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105 lines
2.0 KiB
C
105 lines
2.0 KiB
C
/*
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* The Python Imaging Library.
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* $Id$
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*
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* declarations for the IJG JPEG codec interface.
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*
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* Copyright (c) 1995-2001 by Secret Labs AB
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* Copyright (c) 1995-1996 by Fredrik Lundh
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*/
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#include "jpeglib.h"
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#include <setjmp.h>
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typedef struct {
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struct jpeg_error_mgr pub; /* "public" fields */
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jmp_buf setjmp_buffer; /* for return to caller */
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} JPEGERROR;
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/* -------------------------------------------------------------------- */
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/* Decoder */
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typedef struct {
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struct jpeg_source_mgr pub;
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int skip;
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} JPEGSOURCE;
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typedef struct {
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/* CONFIGURATION */
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/* Jpeg file mode (empty if not known) */
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char jpegmode[8+1];
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/* Converter output mode (input to the shuffler). If empty,
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convert conversions are disabled */
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char rawmode[8+1];
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/* If set, trade quality for speed */
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int draft;
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/* Scale factor (1, 2, 4, 8) */
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int scale;
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/* PRIVATE CONTEXT (set by decoder) */
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struct jpeg_decompress_struct cinfo;
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JPEGERROR error;
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JPEGSOURCE source;
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} JPEGSTATE;
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/* -------------------------------------------------------------------- */
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/* Encoder */
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typedef struct {
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struct jpeg_destination_mgr pub;
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/* might add something some other day */
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} JPEGDESTINATION;
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typedef struct {
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/* CONFIGURATION */
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/* Quality (1-100, 0 means default) */
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int quality;
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/* Progressive mode */
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int progressive;
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/* Smoothing factor (1-100, 0 means none) */
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int smooth;
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/* Optimize Huffman tables (slow) */
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int optimize;
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/* Stream type (0=full, 1=tables only, 2=image only) */
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int streamtype;
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/* DPI setting (0=square pixels, otherwide DPI) */
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int xdpi, ydpi;
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/* Chroma Subsampling (-1=default, 0=none, 1=medium, 2=high) */
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int subsampling;
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/* Extra data (to be injected after header) */
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char* extra; int extra_size;
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/* PRIVATE CONTEXT (set by encoder) */
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struct jpeg_compress_struct cinfo;
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JPEGERROR error;
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JPEGDESTINATION destination;
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int extra_offset;
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} JPEGENCODERSTATE;
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