Corentin Chary | 148954f | 2011-02-04 09:06:01 +0100 | [diff] [blame] | 1 | |
| 2 | /******************************************************************** |
| 3 | * * |
| 4 | * THIS FILE IS PART OF THE 'ZYWRLE' VNC CODEC SOURCE CODE. * |
| 5 | * * |
| 6 | * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
| 7 | * GOVERNED BY A FOLLOWING BSD-STYLE SOURCE LICENSE. * |
| 8 | * PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
| 9 | * * |
| 10 | * THE 'ZYWRLE' VNC CODEC SOURCE CODE IS (C) COPYRIGHT 2006 * |
| 11 | * BY Hitachi Systems & Services, Ltd. * |
Stefan Weil | e7d8100 | 2011-12-10 00:19:46 +0100 | [diff] [blame] | 12 | * (Noriaki Yamazaki, Research & Development Center) * |
Corentin Chary | 148954f | 2011-02-04 09:06:01 +0100 | [diff] [blame] | 13 | * * |
| 14 | * * |
| 15 | ******************************************************************** |
| 16 | Redistribution and use in source and binary forms, with or without |
| 17 | modification, are permitted provided that the following conditions |
| 18 | are met: |
| 19 | |
| 20 | - Redistributions of source code must retain the above copyright |
| 21 | notice, this list of conditions and the following disclaimer. |
| 22 | |
| 23 | - Redistributions in binary form must reproduce the above copyright |
| 24 | notice, this list of conditions and the following disclaimer in the |
| 25 | documentation and/or other materials provided with the distribution. |
| 26 | |
| 27 | - Neither the name of the Hitachi Systems & Services, Ltd. nor |
| 28 | the names of its contributors may be used to endorse or promote |
| 29 | products derived from this software without specific prior written |
| 30 | permission. |
| 31 | |
| 32 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 33 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 34 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 35 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION |
| 36 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 37 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 38 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 39 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 40 | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 41 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 42 | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 43 | ********************************************************************/ |
| 44 | |
| 45 | /* Change Log: |
| 46 | V0.02 : 2008/02/04 : Fix mis encode/decode when width != scanline |
Paolo Bonzini | 7d37435 | 2018-12-13 23:37:37 +0100 | [diff] [blame] | 47 | (Thanks Johannes Schindelin, author of LibVNC |
| 48 | Server/Client) |
Corentin Chary | 148954f | 2011-02-04 09:06:01 +0100 | [diff] [blame] | 49 | V0.01 : 2007/02/06 : Initial release |
| 50 | */ |
| 51 | |
| 52 | /* |
| 53 | [References] |
| 54 | PLHarr: |
| 55 | Senecal, J. G., P. Lindstrom, M. A. Duchaineau, and K. I. Joy, |
| 56 | "An Improved N-Bit to N-Bit Reversible Haar-Like Transform," |
| 57 | Pacific Graphics 2004, October 2004, pp. 371-380. |
| 58 | EZW: |
| 59 | Shapiro, JM: Embedded Image Coding Using Zerotrees of Wavelet Coefficients, |
| 60 | IEEE Trans. Signal. Process., Vol.41, pp.3445-3462 (1993). |
| 61 | */ |
| 62 | |
| 63 | |
| 64 | /* Template Macro stuffs. */ |
| 65 | #undef ZYWRLE_ANALYZE |
| 66 | #undef ZYWRLE_SYNTHESIZE |
| 67 | |
| 68 | #define ZYWRLE_SUFFIX ZRLE_CONCAT2(ZRLE_BPP,ZRLE_ENDIAN_SUFFIX) |
