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asterisk/res/res_format_attr_h263.c
Matt Jordan 4a58261694 git migration: Refactor the ASTERISK_FILE_VERSION macro 
Git does not support the ability to replace a token with a version
string during check-in. While it does have support for replacing a
token on clone, this is somewhat sub-optimal: the token is replaced
with the object hash, which is not particularly easy for human
consumption. What's more, in practice, the source file version was often
not terribly useful. Generally, when triaging bugs, the overall version
of Asterisk is far more useful than an individual SVN version of a file. As a
result, this patch removes Asterisk's support for showing source file
versions.

Specifically, it does the following:

* Rename ASTERISK_FILE_VERSION macro to ASTERISK_REGISTER_FILE, and
  remove passing the version in with the macro. Other facilities
  than 'core show file version' make use of the file names, such as
  setting a debug level only on a specific file. As such, the act of
  registering source files with the Asterisk core still has use. The
  macro rename now reflects the new macro purpose.

* main/asterisk:
  - Refactor the file_version structure to reflect that it no longer
    tracks a version field.
  - Remove the "core show file version" CLI command. Without the file
    version, it is no longer useful.
  - Remove the ast_file_version_find function. The file version is no
    longer tracked.
  - Rename ast_register_file_version/ast_unregister_file_version to
    ast_register_file/ast_unregister_file, respectively.

* main/manager: Remove value from the Version key of the ModuleCheck
  Action. The actual key itself has not been removed, as doing so would
  absolutely constitute a backwards incompatible change. However, since
  the file version is no longer tracked, there is no need to attempt to
  include it in the Version key.

* UPGRADE: Add notes for:
  - Modification to the ModuleCheck AMI Action
  - Removal of the "core show file version" CLI command

