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gstreamer/ext/dvdread/dvdsrc.c
Wim Taymans 45dbf76d1b Changed to the new props API 
Original commit message from CVS:
Changed to the new props API
Other small tuff.
2002-03-30 17:06:26 +00:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* Copyright (C) 2001 Billy Biggs <vektor@dumbterm.net>.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <linux/cdrom.h>
#include <assert.h>
#include <dvdsrc.h>
#include "config.h"
#include <dvdread/dvd_reader.h>
#include <dvdread/ifo_types.h>
#include <dvdread/ifo_read.h>
#include <dvdread/nav_read.h>
#include <dvdread/nav_print.h>
struct _DVDSrcPrivate {
GstElement element;
/* pads */
GstPad *srcpad;
/* location */
gchar *location;
gboolean new_seek;
int title, chapter, angle;
int pgc_id, start_cell, cur_cell, cur_pack;
int ttn, pgn, next_cell;
dvd_reader_t *dvd;
dvd_file_t *dvd_title;
ifo_handle_t *vmg_file;
tt_srpt_t *tt_srpt;
ifo_handle_t *vts_file;
vts_ptt_srpt_t *vts_ptt_srpt;
pgc_t *cur_pgc;
};
GstElementDetails dvdsrc_details = {
"DVD Source",
"Source/File/DVD",
"Asynchronous read from encrypted DVD disk",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 2001",
};
/* DVDSrc signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_LOCATION,
ARG_TITLE,
ARG_CHAPTER,
ARG_ANGLE
};
static void dvdsrc_class_init (DVDSrcClass *klass);
static void dvdsrc_init (DVDSrc *dvdsrc);
static void dvdsrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void dvdsrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
/*static GstBuffer * dvdsrc_get (GstPad *pad); */
static void dvdsrc_loop (GstElement *element);
/*static GstBuffer * dvdsrc_get_region (GstPad *pad,gulong offset,gulong size); */
static GstElementStateReturn dvdsrc_change_state (GstElement *element);
static GstElementClass *parent_class = NULL;
/*static guint dvdsrc_signals[LAST_SIGNAL] = { 0 }; */
GType
dvdsrc_get_type (void)
{
static GType dvdsrc_type = 0;
if (!dvdsrc_type) {
static const GTypeInfo dvdsrc_info = {
sizeof(DVDSrcClass), NULL,
NULL,
(GClassInitFunc)dvdsrc_class_init,
NULL,
NULL,
sizeof(DVDSrc),
0,
(GInstanceInitFunc)dvdsrc_init,
};
dvdsrc_type = g_type_register_static (GST_TYPE_ELEMENT, "DVDSrc", &dvdsrc_info, 0);
}
return dvdsrc_type;
}
static void
dvdsrc_class_init (DVDSrcClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_LOCATION,
g_param_spec_string("location","location","location",
NULL, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TITLE,
g_param_spec_int("title","title","title",
0,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHAPTER,
g_param_spec_int("chapter","chapter","chapter",
0,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ANGLE,
g_param_spec_int("angle","angle","angle",
0,G_MAXINT,0,G_PARAM_READWRITE));
gobject_class->set_property = GST_DEBUG_FUNCPTR(dvdsrc_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR(dvdsrc_get_property);
gstelement_class->change_state = dvdsrc_change_state;
}
static void
dvdsrc_init (DVDSrc *dvdsrc)
{
dvdsrc->priv = g_new(DVDSrcPrivate, 1);
dvdsrc->priv->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (dvdsrc), dvdsrc->priv->srcpad);
gst_element_set_loop_function (GST_ELEMENT(dvdsrc), GST_DEBUG_FUNCPTR(dvdsrc_loop));
dvdsrc->priv->location = "/dev/dvd";
dvdsrc->priv->new_seek = FALSE;
dvdsrc->priv->title = 1;
dvdsrc->priv->chapter = 1;
dvdsrc->priv->angle = 1;
}
static void
dvdsrc_destory (DVDSrc *dvdsrc)
