diff options
Diffstat (limited to 'src/Runtime/ogl-runtime/src/runtimerender/resourcemanager/Qt3DSRenderLoadedTextureGIF.cpp')
| m--------- | src/Runtime/ogl-runtime | 0 | ||||
| -rw-r--r-- | src/Runtime/ogl-runtime/src/runtimerender/resourcemanager/Qt3DSRenderLoadedTextureGIF.cpp | 851 |
2 files changed, 0 insertions, 851 deletions
diff --git a/src/Runtime/ogl-runtime b/src/Runtime/ogl-runtime new file mode 160000 +Subproject 2025912174c4cf99270b7439ec3b021e1d089ae diff --git a/src/Runtime/ogl-runtime/src/runtimerender/resourcemanager/Qt3DSRenderLoadedTextureGIF.cpp b/src/Runtime/ogl-runtime/src/runtimerender/resourcemanager/Qt3DSRenderLoadedTextureGIF.cpp deleted file mode 100644 index ece4d3a3..00000000 --- a/src/Runtime/ogl-runtime/src/runtimerender/resourcemanager/Qt3DSRenderLoadedTextureGIF.cpp +++ /dev/null @@ -1,851 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2008-2012 NVIDIA Corporation. -** Copyright (C) 2017 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of Qt 3D Studio. -** -** $QT_BEGIN_LICENSE:GPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3 or (at your option) any later version -** approved by the KDE Free Qt Foundation. The licenses are as published by -** the Free Software Foundation and appearing in the file LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ -// ========================================================== -// GIF Loader and Writer -// -// Design and implementation by -// - Ryan Rubley <ryan@lostreality.org> -// - Raphael Gaquer <raphael.gaquer@alcer.com> -// -// This file is part of FreeImage 3 -// -// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY -// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES -// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE -// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED -// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT -// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY -// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL -// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER -// THIS DISCLAIMER. -// -// Use at your own risk! -// ========================================================== -#ifdef _MSC_VER -#pragma warning(disable : 4786) // identifier was truncated to 'number' characters -#endif - -#include "Qt3DSRenderLoadedTextureFreeImageCompat.h" -#include "EASTL/vector.h" -#include "EASTL/string.h" -// ========================================================== -// Metadata declarations -// ========================================================== - -#define GIF_DISPOSAL_UNSPECIFIED 0 -#define GIF_DISPOSAL_LEAVE 1 -#define GIF_DISPOSAL_BACKGROUND 2 -#define GIF_DISPOSAL_PREVIOUS 3 - -// ========================================================== -// Constant/Typedef declarations -// ========================================================== - -struct GIFinfo -{ - BOOL read; - // only really used when reading - size_t global_color_table_offset; - int global_color_table_size; - BYTE background_color; - eastl::vector<size_t> application_extension_offsets; - eastl::vector<size_t> comment_extension_offsets; - eastl::vector<size_t> graphic_control_extension_offsets; - eastl::vector<size_t> image_descriptor_offsets; - - GIFinfo() - : read(0) - , global_color_table_offset(0) - , global_color_table_size(0) - , background_color(0) - { - } -}; - -struct