866 lines
28 KiB
C
866 lines
28 KiB
C
/*
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* Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (C) 2008 David Conrad
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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#include "libavutil/attributes.h"
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#include "libavutil/avassert.h"
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#include "libavutil/common.h"
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#include "dsputil.h"
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#include "snow_dwt.h"
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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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{
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int i;
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buf->base_buffer = base_buffer;
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buf->line_count = line_count;
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buf->line_width = line_width;
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buf->data_count = max_allocated_lines;
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buf->line = av_mallocz_array(line_count, sizeof(IDWTELEM *));
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if (!buf->line)
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return AVERROR(ENOMEM);
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buf->data_stack = av_malloc_array(max_allocated_lines, sizeof(IDWTELEM *));
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if (!buf->data_stack) {
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av_freep(&buf->line);
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return AVERROR(ENOMEM);
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}
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for (i = 0; i < max_allocated_lines; i++) {
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buf->data_stack[i] = av_malloc_array(line_width, sizeof(IDWTELEM));
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if (!buf->data_stack[i]) {
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for (i--; i >=0; i--)
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av_freep(&buf->data_stack[i]);
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av_freep(&buf->data_stack);
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av_freep(&buf->line);
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return AVERROR(ENOMEM);
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}
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}
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buf->data_stack_top = max_allocated_lines - 1;
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return 0;
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}
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IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line)
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{
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IDWTELEM *buffer;
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av_assert0(buf->data_stack_top >= 0);
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// av_assert1(!buf->line[line]);
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if (buf->line[line])
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return buf->line[line];
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buffer = buf->data_stack[buf->data_stack_top];
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buf->data_stack_top--;
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buf->line[line] = buffer;
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return buffer;
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}
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void ff_slice_buffer_release(slice_buffer *buf, int line)
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{
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IDWTELEM *buffer;
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av_assert1(line >= 0 && line < buf->line_count);
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av_assert1(buf->line[line]);
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buffer = buf->line[line];
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buf->data_stack_top++;
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buf->data_stack[buf->data_stack_top] = buffer;
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buf->line[line] = NULL;
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}
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void ff_slice_buffer_flush(slice_buffer *buf)
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{
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int i;
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for (i = 0; i < buf->line_count; i++)
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if (buf->line[i])
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ff_slice_buffer_release(buf, i);
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}
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void ff_slice_buffer_destroy(slice_buffer *buf)
