From 42e72ef5f513977227328efba9482225b643697a Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Sun, 13 Nov 2011 09:52:37 +0100 Subject: Imported nxcompext-3.1.0-2.tar.gz Summary: Imported nxcompext-3.1.0-2.tar.gz Keywords: Imported nxcompext-3.1.0-2.tar.gz into Git repository --- nxcompext/Mask.c | 794 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 794 insertions(+) create mode 100644 nxcompext/Mask.c (limited to 'nxcompext/Mask.c') diff --git a/nxcompext/Mask.c b/nxcompext/Mask.c new file mode 100644 index 000000000..b04989d44 --- /dev/null +++ b/nxcompext/Mask.c @@ -0,0 +1,794 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/. */ +/* */ +/* NXCOMPEXT, NX protocol compression and NX extensions to this software */ +/* are copyright of NoMachine. Redistribution and use of the present */ +/* software is allowed according to terms specified in the file LICENSE */ +/* which comes in the source distribution. */ +/* */ +/* Check http://www.nomachine.com/licensing.html for applicability. */ +/* */ +/* NX and NoMachine are trademarks of NoMachine S.r.l. */ +/* */ +/* All rigths reserved. */ +/* */ +/**************************************************************************/ + +#include + +#include "Xlib.h" + +#include "NXpack.h" + +#include "Mask.h" + +#define PANIC +#define WARNING +#undef TEST +#undef DEBUG + +/* + * Try first to reduce to a white or black + * pixel. If not possible, apply the mask. + * Note that correction is applied at the + * time pixel is unpacked. + */ + +#define MaskPixel(red, green, blue, mask) \ +\ +if (red > mask -> white_threshold && \ + green > mask -> white_threshold && \ + blue > mask -> white_threshold) \ +{ \ + red = green = blue = 0xff; \ +} \ +else if (red < mask -> black_threshold && \ + green < mask -> black_threshold && \ + blue < mask -> black_threshold) \ +{ \ + red = green = blue = 0x00; \ +} \ +else \ +{ \ + red = red & mask -> color_mask; \ + green = green & mask -> color_mask; \ + blue = blue & mask -> color_mask; \ +} + +int MaskImage(const ColorMask *mask, XImage *src_image, XImage *dst_image) +{ + unsigned long pixel; + + register unsigned int red; + register unsigned int green; + register unsigned int blue; + + register unsigned long data_size; + + register unsigned int i; + + data_size = (src_image -> bytes_per_line * src_image -> height) >> 2; + + #ifdef TEST + fprintf(stderr, "******MaskImage: Going to mask image with [%d] bits per pixel.\n", + src_image -> bits_per_pixel); + #endif + + if (src_image -> bits_per_pixel == 24 || src_image -> bits_per_pixel == 32) + { + register unsigned char *pixel_addr; + + for (i = 0; i < data_size; i++) + { + pixel = ((unsigned long *) src_image -> data)[i]; + + pixel_addr = (unsigned char *) &pixel; + + red = pixel_addr[2]; + green = pixel_addr[1]; + blue = pixel_addr[0]; + + #ifdef DEBUG + fprintf(stderr, "******MaskImage: 24/32 bits original R [%d] G [%d] B [%d] A [%d].\n", + red, green, blue, pixel_addr[3]); + #endif + + MaskPixel(red, green, blue, mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskImage: 24/32 bits masked R [%d] G [%d] B [%d] A [%d].\n", + red, green, blue, pixel_addr[3]); + #endif + + #ifdef DEBUG + fprintf(stderr, "******MaskImage: 24/32 bits pixel 0x%lx", pixel); + #endif + + pixel_addr[2] = red; + pixel_addr[1] = green; + pixel_addr[0] = blue; + + ((unsigned long*)dst_image -> data)[i] = pixel; + + #ifdef DEBUG + fprintf(stderr, " -> 0x%lx\n", pixel); + #endif + } + + return 1; + } + else if (src_image -> bits_per_pixel == 16) + { + /* + * FIXME: Masking doesn't work in 16 bpp. + * + + unsigned long src_addr, *dst_addr; + unsigned short *src_pixels_addr, *dst_pixels_addr; + + for (i = 0; i < data_size; i++) + { + src_addr = ((unsigned long *)src_image -> data)[i]; + dst_addr = (unsigned long *)((unsigned long *)dst_image -> data + i); + + src_pixels_addr = ((unsigned short *) &src_addr); + dst_pixels_addr = ((unsigned short *) dst_addr); + + red = (src_pixels_addr[0] & src_image -> red_mask) >> 8; + green = (src_pixels_addr[0] & src_image -> green_mask) >> 3; + blue = (src_pixels_addr[0] & src_image -> blue_mask) << 3; + + #ifdef DEBUG + fprintf(stderr, "******MaskImage: 16 bits original R [%d] G [%d] B [%d].