X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=common%2Fimage_pnm.cpp;fp=common%2Fimage_pnm.cpp;h=0000000000000000000000000000000000000000;hb=e7102bf755210f9e215fb048b637dda6bab96334;hp=f9cd05d1fbc7593dafcb6e5bf77d48beb7505a1d;hpb=8e27804d29abfa3a7cd8630aaa3394677c8a3844;p=apitrace diff --git a/common/image_pnm.cpp b/common/image_pnm.cpp deleted file mode 100644 index f9cd05d..0000000 --- a/common/image_pnm.cpp +++ /dev/null @@ -1,163 +0,0 @@ -/************************************************************************** - * - * Copyright 2011 Jose Fonseca - * Copyright 2008-2010 VMware, Inc. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - * - **************************************************************************/ - - -#include -#include -#include -#include - -#include "image.hpp" - - -namespace image { - -/** - * http://en.wikipedia.org/wiki/Netpbm_format - * http://netpbm.sourceforge.net/doc/ppm.html - */ -void -Image::writePNM(std::ostream &os, const char *comment) const { - assert(channels == 1 || channels >= 3); - - os << (channels == 1 ? "P5" : "P6") << "\n"; - if (comment) { - os << "#" << comment << "\n"; - } - os << width << " " << height << "\n"; - os << "255" << "\n"; - - const unsigned char *row; - - if (channels == 1 || channels == 3) { - for (row = start(); row != end(); row += stride()) { - os.write((const char *)row, width*channels); - } - } else { - unsigned char *tmp = new unsigned char[width*3]; - if (channels == 4) { - for (row = start(); row != end(); row += stride()) { - const uint32_t *src = (const uint32_t *)row; - uint32_t *dst = (uint32_t *)tmp; - unsigned x; - for (x = 0; x + 4 <= width; x += 4) { - /* - * It's much faster to access dwords than bytes. - * - * FIXME: Big-endian version. - */ - - uint32_t rgba0 = *src++ & 0xffffff; - uint32_t rgba1 = *src++ & 0xffffff; - uint32_t rgba2 = *src++ & 0xffffff; - uint32_t rgba3 = *src++ & 0xffffff; - uint32_t rgb0 = rgba0 - | (rgba1 << 24); - uint32_t rgb1 = (rgba1 >> 8) - | (rgba2 << 16); - uint32_t rgb2 = (rgba2 >> 16) - | (rgba3 << 8); - *dst++ = rgb0; - *dst++ = rgb1; - *dst++ = rgb2; - } - for (; x < width; ++x) { - tmp[x*3 + 0] = row[x*4 + 0]; - tmp[x*3 + 1] = row[x*4 + 1]; - tmp[x*3 + 2] = row[x*4 + 2]; - } - os.write((const char *)tmp, width*3); - } - } else if (channels == 2) { - for (row = start(); row != end(); row += stride()) { - const unsigned char *src = row; - unsigned char *dst = tmp; - for (unsigned x = 0; x < width; ++x) { - *dst++ = *src++; - *dst++ = *src++; - *dst++ = 0; - } - os.write((const char *)tmp, width*3); - } - } else { - assert(0); - } - delete [] tmp; - } -} - -const char * -readPNMHeader(const char *buffer, size_t bufferSize, unsigned *channels, unsigned *width, unsigned *height) -{ - *channels = 0; - *width = 0; - *height = 0; - - const char *currentBuffer = buffer; - const char *nextBuffer; - - // parse number of channels - int scannedChannels = sscanf(currentBuffer, "P%d\n", channels); - if (scannedChannels != 1) { // validate scanning of channels - // invalid channel line - return buffer; - } - // convert channel token to number of channels - *channels = (*channels == 5) ? 1 : 3; - - // advance past channel line - nextBuffer = (const char *) memchr((const void *) currentBuffer, '\n', bufferSize) + 1; - bufferSize -= nextBuffer - currentBuffer; - currentBuffer = nextBuffer; - - // skip over optional comment - if (*currentBuffer == '#') { - // advance past comment line - nextBuffer = (const char *) memchr((const void *) currentBuffer, '\n', bufferSize) + 1; - bufferSize -= nextBuffer - currentBuffer; - currentBuffer = nextBuffer; - } - - // parse dimensions of image - int scannedDimensions = sscanf(currentBuffer, "%d %d\n", width, height); - if (scannedDimensions != 2) { // validate scanning of dimensions - // invalid dimension line - return buffer; - } - - // advance past dimension line - nextBuffer = (const char *) memchr((const void *) currentBuffer, '\n', bufferSize) + 1; - bufferSize -= nextBuffer - currentBuffer; - currentBuffer = nextBuffer; - - // skip over "255\n" at end of header - nextBuffer = (const char *) memchr((const void *) currentBuffer, '\n', bufferSize) + 1; - - // return start of image data - return nextBuffer; -} - -} /* namespace image */