| 1 | /*
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| 2 | (C) 2001 Nemosoft Unv. <nemosoft@smcc.demon.nl>
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| 3 |
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| 4 | This program is free software; you can redistribute it and/or modify
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| 5 | it under the terms of the GNU General Public License as published by
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| 6 | the Free Software Foundation; either version 2 of the License, or
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| 7 | (at your option) any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License
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| 15 | along with this program; if not, write to the Free Software
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| 16 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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| 17 |
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| 18 | */
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| 19 |
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| 20 |
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| 21 | /* 'Viewport' conversion routines. These functions convert from one colour
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| 22 | space to another, taking into account that the source image has a smaller
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| 23 | size than the view, and is placed inside the view:
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| 24 |
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| 25 | +-------view.x------------+
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| 26 | | |
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| 27 | | +---image.x---+ |
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| 28 | | | | |
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| 29 | | | | |
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| 30 | | +-------------+ |
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| 31 | | |
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| 32 | +-------------------------+
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| 33 |
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| 34 | The image should always be smaller than the view. The offset (top-left
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| 35 | corner of the image) should be precomputed, so you can place the image
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| 36 | anywhere in the view.
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| 37 |
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| 38 | The functions take these parameters:
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| 39 | - width image width (in pixels)
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| 40 | - height image height (in pixels)
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| 41 | - plus view width (in pixels)
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| 42 | *src pointer at start of image
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| 43 | *dst pointer at offset (!) in view
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| 44 | */
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| 45 |
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| 46 |
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| 47 | #ifndef VCVT_H
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| 48 | #define VCVT_H
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| 49 |
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| 50 | #ifdef __cplusplus
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| 51 | extern "C" {
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| 52 | #endif
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| 53 |
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| 54 | /* Functions in vcvt_i386.S/vcvt_c.c */
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| 55 | /* 4:2:0 YUV interlaced to RGB/BGR */
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| 56 | void vcvt_420i_bgr24(int width, int height, int plus, void *src, void *dst);
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| 57 | void vcvt_420i_rgb24(int width, int height, int plus, void *src, void *dst);
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| 58 | void vcvt_420i_bgr32(int width, int height, int plus, void *src, void *dst);
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| 59 | void vcvt_420i_rgb32(int width, int height, int plus, void *src, void *dst);
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| 60 |
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| 61 |
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| 62 | /* Go from 420i to other yuv formats */
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| 63 | void vcvt_420i_420p(int width, int height, int plus, void *src, void *dsty, void *dstu, void *dstv);
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| 64 | void vcvt_420i_yuyv(int width, int height, int plus, void *src, void *dst);
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| 65 |
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| 66 | #if 0
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| 67 | #endif
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| 68 |
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| 69 | #ifdef __cplusplus
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| 70 | }
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| 71 | #endif
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| 72 |
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| 73 | #endif
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