107 lines
3.6 KiB
C
107 lines
3.6 KiB
C
// Copyright (c) the JPEG XL Project Authors. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//
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// This file contains the C API of the decoder part of the libjpegli library,
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// which is based on the C API of libjpeg, with the function names changed from
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// jpeg_* to jpegli_*, while decompressor object definitions are included
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// directly from jpeglib.h
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//
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// Applications can use the libjpegli library in one of the following ways:
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//
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// (1) Include jpegli/encode.h and/or jpegli/decode.h, update the function
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// names of the API and link against libjpegli.
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//
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// (2) Leave the application code unchanged, but replace the libjpeg.so library
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// with the one built by this project that is API- and ABI-compatible with
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// libjpeg-turbo's version of libjpeg.so.
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#ifndef LIB_JPEGLI_DECODE_H_
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#define LIB_JPEGLI_DECODE_H_
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#include "lib/jpegli/common.h"
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#include "lib/jpegli/types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define jpegli_create_decompress(cinfo) \
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jpegli_CreateDecompress((cinfo), JPEG_LIB_VERSION, \
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(size_t)sizeof(struct jpeg_decompress_struct))
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void jpegli_CreateDecompress(j_decompress_ptr cinfo, int version,
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size_t structsize);
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void jpegli_stdio_src(j_decompress_ptr cinfo, FILE *infile);
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void jpegli_mem_src(j_decompress_ptr cinfo, const unsigned char *inbuffer,
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unsigned long insize /* NOLINT */);
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int jpegli_read_header(j_decompress_ptr cinfo, boolean require_image);
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boolean jpegli_start_decompress(j_decompress_ptr cinfo);
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JDIMENSION jpegli_read_scanlines(j_decompress_ptr cinfo, JSAMPARRAY scanlines,
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JDIMENSION max_lines);
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JDIMENSION jpegli_skip_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines);
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void jpegli_crop_scanline(j_decompress_ptr cinfo, JDIMENSION *xoffset,
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JDIMENSION *width);
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boolean jpegli_finish_decompress(j_decompress_ptr cinfo);
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JDIMENSION jpegli_read_raw_data(j_decompress_ptr cinfo, JSAMPIMAGE data,
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JDIMENSION max_lines);
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jvirt_barray_ptr *jpegli_read_coefficients(j_decompress_ptr cinfo);
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boolean jpegli_has_multiple_scans(j_decompress_ptr cinfo);
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boolean jpegli_start_output(j_decompress_ptr cinfo, int scan_number);
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boolean jpegli_finish_output(j_decompress_ptr cinfo);
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boolean jpegli_input_complete(j_decompress_ptr cinfo);
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int jpegli_consume_input(j_decompress_ptr cinfo);
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#if JPEG_LIB_VERSION >= 80
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void jpegli_core_output_dimensions(j_decompress_ptr cinfo);
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#endif
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void jpegli_calc_output_dimensions(j_decompress_ptr cinfo);
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void jpegli_save_markers(j_decompress_ptr cinfo, int marker_code,
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unsigned int length_limit);
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void jpegli_set_marker_processor(j_decompress_ptr cinfo, int marker_code,
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jpeg_marker_parser_method routine);
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boolean jpegli_resync_to_restart(j_decompress_ptr cinfo, int desired);
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boolean jpegli_read_icc_profile(j_decompress_ptr cinfo, JOCTET **icc_data_ptr,
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unsigned int *icc_data_len);
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void jpegli_abort_decompress(j_decompress_ptr cinfo);
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void jpegli_destroy_decompress(j_decompress_ptr cinfo);
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void jpegli_new_colormap(j_decompress_ptr cinfo);
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//
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// New API functions that are not available in libjpeg
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//
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// NOTE: This part of the API is still experimental and will probably change in
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// the future.
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//
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void jpegli_set_output_format(j_decompress_ptr cinfo, JpegliDataType data_type,
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JpegliEndianness endianness);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // LIB_JPEGLI_DECODE_H_
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