From a86c1d68e9e2025847cacceaded3941fa099c9d6 Mon Sep 17 00:00:00 2001 From: David Vossel Date: Fri, 8 Jul 2011 20:18:39 +0000 Subject: Moves celt and silk format attribute files into res folder. It was inconsistent to have the silk and celt format attribute modules in the format file interpreter folder. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@327116 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- res/res_format_attr_celt.c | 181 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 181 insertions(+) create mode 100644 res/res_format_attr_celt.c (limited to 'res/res_format_attr_celt.c') diff --git a/res/res_format_attr_celt.c b/res/res_format_attr_celt.c new file mode 100644 index 000000000..de3de8c40 --- /dev/null +++ b/res/res_format_attr_celt.c @@ -0,0 +1,181 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 2011, Digium, Inc. + * + * David Vossel + * + * 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 CELT format attribute interface + * + * \author David Vossel + */ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include "asterisk/module.h" +#include "asterisk/format.h" + +/*! + * \brief CELT attribute structure. + * + * \note The only attribute that affects compatibility here is the sample rate. + */ +struct celt_attr { + unsigned int samplerate; + unsigned int maxbitrate; + unsigned int framesize; +}; + +static enum ast_format_cmp_res celt_cmp(const struct ast_format_attr *fattr1, const struct ast_format_attr *fattr2) +{ + struct celt_attr *attr1 = (struct celt_attr *) fattr1; + struct celt_attr *attr2 = (struct celt_attr *) fattr2; + + if (attr1->samplerate == attr2->samplerate) { + return AST_FORMAT_CMP_EQUAL; + } + return AST_FORMAT_CMP_NOT_EQUAL; +} + +static int celt_get_val(const struct ast_format_attr *fattr, int key, void *result) +{ + const struct celt_attr *attr = (struct celt_attr *) fattr; + int *val = result; + + switch (key) { + case CELT_ATTR_KEY_SAMP_RATE: + *val = attr->samplerate; + break; + case CELT_ATTR_KEY_MAX_BITRATE: + *val = attr->maxbitrate; + break; + case CELT_ATTR_KEY_FRAME_SIZE: + *val = attr->framesize; + break; + default: + return -1; + ast_log(LOG_WARNING, "unknown attribute type %d\n", key); + } + return 0; +} + +static int celt_isset(const struct ast_format_attr *fattr, va_list ap) +{ + enum celt_attr_keys key; + const struct celt_attr *attr = (struct celt_attr *) fattr; + + for (key = va_arg(ap, int); + key != AST_FORMAT_ATTR_END; + key = va_arg(ap, int)) + { + switch (key) { + case CELT_ATTR_KEY_SAMP_RATE: + if (attr->samplerate != (va_arg(ap, int))) { + return -1; + } + break; + case CELT_ATTR_KEY_MAX_BITRATE: + if (attr->maxbitrate != (va_arg(ap, int))) { + return -1; + } + break; + case CELT_ATTR_KEY_FRAME_SIZE: + if (attr->framesize != (va_arg(ap, int))) { + return -1; + } + break; + default: + return -1; + ast_log(LOG_WARNING, "unknown attribute type %d\n", key); + } + } + return 0; +} +static int celt_getjoint(const struct ast_format_attr *fattr1, const struct ast_format_attr *fattr2, struct ast_format_attr *result) +{ + struct celt_attr *attr1 = (struct celt_attr *) fattr1; + struct celt_attr *attr2 = (struct celt_attr *) fattr2; + struct celt_attr *attr_res = (struct celt_attr *) result; + + /* sample rate is the only attribute that has any bearing on if joint capabilities exist or not */ + if (attr1->samplerate != attr2->samplerate) { + return -1; + } + /* either would work, they are guaranteed the same at this point. */ + attr_res->samplerate = attr1->samplerate; + /* Take the lowest max bitrate */ + attr_res->maxbitrate = MIN(attr1->maxbitrate, attr2->maxbitrate); + + attr_res->framesize = attr2->framesize; /* TODO figure out what joint framesize means */ + return 0; +} + +static void celt_set(struct ast_format_attr *fattr, va_list ap) +{ + enum celt_attr_keys key; + struct celt_attr *attr = (struct celt_attr *) fattr; + + for (key = va_arg(ap, int); + key != AST_FORMAT_ATTR_END; + key = va_arg(ap, int)) + { + switch (key) { + case CELT_ATTR_KEY_SAMP_RATE: + attr->samplerate = (va_arg(ap, int)); + break; + case CELT_ATTR_KEY_MAX_BITRATE: + attr->maxbitrate = (va_arg(ap, int)); + break; + case CELT_ATTR_KEY_FRAME_SIZE: + attr->framesize = (va_arg(ap, int)); + break; + default: + ast_log(LOG_WARNING, "unknown attribute type %d\n", key); + } + } +} + +static struct ast_format_attr_interface celt_interface = { + .id = AST_FORMAT_CELT, + .format_attr_cmp = celt_cmp, + .format_attr_get_joint = celt_getjoint, + .format_attr_set = celt_set, + .format_attr_isset = celt_isset, + .format_attr_get_val = celt_get_val, +}; + +static int load_module(void) +{ + if (ast_format_attr_reg_interface(&celt_interface)) { + return AST_MODULE_LOAD_DECLINE; + } + + return AST_MODULE_LOAD_SUCCESS; +} + +static int unload_module(void) +{ + ast_format_attr_unreg_interface(&celt_interface); + return 0; +} + +AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "CELT Format Attribute Module", + .load = load_module, + .unload = unload_module, + .load_pri = AST_MODPRI_CHANNEL_DEPEND, +); -- cgit v1.2.3