{
/* FIXME */
g_print("FIXME\n");
g_free(dvdsrc->priv);
}
static void
dvdsrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
DVDSrc *src;
DVDSrcPrivate *priv;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_DVDSRC (object));
src = DVDSRC (object);
priv = src->priv;
switch (prop_id) {
case ARG_LOCATION:
/* the element must be stopped in order to do this */
/*g_return_if_fail(!GST_FLAG_IS_SET(src,GST_STATE_RUNNING)); */
if (priv->location)
g_free (priv->location);
/* clear the filename if we get a NULL (is that possible?) */
if (g_value_get_string (value) == NULL)
priv->location = "/dev/dvd";
/* otherwise set the new filename */
else
priv->location = g_strdup (g_value_get_string (value));
break;
case ARG_TITLE:
priv->title = g_value_get_int (value) - 1;
priv->new_seek = TRUE;
break;
case ARG_CHAPTER:
priv->chapter = g_value_get_int (value) - 1;
priv->new_seek = TRUE;
break;
case ARG_ANGLE:
priv->angle = g_value_get_int (value) - 1;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
dvdsrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
DVDSrc *src;
DVDSrcPrivate *priv;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_DVDSRC (object));
src = DVDSRC (object);
priv = src->priv;
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, priv->location);
break;
case ARG_TITLE:
g_value_set_int (value, priv->title + 1);
break;
case ARG_CHAPTER:
g_value_set_int (value, priv->chapter + 1);
break;
case ARG_ANGLE:
g_value_set_int (value, priv->angle + 1);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* Returns true if the pack is a NAV pack. This check is clearly insufficient,
* and sometimes we incorrectly think that valid other packs are NAV packs. I
* need to make this stronger.
*/
static int
is_nav_pack( unsigned char *buffer )
{
return ( buffer[ 41 ] == 0xbf && buffer[ 1027 ] == 0xbf );
}
static int
_open(DVDSrcPrivate *priv, const gchar *location)
{
g_return_val_if_fail(priv != NULL, -1);
g_return_val_if_fail(location != NULL, -1);
/**
* Open the disc.
*/
priv->dvd = DVDOpen( location );
if( !priv->dvd ) {
fprintf( stderr, "Couldn't open DVD: %s\n", location );
return -1;
}
/**
* Load the video manager to find out the information about the titles on
* this disc.
*/
priv->vmg_file = ifoOpen( priv->dvd, 0 );
if( !priv->vmg_file ) {
fprintf( stderr, "Can't open VMG info.\n" );
DVDClose( priv->dvd );
return -1;
}
priv->tt_srpt = priv->vmg_file->tt_srpt;
return 0;
}
static int
_close(DVDSrcPrivate *priv)
{
ifoClose( priv->vts_file );
ifoClose( priv->vmg_file );
DVDCloseFile( priv->dvd_title );
DVDClose( priv->dvd );
return 0;
}
static int
_seek(DVDSrcPrivate *priv, int title, int chapter, int angle)
{
/**
* Make sure our title number is valid.
*/
fprintf( stderr, "There are %d titles on this DVD.\n",
priv->tt_srpt->nr_of_srpts );
if( title < 0 || title >= priv->tt_srpt->nr_of_srpts ) {
fprintf( stderr, "Invalid title %d.\n", title + 1 );
ifoClose( priv->vmg_file );
DVDClose( priv->dvd );
return -1;
}
/**
* Make sure the chapter number is valid for this title.
*/
fprintf( stderr, "There are %d chapters in this title.\n",
priv->tt_srpt->title[ title ].nr_of_ptts );
if( chapter < 0 || chapter >= priv->tt_srpt->title[ title ].nr_of_ptts ) {
fprintf( stderr, "Invalid chapter %d\n", chapter + 1 );
ifoClose( priv->vmg_file );
DVDClose( priv->dvd );
return -1;
}
/**
* Make sure the angle number is valid for this title.
