mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-27 20:21:24 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/ext/dvdread/dvdreadsrc.c
Nirbheek Chauhan 5ae5b2d3c7 plugins: Use <stdint.h> instead of _stdint.h 
_stdint.h is generated by Autotools and we don't really need it. All
supported platforms now ship with stdint.h. The only stickler was MSVC,
and since Visual Studio 2015 it also ships stdint.h now.
2016-08-19 13:03:29 +01:00

1811 lines
52 KiB
C
Raw Blame History

/* GStreamer DVD title source
* Copyright (C) 1999 Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) 2001 Billy Biggs <vektor@dumbterm.net>.
* Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "dvdreadsrc.h"
#include <gmodule.h>
#include <gst/gst-i18n-plugin.h>
GST_DEBUG_CATEGORY_STATIC (gstgst_dvd_read_src_debug);
#define GST_CAT_DEFAULT (gstgst_dvd_read_src_debug)
enum
{
ARG_0,
ARG_DEVICE,
ARG_TITLE,
ARG_CHAPTER,
ARG_ANGLE
};
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/mpeg, mpegversion=2, systemstream=(boolean)true"));
static GstFormat title_format;
static GstFormat angle_format;
static GstFormat sector_format;
static GstFormat chapter_format;
static gboolean gst_dvd_read_src_start (GstBaseSrc * basesrc);
static gboolean gst_dvd_read_src_stop (GstBaseSrc * basesrc);
static GstFlowReturn gst_dvd_read_src_create (GstPushSrc * pushsrc,
GstBuffer ** buf);
static gboolean gst_dvd_read_src_src_query (GstBaseSrc * basesrc,
GstQuery * query);
static gboolean gst_dvd_read_src_src_event (GstBaseSrc * basesrc,
GstEvent * event);
static gboolean gst_dvd_read_src_goto_title (GstDvdReadSrc * src, gint title,
gint angle);
static gboolean gst_dvd_read_src_goto_chapter (GstDvdReadSrc * src,
gint chapter);
static gboolean gst_dvd_read_src_goto_sector (GstDvdReadSrc * src, gint angle);
static void gst_dvd_read_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_dvd_read_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstEvent *gst_dvd_read_src_make_clut_change_event (GstDvdReadSrc * src,
const guint * clut);
static gboolean gst_dvd_read_src_get_size (GstDvdReadSrc * src, gint64 * size);
static gboolean gst_dvd_read_src_do_seek (GstBaseSrc * src, GstSegment * s);
static gint64 gst_dvd_read_src_convert_timecode (dvd_time_t * time);
static gint gst_dvd_read_src_get_next_cell (GstDvdReadSrc * src,
pgc_t * pgc, gint cell);
static GstClockTime gst_dvd_read_src_get_time_for_sector (GstDvdReadSrc * src,
guint sector);
static gint gst_dvd_read_src_get_sector_from_time (GstDvdReadSrc * src,
GstClockTime ts);
static void gst_dvd_read_src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
#define gst_dvd_read_src_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstDvdReadSrc, gst_dvd_read_src, GST_TYPE_PUSH_SRC,
G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER,
gst_dvd_read_src_uri_handler_init));
static void
gst_dvd_read_src_finalize (GObject * object)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (object);
g_free (src->location);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_dvd_read_src_init (GstDvdReadSrc * src)
{
src->dvd = NULL;
src->vts_file = NULL;
src->vmg_file = NULL;
src->dvd_title = NULL;
src->location = g_strdup ("/dev/dvd");
src->first_seek = TRUE;
src->new_seek = TRUE;
src->new_cell = TRUE;
src->change_cell = FALSE;
src->uri_title = 1;
src->uri_chapter = 1;
src->uri_angle = 1;
src->title_lang_event_pending = NULL;
src->pending_clut_event = NULL;
gst_pad_use_fixed_caps (GST_BASE_SRC_PAD (src));
gst_pad_set_caps (GST_BASE_SRC_PAD (src),
gst_static_pad_template_get_caps (&srctemplate));
}
static gboolean
gst_dvd_read_src_is_seekable (GstBaseSrc * src)
{
return TRUE;
}
static void
gst_dvd_read_src_class_init (GstDvdReadSrcClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
GstPushSrcClass *gstpushsrc_class = GST_PUSH_SRC_CLASS (klass);
GstBaseSrcClass *gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
gobject_class->finalize = gst_dvd_read_src_finalize;
gobject_class->set_property = gst_dvd_read_src_set_property;
gobject_class->get_property = gst_dvd_read_src_get_property;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE,
g_param_spec_string ("device", "Device",
"DVD device location", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TITLE,
g_param_spec_int ("title", "title", "title",
1, 999, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CHAPTER,
g_param_spec_int ("chapter", "chapter", "chapter",
1, 999, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ANGLE,
g_param_spec_int ("angle", "angle", "angle",
1, 999, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_add_static_pad_template (gstelement_class, &srctemplate);
gst_element_class_set_static_metadata (gstelement_class, "DVD Source",
"Source/File/DVD",
"Access a DVD title/chapter/angle using libdvdread",
"Erik Walthinsen <omega@cse.ogi.edu>");
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_dvd_read_src_start);
gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_dvd_read_src_stop);
gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_dvd_read_src_src_query);
gstbasesrc_class->event = GST_DEBUG_FUNCPTR (gst_dvd_read_src_src_event);
gstbasesrc_class->do_seek = GST_DEBUG_FUNCPTR (gst_dvd_read_src_do_seek);
gstbasesrc_class->is_seekable =
GST_DEBUG_FUNCPTR (gst_dvd_read_src_is_seekable);
gstpushsrc_class->create = GST_DEBUG_FUNCPTR (gst_dvd_read_src_create);
title_format = gst_format_register ("title", "DVD title");
angle_format = gst_format_register ("angle", "DVD angle");
sector_format = gst_format_register ("sector", "DVD sector");
chapter_format = gst_format_register ("chapter", "DVD chapter");
}
static gboolean
