1 /*****************************************************************************
2 * modules.h : Module management functions.
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: modules.h,v 1.25 2001/05/30 17:03:11 sam Exp $
7 * Authors: Samuel Hocevar <sam@zoy.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
25 #include <sys/types.h> /* off_t */
28 /*****************************************************************************
29 * module_bank_t, p_module_bank (global variable)
30 *****************************************************************************
31 * This global variable is accessed by any function using modules.
32 *****************************************************************************/
35 struct module_s * first; /* First module of the bank */
37 vlc_mutex_t lock; /* Global lock -- you can't imagine how awful it
38 is to design thread-safe linked lists. */
41 extern module_bank_t *p_module_bank;
43 /*****************************************************************************
45 *****************************************************************************/
47 /* Number of tries before we unload an unused module */
48 #define MODULE_HIDE_DELAY 100
50 /* The module handle type. */
52 typedef int module_handle_t;
54 typedef void * module_handle_t;
57 /*****************************************************************************
58 * Module capabilities.
59 *****************************************************************************/
61 #define MODULE_CAPABILITY_NULL 0 /* The Module can't do anything */
62 #define MODULE_CAPABILITY_INTF 1 << 0 /* Interface */
63 #define MODULE_CAPABILITY_ACCESS 1 << 1 /* Input */
64 #define MODULE_CAPABILITY_INPUT 1 << 2 /* Input */
65 #define MODULE_CAPABILITY_DECAPS 1 << 3 /* Decaps */
66 #define MODULE_CAPABILITY_ADEC 1 << 4 /* Audio decoder */
67 #define MODULE_CAPABILITY_VDEC 1 << 5 /* Video decoder */
68 #define MODULE_CAPABILITY_MOTION 1 << 6 /* Motion compensation */
69 #define MODULE_CAPABILITY_IDCT 1 << 7 /* IDCT transformation */
70 #define MODULE_CAPABILITY_AOUT 1 << 8 /* Audio output */
71 #define MODULE_CAPABILITY_VOUT 1 << 9 /* Video output */
72 #define MODULE_CAPABILITY_YUV 1 << 10 /* YUV colorspace conversion */
73 #define MODULE_CAPABILITY_IMDCT 1 << 11 /* IMDCT transformation */
74 #define MODULE_CAPABILITY_DOWNMIX 1 << 12 /* AC3 downmix */
82 /* FIXME: not yet used */
83 typedef struct probedata_s
91 /* FIXME: find a nicer way to do this. */
92 typedef struct function_list_s
94 int ( * pf_probe ) ( probedata_t * p_data );
98 /* Interface plugin */
101 int ( * pf_open ) ( struct intf_thread_s * );
102 void ( * pf_close )( struct intf_thread_s * );
103 void ( * pf_run ) ( struct intf_thread_s * );
109 void ( * pf_init ) ( struct input_thread_s * );
110 void ( * pf_open ) ( struct input_thread_s * );
111 void ( * pf_close )( struct input_thread_s * );
112 void ( * pf_end ) ( struct input_thread_s * );
114 int ( * pf_read ) ( struct input_thread_s *,
115 struct data_packet_s *
117 void ( * pf_demux )( struct input_thread_s *,
118 struct data_packet_s * );
120 struct data_packet_s * ( * pf_new_packet ) ( void *, size_t );
121 struct pes_packet_s * ( * pf_new_pes ) ( void * );
122 void ( * pf_delete_packet ) ( void *, struct data_packet_s * );
123 void ( * pf_delete_pes ) ( void *, struct pes_packet_s * );
126 int ( * pf_set_area ) ( struct input_thread_s *,
127 struct input_area_s * );
128 int ( * pf_rewind ) ( struct input_thread_s * );
129 void ( * pf_seek ) ( struct input_thread_s *, off_t );
132 /* Audio output plugin */
135 int ( * pf_open ) ( struct aout_thread_s * );
136 int ( * pf_setformat ) ( struct aout_thread_s * );
137 long ( * pf_getbufinfo ) ( struct aout_thread_s *, long );
138 void ( * pf_play ) ( struct aout_thread_s *, byte_t *, int );
139 void ( * pf_close ) ( struct aout_thread_s * );
142 /* Video output plugin */
145 int ( * pf_create ) ( struct vout_thread_s * );
146 int ( * pf_init ) ( struct vout_thread_s * );
147 void ( * pf_end ) ( struct vout_thread_s * );
148 void ( * pf_destroy ) ( struct vout_thread_s * );
149 int ( * pf_manage ) ( struct vout_thread_s * );
150 void ( * pf_display ) ( struct vout_thread_s * );
151 void ( * pf_setpalette ) ( struct vout_thread_s *, u16 *red,
152 u16 *green, u16 *blue, u16 *transp );
155 /* Motion compensation plugin */
158 #define motion_functions( yuv ) \
159 void ( * pf_field_field_##yuv ) ( struct macroblock_s * ); \
160 void ( * pf_field_16x8_##yuv ) ( struct macroblock_s * ); \
161 void ( * pf_field_dmv_##yuv ) ( struct macroblock_s * ); \
162 void ( * pf_frame_field_##yuv ) ( struct macroblock_s * ); \
163 void ( * pf_frame_frame_##yuv ) ( struct macroblock_s * ); \
164 void ( * pf_frame_dmv_##yuv ) ( struct macroblock_s * );
165 motion_functions( 420 )
166 motion_functions( 422 )
167 motion_functions( 444 )
168 #undef motion_functions
174 void ( * pf_idct_init ) ( struct vdec_thread_s * );
175 void ( * pf_sparse_idct ) ( struct vdec_thread_s *,