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{
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int i;
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ff_slice_buffer_flush(buf);
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for (i = buf->data_count - 1; i >= 0; i--)
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av_freep(&buf->data_stack[i]);
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av_freep(&buf->data_stack);
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av_freep(&buf->line);
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}
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static inline int mirror(int v, int m)
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{
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while ((unsigned)v > (unsigned)m) {
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v = -v;
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if (v < 0)
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v += 2 * m;
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}
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return v;
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}
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static av_always_inline void lift(DWTELEM *dst, DWTELEM *src, DWTELEM *ref,
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int dst_step, int src_step, int ref_step,
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int width, int mul, int add, int shift,
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int highpass, int inverse)
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{
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const int mirror_left = !highpass;
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const int mirror_right = (width & 1) ^ highpass;
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const int w = (width >> 1) - 1 + (highpass & width);
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int i;
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#define LIFT(src, ref, inv) ((src) + ((inv) ? -(ref) : +(ref)))
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if (mirror_left) {
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dst[0] = LIFT(src[0], ((mul * 2 * ref[0] + add) >> shift), inverse);
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dst += dst_step;
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src += src_step;
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}
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for (i = 0; i < w; i++)
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dst[i * dst_step] = LIFT(src[i * src_step],
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((mul * (ref[i * ref_step] +
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ref[(i + 1) * ref_step]) +
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add) >> shift),
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inverse);
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if (mirror_right)
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dst[w * dst_step] = LIFT(src[w * src_step],
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((mul * 2 * ref[w * ref_step] + add) >> shift),
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inverse);
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}
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static av_always_inline void liftS(DWTELEM *dst, DWTELEM *src, DWTELEM *ref,
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int dst_step, int src_step, int ref_step,
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int width, int mul, int add, int shift,
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int highpass, int inverse)
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{
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const int mirror_left = !highpass;
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const int mirror_right = (width & 1) ^ highpass;
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const int w = (width >> 1) - 1 + (highpass & width);
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int i;
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av_assert1(shift == 4);
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#define LIFTS(src, ref, inv) \
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((inv) ? (src) + (((ref) + 4 * (src)) >> shift) \
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: -((-16 * (src) + (ref) + add / \
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4 + 1 + (5 << 25)) / (5 * 4) - (1 << 23)))
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if (mirror_left) {
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dst[0] = LIFTS(src[0], mul * 2 * ref[0] + add, inverse);
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dst += dst_step;
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src += src_step;
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}
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for (i = 0; i < w; i++)
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dst[i * dst_step] = LIFTS(src[i * src_step],
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mul * (ref[i * ref_step] +
