#include "asterisk.h"
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <sys/time.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "asterisk/lock.h"
#include "asterisk/channel.h"
#include "asterisk/file.h"
#include "asterisk/logger.h"
#include "asterisk/sched.h"
#include "asterisk/module.h"
#include "asterisk/endian.h"
Include dependency graph for format_h263.c:
Go to the source code of this file.
Data Structures | |
struct | h263_desc |
Defines | |
#define | BUF_SIZE 32768 |
Functions | |
AST_MODULE_INFO_STANDARD (ASTERISK_GPL_KEY,"Raw H.263 data") | |
static int | h263_open (struct ast_filestream *s) |
static struct ast_frame * | h263_read (struct ast_filestream *s, int *whennext) |
static int | h263_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | h263_tell (struct ast_filestream *fs) |
static int | h263_trunc (struct ast_filestream *fs) |
static int | h263_write (struct ast_filestream *fs, struct ast_frame *f) |
static int | load_module (void) |
static int | unload_module (void) |
Variables | |
static struct ast_format | h263_f |
Definition in file format_h263.c.
#define BUF_SIZE 32768 |
Definition at line 58 of file format_h263.c.
AST_MODULE_INFO_STANDARD | ( | ASTERISK_GPL_KEY | , | |
"Raw H.263 data" | ||||
) |
static int h263_open | ( | struct ast_filestream * | s | ) | [static] |
Definition at line 65 of file format_h263.c.
References ast_log(), LOG_WARNING, and s.
00066 { 00067 unsigned int ts; 00068 int res; 00069 00070 if ((res = fread(&ts, 1, sizeof(ts), s->f)) < sizeof(ts)) { 00071 ast_log(LOG_WARNING, "Empty file!\n"); 00072 return -1; 00073 } 00074 return 0; 00075 }
static struct ast_frame* h263_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 77 of file format_h263.c.
References AST_FORMAT_H263, AST_FRAME_SET_BUFFER, AST_FRAME_VIDEO, AST_FRIENDLY_OFFSET, ast_log(), BUF_SIZE, h263_desc::lastts, len, LOG_WARNING, s, and ast_frame::ts.
00078 { 00079 int res; 00080 int mark; 00081 unsigned short len; 00082 unsigned int ts; 00083 struct h263_desc *fs = (struct h263_desc *)s->private; 00084 00085 /* Send a frame from the file to the appropriate channel */ 00086 if ((res = fread(&len, 1, sizeof(len), s->f)) < 1) 00087 return NULL; 00088 len = ntohs(len); 00089 mark = (len & 0x8000) ? 1 : 0; 00090 len &= 0x7fff; 00091 if (len > BUF_SIZE) { 00092 ast_log(LOG_WARNING, "Length %d is too long\n", len); 00093 return NULL; 00094 } 00095 s->fr.frametype = AST_FRAME_VIDEO; 00096 s->fr.subclass = AST_FORMAT_H263; 00097 s->fr.mallocd = 0; 00098 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, len); 00099 if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != s->fr.datalen) { 00100 if (res) 00101 ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); 00102 return NULL; 00103 } 00104 s->fr.samples = fs->lastts; /* XXX what ? */ 00105 s->fr.datalen = len; 00106 s->fr.subclass |= mark; 00107 s->fr.delivery.tv_sec = 0; 00108 s->fr.delivery.tv_usec = 0; 00109 if ((res = fread(&ts, 1, sizeof(ts), s->f)) == sizeof(ts)) { 00110 fs->lastts = ntohl(ts); 00111 *whennext = fs->lastts * 4/45; 00112 } else 00113 *whennext = 0; 00114 return &s->fr; 00115 }
static int h263_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
static off_t h263_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 167 of file format_h263.c.
References ast_filestream::f, and offset.
00168 { 00169 off_t offset = ftello(fs->f); 00170 return offset; /* XXX totally bogus, needs fixing */ 00171 }
static int h263_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 159 of file format_h263.c.
References ast_filestream::f.
00160 { 00161 /* Truncate file to current length */ 00162 if (ftruncate(fileno(fs->f), ftello(fs->f)) < 0) 00163 return -1; 00164 return 0; 00165 }
static int h263_write | ( | struct ast_filestream * | fs, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 117 of file format_h263.c.
References AST_FORMAT_H263, AST_FRAME_VIDEO, ast_log(), ast_filestream::f, f, len, and LOG_WARNING.
00118 { 00119 int res; 00120 unsigned int ts; 00121 unsigned short len; 00122 int subclass; 00123 int mark=0; 00124 if (f->frametype != AST_FRAME_VIDEO) { 00125 ast_log(LOG_WARNING, "Asked to write non-video frame!\n"); 00126 return -1; 00127 } 00128 subclass = f->subclass; 00129 if (subclass & 0x1) 00130 mark=0x8000; 00131 subclass &= ~0x1; 00132 if (subclass != AST_FORMAT_H263) { 00133 ast_log(LOG_WARNING, "Asked to write non-h263 frame (%d)!\n", f->subclass); 00134 return -1; 00135 } 00136 ts = htonl(f->samples); 00137 if ((res = fwrite(&ts, 1, sizeof(ts), fs->f)) != sizeof(ts)) { 00138 ast_log(LOG_WARNING, "Bad write (%d/4): %s\n", res, strerror(errno)); 00139 return -1; 00140 } 00141 len = htons(f->datalen | mark); 00142 if ((res = fwrite(&len, 1, sizeof(len), fs->f)) != sizeof(len)) { 00143 ast_log(LOG_WARNING, "Bad write (%d/2): %s\n", res, strerror(errno)); 00144 return -1; 00145 } 00146 if ((res = fwrite(f->data, 1, f->datalen, fs->f)) != f->datalen) { 00147 ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno)); 00148 return -1; 00149 } 00150 return 0; 00151 }
static int load_module | ( | void | ) | [static] |
Definition at line 187 of file format_h263.c.
References ast_format_register, and h263_f.
00188 { 00189 return ast_format_register(&h263_f); 00190 }
static int unload_module | ( | void | ) | [static] |
Definition at line 192 of file format_h263.c.
References ast_format_unregister(), h263_f, and ast_format::name.
00193 { 00194 return ast_format_unregister(h263_f.name); 00195 }
struct ast_format h263_f [static] |