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+/*
+ * 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(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
+int ff_w97_32_c(void *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 */