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ref[(i + 1) * ref_step]) + add,
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inverse);
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if (mirror_right)
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dst[w * dst_step] = LIFTS(src[w * src_step],
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mul * 2 * ref[w * ref_step] + add,
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inverse);
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}
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static void horizontal_decompose53i(DWTELEM *b, DWTELEM *temp, int width)
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{
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const int width2 = width >> 1;
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int x;
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const int w2 = (width + 1) >> 1;
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for (x = 0; x < width2; x++) {
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temp[x] = b[2 * x];
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temp[x + w2] = b[2 * x + 1];
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}
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if (width & 1)
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temp[x] = b[2 * x];
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lift(b + w2, temp + w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 0);
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lift(b, temp, b + w2, 1, 1, 1, width, 1, 2, 2, 0, 0);
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}
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static void vertical_decompose53iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
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int width)
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{
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int i;
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for (i = 0; i < width; i++)
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b1[i] -= (b0[i] + b2[i]) >> 1;
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}
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static void vertical_decompose53iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
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int width)
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{
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int i;
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for (i = 0; i < width; i++)
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b1[i] += (b0[i] + b2[i] + 2) >> 2;
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}
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static void spatial_decompose53i(DWTELEM *buffer, DWTELEM *temp,
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int width, int height, int stride)
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{
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int y;
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DWTELEM *b0 = buffer + mirror(-2 - 1, height - 1) * stride;
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DWTELEM *b1 = buffer + mirror(-2, height - 1) * stride;
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for (y = -2; y < height; y += 2) {
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DWTELEM *b2 = buffer + mirror(y + 1, height - 1) * stride;
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DWTELEM *b3 = buffer + mirror(y + 2, height - 1) * stride;
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if (y + 1 < (unsigned)height)
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horizontal_decompose53i(b2, temp, width);
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if (y + 2 < (unsigned)height)
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horizontal_decompose53i(b3, temp, width);
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if (y + 1 < (unsigned)height)
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vertical_decompose53iH0(b1, b2, b3, width);
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if (y + 0 < (unsigned)height)
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vertical_decompose53iL0(b0, b1, b2, width);
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b0 = b2;
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b1 = b3;
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}
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}
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static void horizontal_decompose97i(DWTELEM *b, DWTELEM *temp, int width)
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{
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const int w2 = (width + 1) >> 1;
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lift(temp + w2, b + 1, b, 1, 2, 2, width, W_AM, W_AO, W_AS, 1, 1);
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liftS(temp, b, temp + w2, 1, 2, 1, width, W_BM, W_BO, W_BS, 0, 0);
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lift(b + w2, temp + w2, temp, 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 0);
