1 /* GStreamer DVD title source
2 * Copyright (C) 1999 Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) 2001 Billy Biggs <vektor@dumbterm.net>.
4 * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
20 */
22 #ifdef HAVE_CONFIG_H
23 #include "config.h"
24 #endif
26 #include "_stdint.h"
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <unistd.h>
31 #include <string.h>
32 #include <errno.h>
34 #include "dvdreadsrc.h"
36 #include <gst/gst-i18n-plugin.h>
38 GST_DEBUG_CATEGORY_STATIC (gstgst_dvd_read_src_debug);
39 #define GST_CAT_DEFAULT (gstgst_dvd_read_src_debug)
41 static void gst_dvd_read_src_do_init (GType dvdreadsrc_type);
43 enum
44 {
45 ARG_0,
46 ARG_DEVICE,
47 ARG_TITLE,
48 ARG_CHAPTER,
49 ARG_ANGLE
50 };
52 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
53 GST_PAD_SRC,
54 GST_PAD_ALWAYS,
55 GST_STATIC_CAPS ("video/mpeg, mpegversion=2, systemstream=(boolean)true"));
57 static GstFormat title_format;
58 static GstFormat angle_format;
59 static GstFormat sector_format;
60 static GstFormat chapter_format;
62 static gboolean gst_dvd_read_src_start (GstBaseSrc * basesrc);
63 static gboolean gst_dvd_read_src_stop (GstBaseSrc * basesrc);
64 static GstFlowReturn gst_dvd_read_src_create (GstPushSrc * pushsrc,
65 GstBuffer ** buf);
66 static gboolean gst_dvd_read_src_src_query (GstBaseSrc * basesrc,
67 GstQuery * query);
68 static gboolean gst_dvd_read_src_src_event (GstBaseSrc * basesrc,
69 GstEvent * event);
70 static gboolean gst_dvd_read_src_goto_title (GstDvdReadSrc * src, gint title,
71 gint angle);
72 static gboolean gst_dvd_read_src_goto_chapter (GstDvdReadSrc * src,
73 gint chapter);
74 static gboolean gst_dvd_read_src_goto_sector (GstDvdReadSrc * src, gint angle);
75 static void gst_dvd_read_src_set_property (GObject * object, guint prop_id,
76 const GValue * value, GParamSpec * pspec);
77 static void gst_dvd_read_src_get_property (GObject * object, guint prop_id,
78 GValue * value, GParamSpec * pspec);
79 static GstEvent *gst_dvd_read_src_make_clut_change_event (GstDvdReadSrc * src,
80 const guint * clut);
81 static gboolean gst_dvd_read_src_get_size (GstDvdReadSrc * src, gint64 * size);
82 static gboolean gst_dvd_read_src_do_seek (GstBaseSrc * src, GstSegment * s);
83 static gint64 gst_dvd_read_src_convert_timecode (dvd_time_t * time);
84 static gint gst_dvd_read_src_get_next_cell (GstDvdReadSrc * src,
85 pgc_t * pgc, gint cell);
86 static GstClockTime gst_dvd_read_src_get_time_for_sector (GstDvdReadSrc * src,
87 guint sector);
88 static gint gst_dvd_read_src_get_sector_from_time (GstDvdReadSrc * src,
89 GstClockTime ts);
91 GST_BOILERPLATE_FULL (GstDvdReadSrc, gst_dvd_read_src, GstPushSrc,
92 GST_TYPE_PUSH_SRC, gst_dvd_read_src_do_init);
94 static void
95 gst_dvd_read_src_base_init (gpointer g_class)
96 {
97 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
99 gst_element_class_add_static_pad_template (element_class, &srctemplate);
101 gst_element_class_set_details_simple (element_class, "DVD Source",
102 "Source/File/DVD",
103 "Access a DVD title/chapter/angle using libdvdread",
104 "Erik Walthinsen <omega@cse.ogi.edu>");
105 }
107 static void
108 gst_dvd_read_src_finalize (GObject * object)
109 {
110 GstDvdReadSrc *src = GST_DVD_READ_SRC (object);
112 g_free (src->location);
113 g_free (src->last_uri);
115 G_OBJECT_CLASS (parent_class)->finalize (object);
116 }
118 static void
119 gst_dvd_read_src_init (GstDvdReadSrc * src, GstDvdReadSrcClass * klass)
120 {
121 src->dvd = NULL;
122 src->vts_file = NULL;
123 src->vmg_file = NULL;
124 src->dvd_title = NULL;
126 src->location = g_strdup ("/dev/dvd");
127 src->last_uri = NULL;
128 src->new_seek = TRUE;
129 src->new_cell = TRUE;
130 src->change_cell = FALSE;
131 src->uri_title = 1;
132 src->uri_chapter = 1;
133 src->uri_angle = 1;
135 src->title_lang_event_pending = NULL;
136 src->pending_clut_event = NULL;
138 gst_pad_use_fixed_caps (GST_BASE_SRC_PAD (src));
139 gst_pad_set_caps (GST_BASE_SRC_PAD (src),
140 gst_static_pad_template_get_caps (&srctemplate));
141 }
143 static gboolean
144 gst_dvd_read_src_is_seekable (GstBaseSrc * src)
145 {
146 return TRUE;
147 }
149 static void
150 gst_dvd_read_src_class_init (GstDvdReadSrcClass * klass)
151 {
152 GstPushSrcClass *gstpushsrc_class = GST_PUSH_SRC_CLASS (klass);
153 GstBaseSrcClass *gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
154 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
156 gobject_class->finalize = gst_dvd_read_src_finalize;
157 gobject_class->set_property = gst_dvd_read_src_set_property;
158 gobject_class->get_property = gst_dvd_read_src_get_property;
160 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE,
161 g_param_spec_string ("device", "Device",
162 "DVD device location", NULL,
163 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
164 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TITLE,
165 g_param_spec_int ("title", "title", "title",
166 1, 999, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
167 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CHAPTER,
168 g_param_spec_int ("chapter", "chapter", "chapter",
169 1, 999, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
170 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ANGLE,
171 g_param_spec_int ("angle", "angle", "angle",
172 1, 999, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
174 gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_dvd_read_src_start);
175 gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_dvd_read_src_stop);
176 gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_dvd_read_src_src_query);
177 gstbasesrc_class->event = GST_DEBUG_FUNCPTR (gst_dvd_read_src_src_event);
178 gstbasesrc_class->do_seek = GST_DEBUG_FUNCPTR (gst_dvd_read_src_do_seek);
179 gstbasesrc_class->is_seekable =
180 GST_DEBUG_FUNCPTR (gst_dvd_read_src_is_seekable);
182 gstpushsrc_class->create = GST_DEBUG_FUNCPTR (gst_dvd_read_src_create);
183 }
185 static gboolean
186 gst_dvd_read_src_start (GstBaseSrc * basesrc)
187 {
188 GstDvdReadSrc *src = GST_DVD_READ_SRC (basesrc);
190 g_return_val_if_fail (src->location != NULL, FALSE);
192 GST_DEBUG_OBJECT (src, "Opening DVD '%s'", src->location);
194 if ((src->dvd = DVDOpen (src->location)) == NULL)