\n", + red, green, blue); + #endif + + MaskPixel(red, green, blue, mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskImage: 16 bits masked R [%d] G [%d] B [%d].\n", + red, green, blue); + #endif + + dst_pixels_addr[0] = ((red << 8) & src_image -> red_mask) | + ((green << 3) & src_image -> green_mask) | + ((blue >> 3) & src_image -> blue_mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskImage: 16 bits pixel 0x%x", dst_pixels_addr[0]); + #endif + + red = (src_pixels_addr[1] & src_image -> red_mask) >> 8; + green = (src_pixels_addr[1] & src_image -> green_mask) >> 3; + blue = (src_pixels_addr[1] & src_image -> blue_mask) << 3; + + #ifdef DEBUG + fprintf(stderr, "******MaskImage: 16 bits original R [%d] G [%d] B [%d].\n", + red, green, blue); + #endif + + MaskPixel(red, green, blue, mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskImage: 16 bits masked R [%d] G [%d] B [%d].\n", + red, green, blue); + #endif + + dst_pixels_addr[1] = ((red << 8) & src_image -> red_mask) | + ((green << 3) & src_image -> green_mask) | + ((blue >> 3) & src_image -> blue_mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskImage: 16 bits pixel 0x%x", dst_pixels_addr[0]); + #endif + } + + if (dst_image -> width & 0x00000001) + { + int card32_per_line; + int i; + + card32_per_line = dst_image -> bytes_per_line >> 2; + + for (i = 0; i < dst_image -> height;) + { + ((CARD32 *) dst_image -> data)[(++i * card32_per_line) - 1] &= 0x0000ffff; + } + } + + * + * End of FIXME. + */ + } + else + { + #ifdef TEST + fprintf(stderr, "******MaskImage: PANIC! Cannot apply mask with [%d] bits per pixel.\n", + src_image -> bits_per_pixel); + #endif + + return 0; + } + + return 1; +} + +int MaskInPlaceImage(const ColorMask *mask, XImage *image) +{ + unsigned long pixel; + + register unsigned int red; + register unsigned int green; + register unsigned int blue; + + register unsigned int i; + + register unsigned long data_size; + + data_size = (image -> bytes_per_line * image -> height)>>2; + + #ifdef TEST + fprintf(stderr, "******MaskInPlaceImage: Going to mask image with [%d] bits per pixel.\n", + image -> bits_per_pixel); + #endif + + if (image -> bits_per_pixel == 24 || image -> bits_per_pixel == 32) + { + register unsigned char *pixel_addr; + + for (i = 0; i < data_size; i++) + { + pixel = ((unsigned long *) image -> data)[i]; + + pixel_addr = (unsigned char *) &pixel; + + red = pixel_addr[2]; + green = pixel_addr[1]; + blue = pixel_addr[0]; + + #ifdef DEBUG + fprintf(stderr, "******MaskInPlaceImage: 24/32 bits original R [%d] G [%d] B [%d] A [%d].\n", + red, green, blue, pixel_addr[3]); + #endif + + MaskPixel(red, green, blue, mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskInPlaceImage: 24/32 bits masked R [%d] G [%d] B [%d] A [%d].