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lift(b, temp, b + w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 0);
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}
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static void vertical_decompose97iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
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int width)
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{
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int i;
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for (i = 0; i < width; i++)
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b1[i] -= (W_AM * (b0[i] + b2[i]) + W_AO) >> W_AS;
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}
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static void vertical_decompose97iH1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
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int width)
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{
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int i;
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for (i = 0; i < width; i++)
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b1[i] += (W_CM * (b0[i] + b2[i]) + W_CO) >> W_CS;
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}
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static void vertical_decompose97iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
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int width)
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{
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int i;
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for (i = 0; i < width; i++)
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b1[i] = (16 * 4 * b1[i] - 4 * (b0[i] + b2[i]) + W_BO * 5 + (5 << 27)) /
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(5 * 16) - (1 << 23);
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}
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static void vertical_decompose97iL1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
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int width)
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{
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int i;
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for (i = 0; i < width; i++)
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b1[i] += (W_DM * (b0[i] + b2[i]) + W_DO) >> W_DS;
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}
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static void spatial_decompose97i(DWTELEM *buffer, DWTELEM *temp,
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int width, int height, int stride)
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{
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int y;
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DWTELEM *b0 = buffer + mirror(-4 - 1, height - 1) * stride;
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DWTELEM *b1 = buffer + mirror(-4, height - 1) * stride;
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DWTELEM *b2 = buffer + mirror(-4 + 1, height - 1) * stride;
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DWTELEM *b3 = buffer + mirror(-4 + 2, height - 1) * stride;
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for (y = -4; y < height; y += 2) {
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DWTELEM *b4 = buffer + mirror(y + 3, height - 1) * stride;
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DWTELEM *b5 = buffer + mirror(y + 4, height - 1) * stride;
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if (y + 3 < (unsigned)height)
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horizontal_decompose97i(b4, temp, width);
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if (y + 4 < (unsigned)height)
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horizontal_decompose97i(b5, temp, width);
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if (y + 3 < (unsigned)height)
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vertical_decompose97iH0(b3, b4, b5, width);
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if (y + 2 < (unsigned)height)
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vertical_decompose97iL0(b2, b3, b4, width);
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if (y + 1 < (unsigned)height)
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vertical_decompose97iH1(b1, b2, b3, width);
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if (y + 0 < (unsigned)height)
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vertical_decompose97iL1(b0, b1, b2, width);
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b0 = b2;
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b1 = b3;
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b2 = b4;
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b3 = b5;
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}
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}
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void ff_spatial_dwt(DWTELEM *buffer, DWTELEM *temp, int width, int height,
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int stride, int type, int decomposition_count)
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{