195 goto open_failed;
197 /* Load the video manager to find out the information about the titles */
198 GST_DEBUG_OBJECT (src, "Loading VMG info");
200 if (!(src->vmg_file = ifoOpen (src->dvd, 0)))
201 goto ifo_open_failed;
203 src->tt_srpt = src->vmg_file->tt_srpt;
205 src->title = src->uri_title - 1;
206 src->chapter = src->uri_chapter - 1;
207 src->angle = src->uri_angle - 1;
209 if (!gst_dvd_read_src_goto_title (src, src->title, src->angle))
210 goto title_open_failed;
212 if (!gst_dvd_read_src_goto_chapter (src, src->chapter))
213 goto chapter_open_failed;
215 src->new_seek = FALSE;
216 src->change_cell = TRUE;
218 return TRUE;
220 /* ERRORS */
221 open_failed:
222 {
223 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
224 (_("Could not open DVD")),
225 ("DVDOpen(%s) failed: %s", src->location, g_strerror (errno)));
226 return FALSE;
227 }
228 ifo_open_failed:
229 {
230 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
231 (_("Could not open DVD")),
232 ("ifoOpen() failed: %s", g_strerror (errno)));
233 return FALSE;
234 }
235 title_open_failed:
236 {
237 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
238 (_("Could not open DVD title %d"), src->uri_title), (NULL));
239 return FALSE;
240 }
241 chapter_open_failed:
242 {
243 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
244 (_("Failed to go to chapter %d of DVD title %d"),
245 src->uri_chapter, src->uri_title), (NULL));
246 return FALSE;
247 }
248 }
250 static gboolean
251 gst_dvd_read_src_stop (GstBaseSrc * basesrc)
252 {
253 GstDvdReadSrc *src = GST_DVD_READ_SRC (basesrc);
255 if (src->vts_file) {
256 ifoClose (src->vts_file);
257 src->vts_file = NULL;
258 }
259 if (src->vmg_file) {
260 ifoClose (src->vmg_file);
261 src->vmg_file = NULL;
262 }
263 if (src->dvd_title) {
264 DVDCloseFile (src->dvd_title);
265 src->dvd_title = NULL;
266 }
267 if (src->dvd) {
268 DVDClose (src->dvd);
269 src->dvd = NULL;
270 }
271 src->new_cell = TRUE;
272 src->new_seek = TRUE;
273 src->change_cell = FALSE;
274 src->chapter = 0;
275 src->title = 0;
276 src->need_newsegment = TRUE;
277 src->vts_tmapt = NULL;
278 if (src->title_lang_event_pending) {
279 gst_event_unref (src->title_lang_event_pending);
280 src->title_lang_event_pending = NULL;
281 }
282 if (src->pending_clut_event) {
283 gst_event_unref (src->pending_clut_event);
284 src->pending_clut_event = NULL;
285 }
286 if (src->chapter_starts) {
287 g_free (src->chapter_starts);
288 src->chapter_starts = NULL;
289 }
291 GST_LOG_OBJECT (src, "closed DVD");
293 return TRUE;
294 }
296 static void
297 cur_title_get_chapter_pgc (GstDvdReadSrc * src, gint chapter, gint * p_pgn,
298 gint * p_pgc_id, pgc_t ** p_pgc)
299 {
300 pgc_t *pgc;
301 gint pgn, pgc_id;
303 g_assert (chapter >= 0 && chapter < src->num_chapters);
305 pgc_id = src->vts_ptt_srpt->title[src->ttn - 1].ptt[chapter].pgcn;
306 pgn = src->vts_ptt_srpt->title[src->ttn - 1].ptt[chapter].pgn;
307 pgc = src->vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
309 *p_pgn = pgn;
310 *p_pgc_id = pgc_id;
311 *p_pgc = pgc;
312 }
314 static void
315 cur_title_get_chapter_bounds (GstDvdReadSrc * src, gint chapter,
316 gint * p_first_cell, gint * p_last_cell)
317 {
318 pgc_t *pgc;
319 gint pgn, pgc_id, pgn_next_ch;
321 g_assert (chapter >= 0 && chapter < src->num_chapters);
323 cur_title_get_chapter_pgc (src, chapter, &pgn, &pgc_id, &pgc);
325 *p_first_cell = pgc->program_map[pgn - 1] - 1;
327 if (chapter == (src->num_chapters - 1)) {
328 *p_last_cell = pgc->nr_of_cells - 1;
329 } else {
330 pgn_next_ch = src->vts_ptt_srpt->title[src->ttn - 1].ptt[chapter + 1].pgn;
331 *p_last_cell = pgc->program_map[pgn_next_ch - 1] - 1;
332 }
334 GST_DEBUG_OBJECT (src, "Chapter %d bounds: %d %d (within %d cells)",
335 chapter, *p_first_cell, *p_last_cell, pgc->nr_of_cells);
336 }
338 static gboolean
339 gst_dvd_read_src_goto_chapter (GstDvdReadSrc * src, gint chapter)
340 {
341 gint i;
343 /* make sure the chapter number is valid for this title */
344 if (chapter < 0 || chapter >= src->num_chapters) {
345 GST_WARNING_OBJECT (src, "invalid chapter %d (only %d available)",
346 chapter, src->num_chapters);
347 chapter = CLAMP (chapter, 0, src->num_chapters - 1);
348 }
350 /* determine which program chain we want to watch. This is
351 * based on the chapter number */
352 cur_title_get_chapter_pgc (src, chapter, &src->pgn, &src->pgc_id,
353 &src->cur_pgc);
354 cur_title_get_chapter_bounds (src, chapter, &src->start_cell,
355 &src->last_cell);
357 GST_LOG_OBJECT (src, "Opened chapter %d - cell %d-%d", chapter + 1,
358 src->start_cell, src->last_cell);
360 /* retrieve position */
361 src->cur_pack = 0;
362 for (i = 0; i < chapter; i++) {
363 gint c1, c2;
365 cur_title_get_chapter_bounds (src, i, &c1, &c2);
367 while (c1 < c2) {
368 src->cur_pack +=
369 src->cur_pgc->cell_playback[c1].last_sector -
370 src->cur_pgc->cell_playback[c1].first_sector;
371 ++c1;
372 }
373 }
375 /* prepare reading for new cell */
376 src->new_cell = TRUE;
377 src->next_cell = src->start_cell;
379 src->chapter = chapter;
381 if (src->pending_clut_event)
382 gst_event_unref (src->pending_clut_event);
384 src->pending_clut_event =
385 gst_dvd_read_src_make_clut_change_event (src, src->cur_pgc->palette);
387 return TRUE;
388 }
390 static void
391 gst_dvd_read_src_get_chapter_starts (GstDvdReadSrc * src)
392 {
393 GstClockTime uptohere;
394 guint c;
396 g_free (src->chapter_starts);
397 src->chapter_starts = g_new (GstClockTime, src->num_chapters);
399 uptohere = (GstClockTime) 0;
400 for (c = 0; c < src->num_chapters; ++c) {
401 GstClockTime chapter_duration = 0;
402 gint cell_start, cell_end, cell;
403 gint pgn, pgc_id;
404 pgc_t *pgc;
406 cur_title_get_chapter_pgc (src, c, &pgn, &pgc_id, &pgc);
407 cur_title_get_chapter_bounds (src, c, &cell_start, &cell_end);
409 cell = cell_start;
410 while (cell < cell_end) {
411 dvd_time_t *cell_duration;
413 cell_duration = &pgc->cell_playback[cell].playback_time;
414 chapter_duration += gst_dvd_read_src_convert_timecode (cell_duration);
415 cell = gst_dvd_read_src_get_next_cell (src, pgc, cell);
416 }
418 src->chapter_starts[c] = uptohere;
420 GST_INFO_OBJECT (src, "[%02u] Chapter %02u starts at %" GST_TIME_FORMAT