PageInfo -{ - PageInfo(int d, int l, int t, int w, int h) - { - disposal_method = d; - left = (WORD)l; - top = (WORD)t; - width = (WORD)w; - height = (WORD)h; - } - int disposal_method; - WORD left, top, width, height; -}; - -// GIF defines a max of 12 bits per code -#define MAX_LZW_CODE 4096 - -class StringTable -{ -public: - StringTable(); - ~StringTable(); - void Initialize(int minCodeSize); - BYTE *FillInputBuffer(int len); - void CompressStart(int bpp, int width); - int CompressEnd(BYTE *buf); // 0-4 bytes - bool Compress(BYTE *buf, int *len); - bool Decompress(BYTE *buf, int *len); - void Done(void); - -protected: - bool m_done; - - int m_minCodeSize, m_clearCode, m_endCode, m_nextCode; - - int m_bpp, m_slack; // Compressor information - - int m_prefix; // Compressor state variable - int m_codeSize, m_codeMask; // Compressor/Decompressor state variables - int m_oldCode; // Decompressor state variable - int m_partial, m_partialSize; // Compressor/Decompressor bit buffer - - int firstPixelPassed; // A specific flag that indicates if the first pixel - // of the whole image had already been read - - eastl::string m_strings[MAX_LZW_CODE]; // This is what is really the "string table" data for the - // Decompressor - int *m_strmap; - - // input buffer - BYTE *m_buffer; - int m_bufferSize, m_bufferRealSize, m_bufferPos, m_bufferShift; - - void ClearCompressorTable(void); - void ClearDecompressorTable(void); -}; - -#define GIF_PACKED_LSD_HAVEGCT 0x80 -#define GIF_PACKED_LSD_COLORRES 0x70 -#define GIF_PACKED_LSD_GCTSORTED 0x08 -#define GIF_PACKED_LSD_GCTSIZE 0x07 -#define GIF_PACKED_ID_HAVELCT 0x80 -#define GIF_PACKED_ID_INTERLACED 0x40 -#define GIF_PACKED_ID_LCTSORTED 0x20 -#define GIF_PACKED_ID_RESERVED 0x18 -#define GIF_PACKED_ID_LCTSIZE 0x07 -#define GIF_PACKED_GCE_RESERVED 0xE0 -#define GIF_PACKED_GCE_DISPOSAL 0x1C -#define GIF_PACKED_GCE_WAITINPUT 0x02 -#define GIF_PACKED_GCE_HAVETRANS 0x01 - -#define GIF_BLOCK_IMAGE_DESCRIPTOR 0x2C -#define GIF_BLOCK_EXTENSION 0x21 -#define GIF_BLOCK_TRAILER 0x3B - -#define GIF_EXT_PLAINTEXT 0x01 -#define GIF_EXT_GRAPHIC_CONTROL 0xF9 -#define GIF_EXT_COMMENT 0xFE -#define GIF_EXT_APPLICATION 0xFF - -#define GIF_INTERLACE_PASSES 4 -static int g_GifInterlaceOffset[GIF_INTERLACE_PASSES] = { 0, 4, 2, 1 }; -static int g_GifInterlaceIncrement[GIF_INTERLACE_PASSES] = { 8, 8, 4, 2 }; - -StringTable::StringTable() -{ - m_buffer = NULL; - firstPixelPassed = 0; // Still no pixel read - // Maximum number of entries in the map is MAX_LZW_CODE * 256 - // (aka 2**12 * 2**8 => a 20 bits key) - // This Map could be optmized to only handle MAX_LZW_CODE * 2**(m_bpp) - m_strmap = (int *)new int[1 << 20]; -} - -StringTable::~StringTable() -{ - if (m_buffer != NULL) { - delete[] m_buffer; - } - if (m_strmap != NULL) { - delete[] m_strmap; - m_strmap = NULL; - } -} - -void StringTable::Initialize(int minCodeSize) -{ - m_done = false; - - m_bpp = 8; - m_minCodeSize = minCodeSize; - m_clearCode = 1 << m_minCodeSize; - if (m_clearCode > MAX_LZW_CODE) { - m_clearCode = MAX_LZW_CODE; - } - m_endCode = m_clearCode + 1; - - m_partial = 0; - m_partialSize = 0; - - m_bufferSize = 0; - ClearCompressorTable(); - ClearDecompressorTable(); -} - -BYTE *StringTable::FillInputBuffer(int len) -{ - if (m_buffer == NULL) { - m_buffer = new BYTE[len]; - m_bufferRealSize = len; - } else if (len > m_bufferRealSize) { - delete[] m_buffer; - m_buffer = new BYTE[len]; - m_bufferRealSize = len; - } - m_bufferSize = len; - m_bufferPos = 0; - m_bufferShift = 8 - m_bpp; - return m_buffer; -} - -void StringTable::CompressStart(int bpp, int width) -{ - m_bpp = bpp; - m_slack = (8 - ((width * bpp) % 8)) % 8; - - m_partial |= m_clearCode << m_partialSize; - m_partialSize += m_codeSize; - ClearCompressorTable(); -} - -int StringTable::CompressEnd(BYTE *buf) -{ - int len = 0; - - // output code for remaining prefix - m_partial |= m_prefix << m_partialSize; - m_partialSize += m_codeSize; - while (m_partialSize >= 8) { - *buf++ = (BYTE)m_partial; - m_partial >>= 8; - m_partialSize -= 8; - len++; - } - - // add the end of information code and flush the entire buffer out - m_partial |= m_endCode << m_partialSize; - m_partialSize += m_codeSize; - while (m_partialSize > 0) { - *buf++ = (BYTE)m_partial; - m_partial >>= 8; - m_partialSize -= 8; - len++; - } - - // most this can be is 4 bytes. 7 bits in m_partial to start + 12 for the - // last code + 12 for the end code = 31 bits total. - return len; -} - -bool StringTable::Compress(BYTE *buf, int *len) -{ - if (m_bufferSize == 0 || m_done) { - return false; - } - - int mask = (1 << m_bpp) - 1; - BYTE *bufpos = buf; - while (m_bufferPos < m_bufferSize) { - // get the current pixel value - char ch = (char)((m_buffer[m_bufferPos] >> m_bufferShift) & mask); - - // The next prefix is : - // <the previous LZW code (on 12 bits << 8)> | <the code of the current pixel (on 8 bits)> - int nextprefix = (((m_prefix) << 8) & 0xFFF00) + (ch & 0x000FF); - if (firstPixelPassed) { - - if (m_strmap[nextprefix] > 0) { - m_prefix = m_strmap[nextprefix]; - } else { - m_partial |= m_prefix << m_partialSize; - m_partialSize += m_codeSize; - // grab full bytes for the output buffer - while (m_partialSize >= 8 && bufpos - buf < *len) { - *bufpos++ = (BYTE)m_partial; - m_partial >>= 8; - m_partialSize -= 8; - } - - // add the code to the "table map" - m_strmap[nextprefix] = m_nextCode; - - // increment the next highest valid code, increase the code size - if (m_nextCode == (1 << m_codeSize)) { - m_codeSize++; - } - m_nextCode++; - - // if we're out of codes, restart the string table - if (m_nextCode == MAX_LZW_CODE) { - m_partial |= m_clearCode << m_partialSize; - m_partialSize += m_codeSize; - ClearCompressorTable(); - } - - // Only keep the 8 lowest bits (prevent problems with "negative chars") - m_prefix = ch & 0x000FF; - } - - // increment to the next pixel - if (m_bufferShift > 0 - && !(m_bufferPos + 1 == m_bufferSize && m_bufferShift <= m_slack)) { - m_bufferShift -= m_bpp; - } else { - m_bufferPos++; - m_bufferShift = 8 - m_bpp; - } - - // jump out here if the output buffer is full - if (bufpos - buf == *len) { - return true; - } - - } else { - // Specific behavior for the first pixel of the whole image - - firstPixelPassed = 1; - // Only keep the 8 lowest bits (prevent problems with "negative chars") - m_prefix = ch & 0x000FF; - - // increment to the next pixel - if (m_bufferShift > 0 - && !