vlc_input.h 11.3 KB
Newer Older
Laurent Aimar's avatar
Laurent Aimar committed
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
91
92
93
94
95
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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
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
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
/*****************************************************************************
 * vlc_input.h:
 *****************************************************************************
 * Copyright (C) 1999-2004 VideoLAN
 * $Id: input_ext-intf.h 7954 2004-06-07 22:19:12Z fenrir $
 *
 * Authors: Christophe Massiot <massiot@via.ecp.fr>
 *          Laurent Aimar <fenrir@via.ecp.fr>
 *
 * 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.
 *****************************************************************************/

/* __ is need because conflict with <vlc/input.h> */
#ifndef _VLC__INPUT_H
#define _VLC__INPUT_H 1

/*****************************************************************************
 * input_item_t: Describes an input and is used to spawn input_thread_t objects.
 *****************************************************************************/
struct info_t
{
    char *psz_name;            /**< Name of this info */
    char *psz_value;           /**< Value of the info */
};

struct info_category_t
{
    char   *psz_name;      /**< Name of this category */
    int    i_infos;        /**< Number of infos in the category */
    struct info_t **pp_infos;     /**< Pointer to an array of infos */
};

struct input_item_t
{
    char       *psz_name;            /**< text describing this item */
    char       *psz_uri;             /**< mrl of this item */

    int        i_options;            /**< Number of input options */
    char       **ppsz_options;       /**< Array of input options */

    mtime_t    i_duration;           /**< A hint about the duration of this
                                      * item, in milliseconds*/

    int        i_categories;         /**< Number of info categories */
    info_category_t **pp_categories; /**< Pointer to the first info category */

    vlc_mutex_t lock;                /**< Item cannot be changed without this lock */
};


/*****************************************************************************
 * Seek point: (generalisation of chapters)
 *****************************************************************************/
struct seekpoint_t
{
    int64_t i_byte_offset;
    int64_t i_time_offset;
    char    *psz_name;
};

static inline seekpoint_t *vlc_seekpoint_New( void )
{
    seekpoint_t *point = (seekpoint_t*)malloc( sizeof( seekpoint_t ) );
    point->i_byte_offset =
    point->i_time_offset = 0;
    point->psz_name = NULL;
    return point;
}

static inline void vlc_seekpoint_Delete( seekpoint_t *point )
{
    if( !point ) return;
    if( point->psz_name ) free( point->psz_name );
    free( point );
}

static inline seekpoint_t *vlc_seekpoint_Duplicate( seekpoint_t *src )
{
    seekpoint_t *point = vlc_seekpoint_New();
    if( src->psz_name ) point->psz_name = strdup( src->psz_name );
    point->i_time_offset = src->i_time_offset;
    point->i_byte_offset = src->i_byte_offset;
    return point;
}

/*****************************************************************************
 * Title:
 *****************************************************************************/
typedef struct
{
    char        *psz_name;

    vlc_bool_t  b_menu;      /* Is it a menu or a normal entry */

    int64_t     i_length;   /* Length(microsecond) if known, else 0 */
    int64_t     i_size;     /* Size (bytes) if known, else 0 */

    /* Title seekpoint */
    int         i_seekpoint;
    seekpoint_t **seekpoint;

} input_title_t;

static inline input_title_t *vlc_input_title_New( )
{
    input_title_t *t = (input_title_t*)malloc( sizeof( input_title_t ) );

    t->psz_name = NULL;
    t->b_menu = VLC_FALSE;
    t->i_length = 0;
    t->i_size   = 0;
    t->i_seekpoint = 0;
    t->seekpoint = NULL;

    return t;
}
static inline void vlc_input_title_Delete( input_title_t *t )
{
    int i;
    if( t == NULL )
        return;

    if( t->psz_name ) free( t->psz_name );
    for( i = 0; i < t->i_seekpoint; i++ )
    {
        if( t->seekpoint[i]->psz_name ) free( t->seekpoint[i]->psz_name );
        free( t->seekpoint[i] );
    }
    if( t->seekpoint ) free( t->seekpoint );
    free( t );
}