421 ", dur = %" GST_TIME_FORMAT ", cells %d-%d", src->title + 1, c + 1,
422 GST_TIME_ARGS (uptohere), GST_TIME_ARGS (chapter_duration),
423 cell_start, cell_end);
425 uptohere += chapter_duration;
426 }
427 }
429 static gboolean
430 gst_dvd_read_src_goto_title (GstDvdReadSrc * src, gint title, gint angle)
431 {
432 GstStructure *s;
433 gchar lang_code[3] = { '\0', '\0', '\0' }, *t;
434 pgc_t *pgc0;
435 gint title_set_nr;
436 gint num_titles;
437 gint pgn0, pgc0_id;
438 gint i;
440 /* make sure our title number is valid */
441 num_titles = src->tt_srpt->nr_of_srpts;
442 GST_INFO_OBJECT (src, "There are %d titles on this DVD", num_titles);
443 if (title < 0 || title >= num_titles)
444 goto invalid_title;
446 src->num_chapters = src->tt_srpt->title[title].nr_of_ptts;
447 GST_INFO_OBJECT (src, "Title %d has %d chapters", title + 1,
448 src->num_chapters);
450 /* make sure the angle number is valid for this title */
451 src->num_angles = src->tt_srpt->title[title].nr_of_angles;
452 GST_LOG_OBJECT (src, "Title %d has %d angles", title + 1, src->num_angles);
453 if (angle < 0 || angle >= src->num_angles) {
454 GST_WARNING_OBJECT (src, "Invalid angle %d (only %d available)",
455 angle, src->num_angles);
456 angle = CLAMP (angle, 0, src->num_angles - 1);
457 }
459 /* load the VTS information for the title set our title is in */
460 title_set_nr = src->tt_srpt->title[title].title_set_nr;
461 src->vts_file = ifoOpen (src->dvd, title_set_nr);
462 if (src->vts_file == NULL)
463 goto ifo_open_failed;
465 src->ttn = src->tt_srpt->title[title].vts_ttn;
466 src->vts_ptt_srpt = src->vts_file->vts_ptt_srpt;
468 /* interactive title? */
469 if (src->num_chapters > 0 &&
470 src->vts_ptt_srpt->title[src->ttn - 1].ptt[0].pgn == 0) {
471 goto commands_only_pgc;
472 }
474 /* we've got enough info, time to open the title set data */
475 src->dvd_title = DVDOpenFile (src->dvd, title_set_nr, DVD_READ_TITLE_VOBS);
476 if (src->dvd_title == NULL)
477 goto title_open_failed;
479 GST_INFO_OBJECT (src, "Opened title %d, angle %d", title + 1, angle);
480 src->title = title;
481 src->angle = angle;
483 /* build event */
485 if (src->title_lang_event_pending) {
486 gst_event_unref (src->title_lang_event_pending);
487 src->title_lang_event_pending = NULL;
488 }
490 s = gst_structure_new ("application/x-gst-dvd",
491 "event", G_TYPE_STRING, "dvd-lang-codes", NULL);
493 /* so we can filter out invalid/unused streams (same for all chapters) */
494 cur_title_get_chapter_pgc (src, 0, &pgn0, &pgc0_id, &pgc0);
496 /* audio */
497 for (i = 0; i < src->vts_file->vtsi_mat->nr_of_vts_audio_streams; i++) {
498 const audio_attr_t *a;
500 /* audio stream present? */
501 if (pgc0 != NULL && (pgc0->audio_control[i] & 0x8000) == 0)
502 continue;
504 a = &src->vts_file->vtsi_mat->vts_audio_attr[i];
506 t = g_strdup_printf ("audio-%d-format", i);
507 gst_structure_set (s, t, G_TYPE_INT, (int) a->audio_format, NULL);
508 g_free (t);
510 if (a->lang_type) {
511 t = g_strdup_printf ("audio-%d-language", i);
512 lang_code[0] = (a->lang_code >> 8) & 0xff;
513 lang_code[1] = a->lang_code & 0xff;
514 gst_structure_set (s, t, G_TYPE_STRING, lang_code, NULL);
515 g_free (t);
516 } else {
517 lang_code[0] = '\0';
518 }
520 GST_INFO_OBJECT (src, "[%02d] Audio %02d: lang='%s', format=%d",
521 src->title + 1, i, lang_code, (gint) a->audio_format);
522 }
524 /* subtitle */
525 for (i = 0; i < src->vts_file->vtsi_mat->nr_of_vts_subp_streams; i++) {
526 const subp_attr_t *u;
527 const video_attr_t *v;
528 gint sid;
530 /* subpicture stream present? */
531 if (pgc0 != NULL && (pgc0->subp_control[i] & 0x80000000) == 0)
532 continue;
534 u = &src->vts_file->vtsi_mat->vts_subp_attr[i];
535 v = &src->vts_file->vtsi_mat->vts_video_attr;
537 sid = i;
538 if (pgc0 != NULL) {
539 if (v->display_aspect_ratio == 0) /* 4:3 */
540 sid = (pgc0->subp_control[i] >> 24) & 0x1f;
541 else if (v->display_aspect_ratio == 3) /* 16:9 */
542 sid = (pgc0->subp_control[i] >> 8) & 0x1f;
543 }
545 if (u->type) {
546 t = g_strdup_printf ("subtitle-%d-language", sid);
547 lang_code[0] = (u->lang_code >> 8) & 0xff;
548 lang_code[1] = u->lang_code & 0xff;
549 gst_structure_set (s, t, G_TYPE_STRING, lang_code, NULL);
550 g_free (t);
551 } else {
552 lang_code[0] = '\0';
553 }
555 GST_INFO_OBJECT (src, "[%02d] Subtitle %02d: lang='%s', type=%d",
556 src->title + 1, sid, lang_code, u->type);
557 }
559 src->title_lang_event_pending =
560 gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s);
562 /* dump seek tables */
563 src->vts_tmapt = src->vts_file->vts_tmapt;
564 if (src->vts_tmapt) {
565 gint i, j;
567 GST_LOG_OBJECT (src, "nr_of_tmaps = %d", src->vts_tmapt->nr_of_tmaps);
568 for (i = 0; i < src->vts_tmapt->nr_of_tmaps; ++i) {
569 GST_LOG_OBJECT (src, "======= Table %d ===================", i);
570 GST_LOG_OBJECT (src, "Offset relative to VTS_TMAPTI: %d",
571 src->vts_tmapt->tmap_offset[i]);
572 GST_LOG_OBJECT (src, "Time unit (seconds) : %d",
573 src->vts_tmapt->tmap[i].tmu);
574 GST_LOG_OBJECT (src, "Number of entries : %d",
575 src->vts_tmapt->tmap[i].nr_of_entries);
576 for (j = 0; j < src->vts_tmapt->tmap[i].nr_of_entries; j++) {
577 guint64 time;
579 time = src->vts_tmapt->tmap[i].tmu * (j + 1) * GST_SECOND;
580 GST_LOG_OBJECT (src, "Time: %" GST_TIME_FORMAT " VOBU "
581 "Sector: 0x%08x %s", GST_TIME_ARGS (time),
582 src->vts_tmapt->tmap[i].map_ent[j] & 0x7fffffff,
583 (src->vts_tmapt->tmap[i].map_ent[j] >> 31) ? "discontinuity" : "");
584 }
585 }
586 } else {
587 GST_WARNING_OBJECT (src, "no vts_tmapt - seeking will suck");
588 }
590 gst_dvd_read_src_get_chapter_starts (src);
592 return TRUE;
594 /* ERRORS */
595 invalid_title:
596 {
597 GST_WARNING_OBJECT (src, "Invalid title %d (only %d available)",
598 title, num_titles);
599 return FALSE;
600 }
601 ifo_open_failed:
602 {
603 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
604 (_("Could not open DVD title %d"), title_set_nr),
605 ("ifoOpen(%d) failed: %s", title_set_nr, g_strerror (errno)));
606 return FALSE;
607 }
608 title_open_failed:
609 {
610 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
611 (_("Could not open DVD title %d"), title_set_nr),
