-rw-r--r-- | noncore/apps/opie-reader/Palm2QImage.cpp | 74 |
1 files changed, 46 insertions, 28 deletions
diff --git a/noncore/apps/opie-reader/Palm2QImage.cpp b/noncore/apps/opie-reader/Palm2QImage.cpp index ef88cc5..9603877 100644 --- a/noncore/apps/opie-reader/Palm2QImage.cpp +++ b/noncore/apps/opie-reader/Palm2QImage.cpp @@ -1,29 +1,31 @@ /* -*- mode: c; indent-tabs-mode: nil; -*- */ #include <stdio.h> #include <stdlib.h> #include <string.h> -#include <unistd.h> /* for link */ +#ifndef WINDOWS
+#include <unistd.h> /* for link */
+#endif #include <sys/types.h> #include <sys/stat.h> #include <stdarg.h> #include <qimage.h> /***********************************************************************/ /***********************************************************************/ /***** *****/ /***** Code to decode the Palm image format to JPEG *****/ /***** *****/ /***********************************************************************/ /***********************************************************************/ #define READ_BIGENDIAN_SHORT(p) (((p)[0] << 8)|((p)[1])) #define READ_BIGENDIAN_LONG(p) (((p)[0] << 24)|((p)[1] << 16)|((p)[2] << 8)|((p)[3])) #define PALM_IS_COMPRESSED_FLAG 0x8000 #define PALM_HAS_COLORMAP_FLAG 0x4000 #define PALM_HAS_TRANSPARENCY_FLAG 0x2000 #define PALM_DIRECT_COLOR_FLAG 0x0400 #define PALM_4_BYTE_FIELD_FLAG 0x0200 #define PALM_COMPRESSION_SCANLINE 0x00 @@ -118,173 +120,189 @@ static ColorMapEntry Palm4BitColormap[] = { QImage* Palm2QImage (unsigned char *image_bytes_in, int byte_count_in) { unsigned int width, height, bytes_per_row, flags, next_depth_offset; unsigned int bits_per_pixel, version, transparent_index, compression_type, i, j, inval, inbit, mask, incount; unsigned int palm_red_bits, palm_green_bits, palm_blue_bits; unsigned char *palm_ptr, *x_ptr, *imagedata, *inbyte, *rowbuf, *lastrow, *imagedatastart, *palmimage; ColorMapEntry *colormap; palmimage = image_bytes_in; width = READ_BIGENDIAN_SHORT(palmimage + 0); height = READ_BIGENDIAN_SHORT(palmimage + 2); bytes_per_row = READ_BIGENDIAN_SHORT(palmimage + 4); flags = READ_BIGENDIAN_SHORT(palmimage + 6); bits_per_pixel = palmimage[8]; version = palmimage[9]; next_depth_offset = READ_BIGENDIAN_SHORT(palmimage + 10); transparent_index = palmimage[12]; compression_type = palmimage[13]; /* bytes 14 and 15 are reserved by Palm and always 0 */ #if 0 - qDebug ("Palm image is %dx%d, %d bpp, version %d, flags 0x%x, compression %d", - width, height, bits_per_pixel, version, flags, compression_type); +// qDebug ("Palm image is %dx%d, %d bpp, version %d, flags 0x%x, compression %d", width, height, bits_per_pixel, version, flags, compression_type); #endif if (compression_type == PALM_COMPRESSION_PACKBITS) { - qDebug ("Image uses packbits compression; not yet supported"); +// qDebug ("Image uses packbits compression; not yet supported"); return NULL; } else if ((compression_type != PALM_COMPRESSION_NONE) && (compression_type != PALM_COMPRESSION_RLE) && (compression_type != PALM_COMPRESSION_SCANLINE)) { - qDebug ("Image uses unknown compression, code 0x%x", compression_type); +// qDebug ("Image uses unknown compression, code 0x%x", compression_type); return NULL; } /* as of PalmOS 4.0, there are 6 different kinds of Palm pixmaps: 1, 2, or 4 bit grayscale 8-bit StaticColor using the Palm standard colormap 8-bit PseudoColor using a user-specified colormap 16-bit DirectColor using 5 bits for red, 6 for green, and 5 for blue Each of these can be compressed with one of four compression schemes, "RLE", "Scanline", "PackBits", or none. We begin by constructing the colormap. */ if (flags & PALM_HAS_COLORMAP_FLAG) { - qDebug("Palm images with custom colormaps are not currently supported.