gst_dvd_read_src_start (GstBaseSrc * basesrc)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (basesrc);
g_return_val_if_fail (src->location != NULL, FALSE);
GST_DEBUG_OBJECT (src, "Opening DVD '%s'", src->location);
if ((src->dvd = DVDOpen (src->location)) == NULL)
goto open_failed;
/* Load the video manager to find out the information about the titles */
GST_DEBUG_OBJECT (src, "Loading VMG info");
if (!(src->vmg_file = ifoOpen (src->dvd, 0)))
goto ifo_open_failed;
src->tt_srpt = src->vmg_file->tt_srpt;
src->title = src->uri_title - 1;
src->chapter = src->uri_chapter - 1;
src->angle = src->uri_angle - 1;
if (!gst_dvd_read_src_goto_title (src, src->title, src->angle))
goto title_open_failed;
if (!gst_dvd_read_src_goto_chapter (src, src->chapter))
goto chapter_open_failed;
src->new_seek = FALSE;
src->change_cell = TRUE;
src->first_seek = TRUE;
return TRUE;
/* ERRORS */
open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD")),
("DVDOpen(%s) failed: %s", src->location, g_strerror (errno)));
return FALSE;
}
ifo_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD")),
("ifoOpen() failed: %s", g_strerror (errno)));
return FALSE;
}
title_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d"), src->uri_title), (NULL));
return FALSE;
}
chapter_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Failed to go to chapter %d of DVD title %d"),
src->uri_chapter, src->uri_title), (NULL));
return FALSE;
}
}
static gboolean
gst_dvd_read_src_stop (GstBaseSrc * basesrc)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (basesrc);
if (src->vts_file) {
ifoClose (src->vts_file);
src->vts_file = NULL;
}
if (src->vmg_file) {
ifoClose (src->vmg_file);
src->vmg_file = NULL;
}
if (src->dvd_title) {
DVDCloseFile (src->dvd_title);
src->dvd_title = NULL;
}
if (src->dvd) {
DVDClose (src->dvd);
src->dvd = NULL;
}
src->new_cell = TRUE;
src->new_seek = TRUE;
src->change_cell = FALSE;
src->chapter = 0;
src->title = 0;
src->need_newsegment = TRUE;
src->vts_tmapt = NULL;
if (src->title_lang_event_pending) {
gst_event_unref (src->title_lang_event_pending);
src->title_lang_event_pending = NULL;
}
if (src->pending_clut_event) {
gst_event_unref (src->pending_clut_event);
src->pending_clut_event = NULL;
}
if (src->chapter_starts) {
g_free (src->chapter_starts);
src->chapter_starts = NULL;
}
GST_LOG_OBJECT (src, "closed DVD");
return TRUE;
}
static void
cur_title_get_chapter_pgc (GstDvdReadSrc * src, gint chapter, gint * p_pgn,
gint * p_pgc_id, pgc_t ** p_pgc)
{
pgc_t *pgc;
gint pgn, pgc_id;
g_assert (chapter >= 0 && chapter < src->num_chapters);
pgc_id = src->vts_ptt_srpt->title[src->ttn - 1].ptt[chapter].pgcn;
pgn = src->vts_ptt_srpt->title[src->ttn - 1].ptt[chapter].pgn;
pgc = src->vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
*p_pgn = pgn;
*p_pgc_id = pgc_id;
*p_pgc = pgc;
}
static void
cur_title_get_chapter_bounds (GstDvdReadSrc * src, gint chapter,
gint * p_first_cell, gint * p_last_cell)
{
pgc_t *pgc;
gint pgn, pgc_id, pgn_next_ch;
g_assert (chapter >= 0 && chapter < src->num_chapters);
cur_title_get_chapter_pgc (src, chapter, &pgn, &pgc_id, &pgc);
*p_first_cell = pgc->program_map[pgn - 1] - 1;
/* last cell is used as a 'up to boundary', not 'up to and including',
* i.e. it is the first cell not included in the chapter range */
if (chapter == (src->num_chapters - 1)) {
*p_last_cell = pgc->nr_of_cells;
} else {
pgn_next_ch = src->vts_ptt_srpt->title[src->ttn - 1].ptt[chapter + 1].pgn;
*p_last_cell = pgc->program_map[pgn_next_ch - 1] - 1;
}
GST_DEBUG_OBJECT (src, "Chapter %d bounds: %d %d (within %d cells)",
chapter, *p_first_cell, *p_last_cell, pgc->nr_of_cells);
}
static gboolean
gst_dvd_read_src_goto_chapter (GstDvdReadSrc * src, gint chapter)
{
gint i;
/* make sure the chapter number is valid for this title */
if (chapter < 0 || chapter >= src->num_chapters) {
GST_WARNING_OBJECT (src, "invalid chapter %d (only %d available)",
chapter, src->num_chapters);
chapter = CLAMP (chapter, 0, src->num_chapters - 1);
}
/* determine which program chain we want to watch. This is
* based on the chapter number */
cur_title_get_chapter_pgc (src, chapter, &src->pgn, &src->pgc_id,
&src->cur_pgc);
cur_title_get_chapter_bounds (src, chapter, &src->start_cell,
&src->last_cell);
GST_LOG_OBJECT (src, "Opened chapter %d - cell %d-%d", chapter + 1,
src->start_cell, src->last_cell);
/* retrieve position */
src->cur_pack = 0;
for (i = 0; i < chapter; i++) {
gint c1, c2;
cur_title_get_chapter_bounds (src, i, &c1, &c2);
while (c1 < c2) {
src->cur_pack +=
src->cur_pgc->cell_playback[c1].last_sector -
src->cur_pgc->cell_playback[c1].first_sector;
++c1;
}
}
/* prepare reading for new cell */
src->new_cell = TRUE;
src->next_cell = src->start_cell;
src->chapter = chapter;
if (src->pending_clut_event)
gst_event_unref (src->pending_clut_event);
src->pending_clut_event =
gst_dvd_read_src_make_clut_change_event (src, src->cur_pgc->palette);
return TRUE;
}
static void
gst_dvd_read_src_get_chapter_starts (GstDvdReadSrc * src)
{
GstClockTime uptohere;
guint c;
g_free (src->chapter_starts);
src->chapter_starts = g_new (GstClockTime, src->num_chapters);
uptohere = (GstClockTime) 0;
for (c = 0; c < src->num_chapters; ++c) {
GstClockTime chapter_duration = 0;
gint cell_start, cell_end, cell;
gint pgn, pgc_id;
pgc_t *pgc;
cur_title_get_chapter_pgc (src, c, &pgn, &pgc_id, &pgc);
cur_title_get_chapter_bounds (src, c, &cell_start, &cell_end);
cell = cell_start;
while (cell < cell_end) {
dvd_time_t *cell_duration;
cell_duration = &pgc->cell_playback[cell].playback_time;
chapter_duration += gst_dvd_read_src_convert_timecode (cell_duration);
cell = gst_dvd_read_src_get_next_cell (src, pgc, cell);
}
src->chapter_starts[c] = uptohere;
