diff options
Diffstat (limited to 'ui/vnc-enc-zywrle-template.c')
| -rw-r--r-- | ui/vnc-enc-zywrle-template.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/ui/vnc-enc-zywrle-template.c b/ui/vnc-enc-zywrle-template.c new file mode 100644 index 00000000..561f7bfa --- /dev/null +++ b/ui/vnc-enc-zywrle-template.c @@ -0,0 +1,170 @@ + +/******************************************************************** + * * + * THIS FILE IS PART OF THE 'ZYWRLE' VNC CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A FOLLOWING BSD-STYLE SOURCE LICENSE. * + * PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE 'ZYWRLE' VNC CODEC SOURCE CODE IS (C) COPYRIGHT 2006 * + * BY Hitachi Systems & Services, Ltd. * + * (Noriaki Yamazaki, Research & Development Center) * + * * + * * + ******************************************************************** +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + +- Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. + +- Neither the name of the Hitachi Systems & Services, Ltd. nor +the names of its contributors may be used to endorse or promote +products derived from this software without specific prior written +permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION +OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + ********************************************************************/ + +/* Change Log: + V0.02 : 2008/02/04 : Fix mis encode/decode when width != scanline + (Thanks Johannes Schindelin, author of LibVNC + Server/Client) + V0.01 : 2007/02/06 : Initial release +*/ + +/* +[References] + PLHarr: + Senecal, J. G., P. Lindstrom, M. A. Duchaineau, and K. I. Joy, + "An Improved N-Bit to N-Bit Reversible Haar-Like Transform," + Pacific Graphics 2004, October 2004, pp. 371-380. + EZW: + Shapiro, JM: Embedded Image Coding Using Zerotrees of Wavelet Coefficients, + IEEE Trans. Signal. Process., Vol.41, pp.3445-3462 (1993). +*/ + + +/* Template Macro stuffs. */ +#undef ZYWRLE_ANALYZE +#undef ZYWRLE_SYNTHESIZE + +#define ZYWRLE_SUFFIX ZRLE_CONCAT2(ZRLE_BPP,ZRLE_ENDIAN_SUFFIX) + +#define ZYWRLE_ANALYZE ZRLE_CONCAT2(zywrle_analyze_, ZYWRLE_SUFFIX) +#define ZYWRLE_SYNTHESIZE ZRLE_CONCAT2(zywrle_synthesize_,ZYWRLE_SUFFIX) + +#define ZYWRLE_RGBYUV ZRLE_CONCAT2(zywrle_rgbyuv_, ZYWRLE_SUFFIX) +#define ZYWRLE_YUVRGB ZRLE_CONCAT2(zywrle_yuvrgb_, ZYWRLE_SUFFIX) +#define ZYWRLE_YMASK ZRLE_CONCAT2(ZYWRLE_YMASK, ZRLE_BPP) +#define ZYWRLE_UVMASK ZRLE_CONCAT2(ZYWRLE_UVMASK, ZRLE_BPP) +#define ZYWRLE_LOAD_PIXEL ZRLE_CONCAT2(ZYWRLE_LOAD_PIXEL, ZRLE_BPP) +#define ZYWRLE_SAVE_PIXEL ZRLE_CONCAT2(ZYWRLE_SAVE_PIXEL, ZRLE_BPP) + +/* Packing/Unpacking pixel stuffs. + Endian conversion stuffs. */ +#undef S_0 +#undef S_1 +#undef L_0 +#undef L_1 +#undef L_2 + +#if ZYWRLE_ENDIAN == ENDIAN_BIG +# define S_0 1 +# define S_1 0 +# define L_0 3 +# define L_1 2 +# define L_2 1 +#else +# define S_0 0 +# define S_1 1 +# define L_0 0 +# define L_1 1 +# define L_2 2 +#endif + +#define ZYWRLE_QUANTIZE +#include "vnc-enc-zywrle.h" + +#ifndef ZRLE_COMPACT_PIXEL +static inline void ZYWRLE_RGBYUV(int *buf, ZRLE_PIXEL *data, + int width, int height, int scanline) +{ + int r, g, b; + int y, u, v; + int *line; + int *end; + + end = buf + height * width; + while (buf < end) { + line = buf + width; + while (buf < line) { + ZYWRLE_LOAD_PIXEL(data, r, g, b); + ZYWRLE_RGBYUV_(r, g, b, y, u, v, ZYWRLE_YMASK, ZYWRLE_UVMASK); + ZYWRLE_SAVE_COEFF(buf, v, y, u); + buf++; + data++; + } + data += scanline - width; + } +} + +static ZRLE_PIXEL *ZYWRLE_ANALYZE(ZRLE_PIXEL *dst, ZRLE_PIXEL *src, + int w, int h, int scanline, int level, + int *buf) { + int l; + int uw = w; + int uh = h; + int *top; + int *end; + int *line; + ZRLE_PIXEL *p; + int r, g, b; + int s; + int *ph; + + zywrle_calc_size(&w, &h, level); + + if (w == 0 || h == 0) { + return NULL; + } + uw -= w; + uh -= h; + + p = dst; + ZYWRLE_LOAD_UNALIGN(src,*(ZRLE_PIXEL*)top = *p;); + ZYWRLE_RGBYUV(buf, src, w, h, scanline); + wavelet(buf, w, h, level); + for (l = 0; l < level; l++) { + ZYWRLE_PACK_COEFF(buf, dst, 3, w, h, scanline, l); + ZYWRLE_PACK_COEFF(buf, dst, 2, w, h, scanline, l); + ZYWRLE_PACK_COEFF(buf, dst, 1, w, h, scanline, l); + if (l == level - 1) { + ZYWRLE_PACK_COEFF(buf, dst, 0, w, h, scanline, l); + } + } + ZYWRLE_SAVE_UNALIGN(dst,*dst = *(ZRLE_PIXEL*)top;); + return dst; +} +#endif /* ZRLE_COMPACT_PIXEL */ + +#undef ZYWRLE_RGBYUV +#undef ZYWRLE_YUVRGB +#undef ZYWRLE_LOAD_PIXEL +#undef ZYWRLE_SAVE_PIXEL |