612 ("Can't open title VOBS (VTS_%02d_1.VOB)", title_set_nr));
613 return FALSE;
614 }
615 commands_only_pgc:
616 {
617 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
618 (_("Could not open DVD title %d. Interactive titles are not supported "
619 "by this element"), title_set_nr),
620 ("Commands-only PGC, not supported, use rsndvdbin"));
621 return FALSE;
622 }
623 }
625 /* FIXME: double-check this function, compare against original */
626 static gint
627 gst_dvd_read_src_get_next_cell (GstDvdReadSrc * src, pgc_t * pgc, gint cell)
628 {
629 /* Check if we're entering an angle block. */
630 if (pgc->cell_playback[cell].block_type != BLOCK_TYPE_ANGLE_BLOCK)
631 return (cell + 1);
633 while (pgc->cell_playback[cell].block_mode != BLOCK_MODE_LAST_CELL)
634 ++cell;
636 return cell + 1;
637 }
639 /* Returns true if the pack is a NAV pack */
640 static gboolean
641 gst_dvd_read_src_is_nav_pack (const guint8 * data, gint lbn, dsi_t * dsi_pack)
642 {
643 if (GST_READ_UINT32_BE (data + 0x26) != 0x000001BF)
644 return FALSE;
646 /* Check that this is substream 0 (PCI) */
647 if (data[0x2c] != 0)
648 return FALSE;
650 if (GST_READ_UINT32_BE (data + 0x400) != 0x000001BF)
651 return FALSE;
653 /* Check that this is substream 1 (DSI) */
654 if (data[0x406] != 1)
655 return FALSE;
657 /* Check sizes of PCI and DSI packets */
658 if (GST_READ_UINT16_BE (data + 0x2a) != 0x03d4)
659 return FALSE;
661 if (GST_READ_UINT16_BE (data + 0x404) != 0x03fa)
662 return FALSE;
664 /* Read the DSI packet into the provided struct and check it */
665 navRead_DSI (dsi_pack, (unsigned char *) data + DSI_START_BYTE);
666 if (lbn != dsi_pack->dsi_gi.nv_pck_lbn)
667 return FALSE;
669 return TRUE;
670 }
672 /* find time for sector from index, returns NONE if there is no exact match */
673 static GstClockTime
674 gst_dvd_read_src_get_time_for_sector (GstDvdReadSrc * src, guint sector)
675 {
676 gint i, j;
678 if (src->vts_tmapt == NULL || src->vts_tmapt->nr_of_tmaps == 0)
679 return GST_CLOCK_TIME_NONE;
681 for (i = 0; i < src->vts_tmapt->nr_of_tmaps; ++i) {
682 for (j = 0; j < src->vts_tmapt->tmap[i].nr_of_entries; ++j) {
683 if ((src->vts_tmapt->tmap[i].map_ent[j] & 0x7fffffff) == sector)
684 return src->vts_tmapt->tmap[i].tmu * (j + 1) * GST_SECOND;
685 }
686 }
688 if (sector == 0)
689 return (GstClockTime) 0;
691 return GST_CLOCK_TIME_NONE;
692 }
694 /* returns the sector in the index at (or before) the given time, or -1 */
695 static gint
696 gst_dvd_read_src_get_sector_from_time (GstDvdReadSrc * src, GstClockTime ts)
697 {
698 gint sector, j;
700 if (src->vts_tmapt == NULL || src->vts_tmapt->nr_of_tmaps < src->ttn)
701 return -1;
703 sector = 0;
704 for (j = 0; j < src->vts_tmapt->tmap[src->ttn - 1].nr_of_entries; ++j) {
705 GstClockTime entry_time;
707 entry_time = src->vts_tmapt->tmap[src->ttn - 1].tmu * (j + 1) * GST_SECOND;
708 if (entry_time <= ts) {
709 sector = src->vts_tmapt->tmap[src->ttn - 1].map_ent[j] & 0x7fffffff;
710 }
711 if (entry_time >= ts) {
712 return sector;
713 }
714 }
716 if (ts == 0)
717 return 0;
719 return -1;
720 }
722 typedef enum
723 {
724 GST_DVD_READ_OK = 0,
725 GST_DVD_READ_ERROR = -1,
726 GST_DVD_READ_EOS = -2,
727 GST_DVD_READ_AGAIN = -3
728 } GstDvdReadReturn;
730 static GstDvdReadReturn
731 gst_dvd_read_src_read (GstDvdReadSrc * src, gint angle, gint new_seek,
732 GstBuffer ** p_buf)
733 {
734 GstBuffer *buf;
735 GstSegment *seg;
736 guint8 oneblock[DVD_VIDEO_LB_LEN];
737 dsi_t dsi_pack;
738 guint next_vobu, cur_output_size;
739 gint len;
740 gint retries;
741 gint64 next_time;
743 seg = &(GST_BASE_SRC (src)->segment);
745 /* playback by cell in this pgc, starting at the cell for our chapter */
746 if (new_seek)
747 src->cur_cell = src->start_cell;
749 again:
751 if (src->cur_cell >= src->last_cell) {
752 /* advance to next chapter */
753 if (src->chapter == (src->num_chapters - 1) ||
754 (seg->format == chapter_format && seg->stop != -1 &&
755 src->chapter == (seg->stop - 1))) {
756 GST_DEBUG_OBJECT (src, "end of chapter segment");
757 goto eos;
758 }
760 GST_INFO_OBJECT (src, "end of chapter %d, switch to next",
761 src->chapter + 1);
763 ++src->chapter;
764 gst_dvd_read_src_goto_chapter (src, src->chapter);
766 return GST_DVD_READ_AGAIN;
767 }
769 if (src->new_cell || new_seek) {
770 if (!new_seek) {
771 src->cur_cell = src->next_cell;
772 if (src->cur_cell >= src->last_cell) {
773 GST_LOG_OBJECT (src, "last cell in chapter");
774 goto again;
775 }
776 }
778 /* take angle into account */
779 if (src->cur_pgc->cell_playback[src->cur_cell].block_type
780 == BLOCK_TYPE_ANGLE_BLOCK)
781 src->cur_cell += angle;
783 /* calculate next cell */
784 src->next_cell =
785 gst_dvd_read_src_get_next_cell (src, src->cur_pgc, src->cur_cell);
787 /* we loop until we're out of this cell */
788 src->cur_pack = src->cur_pgc->cell_playback[src->cur_cell].first_sector;
789 src->new_cell = FALSE;
790 GST_DEBUG_OBJECT (src, "Starting new cell %d @ pack %d", src->cur_cell,
791 src->cur_pack);
792 }
794 if (src->cur_pack >= src->cur_pgc->cell_playback[src->cur_cell].last_sector) {
795 src->new_cell = TRUE;
796 GST_LOG_OBJECT (src, "Beyond last sector for cell %d, going to next cell",
797 src->cur_cell);
798 return GST_DVD_READ_AGAIN;
799 }
801 /* read NAV packet */
802 retries = 0;
803 nav_retry:
804 retries++;
806 len = DVDReadBlocks (src->dvd_title, src->cur_pack, 1, oneblock);
807 if (len != 1)
808 goto read_error;
810 if (!gst_dvd_read_src_is_nav_pack (oneblock, src->cur_pack, &dsi_pack)) {
811 GST_LOG_OBJECT (src, "Skipping nav packet @ pack %d", src->cur_pack);
812 src->cur_pack++;
814 if (retries < 2000) {
815 goto nav_retry;
816 } else {
817 GST_LOG_OBJECT (src, "No nav packet @ pack %d after 2000 blocks",
818 src->cur_pack);
819 goto read_error;
820 }
821 }
823 /* determine where we go next. These values are the ones we
824 * mostly care about */
825 cur_output_size = dsi_pack.dsi_gi.vobu_ea + 1;
827 /* If we're not at the end of this cell, we can determine the next
828 * VOBU to display using the VOBU_SRI information section of the
829 * DSI. Using this value correctly follows the current angle,
830 * avoiding the doubled scenes in The Matrix, and makes our life
831 * really happy.
