#include "asterisk.h"
#include "asterisk/mod_format.h"
#include "asterisk/module.h"
Go to the source code of this file.
Defines | |
#define | G723_MAX_SIZE 1024 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static struct ast_frame * | g723_read (struct ast_filestream *s, int *whennext) |
static int | g723_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | g723_tell (struct ast_filestream *fs) |
static int | g723_trunc (struct ast_filestream *fs) |
static int | g723_write (struct ast_filestream *s, struct ast_frame *f) |
static int | load_module (void) |
static int | unload_module (void) |
Variables | |
static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "G.723.1 Simple Timestamp File Format" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "8586c2a7d357cb591cc3a6607a8f62d1" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND } |
static struct ast_module_info * | ast_module_info = &__mod_info |
static struct ast_format | g723_1_f |
Definition in file format_g723.c.
#define G723_MAX_SIZE 1024 |
static void __reg_module | ( | void | ) | [static] |
Definition at line 156 of file format_g723.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 156 of file format_g723.c.
static struct ast_frame* g723_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 37 of file format_g723.c.
References AST_FORMAT_G723_1, AST_FRAME_SET_BUFFER, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), ast_filestream::buf, ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, errno, ast_filestream::f, ast_filestream::fr, ast_frame::frametype, G723_MAX_SIZE, LOG_WARNING, ast_frame::mallocd, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.
00038 { 00039 unsigned short size; 00040 int res; 00041 int delay; 00042 /* Read the delay for the next packet, and schedule again if necessary */ 00043 /* XXX is this ignored ? */ 00044 if (fread(&delay, 1, 4, s->f) == 4) 00045 delay = ntohl(delay); 00046 else 00047 delay = -1; 00048 if (fread(&size, 1, 2, s->f) != 2) { 00049 /* Out of data, or the file is no longer valid. In any case 00050 go ahead and stop the stream */ 00051 return NULL; 00052 } 00053 /* Looks like we have a frame to read from here */ 00054 size = ntohs(size); 00055 if (size > G723_MAX_SIZE) { 00056 ast_log(LOG_WARNING, "Size %d is invalid\n", size); 00057 /* The file is apparently no longer any good, as we 00058 shouldn't ever get frames even close to this 00059 size. */ 00060 return NULL; 00061 } 00062 /* Read the data into the buffer */ 00063 s->fr.frametype = AST_FRAME_VOICE; 00064 s->fr.subclass.codec = AST_FORMAT_G723_1; 00065 s->fr.mallocd = 0; 00066 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, size); 00067 if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != size) { 00068 ast_log(LOG_WARNING, "Short read (%d of %d bytes) (%s)!\n", res, size, strerror(errno)); 00069 return NULL; 00070 } 00071 *whennext = s->fr.samples = 240; 00072 return &s->fr; 00073 }
static int g723_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
static off_t g723_tell | ( | struct ast_filestream * | fs | ) | [static] |
static int g723_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 115 of file format_g723.c.
References ast_filestream::f.
00116 { 00117 /* Truncate file to current length */ 00118 if (ftruncate(fileno(fs->f), ftello(fs->f)) < 0) 00119 return -1; 00120 return 0; 00121 }
static int g723_write | ( | struct ast_filestream * | s, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 75 of file format_g723.c.
References AST_FORMAT_G723_1, AST_FRAME_VOICE, ast_log(), errno, ast_filestream::f, f, fwrite, and LOG_WARNING.
00076 { 00077 uint32_t delay; 00078 uint16_t size; 00079 int res; 00080 /* XXX there used to be a check s->fr means a read stream */ 00081 if (f->frametype != AST_FRAME_VOICE) { 00082 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00083 return -1; 00084 } 00085 if (f->subclass.codec != AST_FORMAT_G723_1) { 00086 ast_log(LOG_WARNING, "Asked to write non-g723 frame!\n"); 00087 return -1; 00088 } 00089 delay = 0; 00090 if (f->datalen <= 0) { 00091 ast_log(LOG_WARNING, "Short frame ignored (%d bytes long?)\n", f->datalen); 00092 return 0; 00093 } 00094 if ((res = fwrite(&delay, 1, 4, s->f)) != 4) { 00095 ast_log(LOG_WARNING, "Unable to write delay: res=%d (%s)\n", res, strerror(errno)); 00096 return -1; 00097 } 00098 size = htons(f->datalen); 00099 if ((res = fwrite(&size, 1, 2, s->f)) != 2) { 00100 ast_log(LOG_WARNING, "Unable to write size: res=%d (%s)\n", res, strerror(errno)); 00101 return -1; 00102 } 00103 if ((res = fwrite(f->data.ptr, 1, f->datalen, s->f)) != f->datalen) { 00104 ast_log(LOG_WARNING, "Unable to write frame: res=%d (%s)\n", res, strerror(errno)); 00105 return -1; 00106 } 00107 return 0; 00108 }
static int load_module | ( | void | ) | [static] |
Definition at line 140 of file format_g723.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and g723_1_f.
00141 { 00142 if (ast_format_register(&g723_1_f)) 00143 return AST_MODULE_LOAD_FAILURE; 00144 return AST_MODULE_LOAD_SUCCESS; 00145 }
static int unload_module | ( | void | ) | [static] |
Definition at line 147 of file format_g723.c.
References ast_format_unregister(), g723_1_f, and ast_format::name.
00148 { 00149 return ast_format_unregister(g723_1_f.name); 00150 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "G.723.1 Simple Timestamp File Format" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "8586c2a7d357cb591cc3a6607a8f62d1" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND } [static] |
Definition at line 156 of file format_g723.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 156 of file format_g723.c.
struct ast_format g723_1_f [static] |