#include "asterisk.h"
#include "asterisk/mod_format.h"
#include "asterisk/module.h"
#include "asterisk/endian.h"
Go to the source code of this file.
Defines | |
#define | ILBC_BUF_SIZE 50 |
#define | ILBC_SAMPLES 240 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static struct ast_frame * | ilbc_read (struct ast_filestream *s, int *whennext) |
static int | ilbc_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | ilbc_tell (struct ast_filestream *fs) |
static int | ilbc_trunc (struct ast_filestream *fs) |
static int | ilbc_write (struct ast_filestream *fs, 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 = "Raw iLBC data" , .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 = "a9c98e5d177805051735cb5b0b16b0a0" , .load = load_module, .unload = unload_module, .load_pri = 10, } |
static struct ast_module_info * | ast_module_info = &__mod_info |
static struct ast_format | ilbc_f |
Definition in file format_ilbc.c.
#define ILBC_BUF_SIZE 50 |
Definition at line 40 of file format_ilbc.c.
Referenced by ilbc_read(), ilbc_seek(), and ilbc_tell().
#define ILBC_SAMPLES 240 |
Definition at line 41 of file format_ilbc.c.
static void __reg_module | ( | void | ) | [static] |
Definition at line 150 of file format_ilbc.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 150 of file format_ilbc.c.
static struct ast_frame* ilbc_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 43 of file format_ilbc.c.
References AST_FORMAT_ILBC, AST_FRAME_SET_BUFFER, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), errno, ILBC_BUF_SIZE, ILBC_SAMPLES, LOG_WARNING, and s.
00044 { 00045 int res; 00046 /* Send a frame from the file to the appropriate channel */ 00047 s->fr.frametype = AST_FRAME_VOICE; 00048 s->fr.subclass = AST_FORMAT_ILBC; 00049 s->fr.mallocd = 0; 00050 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, ILBC_BUF_SIZE); 00051 if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { 00052 if (res) 00053 ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); 00054 return NULL; 00055 } 00056 *whennext = s->fr.samples = ILBC_SAMPLES; 00057 return &s->fr; 00058 }
static int ilbc_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
Definition at line 82 of file format_ilbc.c.
References ast_filestream::f, ILBC_BUF_SIZE, ILBC_SAMPLES, ast_frame::offset, and SEEK_FORCECUR.
00083 { 00084 long bytes; 00085 off_t min,cur,max,offset=0; 00086 min = 0; 00087 cur = ftello(fs->f); 00088 fseeko(fs->f, 0, SEEK_END); 00089 max = ftello(fs->f); 00090 00091 bytes = ILBC_BUF_SIZE * (sample_offset / ILBC_SAMPLES); 00092 if (whence == SEEK_SET) 00093 offset = bytes; 00094 else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) 00095 offset = cur + bytes; 00096 else if (whence == SEEK_END) 00097 offset = max - bytes; 00098 if (whence != SEEK_FORCECUR) { 00099 offset = (offset > max)?max:offset; 00100 } 00101 /* protect against seeking beyond begining. */ 00102 offset = (offset < min)?min:offset; 00103 if (fseeko(fs->f, offset, SEEK_SET) < 0) 00104 return -1; 00105 return 0; 00106 }
static off_t ilbc_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 116 of file format_ilbc.c.
References ast_filestream::f, ILBC_BUF_SIZE, ILBC_SAMPLES, and ast_frame::offset.
00117 { 00118 off_t offset = ftello(fs->f); 00119 return (offset/ILBC_BUF_SIZE)*ILBC_SAMPLES; 00120 }
static int ilbc_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 108 of file format_ilbc.c.
References ast_filestream::f.
00109 { 00110 /* Truncate file to current length */ 00111 if (ftruncate(fileno(fs->f), ftello(fs->f)) < 0) 00112 return -1; 00113 return 0; 00114 }
static int ilbc_write | ( | struct ast_filestream * | fs, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 60 of file format_ilbc.c.
References AST_FORMAT_ILBC, AST_FRAME_VOICE, ast_log(), errno, ast_filestream::f, f, fwrite, and LOG_WARNING.
00061 { 00062 int res; 00063 if (f->frametype != AST_FRAME_VOICE) { 00064 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00065 return -1; 00066 } 00067 if (f->subclass != AST_FORMAT_ILBC) { 00068 ast_log(LOG_WARNING, "Asked to write non-iLBC frame (%d)!\n", f->subclass); 00069 return -1; 00070 } 00071 if (f->datalen % 50) { 00072 ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 50\n", f->datalen); 00073 return -1; 00074 } 00075 if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) { 00076 ast_log(LOG_WARNING, "Bad write (%d/50): %s\n", res, strerror(errno)); 00077 return -1; 00078 } 00079 return 0; 00080 }
static int load_module | ( | void | ) | [static] |
Definition at line 134 of file format_ilbc.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and ilbc_f.
00135 { 00136 if (ast_format_register(&ilbc_f)) 00137 return AST_MODULE_LOAD_FAILURE; 00138 return AST_MODULE_LOAD_SUCCESS; 00139 }
static int unload_module | ( | void | ) | [static] |
Definition at line 141 of file format_ilbc.c.
References ast_format_unregister(), ilbc_f, and ast_format::name.
00142 { 00143 return ast_format_unregister(ilbc_f.name); 00144 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Raw iLBC data" , .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 = "a9c98e5d177805051735cb5b0b16b0a0" , .load = load_module, .unload = unload_module, .load_pri = 10, } [static] |
Definition at line 150 of file format_ilbc.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 150 of file format_ilbc.c.
struct ast_format ilbc_f [static] |