| 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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