diff options
Diffstat (limited to 'indra/llimage/llimagedxt.cpp')
| -rw-r--r-- | indra/llimage/llimagedxt.cpp | 790 |
1 files changed, 395 insertions, 395 deletions
diff --git a/indra/llimage/llimagedxt.cpp b/indra/llimage/llimagedxt.cpp index 07e44c615c..89299258a6 100644 --- a/indra/llimage/llimagedxt.cpp +++ b/indra/llimage/llimagedxt.cpp @@ -1,24 +1,24 @@ -/** +/** * @file llimagedxt.cpp * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * 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 * $/LicenseInfo$ */ @@ -31,139 +31,139 @@ //static void LLImageDXT::checkMinWidthHeight(EFileFormat format, S32& width, S32& height) { - S32 mindim = (format >= FORMAT_DXT1 && format <= FORMAT_DXR5) ? 4 : 1; - width = llmax(width, mindim); - height = llmax(height, mindim); + S32 mindim = (format >= FORMAT_DXT1 && format <= FORMAT_DXR5) ? 4 : 1; + width = llmax(width, mindim); + height = llmax(height, mindim); } //static S32 LLImageDXT::formatBits(EFileFormat format) { - switch (format) - { - case FORMAT_DXT1: return 4; - case FORMAT_DXR1: return 4; - case FORMAT_I8: return 8; - case FORMAT_A8: return 8; - case FORMAT_DXT3: return 8; - case FORMAT_DXR3: return 8; - case FORMAT_DXR5: return 8; - case FORMAT_DXT5: return 8; - case FORMAT_RGB8: return 24; - case FORMAT_RGBA8: return 32; - default: - LL_ERRS() << "LLImageDXT::Unknown format: " << format << LL_ENDL; - return 0; - } + switch (format) + { + case FORMAT_DXT1: return 4; + case FORMAT_DXR1: return 4; + case FORMAT_I8: return 8; + case FORMAT_A8: return 8; + case FORMAT_DXT3: return 8; + case FORMAT_DXR3: return 8; + case FORMAT_DXR5: return 8; + case FORMAT_DXT5: return 8; + case FORMAT_RGB8: return 24; + case FORMAT_RGBA8: return 32; + default: + LL_ERRS() << "LLImageDXT::Unknown format: " << format << LL_ENDL; + return 0; + } }; //static S32 LLImageDXT::formatBytes(EFileFormat format, S32 width, S32 height) { - checkMinWidthHeight(format, width, height); - S32 bytes = ((width*height*formatBits(format)+7)>>3); - S32 aligned = (bytes+3)&~3; - return aligned; + checkMinWidthHeight(format, width, height); + S32 bytes = ((width*height*formatBits(format)+7)>>3); + S32 aligned = (bytes+3)&~3; + return aligned; } //static S32 LLImageDXT::formatComponents(EFileFormat format) { - switch (format) - { - case FORMAT_DXT1: return 3; - case FORMAT_DXR1: return 3; - case FORMAT_I8: return 1; - case FORMAT_A8: return 1; - case FORMAT_DXT3: return 4; - case FORMAT_DXR3: return 4; - case FORMAT_DXT5: return 4; - case FORMAT_DXR5: return 4; - case FORMAT_RGB8: return 3; - case FORMAT_RGBA8: return 4; - default: - LL_ERRS() << "LLImageDXT::Unknown format: " << format << LL_ENDL; - return 0; - } + switch (format) + { + case FORMAT_DXT1: return 3; + case FORMAT_DXR1: return 3; + case FORMAT_I8: return 1; + case FORMAT_A8: return 1; + case FORMAT_DXT3: return 4; + case FORMAT_DXR3: return 4; + case FORMAT_DXT5: return 4; + case FORMAT_DXR5: return 4; + case FORMAT_RGB8: return 3; + case FORMAT_RGBA8: return 4; + default: + LL_ERRS() << "LLImageDXT::Unknown format: " << format << LL_ENDL; + return 0; + } }; -// static +// static LLImageDXT::EFileFormat LLImageDXT::getFormat(S32 fourcc) { - switch(fourcc) - { - case 0x20203849: return FORMAT_I8; - case 0x20203841: return FORMAT_A8; - case 0x20424752: return FORMAT_RGB8; - case 0x41424752: return FORMAT_RGBA8; - case 0x31525844: return FORMAT_DXR1; - case 