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int level;
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for (level = 0; level < decomposition_count; level++) {
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switch (type) {
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case DWT_97:
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spatial_decompose97i(buffer, temp,
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width >> level, height >> level,
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stride << level);
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break;
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case DWT_53:
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spatial_decompose53i(buffer, temp,
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width >> level, height >> level,
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stride << level);
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break;
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}
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}
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}
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static void horizontal_compose53i(IDWTELEM *b, IDWTELEM *temp, int width)
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{
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const int width2 = width >> 1;
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const int w2 = (width + 1) >> 1;
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int x;
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for (x = 0; x < width2; x++) {
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temp[2 * x] = b[x];
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temp[2 * x + 1] = b[x + w2];
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}
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if (width & 1)
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temp[2 * x] = b[x];
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b[0] = temp[0] - ((temp[1] + 1) >> 1);
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for (x = 2; x < width - 1; x += 2) {
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b[x] = temp[x] - ((temp[x - 1] + temp[x + 1] + 2) >> 2);
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b[x - 1] = temp[x - 1] + ((b[x - 2] + b[x] + 1) >> 1);
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}
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if (width & 1) {
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b[x] = temp[x] - ((temp[x - 1] + 1) >> 1);
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b[x - 1] = temp[x - 1] + ((b[x - 2] + b[x] + 1) >> 1);
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} else
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b[x - 1] = temp[x - 1] + b[x - 2];
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}
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static void vertical_compose53iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
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int width)
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{
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int i;
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for (i = 0; i < width; i++)
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b1[i] += (b0[i] + b2[i]) >> 1;
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}
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static void vertical_compose53iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
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int width)
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{
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int i;
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for (i = 0; i < width; i++)
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b1[i] -= (b0[i] + b2[i] + 2) >> 2;
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}
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static void spatial_compose53i_buffered_init(DWTCompose *cs, slice_buffer *sb,
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int height, int stride_line)
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{
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cs->b0 = slice_buffer_get_line(sb,
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mirror(-1 - 1, height - 1) * stride_line);
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cs->b1 = slice_buffer_get_line(sb, mirror(-1, height - 1) * stride_line);
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cs->y = -1;
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}
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static void spatial_compose53i_init(DWTCompose *cs, IDWTELEM *buffer,
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int height, int stride)
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{
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cs->b0 = buffer + mirror(-1 - 1, height - 1) * stride;
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cs->b1 = buffer + mirror(-1, height - 1) * stride;
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cs->y = -1;