(m_bufferPos + 1 == m_bufferSize && m_bufferShift <= m_slack)) { - m_bufferShift -= m_bpp; - } else { - m_bufferPos++; - m_bufferShift = 8 - m_bpp; - } - - // jump out here if the output buffer is full - if (bufpos - buf == *len) { - return true; - } - } - } - - m_bufferSize = 0; - *len = (int)(bufpos - buf); - - return true; -} - -bool StringTable::Decompress(BYTE *buf, int *len) -{ - if (m_bufferSize == 0 || m_done) { - return false; - } - - BYTE *bufpos = buf; - for (; m_bufferPos < m_bufferSize; m_bufferPos++) { - m_partial |= (int)m_buffer[m_bufferPos] << m_partialSize; - m_partialSize += 8; - while (m_partialSize >= m_codeSize) { - int code = m_partial & m_codeMask; - m_partial >>= m_codeSize; - m_partialSize -= m_codeSize; - - if (code > m_nextCode || (m_nextCode == MAX_LZW_CODE && code != m_clearCode) - || code == m_endCode) { - m_done = true; - *len = (int)(bufpos - buf); - return true; - } - if (code == m_clearCode) { - ClearDecompressorTable(); - continue; - } - - // add new string to string table, if not the first pass since a clear code - if (m_oldCode != MAX_LZW_CODE) { - m_strings[m_nextCode] = - m_strings[m_oldCode] + m_strings[code == m_nextCode ? m_oldCode : code][0]; - } - - if ((int)m_strings[code].size() > *len - (bufpos - buf)) { - // out of space, stuff the code back in for next time - m_partial <<= m_codeSize; - m_partialSize += m_codeSize; - m_partial |= code; - m_bufferPos++; - *len = (int)(bufpos - buf); - return true; - } - - // output the string into the buffer - memcpy(bufpos, m_strings[code].data(), m_strings[code].size()); - bufpos += m_strings[code].size(); - - // increment the next highest valid code, add a bit to the mask if we need to increase - // the code size - if (m_oldCode != MAX_LZW_CODE && m_nextCode < MAX_LZW_CODE) { - if (++m_nextCode < MAX_LZW_CODE) { - if ((m_nextCode & m_codeMask) == 0) { - m_codeSize++; - m_codeMask |= m_nextCode; - } - } - } - - m_oldCode = code; - } - } - - m_bufferSize = 0; - *len = (int)(bufpos - buf); - - return true; -} - -void StringTable::Done(void) -{ - m_done = true; -} - -void StringTable::ClearCompressorTable(void) -{ - if (m_strmap) { - memset(m_strmap, 0xFF, sizeof(unsigned int) * (1 << 20)); - } - m_nextCode = m_endCode + 1; - - m_prefix = 0; - m_codeSize = m_minCodeSize + 1; -} - -void StringTable::ClearDecompressorTable(void) -{ - for (int i = 0; i < m_clearCode; i++) { - m_strings[i].resize(1); - m_strings[i][0] = (char)i; - } - m_nextCode = m_endCode + 1; - - m_codeSize = m_minCodeSize + 1; - m_codeMask = (1 << m_codeSize) - 1; - m_oldCode = MAX_LZW_CODE; -} - -// ========================================================== -// Plugin Interface -// ========================================================== - -static int s_format_id; - -// ========================================================== -// Plugin Implementation -// ========================================================== - -static BOOL DLL_CALLCONV Validate(FreeImageIO *io, fi_handle handle) -{ - char buf[6]; - if (io->read_proc(buf, 6, 1, handle) < 1) { - return FALSE; - } - - BOOL bResult = FALSE; - if (!strncmp(buf, "GIF", 3)) { - if (buf[3] >= '0' && buf[3] <= '9' && buf[4] >= '0' && buf[4] <= '9' && buf[5] >= 'a' - && buf[5] <= 'z') { - bResult = TRUE; - } - } - - io->seek_proc(handle, -6, SEEK_CUR); - - return bResult; -} - -// ---------------------------------------------------------- - -static void *DLL_CALLCONV Open(FreeImageIO *io, fi_handle handle) -{ - GIFinfo *info = new GIFinfo; - if (info == NULL) { - return NULL; - } - BOOL read = TRUE; - - // 25/02/2008 MDA: Not safe to memset GIFinfo structure with VS 2008 (safe iterators), - // perform initialization in constructor instead. - // memset(info, 0, sizeof(GIFinfo)); - - info->read = read; - try { - // Header - if (!Validate(io, handle)) { - throw "Not a GIF file"; - } - io->seek_proc(handle, 6, SEEK_CUR); - - // Logical Screen Descriptor - io->seek_proc(handle, 4, SEEK_CUR); - BYTE packed; - if (io->read_proc(&packed, 1, 1, handle) < 1) { - throw "EOF reading Logical Screen Descriptor"; - } - if (io->read_proc(&info->background_color, 1, 1, handle) < 1) { - throw "EOF reading Logical Screen Descriptor"; - } - io->seek_proc(handle, 1, SEEK_CUR); - - // Global Color Table - if (packed & GIF_PACKED_LSD_HAVEGCT) { - info->global_color_table_offset = io->tell_proc(handle); - info->global_color_table_size = 2 << (packed & GIF_PACKED_LSD_GCTSIZE); - io->seek_proc(handle, 3 * info->global_color_table_size, SEEK_CUR); - } - - // Scan through all the rest of the blocks, saving offsets - size_t gce_offset = 0; - BYTE block = 0; - while (block != GIF_BLOCK_TRAILER) { - if (io->read_proc(&block, 1, 1, handle) < 1) { - throw "EOF reading blocks"; - } - if (block == GIF_BLOCK_IMAGE_DESCRIPTOR) { - info->image_descriptor_offsets.push_back(io->tell_proc(handle)); - // GCE may be 0, meaning no GCE preceded this ID - info->graphic_control_extension_offsets.push_back(gce_offset); - gce_offset = 0; - - io->seek_proc(handle, 8, SEEK_CUR); - if (io->read_proc(&packed, 1, 1, handle) < 1) { - throw "EOF reading Image Descriptor"; - } - - // Local Color Table - if (packed & GIF_PACKED_ID_HAVELCT) { - io->seek_proc(handle, 3 * (2 << (packed & GIF_PACKED_ID_LCTSIZE)), SEEK_CUR); - } - - // LZW Minimum Code Size - io->seek_proc(handle, 1, SEEK_CUR); - } else if (block == GIF_BLOCK_EXTENSION) { - BYTE ext; - if (io->read_proc(&ext, 1, 1, handle) < 1) { - throw "EOF reading extension"; - } - - if (ext == GIF_EXT_GRAPHIC_CONTROL) { - // overwrite previous offset if more than one GCE found before an ID - gce_offset = io->tell_proc(handle); - } else if (ext == GIF_EXT_COMMENT) { - info->comment_extension_offsets.push_back(io->tell_proc(handle)); - } else if (ext == GIF_EXT_APPLICATION) { - info->application_extension_offsets.push_back(io->tell_proc(handle)); - } - } else if (block == GIF_BLOCK_TRAILER) { - continue; - } else { - throw "Invalid GIF block found"; - } - - // Data Sub-blocks - BYTE len; - if (io->read_proc(&len, 1, 1, handle) < 1) { - throw "EOF reading sub-block"; - } - while (len != 0) { - io->seek_proc(handle, len, SEEK_CUR); - if (io->read_proc(&len, 1, 1, handle) < 1) { - throw "EOF reading sub-block"; - } - } - } - } catch (const char *msg) { - FreeImage_OutputMessageProc(s_format_id, msg, io); - delete info; - return NULL; - } - - return info; -} - -static FIBITMAP *DLL_CALLCONV DoLoadGIF(FreeImageIO *io, fi_handle handle, int flags, void *data) -{ - if (data == NULL) { - return NULL; - } - (void)flags; - GIFinfo *info = (GIFinfo *)data; - - int page = 0; - FIBITMAP *dib = NULL; - try { - bool have_transparent = false, no_local_palette = false, interlaced = false; - int disposal_method = GIF_DISPOSAL_LEAVE, transparent_color = 0; - WORD left, top, width, height; - BYTE