0x32525844: return FORMAT_DXR2; - case 0x33525844: return FORMAT_DXR3; - case 0x34525844: return FORMAT_DXR4; - case 0x35525844: return FORMAT_DXR5; - case 0x31545844: return FORMAT_DXT1; - case 0x32545844: return FORMAT_DXT2; - case 0x33545844: return FORMAT_DXT3; - case 0x34545844: return FORMAT_DXT4; - case 0x35545844: return FORMAT_DXT5; - default: return FORMAT_UNKNOWN; - } + switch(fourcc) + { + case 0x20203849: return FORMAT_I8; + case 0x20203841: return FORMAT_A8; + case 0x20424752: return FORMAT_RGB8; + case 0x41424752: return FORMAT_RGBA8; + case 0x31525844: return FORMAT_DXR1; + case 0x32525844: return FORMAT_DXR2; + case 0x33525844: return FORMAT_DXR3; + case 0x34525844: return FORMAT_DXR4; + case 0x35525844: return FORMAT_DXR5; + case 0x31545844: return FORMAT_DXT1; + case 0x32545844: return FORMAT_DXT2; + case 0x33545844: return FORMAT_DXT3; + case 0x34545844: return FORMAT_DXT4; + case 0x35545844: return FORMAT_DXT5; + default: return FORMAT_UNKNOWN; + } } //static S32 LLImageDXT::getFourCC(EFileFormat format) { - switch(format) - { - case FORMAT_I8: return 0x20203849; - case FORMAT_A8: return 0x20203841; - case FORMAT_RGB8: return 0x20424752; - case FORMAT_RGBA8: return 0x41424752; - case FORMAT_DXR1: return 0x31525844; - case FORMAT_DXR2: return 0x32525844; - case FORMAT_DXR3: return 0x33525844; - case FORMAT_DXR4: return 0x34525844; - case FORMAT_DXR5: return 0x35525844; - case FORMAT_DXT1: return 0x31545844; - case FORMAT_DXT2: return 0x32545844; - case FORMAT_DXT3: return 0x33545844; - case FORMAT_DXT4: return 0x34545844; - case FORMAT_DXT5: return 0x35545844; - default: return 0x00000000; - } + switch(format) + { + case FORMAT_I8: return 0x20203849; + case FORMAT_A8: return 0x20203841; + case FORMAT_RGB8: return 0x20424752; + case FORMAT_RGBA8: return 0x41424752; + case FORMAT_DXR1: return 0x31525844; + case FORMAT_DXR2: return 0x32525844; + case FORMAT_DXR3: return 0x33525844; + case FORMAT_DXR4: return 0x34525844; + case FORMAT_DXR5: return 0x35525844; + case FORMAT_DXT1: return 0x31545844; + case FORMAT_DXT2: return 0x32545844; + case FORMAT_DXT3: return 0x33545844; + case FORMAT_DXT4: return 0x34545844; + case FORMAT_DXT5: return 0x35545844; + default: return 0x00000000; + } } //static void LLImageDXT::calcDiscardWidthHeight(S32 discard_level, EFileFormat format, S32& width, S32& height) { - while (discard_level > 0 && width > 1 && height > 1) - { - discard_level--; - width >>= 1; - height >>= 1; - } - checkMinWidthHeight(format, width, height); + while (discard_level > 0 && width > 1 && height > 1) + { + discard_level--; + width >>= 1; + height >>= 1; + } + checkMinWidthHeight(format, width, height); } //static S32 LLImageDXT::calcNumMips(S32 width, S32 height) { - S32 nmips = 0; - while (width > 0 && height > 0) - { - width >>= 1; - height >>= 1; - nmips++; - } - return nmips; + S32 nmips = 0; + while (width > 0 && height > 0) + { + width >>= 1; + height >>= 1; + nmips++; + } + return nmips; } //============================================================================ LLImageDXT::LLImageDXT() - : LLImageFormatted(IMG_CODEC_DXT), - mFileFormat(FORMAT_UNKNOWN), - mHeaderSize(0) + : LLImageFormatted(IMG_CODEC_DXT), + mFileFormat(FORMAT_UNKNOWN), + mHeaderSize(0) { } @@ -174,351 +174,351 @@ LLImageDXT::~LLImageDXT() // virtual bool LLImageDXT::updateData() { - resetLastError(); - - LLImageDataLock lock(this); - - U8* data = getData(); - S32 data_size = getDataSize(); - - if (!data || !data_size) - { - setLastError("LLImageDXT uninitialized"); - return false; - } - - S32 width, height, miplevelmax; - dxtfile_header_t* header = (dxtfile_header_t*)data; - if (header->fourcc != 0x20534444) - { - dxtfile_header_old_t* oldheader = (dxtfile_header_old_t*)header; - mHeaderSize = sizeof(dxtfile_header_old_t); - mFileFormat = EFileFormat(oldheader->format); - miplevelmax = llmin(oldheader->maxlevel,MAX_IMAGE_MIP); - width = oldheader->maxwidth; - height = oldheader->maxheight; - } - else - { - mHeaderSize = sizeof(dxtfile_header_t); - mFileFormat = getFormat(header->pixel_fmt.fourcc); - miplevelmax = llmin(header->num_mips-1,MAX_IMAGE_MIP); - width = header->maxwidth; - height = header->maxheight; - } - - if (data_size < mHeaderSize) - { - LL_ERRS() << "LLImageDXT: not enough data" << LL_ENDL; - } - S32 ncomponents = formatComponents(mFileFormat); - setSize(width, height, ncomponents); - - S32 discard = calcDiscardLevelBytes(data_size); - discard = llmin(discard, miplevelmax); - setDiscardLevel(discard); - - return true; + resetLastError(); + + LLImageDataLock lock(this); + + U8* data = getData(); + S32 data_size = getDataSize(); + + if (!data || !data_size) + { + setLastError("LLImageDXT uninitialized"); + return false; + } + + S32 width, height, miplevelmax; + dxtfile_header_t* header = (dxtfile_header_t*)data; + if (header->fourcc != 0x20534444) + { + dxtfile_header_old_t* oldheader = (dxtfile_header_old_t*)header; + mHeaderSize = sizeof(dxtfile_header_old_t); + mFileFormat = EFileFormat(oldheader->format); + miplevelmax = llmin(oldheader->maxlevel,MAX_IMAGE_MIP); + width = oldheader->maxwidth; + height = oldheader->maxheight; + } + else + { + mHeaderSize = sizeof(dxtfile_header_t); + mFileFormat = getFormat(header->pixel_fmt.fourcc); + miplevelmax = llmin(header->num_mips-1,MAX_IMAGE_MIP); + width = header->maxwidth; + height = header->maxheight; + } + + if (data_size < mHeaderSize) + { + LL_ERRS() << "LLImageDXT: not enough data" << LL_ENDL; + } + S32 ncomponents = formatComponents(mFileFormat); + setSize(width, height, ncomponents); + + S32 discard = calcDiscardLevelBytes(data_size); + discard = llmin(discard, miplevelmax); + setDiscardLevel(discard); + + return true; } // discard: 0 = largest (last) mip S32 LLImageDXT::getMipOffset(S32 discard) { - if (mFileFormat >= FORMAT_DXT1 && mFileFormat <= FORMAT_DXT5) - { - LL_ERRS() << "getMipOffset called with old (unsupported) format" << LL_ENDL; - } - S32 width = getWidth(), height = getHeight(); - S32 num_mips = calcNumMips(width, height); - discard = llclamp(discard, 0, num_mips-1); - S32 last_mip = num_mips-1-discard; - llassert(mHeaderSize > 0); - S32 offset = mHeaderSize; - for (S32 mipidx = num_mips-1; mipidx >= 0; mipidx--) - { - if (mipidx < last_mip) - { - offset += formatBytes(mFileFormat, width, height); - } - width >>= 1; - height >>= 1; - } - return offset; + if (mFileFormat >= FORMAT_DXT1 && mFileFormat <= FORMAT_DXT5) + { + LL_ERRS() << "getMipOffset called with old (unsupported) format" << LL_ENDL; + } + S32 width = getWidth(), height = getHeight(); + S32 num_mips = calcNumMips(width, height); + discard = llclamp(discard, 0, num_mips-1); + S32 last_mip = num_mips-1-discard; + llassert(mHeaderSize > 0); + S32 offset = mHeaderSize; + for (S32 mipidx = num_mips-1; mipidx >= 0; mipidx--) + { + if (mipidx < last_mip) + { + offset += formatBytes(mFileFormat, width, height); + } + width >>= 1; + height >>= 1; + } + return offset; } void LLImageDXT::setFormat() { - S32 ncomponents = getComponents(); - switch (ncomponents) - { - case 3: mFileFormat = FORMAT_DXR1; break; - case 4: mFileFormat = FORMAT_DXR3; break; - default: LL_ERRS() << "LLImageDXT::setFormat called with ncomponents = " << ncomponents << LL_ENDL; - } - mHeaderSize = calcHeaderSize(); + S32 ncomponents = getComponents(); + switch (ncomponents) + { + case 3: mFileFormat = FORMAT_DXR1; break; + case 4: mFileFormat = FORMAT_DXR3; break; + default: LL_ERRS() << "LLImageDXT::setFormat called with ncomponents = " << ncomponents << LL_ENDL; + } + mHeaderSize = calcHeaderSize(); } - + // virtual bool LLImageDXT::decode(LLImageRaw* raw_image, F32 time) { - // *TODO: Test! This has been tweaked since its intial inception, - // but we don't use it any more! - llassert_always(raw_image); - - if (mFileFormat >= FORMAT_DXT1 && mFileFormat <= FORMAT_DXR5) - { - LL_WARNS() << "Attempt to decode compressed LLImageDXT to Raw (unsupported)" << LL_ENDL; - return false; - } - - LLImageDataSharedLock lockIn(this); - LLImageDataLock lockOut(raw_image); - - S32 width = getWidth(), height = getHeight(); - S32 ncomponents = getComponents(); - U8* data = NULL; - if (mDiscardLevel >= 0) - { - data = getData() + getMipOffset(mDiscardLevel); - calcDiscardWidthHeight(mDiscardLevel, mFileFormat, width, height); - } - else - { - data = getData() + getMipOffset(0); - } - S32 image_size = formatBytes(mFileFormat, width, height); - - if ((!getData()) || (data + image_size > getData() + getDataSize())) - { - setLastError("LLImageDXT trying to decode an image with not enough data!"); - return false; - } - - if (!raw_image->resize(width, height, ncomponents)) - { - setLastError("llImageDXT failed to resize image!"); - return false; - } - memcpy(raw_image->getData(), data, image_size); /* Flawfinder: ignore */ - - return true; + // *TODO: Test! This has been tweaked since its intial inception, + // but we don't use it any more! + llassert_always(raw_image); + + if (mFileFormat >= FORMAT_DXT1 && mFileFormat <= FORMAT_DXR5) + { + LL_WARNS() << "Attempt to decode compressed LLImageDXT to Raw (unsupported)" << LL_ENDL; + return false; + } + + LLImageDataSharedLock lockIn(this); + LLImageDataLock lockOut(raw_image); + + S32 width = getWidth(), height = getHeight(); + S32 ncomponents = getComponents(); + U8* data = NULL; + if (mDiscardLevel >= 0) + { + data = getData() + getMipOffset(mDiscardLevel); + calcDiscardWidthHeight(mDiscardLevel, mFileFormat, width, height); + } + else + { + data = getData() + getMipOffset(0); + } + S32 image_size = formatBytes(mFileFormat, width, height); + + if ((!getData()) || (data + image_size > getData() + getDataSize())) + { + setLastError("LLImageDXT trying to decode an image with not enough data!"); + return false; + } + + if (!raw_image->resize(width, height, ncomponents)) + { + setLastError("llImageDXT failed to resize image!"); + return false; + } + memcpy(raw_image->getData(), data, image_size); /* Flawfinder: ignore */ + + return true; } bool LLImageDXT::getMipData(LLPointer<LLImageRaw>& raw, S32 discard) { - if (discard < 0) - { - discard = mDiscardLevel; - } - else if (discard < mDiscardLevel) - { - LL_ERRS() << "Request for invalid discard level" << LL_ENDL; - } - - LLImageDataSharedLock