--- /dev/null
+/*****************************************************************************
+ * dump.c
+ *****************************************************************************
+ * Copyright © 2006 Rémi Denis-Courmont
+ * $Id$
+ *
+ * Author: Rémi Denis-Courmont <rem # videolan,org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#include <vlc/vlc.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <time.h>
+
+#include "vlc_access.h"
+#include "vlc_block.h"
+#include "charset.h"
+#include "vlc_keys.h"
+
+#define DEFAULT_MARGIN 32 // megabytes
+
+#define FORCE_TEXT N_("Force use of dump module")
+#define FORCE_LONGTEXT N_("Activate the dump module " \
+ "even for media with fast seeking.")
+
+#define MARGIN_TEXT N_("Maximum size of temporary file (Mb)")
+#define MARGIN_LONGTEXT N_("The dump module will abort dumping of the media " \
+ "if more than this much megabyte were performed.")
+
+static int Open (vlc_object_t *);
+static void Close (vlc_object_t *);
+
+vlc_module_begin ();
+ set_shortname (_("Dump"));
+ set_description (_("Dump"));
+ set_category (CAT_INPUT);
+ set_subcategory (SUBCAT_INPUT_ACCESS_FILTER);
+ set_capability ("access_filter", 0);
+ add_shortcut ("dump");
+ set_callbacks (Open, Close);
+
+ add_bool ("dump-force", VLC_FALSE, NULL, FORCE_TEXT,
+ FORCE_LONGTEXT, VLC_FALSE);
+ add_integer ("dump-margin", DEFAULT_MARGIN, NULL, MARGIN_TEXT,
+ MARGIN_LONGTEXT, VLC_FALSE);
+vlc_module_end();
+
+static int Read (access_t *access, uint8_t *buffer, int len);
+static block_t *Block (access_t *access);
+static int Seek (access_t *access, int64_t offset);
+static int Control (access_t *access, int cmd, va_list ap);
+
+static void Trigger (access_t *access);
+static int KeyHandler (vlc_object_t *obj, char const *varname,
+ vlc_value_t oldval, vlc_value_t newval, void *data);
+
+struct access_sys_t
+{
+ FILE *stream;
+ int64_t tmp_max;
+};
+
+/**
+ * Open()
+ */
+static int Open (vlc_object_t *obj)
+{
+ access_t *access = (access_t*)obj;
+ access_t *src = access->p_source;
+
+ if (!var_CreateGetBool (access, "dump-force"))
+ {
+ vlc_bool_t b;
+ if ((access2_Control (src, ACCESS_CAN_FASTSEEK, &b) == 0) && b)
+ {
+ msg_Dbg (obj, "dump filter useless");
+ return VLC_EGENERIC;
+ }
+ }
+
+ if (src->pf_read != NULL)
+ access->pf_read = Read;
+ else
+ access->pf_block = Block;
+ if (src->pf_seek != NULL)
+ access->pf_seek = Seek;
+
+ access->pf_control = Control;
+ access->info = src->info;
+
+ access_sys_t *p_sys = access->p_sys = malloc (sizeof (*p_sys));
+ if (p_sys == NULL)
+ return VLC_ENOMEM;
+ memset (p_sys, 0, sizeof (*p_sys));
+
+ if ((p_sys->stream = tmpfile ()) == NULL)
+ {
+ msg_Err (access, "cannot create temporary file: %s", strerror (errno));
+ free (p_sys);
+ return VLC_EGENERIC;
+ }
+ p_sys->tmp_max = ((int64_t)var_CreateGetInteger (access, "dump-margin")) << 20;
+
+ var_AddCallback (access->p_libvlc, "key-pressed", KeyHandler, access);
+
+ return VLC_SUCCESS;
+}
+
+
+/**
+ * Close()
+ */
+static void Close (vlc_object_t *obj)
+{
+ access_t *access = (access_t *)obj;
+ access_sys_t *p_sys = access->p_sys;
+
+ var_DelCallback (access->p_libvlc, "key-pressed", KeyHandler, access);
+
+ if (p_sys->stream != NULL)
+ fclose (p_sys->stream);
+ free (p_sys);
+}
+
+
+static void Dump (access_t *access, const uint8_t *buffer, size_t len)
+{
+ access_sys_t *p_sys = access->p_sys;
+ FILE *stream = p_sys->stream;
+
+ if ((stream == NULL) || (len == 0))
+ return;
+
+ if ((p_sys->tmp_max != -1) && (access->info.i_pos > p_sys->tmp_max))
+ {
+ msg_Dbg (access, "too much data - dump will not work");
+ goto error;
+ }
+
+ if (fwrite (buffer, len, 1, stream) != 1)
+ {
+ msg_Err (access, "cannot write to file: %s", strerror (errno));