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}
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static void spatial_compose53i_dy_buffered(DWTCompose *cs, slice_buffer *sb,
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IDWTELEM *temp,
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int width, int height,
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int stride_line)
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{
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int y = cs->y;
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IDWTELEM *b0 = cs->b0;
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IDWTELEM *b1 = cs->b1;
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IDWTELEM *b2 = slice_buffer_get_line(sb,
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mirror(y + 1, height - 1) *
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stride_line);
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IDWTELEM *b3 = slice_buffer_get_line(sb,
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mirror(y + 2, height - 1) *
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stride_line);
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if (y + 1 < (unsigned)height && y < (unsigned)height) {
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int x;
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for (x = 0; x < width; x++) {
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b2[x] -= (b1[x] + b3[x] + 2) >> 2;
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b1[x] += (b0[x] + b2[x]) >> 1;
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}
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} else {
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if (y + 1 < (unsigned)height)
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vertical_compose53iL0(b1, b2, b3, width);
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if (y + 0 < (unsigned)height)
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vertical_compose53iH0(b0, b1, b2, width);
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}
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if (y - 1 < (unsigned)height)
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horizontal_compose53i(b0, temp, width);
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if (y + 0 < (unsigned)height)
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horizontal_compose53i(b1, temp, width);
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cs->b0 = b2;
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cs->b1 = b3;
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cs->y += 2;
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}
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static void spatial_compose53i_dy(DWTCompose *cs, IDWTELEM *buffer,
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IDWTELEM *temp, int width, int height,
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int stride)
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{
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int y = cs->y;
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IDWTELEM *b0 = cs->b0;
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IDWTELEM *b1 = cs->b1;
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IDWTELEM *b2 = buffer + mirror(y + 1, height - 1) * stride;
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IDWTELEM *b3 = buffer + mirror(y + 2, height - 1) * stride;
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if (y + 1 < (unsigned)height)
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vertical_compose53iL0(b1, b2, b3, width);
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if (y + 0 < (unsigned)height)
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vertical_compose53iH0(b0, b1, b2, width);
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if (y - 1 < (unsigned)height)
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horizontal_compose53i(b0, temp, width);
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if (y + 0 < (unsigned)height)
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horizontal_compose53i(b1, temp, width);
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cs->b0 = b2;
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cs->b1 = b3;
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cs->y += 2;
|
|
}
|
|
|
|
void ff_snow_horizontal_compose97i(IDWTELEM *b, IDWTELEM *temp, int width)
|
|
{
|
|
const int w2 = (width + 1) >> 1;
|
|
int x;
|
|
|
|
temp[0] = b[0] - ((3 * b[w2] + 2) >> 2);
|
|
for (x = 1; x < (width >> 1); x++) {
|
|
temp[2 * x] = b[x] - ((3 * (b[x + w2 - 1] + b[x + w2]) + 4) >> 3);
|
|
temp[2 * x - 1] = b[x + w2 - 1] - temp[2 * x - 2] - temp[2 * x];
|
|
}
|
|
if (width & 1) {
|
|
temp[2 * x] = b[x] - ((3 * b[x + w2 - 1] + 2) >> 2);
|
|
temp[2 * x - 1] = b[x + w2 - 1] - temp[2 * x - 2] - temp[2 * x];
|
|
} else
|
|
temp[2 * x - 1] = b[x + w2 - 1] - 2 * temp[2 * x - 2];
|
|
|
|
b[0] = temp[0] + ((2 * temp[0] + temp[1] + 4) >> 3);
|
|
for (x = 2; x < width - 1; x += 2) {
|
|
b[x] = temp[x] + ((4 * temp[x] + temp[x - 1] + temp[x + 1] + 8) >> 4);
|
|
b[x - 1] = temp[x - 1] + ((3 * (b[x - 2] + b[x])) >> 1);
|
|
}
|
|
if (width & 1) {
|
|
