Save to raw, headerless h263 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.
Data Structures | |
struct | h263_desc |
Defines | |
#define | BUF_SIZE 32768 |
Functions | |
AST_MODULE_INFO (ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER,"Raw H.263 data",.load=load_module,.unload=unload_module,.load_pri=AST_MODPRI_APP_DEPEND) | |
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 |
Save to raw, headerless h263 data.
Definition in file format_h263.c.
#define BUF_SIZE 32768 |
Definition at line 49 of file format_h263.c.
AST_MODULE_INFO | ( | ASTERISK_GPL_KEY | , | |
AST_MODFLAG_LOAD_ORDER | , | |||
"Raw H.263 data" | , | |||
. | load = load_module , |
|||
. | unload = unload_module , |
|||
. | load_pri = AST_MODPRI_APP_DEPEND | |||
) |
static int h263_open | ( | struct ast_filestream * | s | ) | [static] |
Definition at line 56 of file format_h263.c.
References ast_log(), ast_filestream::f, and LOG_WARNING.
00057 { 00058 unsigned int ts; 00059 int res; 00060 00061 if ((res = fread(&ts, 1, sizeof(ts), s->f)) < sizeof(ts)) { 00062 ast_log(LOG_WARNING, "Empty file!\n"); 00063 return -1; 00064 } 00065 return 0; 00066 }
static struct ast_frame* h263_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static, read] |
Definition at line 68 of file format_h263.c.
References ast_filestream::_private, AST_FORMAT_H263, AST_FRAME_SET_BUFFER, AST_FRAME_VIDEO, AST_FRIENDLY_OFFSET, ast_log(), ast_filestream::buf, BUF_SIZE, ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, ast_frame::delivery, errno, ast_filestream::f, ast_filestream::fr, ast_frame::frametype, h263_desc::lastts, len(), LOG_WARNING, ast_frame::mallocd, ast_frame::ptr, ast_frame::samples, ast_frame::subclass, and ast_frame::ts.
00069 { 00070 int res; 00071 format_t mark; 00072 unsigned short len; 00073 unsigned int ts; 00074 struct h263_desc *fs = (struct h263_desc *)s->_private; 00075 00076 /* Send a frame from the file to the appropriate channel */ 00077 if ((res = fread(&len, 1, sizeof(len), s->f)) < 1) 00078 return NULL; 00079 len = ntohs(len); 00080 mark = (len & 0x8000) ? 1 : 0; 00081 len &= 0x7fff; 00082 if (len > BUF_SIZE) { 00083 ast_log(LOG_WARNING, "Length %d is too long\n", len); 00084 return NULL; 00085 } 00086 s->fr.frametype = AST_FRAME_VIDEO; 00087 s->fr.subclass.codec = AST_FORMAT_H263; 00088 s->fr.mallocd = 0; 00089 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, len); 00090 if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { 00091 if (res) 00092 ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); 00093 return NULL; 00094 } 00095 s->fr.samples = fs->lastts; /* XXX what ? */ 00096 s->fr.datalen = len; 00097 s->fr.subclass.codec |= mark; 00098 s->fr.delivery.tv_sec = 0; 00099 s->fr.delivery.tv_usec = 0; 00100 if ((res = fread(&ts, 1, sizeof(ts), s->f)) == sizeof(ts)) { 00101 fs->lastts = ntohl(ts); 00102 *whennext = fs->lastts * 4/45; 00103 } else 00104 *whennext = 0; 00105 return &s->fr; 00106 }
static int h263_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
Definition at line 144 of file format_h263.c.
static off_t h263_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 167 of file format_h263.c.
References ast_filestream::f.
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 150 of file format_h263.c.
References ast_log(), AST_LOG_WARNING, errno, and ast_filestream::f.
00151 { 00152 int fd; 00153 off_t cur; 00154 00155 if ((fd = fileno(fs->f)) < 0) { 00156 ast_log(AST_LOG_WARNING, "Unable to determine file descriptor for h263 filestream %p: %s\n", fs, strerror(errno)); 00157 return -1; 00158 } 00159 if ((cur = ftello(fs->f)) < 0) { 00160 ast_log(AST_LOG_WARNING, "Unable to determine current position in h263 filestream %p: %s\n", fs, strerror(errno)); 00161 return -1; 00162 } 00163 /* Truncate file to current length */ 00164 return ftruncate(fd, cur); 00165 }
static int h263_write | ( | struct ast_filestream * | fs, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 108 of file format_h263.c.
References AST_FORMAT_H263, AST_FRAME_VIDEO, ast_getformatname(), ast_log(), ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, errno, ast_filestream::f, ast_frame::frametype, len(), LOG_WARNING, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.
00109 { 00110 int res; 00111 unsigned int ts; 00112 unsigned short len; 00113 format_t subclass; 00114 format_t mark=0; 00115 if (f->frametype != AST_FRAME_VIDEO) { 00116 ast_log(LOG_WARNING, "Asked to write non-video frame!\n"); 00117 return -1; 00118 } 00119 subclass = f->subclass.codec; 00120 if (subclass & 0x1) 00121 mark=0x8000; 00122 subclass &= ~0x1; 00123 if (subclass != AST_FORMAT_H263) { 00124 ast_log(LOG_WARNING, "Asked to write non-h263 frame (%s)!\n", ast_getformatname(f->subclass.codec)); 00125 return -1; 00126 } 00127 ts = htonl(f->samples); 00128 if ((res = fwrite(&ts, 1, sizeof(ts), fs->f)) != sizeof(ts)) { 00129 ast_log(LOG_WARNING, "Bad write (%d/4): %s\n", res, strerror(errno)); 00130 return -1; 00131 } 00132 len = htons(f->datalen | mark); 00133 if ((res = fwrite(&len, 1, sizeof(len), fs->f)) != sizeof(len)) { 00134 ast_log(LOG_WARNING, "Bad write (%d/2): %s\n", res, strerror(errno)); 00135 return -1; 00136 } 00137 if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) { 00138 ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno)); 00139 return -1; 00140 } 00141 return 0; 00142 }
static int load_module | ( | void | ) | [static] |
Definition at line 187 of file format_h263.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, and AST_MODULE_LOAD_SUCCESS.
00188 { 00189 if (ast_format_register(&h263_f)) 00190 return AST_MODULE_LOAD_FAILURE; 00191 return AST_MODULE_LOAD_SUCCESS; 00192 }
static int unload_module | ( | void | ) | [static] |
Definition at line 194 of file format_h263.c.
References ast_format_unregister(), and ast_format::name.
00195 { 00196 return ast_format_unregister(h263_f.name); 00197 }
struct ast_format h263_f [static] |
Definition at line 173 of file format_h263.c.