GST_INFO_OBJECT (src, "[%02u] Chapter %02u starts at %" GST_TIME_FORMAT
", dur = %" GST_TIME_FORMAT ", cells %d-%d", src->title + 1, c + 1,
GST_TIME_ARGS (uptohere), GST_TIME_ARGS (chapter_duration),
cell_start, cell_end);
uptohere += chapter_duration;
}
}
static gboolean
gst_dvd_read_src_goto_title (GstDvdReadSrc * src, gint title, gint angle)
{
GstStructure *s;
gchar lang_code[3] = { '\0', '\0', '\0' }, *t;
pgc_t *pgc0;
gint title_set_nr;
gint num_titles;
gint pgn0, pgc0_id;
gint i;
/* make sure our title number is valid */
num_titles = src->tt_srpt->nr_of_srpts;
GST_INFO_OBJECT (src, "There are %d titles on this DVD", num_titles);
if (title < 0 || title >= num_titles)
goto invalid_title;
src->num_chapters = src->tt_srpt->title[title].nr_of_ptts;
GST_INFO_OBJECT (src, "Title %d has %d chapters", title + 1,
src->num_chapters);
/* make sure the angle number is valid for this title */
src->num_angles = src->tt_srpt->title[title].nr_of_angles;
GST_LOG_OBJECT (src, "Title %d has %d angles", title + 1, src->num_angles);
if (angle < 0 || angle >= src->num_angles) {
GST_WARNING_OBJECT (src, "Invalid angle %d (only %d available)",
angle, src->num_angles);
angle = CLAMP (angle, 0, src->num_angles - 1);
}
/* load the VTS information for the title set our title is in */
title_set_nr = src->tt_srpt->title[title].title_set_nr;
src->vts_file = ifoOpen (src->dvd, title_set_nr);
if (src->vts_file == NULL)
goto ifo_open_failed;
src->ttn = src->tt_srpt->title[title].vts_ttn;
src->vts_ptt_srpt = src->vts_file->vts_ptt_srpt;
/* interactive title? */
if (src->num_chapters > 0 &&
src->vts_ptt_srpt->title[src->ttn - 1].ptt[0].pgn == 0) {
goto commands_only_pgc;
}
/* we've got enough info, time to open the title set data */
src->dvd_title = DVDOpenFile (src->dvd, title_set_nr, DVD_READ_TITLE_VOBS);
if (src->dvd_title == NULL)
goto title_open_failed;
GST_INFO_OBJECT (src, "Opened title %d, angle %d", title + 1, angle);
src->title = title;
src->angle = angle;
/* build event */
if (src->title_lang_event_pending) {
gst_event_unref (src->title_lang_event_pending);
src->title_lang_event_pending = NULL;
}
s = gst_structure_new ("application/x-gst-dvd",
"event", G_TYPE_STRING, "dvd-lang-codes", NULL);
/* so we can filter out invalid/unused streams (same for all chapters) */
cur_title_get_chapter_pgc (src, 0, &pgn0, &pgc0_id, &pgc0);
/* audio */
for (i = 0; i < src->vts_file->vtsi_mat->nr_of_vts_audio_streams; i++) {
const audio_attr_t *a;
/* audio stream present? */
if (pgc0 != NULL && (pgc0->audio_control[i] & 0x8000) == 0)
continue;
a = &src->vts_file->vtsi_mat->vts_audio_attr[i];
t = g_strdup_printf ("audio-%d-format", i);
gst_structure_set (s, t, G_TYPE_INT, (int) a->audio_format, NULL);
g_free (t);
t = g_strdup_printf ("audio-%d-stream", i);
gst_structure_set (s, t, G_TYPE_INT, (int) i, NULL);
g_free (t);
if (a->lang_type) {
t = g_strdup_printf ("audio-%d-language", i);
lang_code[0] = (a->lang_code >> 8) & 0xff;
lang_code[1] = a->lang_code & 0xff;
gst_structure_set (s, t, G_TYPE_STRING, lang_code, NULL);
g_free (t);
} else {
lang_code[0] = '\0';
}
GST_INFO_OBJECT (src, "[%02d] Audio %02d: lang='%s', format=%d",
src->title + 1, i, lang_code, (gint) a->audio_format);
}
/* subtitle */
for (i = 0; i < src->vts_file->vtsi_mat->nr_of_vts_subp_streams; i++) {
const subp_attr_t *u;
const video_attr_t *v;
gint sid;
/* subpicture stream present? */
if (pgc0 != NULL && (pgc0->subp_control[i] & 0x80000000) == 0)
continue;
u = &src->vts_file->vtsi_mat->vts_subp_attr[i];
v = &src->vts_file->vtsi_mat->vts_video_attr;
sid = i;
if (pgc0 != NULL) {
if (v->display_aspect_ratio == 0) /* 4:3 */
sid = (pgc0->subp_control[i] >> 24) & 0x1f;
else if (v->display_aspect_ratio == 3) /* 16:9 */
sid = (pgc0->subp_control[i] >> 8) & 0x1f;
}
if (u->type) {
t = g_strdup_printf ("subpicture-%d-language", i);
lang_code[0] = (u->lang_code >> 8) & 0xff;
lang_code[1] = u->lang_code & 0xff;
gst_structure_set (s, t, G_TYPE_STRING, lang_code, NULL);
t = g_strdup_printf ("subpicture-%d-stream", i);
gst_structure_set (s, t, G_TYPE_INT, (int) sid, NULL);
g_free (t);
t = g_strdup_printf ("subpicture-%d-format", i);
gst_structure_set (s, t, G_TYPE_INT, (int) 0, NULL);
g_free (t);
} else {
lang_code[0] = '\0';
}
GST_INFO_OBJECT (src, "[%02d] Subtitle %02d: lang='%s', type=%d",
src->title + 1, sid, lang_code, u->type);
}
src->title_lang_event_pending =
gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s);
/* dump seek tables */
src->vts_tmapt = src->vts_file->vts_tmapt;
if (src->vts_tmapt) {
gint i, j;
GST_LOG_OBJECT (src, "nr_of_tmaps = %d", src->vts_tmapt->nr_of_tmaps);
for (i = 0; i < src->vts_tmapt->nr_of_tmaps; ++i) {
GST_LOG_OBJECT (src, "======= Table %d ===================", i);
GST_LOG_OBJECT (src, "Offset relative to VTS_TMAPTI: %d",
src->vts_tmapt->tmap_offset[i]);
GST_LOG_OBJECT (src, "Time unit (seconds) : %d",
src->vts_tmapt->tmap[i].tmu);
GST_LOG_OBJECT (src, "Number of entries : %d",
src->vts_tmapt->tmap[i].nr_of_entries);
for (j = 0; j < src->vts_tmapt->tmap[i].nr_of_entries; j++) {
guint64 time;
time = (guint64) src->vts_tmapt->tmap[i].tmu * (j + 1) * GST_SECOND;
GST_LOG_OBJECT (src, "Time: %" GST_TIME_FORMAT " VOBU "
"Sector: 0x%08x %s", GST_TIME_ARGS (time),
src->vts_tmapt->tmap[i].map_ent[j] & 0x7fffffff,
(src->vts_tmapt->tmap[i].map_ent[j] >> 31) ? "discontinuity" : "");
}
}
} else {
GST_WARNING_OBJECT (src, "no vts_tmapt - seeking will suck");
}
gst_dvd_read_src_get_chapter_starts (src);
return TRUE;
/* ERRORS */
invalid_title:
{
GST_WARNING_OBJECT (src, "Invalid title %d (only %d available)",
title, num_titles);
return FALSE;
}
ifo_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d"), title_set_nr),
("ifoOpen(%d) failed: %s", title_set_nr, g_strerror (errno)));
