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https://gitlab.uni-freiburg.de/opensourcevdi/spice
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ccbb922d5a
There was an error in how this was encoded in 0.4, which we need to handle. There is still some issues with the old streams as the luminocity handling in 0.4 was not correct.
75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
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/*
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Copyright (C) 2010 Red Hat, Inc.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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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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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _H_MJPEG_DECODER
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#define _H_MJPEG_DECODER
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#include "common.h"
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#ifdef WIN32
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/* We need some hacks to avoid warnings from the jpeg headers */
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#define XMD_H
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#undef FAR
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#endif
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extern "C" {
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#include <jpeglib.h>
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}
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extern "C" {
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void mjpeg_skip_input_data(j_decompress_ptr cinfo, long num_bytes);
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}
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class MJpegDecoder {
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public:
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MJpegDecoder(int width, int height, int stride,
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uint8_t *frame, bool back_compat);
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~MJpegDecoder();
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bool decode_data(uint8_t *data, size_t length);
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private:
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friend void mjpeg_skip_input_data(j_decompress_ptr cinfo, long num_bytes);
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void convert_scanline(void);
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void append_data(uint8_t *data, size_t length);
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struct jpeg_decompress_struct _cinfo;
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struct jpeg_error_mgr _jerr;
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struct jpeg_source_mgr _jsrc;
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uint8_t *_data;
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size_t _data_size;
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size_t _data_start;
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size_t _data_end;
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size_t _extra_skip;
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int _width;
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int _height;
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int _stride;
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uint8_t *_frame;
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bool _back_compat;
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int _y;
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uint8_t *_scanline;
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int _state;
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};
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#endif
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