lock(this); - - U8* data = getData() + getMipOffset(discard); - S32 width = 0; - S32 height = 0; - calcDiscardWidthHeight(discard, mFileFormat, width, height); - raw = new LLImageRaw(data, width, height, getComponents()); - return true; + if (discard < 0) + { + discard = mDiscardLevel; + } + else if (discard < mDiscardLevel) + { + LL_ERRS() << "Request for invalid discard level" << LL_ENDL; + } + + LLImageDataSharedLock lock(this); + + U8* data = getData() + getMipOffset(discard); + S32 width = 0; + S32 height = 0; + calcDiscardWidthHeight(discard, mFileFormat, width, height); + raw = new LLImageRaw(data, width, height, getComponents()); + return true; } bool LLImageDXT::encodeDXT(const LLImageRaw* raw_image, F32 time, bool explicit_mips) { - llassert_always(raw_image); - - S32 ncomponents = raw_image->getComponents(); - EFileFormat format; - switch (ncomponents) - { - case 1: - format = FORMAT_A8; - break; - case 3: - format = FORMAT_RGB8; - break; - case 4: - format = FORMAT_RGBA8; - break; - default: - LL_ERRS() << "LLImageDXT::encode: Unhandled channel number: " << ncomponents << LL_ENDL; - return 0; - } - - LLImageDataLock lock(this); - - S32 width = raw_image->getWidth(); - S32 height = raw_image->getHeight(); - - if (explicit_mips) - { - height = (height/3)*2; - } - - setSize(width, height, ncomponents); - mHeaderSize = sizeof(dxtfile_header_t); - mFileFormat = format; - - S32 nmips = calcNumMips(width, height); - S32 w = width; - S32 h = height; - - S32 totbytes = mHeaderSize; - for (S32 mip=0; mip<nmips; mip++) - { - totbytes += formatBytes(format,w,h); - w >>= 1; - h >>= 1; - } - - allocateData(totbytes); - - U8* data = getData(); - dxtfile_header_t* header = (dxtfile_header_t*)data; - llassert(mHeaderSize > 0); - memset(header, 0, mHeaderSize); - header->fourcc = 0x20534444; - header->pixel_fmt.fourcc = getFourCC(format); - header->num_mips = nmips; - header->maxwidth = width; - header->maxheight = height; - - U8* prev_mipdata = 0; - w = width, h = height; - for (S32 mip=0; mip<nmips; mip++) - { - U8* mipdata = data + getMipOffset(mip); - S32 bytes = formatBytes(format, w, h); - if (mip==0) - { - memcpy(mipdata, raw_image->getData(), bytes); /* Flawfinder: ignore */ - } - else if (explicit_mips) - { - extractMip(raw_image->getData(), mipdata, width, height, w, h, format); - } - else - { - generateMip(prev_mipdata, mipdata, w, h, ncomponents); - } - w >>= 1; - h >>= 1; - checkMinWidthHeight(format, w, h); - prev_mipdata = mipdata; - } - - return true; + llassert_always(raw_image); + + S32 ncomponents = raw_image->getComponents(); + EFileFormat format; + switch (ncomponents) + { + case 1: + format = FORMAT_A8; + break; + case 3: + format = FORMAT_RGB8; + break; + case 4: + format = FORMAT_RGBA8; + break; + default: + LL_ERRS() << "LLImageDXT::encode: Unhandled channel number: " << ncomponents << LL_ENDL; + return 0; + } + + LLImageDataLock lock(this); + + S32 width = raw_image->getWidth(); + S32 height = raw_image->getHeight(); + + if (explicit_mips) + { + height = (height/3)*2; + } + + setSize(width, height, ncomponents); + mHeaderSize = sizeof(dxtfile_header_t); + mFileFormat = format; + + S32 nmips = calcNumMips(width, height); + S32 w = width; + S32 h = height; + + S32 totbytes = mHeaderSize; + for (S32 mip=0; mip<nmips; mip++) + { + totbytes += formatBytes(format,w,h); + w >>= 1; + h >>= 