*/
fprintf( stderr, "There are %d angles in this title.\n",
priv->tt_srpt->title[ title ].nr_of_angles );
if( angle < 0 || angle >= priv->tt_srpt->title[ title ].nr_of_angles ) {
fprintf( stderr, "Invalid angle %d\n", angle + 1 );
ifoClose( priv->vmg_file );
DVDClose( priv->dvd );
return -1;
}
/**
* Load the VTS information for the title set our title is in.
*/
priv->vts_file = ifoOpen( priv->dvd, priv->tt_srpt->title[ title ].title_set_nr );
if( !priv->vts_file ) {
fprintf( stderr, "Can't open the title %d info file.\n",
priv->tt_srpt->title[ title ].title_set_nr );
ifoClose( priv->vmg_file );
DVDClose( priv->dvd );
return -1;
}
/**
* Determine which program chain we want to watch. This is based on the
* chapter number.
*/
priv->ttn = priv->tt_srpt->title[ title ].vts_ttn;
priv->vts_ptt_srpt = priv->vts_file->vts_ptt_srpt;
priv->pgc_id = priv->vts_ptt_srpt->title[ priv->ttn - 1 ].ptt[ chapter ].pgcn;
priv->pgn = priv->vts_ptt_srpt->title[ priv->ttn - 1 ].ptt[ chapter ].pgn;
priv->cur_pgc = priv->vts_file->vts_pgcit->pgci_srp[ priv->pgc_id - 1 ].pgc;
priv->start_cell = priv->cur_pgc->program_map[ priv->pgn - 1 ] - 1;
/**
* We've got enough info, time to open the title set data.
*/
priv->dvd_title = DVDOpenFile( priv->dvd, priv->tt_srpt->title[ title ].title_set_nr,
DVD_READ_TITLE_VOBS );
if( !priv->dvd_title ) {
fprintf( stderr, "Can't open title VOBS (VTS_%02d_1.VOB).\n",
priv->tt_srpt->title[ title ].title_set_nr );
ifoClose( priv->vts_file );
ifoClose( priv->vmg_file );
DVDClose( priv->dvd );
return -1;
}
return 0;
}
static void
dvdsrc_loop (GstElement *element)
{
DVDSrc *dvdsrc;
DVDSrcPrivate *priv;
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_DVDSRC (element));
dvdsrc = DVDSRC (element);
priv = dvdsrc->priv;
g_return_if_fail (GST_FLAG_IS_SET (dvdsrc, DVDSRC_OPEN));
/**
* Playback by cell in this pgc, starting at the cell for our chapter.
*/
priv->next_cell = priv->start_cell;
for( priv->cur_cell = priv->start_cell; priv->next_cell < priv->cur_pgc->nr_of_cells; ) {
priv->cur_cell = priv->next_cell;
/* Check if we're entering an angle block. */
if( priv->cur_pgc->cell_playback[ priv->cur_cell ].block_type
== BLOCK_TYPE_ANGLE_BLOCK ) {
int i;
priv->cur_cell += priv->angle;
for( i = 0;; ++i ) {
if( priv->cur_pgc->cell_playback[ priv->cur_cell + i ].block_mode
== BLOCK_MODE_LAST_CELL ) {
priv->next_cell = priv->cur_cell + i + 1;
break;
}
}
} else {
priv->next_cell = priv->cur_cell + 1;
}
/**
* We loop until we're out of this cell.
*/
for( priv->cur_pack = priv->cur_pgc->cell_playback[ priv->cur_cell ].first_sector;
priv->cur_pack < priv->cur_pgc->cell_playback[ priv->cur_cell ].last_sector; ) {
dsi_t dsi_pack;
unsigned int next_vobu, next_ilvu_start, cur_output_size;
GstBuffer *buf;
unsigned char *data;
int len;
/* create the buffer */
/* FIXME: should eventually use a bufferpool for this */
buf = gst_buffer_new ();
g_return_if_fail (buf);
/* allocate the space for the buffer data */
data = g_malloc (1024 * DVD_VIDEO_LB_LEN);
GST_BUFFER_DATA (buf) = data;
g_return_if_fail (GST_BUFFER_DATA (buf) != NULL);
/**
* Read NAV packet.
