125 lines
4.6 KiB
C
125 lines
4.6 KiB
C
/*
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* Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav 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 2.1 of the License, or (at your option) any later version.
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*
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* Libav 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 Libav; 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 AVCODEC_DWT_H
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#define AVCODEC_DWT_H
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#include <stdint.h>
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typedef int DWTELEM;
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typedef short IDWTELEM;
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typedef struct DWTCompose {
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IDWTELEM *b0;
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IDWTELEM *b1;
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IDWTELEM *b2;
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IDWTELEM *b3;
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int y;
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} DWTCompose;
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/** Used to minimize the amount of memory used in order to
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* optimize cache performance. **/
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typedef struct slice_buffer_s {
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IDWTELEM **line; ///< For use by idwt and predict_slices.
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IDWTELEM **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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IDWTELEM *base_buffer; ///< Buffer that this structure is caching.
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} slice_buffer;
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typedef struct DWTContext {
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void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
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IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
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int width);
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void (*horizontal_compose97i)(IDWTELEM *b, IDWTELEM *temp, int width);
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void (*inner_add_yblock)(const uint8_t *obmc, const int obmc_stride,
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uint8_t **block, int b_w, int b_h, int src_x,
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int src_y, int src_stride, slice_buffer *sb,
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int add, uint8_t *dst8);
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} DWTContext;
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#define MAX_DECOMPOSITIONS 8
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#define DWT_97 0
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#define DWT_53 1
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#define liftS lift
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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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#define slice_buffer_get_line(slice_buf, line_num) \
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((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] \
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: ff_slice_buffer_load_line((slice_buf), \
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(line_num)))
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int ff_slice_buffer_init(slice_buffer *buf, int line_count,
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int max_allocated_lines, int line_width,
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IDWTELEM *base_buffer);
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void ff_slice_buffer_release(slice_buffer *buf, int line);
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void ff_slice_buffer_flush(slice_buffer *buf);
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void ff_slice_buffer_destroy(slice_buffer *buf);
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IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line);
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void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
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IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
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int width);
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void ff_snow_horizontal_compose97i(IDWTELEM *b, IDWTELEM *temp, int width);
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void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride,
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uint8_t **block, int b_w, int b_h, int src_x,
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int src_y, int src_stride, slice_buffer *sb,
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int add, uint8_t *dst8);
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int ff_w53_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
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int ff_w97_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
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void ff_spatial_dwt(int *buffer, int *temp, int width, int height, int stride,
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int type, int decomposition_count);
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void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer *sb, int width,
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int height, int stride_line, int type,
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int decomposition_count);
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void ff_spatial_idwt_buffered_slice(DWTContext *dsp, DWTCompose *cs,
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slice_buffer *slice_buf, IDWTELEM *temp,
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int width, int height, int stride_line,
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int type, int decomposition_count, int y);
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void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height,
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int stride, int type, int decomposition_count);
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void ff_dwt_init(DWTContext *c);
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void ff_dwt_init_x86(DWTContext *c);
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#endif /* AVCODEC_DWT_H */
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