Change-Id: I6cf0ff280e1668bf4957dc21f32a5ff43444a40e
2015-04-13 03:48:57 -04:00

278 lines
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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2012, 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 H.263 Format Attribute Module
*
* \author\verbatim Joshua Colp <jcolp@digium.com> \endverbatim
*
* This is a format attribute module for the H.263 codec.
* \ingroup applications
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
ASTERISK_REGISTER_FILE()
#include "asterisk/module.h"
#include "asterisk/format.h"
struct h263_attr {
unsigned int SQCIF; /*!< Minimum picture interval for SQCIF resolution */
unsigned int QCIF; /*!< Minimum picture interval for QCIF resolution */
unsigned int CIF; /*!< Minimum picture interval for CIF resolution */
unsigned int CIF4; /*!< Minimum picture interval for CIF4 resolution */
unsigned int CIF16; /*!< Minimum picture interval for CIF16 resolution */
unsigned int VGA; /*!< Minimum picture interval for VGA resolution */
unsigned int CUSTOM_XMAX; /*!< Custom resolution (Xmax) */
unsigned int CUSTOM_YMAX; /*!< Custom resolution (Ymax) */
unsigned int CUSTOM_MPI; /*!< Custom resolution (MPI) */
unsigned int F; /*!< F annex support */
unsigned int I; /*!< I annex support */
unsigned int J; /*!< J annex support */
unsigned int T; /*!< T annex support */
unsigned int K; /*!< K annex support */
unsigned int N; /*!< N annex support */
unsigned int P_SUB1; /*!< Reference picture resampling (sub mode 1) */
unsigned int P_SUB2; /*!< Reference picture resampling (sub mode 2) */
unsigned int P_SUB3; /*!< Reference picture resampling (sub mode 3) */
unsigned int P_SUB4; /*!< Reference picture resampling (sub mode 4) */
unsigned int PAR_WIDTH; /*!< Pixel aspect ratio (width) */
unsigned int PAR_HEIGHT; /*!< Pixel aspect ratio (height) */
unsigned int BPP; /*!< Bits per picture maximum */
unsigned int HRD; /*!< Hypothetical reference decoder status */
};
static void h263_destroy(struct ast_format *format)
{
struct h263_attr *attr = ast_format_get_attribute_data(format);
ast_free(attr);
}
static int h263_clone(const struct ast_format *src, struct ast_format *dst)
{
struct h263_attr *original = ast_format_get_attribute_data(src);
struct h263_attr *attr = ast_calloc(1, sizeof(*attr));
if (!attr) {
return -1;
}
if (original) {
*attr = *original;
}
ast_format_set_attribute_data(dst, attr);
return 0;
}
static enum ast_format_cmp_res h263_cmp(const struct ast_format *format1, const struct ast_format *format2)
{
struct h263_attr *attr1 = ast_format_get_attribute_data(format1);
struct h263_attr *attr2 = ast_format_get_attribute_data(format2);
if (!attr1 || !attr2 || (attr1 && attr2 && !memcmp(attr1, attr2, sizeof(*attr1)))) {
return AST_FORMAT_CMP_EQUAL;
}
return AST_FORMAT_CMP_NOT_EQUAL;
}
#define DETERMINE_JOINT(joint, attr1, attr2, field) (joint->field = (attr1 && attr1->field) ? attr1->field : (attr2 && attr2->field) ? attr2->field : 0)
static struct ast_format *h263_getjoint(const struct ast_format *format1, const struct ast_format *format2)
{
struct ast_format *cloned;
struct h263_attr *attr, *attr1, *attr2;
cloned = ast_format_clone(format1);
if (!cloned) {
return NULL;
}
attr = ast_format_get_attribute_data(cloned);
attr1 = ast_format_get_attribute_data(format1);
attr2 = ast_format_get_attribute_data(format2);
DETERMINE_JOINT(attr, attr1, attr2, SQCIF);
DETERMINE_JOINT(attr, attr1, attr2, QCIF);
DETERMINE_JOINT(attr, attr1, attr2, CIF);
DETERMINE_JOINT(attr, attr1, attr2, CIF4);
DETERMINE_JOINT(attr, attr1, attr2, CIF16);
DETERMINE_JOINT(attr, attr1, attr2, VGA);
DETERMINE_JOINT(attr, attr1, attr2, CUSTOM_XMAX);
DETERMINE_JOINT(attr, attr1, attr2, CUSTOM_YMAX);
DETERMINE_JOINT(attr, attr1, attr2, CUSTOM_MPI);
DETERMINE_JOINT(attr, attr1, attr2, F);
DETERMINE_JOINT(attr, attr1, attr2, I);
DETERMINE_JOINT(attr, attr1, attr2, J);
DETERMINE_JOINT(attr, attr1, attr2, T);
DETERMINE_JOINT(attr, attr1, attr2, K);
DETERMINE_JOINT(attr, attr1, attr2, N);
DETERMINE_JOINT(attr, attr1, attr2, P_SUB1);
