1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright © 2006 Rémi Denis-Courmont
7 * Author: Rémi Denis-Courmont <rem # videolan,org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
31 #include "vlc_access.h"
32 #include "vlc_block.h"
36 #define DEFAULT_MARGIN 32 // megabytes
38 #define FORCE_TEXT N_("Force use of dump module")
39 #define FORCE_LONGTEXT N_("Activate the dump module " \
40 "even for media with fast seeking.")
42 #define MARGIN_TEXT N_("Maximum size of temporary file (Mb)")
43 #define MARGIN_LONGTEXT N_("The dump module will abort dumping of the media " \
44 "if more than this much megabyte were performed.")
46 static int Open (vlc_object_t *);
47 static void Close (vlc_object_t *);
50 set_shortname (_("Dump"));
51 set_description (_("Dump"));
52 set_category (CAT_INPUT);
53 set_subcategory (SUBCAT_INPUT_ACCESS_FILTER);
54 set_capability ("access_filter", 0);
55 add_shortcut ("dump");
56 set_callbacks (Open, Close);
58 add_bool ("dump-force", VLC_FALSE, NULL, FORCE_TEXT,
59 FORCE_LONGTEXT, VLC_FALSE);
60 add_integer ("dump-margin", DEFAULT_MARGIN, NULL, MARGIN_TEXT,
61 MARGIN_LONGTEXT, VLC_FALSE);
64 static int Read (access_t *access, uint8_t *buffer, int len);
65 static block_t *Block (access_t *access);
66 static int Seek (access_t *access, int64_t offset);
67 static int Control (access_t *access, int cmd, va_list ap);
69 static void Trigger (access_t *access);
70 static int KeyHandler (vlc_object_t *obj, char const *varname,
71 vlc_value_t oldval, vlc_value_t newval, void *data);
82 static int Open (vlc_object_t *obj)
84 access_t *access = (access_t*)obj;
85 access_t *src = access->p_source;
87 if (!var_CreateGetBool (access, "dump-force"))
90 if ((access2_Control (src, ACCESS_CAN_FASTSEEK, &b) == 0) && b)
92 msg_Dbg (obj, "dump filter useless");
97 if (src->pf_read != NULL)
98 access->pf_read = Read;
100 access->pf_block = Block;
101 if (src->pf_seek != NULL)
102 access->pf_seek = Seek;
104 access->pf_control = Control;
105 access->info = src->info;
107 access_sys_t *p_sys = access->p_sys = malloc (sizeof (*p_sys));
110 memset (p_sys, 0, sizeof (*p_sys));
112 if ((p_sys->stream = tmpfile ()) == NULL)
114 msg_Err (access, "cannot create temporary file: %s", strerror (errno));
118 p_sys->tmp_max = ((int64_t)var_CreateGetInteger (access, "dump-margin")) << 20;
120 var_AddCallback (access->p_libvlc, "key-pressed", KeyHandler, access);
129 static void Close (vlc_object_t *obj)
131 access_t *access = (access_t *)obj;
132 access_sys_t *p_sys = access->p_sys;
134 var_DelCallback (access->p_libvlc, "key-pressed", KeyHandler, access);
136 if (p_sys->stream != NULL)
137 fclose (p_sys->stream);
142 static void Dump (access_t *access, const uint8_t *buffer, size_t len)
144 access_sys_t *p_sys = access->p_sys;
145 FILE *stream = p_sys->stream;
147 if ((stream == NULL) || (len == 0))
150 if ((p_sys->tmp_max != -1) && (access->info.i_pos > p_sys->tmp_max))
152 msg_Dbg (access, "too much data - dump will not work");
156 if (fwrite (buffer, len, 1, stream) != 1)
158 msg_Err (access, "cannot write to file: %s", strerror (errno));
166 p_sys->stream = NULL;
170 static int Read (access_t *access, uint8_t *buffer, int len)
172 access_t *src = access->p_source;
174 src->info.i_update = access->info.i_update;
175 len = src->pf_read (src, buffer, len);
176 access->info = src->info;
178 Dump (access, buffer, len);
185 static block_t *Block (access_t *access)
187 access_t *src = access->p_source;
190 src->info.i_update = access->info.i_update;
191 block = src->pf_block (src);
192 access->info = src->info;
194 if ((block == NULL) || (block->i_buffer <= 0))
197 Dump (access, block->p_buffer, block->i_buffer);
203 static int Control (access_t *access, int cmd, va_list ap)
205 access_t *src = access->p_source;
207 return src->pf_control (src, cmd, ap);
211 static int Seek (access_t *access, int64_t offset)
213 access_t *src = access->p_source;
214 access_sys_t *p_sys = access->p_sys;
216 if (p_sys->tmp_max == -1)
218 msg_Err (access, "cannot seek while dumping!");
222 if (p_sys->stream != NULL)
224 msg_Dbg (access, "seeking - dump will not work");
225 fclose (p_sys->stream);
226 p_sys->stream = NULL;
229 src->info.i_update = access->info.i_update;
230 int ret = src->pf_seek (src, offset);
231 access->info = src->info;
236 static void Trigger (access_t *access)
238 access_sys_t *p_sys = access->p_sys;
240 if (p_sys->stream == NULL)
243 if (p_sys->tmp_max == -1)
244 return; // already triggered - should we stop? FIXME
250 if (localtime_r (&now, &t) == NULL)
251 return; // No time, eh? Well, I'd rather not run on your computer.
253 if (t.tm_year > 999999999)
254 // Humanity is about 300 times older than when this was written,
255 // and there is an off-by-one in the following sprintf().
258 const char *home = access->p_libvlc->psz_homedir;
260 /* Hmm what about the extension?? */
261 char filename[strlen (home) + sizeof ("/vlcdump-YYYYYYYYY-MM-DD-HH-MM-SS.ts")];
262 sprintf (filename, "%s/vlcdump-%04u-%02u-%02u-%02u-%02u-%02u.ts", home,
263 t.tm_year, t.tm_mon, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
265 msg_Info (access, "dumping media to \"%s\"...", filename);
267 FILE *newstream = fopen (filename, "wb");
268 if (newstream == NULL)
270 msg_Err (access, "cannot create dump file \"%s\": %s", filename,
275 /* This might cause excessive hard drive work :( */
276 FILE *oldstream = p_sys->stream;
282 size_t len = fread (buf, 1, sizeof (buf), oldstream);
285 if (ferror (oldstream))
287 msg_Err (access, "cannot read temporary file: %s",
292 /* Done with temporary file */
294 p_sys->stream = newstream;
299 if (fwrite (buf, len, 1, newstream) != 1)
301 msg_Err (access, "cannot write dump file: %s", strerror (errno));
306 /* Failed to copy temporary file */
307 fseek (oldstream, 0, SEEK_END);
313 static int KeyHandler (vlc_object_t *obj, char const *varname,
314 vlc_value_t oldval, vlc_value_t newval, void *data)
316 access_t *access = data;
321 for (struct hotkey *key = access->p_libvlc->p_hotkeys;
322 key->psz_action != NULL; key++)
324 if (key->i_key == newval.i_int)
326 if (key->i_action == ACTIONID_DUMP)
327 Trigger ((access_t *)data);