| /* |
| * Copyright (c) 2014 Clément Bœsch |
| * |
| * This file is part of FFmpeg. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /** |
| * @file |
| * hqx magnification filters (hq2x, hq3x, hq4x) |
| * |
| * Originally designed by Maxim Stephin. |
| * |
| * @see http://en.wikipedia.org/wiki/Hqx |
| * @see http://web.archive.org/web/20131114143602/http://www.hiend3d.com/hq3x.html |
| * @see http://blog.pkh.me/p/19-butchering-hqx-scaling-filters.html |
| */ |
| |
| #include "libavutil/opt.h" |
| #include "libavutil/avassert.h" |
| #include "libavutil/pixdesc.h" |
| #include "internal.h" |
| |
| typedef int (*hqxfunc_t)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); |
| |
| typedef struct { |
| const AVClass *class; |
| int n; |
| hqxfunc_t func; |
| uint32_t rgbtoyuv[1<<24]; |
| } HQXContext; |
| |
| typedef struct ThreadData { |
| AVFrame *in, *out; |
| const uint32_t *rgbtoyuv; |
| } ThreadData; |
| |
| #define OFFSET(x) offsetof(HQXContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| static const AVOption hqx_options[] = { |
| { "n", "set scale factor", OFFSET(n), AV_OPT_TYPE_INT, {.i64 = 3}, 2, 4, .flags = FLAGS }, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(hqx); |
| |
| static av_always_inline uint32_t rgb2yuv(const uint32_t *r2y, uint32_t c) |
| { |
| return r2y[c & 0xffffff]; |
| } |
| |
| static av_always_inline int yuv_diff(uint32_t yuv1, uint32_t yuv2) |
| { |
| #define YMASK 0xff0000 |
| #define UMASK 0x00ff00 |
| #define VMASK 0x0000ff |
| return abs((yuv1 & YMASK) - (yuv2 & YMASK)) > (48 << 16) || |
| abs((yuv1 & UMASK) - (yuv2 & UMASK)) > ( 7 << 8) || |
| abs((yuv1 & VMASK) - (yuv2 & VMASK)) > ( 6 << 0); |
| } |
| |
| /* (c1*w1 + c2*w2) >> s */ |
| static av_always_inline uint32_t interp_2px(uint32_t c1, int w1, uint32_t c2, int w2, int s) |
| { |
| return (((((c1 & 0xff00ff00) >> 8) * w1 + ((c2 & 0xff00ff00) >> 8) * w2) << (8 - s)) & 0xff00ff00) | |
| (((((c1 & 0x00ff00ff) ) * w1 + ((c2 & 0x00ff00ff) ) * w2) >> s ) & 0x00ff00ff); |
| } |
| |
| /* (c1*w1 + c2*w2 + c3*w3) >> s */ |
| static av_always_inline uint32_t interp_3px(uint32_t c1, int w1, uint32_t c2, int w2, uint32_t c3, int w3, int s) |
| { |
| return (((((c1 & 0xff00ff00) >> 8) * w1 + ((c2 & 0xff00ff00) >> 8) * w2 + ((c3 & 0xff00ff00) >> 8) * w3) << (8 - s)) & 0xff00ff00) | |
| (((((c1 & 0x00ff00ff) ) * w1 + ((c2 & 0x00ff00ff) ) * w2 + ((c3 & 0x00ff00ff) ) * w3) >> s ) & 0x00ff00ff); |
| } |
| |
| /* m is the mask of diff with the center pixel that matters in the pattern, and |
| * r is the expected result (bit set to 1 if there is difference with the |
| * center, 0 otherwise) */ |
| #define P(m, r) ((k_shuffled & (m)) == (r)) |
| |
| /* adjust 012345678 to 01235678: the mask doesn't contain the (null) diff |
| * between the center/current pixel and itself */ |
| #define DROP4(z) ((z) > 4 ? (z)-1 : (z)) |
| |
| /* shuffle the input mask: move bit n (4-adjusted) to position stored in p<n> */ |
| #define SHF(x, rot, n) (((x) >> ((rot) ? 7-DROP4(n) : DROP4(n)) & 1) << DROP4(p##n)) |
| |
| /* used to check if there is YUV difference between 2 pixels */ |
| #define WDIFF(c1, c2) yuv_diff(rgb2yuv(r2y, c1), rgb2yuv(r2y, c2)) |
| |
| /* bootstrap template for every interpolation code. It defines the shuffled |
| * masks and surrounding pixels. The rot flag is used to indicate if it's a |
