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/*
* Copyright (C) 2002 Samuel Hocevar <sam@zoy.org>,
* Håkan Hjort <d95hjort@dtek.chalmers.se>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include "dvd_reader.h"
#include "dvd_input.h"
#include "dvdcss.h"
dvdcss_handle (*DVDcss_open) (const char *);
int (*DVDcss_close) (dvdcss_handle);
int (*DVDcss_seek) (dvdcss_handle, int, int);
int (*DVDcss_title) (dvdcss_handle, int);
int (*DVDcss_read) (dvdcss_handle, void *, int, int);
char * (*DVDcss_error) (dvdcss_handle);
/* The DVDinput handle, add stuff here for new input methods. */
struct dvd_input_s {
/* libdvdcss handle */
dvdcss_handle dvdcss;
/* dummy file input */
int fd;
};
/**
* initialize and open a DVD device or file.
*/
static dvd_input_t css_open(const char *target)
{
dvd_input_t dev;
/* Allocate the handle structure */
dev = (dvd_input_t) malloc(sizeof(struct dvd_input_s));
if(dev == NULL) {
fprintf(stderr, "libdvdread: Could not allocate memory.\n");
return NULL;
}
/* Really open it with libdvdcss */
dev->dvdcss = DVDcss_open(target);
if(dev->dvdcss == 0) {
fprintf(stderr, "libdvdread: Could not open device with libdvdcss.\n");
free(dev);
return NULL;
}
return dev;
}
/**
* return the last error message
*/
static char *css_error(dvd_input_t dev)
{
return DVDcss_error(dev->dvdcss);
}
/**
* seek into the device.
*/
static int css_seek(dvd_input_t dev, int blocks, int flags)
{
return DVDcss_seek(dev->dvdcss, blocks, flags);
}
/**
* set the block for the begining of a new title (key).
*/
static int css_title(dvd_input_t dev, int block)
{
return DVDcss_title(dev->dvdcss, block);
}
/**
* read data from the device.
*/
static int css_read(dvd_input_t dev, void *buffer, int blocks, int flags)
{
return DVDcss_read(dev->dvdcss, buffer, blocks, flags);
}
/**
* close the DVD device and clean up the library.
*/
static int css_close(dvd_input_t dev)
{
int ret;
ret = DVDcss_close(dev->dvdcss);
if(ret < 0)
return ret;
free(dev);
return 0;
}
/**
* Setup read functions with either libdvdcss or minimal DVD access.
*/
int DVDInputSetup(void)
{
DVDcss_open = dvdcss_open;
DVDcss_close = dvdcss_close;
DVDcss_title = dvdcss_title;
DVDcss_seek = dvdcss_seek;
DVDcss_read = dvdcss_read;
DVDcss_error = dvdcss_error;
/*
char *psz_method = getenv( "DVDCSS_METHOD" );
char *psz_verbose = getenv( "DVDCSS_VERBOSE" );
fprintf(stderr, "DVDCSS_METHOD %s\n", psz_method);
fprintf(stderr, "DVDCSS_VERBOSE %s\n", psz_verbose);
*/
// fprintf(stderr, "libdvdread: Using libdvdcss version %s for DVD access\n",
// *dvdcss_version);
/* libdvdcss wraper functions */
DVDinput_open = css_open;
DVDinput_close = css_close;
DVDinput_seek = css_seek;
DVDinput_title = css_title;
DVDinput_read = css_read;
DVDinput_error = css_error;
return 1;
}
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