/* * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at> * * 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 Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_SNOW_DWT_H #define AVCODEC_SNOW_DWT_H #include <stddef.h> #include <stdint.h> typedef int DWTELEM; typedef short IDWTELEM; #define MAX_DECOMPOSITIONS 8 typedef struct DWTCompose { IDWTELEM *b0; IDWTELEM *b1; IDWTELEM *b2; IDWTELEM *b3; int y; } DWTCompose; /** Used to minimize the amount of memory used in order to * optimize cache performance. **/ typedef struct slice_buffer_s { IDWTELEM **line; ///< For use by idwt and predict_slices. IDWTELEM **data_stack; ///< Used for internal purposes. int data_stack_top; int line_count; int line_width; int data_count; IDWTELEM *base_buffer; ///< Buffer that this structure is caching. } slice_buffer; struct SnowDWTContext; typedef struct SnowDWTContext { void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width); void (*horizontal_compose97i)(IDWTELEM *b, IDWTELEM *temp, int width); void (*inner_add_yblock)(const 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); } SnowDWTContext; #define DWT_97 0 #define DWT_53 1 #define liftS lift #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 #define slice_buffer_get_line(slice_buf, line_num) \ ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] \ : ff_slice_buffer_load_line((slice_buf), \ (line_num))) int ff_slice_buffer_init(slice_buffer *buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM *base_buffer); void ff_slice_buffer_release(slice_buffer *buf, int line); void ff_slice_buffer_flush(slice_buffer *buf); void ff_slice_buffer_destroy(slice_buffer *buf); IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line); void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width); void ff_snow_horizontal_compose97i(IDWTELEM *b, IDWTELEM *temp, int width); void ff_snow_inner_add_yblock(const 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); int ff_w53_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h); int ff_w97_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h); void ff_spatial_dwt(int *buffer, int *temp, int width, int height, int stride, int type, int decomposition_count); void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer *sb, int width, int height, int stride_line, int type, int decomposition_count); void ff_spatial_idwt_buffered_slice(SnowDWTContext *dsp, DWTCompose *cs, slice_buffer *slice_buf, IDWTELEM *temp, int width, int height, int stride_line, int type, int decomposition_count, int y); void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height, int stride, int type, int decomposition_count); void ff_dwt_init(SnowDWTContext *c); void ff_dwt_init_x86(SnowDWTContext *c); #endif /* AVCODEC_DWT_H */