
if (cmp) {
return 0;
}
return CMP_MATCH;
}
/*! \brief Function called when the process is shutting down */
static void format_cache_shutdown(void)
{
ao2_cleanup(formats);
formats = NULL;
ao2_replace(ast_format_g723, NULL);
ao2_replace(ast_format_ulaw, NULL);
ao2_replace(ast_format_alaw, NULL);
ao2_replace(ast_format_gsm, NULL);
ao2_replace(ast_format_g726, NULL);
ao2_replace(ast_format_g726_aal2, NULL);
ao2_replace(ast_format_adpcm, NULL);
ao2_replace(ast_format_slin, NULL);
ao2_replace(ast_format_slin12, NULL);
ao2_replace(ast_format_slin16, NULL);
ao2_replace(ast_format_slin24, NULL);
ao2_replace(ast_format_slin32, NULL);
ao2_replace(ast_format_slin44, NULL);
ao2_replace(ast_format_slin48, NULL);
ao2_replace(ast_format_slin96, NULL);
ao2_replace(ast_format_slin192, NULL);
ao2_replace(ast_format_lpc10, NULL);
ao2_replace(ast_format_g729, NULL);
ao2_replace(ast_format_speex, NULL);
ao2_replace(ast_format_speex16, NULL);
ao2_replace(ast_format_speex32, NULL);
ao2_replace(ast_format_ilbc, NULL);
ao2_replace(ast_format_g722, NULL);
ao2_replace(ast_format_siren7, NULL);
ao2_replace(ast_format_siren14, NULL);
ao2_replace(ast_format_testlaw, NULL);
ao2_replace(ast_format_g719, NULL);
ao2_replace(ast_format_opus, NULL);
ao2_replace(ast_format_jpeg, NULL);
ao2_replace(ast_format_png, NULL);
ao2_replace(ast_format_h261, NULL);
ao2_replace(ast_format_h263, NULL);
ao2_replace(ast_format_h263p, NULL);
ao2_replace(ast_format_h264, NULL);
ao2_replace(ast_format_mp4, NULL);
ao2_replace(ast_format_vp8, NULL);
ao2_replace(ast_format_t140_red, NULL);
ao2_replace(ast_format_t140, NULL);
ao2_replace(ast_format_none, NULL);
}
int ast_format_cache_init(void)
{
formats = ao2_container_alloc_options(AO2_ALLOC_OPT_LOCK_RWLOCK, CACHE_BUCKETS,
format_hash_cb, format_cmp_cb);
if (!formats) {
return -1;
}
ast_register_cleanup(format_cache_shutdown);
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return 0;
}
static void set_cached_format(const char *name, struct ast_format *format)
{
if (!strcmp(name, "g723")) {
ao2_replace(ast_format_g723, format);
} else if (!strcmp(name, "ulaw")) {
ao2_replace(ast_format_ulaw, format);
} else if (!strcmp(name, "alaw")) {
ao2_replace(ast_format_alaw, format);
} else if (!strcmp(name, "gsm")) {
ao2_replace(ast_format_gsm, format);
} else if (!strcmp(name, "g726")) {
ao2_replace(ast_format_g726, format);
} else if (!strcmp(name, "g726aal2")) {
ao2_replace(ast_format_g726_aal2, format);
} else if (!strcmp(name, "adpcm")) {
ao2_replace(ast_format_adpcm, format);
} else if (!strcmp(name, "slin")) {
ao2_replace(ast_format_slin, format);
} else if (!strcmp(name, "slin12")) {
ao2_replace(ast_format_slin12, format);
} else if (!strcmp(name, "slin16")) {
ao2_replace(ast_format_slin16, format);
} else if (!strcmp(name, "slin24")) {
ao2_replace(ast_format_slin24, format);
} else if (!strcmp(name, "slin32")) {
ao2_replace(ast_format_slin32, format);
} else if (!strcmp(name, "slin44")) {
ao2_replace(ast_format_slin44, format);
} else if (!strcmp(name, "slin48")) {
ao2_replace(ast_format_slin48, format);
} else if (!strcmp(name, "slin96")) {
ao2_replace(ast_format_slin96, format);
} else if (!strcmp(name, "slin192")) {
ao2_replace(ast_format_slin192, format);
} else if (!strcmp(name, "lpc10")) {
ao2_replace(ast_format_lpc10, format);
} else if (!strcmp(name, "g729")) {
ao2_replace(ast_format_g729, format);
} else if (!strcmp(name, "speex")) {
ao2_replace(ast_format_speex, format);
} else if (!strcmp(name, "speex16")) {
ao2_replace(ast_format_speex16, format);
} else if (!strcmp(name, "speex32")) {