+ goto error;
+ }
+
+ return;
+
+error:
+ fclose (stream);
+ p_sys->stream = NULL;
+}
+
+
+static int Read (access_t *access, uint8_t *buffer, int len)
+{
+ access_t *src = access->p_source;
+
+ src->info.i_update = access->info.i_update;
+ len = src->pf_read (src, buffer, len);
+ access->info = src->info;
+
+ Dump (access, buffer, len);
+ //Trigger (access);
+
+ return len;
+}
+
+
+static block_t *Block (access_t *access)
+{
+ access_t *src = access->p_source;
+ block_t *block;
+
+ src->info.i_update = access->info.i_update;
+ block = src->pf_block (src);
+ access->info = src->info;
+
+ if ((block == NULL) || (block->i_buffer <= 0))
+ return block;
+
+ Dump (access, block->p_buffer, block->i_buffer);
+
+ return block;
+}
+
+
+static int Control (access_t *access, int cmd, va_list ap)
+{
+ access_t *src = access->p_source;
+
+ return src->pf_control (src, cmd, ap);
+}
+
+
+static int Seek (access_t *access, int64_t offset)
+{
+ access_t *src = access->p_source;
+ access_sys_t *p_sys = access->p_sys;
+
+ if (p_sys->tmp_max == -1)
+ {
+ msg_Err (access, "cannot seek while dumping!");
+ return VLC_EGENERIC;
+ }
+
+ if (p_sys->stream != NULL)
+ {
+ msg_Dbg (access, "seeking - dump will not work");
+ fclose (p_sys->stream);
+ p_sys->stream = NULL;
+ }
+
+ src->info.i_update = access->info.i_update;
+ int ret = src->pf_seek (src, offset);
+ access->info = src->info;
+ return ret;
+}
+
+
+static void Trigger (access_t *access)
+{
+ access_sys_t *p_sys = access->p_sys;
+
+ if (p_sys->stream == NULL)
+ return; // too late
+
+ if (p_sys->tmp_max == -1)
+ return; // already triggered - should we stop? FIXME
+
+ time_t now;
+ time (&now);
+
+ struct tm t;
+ if (localtime_r (&now, &t) == NULL)
+ return; // No time, eh? Well, I'd rather not run on your computer.
+
+ if (t.tm_year > 999999999)
+ // Humanity is about 300 times older than when this was written,
+ // and there is an off-by-one in the following sprintf().
+ return;
+
+ const char *home = access->p_libvlc->psz_homedir;
+
+ /* Hmm what about the extension?? */
+ char filename[strlen (home) + sizeof ("/vlcdump-YYYYYYYYY-MM-DD-HH-MM-SS.ts")];
+ sprintf (filename, "%s/vlcdump-%04u-%02u-%02u-%02u-%02u-%02u.ts", home,
+ t.tm_year, t.tm_mon, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
+
+ msg_Info (access, "dumping media to \"%s\"...", filename);
+
+ FILE *newstream = fopen (filename, "wb");
+ if (newstream == NULL)
+ {
+ msg_Err (access, "cannot create dump file \"%s\": %s", filename,
+ strerror (errno));
+ return;
+ }
+
+ /* This might cause excessive hard drive work :( */
+ FILE *oldstream = p_sys->stream;
+ rewind (oldstream);
+
+ for (;;)
+ {
+ char buf[16384];
+ size_t len = fread (buf, 1, sizeof (buf), oldstream);
+ if (len == 0)
+ {
+ if (ferror (oldstream))
+ {
+ msg_Err (access, "cannot read temporary file: %s",
+ strerror (errno));
+ break;
+ }
+
+ /* Done with temporary file */
+ fclose (oldstream);
+ p_sys->stream = newstream;
+ p_sys->tmp_max = -1;
+ return;
+ }
+
+ if (fwrite (buf, len, 1, newstream) != 1)
+ {
+ msg_Err (access, "cannot write dump file: %s", strerror (errno));
+ break;
+ }
+ }
+
+ /* Failed to copy temporary file */
+ fseek (oldstream, 0, SEEK_END);
+ fclose (newstream);
+ return;
+}
+
+
+static int KeyHandler (vlc_object_t *obj, char const *varname,
+ vlc_value_t oldval, vlc_value_t newval, void *data)
+{
+ access_t *access = data;
+
+ (void)oldval;
+ (void)obj;
+
+ for (struct hotkey *key = access->p_libvlc->p_hotkeys;
+ key->psz_action != NULL; key++)
+ {
+ if (key->i_key == newval.i_int)
+ {
+ if (key->i_action == ACTIONID_DUMP)
+ Trigger ((access_t *)data);
+ break;
+ }
+ }
+
+ return VLC_SUCCESS;
+}
projects / vlc / commitdiff