3ab68cf563
This, in combination with the existing jpeg_skip_scanlines() function, provides the ability to crop the image both horizontally and vertically while decompressing (certain restrictions apply-- see libjpeg.txt.) This also cleans up the documentation of the line skipping feature and removes the "strip decompression" feature from djpeg, since the new cropping feature is a superset of it. Refer to #34 for discussion. Closes #34
29 lines
788 B
C
29 lines
788 B
C
/*
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* jdmaster.h
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*
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* This file was part of the Independent JPEG Group's software:
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* Copyright (C) 1991-1995, Thomas G. Lane.
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* For conditions of distribution and use, see the accompanying README.ijg
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* file.
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*
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* This file contains the master control structure for the JPEG decompressor.
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*/
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/* Private state */
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typedef struct {
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struct jpeg_decomp_master pub; /* public fields */
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int pass_number; /* # of passes completed */
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boolean using_merged_upsample; /* TRUE if using merged upsample/cconvert */
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/* Saved references to initialized quantizer modules,
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* in case we need to switch modes.
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*/
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struct jpeg_color_quantizer *quantizer_1pass;
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struct jpeg_color_quantizer *quantizer_2pass;
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} my_decomp_master;
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typedef my_decomp_master *my_master_ptr;
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