\n"); +// qDebug("Palm images with custom colormaps are not currently supported.\n"); return NULL; } else if (bits_per_pixel == 1) { colormap = Palm1BitColormap; imagedatastart = palmimage + 16; } else if (bits_per_pixel == 2) { colormap = Palm2BitColormap; imagedatastart = palmimage + 16; } else if (bits_per_pixel == 4) { colormap = Palm4BitColormap; imagedatastart = palmimage + 16; } else if (bits_per_pixel == 8) { colormap = Palm8BitColormap; imagedatastart = palmimage + 16; } else if (bits_per_pixel == 16 && (flags & PALM_DIRECT_COLOR_FLAG)) { colormap = NULL; palm_red_bits = palmimage[16]; palm_green_bits = palmimage[17]; palm_blue_bits = palmimage[18]; +// qDebug("Bits:%d, %d, %d", palm_red_bits, palm_green_bits, palm_blue_bits); if (palm_blue_bits > 8 || palm_green_bits > 8 || palm_red_bits > 8) { - qDebug("Can't handle this format DirectColor image -- too wide in some color (%d:%d:%d)\n", - palm_red_bits, palm_green_bits, palm_blue_bits); +// qDebug("Can't handle this format DirectColor image -- too wide in some color (%d:%d:%d)\n", palm_red_bits, palm_green_bits, palm_blue_bits); return NULL; } if (bits_per_pixel > (8 * sizeof(unsigned long))) { - qDebug ("Can't handle this format DirectColor image -- too many bits per pixel (%d)\n", - bits_per_pixel); +// qDebug ("Can't handle this format DirectColor image -- too many bits per pixel (%d)\n", bits_per_pixel); return NULL; } imagedatastart = palmimage + 24; } else { - qDebug("Unknown bits-per-pixel of %d encountered.\n", bits_per_pixel); +// qDebug("Unknown bits-per-pixel of %d encountered.\n", bits_per_pixel); return NULL; } - QImage* qimage = new QImage(width, height, 16); +#ifdef WINDOWS
+ QImage* qimage = new QImage(width, height, 32);
+#else
+ QImage* qimage = new QImage(width, height, 16);
+#endif
/* row by row, uncompress the Palm image and copy it to the JPEG buffer */ rowbuf = new unsigned char[bytes_per_row * width]; lastrow = new unsigned char[bytes_per_row * width]; for (i=0, palm_ptr = imagedatastart , x_ptr = imagedata; i < height; ++i) { +// qDebug("inval:%x palm_ptr:%x x_ptr:%x bpr:%x", inval, palm_ptr, x_ptr, bytes_per_row); /* first, uncompress the Palm image */ if ((flags & PALM_IS_COMPRESSED_FLAG) && (compression_type == PALM_COMPRESSION_RLE)) { for (j = 0; j < bytes_per_row; ) { incount = *palm_ptr++; inval = *palm_ptr++; memset(rowbuf + j, inval, incount); j += incount; } } else if ((flags & PALM_IS_COMPRESSED_FLAG) && (compression_type == PALM_COMPRESSION_SCANLINE)) { for (j = 0; j < bytes_per_row; j += 8) { incount = *palm_ptr++; inval = ((bytes_per_row - j) < 8) ? (bytes_per_row - j) : 8; for (inbit = 0; inbit < inval; inbit += 1) { if (incount & (1 << (7 - inbit))) rowbuf[j + inbit] = *palm_ptr++; else rowbuf[j + inbit] = lastrow[j + inbit]; } } memcpy (lastrow, rowbuf, bytes_per_row); } else if (((flags & PALM_IS_COMPRESSED_FLAG) && - (compression_type == PALM_COMPRESSION_NONE)) || - (flags && PALM_IS_COMPRESSED_FLAG) == 0) { + (compression_type == PALM_COMPRESSION_NONE)) || + ((flags & PALM_IS_COMPRESSED_FLAG) == 0)) + { + memcpy (rowbuf, palm_ptr, bytes_per_row); + palm_ptr += bytes_per_row; + } + else { + qDebug("Case 4"); + qDebug("Is compressed:%s", ((flags & PALM_IS_COMPRESSED_FLAG) == 0) ? "false" : "true"); + qDebug("Has colourmap:%s", ((flags & PALM_HAS_COLORMAP_FLAG) == 0) ? "false" : "true"); + qDebug("Has transparency:%s", ((flags & PALM_HAS_TRANSPARENCY_FLAG) == 0) ? "false" : "true"); + qDebug("Direct colour:%s", ((flags & PALM_DIRECT_COLOR_FLAG) == 0) ? "false" : "true"); + qDebug("four byte field:%s", ((flags & PALM_4_BYTE_FIELD_FLAG) == 0) ? "false" : "true"); memcpy (rowbuf, palm_ptr, bytes_per_row); palm_ptr += bytes_per_row; } - /* next, write it to the GDK bitmap */ if (colormap) { mask = (1 << bits_per_pixel) - 1; for (inbit = 8 - bits_per_pixel, inbyte = rowbuf, j = 0; j < width; ++j) { inval = ((*inbyte) & (mask << inbit)) >> inbit; /* correct for oddity of the 8-bit color Palm pixmap... */ if ((bits_per_pixel == 8) && (inval == 0xFF)) inval = 231; /* now lookup the correct color and set the pixel in the GTK bitmap */ QRgb colour = qRgb(colormap[inval].red, colormap[inval].green, colormap[inval].blue); qimage->setPixel(j, i, colour); if (!inbit) { ++inbyte; inbit = 8 - bits_per_pixel; } else { inbit -= bits_per_pixel; } } } else if (!colormap && bits_per_pixel == 16) { for (inbyte = rowbuf, j = 0; j < width; ++j) { - inval = (inbyte[0] << 8) | inbyte[1]; -#if 0 - qDebug ("pixel is %d,%d (%02x:%02x:%02x)", + inval = ((unsigned short)inbyte[0] << (unsigned short)8) | inbyte[1]; + +/* + qDebug ("pixel is %d,%d (%d:%d:%d)", j, i, - (inval >> (bits_per_pixel - palm_red_bits)) & ((1 << palm_red_bits) - 1), - (inval >> palm_blue_bits) & ((1 << palm_green_bits) - 1), - (inval >> 0) & ((1 << palm_blue_bits) - 1)); -#endif + ((inval >> (bits_per_pixel - palm_red_bits)) & ((1 << palm_red_bits) - 1)) << (8-palm_red_bits), + ((inval >> palm_blue_bits) & ((1 << palm_green_bits) - 1)) << (8-palm_green_bits), + ((inval >> 0) & ((1 << palm_blue_bits) - 1)) << (8-palm_blue_bits)); +*/ QRgb colour = qRgb( - (inval >> (bits_per_pixel - palm_red_bits)) & ((1 << palm_red_bits) - 1), - (inval >> palm_blue_bits) & ((1 << palm_green_bits) - 1), - (inval >> 0) & ((1 << palm_blue_bits) - 1)); + ((inval >> (bits_per_pixel - palm_red_bits)) & ((1 << palm_red_bits) - 1)) << (8-palm_red_bits), + ((inval >> palm_blue_bits) & ((1 << palm_green_bits) - 1)) << (8-palm_green_bits), + ((inval >> 0) & ((1 << palm_blue_bits) - 1)) << (8-palm_blue_bits)); qimage->setPixel(j, i, colour); inbyte += 2; } } } delete [] rowbuf; delete [] lastrow; return qimage; } -QPixmap* hRule(int w, int h, unsigned char r, unsigned char g, unsigned char b) +QImage* hRule(int w, int h, unsigned char r, unsigned char g, unsigned char b) { -// qDebug("hrule [%d, %d]", w, h); +//// qDebug("hrule [%d, %d]", w, h); QPixmap* qimage = new QPixmap(w, h); qimage->fill(QColor(r,g,b)); - return qimage; + QImage* ret = new QImage(qimage->convertToImage()); + delete qimage; + return ret; } |