From 05aec7bb87236bf6e7c0f61fb6b20c5c922b49e2 Mon Sep 17 00:00:00 2001 From: Måns Rullgård Date: Sun, 14 Mar 2010 17:50:12 +0000 Subject: Separate DWT from snow and dsputil This moves the DWT functions from snow.c and dsputil.c to a file of their own. A new struct, DWTContext, holds the function pointers previously part of DSPContext. Originally committed as revision 22522 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/dwt.h | 156 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 156 insertions(+) create mode 100644 libavcodec/dwt.h (limited to 'libavcodec/dwt.h') diff --git a/libavcodec/dwt.h b/libavcodec/dwt.h new file mode 100644 index 0000000000..d9a8b16135 --- /dev/null +++ b/libavcodec/dwt.h @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2004-2010 Michael Niedermayer + * + * 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_DWT_H +#define AVCODEC_DWT_H + +#include + +typedef int DWTELEM; +typedef short IDWTELEM; + +typedef struct { + 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; + +typedef struct DWTContext { + void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width); + void (*horizontal_compose97i)(IDWTELEM *b, 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); +} DWTContext; + +#define MAX_DECOMPOSITIONS 8 + +#define DWT_97 0 +#define DWT_53 1 + +#define liftS 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 + +#define slice_buffer_get_line(slice_buf, line_num) ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] : slice_buffer_load_line((slice_buf), (line_num))) +//#define slice_buffer_get_line(slice_buf, line_num) (slice_buffer_load_line((slice_buf), (line_num))) + +void slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer); +void slice_buffer_release(slice_buffer * buf, int line); +void slice_buffer_flush(slice_buffer * buf); +void slice_buffer_destroy(slice_buffer * buf); +IDWTELEM * 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, 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 w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h); +int w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h); + +void ff_spatial_dwt(int *buffer, 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(DWTContext *dsp, DWTCompose *cs, slice_buffer * slice_buf, int width, int height, int stride_line, int type, int decomposition_count, int y); +void ff_spatial_idwt_init(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count); +void ff_spatial_idwt_slice(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count, int y); +void ff_spatial_idwt(IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count); + +void ff_dwt_init(DWTContext *c); +void ff_dwt_init_x86(DWTContext *c); + +#endif /* AVCODEC_DWT_H */ -- cgit v1.2.3