pwc-uncompress.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:3k
- /* (C) 1999-2001 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_DEC_H
- #define PWC_DEC_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