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50 lines
2.3 KiB
C
50 lines
2.3 KiB
C
//*@@@+++@@@@******************************************************************
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//
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// Copyright © Microsoft Corp.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// • Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// • Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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//*@@@---@@@@******************************************************************
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#ifndef WMI_STRTRANSFORM_H
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#define WMI_STRTRANSFORM_H
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#include "windowsmediaphoto.h"
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#define COMPUTE_CORNER_PRED_DIFF(a, b) (*(a) -= (b))
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#define COMPUTE_CORNER_PRED_ADD(a, b) (*(a) += (b))
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/** 2x2 foward DCT == 2x2 inverse DCT **/
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Void strDCT2x2dn(PixelI *, PixelI *, PixelI *, PixelI *);
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Void strDCT2x2up(PixelI *, PixelI *, PixelI *, PixelI *);
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Void FOURBUTTERFLY_HARDCODED1(PixelI *p);
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/** 2x2 dct of a group of 4**/
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#define FOURBUTTERFLY(p, i00, i01, i02, i03, i10, i11, i12, i13,\
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i20, i21, i22, i23, i30, i31, i32, i33) \
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strDCT2x2dn(&p[i00], &p[i01], &p[i02], &p[i03]); \
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strDCT2x2dn(&p[i10], &p[i11], &p[i12], &p[i13]); \
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strDCT2x2dn(&p[i20], &p[i21], &p[i22], &p[i23]); \
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strDCT2x2dn(&p[i30], &p[i31], &p[i32], &p[i33])
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#endif // WMI_STRTRANSFORM_H
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