*/
len = DVDReadBlocks( priv->dvd_title, priv->cur_pack, 1, data );
if( len == 0 ) {
fprintf( stderr, "Read failed for block %d\n", priv->cur_pack );
_close(priv);
gst_element_set_eos (GST_ELEMENT (dvdsrc));
return;
}
assert( is_nav_pack( data ) );
/**
* Parse the contained dsi packet.
*/
navRead_DSI( &dsi_pack, &(data[ DSI_START_BYTE ]) );
assert( priv->cur_pack == dsi_pack.dsi_gi.nv_pck_lbn );
/*navPrint_DSI(&dsi_pack); */
/**
* Determine where we go next. These values are the ones we mostly
* care about.
*/
next_ilvu_start = priv->cur_pack
+ dsi_pack.sml_agli.data[ priv->angle ].address;
cur_output_size = dsi_pack.dsi_gi.vobu_ea;
/**
* 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 = priv->cur_pack
+ ( dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
} else {
next_vobu = priv->cur_pack + cur_output_size + 1;
}
assert( cur_output_size < 1024 );
priv->cur_pack++;
/**
* Read in and output cursize packs.
*/
len = DVDReadBlocks( priv->dvd_title, priv->cur_pack,
cur_output_size, data );
if( len != cur_output_size ) {
fprintf( stderr, "Read failed for %d blocks at %d\n",
cur_output_size, priv->cur_pack );
_close(priv);
gst_element_set_eos (GST_ELEMENT (dvdsrc));
return;
}
GST_BUFFER_SIZE(buf) = cur_output_size * DVD_VIDEO_LB_LEN;
gst_pad_push(priv->srcpad, buf);
priv->cur_pack = next_vobu;
}
}
}
#if 0
static int
_read(DVDSrcPrivate *priv, int angle, int new_seek, GstBuffer *buf)
{
unsigned char *data;
data = GST_BUFFER_DATA(buf);
/**
* Playback by cell in this pgc, starting at the cell for our chapter.
*/
if (new_seek) {
priv->next_cell = priv->start_cell;
priv->cur_cell = priv->start_cell;
}
if (priv->next_cell < priv->cur_pgc->nr_of_cells) {
priv->cur_cell = priv->next_cell;
/* Check if we're entering an angle block. */
if( priv->cur_pgc->cell_playback[ priv->cur_cell ].block_type
== BLOCK_TYPE_ANGLE_BLOCK ) {
int i;
priv->cur_cell += angle;
for( i = 0;; ++i ) {
if( priv->cur_pgc->cell_playback[ priv->cur_cell + i ].block_mode
== BLOCK_MODE_LAST_CELL ) {
priv->next_cell = priv->cur_cell + i + 1;
break;
}
}
} else {
priv->next_cell = priv->cur_cell + 1;
}
/**
* We loop until we're out of this cell.
*/
if (priv->new_cell) {
priv->cur_pack = priv->cur_pgc->cell_playback[ priv->cur_cell ].first_sector;
priv->new_cell = FALSE;
}
if (priv->cur_pack < priv->cur_pgc->cell_playback[ priv->cur_cell ].last_sector; ) {
dsi_t dsi_pack;
unsigned int next_vobu, next_ilvu_start, cur_output_size;
int len;
/**
* Read NAV packet.
*/
len = DVDReadBlocks( priv->title, priv->cur_pack, 1, data );
if( len == 0 ) {
fprintf( stderr, "Read failed for block %d\n", priv->cur_pack );
_close(priv);
return -1;
}
assert( is_nav_pack( data ) );
/**
* Parse the contained dsi packet.
*/
navRead_DSI( &dsi_pack, &(data[ DSI_START_BYTE ]), sizeof(dsi_t) );
assert( priv->cur_pack == dsi_pack.dsi_gi.nv_pck_lbn );
/**
* Determine where we go next. These values are the ones we mostly
* care about.
