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| Rev | Author | Line No. | Line |
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| 846 | giacomo | 1 | /* (C) 1999-2003 Nemosoft Unv. (webcam@smcc.demon.nl) |
| 2 | |||
| 3 | This program is free software; you can redistribute it and/or modify |
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| 4 | it under the terms of the GNU General Public License as published by |
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| 5 | the Free Software Foundation; either version 2 of the License, or |
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| 6 | (at your option) any later version. |
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| 7 | |||
| 8 | This program is distributed in the hope that it will be useful, |
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| 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 11 | GNU General Public License for more details. |
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| 12 | |||
| 13 | You should have received a copy of the GNU General Public License |
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| 14 | along with this program; if not, write to the Free Software |
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| 15 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 16 | */ |
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| 17 | |||
| 18 | /* This file is the bridge between the kernel module and the plugin; it |
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| 19 | describes the structures and datatypes used in both modules. Any |
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| 20 | significant change should be reflected by increasing the |
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| 21 | pwc_decompressor_version major number. |
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| 22 | */ |
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| 23 | #ifndef PWC_UNCOMPRESS_H |
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| 24 | #define PWC_UNCOMPRESS_H |
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| 25 | |||
| 26 | #include <linux/config.h> |
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| 27 | #include <linux/list.h> |
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| 28 | |||
| 29 | #include "pwc.h" |
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| 30 | |||
| 31 | /* from pwc-dec.h */ |
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| 32 | #define PWCX_FLAG_PLANAR 0x0001 |
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| 33 | /* */ |
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| 34 | |||
| 35 | |||
| 36 | #ifdef __cplusplus |
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| 37 | extern "C" { |
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| 38 | #endif |
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| 39 | |||
| 40 | /* The decompressor structure. |
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| 41 | Every type of decompressor registers itself with the main module. |
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| 42 | When a device is opened, it looks up the correct compressor, and |
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| 43 | uses that when a compressed video mode is requested. |
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| 44 | */ |
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| 45 | struct pwc_decompressor |
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| 46 | { |
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| 47 | int type; /* type of camera (645, 680, etc) */ |
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| 48 | int table_size; /* memory needed */ |
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| 49 | |||
| 50 | void (* init)(int type, int release, void *buffer, void *table); /* Initialization routine; should be called after each set_video_mode */ |
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| 51 | void (* exit)(void); /* Cleanup routine */ |
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| 52 | void (* decompress)(struct pwc_coord *image, struct pwc_coord *view, struct pwc_coord *offset, |
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| 53 | void *src, void *dst, int flags, |
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| 54 | void *table, int bandlength); |
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| 55 | void (* lock)(void); /* make sure module cannot be unloaded */ |
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| 56 | void (* unlock)(void); /* release lock on module */ |
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| 57 | |||
| 58 | struct list_head pwcd_list; |
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| 59 | }; |
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| 60 | |||
| 61 | |||
| 62 | /* Our structure version number. Is set to the version number major */ |
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| 63 | extern const int pwc_decompressor_version; |
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| 64 | |||
| 65 | /* Adds decompressor to list, based on its 'type' field (which matches the 'type' field in pwc_device; ignores any double requests */ |
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| 66 | extern void pwc_register_decompressor(struct pwc_decompressor *pwcd); |
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| 67 | /* Removes decompressor, based on the type number */ |
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| 68 | extern void pwc_unregister_decompressor(int type); |
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| 69 | /* Returns pointer to decompressor struct, or NULL if it doesn't exist */ |
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| 70 | extern struct pwc_decompressor *pwc_find_decompressor(int type); |
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| 71 | |||
| 72 | #ifdef CONFIG_USB_PWCX |
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| 73 | /* If the decompressor is compiled in, we must call these manually */ |
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| 74 | extern int usb_pwcx_init(void); |
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| 75 | extern void usb_pwcx_exit(void); |
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| 76 | #endif |
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| 77 | |||
| 78 | #ifdef __cplusplus |
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| 79 | } |
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| 80 | #endif |
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| 81 | |||
| 82 | #endif |