Save to raw, headerless iLBC data. More...
#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 | |
AST_MODULE_INFO (ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER,"Raw iLBC data",.load=load_module,.unload=unload_module,.load_pri=AST_MODPRI_APP_DEPEND) | |
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_format | ilbc_f |
Save to raw, headerless iLBC data.
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.
AST_MODULE_INFO | ( | ASTERISK_GPL_KEY | , | |
AST_MODFLAG_LOAD_ORDER | , | |||
"Raw iLBC data" | , | |||
. | load = load_module , |
|||
. | unload = unload_module , |
|||
. | load_pri = AST_MODPRI_APP_DEPEND | |||
) |
static struct ast_frame* ilbc_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static, read] |
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(), ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, errno, ast_filestream::f, ast_frame::frametype, LOG_WARNING, ast_frame::ptr, and ast_frame::subclass.
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, and AST_MODULE_LOAD_SUCCESS.
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(), and ast_format::name.
00155 { 00156 return ast_format_unregister(ilbc_f.name); 00157 }
struct ast_format ilbc_f [static] |
Definition at line 135 of file format_ilbc.c.