| /* |
| * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at> |
| * Copyright (C) 2008 David Conrad |
| * |
| * 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 |
| */ |
| |
| #include "libavutil/attributes.h" |
| #include "libavutil/avassert.h" |
| #include "libavutil/common.h" |
| #include "me_cmp.h" |
| #include "snow_dwt.h" |
| |
| int ff_slice_buffer_init(slice_buffer *buf, int line_count, |
| int max_allocated_lines, int line_width, |
| IDWTELEM *base_buffer) |
| { |
| int i; |
| |
| buf->base_buffer = base_buffer; |
| buf->line_count = line_count; |
| buf->line_width = line_width; |
| buf->data_count = max_allocated_lines; |
| buf->line = av_mallocz_array(line_count, sizeof(IDWTELEM *)); |
| if (!buf->line) |
| return AVERROR(ENOMEM); |
| buf->data_stack = av_malloc_array(max_allocated_lines, sizeof(IDWTELEM *)); |
| if (!buf->data_stack) { |
| av_freep(&buf->line); |
| return AVERROR(ENOMEM); |
| } |
| |
| for (i = 0; i < max_allocated_lines; i++) { |
| buf->data_stack[i] = av_malloc_array(line_width, sizeof(IDWTELEM)); |
| if (!buf->data_stack[i]) { |
| for (i--; i >=0; i--) |
| av_freep(&buf->data_stack[i]); |
| av_freep(&buf->data_stack); |
| av_freep(&buf->line); |
| return AVERROR(ENOMEM); |
| } |
| } |
| |
| buf->data_stack_top = max_allocated_lines - 1; |
| return 0; |
| } |
| |
| IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line) |
| { |
| IDWTELEM *buffer; |
| |
| av_assert0(buf->data_stack_top >= 0); |
| // av_assert1(!buf->line[line]); |
| if (buf->line[line]) |
| return buf->line[line]; |
| |
| buffer = buf->data_stack[buf->data_stack_top]; |
| buf->data_stack_top--; |
| buf->line[line] = buffer; |
| |
| return buffer; |
| } |
| |
| void ff_slice_buffer_release(slice_buffer *buf, int line) |
| { |
| IDWTELEM *buffer; |
| |
| av_assert1(line >= 0 && line < buf->line_count); |
| av_assert1(buf->line[line]); |
| |
| buffer = buf->line[line]; |
| buf->data_stack_top++; |
| buf->data_stack[buf->data_stack_top] = buffer; |
| buf->line[line] = NULL; |
| } |
| |
| void ff_slice_buffer_flush(slice_buffer *buf) |
| { |
| int i; |
| |
| if (!buf->line) |
| return; |
| |
| for (i = 0; i < buf->line_count; i++) |
| if (buf->line[i]) |
| ff_slice_buffer_release(buf, i); |
| } |
| |
| void ff_slice_buffer_destroy(slice_buffer *buf) |
| { |
| int i; |
| ff_slice_buffer_flush(buf); |
| |
| if (buf->data_stack) |
| for (i = buf->data_count - 1; i >= 0; i--) |
| av_freep(&buf->data_stack[i]); |
| av_freep(&buf->data_stack); |
| av_freep(&buf->line); |
| } |
| |
| static av_always_inline void lift(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, |
| int dst_step, int src_step, int ref_step, |
| int width, int mul, int add, int shift, |
| int highpass, int inverse) |
| { |
| const int mirror_left = !highpass; |
| const int mirror_right = (width & 1) ^ highpass; |
| const int w = (width >> 1) - 1 + (highpass & width); |
| int i; |
| |
| #define LIFT(src, ref, inv) ((src) + ((inv) ? -(ref) : +(ref))) |
| if (mirror_left) { |
| dst[0] = LIFT(src[0], ((mul * 2 * ref[0] + add) >> shift), inverse); |
| dst += dst_step; |
| src += src_step; |
| } |
| |
| for (i = 0; i < w; i++) |
| dst[i * dst_step] = LIFT(src[i * src_step], |
| ((mul * (ref[i * ref_step] + |
| ref[(i + 1) * ref_step]) + |
| add) >> shift), |
| inverse); |
| |
| if (mirror_right) |
| dst[w * dst_step] = LIFT(src[w * src_step], |
| ((mul * 2 * ref[w * ref_step] + add) >> shift), |
| inverse); |
| } |
| |
| static av_always_inline void liftS(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, |
| int dst_step, int src_step, int ref_step, |
| int width, int mul, int add, int shift, |
| int highpass, int inverse) |
