/* * 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); }