b[x] = temp[x] + ((2 * temp[x] + temp[x - 1] + 4) >> 3);
|
|
b[x - 1] = temp[x - 1] + ((3 * (b[x - 2] + b[x])) >> 1);
|
|
} else
|
|
b[x - 1] = temp[x - 1] + 3 * b[x - 2];
|
|
}
|
|
|
|
static void vertical_compose97iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
|
|
int width)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < width; i++)
|
|
b1[i] += (W_AM * (b0[i] + b2[i]) + W_AO) >> W_AS;
|
|
}
|
|
|
|
static void vertical_compose97iH1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
|
|
int width)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < width; i++)
|
|
b1[i] -= (W_CM * (b0[i] + b2[i]) + W_CO) >> W_CS;
|
|
}
|
|
|
|
static void vertical_compose97iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
|
|
int width)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < width; i++)
|
|
b1[i] += (W_BM * (b0[i] + b2[i]) + 4 * b1[i] + W_BO) >> W_BS;
|
|
}
|
|
|
|
static void vertical_compose97iL1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
|
|
int width)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < width; i++)
|
|
b1[i] -= (W_DM * (b0[i] + b2[i]) + W_DO) >> W_DS;
|
|
}
|
|
|
|
void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
|
|
IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
|
|
int width)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < width; i++) {
|
|
b4[i] -= (W_DM * (b3[i] + b5[i]) + W_DO) >> W_DS;
|
|
b3[i] -= (W_CM * (b2[i] + b4[i]) + W_CO) >> W_CS;
|
|
b2[i] += (W_BM * (b1[i] + b3[i]) + 4 * b2[i] + W_BO) >> W_BS;
|
|
b1[i] += (W_AM * (b0[i] + b2[i]) + W_AO) >> W_AS;
|
|
}
|
|
}
|
|
|
|
static void spatial_compose97i_buffered_init(DWTCompose *cs, slice_buffer *sb,
|
|
int height, int stride_line)
|
|
{
|
|
cs->b0 = slice_buffer_get_line(sb, mirror(-3 - 1, height - 1) * stride_line);
|
|
cs->b1 = slice_buffer_get_line(sb, mirror(-3, height - 1) * stride_line);
|
|
cs->b2 = slice_buffer_get_line(sb, mirror(-3 + 1, height - 1) * stride_line);
|
|
cs->b3 = slice_buffer_get_line(sb, mirror(-3 + 2, height - 1) * stride_line);
|
|
cs->y = -3;
|
|
}
|
|
|
|
static void spatial_compose97i_init(DWTCompose *cs, IDWTELEM *buffer, int height,
|
|
int stride)
|
|
{
|
|
cs->b0 = buffer + mirror(-3 - 1, height - 1) * stride;
|
|
cs->b1 = buffer + mirror(-3, height - 1) * stride;
|
|
cs->b2 = buffer + mirror(-3 + 1, height - 1) * stride;
|
|
cs->b3 = buffer + mirror(-3 + 2, height - 1) * stride;
|
|
cs->y = -3;
|
|
}
|
|
|
|
static void spatial_compose97i_dy_buffered(SnowDWTContext *dsp, DWTCompose *cs,
|
|
slice_buffer * sb, IDWTELEM *temp,
|
|
int width, int height,
|
|
int stride_line)
|
|
{
|
|
int y = cs->y;
|
|
|
|
IDWTELEM *b0 = cs->b0;
|
|
IDWTELEM *b1 = cs->b1;
|
|
IDWTELEM *b2 = cs->b2;
|
|
IDWTELEM *b3 = cs->b3;
|
|
IDWTELEM *b4 = slice_buffer_get_line(sb,
|
|
mirror(y + 3, height - 1) *
|
|
stride_line);
|
|
IDWTELEM *b5 = slice_buffer_get_line(sb,
|
|
mirror(y + 4, height - 1) *
|
|
stride_line);
|
|
|
|
if (y > 0 && y + 4 < height) {
|
|
dsp->vertical_compose97i(b0, b1, b2, b3, b4, b5, width);
|
|
} else {
|
|
if (y + 3 < (unsigned)height)
|
|
vertical_compose97iL1(b3, b4, b5, width);
|
|
if (y + 2 < (unsigned)height)
|
|
vertical_compose97iH1(b2, b3, b4, width);
|
|
if (y + 1 < (unsigned)height)
|
|
vertical_compose97iL0(b1, b2, b3, width);
|
|
if (y + 0 < (unsigned)height)
|
|
vertical_compose97iH0(b0, b1, b2, width);
|
|
}
|
|
|
|
if (y - 1 < (unsigned)height)
|
|
dsp->horizontal_compose97i(b0, temp, width);
|
|
if (y + 0 < (unsigned)height)
|
|
dsp->horizontal_compose97i(b1, temp, width);
|
|
|
|
cs->b0 = b2;
|
|
cs->b1 = b3;
|
|
cs->b2 = b4;
|
|
cs->b3 = b5;
|
|
cs->y += 2;
|
|
}
|
|
|
|
static void spatial_compose97i_dy(DWTCompose *cs, IDWTELEM *buffer,
|
|
IDWTELEM *temp, int width, int height,
|
|
int stride)
|
|
{
|
|
int y = cs->y;
|
|
IDWTELEM *b0 = cs->b0;
|
|
IDWTELEM *b1 = cs->b1;
|
|
IDWTELEM *b2 = cs->b2;
|
|
IDWTELEM *b3 = cs->b3;
|
|
IDWTELEM *b4 = buffer + mirror(y + 3, height - 1) * stride;
|
|
IDWTELEM *b5 = buffer + mirror(y + 4, height - 1) * stride;
|
|
|
|
if (y + 3 < (unsigned)height)
|
|
vertical_compose97iL1(b3, b4, b5, width);
|
|
if (y + 2 < (unsigned)height)
|
|
vertical_compose97iH1(b2, b3, b4, width);
|
|
if (y + 1 < (unsigned)height)
|
|
vertical_compose97iL0(b1, b2, b3, width);
|
|
if (y + 0 < (unsigned)height)
|
|
vertical_compose97iH0(b0, b1, b2, width);
|
|
|
|
if (y - 1 < (unsigned)height)
|
|
ff_snow_horizontal_compose97i(b0, temp, width);
|
|
if (y + 0 < (unsigned)height)
|
|
ff_snow_horizontal_compose97i(b1, temp, width);
|
|
|
|
cs->b0 = b2;
|
|
cs->b1 = b3;
|
|
cs->b2 = b4;
|
|
cs->b3 = b5;
|
|
cs->y += 2;
|
|
}
|
|
|
|
void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer *sb, int width,
|
|
int height, int stride_line, int type,
|
|
int decomposition_count)
|
|
{
|
|
int level;
|
|
for (level = decomposition_count - 1; level >= 0; level--) {
|
|
switch (type) {
|
|
case DWT_97:
|
|
spatial_compose97i_buffered_init(cs + level, sb, height >> level,
|
|
stride_line << level);
|
|
break;
|
|
case DWT_53:
|
|
spatial_compose53i_buffered_init(cs + level, sb, height >> level,
|
|
stride_line << level);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
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)
|
|
{
|
|
const int support = type == 1 ? 3 : 5;
