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-rw-r--r--indra/llimage/llimagedimensionsinfo.cpp452
1 files changed, 226 insertions, 226 deletions
diff --git a/indra/llimage/llimagedimensionsinfo.cpp b/indra/llimage/llimagedimensionsinfo.cpp
index c5e4b76012..ec1a8e535d 100644
--- a/indra/llimage/llimagedimensionsinfo.cpp
+++ b/indra/llimage/llimagedimensionsinfo.cpp
@@ -1,226 +1,226 @@
-/**
- * @file llimagedimensionsinfo.cpp
- *
- * $LicenseInfo:firstyear=2002&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
-
-#include "linden_common.h"
-#include "stdtypes.h"
-
-#include "llimagejpeg.h"
-
-#include "llimagedimensionsinfo.h"
-
-// Value is true if one of Libjpeg's functions has encountered an error while working.
-static bool sJpegErrorEncountered = false;
-
-bool LLImageDimensionsInfo::load(const std::string& src_filename,U32 codec)
-{
- clean();
-
- mSrcFilename = src_filename;
-
- S32 file_size = 0;
- apr_status_t s = mInfile.open(src_filename, LL_APR_RB, NULL, &file_size);
-
- if (s != APR_SUCCESS)
- {
- setLastError("Unable to open file for reading", src_filename);
- return false;
- }
-
- if (file_size == 0)
- {
- mWarning = "texture_load_empty_file";
- setLastError("File is empty",src_filename);
- return false;
- }
-
- switch (codec)
- {
- case IMG_CODEC_BMP:
- return getImageDimensionsBmp();
- case IMG_CODEC_TGA:
- return getImageDimensionsTga();
- case IMG_CODEC_JPEG:
- return getImageDimensionsJpeg();
- case IMG_CODEC_PNG:
- return getImageDimensionsPng();
- default:
- return false;
-
- }
-}
-
-
-bool LLImageDimensionsInfo::getImageDimensionsBmp()
-{
- // Make sure the file is long enough.
- const S32 DATA_LEN = 26; // BMP header (14) + DIB header size (4) + width (4) + height (4)
- if (!checkFileLength(DATA_LEN))
- {
- LL_WARNS() << "Premature end of file" << LL_ENDL;
- return false;
- }
-
- // Read BMP signature.
- U8 signature[2];
- mInfile.read((void*)signature, sizeof(signature)/sizeof(signature[0]));
-
- // Make sure this is actually a BMP file.
- // We only support Windows bitmaps (BM), according to LLImageBMP::updateData().
- if (signature[0] != 'B' || signature[1] != 'M')
- {
- LL_WARNS() << "Not a BMP" << LL_ENDL;
- mWarning = "texture_load_format_error";
- return false;
- }
-
- // Read image dimensions.
- mInfile.seek(APR_CUR, 16);
- mWidth = read_reverse_s32();
- mHeight = read_reverse_s32();
-
- return true;
-}
-
-bool LLImageDimensionsInfo::getImageDimensionsTga()
-{
- const S32 TGA_FILE_HEADER_SIZE = 12;
-
- // Make sure the file is long enough.
- if (!checkFileLength(TGA_FILE_HEADER_SIZE + 1 /* width */ + 1 /* height */))
- {
- LL_WARNS() << "Premature end of file" << LL_ENDL;
- return false;
- }
-
- // *TODO: Detect non-TGA files somehow.
- mInfile.seek(APR_CUR,TGA_FILE_HEADER_SIZE);
- mWidth = read_byte() | read_byte() << 8;
- mHeight = read_byte() | read_byte() << 8;
-
- return true;
-}
-
-bool LLImageDimensionsInfo::getImageDimensionsPng()
-{
- const S32 PNG_MAGIC_SIZE = 8;
-
- // Make sure the file is long enough.
- if (!checkFileLength(PNG_MAGIC_SIZE + 8 + sizeof(S32) * 2 /* width, height */))
- {
- LL_WARNS() << "Premature end of file" << LL_ENDL;
- return false;
- }
-
- // Read PNG signature.
- const U8 png_magic[PNG_MAGIC_SIZE] = {0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A};
- U8 signature[PNG_MAGIC_SIZE];
- mInfile.read((void*)signature, PNG_MAGIC_SIZE);
-
- // Make sure it's a PNG file.
- if (memcmp(signature, png_magic, PNG_MAGIC_SIZE) != 0)
- {
- LL_WARNS() << "Not a PNG" << LL_ENDL;
- mWarning = "texture_load_format_error";
- return false;
- }
-
- // Read image dimensions.
- mInfile.seek(APR_CUR, 8 /* chunk length + chunk type */);
- mWidth = read_s32();
- mHeight = read_s32();
-
- return true;
-}
-
-// Called instead of exit() if Libjpeg encounters an error.