1; + } + + allocateData(totbytes); + + U8* data = getData(); + dxtfile_header_t* header = (dxtfile_header_t*)data; + llassert(mHeaderSize > 0); + memset(header, 0, mHeaderSize); + header->fourcc = 0x20534444; + header->pixel_fmt.fourcc = getFourCC(format); + header->num_mips = nmips; + header->maxwidth = width; + header->maxheight = height; + + U8* prev_mipdata = 0; + w = width, h = height; + for (S32 mip=0; mip<nmips; mip++) + { + U8* mipdata = data + getMipOffset(mip); + S32 bytes = formatBytes(format, w, h); + if (mip==0) + { + memcpy(mipdata, raw_image->getData(), bytes); /* Flawfinder: ignore */ + } + else if (explicit_mips) + { + extractMip(raw_image->getData(), mipdata, width, height, w, h, format); + } + else + { + generateMip(prev_mipdata, mipdata, w, h, ncomponents); + } + w >>= 1; + h >>= 1; + checkMinWidthHeight(format, w, h); + prev_mipdata = mipdata; + } + + return true; } // virtual bool LLImageDXT::encode(const LLImageRaw* raw_image, F32 time) { - return encodeDXT(raw_image, time, false); + return encodeDXT(raw_image, time, false); } // virtual bool LLImageDXT::convertToDXR() { - EFileFormat newformat = FORMAT_UNKNOWN; - switch (mFileFormat) - { - case FORMAT_DXR1: - case FORMAT_DXR2: - case FORMAT_DXR3: - case FORMAT_DXR4: - case FORMAT_DXR5: - return false; // nothing to do - case FORMAT_DXT1: newformat = FORMAT_DXR1; break; - case FORMAT_DXT2: newformat = FORMAT_DXR2; break; - case FORMAT_DXT3: newformat = FORMAT_DXR3; break; - case FORMAT_DXT4: newformat = FORMAT_DXR4; break; - case FORMAT_DXT5: newformat = FORMAT_DXR5; break; - default: - LL_WARNS() << "convertToDXR: can not convert format: " << llformat("0x%08x",getFourCC(mFileFormat)) << LL_ENDL; - return false; - } - mFileFormat = newformat; - - LLImageDataLock lock(this); - - S32 width = getWidth(), height = getHeight(); - S32 nmips = calcNumMips(width,height); - S32 total_bytes = getDataSize(); - U8* olddata = getData(); - U8* newdata = (U8*)ll_aligned_malloc_16(total_bytes); - if (!newdata) - { + EFileFormat newformat = FORMAT_UNKNOWN; + switch (mFileFormat) + { + case FORMAT_DXR1: + case FORMAT_DXR2: + case FORMAT_DXR3: + case FORMAT_DXR4: + case FORMAT_DXR5: + return false; // nothing to do + case FORMAT_DXT1: newformat = FORMAT_DXR1; break; + case FORMAT_DXT2: newformat = FORMAT_DXR2; break; + case FORMAT_DXT3: newformat = FORMAT_DXR3; break; + case FORMAT_DXT4: newformat = FORMAT_DXR4; break; + case FORMAT_DXT5: newformat = FORMAT_DXR5; break; + default: + LL_WARNS() << "convertToDXR: can not convert format: " << llformat("0x%08x",getFourCC(mFileFormat)) << LL_ENDL; + return false; + } + mFileFormat = newformat; + + LLImageDataLock lock(this); + + S32 width = getWidth(), height = getHeight(); + S32 nmips = calcNumMips(width,height); + S32 total_bytes = getDataSize(); + U8* olddata = getData(); + U8* newdata = (U8*)ll_aligned_malloc_16(total_bytes); + if (!newdata) + { LLError::LLUserWarningMsg::showOutOfMemory(); - LL_ERRS() << "Out of memory in LLImageDXT::convertToDXR()" << LL_ENDL; - return false; - } - llassert(total_bytes > 0); - memset(newdata, 0, total_bytes); - memcpy(newdata, olddata, mHeaderSize); /* Flawfinder: ignore */ - for (S32 mip=0; mip<nmips; mip++) - { - S32 bytes = formatBytes(mFileFormat, width, height); - S32 newoffset = getMipOffset(mip); - S32 oldoffset = mHeaderSize + (total_bytes - newoffset - bytes); - memcpy(newdata + newoffset, olddata + oldoffset, bytes); /* Flawfinder: ignore */ - width >>= 1; - height >>= 1; - } - dxtfile_header_t* header = (dxtfile_header_t*)newdata; - header->pixel_fmt.fourcc = getFourCC(newformat); - setData(newdata, total_bytes); - updateData(); - return true; + LL_ERRS() << "Out of memory in LLImageDXT::convertToDXR()" << LL_ENDL; + return false; + } + llassert(total_bytes > 0); + memset(newdata, 0, total_bytes); + memcpy(newdata, olddata, mHeaderSize); /* Flawfinder: ignore */ + for (S32 mip=0; mip<nmips; mip++) + { + S32 bytes = formatBytes(mFileFormat, width, height); + S32 newoffset = getMipOffset(mip); + S32 oldoffset = mHeaderSize + (total_bytes - newoffset - bytes); + memcpy(newdata + newoffset, olddata + oldoffset, bytes); /* Flawfinder: ignore */ + width >>= 1; + height >>= 1; + } + dxtfile_header_t* header = (dxtfile_header_t*)newdata; + header->pixel_fmt.fourcc = getFourCC(newformat); + setData(newdata, total_bytes); + updateData(); + return true; } // virtual S32 LLImageDXT::calcHeaderSize() { - return llmax(sizeof(dxtfile_header_old_t), sizeof(dxtfile_header_t)); + return llmax(sizeof(dxtfile_header_old_t), sizeof(dxtfile_header_t)); } // virtual S32 LLImageDXT::calcDataSize(S32 discard_level) { - if (mFileFormat == FORMAT_UNKNOWN) - { - LL_ERRS() << "calcDataSize called with unloaded LLImageDXT" << LL_ENDL; - return 0; - } - if (discard_level < 0) - { - discard_level = mDiscardLevel; - } - S32 bytes = getMipOffset(discard_level); // size of header + previous mips - S32 w = getWidth() >> discard_level; - S32 h = getHeight() >> discard_level; - bytes += formatBytes(mFileFormat,w,h); - return bytes; + if (mFileFormat == FORMAT_UNKNOWN) + { + LL_ERRS() << "calcDataSize called with unloaded LLImageDXT" << LL_ENDL; + return 0; + } + if (discard_level < 0) + { + discard_level = mDiscardLevel; + } + S32 bytes = getMipOffset(discard_level); // size of header + previous mips + S32 w = getWidth() >> discard_level; + S32 h = getHeight() >> discard_level; + bytes += formatBytes(mFileFormat,w,h); + return bytes; } //============================================================================ //static void LLImageDXT::extractMip(const U8 *indata, U8* mipdata, int width, int height, - int mip_width, int mip_height, EFileFormat format) + int mip_width, int mip_height, EFileFormat format) { - int initial_offset = formatBytes(format, width, height); - int line_width = formatBytes(format, width, 1); - int mip_line_width = formatBytes(format, mip_width, 1); - int line_offset = 0; - - for (int ww=width>>1; ww>mip_width; ww>>=1) - { - line_offset += formatBytes(format, ww, 1); - } - - for (int h=0;h<mip_height;++h) - { - int start_offset = initial_offset + line_width * h + line_offset; - memcpy(mipdata + mip_line_width*h, indata + start_offset, mip_line_width); /* Flawfinder: ignore */ - } + int initial_offset = formatBytes(format, width, height); + int line_width = formatBytes(format, width, 1); + int mip_line_width = formatBytes(format, mip_width, 1); + int line_offset = 0; + + for (int ww=width>>1; ww>mip_width; ww>>=1) + { + line_offset += formatBytes(format, ww, 1); + } + + for (int h=0;h<mip_height;++h) + { + int start_offset = initial_offset + line_width * h + line_offset; + memcpy(mipdata + mip_line_width*h, indata + start_offset, mip_line_width); /* Flawfinder: ignore */ + } } //============================================================================ |