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 | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
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_module_info __MODULE_INFO_SECTION | __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "jpeg (joint picture experts group) image format" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = 10, } |
static struct ast_module_info * | ast_module_info = &__mod_info |
static struct ast_imager | jpeg_format |
static void __reg_module | ( | void | ) | [static] |
Definition at line 119 of file format_jpeg.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 119 of file format_jpeg.c.
static int jpeg_identify | ( | int | fd | ) | [static] |
Definition at line 58 of file format_jpeg.c.
References buf.
{ char buf[10]; int res; res = read(fd, buf, sizeof(buf)); if (res < sizeof(buf)) return 0; if (memcmp(buf + 6, "JFIF", 4)) return 0; return 1; }
static struct ast_frame* jpeg_read_image | ( | int | fd, |
int | len | ||
) | [static, read] |
Definition at line 36 of file format_jpeg.c.
References AST_FORMAT_JPEG, AST_FRAME_IMAGE, ast_frisolate(), ast_log(), buf, ast_frame::data, ast_frame::datalen, errno, ast_frame::frametype, len(), LOG_WARNING, ast_frame::ptr, ast_frame::src, and ast_frame::subclass.
{ struct ast_frame fr; int res; char buf[65536]; if (len > sizeof(buf) || len < 0) { ast_log(LOG_WARNING, "JPEG image too large to read\n"); return NULL; } res = read(fd, buf, len); if (res < len) { ast_log(LOG_WARNING, "Only read %d of %d bytes: %s\n", res, len, strerror(errno)); } memset(&fr, 0, sizeof(fr)); fr.frametype = AST_FRAME_IMAGE; fr.subclass = AST_FORMAT_JPEG; fr.data.ptr = buf; fr.src = "JPEG Read"; fr.datalen = len; return ast_frisolate(&fr); }
static int jpeg_write_image | ( | int | fd, |
struct ast_frame * | fr | ||
) | [static] |
Definition at line 70 of file format_jpeg.c.
References AST_FORMAT_JPEG, AST_FRAME_IMAGE, ast_log(), ast_frame::data, ast_frame::datalen, errno, ast_frame::frametype, LOG_WARNING, ast_frame::ptr, and ast_frame::subclass.
{ int res=0; if (fr->frametype != AST_FRAME_IMAGE) { ast_log(LOG_WARNING, "Not an image\n"); return -1; } if (fr->subclass != AST_FORMAT_JPEG) { ast_log(LOG_WARNING, "Not a jpeg image\n"); return -1; } if (fr->datalen) { res = write(fd, fr->data.ptr, fr->datalen); if (res != fr->datalen) { ast_log(LOG_WARNING, "Only wrote %d of %d bytes: %s\n", res, fr->datalen, strerror(errno)); return -1; } } return res; }
static int load_module | ( | void | ) | [static] |
Definition at line 101 of file format_jpeg.c.
References ast_image_register(), AST_MODULE_LOAD_FAILURE, and AST_MODULE_LOAD_SUCCESS.
{ if (ast_image_register(&jpeg_format)) return AST_MODULE_LOAD_FAILURE; return AST_MODULE_LOAD_SUCCESS; }
static int unload_module | ( | void | ) | [static] |
Definition at line 108 of file format_jpeg.c.
References ast_image_unregister().
{ ast_image_unregister(&jpeg_format); return 0; }
struct ast_module_info __MODULE_INFO_SECTION __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "jpeg (joint picture experts group) image format" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = 10, } [static] |
Definition at line 119 of file format_jpeg.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 119 of file format_jpeg.c.
struct ast_imager jpeg_format [static] |
Definition at line 91 of file format_jpeg.c.