return FALSE;
}
title_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d"), title_set_nr),
("Can't open title VOBS (VTS_%02d_1.VOB)", title_set_nr));
return FALSE;
}
commands_only_pgc:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d. Interactive titles are not supported "
"by this element"), title_set_nr),
("Commands-only PGC, not supported, use rsndvdbin"));
return FALSE;
}
}
/* FIXME: double-check this function, compare against original */
static gint
gst_dvd_read_src_get_next_cell (GstDvdReadSrc * src, pgc_t * pgc, gint cell)
{
/* Check if we're entering an angle block. */
if (pgc->cell_playback[cell].block_type != BLOCK_TYPE_ANGLE_BLOCK)
return (cell + 1);
while (pgc->cell_playback[cell].block_mode != BLOCK_MODE_LAST_CELL)
++cell;
return cell + 1;
}
/* Returns true if the pack is a NAV pack */
static gboolean
gst_dvd_read_src_is_nav_pack (const guint8 * data, gint lbn, dsi_t * dsi_pack)
{
if (GST_READ_UINT32_BE (data + 0x26) != 0x000001BF)
return FALSE;
/* Check that this is substream 0 (PCI) */
if (data[0x2c] != 0)
return FALSE;
if (GST_READ_UINT32_BE (data + 0x400) != 0x000001BF)
return FALSE;
/* Check that this is substream 1 (DSI) */
if (data[0x406] != 1)
return FALSE;
/* Check sizes of PCI and DSI packets */
if (GST_READ_UINT16_BE (data + 0x2a) != 0x03d4)
return FALSE;
if (GST_READ_UINT16_BE (data + 0x404) != 0x03fa)
return FALSE;
/* Read the DSI packet into the provided struct and check it */
navRead_DSI (dsi_pack, (unsigned char *) data + DSI_START_BYTE);
if (lbn != dsi_pack->dsi_gi.nv_pck_lbn)
return FALSE;
return TRUE;
}
/* find time for sector from index, returns NONE if there is no exact match */
static GstClockTime
gst_dvd_read_src_get_time_for_sector (GstDvdReadSrc * src, guint sector)
{
gint i, j;
if (src->vts_tmapt == NULL || src->vts_tmapt->nr_of_tmaps == 0)
return GST_CLOCK_TIME_NONE;
for (i = 0; i < src->vts_tmapt->nr_of_tmaps; ++i) {
for (j = 0; j < src->vts_tmapt->tmap[i].nr_of_entries; ++j) {
if ((src->vts_tmapt->tmap[i].map_ent[j] & 0x7fffffff) == sector)
return (guint64) src->vts_tmapt->tmap[i].tmu * (j + 1) * GST_SECOND;
}
}
if (sector == 0)
return (GstClockTime) 0;
return GST_CLOCK_TIME_NONE;
}
/* returns the sector in the index at (or before) the given time, or -1 */
static gint
gst_dvd_read_src_get_sector_from_time (GstDvdReadSrc * src, GstClockTime ts)
{
gint sector, j;
if (src->vts_tmapt == NULL || src->vts_tmapt->nr_of_tmaps < src->ttn)
return -1;
sector = src->vts_tmapt->tmap[src->ttn - 1].map_ent[0] & 0x7fffffff;
for (j = 0; j < src->vts_tmapt->tmap[src->ttn - 1].nr_of_entries; ++j) {
GstClockTime entry_time;
entry_time =
(guint64) src->vts_tmapt->tmap[src->ttn - 1].tmu * (j + 1) * GST_SECOND;
if (entry_time <= ts) {
sector = src->vts_tmapt->tmap[src->ttn - 1].map_ent[j] & 0x7fffffff;
}
if (entry_time >= ts) {
return sector;
}
}
if (ts == 0)
return 0;
return -1;
}
typedef enum
{
GST_DVD_READ_OK = 0,
GST_DVD_READ_ERROR = -1,
GST_DVD_READ_EOS = -2,
GST_DVD_READ_AGAIN = -3
} GstDvdReadReturn;
static GstDvdReadReturn
gst_dvd_read_src_read (GstDvdReadSrc * src, gint angle, gint new_seek,
GstBuffer ** p_buf)
{
GstBuffer *buf;
GstSegment *seg;
guint8 oneblock[DVD_VIDEO_LB_LEN];
dsi_t dsi_pack;
guint next_vobu, cur_output_size;
gint len;
gint retries;
gint64 next_time;
GstMapInfo map;
seg = &(GST_BASE_SRC (src)->segment);
/* playback by cell in this pgc, starting at the cell for our chapter */
if (new_seek)
src->cur_cell = src->start_cell;
again:
if (src->cur_cell >= src->last_cell) {
/* advance to next chapter */
if (src->chapter == (src->num_chapters - 1) ||
(seg->format == chapter_format && seg->stop != -1 &&
src->chapter == (seg->stop - 1))) {
GST_DEBUG_OBJECT (src, "end of chapter segment");
goto eos;
}
GST_INFO_OBJECT (src, "end of chapter %d, switch to next",
src->chapter + 1);
++src->chapter;
gst_dvd_read_src_goto_chapter (src, src->chapter);
return GST_DVD_READ_AGAIN;
}
if (src->new_cell || new_seek) {
if (!new_seek) {
src->cur_cell = src->next_cell;
if (src->cur_cell >= src->last_cell) {
GST_LOG_OBJECT (src, "last cell in chapter");
goto again;
}
}
/* take angle into account */
if (src->cur_pgc->cell_playback[src->cur_cell].block_type
== BLOCK_TYPE_ANGLE_BLOCK)
src->cur_cell += angle;
/* calculate next cell */
src->next_cell =
gst_dvd_read_src_get_next_cell (src, src->cur_pgc, src->cur_cell);
/* we loop until we're out of this cell */
src->cur_pack = src->cur_pgc->cell_playback[src->cur_cell].first_sector;
src->new_cell = FALSE;
GST_DEBUG_OBJECT (src, "Starting new cell %d @ pack %d", src->cur_cell,
src->cur_pack);
}
if (src->cur_pack >= src->cur_pgc->cell_playback[src->cur_cell].last_sector) {
src->new_cell = TRUE;
GST_LOG_OBJECT (src, "Beyond last sector for cell %d, going to next cell",
src->cur_cell);
return GST_DVD_READ_AGAIN;
}
/* read NAV packet */
retries = 0;
nav_retry:
retries++;
len = DVDReadBlocks (src->dvd_title, src->cur_pack, 1, oneblock);
if (len != 1)
goto read_error;
if (!gst_dvd_read_src_is_nav_pack (oneblock, src->cur_pack, &dsi_pack)) {
GST_LOG_OBJECT (src, "Skipping nav packet @ pack %d", src->cur_pack);
src->cur_pack++;
if (retries < 2000) {
goto nav_retry;
} else {
GST_LOG_OBJECT (src, "No nav packet @ pack %d after 2000 blocks",
src->cur_pack);
goto read_error;
}
}
/* determine where we go next. These values are the ones we
* mostly care about */
cur_output_size = dsi_pack.dsi_gi.vobu_ea + 1;
/* If we're not at the end of this cell, we can determine the next
* VOBU to display using the VOBU_SRI information section of the
* DSI. Using this value correctly follows the current angle,
* avoiding the doubled scenes in The Matrix, and makes our life
* really happy.