832 *
833 * Otherwise, we set our next address past the end of this cell to
834 * force the code above to go to the next cell in the program. */
835 if (dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL) {
836 next_vobu = src->cur_pack + (dsi_pack.vobu_sri.next_vobu & 0x7fffffff);
837 } else {
838 next_vobu = src->cur_pgc->cell_playback[src->cur_cell].last_sector + 1;
839 }
841 g_assert (cur_output_size < 1024);
843 /* create the buffer (TODO: use buffer pool?) */
844 buf = gst_buffer_new_and_alloc (cur_output_size * DVD_VIDEO_LB_LEN);
846 GST_LOG_OBJECT (src, "Going to read %u sectors @ pack %d", cur_output_size,
847 src->cur_pack);
849 /* read in and output cursize packs */
850 len = DVDReadBlocks (src->dvd_title, src->cur_pack, cur_output_size,
851 GST_BUFFER_DATA (buf));
853 if (len != cur_output_size)
854 goto block_read_error;
856 GST_BUFFER_SIZE (buf) = cur_output_size * DVD_VIDEO_LB_LEN;
857 /* GST_BUFFER_OFFSET (buf) = priv->cur_pack * DVD_VIDEO_LB_LEN; */
858 GST_BUFFER_TIMESTAMP (buf) =
859 gst_dvd_read_src_get_time_for_sector (src, src->cur_pack);
861 gst_buffer_set_caps (buf, GST_PAD_CAPS (GST_BASE_SRC_PAD (src)));
863 *p_buf = buf;
865 GST_LOG_OBJECT (src, "Read %u sectors", cur_output_size);
867 src->cur_pack = next_vobu;
869 next_time = GST_BUFFER_TIMESTAMP (buf);
870 if (GST_CLOCK_TIME_IS_VALID (next_time) && seg->format == GST_FORMAT_TIME &&
871 GST_CLOCK_TIME_IS_VALID (seg->stop) &&
872 next_time > seg->stop + 5 * GST_SECOND) {
873 GST_DEBUG_OBJECT (src, "end of TIME segment");
874 goto eos;
875 }
877 return GST_DVD_READ_OK;
879 /* ERRORS */
880 eos:
881 {
882 GST_INFO_OBJECT (src, "Reached end-of-segment/stream - EOS");
883 return GST_DVD_READ_EOS;
884 }
885 read_error:
886 {
887 GST_ERROR_OBJECT (src, "Read failed for block %d", src->cur_pack);
888 return GST_DVD_READ_ERROR;
889 }
890 block_read_error:
891 {
892 GST_ERROR_OBJECT (src, "Read failed for %d blocks at %d",
893 cur_output_size, src->cur_pack);
894 gst_buffer_unref (buf);
895 return GST_DVD_READ_ERROR;
896 }
897 }
899 /* we don't cache the result on purpose */
900 static gboolean
901 gst_dvd_read_descrambler_available (void)
902 {
903 GModule *module;
904 gpointer sym;
905 gsize res;
907 module = g_module_open ("libdvdcss", 0);
908 if (module != NULL) {
909 res = g_module_symbol (module, "dvdcss_open", &sym);
910 g_module_close (module);
911 } else {
912 res = FALSE;
913 }
915 return res;
916 }
918 static GstFlowReturn
919 gst_dvd_read_src_create (GstPushSrc * pushsrc, GstBuffer ** p_buf)
920 {
921 GstDvdReadSrc *src = GST_DVD_READ_SRC (pushsrc);
922 GstPad *srcpad;
923 gint res;
925 g_return_val_if_fail (src->dvd != NULL, GST_FLOW_ERROR);
927 srcpad = GST_BASE_SRC (src)->srcpad;
929 if (src->need_newsegment) {
930 gst_pad_push_event (srcpad,
931 gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
932 (gint64) src->cur_pack * DVD_VIDEO_LB_LEN, -1, 0));
933 src->need_newsegment = FALSE;
934 }
936 if (src->new_seek) {
937 gst_dvd_read_src_goto_title (src, src->title, src->angle);
938 gst_dvd_read_src_goto_chapter (src, src->chapter);
940 src->new_seek = FALSE;
941 src->change_cell = TRUE;
942 }
944 if (src->title_lang_event_pending) {
945 gst_pad_push_event (srcpad, src->title_lang_event_pending);
946 src->title_lang_event_pending = NULL;
947 }
949 if (src->pending_clut_event) {
950 gst_pad_push_event (srcpad, src->pending_clut_event);
951 src->pending_clut_event = NULL;
952 }
954 /* read it in */
955 do {
956 res = gst_dvd_read_src_read (src, src->angle, src->change_cell, p_buf);
957 } while (res == GST_DVD_READ_AGAIN);
959 switch (res) {
960 case GST_DVD_READ_ERROR:{
961 /* FIXME: figure out a way to detect if scrambling is the problem */
962 if (!gst_dvd_read_descrambler_available ()) {
963 GST_ELEMENT_ERROR (src, RESOURCE, READ,
964 (_("Could not read DVD. This may be because the DVD is encrypted "
965 "and a DVD decryption library is not installed.")), (NULL));
966 } else {
967 GST_ELEMENT_ERROR (src, RESOURCE, READ, (_("Could not read DVD.")),
968 (NULL));
969 }
970 return GST_FLOW_ERROR;
971 }
972 case GST_DVD_READ_EOS:{
973 return GST_FLOW_UNEXPECTED;
974 }
975 case GST_DVD_READ_OK:{
976 src->change_cell = FALSE;
977 return GST_FLOW_OK;
978 }
979 default:
980 break;
981 }
983 g_return_val_if_reached (GST_FLOW_UNEXPECTED);
984 }
986 static void
987 gst_dvd_read_src_set_property (GObject * object, guint prop_id,
988 const GValue * value, GParamSpec * pspec)
989 {
990 GstDvdReadSrc *src = GST_DVD_READ_SRC (object);
991 gboolean started;
993 GST_OBJECT_LOCK (src);
994 started = GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_STARTED);
996 switch (prop_id) {
997 case ARG_DEVICE:{
998 if (started) {
999 g_warning ("%s: property '%s' needs to be set before the device is "
1000 "opened", GST_ELEMENT_NAME (src), pspec->name);
1001 break;;
1002 }
1004 g_free (src->location);
1005 /* clear the filename if we get a NULL (is that possible?) */
1006 if (g_value_get_string (value) == NULL) {
1007 src->location = g_strdup ("/dev/dvd");
1008 } else {
1009 src->location = g_strdup (g_value_get_string (value));
1010 }
1011 break;
1012 }
1013 case ARG_TITLE:
1014 src->uri_title = g_value_get_int (value);
1015 if (started) {
1016 src->title = src->uri_title - 1;
1017 src->new_seek = TRUE;
1018 }
1019 break;
1020 case ARG_CHAPTER:
1021 src->uri_chapter = g_value_get_int (value);
1022 if (started) {
1023 src->chapter = src->uri_chapter - 1;
1024 src->new_seek = TRUE;
1025 }
1026 break;
1027 case ARG_ANGLE:
1028 src->uri_angle = g_value_get_int (value);
1029 if (started) {
1030 src->angle = src->uri_angle - 1;
1031 }
1032 break;
1033 default:
1034 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1035 break;
1036 }
1038 GST_OBJECT_UNLOCK (src);
1039 }
1041 static void
1042 gst_dvd_read_src_get_property (GObject * object, guint prop_id, GValue * value,
1043 GParamSpec * pspec)
1044 {
1045 GstDvdReadSrc *src = GST_DVD_READ_SRC (object);
1047 GST_OBJECT_LOCK (src);
1049 switch (prop_id) {
1050 case ARG_DEVICE:
1051 g_value_set_string (value, src->location);
1052 break;
1053 case ARG_TITLE:
1054 g_value_set_int (value, src->uri_title);
1055 break;
1056 case ARG_CHAPTER:
1057 g_value_set_int (value, src->uri_chapter);
1058 break;
1059 case ARG_ANGLE:
1060 g_value_set_int (value, src->uri_angle);
1061 break;
1062 default:
1063 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1064 break;
1065 }
1067 GST_OBJECT_UNLOCK (src);
1068 }
1070 static gboolean
1071 gst_dvd_read_src_get_size (GstDvdReadSrc * src, gint64 * size)
1072 {
1073 gboolean ret = FALSE;
1075 if (src->dvd_title) {
1076 gsize blocks;
1078 blocks = DVDFileSize (src->dvd_title);
1079 if (blocks >= 0) {
1080 *size = (gint64) blocks *DVD_VIDEO_LB_LEN;
1082 ret = TRUE;
1083 } else {
1084 GST_WARNING_OBJECT (src, "DVDFileSize(%p) failed!", src->dvd_title);
1085 }
1086 }
1088 return ret;
1089 }
1091 /*** Querying and seeking ***/