*/
next_ilvu_start = priv->cur_pack
+ dsi_pack.sml_agli.data[ angle ].address;
cur_output_size = dsi_pack.dsi_gi.vobu_ea;
/**
* 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 = priv->cur_pack
+ ( dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
} else {
next_vobu = priv->cur_pack + cur_output_size + 1;
}
assert( cur_output_size < 1024 );
priv->cur_pack++;
/**
* Read in and output cursize packs.
*/
len = DVDReadBlocks( priv->title, priv->cur_pack,
cur_output_size, data );
if( len != cur_output_size ) {
fprintf( stderr, "Read failed for %d blocks at %d\n",
cur_output_size, priv->cur_pack );
_close(priv);
return -1;
}
GST_BUFFER_SIZE(buf) = cur_output_size * DVD_VIDEO_LB_LEN;
priv->cur_pack = next_vobu;
}
} else {
return -1;
}
return 0;
}
static GstBuffer *
dvdsrc_get (GstPad *pad)
{
DVDSrc *dvdsrc;
DVDSrcPrivate *priv;
GstBuffer *buf;
g_return_val_if_fail (pad != NULL, NULL);
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
dvdsrc = DVDSRC (gst_pad_get_parent (pad));
priv = dvdsrc->priv;
g_return_val_if_fail (GST_FLAG_IS_SET (dvdsrc, DVDSRC_OPEN),NULL);
/* create the buffer */
/* FIXME: should eventually use a bufferpool for this */
buf = gst_buffer_new ();
g_return_val_if_fail (buf, NULL);
/* allocate the space for the buffer data */
GST_BUFFER_DATA (buf) = g_malloc (1024 * DVD_VIDEO_LB_LEN);
g_return_val_if_fail (GST_BUFFER_DATA (buf) != NULL, NULL);
if (priv->new_seek) {
_seek(priv, priv->titleid, priv->chapid, priv->angle);
}
/* read it in from the file */
if (_read (priv, priv->angle, priv->new_seek, buf)) {
gst_element_signal_eos (GST_ELEMENT (dvdsrc));
return NULL;
}
if (priv->new_seek) {
priv->new_seek = FALSE;
}
return buf;
}
#endif
/* open the file, necessary to go to RUNNING state */
static gboolean
dvdsrc_open_file (DVDSrc *src)
{
g_return_val_if_fail (src != NULL, FALSE);
g_return_val_if_fail (GST_IS_DVDSRC(src), FALSE);
g_return_val_if_fail (!GST_FLAG_IS_SET (src, DVDSRC_OPEN), FALSE);
if (_open(src->priv, src->priv->location))
return FALSE;
if (_seek(src->priv,
src->priv->title,
src->priv->chapter,
src->priv->angle))
return FALSE;
GST_FLAG_SET (src, DVDSRC_OPEN);
return TRUE;
}
/* close the file */
static void
dvdsrc_close_file (DVDSrc *src)
{
g_return_if_fail (GST_FLAG_IS_SET (src, DVDSRC_OPEN));
_close(src->priv);
GST_FLAG_UNSET (src, DVDSRC_OPEN);
}
static GstElementStateReturn
dvdsrc_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_DVDSRC (element), GST_STATE_FAILURE);
GST_DEBUG (0,"gstdisksrc: state pending %d", GST_STATE_PENDING (element));
/* if going down into NULL state, close the file if it's open */
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, DVDSRC_OPEN))
dvdsrc_close_file (DVDSRC (element));
/* otherwise (READY or higher) we need to open the file */
} else {
if (!GST_FLAG_IS_SET (element, DVDSRC_OPEN)) {
if (!dvdsrc_open_file (DVDSRC (element)))
return GST_STATE_FAILURE;
}
}
/* if we haven't failed already, give the parent class a chance to ;-) */
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
/* create an elementfactory for the dvdsrc element */
factory = gst_elementfactory_new ("dvdsrc", GST_TYPE_DVDSRC,
&dvdsrc_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"dvdsrc",
plugin_init
};
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