packed, b; - WORD w; - - // Image Descriptor - io->seek_proc(handle, (long)info->image_descriptor_offsets[page], SEEK_SET); - io->read_proc(&left, 2, 1, handle); - io->read_proc(&top, 2, 1, handle); - io->read_proc(&width, 2, 1, handle); - io->read_proc(&height, 2, 1, handle); -#ifdef FREEIMAGE_BIGENDIAN - SwapShort(&left); - SwapShort(&top); - SwapShort(&width); - SwapShort(&height); -#endif - io->read_proc(&packed, 1, 1, handle); - interlaced = (packed & GIF_PACKED_ID_INTERLACED) ? true : false; - no_local_palette = (packed & GIF_PACKED_ID_HAVELCT) ? false : true; - - int bpp = 8; - if (!no_local_palette) { - int size = 2 << (packed & GIF_PACKED_ID_LCTSIZE); - if (size <= 2) - bpp = 1; - else if (size <= 16) - bpp = 4; - } else if (info->global_color_table_offset != 0) { - if (info->global_color_table_size <= 2) - bpp = 1; - else if (info->global_color_table_size <= 16) - bpp = 4; - } - dib = FreeImage_Allocate(width, height, bpp, io); - if (dib == NULL) { - throw "DIB allocated failed"; - } - - // Palette - RGBQUAD *pal = FreeImage_GetPalette(dib); - if (!no_local_palette) { - int size = 2 << (packed & GIF_PACKED_ID_LCTSIZE); - - int i = 0; - while (i < size) { - io->read_proc(&pal[i].rgbRed, 1, 1, handle); - io->read_proc(&pal[i].rgbGreen, 1, 1, handle); - io->read_proc(&pal[i].rgbBlue, 1, 1, handle); - i++; - } - } else if (info->global_color_table_offset != 0) { - long pos = io->tell_proc(handle); - io->seek_proc(handle, (long)info->global_color_table_offset, SEEK_SET); - - int i = 0; - while (i < info->global_color_table_size) { - io->read_proc(&pal[i].rgbRed, 1, 1, handle); - io->read_proc(&pal[i].rgbGreen, 1, 1, handle); - io->read_proc(&pal[i].rgbBlue, 1, 1, handle); - i++; - } - - io->seek_proc(handle, pos, SEEK_SET); - } else { - // its legal to have no palette, but we're going to generate *something* - for (int i = 0; i < 256; i++) { - pal[i].rgbRed = (BYTE)i; - pal[i].rgbGreen = (BYTE)i; - pal[i].rgbBlue = (BYTE)i; - } - } - - // LZW Minimum Code Size - io->read_proc(&b, 1, 1, handle); - StringTable *stringtable = new StringTable; - stringtable->Initialize(b); - - // Image Data Sub-blocks - int x = 0, xpos = 0, y = 0, shift = 8 - bpp, mask = (1 << bpp) - 1, interlacepass = 0; - BYTE *scanline = FreeImage_GetScanLine(dib, height - 1); - BYTE buf[4096]; - io->read_proc(&b, 1, 1, handle); - while (b) { - io->read_proc(stringtable->FillInputBuffer(b), b, 1, handle); - int size = sizeof(buf); - while (stringtable->Decompress(buf, &size)) { - for (int i = 0; i < size; i++) { - scanline[xpos] |= (buf[i] & mask) << shift; - if (shift > 0) { - shift -= bpp; - } else { - xpos++; - shift = 8 - bpp; - } - if (++x >= width) { - if (interlaced) { - y += g_GifInterlaceIncrement[interlacepass]; - if (y >= height && ++interlacepass < GIF_INTERLACE_PASSES) { - y = g_GifInterlaceOffset[interlacepass]; - } - } else { - y++; - } - if (y >= height) { - stringtable->Done(); - break; - } - x = xpos = 0; - shift = 8 - bpp; - scanline = FreeImage_GetScanLine(dib, height - y - 1); - } - } - size = sizeof(buf); - } - io->read_proc(&b, 1, 1, handle); - } - - if (page == 0) { - QT3DSU32 idx; - - // Logical Screen Descriptor - io->seek_proc(handle, 6, SEEK_SET); - WORD logicalwidth, logicalheight; - io->read_proc(&logicalwidth, 2, 1, handle); - io->read_proc(&logicalheight, 