*
* Otherwise, we set our next address past the end of this cell to
* force the code above to go to the next cell in the program. */
if (dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL) {
next_vobu = src->cur_pack + (dsi_pack.vobu_sri.next_vobu & 0x7fffffff);
} else {
next_vobu = src->cur_pgc->cell_playback[src->cur_cell].last_sector + 1;
}
g_assert (cur_output_size < 1024);
/* create the buffer (TODO: use buffer pool?) */
buf =
gst_buffer_new_allocate (NULL, cur_output_size * DVD_VIDEO_LB_LEN, NULL);
GST_LOG_OBJECT (src, "Going to read %u sectors @ pack %d", cur_output_size,
src->cur_pack);
gst_buffer_map (buf, &map, GST_MAP_WRITE);
/* read in and output cursize packs */
len =
DVDReadBlocks (src->dvd_title, src->cur_pack, cur_output_size, map.data);
if (len != cur_output_size)
goto block_read_error;
gst_buffer_unmap (buf, &map);
gst_buffer_resize (buf, 0, cur_output_size * DVD_VIDEO_LB_LEN);
/* GST_BUFFER_OFFSET (buf) = priv->cur_pack * DVD_VIDEO_LB_LEN; */
GST_BUFFER_TIMESTAMP (buf) =
gst_dvd_read_src_get_time_for_sector (src, src->cur_pack);
*p_buf = buf;
GST_LOG_OBJECT (src, "Read %u sectors", cur_output_size);
src->cur_pack = next_vobu;
next_time = GST_BUFFER_TIMESTAMP (buf);
if (GST_CLOCK_TIME_IS_VALID (next_time) && seg->format == GST_FORMAT_TIME &&
GST_CLOCK_TIME_IS_VALID (seg->stop) &&
next_time > seg->stop + 5 * GST_SECOND) {
GST_DEBUG_OBJECT (src, "end of TIME segment");
goto eos;
}
return GST_DVD_READ_OK;
/* ERRORS */
eos:
{
GST_INFO_OBJECT (src, "Reached end-of-segment/stream - EOS");
return GST_DVD_READ_EOS;
}
read_error:
{
GST_ERROR_OBJECT (src, "Read failed for block %d", src->cur_pack);
return GST_DVD_READ_ERROR;
}
block_read_error:
{
GST_ERROR_OBJECT (src, "Read failed for %d blocks at %d",
cur_output_size, src->cur_pack);
gst_buffer_unmap (buf, &map);
gst_buffer_unref (buf);
return GST_DVD_READ_ERROR;
}
}
/* we don't cache the result on purpose */
static gboolean
gst_dvd_read_descrambler_available (void)
{
GModule *module;
gpointer sym;
gsize res;
module = g_module_open ("libdvdcss", 0);
if (module != NULL) {
res = g_module_symbol (module, "dvdcss_open", &sym);
g_module_close (module);
} else {
res = FALSE;
}
return res;
}
static GstFlowReturn
gst_dvd_read_src_create (GstPushSrc * pushsrc, GstBuffer ** p_buf)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (pushsrc);
GstPad *srcpad;
gint res;
g_return_val_if_fail (src->dvd != NULL, GST_FLOW_ERROR);
srcpad = GST_BASE_SRC (src)->srcpad;
if (src->need_newsegment) {
GstSegment seg;
gst_segment_init (&seg, GST_FORMAT_BYTES);
seg.start = src->cur_pack * DVD_VIDEO_LB_LEN;
seg.stop = -1;
seg.time = 0;
gst_pad_push_event (srcpad, gst_event_new_segment (&seg));
src->need_newsegment = FALSE;
}
if (src->new_seek) {
gst_dvd_read_src_goto_title (src, src->title, src->angle);
gst_dvd_read_src_goto_chapter (src, src->chapter);
src->new_seek = FALSE;
src->change_cell = TRUE;
}
if (src->title_lang_event_pending) {
gst_pad_push_event (srcpad, src->title_lang_event_pending);
src->title_lang_event_pending = NULL;
}
if (src->pending_clut_event) {
gst_pad_push_event (srcpad, src->pending_clut_event);
src->pending_clut_event = NULL;
}
/* read it in */
do {
res = gst_dvd_read_src_read (src, src->angle, src->change_cell, p_buf);
} while (res == GST_DVD_READ_AGAIN);
switch (res) {
case GST_DVD_READ_ERROR:{
/* FIXME: figure out a way to detect if scrambling is the problem */
if (!gst_dvd_read_descrambler_available ()) {
GST_ELEMENT_ERROR (src, RESOURCE, READ,
(_("Could not read DVD. This may be because the DVD is encrypted "
"and a DVD decryption library is not installed.")), (NULL));
} else {
GST_ELEMENT_ERROR (src, RESOURCE, READ, (_("Could not read DVD.")),
(NULL));
}
return GST_FLOW_ERROR;
}
case GST_DVD_READ_EOS:{
return GST_FLOW_EOS;
}
case GST_DVD_READ_OK:{
src->change_cell = FALSE;
return GST_FLOW_OK;
}
default:
break;
}
g_return_val_if_reached (GST_FLOW_EOS);
}
static void
gst_dvd_read_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (object);
gboolean started;
GST_OBJECT_LOCK (src);
started = GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_FLAG_STARTED);
switch (prop_id) {
case ARG_DEVICE:{
if (started) {
g_warning ("%s: property '%s' needs to be set before the device is "
"opened", GST_ELEMENT_NAME (src), pspec->name);
break;
}
g_free (src->location);
/* clear the filename if we get a NULL (is that possible?) */
if (g_value_get_string (value) == NULL) {
src->location = g_strdup ("/dev/dvd");
} else {
src->location = g_strdup (g_value_get_string (value));
}
break;
}
case ARG_TITLE:
src->uri_title = g_value_get_int (value);
if (started) {
src->title = src->uri_title - 1;
src->new_seek = TRUE;
}
break;
case ARG_CHAPTER:
src->uri_chapter = g_value_get_int (value);
if (started) {
src->chapter = src->uri_chapter - 1;
src->new_seek = TRUE;
}
break;
case ARG_ANGLE:
src->uri_angle = g_value_get_int (value);
if (started) {
src->angle = src->uri_angle - 1;
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (src);
}
static void
gst_dvd_read_src_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (object);
GST_OBJECT_LOCK (src);
switch (prop_id) {
case ARG_DEVICE:
g_value_set_string (value, src->location);
break;
case ARG_TITLE:
g_value_set_int (value, src->uri_title);
break;
case ARG_CHAPTER:
