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846 | giacomo | 1 | /* (C) 1999-2003 Nemosoft Unv. (webcam@smcc.demon.nl) |
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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 | |||
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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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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 |