2, 1, handle); -#ifdef FREEIMAGE_BIGENDIAN - SwapShort(&logicalwidth); - SwapShort(&logicalheight); -#endif - - // Global Color Table - if (info->global_color_table_offset != 0) { - RGBQUAD globalpalette[256]; - io->seek_proc(handle, (long)info->global_color_table_offset, SEEK_SET); - int i = 0; - while (i < info->global_color_table_size) { - io->read_proc(&globalpalette[i].rgbRed, 1, 1, handle); - io->read_proc(&globalpalette[i].rgbGreen, 1, 1, handle); - io->read_proc(&globalpalette[i].rgbBlue, 1, 1, handle); - globalpalette[i].rgbReserved = 0; - i++; - } - // background color - if (info->background_color < info->global_color_table_size) { - FreeImage_SetBackgroundColor(dib, &globalpalette[info->background_color]); - } - } - - // Application Extension - LONG loop = 1; // If no AE with a loop count is found, the default must be 1 - for (idx = 0; idx < info->application_extension_offsets.size(); idx++) { - io->seek_proc(handle, (long)info->application_extension_offsets[idx], SEEK_SET); - io->read_proc(&b, 1, 1, handle); - if (b == 11) { // All AEs start with an 11 byte sub-block to determine what type of - // AE it is - char buf[11]; - io->read_proc(buf, 11, 1, handle); - if (!memcmp(buf, "NETSCAPE2.0", 11) - || !memcmp(buf, "ANIMEXTS1.0", - 11)) { // Not everybody recognizes ANIMEXTS1.0 but it is valid - io->read_proc(&b, 1, 1, handle); - if (b == 3) { // we're supposed to have a 3 byte sub-block now - io->read_proc(&b, 1, 1, - handle); // this should be 0x01 but isn't really important - io->read_proc(&w, 2, 1, handle); -#ifdef FREEIMAGE_BIGENDIAN - SwapShort(&w); -#endif - loop = w; - if (loop > 0) - loop++; - break; - } - } - } - } - } - - // Graphic Control Extension - if (info->graphic_control_extension_offsets[page] != 0) { - io->seek_proc(handle, (long)(info->graphic_control_extension_offsets[page] + 1), - SEEK_SET); - io->read_proc(&packed, 1, 1, handle); - io->read_proc(&w, 2, 1, handle); -#ifdef FREEIMAGE_BIGENDIAN - SwapShort(&w); -#endif - io->read_proc(&b, 1, 1, handle); - have_transparent = (packed & GIF_PACKED_GCE_HAVETRANS) ? true : false; - disposal_method = (packed & GIF_PACKED_GCE_DISPOSAL) >> 2; - - transparent_color = b; - if (have_transparent) { - int size = 1 << bpp; - if (transparent_color <= size) { - BYTE table[256]; - memset(table, 0xFF, size); - table[transparent_color] = 0; - FreeImage_SetTransparencyTable(dib, table, size); - dib->m_TransparentPaletteIndex = b; - } - } - } - b = (BYTE)disposal_method; - - delete stringtable; - - } catch (const char *msg) { - if (dib != NULL) { - FreeImage_Unload(dib); - } - FreeImage_OutputMessageProc(s_format_id, msg, io); - return NULL; - } - - return dib; -} - -static void DLL_CALLCONV Close(void *data) -{ - if (data == NULL) { - return; - } - GIFinfo *info = (GIFinfo *)data; - delete info; -} - -SLoadedTexture *SLoadedTexture::LoadGIF(ISeekableIOStream &inStream, bool inFlipY, - NVFoundationBase &inFnd, - qt3ds::render::NVRenderContextType renderContextType) -{ - Q_UNUSED(renderContextType) - FreeImageIO theIO(inFnd.getAllocator(), inFnd); - void *gifData = Open(&theIO, &inStream); - if (gifData) { - SLoadedTexture *retval = DoLoadGIF(&theIO, &inStream, 0, gifData); - Close(gifData); - if (retval) - retval->FreeImagePostProcess(inFlipY); - return retval; - } - return NULL; -} |