1093 static gboolean
1094 gst_dvd_read_src_handle_seek_event (GstDvdReadSrc * src, GstEvent * event)
1095 {
1096 GstSeekFlags flags;
1097 GstSeekType cur_type, end_type;
1098 gint64 new_off, total;
1099 GstFormat format;
1100 GstPad *srcpad;
1101 gboolean query_ok;
1102 gdouble rate;
1104 gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &new_off,
1105 &end_type, NULL);
1107 if (rate <= 0.0) {
1108 GST_DEBUG_OBJECT (src, "cannot do backwards playback yet");
1109 return FALSE;
1110 }
1112 if (end_type != GST_SEEK_TYPE_NONE) {
1113 if ((format != chapter_format && format != GST_FORMAT_TIME) ||
1114 end_type != GST_SEEK_TYPE_SET) {
1115 GST_DEBUG_OBJECT (src, "end seek type not supported");
1116 return FALSE;
1117 }
1118 }
1120 if (cur_type != GST_SEEK_TYPE_SET) {
1121 GST_DEBUG_OBJECT (src, "only SEEK_TYPE_SET is supported");
1122 return FALSE;
1123 }
1125 if (format == angle_format) {
1126 GST_OBJECT_LOCK (src);
1127 if (new_off < 0 || new_off >= src->num_angles) {
1128 GST_OBJECT_UNLOCK (src);
1129 GST_DEBUG_OBJECT (src, "invalid angle %d, only %d available",
1130 src->num_angles, src->num_angles);
1131 return FALSE;
1132 }
1133 src->angle = (gint) new_off;
1134 GST_OBJECT_UNLOCK (src);
1135 GST_DEBUG_OBJECT (src, "switched to angle %d", (gint) new_off + 1);
1136 return TRUE;
1137 }
1139 if (format != chapter_format && format != title_format &&
1140 format != GST_FORMAT_BYTES && format != GST_FORMAT_TIME) {
1141 GST_DEBUG_OBJECT (src, "unsupported seek format %d (%s)", format,
1142 gst_format_get_name (format));
1143 return FALSE;
1144 }
1146 if (format == GST_FORMAT_BYTES) {
1147 GST_DEBUG_OBJECT (src, "Requested seek to byte %" G_GUINT64_FORMAT,
1148 new_off);
1149 } else if (format == GST_FORMAT_TIME) {
1150 GST_DEBUG_OBJECT (src, "Requested seek to time %" GST_TIME_FORMAT,
1151 GST_TIME_ARGS (new_off));
1152 if (gst_dvd_read_src_get_sector_from_time (src, new_off) < 0) {
1153 GST_DEBUG_OBJECT (src, "Can't find sector for requested time");
1154 return FALSE;
1155 }
1156 }
1158 srcpad = GST_BASE_SRC_PAD (src);
1160 /* check whether the seek looks reasonable (ie within possible range) */
1161 if (format == GST_FORMAT_BYTES) {
1162 GST_OBJECT_LOCK (src);
1163 query_ok = gst_dvd_read_src_get_size (src, &total);
1164 GST_OBJECT_UNLOCK (src);
1165 } else {
1166 query_ok = gst_pad_query_duration (srcpad, &format, &total);
1167 }
1169 if (!query_ok) {
1170 GST_DEBUG_OBJECT (src, "Failed to query duration in format %s",
1171 gst_format_get_name (format));
1172 return FALSE;
1173 }
1175 GST_DEBUG_OBJECT (src, "Total %s: %12" G_GINT64_FORMAT,
1176 gst_format_get_name (format), total);
1177 GST_DEBUG_OBJECT (src, "Seek to %s: %12" G_GINT64_FORMAT,
1178 gst_format_get_name (format), new_off);
1180 if (new_off >= total) {
1181 GST_DEBUG_OBJECT (src, "Seek position out of range");
1182 return FALSE;
1183 }
1185 /* set segment to seek format; this allows us to use the do_seek
1186 * virtual function and let the base source handle all the tricky
1187 * stuff for us. We don't use the segment internally anyway */
1188 /* FIXME: can't take the stream lock here - what to do? */
1189 GST_OBJECT_LOCK (src);
1190 GST_BASE_SRC (src)->segment.format = format;
1191 GST_BASE_SRC (src)->segment.start = 0;
1192 GST_BASE_SRC (src)->segment.stop = total;
1193 GST_BASE_SRC (src)->segment.duration = total;
1194 GST_OBJECT_UNLOCK (src);
1196 return GST_BASE_SRC_CLASS (parent_class)->event (GST_BASE_SRC (src), event);
1197 }
1199 static void
1200 gst_dvd_read_src_get_sector_bounds (GstDvdReadSrc * src, gint * first,
1201 gint * last)
1202 {
1203 gint c1, c2, tmp;
1204 cur_title_get_chapter_bounds (src, 0, &c1, &tmp);
1205 cur_title_get_chapter_bounds (src, src->num_chapters - 1, &tmp, &c2);
1206 *first = src->cur_pgc->cell_playback[c1].first_sector;
1207 *last = src->cur_pgc->cell_playback[c2].last_sector;
1208 }
1210 static gboolean
1211 gst_dvd_read_src_do_seek (GstBaseSrc * basesrc, GstSegment * s)
1212 {
1213 GstDvdReadSrc *src;
1215 src = GST_DVD_READ_SRC (basesrc);
1217 GST_DEBUG_OBJECT (src, "Seeking to %s: %12" G_GINT64_FORMAT,
1218 gst_format_get_name (s->format), s->last_stop);
1220 if (s->format == sector_format || s->format == GST_FORMAT_BYTES
1221 || s->format == GST_FORMAT_TIME) {
1222 guint old;
1224 old = src->cur_pack;
1226 if (s->format == sector_format) {
1227 gint first, last;
1228 gst_dvd_read_src_get_sector_bounds (src, &first, &last);
1229 GST_DEBUG_OBJECT (src, "Format is sector, seeking to %" G_GINT64_FORMAT,
1230 s->last_stop);
1231 src->cur_pack = s->last_stop;
1232 if (src->cur_pack < first)
1233 src->cur_pack = first;
1234 if (src->cur_pack > last)
1235 src->cur_pack = last;
1236 } else if (s->format == GST_FORMAT_TIME) {
1237 gint sector;
1238 GST_DEBUG_OBJECT (src, "Format is time");
1240 sector = gst_dvd_read_src_get_sector_from_time (src, s->last_stop);
1242 GST_DEBUG_OBJECT (src, "Time %" GST_TIME_FORMAT " => sector %d",
1243 GST_TIME_ARGS (s->last_stop), sector);
1245 /* really shouldn't happen, we've checked this earlier ... */
1246 g_return_val_if_fail (sector >= 0, FALSE);
1248 src->cur_pack = sector;
1249 } else {
1250 /* byte format */
1251 gint first, last;
1252 gst_dvd_read_src_get_sector_bounds (src, &first, &last);
1253 GST_DEBUG_OBJECT (src, "Format is byte");
1254 src->cur_pack = s->last_stop / DVD_VIDEO_LB_LEN;
1255 if (((gint64) src->cur_pack * DVD_VIDEO_LB_LEN) != s->last_stop) {
1256 GST_LOG_OBJECT (src, "rounded down offset %" G_GINT64_FORMAT " => %"
1257 G_GINT64_FORMAT, s->last_stop,
1258 (gint64) src->cur_pack * DVD_VIDEO_LB_LEN);
1259 }
1260 src->cur_pack += first;
1261 }
1263 if (!gst_dvd_read_src_goto_sector (src, src->angle)) {
1264 GST_DEBUG_OBJECT (src, "seek to sector 0x%08x failed", src->cur_pack);
1265 src->cur_pack = old;
1266 return FALSE;
1267 }
1269 GST_LOG_OBJECT (src, "seek to sector 0x%08x ok", src->cur_pack);
1270 } else if (s->format == chapter_format) {
1271 if (!gst_dvd_read_src_goto_chapter (src, (gint) s->last_stop)) {
1272 GST_DEBUG_OBJECT (src, "seek to chapter %d failed",
1273 (gint) s->last_stop + 1);
1274 return FALSE;
1275 }
1276 GST_INFO_OBJECT (src, "seek to chapter %d ok", (gint) s->last_stop + 1);
1277 src->chapter = s->last_stop;
1278 } else if (s->format == title_format) {
1279 if (!gst_dvd_read_src_goto_title (src, (gint) s->last_stop, src->angle) ||
1280 !gst_dvd_read_src_goto_chapter (src, 0)) {
1281 GST_DEBUG_OBJECT (src, "seek to title %d failed", (gint) s->last_stop);
1282 return FALSE;
1283 }
1284 src->title = (gint) s->last_stop;
1285 src->chapter = 0;
1286 GST_INFO_OBJECT (src, "seek to title %d ok", src->title + 1);
1287 } else {
1288 g_return_val_if_reached (FALSE);
1289 }
1291 src->need_newsegment = TRUE;
1292 return TRUE;
1293 }
1295 static gboolean
1296 gst_dvd_read_src_src_event (GstBaseSrc * basesrc, GstEvent * event)
1297 {
1298 GstDvdReadSrc *src = GST_DVD_READ_SRC (basesrc);
1299 gboolean res;