g_value_set_int (value, src->uri_chapter);
break;
case ARG_ANGLE:
g_value_set_int (value, src->uri_angle);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (src);
}
static gboolean
gst_dvd_read_src_get_size (GstDvdReadSrc * src, gint64 * size)
{
gboolean ret = FALSE;
if (src->dvd_title) {
gssize blocks;
blocks = DVDFileSize (src->dvd_title);
if (blocks >= 0) {
*size = (gint64) blocks *DVD_VIDEO_LB_LEN;
ret = TRUE;
} else {
GST_WARNING_OBJECT (src, "DVDFileSize(%p) failed!", src->dvd_title);
}
}
return ret;
}
/*** Querying and seeking ***/
static gboolean
gst_dvd_read_src_handle_seek_event (GstDvdReadSrc * src, GstEvent * event)
{
GstSeekFlags flags;
GstSeekType cur_type, end_type;
gint64 new_off, total;
GstFormat format;
GstPad *srcpad;
gboolean query_ok;
gdouble rate;
gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &new_off,
&end_type, NULL);
if (rate <= 0.0) {
GST_DEBUG_OBJECT (src, "cannot do backwards playback yet");
return FALSE;
}
if (end_type != GST_SEEK_TYPE_NONE) {
if ((format != chapter_format && format != GST_FORMAT_TIME) ||
end_type != GST_SEEK_TYPE_SET) {
GST_DEBUG_OBJECT (src, "end seek type not supported");
return FALSE;
}
}
if (cur_type != GST_SEEK_TYPE_SET) {
GST_DEBUG_OBJECT (src, "only SEEK_TYPE_SET is supported");
return FALSE;
}
if (format == angle_format) {
GST_OBJECT_LOCK (src);
if (new_off < 0 || new_off >= src->num_angles) {
GST_OBJECT_UNLOCK (src);
GST_DEBUG_OBJECT (src, "invalid angle %d, only %d available",
src->num_angles, src->num_angles);
return FALSE;
}
src->angle = (gint) new_off;
GST_OBJECT_UNLOCK (src);
GST_DEBUG_OBJECT (src, "switched to angle %d", (gint) new_off + 1);
return TRUE;
}
if (format != chapter_format && format != title_format &&
format != GST_FORMAT_BYTES && format != GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (src, "unsupported seek format %d (%s)", format,
gst_format_get_name (format));
return FALSE;
}
if (format == GST_FORMAT_BYTES) {
GST_DEBUG_OBJECT (src, "Requested seek to byte %" G_GUINT64_FORMAT,
new_off);
} else if (format == GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (src, "Requested seek to time %" GST_TIME_FORMAT,
GST_TIME_ARGS (new_off));
if (gst_dvd_read_src_get_sector_from_time (src, new_off) < 0) {
GST_DEBUG_OBJECT (src, "Can't find sector for requested time");
return FALSE;
}
}
srcpad = GST_BASE_SRC_PAD (src);
/* check whether the seek looks reasonable (ie within possible range) */
if (format == GST_FORMAT_BYTES) {
GST_OBJECT_LOCK (src);
query_ok = gst_dvd_read_src_get_size (src, &total);
GST_OBJECT_UNLOCK (src);
} else {
query_ok = gst_pad_query_duration (srcpad, format, &total);
}
if (!query_ok) {
GST_DEBUG_OBJECT (src, "Failed to query duration in format %s",
gst_format_get_name (format));
return FALSE;
}
GST_DEBUG_OBJECT (src, "Total %s: %12" G_GINT64_FORMAT,
gst_format_get_name (format), total);
GST_DEBUG_OBJECT (src, "Seek to %s: %12" G_GINT64_FORMAT,
gst_format_get_name (format), new_off);
if (new_off >= total) {
GST_DEBUG_OBJECT (src, "Seek position out of range");
return FALSE;
}
/* set segment to seek format; this allows us to use the do_seek
* virtual function and let the base source handle all the tricky
* stuff for us. We don't use the segment internally anyway */
/* FIXME: can't take the stream lock here - what to do? */
GST_OBJECT_LOCK (src);
GST_BASE_SRC (src)->segment.format = format;
GST_BASE_SRC (src)->segment.start = 0;
GST_BASE_SRC (src)->segment.stop = total;
GST_BASE_SRC (src)->segment.duration = total;
GST_OBJECT_UNLOCK (src);
return GST_BASE_SRC_CLASS (parent_class)->event (GST_BASE_SRC (src), event);
}
static void
gst_dvd_read_src_get_sector_bounds (GstDvdReadSrc * src, gint * first,
gint * last)
{
gint c1, c2, tmp;
cur_title_get_chapter_bounds (src, 0, &c1, &tmp);
cur_title_get_chapter_bounds (src, src->num_chapters - 1, &tmp, &c2);
*first = src->cur_pgc->cell_playback[c1].first_sector;
*last = src->cur_pgc->cell_playback[c2].last_sector;
}
static gboolean
gst_dvd_read_src_do_seek (GstBaseSrc * basesrc, GstSegment * s)
{
GstDvdReadSrc *src;
src = GST_DVD_READ_SRC (basesrc);
GST_DEBUG_OBJECT (src, "Seeking to %s: %12" G_GINT64_FORMAT,
gst_format_get_name (s->format), s->position);
/* Ignore the first seek to 0, as it breaks starting playback
* from another chapter by seeking back to sector 0 */
if (src->first_seek && s->format == GST_FORMAT_BYTES && s->start == 0) {
src->first_seek = FALSE;
return TRUE;
}
if (s->format == sector_format || s->format == GST_FORMAT_BYTES
|| s->format == GST_FORMAT_TIME) {
guint old;
old = src->cur_pack;
if (s->format == sector_format) {
gint first, last;
gst_dvd_read_src_get_sector_bounds (src, &first, &last);
GST_DEBUG_OBJECT (src, "Format is sector, seeking to %" G_GINT64_FORMAT,
s->position);
src->cur_pack = s->position;
if (src->cur_pack < first)
src->cur_pack = first;
if (src->cur_pack > last)
src->cur_pack = last;
} else if (s->format == GST_FORMAT_TIME) {
gint sector;
GST_DEBUG_OBJECT (src, "Format is time");
sector = gst_dvd_read_src_get_sector_from_time (src, s->position);
GST_DEBUG_OBJECT (src, "Time %" GST_TIME_FORMAT " => sector %d",
GST_TIME_ARGS (s->position), sector);
/* really shouldn't happen, we've checked this earlier ... */
g_return_val_if_fail (sector >= 0, FALSE);
src->cur_pack = sector;
} else {
/* byte format */
gint first, last;
