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Loeffler C., Ligtenberg A., and Moschytz C.S.

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Loeffler C., Ligtenberg A., and Moschytz C.S.: Practical Fast 1D DCT Algorithm with Eleven Multiplications, Proc. ICASSP 1989, 988-991. Horizontal pass is a double 4x4 vector/matrix multiplication, (see also Intel's Application Note 922: http://developer.intel.com/vtune/cbts/strmsimd/922down.htm Copyright (C) 1999 Intel Corporation) More details at http://skal.planet-d.net/coding/dct.html =========== MMX and XMM forward discrete cosine transform =========== Copyright(C) 2001 Peter Ross Originally provided by Intel at AP-922 http://developer.intel.com/vtune/cbts/strmsimd/922down.htm (See more app notes at http://developer.intel.com/vtune/cbts/strmsimd/appnotes.htm) but in a limited edition. New macro implements a column part for precise iDCT The routine precision now satisfies IEEE standard 1180-1990. Copyright(C) 2000-2001 Peter Gubanov Rounding trick Copyright(C) 2000 Michel Lespinasse http://www.elecard.com/peter/idct.html http://www.linuxvideo.org/mpeg2dec/ These examples contain code fragments for first stage iDCT 8x8 (for rows) and first stage DCT 8x8 (for columns) conversion to gcc syntax by Michael Niedermayer This file is part of FFmpeg. FFmpeg is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. FFmpeg is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with FFmpeg; if not, write to the Free 88

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Loeffler C., Ligtenberg A., and Moschytz C.S.:
Practical Fast 1D DCT Algorithm with Eleven Multiplications,
Proc. ICASSP 1989, 988-991.
Horizontal pass is a double 4x4 vector/matrix multiplication,
(see also Intel's Application Note 922:
Copyright (C) 1999 Intel Corporation)
More details at
===========
MMX and XMM forward discrete cosine transform
===========
Copyright(C) 2001 Peter Ross <[email protected]>
Originally provided by Intel at AP-922
(See more app notes at
)
but in a limited edition.
New macro implements a column part for precise iDCT
The routine precision now satisfies IEEE standard 1180-1990.
Copyright(C) 2000-2001 Peter Gubanov <[email protected]>
Rounding trick Copyright(C) 2000 Michel Lespinasse <[email protected]>
These examples contain code fragments for first stage iDCT 8x8
(for rows) and first stage DCT 8x8 (for columns)
conversion to gcc syntax by Michael Niedermayer
======================================================================
This file is part of FFmpeg.
FFmpeg is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later
version.
FFmpeg is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License along with FFmpeg; if not, write to the Free
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