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Diffstat (limited to 'libavcodec/snow.h')
-rw-r--r-- | libavcodec/snow.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/libavcodec/snow.h b/libavcodec/snow.h new file mode 100644 index 0000000000..11fd15a295 --- /dev/null +++ b/libavcodec/snow.h @@ -0,0 +1,123 @@ +/* + * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at> + * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net> + * + * This library 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 of the License, or (at your option) any later version. + * + * This library 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 this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _SNOW_H +#define _SNOW_H + +#include "dsputil.h" + +#define MID_STATE 128 + +#define MAX_DECOMPOSITIONS 8 +#define MAX_PLANES 4 +#define QSHIFT 5 +#define QROOT (1<<QSHIFT) +#define LOSSLESS_QLOG -128 +#define FRAC_BITS 8 + +#define LOG2_OBMC_MAX 6 +#define OBMC_MAX (1<<(LOG2_OBMC_MAX)) + +/** Used to minimize the amount of memory used in order to optimize cache performance. **/ +struct slice_buffer_s { + DWTELEM * * line; ///< For use by idwt and predict_slices. + DWTELEM * * data_stack; ///< Used for internal purposes. + int data_stack_top; + int line_count; + int line_width; + int data_count; + DWTELEM * base_buffer; ///< Buffer that this structure is caching. +}; + +#define liftS lift +#define lift5 lift +#if 1 +#define W_AM 3 +#define W_AO 0 +#define W_AS 1 + +#undef liftS +#define W_BM 1 +#define W_BO 8 +#define W_BS 4 + +#define W_CM 1 +#define W_CO 0 +#define W_CS 0 + +#define W_DM 3 +#define W_DO 4 +#define W_DS 3 +#elif 0 +#define W_AM 55 +#define W_AO 16 +#define W_AS 5 + +#define W_BM 3 +#define W_BO 32 +#define W_BS 6 + +#define W_CM 127 +#define W_CO 64 +#define W_CS 7 + +#define W_DM 7 +#define W_DO 8 +#define W_DS 4 +#elif 0 +#define W_AM 97 +#define W_AO 32 +#define W_AS 6 + +#define W_BM 63 +#define W_BO 512 +#define W_BS 10 + +#define W_CM 13 +#define W_CO 8 +#define W_CS 4 + +#define W_DM 15 +#define W_DO 16 +#define W_DS 5 + +#else + +#define W_AM 203 +#define W_AO 64 +#define W_AS 7 + +#define W_BM 217 +#define W_BO 2048 +#define W_BS 12 + +#define W_CM 113 +#define W_CO 64 +#define W_CS 7 + +#define W_DM 227 +#define W_DO 128 +#define W_DS 9 +#endif + +extern void ff_snow_vertical_compose97i(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWTELEM *b3, DWTELEM *b4, DWTELEM *b5, int width); +extern void ff_snow_horizontal_compose97i(DWTELEM *b, int width); +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); + +#endif |