\n", + red, green, blue, pixel_addr[3]); + #endif + + #ifdef DEBUG + fprintf(stderr, "******MaskInPlaceImage: 24/32 bits pixel 0x%lx", pixel); + #endif + + pixel_addr[2] = red; + pixel_addr[1] = green; + pixel_addr[0] = blue; + + ((unsigned long *) image -> data)[i] = pixel; + + #ifdef DEBUG + fprintf(stderr, " -> 0x%lx\n", pixel); + #endif + } + + return 1; + } + else if (image -> bits_per_pixel == 16) + { + /* + * FIXME: Mask doesn't still work for 16 bits. + * + + unsigned long addr; + register unsigned short *pixels_addr; + + for (i = 0; i < data_size; i++) + { + addr = ((unsigned long *) image -> data)[i]; + + pixels_addr = ((unsigned short *) &addr); + + red = (pixels_addr[0] & image -> red_mask) >> 8; + green = (pixels_addr[0] & image -> green_mask) >> 3; + blue = (pixels_addr[0] & image -> blue_mask) << 3; + + #ifdef DEBUG + fprintf(stderr, "******MaskInPlaceImage: 16 bits original R [%d] G [%d] B [%d].\n", + red, green, blue); + #endif + + MaskPixel(red, green, blue, mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskInPlaceImage: 16 bits masked R [%d] G [%d] B [%d].\n", + red, green, blue); + #endif + + pixels_addr[0] = ((red << 8) & image -> red_mask) | + ((green << 3) & image -> green_mask) | + ((blue >> 3) & image -> blue_mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskInPlaceImage: 16 bits pixel 0x%x", pixels_addr[0]); + #endif + + red = (pixels_addr[1] & image -> red_mask) >> 8; + green = (pixels_addr[1] & image -> green_mask) >> 3; + blue = (pixels_addr[1] & image -> blue_mask) << 3; + + #ifdef DEBUG + fprintf(stderr, "******MaskInPlaceImage: 16 bits original R [%d] G [%d] B [%d].\n", + red, green, blue); + #endif + + MaskPixel(red, green, blue, mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskInPlaceImage: 16 bits masked R [%d] G [%d] B [%d].\n", + red, green, blue); + #endif + + pixels_addr[1] = ((red << 8) & image -> red_mask) | + ((green << 3) & image -> green_mask) | + ((blue >> 3) & image -> blue_mask); + + #ifdef DEBUG + fprintf(stderr, "******MaskInPlaceImage: 16 bits pixel 0x%x", pixels_addr[1]); + #endif + } + + if (image -> width & 0x00000001) + { + int card32_per_line; + int i; + + card32_per_line = image -> bytes_per_line >> 2; + + for (i = 0; i < image -> height;) + { + ((CARD32 *) image -> data)[(++i * card32_per_line) - 1] &= 0x0000ffff; + } + } + + * + * End of FIXME. + */ + } + else + { + #ifdef TEST + fprintf(stderr, "******MaskImage: PANIC! Cannot apply mask with [%d] bits per pixel.\n", + image -> bits_per_pixel); + #endif + + return 0; + } + + return 1; +} + +static int Pack16To8(unsigned int src_data_size, XImage *src_image, XImage *dst_image) +{ + unsigned short *src_pixel = (unsigned short *) src_image -> data; + unsigned char *dst_pixel = (unsigned char *) dst_image -> data; + + #ifdef DEBUG + unsigned int counter = 0; + #endif + + while (src_pixel < ((unsigned short *) (src_image -> data + src_data_size))) + { + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] value [0x%x] red [0x%x] green [0x%x] blue [0x%x].\n", + counter, *src_pixel, (*src_pixel & 0xc000) >> 8, + ((*src_pixel & 0x600) >> 3), (*src_pixel & 0x18) << 3); + #endif + + if (*src_pixel == 0x0) + { + *dst_pixel = 0x0; + } + else if (*src_pixel == 0xffff) + { + *dst_pixel = 0xff; + } + else + { + *dst_pixel = ((*src_pixel & 0xc000) >> 10) | + ((*src_pixel & 0x600) >> 7) | + ((*src_pixel & 0x18) >> 3); + } + + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] destination [0x%x].\n", + counter++, *dst_pixel); + #endif + + src_pixel++; + dst_pixel++; + } + + return 1; +} + +static int Pack24To8(unsigned int src_data_size, XImage *src_image, XImage *dst_image) +{ + unsigned char *src_pixel = (unsigned char *) src_image -> data; + unsigned char *dst_pixel = (unsigned char *) dst_image -> data; + + int i; + + unsigned int bytes_per_line = src_image -> bytes_per_line; + + unsigned char *end_of_line = (unsigned char *) (src_pixel + bytes_per_line); + + + #ifdef DEBUG + unsigned int counter = 0; + #endif + + for (i = 0; i < src_image -> height; i++ ) + { + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] value [0x%x%x%x] red [0x%x] green [0x%x] blue [0x%x].