-void on_jpeg_error(j_common_ptr cinfo)
-{
- (void) cinfo;
- sJpegErrorEncountered = true;
- LL_WARNS() << "Libjpeg has encountered an error!" << LL_ENDL;
-}
-
-bool LLImageDimensionsInfo::getImageDimensionsJpeg()
-{
- sJpegErrorEncountered = false;
- clean();
- FILE *fp = LLFile::fopen(mSrcFilename, "rb");
- if (fp == NULL)
- {
- setLastError("Unable to open file for reading", mSrcFilename);
- return false;
- }
-
- /* Make sure this is a JPEG file. */
- const size_t JPEG_MAGIC_SIZE = 2;
- const U8 jpeg_magic[JPEG_MAGIC_SIZE] = {0xFF, 0xD8};
- U8 signature[JPEG_MAGIC_SIZE];
-
- if (fread(signature, sizeof(signature), 1, fp) != 1)
- {
- LL_WARNS() << "Premature end of file" << LL_ENDL;
- return false;
- }
- if (memcmp(signature, jpeg_magic, JPEG_MAGIC_SIZE) != 0)
- {
- LL_WARNS() << "Not a JPEG" << LL_ENDL;
- mWarning = "texture_load_format_error";
- return false;
- }
- fseek(fp, 0, SEEK_SET); // go back to start of the file
-
- /* Init jpeg */
- jpeg_error_mgr jerr;
- jpeg_decompress_struct cinfo;
- cinfo.err = jpeg_std_error(&jerr);
- // Call our function instead of exit() if Libjpeg encounters an error.
- // This is done to avoid crash in this case (STORM-472).
- cinfo.err->error_exit = on_jpeg_error;
-
- jpeg_create_decompress (&cinfo);
- jpeg_stdio_src (&cinfo, fp);
- jpeg_read_header (&cinfo, true);
- cinfo.out_color_space = JCS_RGB;
- jpeg_start_decompress (&cinfo);
-
- mWidth = cinfo.output_width;
- mHeight = cinfo.output_height;
-
- jpeg_destroy_decompress(&cinfo);
- fclose(fp);
-
- return !sJpegErrorEncountered;
-}
-
-bool LLImageDimensionsInfo::checkFileLength(S32 min_len)
-{
- // Make sure the file is not shorter than min_len bytes.
- // so that we don't have to check value returned by each read() or seek().
- char* buf = new char[min_len];
- int nread = mInfile.read(buf, min_len);
- delete[] buf;
- mInfile.seek(APR_SET, 0);
- return nread == min_len;
-}
+/**
+ * @file llimagedimensionsinfo.cpp
+ *
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "stdtypes.h"
+
+#include "llimagejpeg.h"
+
+#include "llimagedimensionsinfo.h"
+
+// Value is true if one of Libjpeg's functions has encountered an error while working.
+static bool sJpegErrorEncountered = false;
+
+bool LLImageDimensionsInfo::load(const std::string& src_filename,U32 codec)
+{
+ clean();
+
+ mSrcFilename = src_filename;
+
+ S32 file_size = 0;
+ apr_status_t s = mInfile.open(src_filename, LL_APR_RB, NULL, &file_size);
+
+ if (s != APR_SUCCESS)
+ {
+ setLastError("Unable to open file for reading", src_filename);
+ return false;
+ }
+
+ if (file_size == 0)
+ {
+ mWarning = "texture_load_empty_file";
+ setLastError("File is empty",src_filename);
+ return false;
+ }
+
+ switch (codec)
+ {
+ case IMG_CODEC_BMP:
+ return getImageDimensionsBmp();
+ case IMG_CODEC_TGA:
+ return getImageDimensionsTga();
+ case IMG_CODEC_JPEG:
+ return getImageDimensionsJpeg();
+ case IMG_CODEC_PNG:
+ return getImageDimensionsPng();
+ default:
+ return false;
+
+ }
+}
+
+
+bool LLImageDimensionsInfo::getImageDimensionsBmp()
+{
+ // Make sure the file is long enough.
+ const S32 DATA_LEN = 26; // BMP header (14) + DIB header size (4) + width (4) + height (4)
+ if (!checkFileLength(DATA_LEN))
+ {
+ LL_WARNS() << "Premature end of file" << LL_ENDL;
+ return false;
+ }
+
+ // Read BMP signature.
+ U8 signature[2];
+ mInfile.read((void*)signature, sizeof(signature)/sizeof(signature[0]));
+
+ // Make sure this is actually a BMP file.
+ // We only support Windows bitmaps (BM), according to LLImageBMP::updateData().
+ if (signature[0] != 'B' || signature[1] != 'M')
+ {
+ LL_WARNS() << "Not a BMP" << LL_ENDL;
+ mWarning = "texture_load_format_error";
+ return false;
+ }
+
+ // Read image dimensions.