gst_dvd_read_src_get_sector_bounds (src, &first, &last);
GST_DEBUG_OBJECT (src, "Format is byte");
src->cur_pack = s->position / DVD_VIDEO_LB_LEN;
if (((gint64) src->cur_pack * DVD_VIDEO_LB_LEN) != s->position) {
GST_LOG_OBJECT (src, "rounded down offset %" G_GINT64_FORMAT " => %"
G_GINT64_FORMAT, s->position,
(gint64) src->cur_pack * DVD_VIDEO_LB_LEN);
}
src->cur_pack += first;
}
if (!gst_dvd_read_src_goto_sector (src, src->angle)) {
GST_DEBUG_OBJECT (src, "seek to sector 0x%08x failed", src->cur_pack);
src->cur_pack = old;
return FALSE;
}
GST_LOG_OBJECT (src, "seek to sector 0x%08x ok", src->cur_pack);
} else if (s->format == chapter_format) {
if (!gst_dvd_read_src_goto_chapter (src, (gint) s->position)) {
GST_DEBUG_OBJECT (src, "seek to chapter %d failed",
(gint) s->position + 1);
return FALSE;
}
GST_INFO_OBJECT (src, "seek to chapter %d ok", (gint) s->position + 1);
src->chapter = s->position;
} else if (s->format == title_format) {
if (!gst_dvd_read_src_goto_title (src, (gint) s->position, src->angle) ||
!gst_dvd_read_src_goto_chapter (src, 0)) {
GST_DEBUG_OBJECT (src, "seek to title %d failed", (gint) s->position);
return FALSE;
}
src->title = (gint) s->position;
src->chapter = 0;
GST_INFO_OBJECT (src, "seek to title %d ok", src->title + 1);
} else {
g_return_val_if_reached (FALSE);
}
src->need_newsegment = TRUE;
return TRUE;
}
static gboolean
gst_dvd_read_src_src_event (GstBaseSrc * basesrc, GstEvent * event)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (basesrc);
gboolean res;
GST_LOG_OBJECT (src, "handling %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
res = gst_dvd_read_src_handle_seek_event (src, event);
break;
default:
res = GST_BASE_SRC_CLASS (parent_class)->event (basesrc, event);
break;
}
return res;
}
static GstEvent *
gst_dvd_read_src_make_clut_change_event (GstDvdReadSrc * src,
const guint * clut)
{
GstStructure *structure;
gchar name[16];
gint i;
structure = gst_structure_new ("application/x-gst-dvd",
"event", G_TYPE_STRING, "dvd-spu-clut-change", NULL);
/* Create a separate field for each value in the table. */
for (i = 0; i < 16; i++) {
g_snprintf (name, sizeof (name), "clut%02d", i);
gst_structure_set (structure, name, G_TYPE_INT, (int) clut[i], NULL);
}
/* Create the DVD event and put the structure into it. */
return gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, structure);
}
static gint64
gst_dvd_read_src_convert_timecode (dvd_time_t * time)
{
gint64 ret_time;
const gint64 one_hour = 3600 * GST_SECOND;
const gint64 one_min = 60 * GST_SECOND;
g_return_val_if_fail ((time->hour >> 4) < 0xa
&& (time->hour & 0xf) < 0xa, -1);
g_return_val_if_fail ((time->minute >> 4) < 0x7
&& (time->minute & 0xf) < 0xa, -1);
g_return_val_if_fail ((time->second >> 4) < 0x7
&& (time->second & 0xf) < 0xa, -1);
ret_time = ((time->hour >> 4) * 10 + (time->hour & 0xf)) * one_hour;
ret_time += ((time->minute >> 4) * 10 + (time->minute & 0xf)) * one_min;
ret_time += ((time->second >> 4) * 10 + (time->second & 0xf)) * GST_SECOND;
return ret_time;
}
static gboolean
gst_dvd_read_src_do_duration_query (GstDvdReadSrc * src, GstQuery * query)
{
GstFormat format;
gint64 val;
gst_query_parse_duration (query, &format, NULL);
switch (format) {
case GST_FORMAT_TIME:{
if (src->cur_pgc == NULL)
return FALSE;
val = gst_dvd_read_src_convert_timecode (&src->cur_pgc->playback_time);
if (val < 0)
return FALSE;
break;
}
case GST_FORMAT_BYTES:{
if (!gst_dvd_read_src_get_size (src, &val))
return FALSE;
break;
}
default:{
if (format == sector_format) {
val = DVDFileSize (src->dvd_title);
} else if (format == title_format) {
val = src->tt_srpt->nr_of_srpts;
} else if (format == chapter_format) {
val = src->num_chapters;
} else if (format == angle_format) {
val = src->tt_srpt->title[src->title].nr_of_angles;
} else {
GST_DEBUG_OBJECT (src, "Don't know how to handle format %d (%s)",
format, gst_format_get_name (format));
return FALSE;
}
break;
}
}
GST_LOG_OBJECT (src, "duration = %" G_GINT64_FORMAT " %s", val,
gst_format_get_name (format));
gst_query_set_duration (query, format, val);
return TRUE;
}
static gboolean
gst_dvd_read_src_do_position_query (GstDvdReadSrc * src, GstQuery * query)
{
GstFormat format;
gint64 val;
gst_query_parse_position (query, &format, NULL);
switch (format) {
case GST_FORMAT_BYTES:{
val = (gint64) src->cur_pack * DVD_VIDEO_LB_LEN;
break;
}
default:{
if (format == sector_format) {
val = src->cur_pack;
} else if (format == title_format) {
val = src->title;
} else if (format == chapter_format) {
val = src->chapter;
} else if (format == angle_format) {
val = src->angle;
} else {
GST_DEBUG_OBJECT (src, "Don't know how to handle format %d (%s)",
format, gst_format_get_name (format));
return FALSE;
}
break;
}
}
GST_LOG_OBJECT (src, "position = %" G_GINT64_FORMAT " %s", val,
gst_format_get_name (format));
gst_query_set_position (query, format, val);
return TRUE;
}
static gboolean
gst_dvd_read_src_do_convert_query (GstDvdReadSrc * src, GstQuery * query)
{
GstFormat src_format, dest_format;
gboolean ret = FALSE;
gint64 src_val, dest_val = -1;
gst_query_parse_convert (query, &src_format, &src_val, &dest_format, NULL);
if (src_format == dest_format) {
dest_val = src_val;
ret = TRUE;
goto done;
}
/* Formats to consider: TIME, DEFAULT, BYTES, title, chapter, sector.
