JPEG File format support. More...
#include "asterisk.h"
#include "asterisk/mod_format.h"
#include "asterisk/module.h"
#include "asterisk/image.h"
#include "asterisk/endian.h"
Go to the source code of this file.
Functions | |
AST_MODULE_INFO (ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER,"jpeg (joint picture experts group) image format",.load=load_module,.unload=unload_module,.load_pri=AST_MODPRI_APP_DEPEND) | |
static int | jpeg_identify (int fd) |
static struct ast_frame * | jpeg_read_image (int fd, int len) |
static int | jpeg_write_image (int fd, struct ast_frame *fr) |
static int | load_module (void) |
static int | unload_module (void) |
Variables | |
static struct ast_imager | jpeg_format |
JPEG File format support.
Definition in file format_jpeg.c.
AST_MODULE_INFO | ( | ASTERISK_GPL_KEY | , | |
AST_MODFLAG_LOAD_ORDER | , | |||
"jpeg (joint picture experts group) image format" | , | |||
. | load = load_module , |
|||
. | unload = unload_module , |
|||
. | load_pri = AST_MODPRI_APP_DEPEND | |||
) |
static int jpeg_identify | ( | int | fd | ) | [static] |
Definition at line 62 of file format_jpeg.c.
static struct ast_frame* jpeg_read_image | ( | int | fd, | |
int | len | |||
) | [static, read] |
Definition at line 40 of file format_jpeg.c.
References AST_FORMAT_JPEG, AST_FRAME_IMAGE, ast_frisolate(), ast_log(), ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, errno, ast_frame::frametype, LOG_WARNING, ast_frame::ptr, ast_frame::src, and ast_frame::subclass.
00041 { 00042 struct ast_frame fr; 00043 int res; 00044 char buf[65536]; 00045 if (len > sizeof(buf) || len < 0) { 00046 ast_log(LOG_WARNING, "JPEG image too large to read\n"); 00047 return NULL; 00048 } 00049 res = read(fd, buf, len); 00050 if (res < len) { 00051 ast_log(LOG_WARNING, "Only read %d of %d bytes: %s\n", res, len, strerror(errno)); 00052 } 00053 memset(&fr, 0, sizeof(fr)); 00054 fr.frametype = AST_FRAME_IMAGE; 00055 fr.subclass.codec = AST_FORMAT_JPEG; 00056 fr.data.ptr = buf; 00057 fr.src = "JPEG Read"; 00058 fr.datalen = len; 00059 return ast_frisolate(&fr); 00060 }
static int jpeg_write_image | ( | int | fd, | |
struct ast_frame * | fr | |||
) | [static] |
Definition at line 74 of file format_jpeg.c.
References AST_FORMAT_JPEG, AST_FRAME_IMAGE, ast_log(), ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, errno, ast_frame::frametype, LOG_WARNING, ast_frame::ptr, and ast_frame::subclass.
00075 { 00076 int res=0; 00077 if (fr->frametype != AST_FRAME_IMAGE) { 00078 ast_log(LOG_WARNING, "Not an image\n"); 00079 return -1; 00080 } 00081 if (fr->subclass.codec != AST_FORMAT_JPEG) { 00082 ast_log(LOG_WARNING, "Not a jpeg image\n"); 00083 return -1; 00084 } 00085 if (fr->datalen) { 00086 res = write(fd, fr->data.ptr, fr->datalen); 00087 if (res != fr->datalen) { 00088 ast_log(LOG_WARNING, "Only wrote %d of %d bytes: %s\n", res, fr->datalen, strerror(errno)); 00089 return -1; 00090 } 00091 } 00092 return res; 00093 }
static int load_module | ( | void | ) | [static] |
Definition at line 105 of file format_jpeg.c.
References ast_image_register(), AST_MODULE_LOAD_FAILURE, and AST_MODULE_LOAD_SUCCESS.
00106 { 00107 if (ast_image_register(&jpeg_format)) 00108 return AST_MODULE_LOAD_FAILURE; 00109 return AST_MODULE_LOAD_SUCCESS; 00110 }
static int unload_module | ( | void | ) | [static] |
Definition at line 112 of file format_jpeg.c.
References ast_image_unregister().
00113 { 00114 ast_image_unregister(&jpeg_format); 00115 00116 return 0; 00117 }
struct ast_imager jpeg_format [static] |
Definition at line 95 of file format_jpeg.c.