ao2_replace(ast_format_speex32, format);
} else if (!strcmp(name, "ilbc")) {
ao2_replace(ast_format_ilbc, format);
} else if (!strcmp(name, "g722")) {
ao2_replace(ast_format_g722, format);
} else if (!strcmp(name, "siren7")) {
ao2_replace(ast_format_siren7, format);
} else if (!strcmp(name, "siren14")) {
ao2_replace(ast_format_siren14, format);
} else if (!strcmp(name, "testlaw")) {
ao2_replace(ast_format_testlaw, format);
} else if (!strcmp(name, "g719")) {
ao2_replace(ast_format_g719, format);
} else if (!strcmp(name, "opus")) {
ao2_replace(ast_format_opus, format);
} else if (!strcmp(name, "jpeg")) {
ao2_replace(ast_format_jpeg, format);
} else if (!strcmp(name, "png")) {
ao2_replace(ast_format_png, format);
} else if (!strcmp(name, "h261")) {
ao2_replace(ast_format_h261, format);
} else if (!strcmp(name, "h263")) {
ao2_replace(ast_format_h263, format);
} else if (!strcmp(name, "h263p")) {
ao2_replace(ast_format_h263p, format);
} else if (!strcmp(name, "h264")) {
ao2_replace(ast_format_h264, format);
} else if (!strcmp(name, "mpeg4")) {
ao2_replace(ast_format_mp4, format);
} else if (!strcmp(name, "vp8")) {
ao2_replace(ast_format_vp8, format);
} else if (!strcmp(name, "red")) {
ao2_replace(ast_format_t140_red, format);
} else if (!strcmp(name, "t140")) {
ao2_replace(ast_format_t140, format);
} else if (!strcmp(name, "none")) {
ao2_replace(ast_format_none, format);
}
}
int ast_format_cache_set(struct ast_format *format)
{
SCOPED_AO2WRLOCK(lock, formats);
struct ast_format *old_format;
ast_assert(format != NULL);
if (ast_strlen_zero(ast_format_get_name(format))) {
return -1;
}
old_format = ao2_find(formats, ast_format_get_name(format), OBJ_SEARCH_KEY | OBJ_NOLOCK);
if (old_format) {
ao2_unlink_flags(formats, old_format, OBJ_NOLOCK);
}
ao2_link_flags(formats, format, OBJ_NOLOCK);
set_cached_format(ast_format_get_name(format), format);
ast_verb(2, "%s cached format with name '%s'\n",
old_format ? "Updated" : "Created",
ast_format_get_name(format));
ao2_cleanup(old_format);
return 0;
}
struct ast_format *__ast_format_cache_get(const char *name,
const char *tag, const char *file, int line, const char *func)
{
if (ast_strlen_zero(name)) {
return NULL;
}
return __ao2_find(formats, name, OBJ_SEARCH_KEY, tag, file, line, func);
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}
struct ast_format *ast_format_cache_get_slin_by_rate(unsigned int rate)
{
if (rate >= 192000) {
return ast_format_slin192;
} else if (rate >= 96000) {
return ast_format_slin96;
} else if (rate >= 48000) {
return ast_format_slin48;
} else if (rate >= 44100) {
return ast_format_slin44;
} else if (rate >= 32000) {
return ast_format_slin32;
} else if (rate >= 24000) {
return ast_format_slin24;
} else if (rate >= 16000) {
return ast_format_slin16;
} else if (rate >= 12000) {
return ast_format_slin12;
}
return ast_format_slin;
}
int ast_format_cache_is_slinear(struct ast_format *format)
{
if ((ast_format_cmp(format, ast_format_slin) == AST_FORMAT_CMP_EQUAL)
Richard Mudgett
committed
|| (ast_format_cmp(format, ast_format_slin12) == AST_FORMAT_CMP_EQUAL)
|| (ast_format_cmp(format, ast_format_slin16) == AST_FORMAT_CMP_EQUAL)
|| (ast_format_cmp(format, ast_format_slin24) == AST_FORMAT_CMP_EQUAL)
|| (ast_format_cmp(format, ast_format_slin32) == AST_FORMAT_CMP_EQUAL)
|| (ast_format_cmp(format, ast_format_slin44) == AST_FORMAT_CMP_EQUAL)
|| (ast_format_cmp(format, ast_format_slin48) == AST_FORMAT_CMP_EQUAL)
|| (ast_format_cmp(format, ast_format_slin96) == AST_FORMAT_CMP_EQUAL)
|| (ast_format_cmp(format, ast_format_slin192) == AST_FORMAT_CMP_EQUAL)) {
return 1;
}
return 0;