* Note: title and chapter are counted as starting from 0 here, just like
* in the context of seek events. Another note: DEFAULT format is undefined */
if (src_format == GST_FORMAT_BYTES) {
src_format = sector_format;
src_val /= DVD_VIDEO_LB_LEN;
}
if (src_format == sector_format) {
/* SECTOR => xyz */
if (dest_format == GST_FORMAT_TIME && src_val < G_MAXUINT) {
dest_val = gst_dvd_read_src_get_time_for_sector (src, (guint) src_val);
ret = (dest_val >= 0);
} else if (dest_format == GST_FORMAT_BYTES) {
dest_val = src_val * DVD_VIDEO_LB_LEN;
ret = TRUE;
} else {
ret = FALSE;
}
} else if (src_format == title_format) {
/* TITLE => xyz */
if (dest_format == GST_FORMAT_TIME) {
/* not really true, but we use this to trick the base source into
* handling seeks in title-format for us (the source won't know that
* we changed the title in this case) (changing titles should really
* be done with an interface rather than a seek, but for now we're
* stuck with this mechanism. Fix in 0.11) */
dest_val = (GstClockTime) 0;
ret = TRUE;
} else {
ret = FALSE;
}
} else if (src_format == chapter_format) {
/* CHAPTER => xyz */
if (dest_format == GST_FORMAT_TIME) {
if (src->num_chapters >= 0 && src_val < src->num_chapters) {
dest_val = src->chapter_starts[src_val];
ret = TRUE;
}
} else if (dest_format == sector_format) {
} else {
ret = FALSE;
}
} else if (src_format == GST_FORMAT_TIME) {
/* TIME => xyz */
if (dest_format == sector_format || dest_format == GST_FORMAT_BYTES) {
dest_val = gst_dvd_read_src_get_sector_from_time (src, src_val);
ret = (dest_val >= 0);
if (dest_format == GST_FORMAT_BYTES)
dest_val *= DVD_VIDEO_LB_LEN;
} else if (dest_format == chapter_format) {
if (src->chapter_starts != NULL) {
gint i;
for (i = src->num_chapters - 1; i >= 0; --i) {
if (src->chapter_starts && src->chapter_starts[i] >= src_val) {
dest_val = i;
ret = TRUE;
break;
}
}
} else {
ret = FALSE;
}
} else {
ret = FALSE;
}
} else {
ret = FALSE;
}
done:
if (ret) {
gst_query_set_convert (query, src_format, src_val, dest_format, dest_val);
}
return ret;
}
static gboolean
gst_dvd_read_src_src_query (GstBaseSrc * basesrc, GstQuery * query)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (basesrc);
gboolean res = TRUE;
GST_LOG_OBJECT (src, "handling %s query", GST_QUERY_TYPE_NAME (query));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_DURATION:
GST_OBJECT_LOCK (src);
if (GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_FLAG_STARTED)) {
res = gst_dvd_read_src_do_duration_query (src, query);
} else {
GST_DEBUG_OBJECT (src, "query failed: not started");
res = FALSE;
}
GST_OBJECT_UNLOCK (src);
break;
case GST_QUERY_POSITION:
GST_OBJECT_LOCK (src);
if (GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_FLAG_STARTED)) {
res = gst_dvd_read_src_do_position_query (src, query);
} else {
GST_DEBUG_OBJECT (src, "query failed: not started");
res = FALSE;
}
GST_OBJECT_UNLOCK (src);
break;
case GST_QUERY_CONVERT:
GST_OBJECT_LOCK (src);
if (GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_FLAG_STARTED)) {
res = gst_dvd_read_src_do_convert_query (src, query);
} else {
GST_DEBUG_OBJECT (src, "query failed: not started");
res = FALSE;
}
GST_OBJECT_UNLOCK (src);
break;
default:
res = GST_BASE_SRC_CLASS (parent_class)->query (basesrc, query);
break;
}
return res;
}
static gboolean
gst_dvd_read_src_goto_sector (GstDvdReadSrc * src, int angle)
{
gint seek_to = src->cur_pack;
gint chapter, next, cur, i;
/* retrieve position */
src->cur_pack = 0;
GST_DEBUG_OBJECT (src, "Goto sector %d, angle %d, within %d chapters",
seek_to, angle, src->num_chapters);
for (i = 0; i < src->num_chapters; i++) {
gint c1, c2;
cur_title_get_chapter_bounds (src, i, &c1, &c2);
GST_DEBUG_OBJECT (src, " Looking in chapter %d, bounds: %d %d", i, c1, c2);
for (next = cur = c1; cur < c2;) {
gint first = src->cur_pgc->cell_playback[cur].first_sector;
gint last = src->cur_pgc->cell_playback[cur].last_sector;
GST_DEBUG_OBJECT (src, "Cell %d sector bounds: %d %d", cur, first, last);
cur = next;
if (src->cur_pgc->cell_playback[cur].block_type == BLOCK_TYPE_ANGLE_BLOCK)
cur += angle;
next = gst_dvd_read_src_get_next_cell (src, src->cur_pgc, cur);
/* seeking to 0 should end up at first chapter in any case */
if ((seek_to >= first && seek_to <= last) || (seek_to == 0 && i == 0)) {
GST_DEBUG_OBJECT (src, "Seek target found in chapter %d", i);
chapter = i;
goto done;
}
}
}
GST_DEBUG_OBJECT (src, "Seek to sector %u failed", seek_to);
return FALSE;
done:
{
/* so chapter $chapter and cell $cur contain our sector
* of interest. Let's go there! */
GST_INFO_OBJECT (src, "Seek succeeded, going to chapter %u, cell %u",
chapter + 1, cur);
gst_dvd_read_src_goto_chapter (src, chapter);
src->cur_cell = cur;
src->next_cell = next;
src->new_cell = FALSE;
src->cur_pack = seek_to;
return TRUE;
}
}
/*** URI interface ***/
static GstURIType
gst_dvd_read_src_uri_get_type (GType type)
{
return GST_URI_SRC;
}
static const gchar *const *
gst_dvd_read_src_uri_get_protocols (GType type)
{
static const gchar *protocols[] = { "dvd", NULL };
return protocols;
}
static gchar *
gst_dvd_read_src_uri_get_uri (GstURIHandler * handler)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (handler);
gchar *uri;
GST_OBJECT_LOCK (src);
uri = g_strdup_printf ("dvd://%d,%d,%d", src->uri_title, src->uri_chapter,
src->uri_angle);
GST_OBJECT_UNLOCK (src);
return uri;
}
static gboolean
gst_dvd_read_src_uri_set_uri (GstURIHandler * handler, const gchar * uri,
GError ** error)
{
GstDvdReadSrc *src = GST_DVD_READ_SRC (handler);
/* parse out the new t/c/a and seek to them */
{
gchar *location = NULL;
gchar **strs;
gchar **strcur;
gint pos = 0;
location = gst_uri_get_location (uri);
GST_OBJECT_LOCK (src);
src->uri_title = 1;
src->uri_chapter = 1;
src->uri_angle = 1;
if (!location)
goto empty_location;
strcur = strs = g_strsplit (location, ",", 0);
while (strcur && *strcur) {
gint val;
if (!sscanf (*strcur, "%d", &val))
break;
if (val <= 0) {
g_warning ("Invalid value %d in URI '%s'. Must be 1 or greater",
val, location);
break;
}
switch (pos) {
case 0:
src->uri_title = val;
break;
case 1:
src->uri_chapter = val;
break;
case 2:
src->uri_angle = val;
break;
}
strcur++;
pos++;
}
if (pos > 0 && GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_FLAG_STARTED)) {
src->title = src->uri_title - 1;
src->chapter = src->uri_chapter - 1;
src->angle = src->uri_angle - 1;
src->new_seek = TRUE;
}
g_strfreev (strs);
g_free (location);
empty_location:
GST_OBJECT_UNLOCK (src);
}
return TRUE;
}
static void
gst_dvd_read_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_dvd_read_src_uri_get_type;
iface->get_protocols = gst_dvd_read_src_uri_get_protocols;
iface->get_uri = gst_dvd_read_src_uri_get_uri;
iface->set_uri = gst_dvd_read_src_uri_set_uri;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gstgst_dvd_read_src_debug, "dvdreadsrc", 0,
"DVD reader element based on dvdreadsrc");
#ifdef ENABLE_NLS
GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
LOCALEDIR);
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
#endif /* ENABLE_NLS */
if (!gst_element_register (plugin, "dvdreadsrc", GST_RANK_NONE,
GST_TYPE_DVD_READ_SRC)) {
return FALSE;
}
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
dvdread,
"Access a DVD with dvdread",
plugin_init, VERSION, "GPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
Reference in a new issue View git blame Copy permalink