\n", + counter, src_pixel[0], src_pixel[1], src_pixel[2], src_pixel[0] & 0xc0, + src_pixel[1] & 0xc0, src_pixel[2] & 0xc0); + #endif + + while(src_pixel < end_of_line - 2) + { + if (src_pixel[0] == 0x00 && + src_pixel[1] == 0x00 && + src_pixel[2] == 0x00) + { + *dst_pixel = 0x0; + } + else if (src_pixel[0] == 0xff && + src_pixel[1] == 0xff && + src_pixel[2] == 0xff) + { + *dst_pixel = 0xff; + } + else + { + /* + * Pixel layout: + * + * 24 bit RRRRR000 GGGGG000 BBBBB000 -> 8 bit 00RRGGBB + */ + + *dst_pixel = (src_pixel[0] & 0xc0) >> 2 | + ((src_pixel[1] & 0xc0) >> 4) | + ((src_pixel[2] & 0xc0) >> 6); + } + + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] destination [0x%x].\n", + counter++, *dst_pixel); + #endif + + src_pixel += 3; + dst_pixel += 1; + } + + src_pixel = end_of_line; + end_of_line += bytes_per_line; + } + + return 1; +} + +static int Pack24To16(unsigned int src_data_size, XImage *src_image, XImage *dst_image) +{ + unsigned char *src_pixel = (unsigned char *) src_image -> data; + unsigned short *dst_pixel = (unsigned short *) dst_image -> data; + + int i; + + unsigned int bytes_per_line = src_image -> bytes_per_line; + + unsigned char *end_of_line = (unsigned char *) (src_pixel + bytes_per_line); + + #ifdef DEBUG + unsigned int counter = 0; + #endif + + for (i = 0; i < src_image -> height; i++ ) + { + while(src_pixel < end_of_line - 2) + { + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] value [0x%x%x%x] red [0x%x] green [0x%x] blue [0x%x].\n", + counter, src_pixel[0], src_pixel[1], src_pixel[2], src_pixel[0] & 0xf8, + src_pixel[1] & 0xf8, src_pixel[2] & 0xf8); + #endif + + if (src_pixel[0] == 0x00 && + src_pixel[1] == 0x00 && + src_pixel[2] == 0x00) + { + *dst_pixel = 0x0; + } + else if (src_pixel[0] == 0xff && + src_pixel[1] == 0xff && + src_pixel[2] == 0xff) + { + *dst_pixel = 0xffff; + } + else + { + /* + * Pixel layout: + * + * 24 bit RRRRR000 GGGGG000 BBBBB000 -> 16 bit 0RRRRRGG GGGBBBBB + */ + + *dst_pixel = ((src_pixel[0] & 0xf8) << 7) | + ((src_pixel[1] & 0xf8) << 2) | + ((src_pixel[2] & 0xf8) >> 3); + } + + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] destination [0x%x].\n", + counter++, *dst_pixel); + #endif + + src_pixel += 3; + dst_pixel += 1; + } + + src_pixel = end_of_line; + end_of_line += bytes_per_line; + } + + return 1; +} + +static int Pack32To8(unsigned int src_data_size, XImage *src_image, XImage *dst_image) +{ + unsigned int *src_pixel = (unsigned int *) src_image -> data; + unsigned char *dst_pixel = (unsigned char *) dst_image -> data; + + #ifdef DEBUG + unsigned int counter = 0; + #endif + + while (src_pixel < ((unsigned int *) (src_image -> data + src_data_size))) + { + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] value [0x%x] red [0x%x] green [0x%x] blue [0x%x].\n", + counter, *src_pixel, (*src_pixel & 0xc00000), + (*src_pixel & 0xc000), (*src_pixel & 0xc0)); + #endif + + if (*src_pixel == 0x0) + { + *dst_pixel = 0x0; + } + else if (*src_pixel == 0xffffff) + { + *dst_pixel = 0xff; + } + else + { + *dst_pixel = ((*src_pixel & 0xc00000) >> 18) | + ((*src_pixel & 0xc000) >> 12) | + ((*src_pixel & 0xc0) >> 6); + } + + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] destination [0x%x].\n", + counter++, *dst_pixel); + #endif + + src_pixel++; + dst_pixel++; + } + + return 1; +} + +static int Pack32To16(unsigned int src_data_size, XImage *src_image, XImage *dst_image) +{ + unsigned int *src_pixel = (unsigned int *) src_image -> data; + unsigned short *dst_pixel = (unsigned short *) dst_image -> data; + + #ifdef DEBUG + unsigned int counter = 0; + #endif + + while (src_pixel < ((unsigned int *) (src_image -> data + src_data_size))) + { + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] value [0x%x] red [0x%x] green [0x%x] blue [0x%x].