1301 GST_LOG_OBJECT (src, "handling %s event", GST_EVENT_TYPE_NAME (event));
1303 switch (GST_EVENT_TYPE (event)) {
1304 case GST_EVENT_SEEK:
1305 res = gst_dvd_read_src_handle_seek_event (src, event);
1306 break;
1307 default:
1308 res = GST_BASE_SRC_CLASS (parent_class)->event (basesrc, event);
1309 break;
1310 }
1312 return res;
1313 }
1315 static GstEvent *
1316 gst_dvd_read_src_make_clut_change_event (GstDvdReadSrc * src,
1317 const guint * clut)
1318 {
1319 GstStructure *structure;
1320 gchar name[16];
1321 gint i;
1323 structure = gst_structure_new ("application/x-gst-dvd",
1324 "event", G_TYPE_STRING, "dvd-spu-clut-change", NULL);
1326 /* Create a separate field for each value in the table. */
1327 for (i = 0; i < 16; i++) {
1328 g_snprintf (name, sizeof (name), "clut%02d", i);
1329 gst_structure_set (structure, name, G_TYPE_INT, (int) clut[i], NULL);
1330 }
1332 /* Create the DVD event and put the structure into it. */
1333 return gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, structure);
1334 }
1336 static gint64
1337 gst_dvd_read_src_convert_timecode (dvd_time_t * time)
1338 {
1339 gint64 ret_time;
1340 const gint64 one_hour = 3600 * GST_SECOND;
1341 const gint64 one_min = 60 * GST_SECOND;
1343 g_return_val_if_fail ((time->hour >> 4) < 0xa
1344 && (time->hour & 0xf) < 0xa, -1);
1345 g_return_val_if_fail ((time->minute >> 4) < 0x7
1346 && (time->minute & 0xf) < 0xa, -1);
1347 g_return_val_if_fail ((time->second >> 4) < 0x7
1348 && (time->second & 0xf) < 0xa, -1);
1350 ret_time = ((time->hour >> 4) * 10 + (time->hour & 0xf)) * one_hour;
1351 ret_time += ((time->minute >> 4) * 10 + (time->minute & 0xf)) * one_min;
1352 ret_time += ((time->second >> 4) * 10 + (time->second & 0xf)) * GST_SECOND;
1354 return ret_time;
1355 }
1357 static gboolean
1358 gst_dvd_read_src_do_duration_query (GstDvdReadSrc * src, GstQuery * query)
1359 {
1360 GstFormat format;
1361 gint64 val;
1363 gst_query_parse_duration (query, &format, NULL);
1365 switch (format) {
1366 case GST_FORMAT_TIME:{
1367 if (src->cur_pgc == NULL)
1368 return FALSE;
1369 val = gst_dvd_read_src_convert_timecode (&src->cur_pgc->playback_time);
1370 if (val < 0)
1371 return FALSE;
1372 break;
1373 }
1374 case GST_FORMAT_BYTES:{
1375 if (!gst_dvd_read_src_get_size (src, &val))
1376 return FALSE;
1377 break;
1378 }
1379 default:{
1380 if (format == sector_format) {
1381 val = DVDFileSize (src->dvd_title);
1382 } else if (format == title_format) {
1383 val = src->tt_srpt->nr_of_srpts;
1384 } else if (format == chapter_format) {
1385 val = src->num_chapters;
1386 } else if (format == angle_format) {
1387 val = src->tt_srpt->title[src->title].nr_of_angles;
1388 } else {
1389 GST_DEBUG_OBJECT (src, "Don't know how to handle format %d (%s)",
1390 format, gst_format_get_name (format));
1391 return FALSE;
1392 }
1393 break;
1394 }
1395 }
1397 GST_LOG_OBJECT (src, "duration = %" G_GINT64_FORMAT " %s", val,
1398 gst_format_get_name (format));
1400 gst_query_set_duration (query, format, val);
1401 return TRUE;
1402 }
1404 static gboolean
1405 gst_dvd_read_src_do_position_query (GstDvdReadSrc * src, GstQuery * query)
1406 {
1407 GstFormat format;
1408 gint64 val;
1410 gst_query_parse_position (query, &format, NULL);
1412 switch (format) {
1413 case GST_FORMAT_BYTES:{
1414 val = (gint64) src->cur_pack * DVD_VIDEO_LB_LEN;
1415 break;
1416 }
1417 default:{
1418 if (format == sector_format) {
1419 val = src->cur_pack;
1420 } else if (format == title_format) {
1421 val = src->title;
1422 } else if (format == chapter_format) {
1423 val = src->chapter;
1424 } else if (format == angle_format) {
1425 val = src->angle;
1426 } else {
1427 GST_DEBUG_OBJECT (src, "Don't know how to handle format %d (%s)",
1428 format, gst_format_get_name (format));
1429 return FALSE;
1430 }
1431 break;
1432 }
1433 }
1435 GST_LOG_OBJECT (src, "position = %" G_GINT64_FORMAT " %s", val,
1436 gst_format_get_name (format));
1438 gst_query_set_position (query, format, val);
1439 return TRUE;
1440 }
1442 static gboolean
1443 gst_dvd_read_src_do_convert_query (GstDvdReadSrc * src, GstQuery * query)
1444 {
1445 GstFormat src_format, dest_format;
1446 gboolean ret = FALSE;
1447 gint64 src_val, dest_val = -1;
1449 gst_query_parse_convert (query, &src_format, &src_val, &dest_format, NULL);
1451 if (src_format == dest_format) {
1452 dest_val = src_val;
1453 ret = TRUE;
1454 goto done;
1455 }
1457 /* Formats to consider: TIME, DEFAULT, BYTES, title, chapter, sector.
1458 * Note: title and chapter are counted as starting from 0 here, just like
1459 * in the context of seek events. Another note: DEFAULT format is undefined */
1461 if (src_format == GST_FORMAT_BYTES) {
1462 src_format = sector_format;
1463 src_val /= DVD_VIDEO_LB_LEN;
1464 }
1466 if (src_format == sector_format) {
1467 /* SECTOR => xyz */
1468 if (dest_format == GST_FORMAT_TIME && src_val < G_MAXUINT) {
1469 dest_val = gst_dvd_read_src_get_time_for_sector (src, (guint) src_val);
1470 ret = (dest_val >= 0);
1471 } else if (dest_format == GST_FORMAT_BYTES) {
1472 dest_val = src_val * DVD_VIDEO_LB_LEN;
1473 ret = TRUE;
1474 } else {
1475 ret = FALSE;
1476 }
1477 } else if (src_format == title_format) {
1478 /* TITLE => xyz */
1479 if (dest_format == GST_FORMAT_TIME) {
1480 /* not really true, but we use this to trick the base source into
1481 * handling seeks in title-format for us (the source won't know that
1482 * we changed the title in this case) (changing titles should really
1483 * be done with an interface rather than a seek, but for now we're
1484 * stuck with this mechanism. Fix in 0.11) */
1485 dest_val = (GstClockTime) 0;
1486 ret = TRUE;
1487 } else {
1488 ret = FALSE;
1489 }
1490 } else if (src_format == chapter_format) {
1491 /* CHAPTER => xyz */
1492 if (dest_format == GST_FORMAT_TIME) {
1493 if (src->num_chapters >= 0 && src_val < src->num_chapters) {
1494 dest_val = src->chapter_starts[src_val];
1495 ret = TRUE;
1496 }
1497 } else if (dest_format == sector_format) {
1498 } else {
1499 ret = FALSE;
1500 }
1501 } else if (src_format == GST_FORMAT_TIME) {
1502 /* TIME => xyz */
1503 if (dest_format == sector_format || dest_format == GST_FORMAT_BYTES) {
1504 dest_val = gst_dvd_read_src_get_sector_from_time (src, src_val);
1505 ret = (dest_val >= 0);
1506 if (dest_format == GST_FORMAT_BYTES)
1507 dest_val *= DVD_VIDEO_LB_LEN;
1508 } else if (dest_format == chapter_format) {
1509 if (src->chapter_starts != NULL) {
1510 gint i;
1512 for (i = src->num_chapters - 1; i >= 0; --i) {
1513 if (src->chapter_starts && src->chapter_starts[i] >= src_val) {
1514 dest_val = i;
1515 ret = TRUE;
1516 break;
1517 }
1518 }
1519 } else {
1520 ret = FALSE;
1521 }
1522 } else {
1523 ret = FALSE;
1524 }
1525 } else {
1526 ret = FALSE;
1527 }
1529 done:
1531 if (ret) {
1532 gst_query_set_convert (query, src_format, src_val, dest_format, dest_val);
1533 }
1535 return ret;
1536 }
1538 static gboolean