| { |
| const int mirror_left = !highpass; |
| const int mirror_right = (width & 1) ^ highpass; |
| const int w = (width >> 1) - 1 + (highpass & width); |
| int i; |
| |
| av_assert1(shift == 4); |
| #define LIFTS(src, ref, inv) \ |
| ((inv) ? (src) + (((ref) + 4 * (src)) >> shift) \ |
| : -((-16 * (src) + (ref) + add / \ |
| 4 + 1 + (5 << 25)) / (5 * 4) - (1 << 23))) |
| if (mirror_left) { |
| dst[0] = LIFTS(src[0], mul * 2 * ref[0] + add, inverse); |
| dst += dst_step; |
| src += src_step; |
| } |
| |
| for (i = 0; i < w; i++) |
| dst[i * dst_step] = LIFTS(src[i * src_step], |
| mul * (ref[i * ref_step] + |
| ref[(i + 1) * ref_step]) + add, |
| inverse); |
| |
| if (mirror_right) |
| dst[w * dst_step] = LIFTS(src[w * src_step], |
| mul * 2 * ref[w * ref_step] + add, |
| inverse); |
| } |
| |
| static void horizontal_decompose53i(DWTELEM *b, DWTELEM *temp, int width) |
| { |
| const int width2 = width >> 1; |
| int x; |
| const int w2 = (width + 1) >> 1; |
| |
| for (x = 0; x < width2; x++) { |
| temp[x] = b[2 * x]; |
| temp[x + w2] = b[2 * x + 1]; |
| } |
| if (width & 1) |
| temp[x] = b[2 * x]; |
| lift(b + w2, temp + w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 0); |
| lift(b, temp, b + w2, 1, 1, 1, width, 1, 2, 2, 0, 0); |
| } |
| |
| static void vertical_decompose53iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, |
| int width) |
| { |
| int i; |
| |
| for (i = 0; i < width; i++) |
| b1[i] -= (b0[i] + b2[i]) >> 1; |
| } |
| |
| static void vertical_decompose53iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, |
| int width) |
| { |
| int i; |
| |
| for (i = 0; i < width; i++) |
| b1[i] += (b0[i] + b2[i] + 2) >> 2; |
| } |
| |
| static void spatial_decompose53i(DWTELEM *buffer, DWTELEM *temp, |
| int width, int height, int stride) |
| { |
| int y; |
| DWTELEM *b0 = buffer + avpriv_mirror(-2 - 1, height - 1) * stride; |
| DWTELEM *b1 = buffer + avpriv_mirror(-2, height - 1) * stride; |
| |
| for (y = -2; y < height; y += 2) { |
| DWTELEM *b2 = buffer + avpriv_mirror(y + 1, height - 1) * stride; |
| DWTELEM *b3 = buffer + avpriv_mirror(y + 2, height - 1) * stride; |
| |
| if (y + 1 < (unsigned)height) |
| horizontal_decompose53i(b2, temp, width); |
| if (y + 2 < (unsigned)height) |
| horizontal_decompose53i(b3, temp, width); |
| |
| if (y + 1 < (unsigned)height) |
| vertical_decompose53iH0(b1, b2, b3, width); |
| if (y + 0 < (unsigned)height) |
| vertical_decompose53iL0(b0, b1, b2, width); |
| |
| b0 = b2; |
| b1 = b3; |
| } |
| } |
| |
| static void horizontal_decompose97i(DWTELEM *b, DWTELEM *temp, int width) |
| { |
| const int w2 = (width + 1) >> 1; |
| |
| lift(temp + w2, b + 1, b, 1, 2, 2, width, W_AM, W_AO, W_AS, 1, 1); |
| liftS(temp, b, temp + w2, 1, 2, 1, width, W_BM, W_BO, W_BS, 0, 0); |
| lift(b + w2, temp + w2, temp, 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 0); |
| lift(b, temp, b + w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 0); |
| } |
| |
| static void vertical_decompose97iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *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_decompose97iH1(DWTELEM *b0, DWTELEM *b1, DWTELEM *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_decompose97iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, |
| int width) |
| { |
| int i; |
| |
| for (i = 0; i < width; i++) |
| b1[i] = (16 * 4 * b1[i] - 4 * (b0[i] + b2[i]) + W_BO * 5 + (5 << 27)) / |
| (5 * 16) - (1 << 23); |
| } |
| |
| static void vertical_decompose97iL1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, |
| int width) |
| { |
| int i; |
| |
| for (i = 0; i < width; i++) |
| b1[i] += (W_DM * (b0[i] + b2[i]) + W_DO) >> W_DS; |
