#include "asterisk.h"
#include "asterisk/mod_format.h"
#include "asterisk/module.h"
Go to the source code of this file.
Defines | |
#define | G723_MAX_SIZE 1024 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static struct ast_frame * | g723_read (struct ast_filestream *s, int *whennext) |
static int | g723_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | g723_tell (struct ast_filestream *fs) |
static int | g723_trunc (struct ast_filestream *fs) |
static int | g723_write (struct ast_filestream *s, 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 = "G.723.1 Simple Timestamp 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 | g723_1_f |
Definition in file format_g723.c.
#define G723_MAX_SIZE 1024 |
static void __reg_module | ( | void | ) | [static] |
Definition at line 169 of file format_g723.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 169 of file format_g723.c.
static struct ast_frame* g723_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 41 of file format_g723.c.
References AST_FORMAT_G723_1, 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, G723_MAX_SIZE, LOG_WARNING, ast_frame::mallocd, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.
00042 { 00043 unsigned short size; 00044 int res; 00045 int delay; 00046 /* Read the delay for the next packet, and schedule again if necessary */ 00047 /* XXX is this ignored ? */ 00048 if (fread(&delay, 1, 4, s->f) == 4) 00049 delay = ntohl(delay); 00050 else 00051 delay = -1; 00052 if (fread(&size, 1, 2, s->f) != 2) { 00053 /* Out of data, or the file is no longer valid. In any case 00054 go ahead and stop the stream */ 00055 return NULL; 00056 } 00057 /* Looks like we have a frame to read from here */ 00058 size = ntohs(size); 00059 if (size > G723_MAX_SIZE) { 00060 ast_log(LOG_WARNING, "Size %d is invalid\n", size); 00061 /* The file is apparently no longer any good, as we 00062 shouldn't ever get frames even close to this 00063 size. */ 00064 return NULL; 00065 } 00066 /* Read the data into the buffer */ 00067 s->fr.frametype = AST_FRAME_VOICE; 00068 s->fr.subclass.codec = AST_FORMAT_G723_1; 00069 s->fr.mallocd = 0; 00070 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, size); 00071 if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != size) { 00072 ast_log(LOG_WARNING, "Short read (%d of %d bytes) (%s)!\n", res, size, strerror(errno)); 00073 return NULL; 00074 } 00075 *whennext = s->fr.samples = 240; 00076 return &s->fr; 00077 }
static int g723_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
static off_t g723_tell | ( | struct ast_filestream * | fs | ) | [static] |
static int g723_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 119 of file format_g723.c.
References ast_log(), AST_LOG_WARNING, errno, and ast_filestream::f.
00120 { 00121 int fd; 00122 off_t cur; 00123 00124 if ((fd = fileno(fs->f)) < 0) { 00125 ast_log(AST_LOG_WARNING, "Unable to determine file descriptor for g723 filestream %p: %s\n", fs, strerror(errno)); 00126 return -1; 00127 } 00128 if ((cur = ftello(fs->f)) < 0) { 00129 ast_log(AST_LOG_WARNING, "Unable to determine current position in g723 filestream %p: %s\n", fs, strerror(errno)); 00130 return -1; 00131 } 00132 /* Truncate file to current length */ 00133 return ftruncate(fd, cur); 00134 }
static int g723_write | ( | struct ast_filestream * | s, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 79 of file format_g723.c.
References AST_FORMAT_G723_1, AST_FRAME_VOICE, ast_log(), errno, ast_filestream::f, f, and LOG_WARNING.
00080 { 00081 uint32_t delay; 00082 uint16_t size; 00083 int res; 00084 /* XXX there used to be a check s->fr means a read stream */ 00085 if (f->frametype != AST_FRAME_VOICE) { 00086 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00087 return -1; 00088 } 00089 if (f->subclass.codec != AST_FORMAT_G723_1) { 00090 ast_log(LOG_WARNING, "Asked to write non-g723 frame!\n"); 00091 return -1; 00092 } 00093 delay = 0; 00094 if (f->datalen <= 0) { 00095 ast_log(LOG_WARNING, "Short frame ignored (%d bytes long?)\n", f->datalen); 00096 return 0; 00097 } 00098 if ((res = fwrite(&delay, 1, 4, s->f)) != 4) { 00099 ast_log(LOG_WARNING, "Unable to write delay: res=%d (%s)\n", res, strerror(errno)); 00100 return -1; 00101 } 00102 size = htons(f->datalen); 00103 if ((res = fwrite(&size, 1, 2, s->f)) != 2) { 00104 ast_log(LOG_WARNING, "Unable to write size: res=%d (%s)\n", res, strerror(errno)); 00105 return -1; 00106 } 00107 if ((res = fwrite(f->data.ptr, 1, f->datalen, s->f)) != f->datalen) { 00108 ast_log(LOG_WARNING, "Unable to write frame: res=%d (%s)\n", res, strerror(errno)); 00109 return -1; 00110 } 00111 return 0; 00112 }
static int load_module | ( | void | ) | [static] |
Definition at line 153 of file format_g723.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and g723_1_f.
00154 { 00155 if (ast_format_register(&g723_1_f)) 00156 return AST_MODULE_LOAD_FAILURE; 00157 return AST_MODULE_LOAD_SUCCESS; 00158 }
static int unload_module | ( | void | ) | [static] |
Definition at line 160 of file format_g723.c.
References ast_format_unregister(), g723_1_f, and ast_format::name.
00161 { 00162 return ast_format_unregister(g723_1_f.name); 00163 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "G.723.1 Simple Timestamp 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 169 of file format_g723.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 169 of file format_g723.c.
struct ast_format g723_1_f [static] |