bluray.c 8.51 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
/*****************************************************************************
 * bluray.c: Blu-ray disc support plugin
 *****************************************************************************
 * Copyright (C) 2010 VideoLAN, VLC authors and libbluray AUTHORS
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#ifdef HAVE_SYS_STAT_H
#   include <sys/stat.h>
#endif

#include <assert.h>
#include <limits.h>

#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_access.h>
#include <vlc_messages.h>

#include <libbluray/bluray.h>

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
#define CACHING_TEXT N_("Caching value in ms")
#define CACHING_LONGTEXT N_( "Caching value for BDs. This "\
                             "value should be set in milliseconds." )

/* Callbacks */
static int  blurayOpen ( vlc_object_t * );
static void blurayClose( vlc_object_t * );

vlc_module_begin ()
    set_shortname( N_("BluRay") )
    set_description( N_("Blu-Ray Disc support (libbluray)") )

    set_category( CAT_INPUT )
    set_subcategory( SUBCAT_INPUT_ACCESS )
    set_capability( "access", 60 )

    add_integer( "bluray-caching", 1000, NULL,
        CACHING_TEXT, CACHING_LONGTEXT, true )

    add_shortcut( "bluray" )
    add_shortcut( "file" )

    set_callbacks( blurayOpen, blurayClose )
vlc_module_end ()

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/

struct access_sys_t
{
    BLURAY *bluray; /* */
    int i_bd_delay;
};

static ssize_t blurayRead   (access_t *, uint8_t *, size_t);
static int     bluraySeek   (access_t *, uint64_t);
static int     blurayControl(access_t *, int, va_list);
static int     bluraySetTitle(access_t *p_access, int i_tile);

/*****************************************************************************
 * blurayOpen: module init function
 *****************************************************************************/
static int blurayOpen( vlc_object_t *object )
{
    access_t *p_access = (access_t*)object;

    access_sys_t *p_sys;
    char *pos_title;
91
    int i_title = -1;
92
93
    char bd_path[PATH_MAX];

94
95
    if( strcmp( p_access->psz_access, "bluray" ) ) {
        // TODO BDMV support, once we figure out what to do in libbluray
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
        return VLC_EGENERIC;
    }

    /* init access fields */
    access_InitFields(p_access);

    /* register callback function for communication */
    ACCESS_SET_CALLBACKS(blurayRead, NULL, blurayControl, bluraySeek);

    p_access->p_sys = p_sys = malloc(sizeof(access_sys_t));
    if (unlikely(!p_sys)) {
        return VLC_ENOMEM;
    }

    /* store current bd_path */
    strncpy(bd_path, p_access->psz_location, sizeof(bd_path));
    bd_path[PATH_MAX - 1] = '\0';

    if ( (pos_title = strrchr(bd_path, ':')) ) {
        /* found character ':' for title information */
        *(pos_title++) = '\0';
        i_title = atoi(pos_title);
    }

    p_sys->bluray = bd_open(bd_path, NULL);
    if ( !p_sys->bluray ) {
        free(p_sys);
        return VLC_EGENERIC;
    }

    /* set start title number */
    if ( bluraySetTitle(p_access, i_title) != VLC_SUCCESS ) {
        blurayClose(object);
        return VLC_EGENERIC;
    }

    p_sys->i_bd_delay = var_InheritInteger(p_access, "bluray-caching");

    return VLC_SUCCESS;
}


/*****************************************************************************
 * blurayClose: module destroy function
 *****************************************************************************/
static void blurayClose( vlc_object_t *object )
{
    access_t *p_access = (access_t*)object;
    access_sys_t *p_sys = p_access->p_sys;

    /* bd_close( NULL ) can crash */
    assert(p_sys->bluray);
    bd_close(p_sys->bluray);
    free(p_sys);
}


/*****************************************************************************
 * bluraySetTitle: select new BD title
 *****************************************************************************/
static int bluraySetTitle(access_t *p_access, int i_title)
{
    access_sys_t *p_sys = p_access->p_sys;

