-/*******************************************************************************
-
- Copyright (c) 2009, Charles McGarvey
- All rights reserved.
-
- 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.
-
- 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 COPYRIGHT HOLDER 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.
-
-*******************************************************************************/
+/*] Copyright (c) 2009-2010, Charles McGarvey [**************************
+**] All rights reserved.
+*
+* vi:ts=4 sw=4 tw=75
+*
+* Distributable under the terms and conditions of the 2-clause BSD license;
+* see the file COPYING for a complete text of the license.
+*
+**************************************************************************/
#include <cstdio> // FILE
#include <cstring> // strncmp
#include <boost/algorithm/string.hpp>
-#include <SDL/SDL.h>
#include <png.h>
+#include <SDL/SDL.h>
-#include "Core.hh"
+#include "Backend.hh"
#include "Error.hh"
#include "Image.hh"
#include "Log.hh"
}
- bool init(const std::string& name, bool flipped = false)
+ void init(const std::string& name, bool flipped = false)
{
- std::string path = Image::getPath(name);
+ std::string path(name);
- logInfo << "opening image file " << path << std::endl;
- FILE* fp = fopen(path.c_str(), "rb");
- if (!fp) return false;
+ FILE* fp = Image::openFile(path);
+ if (!fp) return;
png_byte signature[8];
size_t bytesRead;
png_textp texts = 0;
int numTexts;
- logInfo("checking signature...");
bytesRead = fread(signature, 1, sizeof(signature), fp);
- logInfo << "reading " << bytesRead << " bytes of signature" << std::endl;
if (bytesRead < sizeof(signature) ||
png_sig_cmp(signature, 0, sizeof(signature)) != 0) goto cleanup;
- logInfo("creating png structures...");
pngObj = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
if (!pngObj) goto cleanup;
pngInfoEnd = png_create_info_struct(pngObj);
if (!pngInfoEnd) goto cleanup;
- logInfo("setting up long jump...");
if (setjmp(png_jmpbuf(pngObj))) goto cleanup;
png_init_io(pngObj, fp);
png_read_info(pngObj, pngInfo);
bpp = png_get_bit_depth(pngObj, pngInfo);
- logInfo << "texture bpp: " << bpp << std::endl;
colors = png_get_color_type(pngObj, pngInfo);
switch (colors)
{
channels = png_get_channels(pngObj, pngInfo);
mDepth = bpp * channels;
- logInfo << "texture channels: " << channels << std::endl;
if (channels == 3) mColorMode = GL_RGB;
else mColorMode = GL_RGBA;
// read comments
png_get_text(pngObj, pngInfo, &texts, &numTexts);
- logInfo << "num texts: " << numTexts << std::endl;
for (int i = 0; i < numTexts; ++i)
{
if (strncmp(texts[i].key, "TextureInfo", 11) == 0)
{
for (int i = 0; i < height; ++i)
{
- rows[height - 1 - i] = (png_bytep)(mPixels + i * channels * width);
+ rows[height - 1 - i] = (png_bytep)(mPixels +
+ i * channels * width);
}
}
else
cleanup:
- logInfo("cleaning up...");
delete[] rows;
png_destroy_read_struct(pngObj ? &pngObj : 0,
pngInfo ? &pngInfo : 0,
pngInfoEnd ? &pngInfoEnd : 0);
fclose(fp);
-
- return mContext;
}
}
-std::string Image::getPath(const std::string& name)
+bool Image::getPath(std::string& name)
{
- if (boost::find_last(name, ".png"))
- {
- return Resource::getPath(name);
- }
- else
- {
- std::string path("images/");
- path += name;
- path += ".png";
- return Resource::getPath(path);
- }
+ return Resource::getPath(name, "images/", "png");
}
+FILE* Image::openFile(std::string& name)
+{
+ return Resource::openFile(name, "images/", "png");
+}
-} // namespace Mf
-/** vim: set ts=4 sw=4 tw=80: *************************************************/
+} // namespace Mf