Save to raw, headerless h264 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 | h264_desc |
Defines | |
#define | BUF_SIZE 4096 |
Functions | |
AST_MODULE_INFO (ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER,"Raw H.264 data",.load=load_module,.unload=unload_module,.load_pri=AST_MODPRI_APP_DEPEND) | |
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_format | h264_f |
Save to raw, headerless h264 data.
Definition in file format_h264.c.
#define BUF_SIZE 4096 |
Definition at line 44 of file format_h264.c.
AST_MODULE_INFO | ( | ASTERISK_GPL_KEY | , | |
AST_MODFLAG_LOAD_ORDER | , | |||
"Raw H.264 data" | , | |||
. | load = load_module , |
|||
. | unload = unload_module , |
|||
. | load_pri = AST_MODPRI_APP_DEPEND | |||
) |
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, read] |
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] |
Definition at line 133 of file format_h264.c.
static off_t h264_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 156 of file format_h264.c.
References ast_filestream::f.
00157 { 00158 off_t offset = ftell(fs->f); 00159 return offset; /* XXX totally bogus, needs fixing */ 00160 }
static int h264_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 139 of file format_h264.c.
References ast_log(), AST_LOG_WARNING, errno, and ast_filestream::f.
00140 { 00141 int fd; 00142 off_t cur; 00143 00144 if ((fd = fileno(fs->f)) < 0) { 00145 ast_log(AST_LOG_WARNING, "Unable to determine file descriptor for h264 filestream %p: %s\n", fs, strerror(errno)); 00146 return -1; 00147 } 00148 if ((cur = ftello(fs->f)) < 0) { 00149 ast_log(AST_LOG_WARNING, "Unable to determine current position in h264 filestream %p: %s\n", fs, strerror(errno)); 00150 return -1; 00151 } 00152 /* Truncate file to current length */ 00153 return ftruncate(fd, cur); 00154 }
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(), 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.
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 176 of file format_h264.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, and AST_MODULE_LOAD_SUCCESS.
00177 { 00178 if (ast_format_register(&h264_f)) 00179 return AST_MODULE_LOAD_FAILURE; 00180 return AST_MODULE_LOAD_SUCCESS; 00181 }
static int unload_module | ( | void | ) | [static] |
Definition at line 183 of file format_h264.c.
References ast_format_unregister(), and ast_format::name.
00184 { 00185 return ast_format_unregister(h264_f.name); 00186 }
struct ast_format h264_f [static] |
Definition at line 162 of file format_h264.c.