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libavcodec/dwt.h

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00001 /*
00002  * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00021 #ifndef AVCODEC_DWT_H
00022 #define AVCODEC_DWT_H
00023 
00024 #include <stdint.h>
00025 
00026 typedef int DWTELEM;
00027 typedef short IDWTELEM;
00028 
00029 typedef struct {
00030     IDWTELEM *b0;
00031     IDWTELEM *b1;
00032     IDWTELEM *b2;
00033     IDWTELEM *b3;
00034     int y;
00035 } DWTCompose;
00036 
00038 typedef struct slice_buffer_s {
00039     IDWTELEM * * line; 
00040     IDWTELEM * * data_stack; 
00041     int data_stack_top;
00042     int line_count;
00043     int line_width;
00044     int data_count;
00045     IDWTELEM * base_buffer; 
00046 } slice_buffer;
00047 
00048 typedef struct DWTContext {
00049     void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width);
00050     void (*horizontal_compose97i)(IDWTELEM *b, int width);
00051     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);
00052 } DWTContext;
00053 
00054 #define MAX_DECOMPOSITIONS 8
00055 
00056 #define DWT_97 0
00057 #define DWT_53 1
00058 
00059 #define liftS lift
00060 #if 1
00061 #define W_AM 3
00062 #define W_AO 0
00063 #define W_AS 1
00064 
00065 #undef liftS
00066 #define W_BM 1
00067 #define W_BO 8
00068 #define W_BS 4
00069 
00070 #define W_CM 1
00071 #define W_CO 0
00072 #define W_CS 0
00073 
00074 #define W_DM 3
00075 #define W_DO 4
00076 #define W_DS 3
00077 #elif 0
00078 #define W_AM 55
00079 #define W_AO 16
00080 #define W_AS 5
00081 
00082 #define W_BM 3
00083 #define W_BO 32
00084 #define W_BS 6
00085 
00086 #define W_CM 127
00087 #define W_CO 64
00088 #define W_CS 7
00089 
00090 #define W_DM 7
00091 #define W_DO 8
00092 #define W_DS 4
00093 #elif 0
00094 #define W_AM 97
00095 #define W_AO 32
00096 #define W_AS 6
00097 
00098 #define W_BM 63
00099 #define W_BO 512
00100 #define W_BS 10
00101 
00102 #define W_CM 13
00103 #define W_CO 8
00104 #define W_CS 4
00105 
00106 #define W_DM 15
00107 #define W_DO 16
00108 #define W_DS 5
00109 
00110 #else
00111 
00112 #define W_AM 203
00113 #define W_AO 64
00114 #define W_AS 7
00115 
00116 #define W_BM 217
00117 #define W_BO 2048
00118 #define W_BS 12
00119 
00120 #define W_CM 113
00121 #define W_CO 64
00122 #define W_CS 7
00123 
00124 #define W_DM 227
00125 #define W_DO 128
00126 #define W_DS 9
00127 #endif
00128 
00129 #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)))
00130 //#define slice_buffer_get_line(slice_buf, line_num) (ff_slice_buffer_load_line((slice_buf), (line_num)))
00131 
00132 void ff_slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer);
00133 void ff_slice_buffer_release(slice_buffer * buf, int line);
00134 void ff_slice_buffer_flush(slice_buffer * buf);
00135 void ff_slice_buffer_destroy(slice_buffer * buf);
00136 IDWTELEM * ff_slice_buffer_load_line(slice_buffer * buf, int line);
00137 
00138 void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width);
00139 void ff_snow_horizontal_compose97i(IDWTELEM *b, int width);
00140 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);
00141 
00142 int ff_w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
00143 int ff_w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
00144 
00145 void ff_spatial_dwt(int *buffer, int width, int height, int stride, int type, int decomposition_count);
00146 
00147 void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count);
00148 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);
00149 void ff_spatial_idwt_init(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count);
00150 void ff_spatial_idwt_slice(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count, int y);
00151 void ff_spatial_idwt(IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count);
00152 
00153 void ff_dwt_init(DWTContext *c);
00154 void ff_dwt_init_x86(DWTContext *c);
00155 
00156 #endif /* AVCODEC_DWT_H */

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