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Diffstat (limited to 'libavcodec/snow_dwt.h')
| -rw-r--r-- | libavcodec/snow_dwt.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/libavcodec/snow_dwt.h b/libavcodec/snow_dwt.h new file mode 100644 index 0000000..e929189 --- /dev/null +++ b/libavcodec/snow_dwt.h @@ -0,0 +1,127 @@ +/* + * 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 <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, int line_size, int h); +int ff_w97_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, int 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 */ |
