/* (C) 1999-2002 Nemosoft Unv. (webcam@smcc.demon.nl) 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 02111-1307 USA */ /* This file is the bridge between the kernel module and the plugin; it describes the structures and datatypes used in both modules. Any significant change should be reflected by increasing the pwc_decompressor_version major number. */ #ifndef PWC_UNCOMPRESS_H #define PWC_UNCOMPRESS_H #include <linux/config.h> #include <linux/list.h> #include "pwc.h" #ifdef __cplusplus extern "C" { #endif /* The decompressor structure. Every type of decompressor registers itself with the main module. When a device is opened, it looks up the correct compressor, and uses that when a compressed video mode is requested. */ struct pwc_decompressor { int type; /* type of camera (645, 680, etc) */ int table_size; /* memory needed */ void (* init)(int release, void *buffer, void *table); /* Initialization routine; should be called after each set_video_mode */ void (* exit)(void); /* Cleanup routine */ void (* decompress)(struct pwc_coord *image, struct pwc_coord *view, struct pwc_coord *offset, void *src, void *dst, int planar, void *table, int bandlength); void (* lock)(void); /* make sure module cannot be unloaded */ void (* unlock)(void); /* release lock on module */ struct list_head pwcd_list; }; /* Our structure version number. Is set to the version number major */ extern const int pwc_decompressor_version; /* Adds decompressor to list, based on its 'type' field (which matches the 'type' field in pwc_device; ignores any double requests */ extern void pwc_register_decompressor(struct pwc_decompressor *pwcd); /* Removes decompressor, based on the type number */ extern void pwc_unregister_decompressor(int type); /* Returns pointer to decompressor struct, or NULL if it doesn't exist */ extern struct pwc_decompressor *pwc_find_decompressor(int type); #ifdef CONFIG_USB_PWCX /* If the decompressor is compiled in, we must call these manually */ extern int usb_pwcx_init(void); extern void usb_pwcx_exit(void); #endif #ifdef __cplusplus } #endif #endif