Save to raw, headerless G729 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 | 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 __MODULE_INFO_SECTION | __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Raw G729 data" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .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 |
Save to raw, headerless G729 data.
Definition in file format_g729.c.
#define BUF_SIZE 20 |
Definition at line 41 of file format_g729.c.
Referenced by g729_read(), g729_seek(), and g729_tell().
#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, read] |
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(), ast_filestream::buf, BUF_SIZE, 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.
{ int res; /* Send a frame from the file to the appropriate channel */ s->fr.frametype = AST_FRAME_VOICE; s->fr.subclass = AST_FORMAT_G729A; s->fr.mallocd = 0; s->fr.samples = G729A_SAMPLES; AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { if (res && (res != 10)) /* XXX what for ? */ ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); return NULL; } *whennext = s->fr.samples; return &s->fr; }
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.
{ long bytes; off_t min,cur,max,offset=0; min = 0; cur = ftello(fs->f); fseeko(fs->f, 0, SEEK_END); max = ftello(fs->f); bytes = BUF_SIZE * (sample_offset / G729A_SAMPLES); if (whence == SEEK_SET) offset = bytes; else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) offset = cur + bytes; else if (whence == SEEK_END) offset = max - bytes; if (whence != SEEK_FORCECUR) { offset = (offset > max)?max:offset; } /* protect against seeking beyond begining. */ offset = (offset < min)?min:offset; if (fseeko(fs->f, offset, SEEK_SET) < 0) return -1; return 0; }
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.
{ off_t offset = ftello(fs->f); return (offset/BUF_SIZE)*G729A_SAMPLES; }
static int g729_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 110 of file format_g729.c.
References ast_filestream::f.
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(), ast_frame::data, ast_frame::datalen, errno, ast_filestream::f, ast_frame::frametype, fwrite, LOG_WARNING, ast_frame::ptr, and ast_frame::subclass.
{ int res; if (f->frametype != AST_FRAME_VOICE) { ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); return -1; } if (f->subclass != AST_FORMAT_G729A) { ast_log(LOG_WARNING, "Asked to write non-G729 frame (%d)!\n", f->subclass); return -1; } if (f->datalen % 10) { ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 10\n", f->datalen); return -1; } if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) { ast_log(LOG_WARNING, "Bad write (%d/10): %s\n", res, strerror(errno)); return -1; } return 0; }
static int load_module | ( | void | ) | [static] |
Definition at line 136 of file format_g729.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, and AST_MODULE_LOAD_SUCCESS.
{ if (ast_format_register(&g729_f)) return AST_MODULE_LOAD_FAILURE; return AST_MODULE_LOAD_SUCCESS; }
static int unload_module | ( | void | ) | [static] |
Definition at line 143 of file format_g729.c.
References ast_format_unregister(), and ast_format::name.
{ return ast_format_unregister(g729_f.name); }
struct ast_module_info __MODULE_INFO_SECTION __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Raw G729 data" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .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] |
Definition at line 124 of file format_g729.c.