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178 lines
7.2 KiB
178 lines
7.2 KiB
/*****************************************************************************
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* modules.h : Module management functions.
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*****************************************************************************
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* Copyright (C) 2001 VideoLAN
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*
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* Authors: Samuel Hocevar <sam@zoy.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/* Number of tries before we unload an unused module */
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#define MODULE_HIDE_DELAY 50
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/* The module handle type. */
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#ifdef SYS_BEOS
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typedef int module_handle_t;
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#else
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typedef void * module_handle_t;
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#endif
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/*****************************************************************************
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* Module capabilities.
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*****************************************************************************/
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#define MODULE_CAPABILITY_NULL 0 /* The Module can't do anything */
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#define MODULE_CAPABILITY_INTF 1<<0 /* Interface */
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#define MODULE_CAPABILITY_INPUT 1<<1 /* Input */
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#define MODULE_CAPABILITY_DECAPS 1<<2 /* Decaps */
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#define MODULE_CAPABILITY_ADEC 1<<3 /* Audio decoder */
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#define MODULE_CAPABILITY_VDEC 1<<4 /* Video decoder */
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#define MODULE_CAPABILITY_AOUT 1<<5 /* Audio output */
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#define MODULE_CAPABILITY_VOUT 1<<6 /* Video output */
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#define MODULE_CAPABILITY_YUV 1<<7 /* YUV colorspace conversion */
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#define MODULE_CAPABILITY_AFX 1<<8 /* Audio effects */
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#define MODULE_CAPABILITY_VFX 1<<9 /* Video effects */
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/* FIXME: not yet used */
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typedef struct probedata_s
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{
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struct
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{
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char * psz_data;
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} aout;
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} probedata_t;
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/* FIXME: find a nicer way to do this. */
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typedef struct function_list_s
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{
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int ( * p_probe ) ( probedata_t * p_data );
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union
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{
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struct
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{
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int ( * p_open ) ( struct aout_thread_s * p_aout );
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int ( * p_setformat ) ( struct aout_thread_s * p_aout );
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long ( * p_getbufinfo ) ( struct aout_thread_s * p_aout,
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long l_buffer_info );
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void ( * p_play ) ( struct aout_thread_s * p_aout,
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byte_t *buffer, int i_size );
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void ( * p_close ) ( struct aout_thread_s * p_aout );
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} aout;
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} functions;
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} function_list_t;
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typedef struct module_functions_s
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{
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/* The order here has to be the same as above for the #defines */
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function_list_t intf;
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function_list_t input;
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function_list_t decaps;
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function_list_t adec;
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function_list_t vdec;
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function_list_t aout;
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function_list_t vout;
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function_list_t yuv;
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function_list_t afx;
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function_list_t vfx;
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} module_functions_t;
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typedef struct module_functions_s * p_module_functions_t;
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/*****************************************************************************
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* Macros used to build the configuration structure.
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*****************************************************************************/
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/* Mandatory first and last parts of the structure */
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#define MODULE_CONFIG_ITEM_START 0x01 /* The main window */
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#define MODULE_CONFIG_ITEM_END 0x00 /* End of the window */
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/* Configuration widgets */
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#define MODULE_CONFIG_ITEM_PANE 0x02 /* A notebook pane */
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#define MODULE_CONFIG_ITEM_FRAME 0x03 /* A frame */
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#define MODULE_CONFIG_ITEM_COMMENT 0x04 /* A comment text */
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#define MODULE_CONFIG_ITEM_STRING 0x05 /* A string */
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#define MODULE_CONFIG_ITEM_FILE 0x06 /* A file selector */
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#define MODULE_CONFIG_ITEM_CHECK 0x07 /* A checkbox */
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#define MODULE_CONFIG_ITEM_CHOOSE 0x08 /* A choose box */
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#define MODULE_CONFIG_ITEM_RADIO 0x09 /* A radio box */
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#define MODULE_CONFIG_ITEM_SCALE 0x0a /* A horizontal ruler */
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#define MODULE_CONFIG_ITEM_SPIN 0x0b /* A numerical selector */
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typedef struct module_config_s
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{
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int i_type; /* Configuration widget type */
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char * psz_text; /* Text commenting or describing the widget */
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char * psz_name; /* Variable name */
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void * p_getlist; /* Function to call to get a choice list */
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void * p_change; /* Function to call when commiting a change */
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} module_config_t;
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/*****************************************************************************
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* Bank and module description structures
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*****************************************************************************/
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/* The module bank structure */
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typedef struct module_bank_s
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{
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struct module_s * first; /* First module of the bank */
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vlc_mutex_t lock; /* Global lock -- you can't imagine how awful it
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is to design thread-safe linked lists. */
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} module_bank_t;
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/* The module description structure */
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typedef struct module_s
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{
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boolean_t b_builtin; /* Set to true if the module is built in */
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module_handle_t handle; /* Unique handle to refer to the module */
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char * psz_filename; /* Module filename */
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char * psz_name; /* Module _unique_ name */
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char * psz_longname; /* Module descriptive name */
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char * psz_version; /* Module version */
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int i_usage; /* Reference counter */
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int i_unused_delay; /* Delay until module is unloaded */
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struct module_s * next; /* Next module */
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struct module_s * prev; /* Previous module */
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module_config_t * p_config; /* Module configuration structure table */
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u32 i_capabilities; /* Capability list */
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p_module_functions_t p_functions; /* Capability functions */
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} module_t;
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/*****************************************************************************
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* Exported functions.
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*****************************************************************************/
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module_bank_t * module_CreateBank ( void );
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void module_InitBank ( module_bank_t * p_bank );
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void module_DestroyBank ( module_bank_t * p_bank );
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void module_ResetBank ( module_bank_t * p_bank );
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void module_ManageBank ( module_bank_t * p_bank );
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module_t * module_Need ( module_bank_t *p_bank,
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int i_capabilities, void *p_data );
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void module_Unneed ( module_bank_t * p_bank,
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module_t * p_module );
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