#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 G729 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 | g729_f |
Definition in file format_g729.c.
#define BUF_SIZE 20 |
Definition at line 41 of file format_g729.c.
#define G729A_SAMPLES 160 |
Definition at line 42 of file format_g729.c.
Referenced by g729_read(), g729_seek(), and g729_tell().
static void __reg_module | ( | void | ) | [static] |
Definition at line 152 of file format_g729.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 152 of file format_g729.c.
static struct ast_frame* g729_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 44 of file format_g729.c.
References AST_FORMAT_G729A, AST_FRAME_SET_BUFFER, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), BUF_SIZE, errno, G729A_SAMPLES, LOG_WARNING, and s.
00045 { 00046 int res; 00047 /* Send a frame from the file to the appropriate channel */ 00048 s->fr.frametype = AST_FRAME_VOICE; 00049 s->fr.subclass = AST_FORMAT_G729A; 00050 s->fr.mallocd = 0; 00051 s->fr.samples = G729A_SAMPLES; 00052 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); 00053 if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { 00054 if (res && (res != 10)) /* XXX what for ? */ 00055 ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); 00056 return NULL; 00057 } 00058 *whennext = s->fr.samples; 00059 return &s->fr; 00060 }
static int g729_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
Definition at line 84 of file format_g729.c.
References BUF_SIZE, ast_filestream::f, G729A_SAMPLES, ast_frame::offset, and SEEK_FORCECUR.
00085 { 00086 long bytes; 00087 off_t min,cur,max,offset=0; 00088 min = 0; 00089 cur = ftello(fs->f); 00090 fseeko(fs->f, 0, SEEK_END); 00091 max = ftello(fs->f); 00092 00093 bytes = BUF_SIZE * (sample_offset / G729A_SAMPLES); 00094 if (whence == SEEK_SET) 00095 offset = bytes; 00096 else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) 00097 offset = cur + bytes; 00098 else if (whence == SEEK_END) 00099 offset = max - bytes; 00100 if (whence != SEEK_FORCECUR) { 00101 offset = (offset > max)?max:offset; 00102 } 00103 /* protect against seeking beyond begining. */ 00104 offset = (offset < min)?min:offset; 00105 if (fseeko(fs->f, offset, SEEK_SET) < 0) 00106 return -1; 00107 return 0; 00108 }
static off_t g729_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 118 of file format_g729.c.
References BUF_SIZE, ast_filestream::f, G729A_SAMPLES, and ast_frame::offset.
00119 { 00120 off_t offset = ftello(fs->f); 00121 return (offset/BUF_SIZE)*G729A_SAMPLES; 00122 }
static int g729_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 110 of file format_g729.c.
References ast_filestream::f.
00111 { 00112 /* Truncate file to current length */ 00113 if (ftruncate(fileno(fs->f), ftello(fs->f)) < 0) 00114 return -1; 00115 return 0; 00116 }
static int g729_write | ( | struct ast_filestream * | fs, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 62 of file format_g729.c.
References AST_FORMAT_G729A, AST_FRAME_VOICE, ast_log(), errno, ast_filestream::f, f, fwrite, and LOG_WARNING.
00063 { 00064 int res; 00065 if (f->frametype != AST_FRAME_VOICE) { 00066 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00067 return -1; 00068 } 00069 if (f->subclass != AST_FORMAT_G729A) { 00070 ast_log(LOG_WARNING, "Asked to write non-G729 frame (%d)!\n", f->subclass); 00071 return -1; 00072 } 00073 if (f->datalen % 10) { 00074 ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 10\n", f->datalen); 00075 return -1; 00076 } 00077 if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) { 00078 ast_log(LOG_WARNING, "Bad write (%d/10): %s\n", res, strerror(errno)); 00079 return -1; 00080 } 00081 return 0; 00082 }
static int load_module | ( | void | ) | [static] |
Definition at line 136 of file format_g729.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and g729_f.
00137 { 00138 if (ast_format_register(&g729_f)) 00139 return AST_MODULE_LOAD_FAILURE; 00140 return AST_MODULE_LOAD_SUCCESS; 00141 }
static int unload_module | ( | void | ) | [static] |
Definition at line 143 of file format_g729.c.
References ast_format_unregister(), g729_f, and ast_format::name.
00144 { 00145 return ast_format_unregister(g729_f.name); 00146 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Raw G729 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 152 of file format_g729.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 152 of file format_g729.c.
struct ast_format g729_f [static] |