#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 | h264_desc |
Defines | |
#define | BUF_SIZE 4096 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static int | h264_open (struct ast_filestream *s) |
static struct ast_frame * | h264_read (struct ast_filestream *s, int *whennext) |
static int | h264_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | h264_tell (struct ast_filestream *fs) |
static int | h264_trunc (struct ast_filestream *fs) |
static int | h264_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 = "Raw H.264 data" , .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 = "88eaa8f5c1bd988bedd71113385e0886" , .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 | h264_f |
Definition in file format_h264.c.
#define BUF_SIZE 4096 |
Definition at line 44 of file format_h264.c.
static void __reg_module | ( | void | ) | [static] |
Definition at line 183 of file format_h264.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 183 of file format_h264.c.
static int h264_open | ( | struct ast_filestream * | s | ) | [static] |
Definition at line 49 of file format_h264.c.
References ast_log(), ast_filestream::f, and LOG_WARNING.
00050 { 00051 unsigned int ts; 00052 int res; 00053 if ((res = fread(&ts, 1, sizeof(ts), s->f)) < sizeof(ts)) { 00054 ast_log(LOG_WARNING, "Empty file!\n"); 00055 return -1; 00056 } 00057 return 0; 00058 }
static struct ast_frame* h264_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 60 of file format_h264.c.
References ast_filestream::_private, AST_FORMAT_H264, 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, h264_desc::lastts, len(), LOG_WARNING, ast_frame::mallocd, ast_frame::ptr, ast_frame::samples, ast_frame::subclass, and ast_frame::ts.
00061 { 00062 int res; 00063 int mark=0; 00064 unsigned short len; 00065 unsigned int ts; 00066 struct h264_desc *fs = (struct h264_desc *)s->_private; 00067 00068 /* Send a frame from the file to the appropriate channel */ 00069 if ((res = fread(&len, 1, sizeof(len), s->f)) < 1) 00070 return NULL; 00071 len = ntohs(len); 00072 mark = (len & 0x8000) ? 1 : 0; 00073 len &= 0x7fff; 00074 if (len > BUF_SIZE) { 00075 ast_log(LOG_WARNING, "Length %d is too long\n", len); 00076 len = BUF_SIZE; /* XXX truncate */ 00077 } 00078 s->fr.frametype = AST_FRAME_VIDEO; 00079 s->fr.subclass.codec = AST_FORMAT_H264; 00080 s->fr.mallocd = 0; 00081 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, len); 00082 if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { 00083 if (res) 00084 ast_log(LOG_WARNING, "Short read (%d of %d) (%s)!\n", res, len, strerror(errno)); 00085 return NULL; 00086 } 00087 s->fr.samples = fs->lastts; 00088 s->fr.datalen = len; 00089 s->fr.subclass.codec |= mark; 00090 s->fr.delivery.tv_sec = 0; 00091 s->fr.delivery.tv_usec = 0; 00092 if ((res = fread(&ts, 1, sizeof(ts), s->f)) == sizeof(ts)) { 00093 fs->lastts = ntohl(ts); 00094 *whennext = fs->lastts * 4/45; 00095 } else 00096 *whennext = 0; 00097 return &s->fr; 00098 }
static int h264_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
static off_t h264_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 147 of file format_h264.c.
References ast_filestream::f.
00148 { 00149 off_t offset = ftell(fs->f); 00150 return offset; /* XXX totally bogus, needs fixing */ 00151 }
static int h264_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 139 of file format_h264.c.
References ast_filestream::f.
00140 { 00141 /* Truncate file to current length */ 00142 if (ftruncate(fileno(fs->f), ftell(fs->f)) < 0) 00143 return -1; 00144 return 0; 00145 }
static int h264_write | ( | struct ast_filestream * | s, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 100 of file format_h264.c.
References AST_FORMAT_H264, AST_FRAME_VIDEO, ast_getformatname(), ast_log(), errno, ast_filestream::f, f, len(), and LOG_WARNING.
00101 { 00102 int res; 00103 unsigned int ts; 00104 unsigned short len; 00105 int mark; 00106 00107 if (f->frametype != AST_FRAME_VIDEO) { 00108 ast_log(LOG_WARNING, "Asked to write non-video frame!\n"); 00109 return -1; 00110 } 00111 mark = (f->subclass.codec & 0x1) ? 0x8000 : 0; 00112 if ((f->subclass.codec & ~0x1) != AST_FORMAT_H264) { 00113 ast_log(LOG_WARNING, "Asked to write non-h264 frame (%s)!\n", ast_getformatname(f->subclass.codec)); 00114 return -1; 00115 } 00116 ts = htonl(f->samples); 00117 if ((res = fwrite(&ts, 1, sizeof(ts), s->f)) != sizeof(ts)) { 00118 ast_log(LOG_WARNING, "Bad write (%d/4): %s\n", res, strerror(errno)); 00119 return -1; 00120 } 00121 len = htons(f->datalen | mark); 00122 if ((res = fwrite(&len, 1, sizeof(len), s->f)) != sizeof(len)) { 00123 ast_log(LOG_WARNING, "Bad write (%d/2): %s\n", res, strerror(errno)); 00124 return -1; 00125 } 00126 if ((res = fwrite(f->data.ptr, 1, f->datalen, s->f)) != f->datalen) { 00127 ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno)); 00128 return -1; 00129 } 00130 return 0; 00131 }
static int load_module | ( | void | ) | [static] |
Definition at line 167 of file format_h264.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and h264_f.
00168 { 00169 if (ast_format_register(&h264_f)) 00170 return AST_MODULE_LOAD_FAILURE; 00171 return AST_MODULE_LOAD_SUCCESS; 00172 }
static int unload_module | ( | void | ) | [static] |
Definition at line 174 of file format_h264.c.
References ast_format_unregister(), h264_f, and ast_format::name.
00175 { 00176 return ast_format_unregister(h264_f.name); 00177 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Raw H.264 data" , .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 = "88eaa8f5c1bd988bedd71113385e0886" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND } [static] |
Definition at line 183 of file format_h264.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 183 of file format_h264.c.
struct ast_format h264_f [static] |