#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_LOAD_ORDER , .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 = "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 | vox_f |
Definition in file format_vox.c.
#define BUF_SIZE 80 |
Definition at line 39 of file format_vox.c.
#define VOX_SAMPLES 160 |
Definition at line 40 of file format_vox.c.
static void __reg_module | ( | void | ) | [static] |
Definition at line 165 of file format_vox.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 165 of file format_vox.c.
static int load_module | ( | void | ) | [static] |
Definition at line 149 of file format_vox.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and vox_f.
00150 { 00151 if (ast_format_register(&vox_f)) 00152 return AST_MODULE_LOAD_FAILURE; 00153 return AST_MODULE_LOAD_SUCCESS; 00154 }
static int unload_module | ( | void | ) | [static] |
Definition at line 156 of file format_vox.c.
References ast_format_unregister(), ast_format::name, and vox_f.
00157 { 00158 return ast_format_unregister(vox_f.name); 00159 }
static struct ast_frame* vox_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 42 of file format_vox.c.
References AST_FORMAT_ADPCM, 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, LOG_WARNING, ast_frame::mallocd, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.
00043 { 00044 int res; 00045 00046 /* Send a frame from the file to the appropriate channel */ 00047 s->fr.frametype = AST_FRAME_VOICE; 00048 s->fr.subclass.codec = AST_FORMAT_ADPCM; 00049 s->fr.mallocd = 0; 00050 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); 00051 if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) < 1) { 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 = res * 2; 00057 s->fr.datalen = res; 00058 return &s->fr; 00059 }
static int vox_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
Definition at line 79 of file format_vox.c.
References ast_log(), AST_LOG_WARNING, errno, ast_filestream::f, ast_frame::offset, and SEEK_FORCECUR.
00080 { 00081 off_t offset = 0, min = 0, cur, max, distance; 00082 00083 if ((cur = ftello(fs->f)) < 0) { 00084 ast_log(AST_LOG_WARNING, "Unable to determine current position in g719 filestream %p: %s\n", fs, strerror(errno)); 00085 return -1; 00086 } 00087 00088 if (fseeko(fs->f, 0, SEEK_END) < 0) { 00089 ast_log(AST_LOG_WARNING, "Unable to seek to end of g719 filestream %p: %s\n", fs, strerror(errno)); 00090 return -1; 00091 } 00092 00093 if ((max = ftello(fs->f)) < 0) { 00094 ast_log(AST_LOG_WARNING, "Unable to determine max position in g719 filestream %p: %s\n", fs, strerror(errno)); 00095 return -1; 00096 } 00097 00098 /* have to fudge to frame here, so not fully to sample */ 00099 distance = sample_offset/2; 00100 if (whence == SEEK_SET) { 00101 offset = distance; 00102 } else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) { 00103 offset = distance + cur; 00104 } else if (whence == SEEK_END) { 00105 offset = max - distance; 00106 } 00107 if (whence != SEEK_FORCECUR) { 00108 offset = (offset > max)?max:offset; 00109 offset = (offset < min)?min:offset; 00110 } 00111 return fseeko(fs->f, offset, SEEK_SET); 00112 }
static off_t vox_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 130 of file format_vox.c.
References ast_filestream::f, and ast_frame::offset.
00131 { 00132 off_t offset; 00133 offset = ftello(fs->f) << 1; 00134 return offset; 00135 }
static int vox_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 114 of file format_vox.c.
References ast_log(), AST_LOG_WARNING, errno, and ast_filestream::f.
00115 { 00116 int fd; 00117 off_t cur; 00118 00119 if ((fd = fileno(fs->f)) < 0) { 00120 ast_log(AST_LOG_WARNING, "Unable to determine file descriptor for vox filestream %p: %s\n", fs, strerror(errno)); 00121 return -1; 00122 } 00123 if ((cur = ftello(fs->f)) < 0) { 00124 ast_log(AST_LOG_WARNING, "Unable to determine current position in vox filestream %p: %s\n", fs, strerror(errno)); 00125 return -1; 00126 } 00127 /* Truncate file to current length */ 00128 return ftruncate(fd, cur);}
static int vox_write | ( | struct ast_filestream * | s, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 61 of file format_vox.c.
References AST_FORMAT_ADPCM, AST_FRAME_VOICE, ast_getformatname(), ast_log(), errno, ast_filestream::f, f, and LOG_WARNING.
00062 { 00063 int res; 00064 if (f->frametype != AST_FRAME_VOICE) { 00065 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00066 return -1; 00067 } 00068 if (f->subclass.codec != AST_FORMAT_ADPCM) { 00069 ast_log(LOG_WARNING, "Asked to write non-ADPCM frame (%s)!\n", ast_getformatname(f->subclass.codec)); 00070 return -1; 00071 } 00072 if ((res = fwrite(f->data.ptr, 1, f->datalen, s->f)) != f->datalen) { 00073 ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno)); 00074 return -1; 00075 } 00076 return 0; 00077 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .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 = "ac1f6a56484a8820659555499174e588" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND } [static] |
Definition at line 165 of file format_vox.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 165 of file format_vox.c.
struct ast_format vox_f [static] |