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561a18d3ba
Patch by Robert Edele, yartrebo <<at>> earthlink <<dot>> net Originally committed as revision 5184 to svn://svn.ffmpeg.org/ffmpeg/trunk
124 lines
2.7 KiB
C
124 lines
2.7 KiB
C
/*
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* Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
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*
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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 of the License, or (at your option) any later version.
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*
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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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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _SNOW_H
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#define _SNOW_H
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#include "dsputil.h"
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#define MID_STATE 128
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#define MAX_DECOMPOSITIONS 8
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#define MAX_PLANES 4
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#define QSHIFT 5
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#define QROOT (1<<QSHIFT)
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#define LOSSLESS_QLOG -128
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#define FRAC_BITS 8
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#define LOG2_OBMC_MAX 8
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#define OBMC_MAX (1<<(LOG2_OBMC_MAX))
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/** Used to minimize the amount of memory used in order to optimize cache performance. **/
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struct slice_buffer_s {
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DWTELEM * * line; ///< For use by idwt and predict_slices.
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DWTELEM * * data_stack; ///< Used for internal purposes.
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int data_stack_top;
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int line_count;
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int line_width;
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int data_count;
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DWTELEM * base_buffer; ///< Buffer that this structure is caching.
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};
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#define liftS lift
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#define lift5 lift
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#if 1
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#define W_AM 3
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#define W_AO 0
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#define W_AS 1
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#undef liftS
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#define W_BM 1
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#define W_BO 8
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#define W_BS 4
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#define W_CM 1
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#define W_CO 0
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#define W_CS 0
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#define W_DM 3
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#define W_DO 4
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#define W_DS 3
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#elif 0
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#define W_AM 55
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#define W_AO 16
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#define W_AS 5
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#define W_BM 3
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#define W_BO 32
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#define W_BS 6
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#define W_CM 127
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#define W_CO 64
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#define W_CS 7
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#define W_DM 7
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#define W_DO 8
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#define W_DS 4
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#elif 0
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#define W_AM 97
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#define W_AO 32
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#define W_AS 6
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#define W_BM 63
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#define W_BO 512
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#define W_BS 10
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#define W_CM 13
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#define W_CO 8
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#define W_CS 4
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#define W_DM 15
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#define W_DO 16
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#define W_DS 5
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#else
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#define W_AM 203
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#define W_AO 64
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#define W_AS 7
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#define W_BM 217
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#define W_BO 2048
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#define W_BS 12
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#define W_CM 113
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#define W_CO 64
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#define W_CS 7
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#define W_DM 227
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#define W_DO 128
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#define W_DS 9
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#endif
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extern void ff_snow_vertical_compose97i(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWTELEM *b3, DWTELEM *b4, DWTELEM *b5, int width);
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extern void ff_snow_horizontal_compose97i(DWTELEM *b, int width);
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extern void ff_snow_inner_add_yblock(uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h, int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8);
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#endif
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