#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 = "ac1f6a56484a8820659555499174e588" , .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 | ilbc_f |
Definition in file format_ilbc.c.
#define ILBC_BUF_SIZE 50 |
Definition at line 44 of file format_ilbc.c.
Referenced by ilbc_read(), ilbc_seek(), and ilbc_tell().
#define ILBC_SAMPLES 240 |
Definition at line 45 of file format_ilbc.c.
static void __reg_module | ( | void | ) | [static] |
Definition at line 163 of file format_ilbc.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 163 of file format_ilbc.c.
static struct ast_frame* ilbc_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 47 of file format_ilbc.c.
References AST_FORMAT_ILBC, 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, ILBC_BUF_SIZE, ILBC_SAMPLES, LOG_WARNING, ast_frame::mallocd, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.
00048 { 00049 int res; 00050 /* Send a frame from the file to the appropriate channel */ 00051 s->fr.frametype = AST_FRAME_VOICE; 00052 s->fr.subclass.codec = AST_FORMAT_ILBC; 00053 s->fr.mallocd = 0; 00054 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, ILBC_BUF_SIZE); 00055 if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { 00056 if (res) 00057 ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); 00058 return NULL; 00059 } 00060 *whennext = s->fr.samples = ILBC_SAMPLES; 00061 return &s->fr; 00062 }
static int ilbc_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
Definition at line 86 of file format_ilbc.c.
References ast_filestream::f, ILBC_BUF_SIZE, ILBC_SAMPLES, ast_frame::offset, and SEEK_FORCECUR.
00087 { 00088 long bytes; 00089 off_t min,cur,max,offset=0; 00090 min = 0; 00091 cur = ftello(fs->f); 00092 fseeko(fs->f, 0, SEEK_END); 00093 max = ftello(fs->f); 00094 00095 bytes = ILBC_BUF_SIZE * (sample_offset / ILBC_SAMPLES); 00096 if (whence == SEEK_SET) 00097 offset = bytes; 00098 else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) 00099 offset = cur + bytes; 00100 else if (whence == SEEK_END) 00101 offset = max - bytes; 00102 if (whence != SEEK_FORCECUR) { 00103 offset = (offset > max)?max:offset; 00104 } 00105 /* protect against seeking beyond begining. */ 00106 offset = (offset < min)?min:offset; 00107 if (fseeko(fs->f, offset, SEEK_SET) < 0) 00108 return -1; 00109 return 0; 00110 }
static off_t ilbc_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 129 of file format_ilbc.c.
References ast_filestream::f, ILBC_BUF_SIZE, ILBC_SAMPLES, and ast_frame::offset.
00130 { 00131 off_t offset = ftello(fs->f); 00132 return (offset/ILBC_BUF_SIZE)*ILBC_SAMPLES; 00133 }
static int ilbc_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 112 of file format_ilbc.c.
References ast_log(), AST_LOG_WARNING, errno, and ast_filestream::f.
00113 { 00114 int fd; 00115 off_t cur; 00116 00117 if ((fd = fileno(fs->f)) < 0) { 00118 ast_log(AST_LOG_WARNING, "Unable to determine file descriptor for iLBC filestream %p: %s\n", fs, strerror(errno)); 00119 return -1; 00120 } 00121 if ((cur = ftello(fs->f)) < 0) { 00122 ast_log(AST_LOG_WARNING, "Unable to determine current position in iLBC filestream %p: %s\n", fs, strerror(errno)); 00123 return -1; 00124 } 00125 /* Truncate file to current length */ 00126 return ftruncate(fd, cur); 00127 }
static int ilbc_write | ( | struct ast_filestream * | fs, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 64 of file format_ilbc.c.
References AST_FORMAT_ILBC, AST_FRAME_VOICE, ast_getformatname(), ast_log(), errno, ast_filestream::f, f, and LOG_WARNING.
00065 { 00066 int res; 00067 if (f->frametype != AST_FRAME_VOICE) { 00068 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00069 return -1; 00070 } 00071 if (f->subclass.codec != AST_FORMAT_ILBC) { 00072 ast_log(LOG_WARNING, "Asked to write non-iLBC frame (%s)!\n", ast_getformatname(f->subclass.codec)); 00073 return -1; 00074 } 00075 if (f->datalen % 50) { 00076 ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 50\n", f->datalen); 00077 return -1; 00078 } 00079 if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) { 00080 ast_log(LOG_WARNING, "Bad write (%d/50): %s\n", res, strerror(errno)); 00081 return -1; 00082 } 00083 return 0; 00084 }
static int load_module | ( | void | ) | [static] |
Definition at line 147 of file format_ilbc.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and ilbc_f.
00148 { 00149 if (ast_format_register(&ilbc_f)) 00150 return AST_MODULE_LOAD_FAILURE; 00151 return AST_MODULE_LOAD_SUCCESS; 00152 }
static int unload_module | ( | void | ) | [static] |
Definition at line 154 of file format_ilbc.c.
References ast_format_unregister(), ilbc_f, and ast_format::name.
00155 { 00156 return ast_format_unregister(ilbc_f.name); 00157 }
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 = "ac1f6a56484a8820659555499174e588" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND } [static] |
Definition at line 163 of file format_ilbc.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 163 of file format_ilbc.c.
struct ast_format ilbc_f [static] |