| 69 | |
| 70 | #define ZYWRLE_ANALYZE ZRLE_CONCAT2(zywrle_analyze_, ZYWRLE_SUFFIX) |
| 71 | #define ZYWRLE_SYNTHESIZE ZRLE_CONCAT2(zywrle_synthesize_,ZYWRLE_SUFFIX) |
| 72 | |
| 73 | #define ZYWRLE_RGBYUV ZRLE_CONCAT2(zywrle_rgbyuv_, ZYWRLE_SUFFIX) |
| 74 | #define ZYWRLE_YUVRGB ZRLE_CONCAT2(zywrle_yuvrgb_, ZYWRLE_SUFFIX) |
| 75 | #define ZYWRLE_YMASK ZRLE_CONCAT2(ZYWRLE_YMASK, ZRLE_BPP) |
| 76 | #define ZYWRLE_UVMASK ZRLE_CONCAT2(ZYWRLE_UVMASK, ZRLE_BPP) |
| 77 | #define ZYWRLE_LOAD_PIXEL ZRLE_CONCAT2(ZYWRLE_LOAD_PIXEL, ZRLE_BPP) |
| 78 | #define ZYWRLE_SAVE_PIXEL ZRLE_CONCAT2(ZYWRLE_SAVE_PIXEL, ZRLE_BPP) |
| 79 | |
| 80 | /* Packing/Unpacking pixel stuffs. |
| 81 | Endian conversion stuffs. */ |
| 82 | #undef S_0 |
| 83 | #undef S_1 |
| 84 | #undef L_0 |
| 85 | #undef L_1 |
| 86 | #undef L_2 |
| 87 | |
| 88 | #if ZYWRLE_ENDIAN == ENDIAN_BIG |
| 89 | # define S_0 1 |
| 90 | # define S_1 0 |
| 91 | # define L_0 3 |
| 92 | # define L_1 2 |
| 93 | # define L_2 1 |
| 94 | #else |
| 95 | # define S_0 0 |
| 96 | # define S_1 1 |
| 97 | # define L_0 0 |
| 98 | # define L_1 1 |
| 99 | # define L_2 2 |
| 100 | #endif |
| 101 | |
| 102 | #define ZYWRLE_QUANTIZE |
Peter Maydell | e16f4c8 | 2016-01-29 17:49:51 +0000 | [diff] [blame] | 103 | #include "qemu/osdep.h" |
Corentin Chary | 148954f | 2011-02-04 09:06:01 +0100 | [diff] [blame] | 104 | #include "vnc-enc-zywrle.h" |
| 105 | |
| 106 | #ifndef ZRLE_COMPACT_PIXEL |
| 107 | static inline void ZYWRLE_RGBYUV(int *buf, ZRLE_PIXEL *data, |
| 108 | int width, int height, int scanline) |
| 109 | { |
| 110 | int r, g, b; |
| 111 | int y, u, v; |
| 112 | int *line; |
| 113 | int *end; |
| 114 | |
| 115 | end = buf + height * width; |
| 116 | while (buf < end) { |
| 117 | line = buf + width; |
| 118 | while (buf < line) { |
| 119 | ZYWRLE_LOAD_PIXEL(data, r, g, b); |
| 120 | ZYWRLE_RGBYUV_(r, g, b, y, u, v, ZYWRLE_YMASK, ZYWRLE_UVMASK); |
| 121 | ZYWRLE_SAVE_COEFF(buf, v, y, u); |
| 122 | buf++; |
| 123 | data++; |
| 124 | } |
| 125 | data += scanline - width; |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | static ZRLE_PIXEL *ZYWRLE_ANALYZE(ZRLE_PIXEL *dst, ZRLE_PIXEL *src, |
| 130 | int w, int h, int scanline, int level, |
| 131 | int *buf) { |
| 132 | int l; |
| 133 | int uw = w; |
| 134 | int uh = h; |
| 135 | int *top; |
| 136 | int *end; |
| 137 | int *line; |
| 138 | ZRLE_PIXEL *p; |
| 139 | int r, g, b; |
| 140 | int s; |
| 141 | int *ph; |
| 142 | |
| 143 | zywrle_calc_size(&w, &h, level); |
| 144 | |
| 145 | if (w == 0 || h == 0) { |
| 146 | return NULL; |
| 147 | } |
| 148 | uw -= w; |
| 149 | uh -= h; |
| 150 | |
| 151 | p = dst; |
| 152 | ZYWRLE_LOAD_UNALIGN(src,*(ZRLE_PIXEL*)top = *p;); |
| 153 | ZYWRLE_RGBYUV(buf, src, w, h, scanline); |
| 154 | wavelet(buf, w, h, level); |
| 155 | for (l = 0; l < level; l++) { |
| 156 | ZYWRLE_PACK_COEFF(buf, dst, 3, w, h, scanline, l); |
| 157 | ZYWRLE_PACK_COEFF(buf, dst, 2, w, h, scanline, l); |
| 158 | ZYWRLE_PACK_COEFF(buf, dst, 1, w, h, scanline, l); |
| 159 | if (l == level - 1) { |
| 160 | ZYWRLE_PACK_COEFF(buf, dst, 0, w, h, scanline, l); |
| 161 | } |
| 162 | } |
| 163 | ZYWRLE_SAVE_UNALIGN(dst,*dst = *(ZRLE_PIXEL*)top;); |
| 164 | return dst; |
| 165 | } |
| 166 | #endif /* ZRLE_COMPACT_PIXEL */ |
| 167 | |
| 168 | #undef ZYWRLE_RGBYUV |
| 169 | #undef ZYWRLE_YUVRGB |
| 170 | #undef ZYWRLE_LOAD_PIXEL |
| 171 | #undef ZYWRLE_SAVE_PIXEL |