static inline input_title_t *vlc_input_title_Duplicate( input_title_t *t )
{
    input_title_t *dup = vlc_input_title_New( );
    int i;

    if( t->psz_name ) dup->psz_name = strdup( t->psz_name );
    dup->b_menu      = t->b_menu;
    dup->i_length    = t->i_length;
    dup->i_size      = t->i_size;
    dup->i_seekpoint = t->i_seekpoint;
    if( t->i_seekpoint > 0 )
    {
        dup->seekpoint = (seekpoint_t**)calloc( t->i_seekpoint,
                                                sizeof(seekpoint_t*) );

        for( i = 0; i < t->i_seekpoint; i++ )
        {
            dup->seekpoint[i] = vlc_seekpoint_Duplicate( t->seekpoint[i] );
        }
    }

    return dup;
}


/*****************************************************************************
 * input defines/constants.
 *****************************************************************************/

/* "state" value */
enum input_state_e
{
    INIT_S,
    PLAYING_S,
    PAUSE_S,
    END_S,
};

/* "rate" default, min/max */
#define INPUT_RATE_DEFAULT  1000
#define INPUT_RATE_MIN       125            /* Up to 8/1 */
#define INPUT_RATE_MAX      8000            /* Up to 1/8 */

/* input_source_t: gathers all informations per input source */
typedef struct
{
    /* Input item description */
    input_item_t *p_item;

    /* Access/Stream/Demux plugins */
    access_t *p_access;
    stream_t *p_stream;
    demux_t  *p_demux;

    /* Title infos for that input */
    vlc_bool_t   b_title_demux; /* Titles/Seekpoints provided by demux */
    int          i_title;
    input_title_t **title;

    /* Properties */
    vlc_bool_t b_can_pace_control;
    vlc_bool_t b_can_pause;
    vlc_bool_t b_eof;   /* eof of demuxer */

    /* Clock average variation */
    int     i_cr_average;

} input_source_t;

/* i_update field of access_t/demux_t */
#define INPUT_UPDATE_NONE       0x0000
#define INPUT_UPDATE_SIZE       0x0001
#define INPUT_UPDATE_TITLE      0x0010
#define INPUT_UPDATE_SEEKPOINT  0x0020

/* Input control XXX: internal */
#define INPUT_CONTROL_FIFO_SIZE    100

/*****************************************************************************
 * input_thread_t
 *****************************************************************************
 * XXX: this strucrures is *PRIVATE* so nobody can touch it out of src/input.
 * I plan to move it to src/input/input_internal.h anyway
 *
 * XXX: look at src/input/input.c:input_CreateThread for accessible variables
 *      YOU CANNOT HAVE ACCESS TO THE CONTENT OF input_thread_t except
 *      p_input->input.p_item (and it's only temporary).
 * XXX: move the docs somewhere (better than src/input )
 *****************************************************************************/
struct input_thread_t
{
    VLC_COMMON_MEMBERS

     /* Global properties */
    vlc_bool_t  b_eof;
    vlc_bool_t  b_can_pace_control;
    vlc_bool_t  b_can_pause;

    /* Global state */
    int         i_state;
    int         i_rate;

    /* */
    int64_t     i_start;    /* :start-time,0 by default */
    int64_t     i_time;     /* Current time */
    int64_t     i_stop;     /* :stop-time, 0 if none */

    /* Title infos FIXME multi-input (not easy) ? */
    int          i_title;
    input_title_t **title;

    /* User bookmarks FIXME won't be easy with multiples input */
    int         i_bookmark;
    seekpoint_t **bookmark;

    /* Output */
    es_out_t    *p_es_out;
    sout_instance_t *p_sout;            /* XXX Move it to es_out ? */
    vlc_bool_t      b_out_pace_control; /*     idem ? */

    /* Internal caching common for all inputs */
    int64_t i_pts_delay;

