diff options
Diffstat (limited to 'indra/llimage/llimagej2c.cpp')
| -rw-r--r-- | indra/llimage/llimagej2c.cpp | 89 |
1 files changed, 63 insertions, 26 deletions
diff --git a/indra/llimage/llimagej2c.cpp b/indra/llimage/llimagej2c.cpp index 363486fb9c..c8c866b7f2 100644 --- a/indra/llimage/llimagej2c.cpp +++ b/indra/llimage/llimagej2c.cpp @@ -1,31 +1,25 @@ /** * @file llimagej2c.cpp * - * $LicenseInfo:firstyear=2001&license=viewergpl$ - * - * Copyright (c) 2001-2009, Linden Research, Inc. - * + * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * Second Life Viewer Source Code - * The source code in this file ("Source Code") is provided by Linden Lab - * to you under the terms of the GNU General Public License, version 2.0 - * ("GPL"), unless you have obtained a separate licensing agreement - * ("Other License"), formally executed by you and Linden Lab. Terms of - * the GPL can be found in doc/GPL-license.txt in this distribution, or - * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 + * Copyright (C) 2010, Linden Research, Inc. * - * There are special exceptions to the terms and conditions of the GPL as - * it is applied to this Source Code. View the full text of the exception - * in the file doc/FLOSS-exception.txt in this software distribution, or - * online at - * http://secondlifegrid.net/programs/open_source/licensing/flossexception + * 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. * - * By copying, modifying or distributing this software, you acknowledge - * that you have read and understood your obligations described above, - * and agree to abide by those obligations. + * 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. * - * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO - * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, - * COMPLETENESS OR PERFORMANCE. + * 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" @@ -178,8 +172,8 @@ LLImageJ2C::LLImageJ2C() : LLImageFormatted(IMG_CODEC_J2C), mMaxBytes(0), mRawDiscardLevel(-1), mRate(0.0f), - mReversible(FALSE) - + mReversible(FALSE), + mAreaUsedForDataSizeCalcs(0) { //We assume here that if we wanted to create via //a dynamic library that the approriate open calls were made @@ -195,6 +189,12 @@ LLImageJ2C::LLImageJ2C() : LLImageFormatted(IMG_CODEC_J2C), } mImpl = j2cimpl_create_func(); + + // Clear data size table + for( S32 i = 0; i <= MAX_DISCARD_LEVEL; i++) + { // Array size is MAX_DISCARD_LEVEL+1 + mDataSizes[i] = 0; + } } // virtual @@ -277,6 +277,7 @@ BOOL LLImageJ2C::decode(LLImageRaw *raw_imagep, F32 decode_time) } +// Returns TRUE to mean done, whether successful or not. BOOL LLImageJ2C::decodeChannels(LLImageRaw *raw_imagep, F32 decode_time, S32 first_channel, S32 max_channel_count ) { LLMemType mt1(mMemType); @@ -289,7 +290,7 @@ BOOL LLImageJ2C::decodeChannels(LLImageRaw *raw_imagep, F32 decode_time, S32 fir if (!getData() || (getDataSize() < 16)) { setLastError("LLImageJ2C uninitialized"); - res = FALSE; + res = TRUE; // done } else { @@ -342,7 +343,7 @@ BOOL LLImageJ2C::encode(const LLImageRaw *raw_imagep, const char* comment_text, //static S32 LLImageJ2C::calcHeaderSizeJ2C() { - return 600; //2048; // ??? hack... just needs to be >= actual header size... + return FIRST_PACKET_SIZE; // Hack. just needs to be >= actual header size... } //static @@ -367,9 +368,45 @@ S32 LLImageJ2C::calcHeaderSize() return calcHeaderSizeJ2C(); } + +// calcDataSize() returns how many bytes to read +// to load discard_level (including header and higher discard levels) S32 LLImageJ2C::calcDataSize(S32 discard_level) { - return calcDataSizeJ2C(getWidth(), getHeight(), getComponents(), discard_level, mRate); + discard_level = llclamp(discard_level, 0, MAX_DISCARD_LEVEL); + + if ( mAreaUsedForDataSizeCalcs != (getHeight() * getWidth()) + || mDataSizes[0] == 0) + { + mAreaUsedForDataSizeCalcs = getHeight() * getWidth(); + + S32 level = MAX_DISCARD_LEVEL; // Start at the highest discard + while ( level >= 0 ) + { + mDataSizes[level] = calcDataSizeJ2C(getWidth(), getHeight(), getComponents(), level, mRate); + level--; + } + + /* This is technically a more correct way to calculate the size required + for each discard level, since they should include the size needed for + lower levels. Unfortunately, this doesn't work well and will lead to + download stalls. The true correct way is to parse the header. This will + all go away with http textures at some point. + + // Calculate the size for each discard level. Lower levels (higher quality) + // contain the cumulative size of higher levels + S32 total_size = calcHeaderSizeJ2C(); + + S32 level = MAX_DISCARD_LEVEL; // Start at the highest discard + while ( level >= 0 ) + { // Add in this discard level and all before it + total_size += calcDataSizeJ2C(getWidth(), getHeight(), getComponents(), level, mRate); + mDataSizes[level] = total_size; + level--; + } + */ + } + return mDataSizes[discard_level]; } S32 LLImageJ2C::calcDiscardLevelBytes(S32 bytes) |