\n", + counter, *src_pixel, (*src_pixel & 0xf80000), + (*src_pixel & 0xf800), (*src_pixel & 0xf8)); + #endif + + if (*src_pixel == 0x0) + { + *dst_pixel = 0x0; + } + else if (*src_pixel == 0xffffff) + { + *dst_pixel = 0xffff; + } + else + { + *dst_pixel = ((*src_pixel & 0xf80000) >> 9) | + ((*src_pixel & 0xf800) >> 6) | + ((*src_pixel & 0xf8) >> 3); + } + + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] destination [0x%x].\n", + counter++, *dst_pixel); + #endif + + src_pixel++; + dst_pixel++; + } + + return 1; +} + +static int Pack32To24(unsigned int src_data_size, XImage *src_image, XImage *dst_image) +{ + unsigned int *src_pixel = (unsigned int *) src_image -> data; + unsigned char *dst_pixel = (unsigned char *) dst_image -> data; + + #ifdef DEBUG + unsigned int counter = 0; + #endif + + while (src_pixel < ((unsigned int *) (src_image -> data + src_data_size))) + { + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] value [0x%x] red [0x%x] green [0x%x] blue [0x%x].\n", + counter, *src_pixel, ((*src_pixel & 0xff0000) >> 16), + ((*src_pixel & 0x00ff00) >> 8), (*src_pixel & 0xff)); + #endif + + if (*src_pixel == 0x0) + { + dst_pixel[0] = dst_pixel[1] = dst_pixel[2] = 0x0; + } + else if (*src_pixel == 0xffffff) + { + dst_pixel[0] = dst_pixel[1] = dst_pixel[2] = 0xff; + } + else + { + dst_pixel[0] = (*src_pixel & 0xff0000) >> 16; + dst_pixel[1] = (*src_pixel & 0x00ff00) >> 8; + dst_pixel[2] = (*src_pixel & 0x0000ff); + } + + #ifdef DEBUG + fprintf(stderr, "******PackImage: Pixel [%d] destination [0x%x], [0x%x], [0x%x].\n", + counter++, dst_pixel[0], dst_pixel[1], dst_pixel[2]); + #endif + + src_pixel += 1; + dst_pixel += 3; + } + + return 1; +} + +int PackImage(unsigned int method, unsigned int src_data_size, XImage *src_image, + unsigned int dst_data_size, XImage *dst_image) +{ + unsigned int src_bits_per_pixel; + unsigned int dst_bits_per_pixel; + + src_bits_per_pixel = src_image -> bits_per_pixel; + dst_bits_per_pixel = MethodBitsPerPixel(method); + + #ifdef TEST + fprintf(stderr, "******PackImage: Source bits per pixel [%d], destination bits per pixel [%d].\n", + src_bits_per_pixel, dst_bits_per_pixel); + + fprintf(stderr, "******PackImage: Source data size [%d], destination data size [%d].\n", + src_data_size, dst_data_size); + #endif + + if (dst_bits_per_pixel >= src_bits_per_pixel) + { + #ifdef PANIC + fprintf(stderr, "******PackImage: PANIC! Cannot pack image from [%d] to [%d] bytes per pixel.\n", + src_bits_per_pixel, dst_bits_per_pixel); + #endif + + return 0; + } + + switch (src_bits_per_pixel) + { + case 16: + { + switch (dst_bits_per_pixel) + { + case 8: + { + return Pack16To8(src_data_size, src_image, dst_image); + } + default: + { + return 0; + } + } + } + case 24: + { + switch (dst_bits_per_pixel) + { + case 8: + { + return Pack24To8(src_data_size, src_image, dst_image); + } + case 16: + { + return Pack24To16(src_data_size, src_image, dst_image); + } + default: + { + return 0; + } + } + } + case 32: + { + switch (dst_bits_per_pixel) + { + case 8: + { + return Pack32To8(src_data_size, src_image, dst_image); + } + case 16: + { + return Pack32To16(src_data_size, src_image, dst_image); + } + case 24: + { + return Pack32To24(src_data_size, src_image, dst_image); + } + default: + { + return 0; + } + } + } + default: + { + return 0; + } + } +} + +/* + * Replace the ffs() call that may be not + * present on some systems. + */ + +int FindLSB(int word) +{ + int t = word; + + int m = 1; + int i = 0; + + for (; i < sizeof(word) << 3; i++, m <<= 1) + { + if (t & m) + { + return i + 1; + } + } + + return 0; +} + -- cgit v1.2.3