    /* By input properties (will become an array with multi-input) */
    input_source_t input;

    /* Buffer of pending actions */
    vlc_mutex_t lock_control;
    int i_control;
    struct
    {
        /* XXX: val isn't duplicated so it won't works with string */
        int         i_type;
        vlc_value_t val;
    } control[INPUT_CONTROL_FIFO_SIZE];

    /* Will be removed quickly (once input_thread_t is opaque)*/
    input_thread_sys_t *p_sys;
};

/*****************************************************************************
 * Prototypes
 *****************************************************************************/
#define input_CreateThread(a,b) __input_CreateThread(VLC_OBJECT(a),b)
VLC_EXPORT( input_thread_t *, __input_CreateThread, ( vlc_object_t *, input_item_t * ) );
VLC_EXPORT( void,             input_StopThread,     ( input_thread_t * ) );
VLC_EXPORT( void,             input_DestroyThread,  ( input_thread_t * ) );

enum input_query_e
{
    /* input variable "position" */
    INPUT_GET_POSITION,         /* arg1= double *       res=    */
    INPUT_SET_POSITION,         /* arg1= double         res=can fail    */

    /* input variable "length" */
    INPUT_GET_LENGTH,           /* arg1= int64_t *      res=can fail    */

    /* input variable "time" */
    INPUT_GET_TIME,             /* arg1= int64_t *      res=    */
    INPUT_SET_TIME,             /* arg1= int64_t        res=can fail    */

    /* input variable "rate" (1 is DEFAULT_RATE) */
    INPUT_GET_RATE,             /* arg1= int *          res=    */
    INPUT_SET_RATE,             /* arg1= int            res=can fail    */

    /* input variable "state" */
    INPUT_GET_STATE,            /* arg1= int *          res=    */
    INPUT_SET_STATE,            /* arg1= int            res=can fail    */

314
315
316
317
318
319
320
321
322
    /* input variable "audio-delay" and "spu-delay" */
    INPUT_GET_AUDIO_DELAY,      /* arg1 = int* res=can fail */
    INPUT_SET_AUDIO_DELAY,      /* arg1 = int  res=can fail */
    INPUT_GET_SPU_DELAY,        /* arg1 = int* res=can fail */
    INPUT_SET_SPU_DELAY,        /* arg1 = int  res=can fail */

    /* Meta datas */
    INPUT_ADD_INFO,   /* arg1= char * arg2= char * arg3=...  res=can fail    */
    INPUT_GET_INFO,   /* arg1= char * arg2= char * arg3= char ** res=can fail*/
Laurent Aimar's avatar
Laurent Aimar committed
323

324
325
326
    INPUT_SET_NAME,   /* arg1= char * res=can fail    */

    /* XXX: all next query aren't working for now */
Laurent Aimar's avatar
Laurent Aimar committed
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
    /* bookmarks */
    INPUT_GET_BOOKMARKS,   /* arg1= seekpoint_t *** arg2= int * res=can fail */
    INPUT_CLEAR_BOOKMARKS, /* res=can fail */
    INPUT_ADD_BOOKMARK,    /* arg1= seekpoint_t *  res=can fail   */
    INPUT_CHANGE_BOOKMARK, /* arg1= seekpoint_t * arg2= int * res=can fail   */
    INPUT_DEL_BOOKMARK,    /* arg1= seekpoint_t *  res=can fail   */
    INPUT_SET_BOOKMARK,    /* arg1= int  res=can fail    */
};

VLC_EXPORT( int, input_vaControl,( input_thread_t *, int i_query, va_list  ) );
VLC_EXPORT( int, input_Control,  ( input_thread_t *, int i_query, ...  ) );


VLC_EXPORT( decoder_t *, input_DecoderNew, ( input_thread_t *, es_format_t *, vlc_bool_t b_force_decoder ) );
VLC_EXPORT( void, input_DecoderDelete, ( decoder_t * ) );
VLC_EXPORT( void, input_DecoderDecode,( decoder_t *, block_t * ) );

#endif