97 lines
3.6 KiB
PHP
97 lines
3.6 KiB
PHP
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;;================================================================================================;;
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;;//// jpeg.inc //// (c) diamond, 2008-2009 //////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;; ;;
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;; This file is part of Common development libraries (Libs-Dev). ;;
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;; ;;
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;; Libs-Dev is free software: you can redistribute it and/or modify it under the terms of the GNU ;;
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;; Lesser General Public License as published by the Free Software Foundation, either version 2.1 ;;
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;; of the License, or (at your option) any later version. ;;
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;; ;;
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;; Libs-Dev is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without ;;
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;; even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;;
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;; Lesser General Public License for more details. ;;
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;; ;;
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;; You should have received a copy of the GNU Lesser General Public License along with Libs-Dev. ;;
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;; If not, see <http://www.gnu.org/licenses/>. ;;
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;; ;;
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;;================================================================================================;;
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struct jpeg.work ; working area for JPEG handling
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image dd ?
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; progressive JPEG?
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progressive db ?
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; one component in the scan?
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not_interleaved db ?
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; Adobe YCCK file?
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adobe_ycck db ?
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rb 1
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; parameters for progressive scan
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ScanStart db ?
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ScanEnd db ?
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ApproxPosLow db ?
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ApproxPosHigh db ?
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; restart interval
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restart_interval dd ?
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decoded_MCUs dd ?
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_esp dd ?
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; components information, up to 4 components
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; db ComponentIdentifier, db V, db H, db VFactor, db HFactor, db QuantizationTable
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components rb 4*6
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max_v db ?
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max_h db ?
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cur_rst_marker db ?
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db ?
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huffman_bits dd ?
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block_width dd ?
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block_height dd ?
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block_delta_x dd ?
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block_delta_y dd ?
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cur_block_dx dd ?
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cur_block_dy dd ?
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x_num_blocks dd ?
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y_num_blocks dd ?
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delta_x dd ?
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delta_y dd ?
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pixel_size dd ?
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line_size dd ?
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cur_x dd ?
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cur_y dd ?
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max_x dd ?
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max_y dd ?
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cur_out_ptr dd ?
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dct_buffer dd ?
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dct_buffer_size dd ?
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;ns dd ?
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; +0: db V, db H, db VFactor, db HFactor, dd HIncrement, dd VIncrement,
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; +12: dd QuantizationTable, dd DCTable, dd ACTable,
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; +24: dd width/HFactor, dd width/HFactor-8k, dd HFactor+1-(width%HFactor),
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; +36: dd height/VFactor, dd height/VFactor-8m, dd VFactor+1-(height%VFactor),
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; +48: dw DCPrediction, db ?, db (0 for Y, 80h for Cb,Cr), dd ComponentOffset
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cur_components rb 4*56
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cur_components_end dd ?
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; Fourier coefficients
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dct_coeff rw 64
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; Temporary space for IDCT
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idct_tmp_area rd 64
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; decoded block 8*8
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decoded_data rb 8*8
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; up to 4 quantization tables
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quant_tables rd 4*64
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quant_tables_defined rb 4
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; Huffman tables
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dc_huffman_defined rb 4
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ac_huffman_defined rb 4
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; up to 4 DC Huffman tables
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;dc_huffman rd 4*256*2
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; up to 4 AC Huffman tables
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;ac_huffman rd 4*256*2
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max_hufftable_size = (256 + (9+128)*16)*2
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dc_huffman rb 4*max_hufftable_size
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ac_huffman rb 4*max_hufftable_size
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ends
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