1539 gst_dvd_read_src_src_query (GstBaseSrc * basesrc, GstQuery * query)
1540 {
1541 GstDvdReadSrc *src = GST_DVD_READ_SRC (basesrc);
1542 gboolean started;
1543 gboolean res = TRUE;
1545 GST_LOG_OBJECT (src, "handling %s query",
1546 gst_query_type_get_name (GST_QUERY_TYPE (query)));
1548 GST_OBJECT_LOCK (src);
1549 started = (GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_STARTED));
1550 GST_OBJECT_UNLOCK (src);
1552 if (!started) {
1553 GST_DEBUG_OBJECT (src, "query failed: not started");
1554 return FALSE;
1555 }
1557 switch (GST_QUERY_TYPE (query)) {
1558 case GST_QUERY_DURATION:
1559 GST_OBJECT_LOCK (src);
1560 res = gst_dvd_read_src_do_duration_query (src, query);
1561 GST_OBJECT_UNLOCK (src);
1562 break;
1563 case GST_QUERY_POSITION:
1564 GST_OBJECT_LOCK (src);
1565 res = gst_dvd_read_src_do_position_query (src, query);
1566 GST_OBJECT_UNLOCK (src);
1567 break;
1568 case GST_QUERY_CONVERT:
1569 GST_OBJECT_LOCK (src);
1570 res = gst_dvd_read_src_do_convert_query (src, query);
1571 GST_OBJECT_UNLOCK (src);
1572 break;
1573 default:
1574 res = GST_BASE_SRC_CLASS (parent_class)->query (basesrc, query);
1575 break;
1576 }
1578 return res;
1579 }
1581 static gboolean
1582 gst_dvd_read_src_goto_sector (GstDvdReadSrc * src, int angle)
1583 {
1584 gint seek_to = src->cur_pack;
1585 gint chapter, next, cur, i;
1587 /* retrieve position */
1588 src->cur_pack = 0;
1589 GST_DEBUG_OBJECT (src, "Goto sector %d, angle %d, within %d chapters",
1590 seek_to, angle, src->num_chapters);
1592 for (i = 0; i < src->num_chapters; i++) {
1593 gint c1, c2;
1595 cur_title_get_chapter_bounds (src, i, &c1, &c2);
1596 GST_DEBUG_OBJECT (src, " Looking in chapter %d, bounds: %d %d", i, c1, c2);
1598 for (next = cur = c1; cur < c2;) {
1599 gint first = src->cur_pgc->cell_playback[cur].first_sector;
1600 gint last = src->cur_pgc->cell_playback[cur].last_sector;
1601 GST_DEBUG_OBJECT (src, "Cell %d sector bounds: %d %d", cur, first, last);
1602 /* seeking to 0 should end up at first chapter in any case */
1603 if ((seek_to >= first && seek_to <= last) || (seek_to == 0 && i == 0)) {
1604 GST_DEBUG_OBJECT (src, "Seek target found in chapter %d", i);
1605 chapter = i;
1606 goto done;
1607 }
1608 cur = next;
1609 if (src->cur_pgc->cell_playback[cur].block_type == BLOCK_TYPE_ANGLE_BLOCK)
1610 cur += angle;
1611 next = gst_dvd_read_src_get_next_cell (src, src->cur_pgc, cur);
1612 }
1613 }
1615 GST_DEBUG_OBJECT (src, "Seek to sector %u failed", seek_to);
1617 return FALSE;
1619 done:
1620 {
1621 /* so chapter $chapter and cell $cur contain our sector
1622 * of interest. Let's go there! */
1623 GST_INFO_OBJECT (src, "Seek succeeded, going to chapter %u, cell %u",
1624 chapter + 1, cur);
1626 gst_dvd_read_src_goto_chapter (src, chapter);
1627 src->cur_cell = cur;
1628 src->next_cell = next;
1629 src->new_cell = FALSE;
1630 src->cur_pack = seek_to;
1632 return TRUE;
1633 }
1634 }
1637 /*** URI interface ***/
1639 static GstURIType
1640 gst_dvd_read_src_uri_get_type (void)
1641 {
1642 return GST_URI_SRC;
1643 }
1645 static gchar **
1646 gst_dvd_read_src_uri_get_protocols (void)
1647 {
1648 static gchar *protocols[] = { (gchar *) "dvd", NULL };
1650 return protocols;
1651 }
1653 static const gchar *
1654 gst_dvd_read_src_uri_get_uri (GstURIHandler * handler)
1655 {
1656 GstDvdReadSrc *src = GST_DVD_READ_SRC (handler);
1658 GST_OBJECT_LOCK (src);
1660 g_free (src->last_uri);
1661 src->last_uri = g_strdup_printf ("dvd://%d,%d,%d", src->uri_title,
1662 src->uri_chapter, src->uri_angle);
1664 GST_OBJECT_UNLOCK (src);
1666 return src->last_uri;
1667 }
1669 static gboolean
1670 gst_dvd_read_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
1671 {
1672 GstDvdReadSrc *src = GST_DVD_READ_SRC (handler);
1673 gboolean ret;
1674 gchar *protocol;
1676 protocol = gst_uri_get_protocol (uri);
1677 ret = (protocol != NULL && g_str_equal (protocol, "dvd"));
1678 g_free (protocol);
1679 protocol = NULL;
1681 if (!ret)
1682 return ret;
1684 /* parse out the new t/c/a and seek to them */
1685 {
1686 gchar *location = NULL;
1687 gchar **strs;
1688 gchar **strcur;
1689 gint pos = 0;
1691 location = gst_uri_get_location (uri);
1693 if (!location)
1694 return ret;
1696 GST_OBJECT_LOCK (src);
1698 src->uri_title = 1;
1699 src->uri_chapter = 1;
1700 src->uri_angle = 1;
1702 strcur = strs = g_strsplit (location, ",", 0);
1703 while (strcur && *strcur) {
1704 gint val;
1706 if (!sscanf (*strcur, "%d", &val))
1707 break;
1709 if (val <= 0) {
1710 g_warning ("Invalid value %d in URI '%s'. Must be 1 or greater",
1711 val, location);
1712 break;
1713 }
1715 switch (pos) {
1716 case 0:
1717 src->uri_title = val;
1718 break;
1719 case 1:
1720 src->uri_chapter = val;
1721 break;
1722 case 2:
1723 src->uri_angle = val;
1724 break;
1725 }
1727 strcur++;
1728 pos++;
1729 }
1731 if (pos > 0 && GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_STARTED)) {
1732 src->title = src->uri_title - 1;
1733 src->chapter = src->uri_chapter - 1;
1734 src->angle = src->uri_angle - 1;
1735 src->new_seek = TRUE;
1736 }
1738 GST_OBJECT_UNLOCK (src);
1740 g_strfreev (strs);
1741 g_free (location);
1742 }
1744 return ret;
1745 }
1747 static void
1748 gst_dvd_read_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
1749 {
1750 GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
1752 iface->get_type = gst_dvd_read_src_uri_get_type;
1753 iface->get_protocols = gst_dvd_read_src_uri_get_protocols;
1754 iface->get_uri = gst_dvd_read_src_uri_get_uri;
1755 iface->set_uri = gst_dvd_read_src_uri_set_uri;
1756 }
1758 static void
1759 gst_dvd_read_src_do_init (GType dvdreadsrc_type)
1760 {
1761 static const GInterfaceInfo urihandler_info = {
1762 gst_dvd_read_src_uri_handler_init,
1763 NULL,
1764 NULL
1765 };
1767 g_type_add_interface_static (dvdreadsrc_type, GST_TYPE_URI_HANDLER,
1768 &urihandler_info);
1770 title_format = gst_format_register ("title", "DVD title");
1771 angle_format = gst_format_register ("angle", "DVD angle");
1772 sector_format = gst_format_register ("sector", "DVD sector");
1773 chapter_format = gst_format_register ("chapter", "DVD chapter");
1774 }
1776 static gboolean
1777 plugin_init (GstPlugin * plugin)
1778 {
1779 GST_DEBUG_CATEGORY_INIT (gstgst_dvd_read_src_debug, "dvdreadsrc", 0,
1780 "DVD reader element based on dvdreadsrc");
1782 #ifdef ENABLE_NLS
1783 GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
1784 LOCALEDIR);
1785 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
1786 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
1787 #endif /* ENABLE_NLS */
1789 if (!gst_element_register (plugin, "dvdreadsrc", GST_RANK_SECONDARY,
1790 GST_TYPE_DVD_READ_SRC)) {
1791 return FALSE;
1792 }
1794 return TRUE;
1795 }
1797 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1798 GST_VERSION_MINOR,
1799 "dvdread",
1800 "Access a DVD with dvdread",
1801 plugin_init, VERSION, "GPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);