+ mInfile.seek(APR_CUR, 16);
+ mWidth = read_reverse_s32();
+ mHeight = read_reverse_s32();
+
+ return true;
+}
+
+bool LLImageDimensionsInfo::getImageDimensionsTga()
+{
+ const S32 TGA_FILE_HEADER_SIZE = 12;
+
+ // Make sure the file is long enough.
+ if (!checkFileLength(TGA_FILE_HEADER_SIZE + 1 /* width */ + 1 /* height */))
+ {
+ LL_WARNS() << "Premature end of file" << LL_ENDL;
+ return false;
+ }
+
+ // *TODO: Detect non-TGA files somehow.
+ mInfile.seek(APR_CUR,TGA_FILE_HEADER_SIZE);
+ mWidth = read_byte() | read_byte() << 8;
+ mHeight = read_byte() | read_byte() << 8;
+
+ return true;
+}
+
+bool LLImageDimensionsInfo::getImageDimensionsPng()
+{
+ const S32 PNG_MAGIC_SIZE = 8;
+
+ // Make sure the file is long enough.
+ if (!checkFileLength(PNG_MAGIC_SIZE + 8 + sizeof(S32) * 2 /* width, height */))
+ {
+ LL_WARNS() << "Premature end of file" << LL_ENDL;
+ return false;
+ }
+
+ // Read PNG signature.
+ const U8 png_magic[PNG_MAGIC_SIZE] = {0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A};
+ U8 signature[PNG_MAGIC_SIZE];
+ mInfile.read((void*)signature, PNG_MAGIC_SIZE);
+
+ // Make sure it's a PNG file.
+ if (memcmp(signature, png_magic, PNG_MAGIC_SIZE) != 0)
+ {
+ LL_WARNS() << "Not a PNG" << LL_ENDL;
+ mWarning = "texture_load_format_error";
+ return false;
+ }
+
+ // Read image dimensions.
+ mInfile.seek(APR_CUR, 8 /* chunk length + chunk type */);
+ mWidth = read_s32();
+ mHeight = read_s32();
+
+ return true;
+}
+
+// Called instead of exit() if Libjpeg encounters an error.
+void on_jpeg_error(j_common_ptr cinfo)
+{
+ (void) cinfo;
+ sJpegErrorEncountered = true;
+ LL_WARNS() << "Libjpeg has encountered an error!" << LL_ENDL;
+}
+
+bool LLImageDimensionsInfo::getImageDimensionsJpeg()
+{
+ sJpegErrorEncountered = false;
+ clean();
+ FILE *fp = LLFile::fopen(mSrcFilename, "rb");
+ if (fp == NULL)
+ {
+ setLastError("Unable to open file for reading", mSrcFilename);
+ return false;
+ }
+
+ /* Make sure this is a JPEG file. */
+ const size_t JPEG_MAGIC_SIZE = 2;
+ const U8 jpeg_magic[JPEG_MAGIC_SIZE] = {0xFF, 0xD8};
+ U8 signature[JPEG_MAGIC_SIZE];
+
+ if (fread(signature, sizeof(signature), 1, fp) != 1)
+ {
+ LL_WARNS() << "Premature end of file" << LL_ENDL;
+ return false;
+ }
+ if (memcmp(signature, jpeg_magic, JPEG_MAGIC_SIZE) != 0)
+ {
+ LL_WARNS() << "Not a JPEG" << LL_ENDL;
+ mWarning = "texture_load_format_error";
+ return false;
+ }
+ fseek(fp, 0, SEEK_SET); // go back to start of the file
+
+ /* Init jpeg */
+ jpeg_error_mgr jerr;
+ jpeg_decompress_struct cinfo;
+ cinfo.err = jpeg_std_error(&jerr);
+ // Call our function instead of exit() if Libjpeg encounters an error.
+ // This is done to avoid crash in this case (STORM-472).
+ cinfo.err->error_exit = on_jpeg_error;
+
+ jpeg_create_decompress (&cinfo);
+ jpeg_stdio_src (&cinfo, fp);
+ jpeg_read_header (&cinfo, true);
+ cinfo.out_color_space = JCS_RGB;
+ jpeg_start_decompress (&cinfo);
+
+ mWidth = cinfo.output_width;
+ mHeight = cinfo.output_height;
+
+ jpeg_destroy_decompress(&cinfo);
+ fclose(fp);
+
+ return !sJpegErrorEncountered;
+}
+
+bool LLImageDimensionsInfo::checkFileLength(S32 min_len)
+{
+ // Make sure the file is not shorter than min_len bytes.
+ // so that we don't have to check value returned by each read() or seek().
+ char* buf = new char[min_len];
+ int nread = mInfile.read(buf, min_len);
+ delete[] buf;
+ mInfile.seek(APR_SET, 0);
+ return nread == min_len;
+}
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