160
161
162
163
164
165
166
167
168
169
170
171
172
173
    unsigned int i_nb_titles = bd_get_titles(p_sys->bluray, TITLES_RELEVANT);

    /* Looking for the main title, ie the longest duration */
    if (i_title == -1) {
        uint64_t duration=0;
        for (unsigned int i = 0; i < i_nb_titles; i++) {
            BLURAY_TITLE_INFO *info = bd_get_title_info(p_sys->bluray, i);
            if (info->duration > duration) {
                i_title = i;
                duration = info->duration;
            }
        }
    }

174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
    /* Select Blu-Ray title */
    if ( bd_select_title(p_access->p_sys->bluray, i_title) == 0 ) {
        msg_Err( p_access, "cannot select bd title '%d'", p_access->info.i_title);
        return VLC_EGENERIC;
    }

    /* read title length and init some values */
    p_access->info.i_title = i_title;
    p_access->info.i_size  = bd_get_title_size(p_sys->bluray);
    p_access->info.i_pos   = 0;
    p_access->info.b_eof   = false;
    p_access->info.i_seekpoint = 0;

    return VLC_SUCCESS;
}


/*****************************************************************************
 * blurayControl: handle the controls
 *****************************************************************************/
static int blurayControl(access_t *p_access, int query, va_list args)
{
    access_sys_t *p_sys = p_access->p_sys;
    bool     *pb_bool;
    int64_t  *pi_64;

    switch (query) {
        case ACCESS_CAN_SEEK:
        case ACCESS_CAN_FASTSEEK:
        case ACCESS_CAN_PAUSE:
        case ACCESS_CAN_CONTROL_PACE:
             pb_bool = (bool*)va_arg( args, bool * );
             *pb_bool = true;
             break;

        case ACCESS_GET_PTS_DELAY:
            pi_64 = (int64_t*)va_arg( args, int64_t * );
            *pi_64 = p_sys->i_bd_delay;
            break;

        case ACCESS_SET_PAUSE_STATE:
            /* Nothing to do */
            break;

        case ACCESS_SET_TITLE:
        {
            int i_title = (int)va_arg( args, int );
            if( bluraySetTitle( p_access, i_title ) != VLC_SUCCESS )
                return VLC_EGENERIC;
            break;
        }
        case ACCESS_SET_SEEKPOINT:
        {
            int i_chapter = (int)va_arg( args, int );
            bd_seek_chapter( p_sys->bluray, i_chapter );
            break;
        }
        case ACCESS_GET_META:
        case ACCESS_GET_TITLE_INFO:
        case ACCESS_SET_PRIVATE_ID_STATE:
        case ACCESS_GET_CONTENT_TYPE:
            return VLC_EGENERIC;

        default:
            msg_Warn( p_access, "unimplemented query (%d) in control", query );
            return VLC_EGENERIC;
    }

    return VLC_SUCCESS;
}


/*****************************************************************************
 * bluraySeek: seek to the given position
 *****************************************************************************/
static int bluraySeek(access_t *p_access, uint64_t position)
{
    access_sys_t *p_sys = p_access->p_sys;

    p_access->info.i_pos = bd_seek(p_sys->bluray, position);
    p_access->info.b_eof = false;

    return VLC_SUCCESS;
}


/*****************************************************************************
 * blurayRead: read BD data into buffer
 *****************************************************************************/
static ssize_t blurayRead(access_t *p_access, uint8_t *data, size_t size)
{
    access_sys_t *p_sys = p_access->p_sys;
    int nread;

    if (p_access->info.b_eof) {
        return 0;
    }

    /* read data into buffer with given length */
    nread = bd_read(p_sys->bluray, data, size);

    if( nread == 0 ) {
        p_access->info.b_eof = true;
    }
    else if( nread > 0 ) {
        p_access->info.i_pos += nread;
    }

    return nread;
}