#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 | BUF_SIZE 20 |
#define | G729A_SAMPLES 160 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static struct ast_frame * | g729_read (struct ast_filestream *s, int *whennext) |
static int | g729_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | g729_tell (struct ast_filestream *fs) |
static int | g729_trunc (struct ast_filestream *fs) |
static int | g729_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 G.729 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 = "88eaa8f5c1bd988bedd71113385e0886" , .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 | g729_f |
Definition in file format_g729.c.
#define BUF_SIZE 20 |
Definition at line 45 of file format_g729.c.
#define G729A_SAMPLES 160 |
Definition at line 46 of file format_g729.c.
Referenced by g729_read(), g729_seek(), and g729_tell().
static void __reg_module | ( | void | ) | [static] |
Definition at line 156 of file format_g729.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 156 of file format_g729.c.
static struct ast_frame* g729_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 48 of file format_g729.c.
References AST_FORMAT_G729A, AST_FRAME_SET_BUFFER, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), ast_filestream::buf, BUF_SIZE, ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, errno, ast_filestream::f, ast_filestream::fr, ast_frame::frametype, G729A_SAMPLES, LOG_WARNING, ast_frame::mallocd, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.
00049 { 00050 int res; 00051 /* Send a frame from the file to the appropriate channel */ 00052 s->fr.frametype = AST_FRAME_VOICE; 00053 s->fr.subclass.codec = AST_FORMAT_G729A; 00054 s->fr.mallocd = 0; 00055 s->fr.samples = G729A_SAMPLES; 00056 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); 00057 if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { 00058 if (res && (res != 10)) /* XXX what for ? */ 00059 ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); 00060 return NULL; 00061 } 00062 *whennext = s->fr.samples; 00063 return &s->fr; 00064 }
static int g729_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
Definition at line 88 of file format_g729.c.
References BUF_SIZE, ast_filestream::f, G729A_SAMPLES, ast_frame::offset, and SEEK_FORCECUR.
00089 { 00090 long bytes; 00091 off_t min,cur,max,offset=0; 00092 min = 0; 00093 cur = ftello(fs->f); 00094 fseeko(fs->f, 0, SEEK_END); 00095 max = ftello(fs->f); 00096 00097 bytes = BUF_SIZE * (sample_offset / G729A_SAMPLES); 00098 if (whence == SEEK_SET) 00099 offset = bytes; 00100 else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) 00101 offset = cur + bytes; 00102 else if (whence == SEEK_END) 00103 offset = max - bytes; 00104 if (whence != SEEK_FORCECUR) { 00105 offset = (offset > max)?max:offset; 00106 } 00107 /* protect against seeking beyond begining. */ 00108 offset = (offset < min)?min:offset; 00109 if (fseeko(fs->f, offset, SEEK_SET) < 0) 00110 return -1; 00111 return 0; 00112 }
static off_t g729_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 122 of file format_g729.c.
References BUF_SIZE, ast_filestream::f, G729A_SAMPLES, and ast_frame::offset.
00123 { 00124 off_t offset = ftello(fs->f); 00125 return (offset/BUF_SIZE)*G729A_SAMPLES; 00126 }
static int g729_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 114 of file format_g729.c.
References ast_filestream::f.
00115 { 00116 /* Truncate file to current length */ 00117 if (ftruncate(fileno(fs->f), ftello(fs->f)) < 0) 00118 return -1; 00119 return 0; 00120 }
static int g729_write | ( | struct ast_filestream * | fs, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 66 of file format_g729.c.
References AST_FORMAT_G729A, AST_FRAME_VOICE, ast_getformatname(), ast_log(), errno, ast_filestream::f, f, and LOG_WARNING.
00067 { 00068 int res; 00069 if (f->frametype != AST_FRAME_VOICE) { 00070 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00071 return -1; 00072 } 00073 if (f->subclass.codec != AST_FORMAT_G729A) { 00074 ast_log(LOG_WARNING, "Asked to write non-G729 frame (%s)!\n", ast_getformatname(f->subclass.codec)); 00075 return -1; 00076 } 00077 if (f->datalen % 10) { 00078 ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 10\n", f->datalen); 00079 return -1; 00080 } 00081 if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) { 00082 ast_log(LOG_WARNING, "Bad write (%d/10): %s\n", res, strerror(errno)); 00083 return -1; 00084 } 00085 return 0; 00086 }
static int load_module | ( | void | ) | [static] |
Definition at line 140 of file format_g729.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and g729_f.
00141 { 00142 if (ast_format_register(&g729_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_g729.c.
References ast_format_unregister(), g729_f, and ast_format::name.
00148 { 00149 return ast_format_unregister(g729_f.name); 00150 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Raw G.729 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 = "88eaa8f5c1bd988bedd71113385e0886" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND } [static] |
Definition at line 156 of file format_g729.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 156 of file format_g729.c.
struct ast_format g729_f [static] |