DETERMINE_JOINT(attr, attr1, attr2, P_SUB2);
DETERMINE_JOINT(attr, attr1, attr2, P_SUB3);
DETERMINE_JOINT(attr, attr1, attr2, P_SUB4);
DETERMINE_JOINT(attr, attr1, attr2, PAR_WIDTH);
DETERMINE_JOINT(attr, attr1, attr2, PAR_HEIGHT);
DETERMINE_JOINT(attr, attr1, attr2, BPP);
DETERMINE_JOINT(attr, attr1, attr2, HRD);
return cloned;
}
static struct ast_format *h263_parse_sdp_fmtp(const struct ast_format *format, const char *attributes)
{
char *attribs = ast_strdupa(attributes), *attrib;
struct ast_format *cloned;
struct h263_attr *attr;
cloned = ast_format_clone(format);
if (!cloned) {
return NULL;
}
attr = ast_format_get_attribute_data(cloned);
while ((attrib = strsep(&attribs, ";"))) {
unsigned int val, val2 = 0, val3 = 0, val4 = 0;
if (sscanf(attrib, "SQCIF=%30u", &val) == 1) {
attr->SQCIF = val;
} else if (sscanf(attrib, "QCIF=%30u", &val) == 1) {
attr->QCIF = val;
} else if (sscanf(attrib, "CIF=%30u", &val) == 1) {
attr->CIF = val;
} else if (sscanf(attrib, "CIF4=%30u", &val) == 1) {
attr->CIF4 = val;
} else if (sscanf(attrib, "CIF16=%30u", &val) == 1) {
attr->CIF16 = val;
} else if (sscanf(attrib, "VGA=%30u", &val) == 1) {
attr->VGA = val;
} else if (sscanf(attrib, "CUSTOM=%30u,%30u,%30u", &val, &val2, &val3) == 3) {
attr->CUSTOM_XMAX = val;
attr->CUSTOM_YMAX = val2;
attr->CUSTOM_MPI = val3;
} else if (sscanf(attrib, "F=%30u", &val) == 1) {
attr->F = val;
} else if (sscanf(attrib, "I=%30u", &val) == 1) {
attr->I = val;
} else if (sscanf(attrib, "J=%30u", &val) == 1) {
attr->J = val;
} else if (sscanf(attrib, "T=%30u", &val) == 1) {
attr->T = val;
} else if (sscanf(attrib, "K=%30u", &val) == 1) {
attr->K = val;
} else if (sscanf(attrib, "N=%30u", &val) == 1) {
attr->N = val;
} else if (sscanf(attrib, "PAR=%30u:%30u", &val, &val2) == 2) {
attr->PAR_WIDTH = val;
attr->PAR_HEIGHT = val2;
} else if (sscanf(attrib, "BPP=%30u", &val) == 1) {
attr->BPP = val;
} else if (sscanf(attrib, "HRD=%30u", &val) == 1) {
attr->HRD = val;
} else if (sscanf(attrib, "P=%30u,%30u,%30u,%30u", &val, &val2, &val3, &val4) > 0) {
attr->P_SUB1 = val;
attr->P_SUB2 = val2;
attr->P_SUB3 = val3;
attr->P_SUB4 = val4;
}
}
return cloned;
}
static void h263_generate_sdp_fmtp(const struct ast_format *format, unsigned int payload, struct ast_str **str)
{
struct h263_attr *attr = ast_format_get_attribute_data(format);
if (!attr) {
return;
}
ast_str_append(str, 0, "a=fmtp:%u SQCIF=%u;QCIF=%u;CIF=%u;CIF4=%u;CIF16=%u;VGA=%u;F=%u;I=%u;J=%u;T=%u;K=%u;N=%u;BPP=%u;HRD=%u",
payload, attr->SQCIF, attr->QCIF, attr->CIF, attr->CIF4, attr->CIF16, attr->VGA, attr->F, attr->I, attr->J,
attr->T, attr->K, attr->N, attr->BPP, attr->HRD);
if (attr->CUSTOM_XMAX && attr->CUSTOM_YMAX && attr->CUSTOM_MPI) {
ast_str_append(str, 0, ";CUSTOM=%u,%u,%u", attr->CUSTOM_XMAX, attr->CUSTOM_YMAX, attr->CUSTOM_MPI);
}
if (attr->PAR_WIDTH && attr->PAR_HEIGHT) {
ast_str_append(str, 0, ";PAR=%u:%u", attr->PAR_WIDTH, attr->PAR_HEIGHT);
}
if (attr->P_SUB1) {
ast_str_append(str, 0, ";P=%u", attr->P_SUB1);
if (attr->P_SUB2) {
ast_str_append(str, 0, ",%u", attr->P_SUB2);
}
if (attr->P_SUB3) {
ast_str_append(str, 0, ",%u", attr->P_SUB3);
}
if (attr->P_SUB4) {
ast_str_append(str, 0, ",%u", attr->P_SUB4);
}
}
ast_str_append(str, 0, "\r\n");
return;
}
static struct ast_format_interface h263_interface = {
.format_destroy = h263_destroy,
.format_clone = h263_clone,
.format_cmp = h263_cmp,
.format_get_joint = h263_getjoint,
.format_parse_sdp_fmtp = h263_parse_sdp_fmtp,
.format_generate_sdp_fmtp = h263_generate_sdp_fmtp,
};
static int unload_module(void)
{
return 0;
}
static int load_module(void)
{
if (ast_format_interface_register("h263", &h263_interface)) {
return AST_MODULE_LOAD_DECLINE;
}
if (ast_format_interface_register("h263p", &h263_interface)) {
return AST_MODULE_LOAD_DECLINE;
}
return AST_MODULE_LOAD_SUCCESS;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "H.263 Format Attribute Module",
.support_level = AST_MODULE_SUPPORT_CORE,
.load = load_module,
.unload = unload_module,
.load_pri = AST_MODPRI_DEFAULT,
);
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