|
|
int level;
|
|
if (type == 2)
|
|
return;
|
|
|
|
for (level = decomposition_count - 1; level >= 0; level--)
|
|
while (cs[level].y <= FFMIN((y >> level) + support, height >> level)) {
|
|
switch (type) {
|
|
case DWT_97:
|
|
spatial_compose97i_dy_buffered(dsp, cs + level, slice_buf, temp,
|
|
width >> level,
|
|
height >> level,
|
|
stride_line << level);
|
|
break;
|
|
case DWT_53:
|
|
spatial_compose53i_dy_buffered(cs + level, slice_buf, temp,
|
|
width >> level,
|
|
height >> level,
|
|
stride_line << level);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ff_spatial_idwt_init(DWTCompose *cs, IDWTELEM *buffer, int width,
|
|
int height, int stride, int type,
|
|
int decomposition_count)
|
|
{
|
|
int level;
|
|
for (level = decomposition_count - 1; level >= 0; level--) {
|
|
switch (type) {
|
|
case DWT_97:
|
|
spatial_compose97i_init(cs + level, buffer, height >> level,
|
|
stride << level);
|
|
break;
|
|
case DWT_53:
|
|
spatial_compose53i_init(cs + level, buffer, height >> level,
|
|
stride << level);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ff_spatial_idwt_slice(DWTCompose *cs, IDWTELEM *buffer,
|
|
IDWTELEM *temp, int width, int height,
|
|
int stride, int type,
|
|
int decomposition_count, int y)
|
|
{
|
|
const int support = type == 1 ? 3 : 5;
|
|
int level;
|
|
if (type == 2)
|
|
return;
|
|
|
|
for (level = decomposition_count - 1; level >= 0; level--)
|
|
while (cs[level].y <= FFMIN((y >> level) + support, height >> level)) {
|
|
switch (type) {
|
|
case DWT_97:
|
|
spatial_compose97i_dy(cs + level, buffer, temp, width >> level,
|
|
height >> level, stride << level);
|
|
break;
|
|
case DWT_53:
|
|
spatial_compose53i_dy(cs + level, buffer, temp, width >> level,
|
|
height >> level, stride << level);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height,
|
|
int stride, int type, int decomposition_count)
|
|
{
|
|
DWTCompose cs[MAX_DECOMPOSITIONS];
|
|
int y;
|
|
ff_spatial_idwt_init(cs, buffer, width, height, stride, type,
|
|
decomposition_count);
|
|
for (y = 0; y < height; y += 4)
|
|
ff_spatial_idwt_slice(cs, buffer, temp, width, height, stride, type,
|
|
decomposition_count, y);
|
|
}
|
|
|
|
static inline int w_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size,
|
|
int w, int h, int type)
|
|
{
|
|
int s, i, j;
|
|
const int dec_count = w == 8 ? 3 : 4;
|
|
int tmp[32 * 32], tmp2[32];
|
|
int level, ori;
|
|
static const int scale[2][2][4][4] = {
|
|
{
|
|
{ // 9/7 8x8 dec=3
|
|
{ 268, 239, 239, 213 },
|
|
{ 0, 224, 224, 152 },
|
|
{ 0, 135, 135, 110 },
|
|
},
|
|
{ // 9/7 16x16 or 32x32 dec=4
|
|
{ 344, 310, 310, 280 },
|
|
{ 0, 320, 320, 228 },
|
|
{ 0, 175, 175, 136 },
|
|
{ 0, 129, 129, 102 },
|
|
}
|
|
},
|
|
{
|
|
{ // 5/3 8x8 dec=3
|
|
{ 275, 245, 245, 218 },
|
|
{ 0, 230, 230, 156 },
|
|
{ 0, 138, 138, 113 },
|
|
},
|
|
{ // 5/3 16x16 or 32x32 dec=4
|
|
{ 352, 317, 317, 286 },
|
|
{ 0, 328, 328, 233 },
|
|
{ 0, 180, 180, 140 },
|
|
{ 0, 132, 132, 105 },
|
|
}
|
|
}
|
|
};
|
|
|
|
for (i = 0; i < h; i++) {
|
|
for (j = 0; j < w; j += 4) {
|
|
tmp[32 * i + j + 0] = (pix1[j + 0] - pix2[j + 0]) << 4;
|
|
tmp[32 * i + j + 1] = (pix1[j + 1] - pix2[j + 1]) << 4;
|
|
tmp[32 * i + j + 2] = (pix1[j + 2] - pix2[j + 2]) << 4;
|
|
tmp[32 * i + j + 3] = (pix1[j + 3] - pix2[j + 3]) << 4;
|
|
}
|
|
pix1 += line_size;
|
|
pix2 += line_size;
|
|
}
|
|
|
|
ff_spatial_dwt(tmp, tmp2, w, h, 32, type, dec_count);
|
|
|
|
s = 0;
|
|
av_assert1(w == h);
|
|
for (level = 0; level < dec_count; level++)
|
|
for (ori = level ? 1 : 0; ori < 4; ori++) {
|
|
int size = w >> (dec_count - level);
|
|
int sx = (ori & 1) ? size : 0;
|
|
int stride = 32 << (dec_count - level);
|
|
int sy = (ori & 2) ? stride >> 1 : 0;
|
|
|
|
for (i = 0; i < size; i++)
|
|
for (j = 0; j < size; j++) {
|
|
int v = tmp[sx + sy + i * stride + j] *
|
|
scale[type][dec_count - 3][level][ori];
|
|
s += FFABS(v);
|
|
}
|
|
}
|
|
av_assert1(s >= 0);
|
|
return s >> 9;
|
|
}
|
|
|
|
static int w53_8_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
|
|
{
|
|
return w_c(v, pix1, pix2, line_size, 8, h, 1);
|
|
}
|
|
|
|
static int w97_8_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
|
|
{
|
|
return w_c(v, pix1, pix2, line_size, 8, h, 0);
|
|
}
|
|
|
|
static int w53_16_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
|
|
{
|
|
return w_c(v, pix1, pix2, line_size, 16, h, 1);
|
|
}
|
|
|
|
static int w97_16_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
|
|
{
|
|
return w_c(v, pix1, pix2, line_size, 16, h, 0);
|
|
}
|
|
|
|
int ff_w53_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
|
|
{
|
|
return w_c(v, pix1, pix2, line_size, 32, h, 1);
|
|
}
|
|
|
|
int ff_w97_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
|
|
{
|
|
return w_c(v, pix1, pix2, line_size, 32, h, 0);
|
|
}
|
|
|
|
void ff_dsputil_init_dwt(DSPContext *c)
|
|
{
|
|
c->w53[0] = w53_16_c;
|
|
c->w53[1] = w53_8_c;
|
|
c->w97[0] = w97_16_c;
|
|
c->w97[1] = w97_8_c;
|
|
}
|
|
|
|
void ff_dwt_init(SnowDWTContext *c)
|
|
{
|
|
c->vertical_compose97i = ff_snow_vertical_compose97i;
|
|
c->horizontal_compose97i = ff_snow_horizontal_compose97i;
|
|
c->inner_add_yblock = ff_snow_inner_add_yblock;
|
|
|
|
if (HAVE_MMX)
|
|
ff_dwt_init_x86(c);
|
|
}
|
|
|
|
|