| } |
| |
| static void spatial_decompose97i(DWTELEM *buffer, DWTELEM *temp, |
| int width, int height, int stride) |
| { |
| int y; |
| DWTELEM *b0 = buffer + avpriv_mirror(-4 - 1, height - 1) * stride; |
| DWTELEM *b1 = buffer + avpriv_mirror(-4, height - 1) * stride; |
| DWTELEM *b2 = buffer + avpriv_mirror(-4 + 1, height - 1) * stride; |
| DWTELEM *b3 = buffer + avpriv_mirror(-4 + 2, height - 1) * stride; |
| |
| for (y = -4; y < height; y += 2) { |
| DWTELEM *b4 = buffer + avpriv_mirror(y + 3, height - 1) * stride; |
| DWTELEM *b5 = buffer + avpriv_mirror(y + 4, height - 1) * stride; |
| |
| if (y + 3 < (unsigned)height) |
| horizontal_decompose97i(b4, temp, width); |
| if (y + 4 < (unsigned)height) |
| horizontal_decompose97i(b5, temp, width); |
| |
| if (y + 3 < (unsigned)height) |
| vertical_decompose97iH0(b3, b4, b5, width); |
| if (y + 2 < (unsigned)height) |
| vertical_decompose97iL0(b2, b3, b4, width); |
| if (y + 1 < (unsigned)height) |
| vertical_decompose97iH1(b1, b2, b3, width); |
| if (y + 0 < (unsigned)height) |
| vertical_decompose97iL1(b0, b1, b2, width); |
| |
| b0 = b2; |
| b1 = b3; |
| b2 = b4; |
| b3 = b5; |
| } |
| } |
| |
| void ff_spatial_dwt(DWTELEM *buffer, DWTELEM *temp, int width, int height, |
| int stride, int type, int decomposition_count) |
| { |
| int level; |
| |
| for (level = 0; level < decomposition_count; level++) { |
| switch (type) { |
| case DWT_97: |
| spatial_decompose97i(buffer, temp, |
| width >> level, height >> level, |
| stride << level); |
| break; |
| case DWT_53: |
| spatial_decompose53i(buffer, temp, |
| width >> level, height >> level, |
| stride << level); |
| break; |
| } |
| } |
| } |
| |
| static void horizontal_compose53i(IDWTELEM *b, IDWTELEM *temp, int width) |
| { |
| const int width2 = width >> 1; |
| const int w2 = (width + 1) >> 1; |
| int x; |
| |
| for (x = 0; x < width2; x++) { |
| temp[2 * x] = b[x]; |
| temp[2 * x + 1] = b[x + w2]; |
| } |
| if (width & 1) |
| temp[2 * x] = b[x]; |
| |
| b[0] = temp[0] - ((temp[1] + 1) >> 1); |
| for (x = 2; x < width - 1; x += 2) { |
| b[x] = temp[x] - ((temp[x - 1] + temp[x + 1] + 2) >> 2); |
| b[x - 1] = temp[x - 1] + ((b[x - 2] + b[x] + 1) >> 1); |
| } |
| if (width & 1) { |
| b[x] = temp[x] - ((temp[x - 1] + 1) >> 1); |
| b[x - 1] = temp[x - 1] + ((b[x - 2] + b[x] + 1) >> 1); |
| } else |
| b[x - 1] = temp[x - 1] + b[x - 2]; |
| } |
| |
| static void vertical_compose53iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, |
| int width) |
| { |
| int i; |
| |
| for (i = 0; i < width; i++) |
| b1[i] += (b0[i] + b2[i]) >> 1; |
| } |
| |
| static void vertical_compose53iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, |
| int width) |
| { |
| int i; |
| |
| for (i = 0; i < width; i++) |
| b1[i] -= (b0[i] + b2[i] + 2) >> 2; |
| } |
| |
| static void spatial_compose53i_buffered_init(DWTCompose *cs, slice_buffer *sb, |
| int height, int stride_line) |
| { |
| cs->b0 = slice_buffer_get_line(sb, |
| avpriv_mirror(-1 - 1, height - 1) * stride_line); |
| cs->b1 = slice_buffer_get_line(sb, avpriv_mirror(-1, height - 1) * stride_line); |
| cs->y = -1; |
| } |
| |
| static void spatial_compose53i_init(DWTCompose *cs, IDWTELEM *buffer, |
| int height, int stride) |
| { |
| cs->b0 = buffer + avpriv_mirror(-1 - 1, height - 1) * stride; |
| cs->b1 = buffer + avpriv_mirror(-1, height - 1) * stride; |
| cs->y = -1; |
| } |
| |
| static void spatial_compose53i_dy_buffered(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 = slice_buffer_get_line(sb, |
| avpriv_mirror(y + 1, height - 1) * |
| stride_line); |
| IDWTELEM *b3 = slice_buffer_get_line(sb, |
| avpriv_mirror(y + 2, height - 1) * |
