#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 80 |
#define | VOX_SAMPLES 160 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static int | load_module (void) |
static int | unload_module (void) |
static struct ast_frame * | vox_read (struct ast_filestream *s, int *whennext) |
static int | vox_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | vox_tell (struct ast_filestream *fs) |
static int | vox_trunc (struct ast_filestream *fs) |
static int | vox_write (struct ast_filestream *s, struct ast_frame *f) |
Variables | |
static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Dialogic VOX (ADPCM) 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 = "068e67f60f50dd9ee86464c05884a49d" , .load = load_module, .unload = unload_module, } |
static const struct ast_module_info * | ast_module_info = &__mod_info |
static struct ast_format | vox_f |
Definition in file format_vox.c.
#define BUF_SIZE 80 |
Definition at line 35 of file format_vox.c.
#define VOX_SAMPLES 160 |
Definition at line 36 of file format_vox.c.
static void __reg_module | ( | void | ) | [static] |
Definition at line 135 of file format_vox.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 135 of file format_vox.c.
static int load_module | ( | void | ) | [static] |
Definition at line 123 of file format_vox.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and vox_f.
00124 { 00125 if (ast_format_register(&vox_f)) 00126 return AST_MODULE_LOAD_FAILURE; 00127 return AST_MODULE_LOAD_SUCCESS; 00128 }
static int unload_module | ( | void | ) | [static] |
Definition at line 130 of file format_vox.c.
References ast_format_unregister(), ast_format::name, and vox_f.
00131 { 00132 return ast_format_unregister(vox_f.name); 00133 }
static struct ast_frame* vox_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 38 of file format_vox.c.
References AST_FORMAT_ADPCM, AST_FRAME_SET_BUFFER, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), BUF_SIZE, errno, LOG_WARNING, and s.
00039 { 00040 int res; 00041 00042 /* Send a frame from the file to the appropriate channel */ 00043 s->fr.frametype = AST_FRAME_VOICE; 00044 s->fr.subclass = AST_FORMAT_ADPCM; 00045 s->fr.mallocd = 0; 00046 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); 00047 if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) < 1) { 00048 if (res) 00049 ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); 00050 return NULL; 00051 } 00052 *whennext = s->fr.samples = res * 2; 00053 s->fr.datalen = res; 00054 return &s->fr; 00055 }
static int vox_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
Definition at line 75 of file format_vox.c.
References ast_filestream::f, ast_frame::offset, and SEEK_FORCECUR.
00076 { 00077 off_t offset=0,min,cur,max,distance; 00078 00079 min = 0; 00080 cur = ftello(fs->f); 00081 fseeko(fs->f, 0, SEEK_END); 00082 max = ftello(fs->f); 00083 00084 /* have to fudge to frame here, so not fully to sample */ 00085 distance = sample_offset/2; 00086 if(whence == SEEK_SET) 00087 offset = distance; 00088 else if(whence == SEEK_CUR || whence == SEEK_FORCECUR) 00089 offset = distance + cur; 00090 else if(whence == SEEK_END) 00091 offset = max - distance; 00092 if (whence != SEEK_FORCECUR) { 00093 offset = (offset > max)?max:offset; 00094 offset = (offset < min)?min:offset; 00095 } 00096 return fseeko(fs->f, offset, SEEK_SET); 00097 }
static off_t vox_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 104 of file format_vox.c.
References ast_filestream::f, and ast_frame::offset.
00105 { 00106 off_t offset; 00107 offset = ftello(fs->f) << 1; 00108 return offset; 00109 }
static int vox_trunc | ( | struct ast_filestream * | fs | ) | [static] |
static int vox_write | ( | struct ast_filestream * | s, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 57 of file format_vox.c.
References AST_FORMAT_ADPCM, AST_FRAME_VOICE, ast_log(), errno, f, LOG_WARNING, and s.
00058 { 00059 int res; 00060 if (f->frametype != AST_FRAME_VOICE) { 00061 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00062 return -1; 00063 } 00064 if (f->subclass != AST_FORMAT_ADPCM) { 00065 ast_log(LOG_WARNING, "Asked to write non-ADPCM frame (%d)!\n", f->subclass); 00066 return -1; 00067 } 00068 if ((res = fwrite(f->data, 1, f->datalen, s->f)) != f->datalen) { 00069 ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno)); 00070 return -1; 00071 } 00072 return 0; 00073 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Dialogic VOX (ADPCM) 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 = "068e67f60f50dd9ee86464c05884a49d" , .load = load_module, .unload = unload_module, } [static] |
Definition at line 135 of file format_vox.c.
const struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 135 of file format_vox.c.
struct ast_format vox_f [static] |