| Pierre Ossman | 67b2b2f | 2009-03-06 10:12:55 +0000 | [diff] [blame^] | 1 | /* Copyright 2009 Pierre Ossman for Cendio AB |
| 2 | * |
| 3 | * This is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This software is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this software; if not, write to the Free Software |
| 15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 16 | * USA. |
| 17 | */ |
| 18 | |
| 19 | namespace rfb { |
| 20 | |
| 21 | |
| 22 | inline Pixel PixelFormat::pixelFromBuffer(const rdr::U8* buffer) const |
| 23 | { |
| 24 | Pixel p; |
| 25 | |
| 26 | p = 0; |
| 27 | |
| 28 | if (bigEndian) { |
| 29 | switch (bpp) { |
| 30 | case 32: |
| 31 | p |= ((Pixel)*(buffer++)) << 24; |
| 32 | p |= ((Pixel)*(buffer++)) << 16; |
| 33 | case 16: |
| 34 | p |= ((Pixel)*(buffer++)) << 8; |
| 35 | case 8: |
| 36 | p |= *buffer; |
| 37 | } |
| 38 | } else { |
| 39 | p |= buffer[0]; |
| 40 | if (bpp >= 16) { |
| 41 | p |= ((Pixel)buffer[1]) << 8; |
| 42 | if (bpp == 32) |
| 43 | p |= ((Pixel)buffer[2]) << 16; |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | return p; |
| 48 | } |
| 49 | |
| 50 | |
| 51 | inline void PixelFormat::rgbFromPixel(Pixel p, ColourMap* cm, rdr::U16 *r, rdr::U16 *g, rdr::U16 *b) const |
| 52 | { |
| 53 | if (trueColour) { |
| 54 | /* We don't need to mask since we shift out unwanted bits */ |
| 55 | *r = (p >> redShift) << redConvShift; |
| 56 | *g = (p >> greenShift) << greenConvShift; |
| 57 | *b = (p >> blueShift) << blueConvShift; |
| 58 | } else if (cm) { |
| 59 | int ir, ig, ib; |
| 60 | cm->lookup(p, &ir, &ig, &ib); |
| 61 | *r = ir; |
| 62 | *g = ig; |
| 63 | *b = ib; |
| 64 | } else { |
| 65 | // XXX just return 0 for colour map? |
| 66 | *r = 0; |
| 67 | *g = 0; |
| 68 | *b = 0; |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | |
| 73 | inline void PixelFormat::rgbFromPixel(Pixel p, ColourMap* cm, rdr::U8 *r, rdr::U8 *g, rdr::U8 *b) const |
| 74 | { |
| 75 | if (trueColour) { |
| 76 | *r = (p >> redShift) << (redConvShift - 8); |
| 77 | *g = (p >> greenShift) << (greenConvShift - 8); |
| 78 | *b = (p >> blueShift) << (blueConvShift - 8); |
| 79 | } else { |
| 80 | rdr::U16 r2, g2, b2; |
| 81 | |
| 82 | rgbFromPixel(p, cm, &r2, &g2, &b2); |
| 83 | |
| 84 | *r = r2 >> 8; |
| 85 | *g = g2 >> 8; |
| 86 | *b = b2 >> 8; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | |
| 91 | } |
| 92 | |