| stride_line); |
| |
| if (y + 1 < (unsigned)height && y < (unsigned)height) { |
| int x; |
| |
| for (x = 0; x < width; x++) { |
| b2[x] -= (b1[x] + b3[x] + 2) >> 2; |
| b1[x] += (b0[x] + b2[x]) >> 1; |
| } |
| } else { |
| if (y + 1 < (unsigned)height) |
| vertical_compose53iL0(b1, b2, b3, width); |
| if (y + 0 < (unsigned)height) |
| vertical_compose53iH0(b0, b1, b2, width); |
| } |
| |
| if (y - 1 < (unsigned)height) |
| horizontal_compose53i(b0, temp, width); |
| if (y + 0 < (unsigned)height) |
| horizontal_compose53i(b1, temp, width); |
| |
| cs->b0 = b2; |
| cs->b1 = b3; |
| cs->y += 2; |
| } |
| |
| static void spatial_compose53i_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 = buffer + avpriv_mirror(y + 1, height - 1) * stride; |
| IDWTELEM *b3 = buffer + avpriv_mirror(y + 2, height - 1) * stride; |
| |
| if (y + 1 < (unsigned)height) |
| vertical_compose53iL0(b1, b2, b3, width); |
| if (y + 0 < (unsigned)height) |
| vertical_compose53iH0(b0, b1, b2, width); |
| |
| if (y - 1 < (unsigned)height) |
| horizontal_compose53i(b0, temp, width); |
| if (y + 0 < (unsigned)height) |
| horizontal_compose53i(b1, temp, width); |
| |
| cs->b0 = b2; |
| cs->b1 = b3; |
| 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, avpriv_mirror(-3 - 1, height - 1) * stride_line); |
| cs->b1 = slice_buffer_get_line(sb, avpriv_mirror(-3, height - 1) * stride_line); |
| cs->b2 = slice_buffer_get_line(sb, avpriv_mirror(-3 + 1, height - 1) * stride_line); |
| cs->b3 = slice_buffer_get_line(sb, avpriv_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 + avpriv_mirror(-3 - 1, height - 1) * stride; |
| cs->b1 = buffer + avpriv_mirror(-3, height - 1) * stride; |
| cs->b2 = buffer + avpriv_mirror(-3 + 1, height - 1) * stride; |
| cs->b3 = buffer + avpriv_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, |
| avpriv_mirror(y + 3, height - 1) * |
| stride_line); |
| IDWTELEM *b5 = slice_buffer_get_line(sb, |
| avpriv_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 + avpriv_mirror(y + 3, height - 1) * stride; |
| IDWTELEM *b5 = buffer + avpriv_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 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 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; |
| spatial_idwt_init(cs, buffer, width, height, stride, type, |
| decomposition_count); |
| for (y = 0; y < height; y += 4) |
| spatial_idwt_slice(cs, buffer, temp, width, height, stride, type, |
| decomposition_count, y); |
| } |
| |
| static inline int w_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t 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(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h) |
| { |
| return w_c(v, pix1, pix2, line_size, 8, h, 1); |
| } |
| |
| static int w97_8_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h) |
| { |
| return w_c(v, pix1, pix2, line_size, 8, h, 0); |
| } |
| |
| static int w53_16_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h) |
| { |
| return w_c(v, pix1, pix2, line_size, 16, h, 1); |
| } |
| |
| static int w97_16_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h) |
| { |
| return w_c(v, pix1, pix2, line_size, 16, h, 0); |
| } |
| |
| int ff_w53_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h) |
| { |
| return w_c(v, pix1, pix2, line_size, 32, h, 1); |
| } |
| |
| int ff_w97_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h) |
| { |
| return w_c(v, pix1, pix2, line_size, 32, h, 0); |
| } |
| |
| av_cold void ff_dsputil_init_dwt(MECmpContext *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; |
| } |
| |
| av_cold 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); |
| } |
| |
| |