177 void ( * pf_idct ) ( struct vdec_thread_s *,
179 void ( * pf_norm_scan ) ( u8 ppi_scan[2][64] );
181 void ( * pf_decode_init ) ( struct vdec_thread_s * );
182 void ( * pf_decode_mb_c ) ( struct vdec_thread_s *,
183 struct macroblock_s * );
184 void ( * pf_decode_mb_bw ) ( struct vdec_thread_s *,
185 struct macroblock_s * );
188 /* YUV transformation plugin */
191 int ( * pf_init ) ( struct vout_thread_s * );
192 int ( * pf_reset ) ( struct vout_thread_s * );
193 void ( * pf_end ) ( struct vout_thread_s * );
199 void ( * pf_imdct_init ) ( struct imdct_s * );
200 void ( * pf_imdct_256 ) ( struct imdct_s *,
201 float data[], float delay[] );
202 void ( * pf_imdct_256_nol )( struct imdct_s *,
203 float data[], float delay[] );
204 void ( * pf_imdct_512 ) ( struct imdct_s *,
205 float data[], float delay[] );
206 void ( * pf_imdct_512_nol )( struct imdct_s *,
207 float data[], float delay[] );
208 // void ( * pf_fft_64p ) ( struct complex_s * );
212 /* AC3 downmix plugin */
215 void ( * pf_downmix_3f_2r_to_2ch ) ( float *, struct dm_par_s * );
216 void ( * pf_downmix_3f_1r_to_2ch ) ( float *, struct dm_par_s * );
217 void ( * pf_downmix_2f_2r_to_2ch ) ( float *, struct dm_par_s * );
218 void ( * pf_downmix_2f_1r_to_2ch ) ( float *, struct dm_par_s * );
219 void ( * pf_downmix_3f_0r_to_2ch ) ( float *, struct dm_par_s * );
220 void ( * pf_stream_sample_2ch_to_s16 ) ( s16 *, float *, float * );
221 void ( * pf_stream_sample_1ch_to_s16 ) ( s16 *, float * );
229 typedef struct module_functions_s
231 /* XXX: The order here has to be the same as above for the #defines */
232 function_list_t intf;
233 function_list_t access;
234 function_list_t input;
235 function_list_t decaps;
236 function_list_t adec;
237 function_list_t vdec;
238 function_list_t motion;
239 function_list_t idct;
240 function_list_t aout;
241 function_list_t vout;
243 function_list_t imdct;
244 function_list_t downmix;
246 } module_functions_t;
248 typedef struct module_functions_s * p_module_functions_t;
250 /*****************************************************************************
251 * Macros used to build the configuration structure.
252 *****************************************************************************/
254 /* Mandatory first and last parts of the structure */
255 #define MODULE_CONFIG_ITEM_START 0xdead /* The main window */
256 #define MODULE_CONFIG_ITEM_END 0xbeef /* End of the window */
258 /* Configuration widgets */
259 #define MODULE_CONFIG_ITEM_WINDOW 0x0001 /* The main window */
260 #define MODULE_CONFIG_ITEM_PANE 0x0002 /* A notebook pane */
261 #define MODULE_CONFIG_ITEM_FRAME 0x0003 /* A frame */
262 #define MODULE_CONFIG_ITEM_COMMENT 0x0004 /* A comment text */
263 #define MODULE_CONFIG_ITEM_STRING 0x0005 /* A string */
264 #define MODULE_CONFIG_ITEM_FILE 0x0006 /* A file selector */
265 #define MODULE_CONFIG_ITEM_CHECK 0x0007 /* A checkbox */
266 #define MODULE_CONFIG_ITEM_CHOOSE 0x0008 /* A choose box */
267 #define MODULE_CONFIG_ITEM_RADIO 0x0009 /* A radio box */
268 #define MODULE_CONFIG_ITEM_SCALE 0x000a /* A horizontal ruler */
269 #define MODULE_CONFIG_ITEM_SPIN 0x000b /* A numerical selector */
271 typedef struct module_config_s
273 int i_type; /* Configuration widget type */
274 char * psz_text; /* Text commenting or describing the widget */
275 char * psz_name; /* Variable name */
276 void * p_getlist; /* Function to call to get a choice list */
277 void * p_change; /* Function to call when commiting a change */
280 /*****************************************************************************
281 * Bank and module description structures
282 *****************************************************************************/
284 /* The module description structure */
285 typedef struct module_s
287 boolean_t b_builtin; /* Set to true if the module is built in */
293 module_handle_t handle; /* Unique handle */
294 char * psz_filename; /* Module filename */
300 int ( *pf_deactivate ) ( struct module_s * );
306 char * psz_name; /* Module _unique_ name */
307 char * psz_longname; /* Module descriptive name */
308 char * psz_version; /* Module version */
310 int i_usage; /* Reference counter */
311 int i_unused_delay; /* Delay until module is unloaded */
313 struct module_s * next; /* Next module */
314 struct module_s * prev; /* Previous module */
316 module_config_t *p_config; /* Module configuration structure */
317 struct module_symbols_s *p_symbols;
319 u32 i_capabilities; /* Capability list */
320 p_module_functions_t p_functions; /* Capability functions */
324 /*****************************************************************************
325 * Exported functions.
326 *****************************************************************************/
327 void module_InitBank ( void );
328 void module_EndBank ( void );
329 void module_ResetBank ( void );
330 void module_ManageBank ( void );
331 module_t * module_Need ( int i_capabilities, void *p_data );
332 void module_Unneed ( module_t * p_module );