| * rotation; its basic effect is to shuffle k using p8..p0 instead of p0..p8 */ |
| #define INTERP_BOOTSTRAP(rot) \ |
| const int k_shuffled = SHF(k,rot,0) | SHF(k,rot,1) | SHF(k,rot,2) \ |
| | SHF(k,rot,3) | 0 | SHF(k,rot,5) \ |
| | SHF(k,rot,6) | SHF(k,rot,7) | SHF(k,rot,8); \ |
| \ |
| const uint32_t w0 = w[p0], w1 = w[p1], \ |
| w3 = w[p3], w4 = w[p4], w5 = w[p5], \ |
| w7 = w[p7] |
| |
| /* Assuming p0..p8 is mapped to pixels 0..8, this function interpolates the |
| * top-left pixel in the total of the 2x2 pixels to interpolates. The function |
| * is also used for the 3 other pixels */ |
| static av_always_inline uint32_t hq2x_interp_1x1(const uint32_t *r2y, int k, |
| const uint32_t *w, |
| int p0, int p1, int p2, |
| int p3, int p4, int p5, |
| int p6, int p7, int p8) |
| { |
| INTERP_BOOTSTRAP(0); |
| |
| if ((P(0xbf,0x37) || P(0xdb,0x13)) && WDIFF(w1, w5)) |
| return interp_2px(w4, 3, w3, 1, 2); |
| if ((P(0xdb,0x49) || P(0xef,0x6d)) && WDIFF(w7, w3)) |
| return interp_2px(w4, 3, w1, 1, 2); |
| if ((P(0x0b,0x0b) || P(0xfe,0x4a) || P(0xfe,0x1a)) && WDIFF(w3, w1)) |
| return w4; |
| if ((P(0x6f,0x2a) || P(0x5b,0x0a) || P(0xbf,0x3a) || P(0xdf,0x5a) || |
| P(0x9f,0x8a) || P(0xcf,0x8a) || P(0xef,0x4e) || P(0x3f,0x0e) || |
| P(0xfb,0x5a) || P(0xbb,0x8a) || P(0x7f,0x5a) || P(0xaf,0x8a) || |
| P(0xeb,0x8a)) && WDIFF(w3, w1)) |
| return interp_2px(w4, 3, w0, 1, 2); |
| if (P(0x0b,0x08)) |
| return interp_3px(w4, 2, w0, 1, w1, 1, 2); |
| if (P(0x0b,0x02)) |
| return interp_3px(w4, 2, w0, 1, w3, 1, 2); |
| if (P(0x2f,0x2f)) |
| return interp_3px(w4, 14, w3, 1, w1, 1, 4); |
| if (P(0xbf,0x37) || P(0xdb,0x13)) |
| return interp_3px(w4, 5, w1, 2, w3, 1, 3); |
| if (P(0xdb,0x49) || P(0xef,0x6d)) |
| return interp_3px(w4, 5, w3, 2, w1, 1, 3); |
| if (P(0x1b,0x03) || P(0x4f,0x43) || P(0x8b,0x83) || P(0x6b,0x43)) |
| return interp_2px(w4, 3, w3, 1, 2); |
| if (P(0x4b,0x09) || P(0x8b,0x89) || P(0x1f,0x19) || P(0x3b,0x19)) |
| return interp_2px(w4, 3, w1, 1, 2); |
| if (P(0x7e,0x2a) || P(0xef,0xab) || P(0xbf,0x8f) || P(0x7e,0x0e)) |
| return interp_3px(w4, 2, w3, 3, w1, 3, 3); |
| if (P(0xfb,0x6a) || P(0x6f,0x6e) || P(0x3f,0x3e) || P(0xfb,0xfa) || |
| P(0xdf,0xde) || P(0xdf,0x1e)) |
| return interp_2px(w4, 3, w0, 1, 2); |
| if (P(0x0a,0x00) || P(0x4f,0x4b) || P(0x9f,0x1b) || P(0x2f,0x0b) || |
| P(0xbe,0x0a) || P(0xee,0x0a) || P(0x7e,0x0a) || P(0xeb,0x4b) || |
| P(0x3b,0x1b)) |
| return interp_3px(w4, 2, w3, 1, w1, 1, 2); |
| return interp_3px(w4, 6, w3, 1, w1, 1, 3); |
| } |
| |
| /* Assuming p0..p8 is mapped to pixels 0..8, this function interpolates the |
| * top-left and top-center pixel in the total of the 3x3 pixels to |
| * interpolates. The function is also used for the 3 other couples of pixels |
| * defining the outline. The center pixel is not defined through this function, |
| * since it's just the same as the original value. */ |
| static av_always_inline void hq3x_interp_2x1(uint32_t *dst, int dst_linesize, |
| const uint32_t *r2y, int k, |
| const uint32_t *w, |
| int pos00, int pos01, |
| int p0, int p1, int p2, |
| int p3, int p4, int p5, |
| int p6, int p7, int p8, |
| int rotate) |
| { |
| INTERP_BOOTSTRAP(rotate); |
| |
| uint32_t *dst00 = &dst[dst_linesize*(pos00>>1) + (pos00&1)]; |
| uint32_t *dst01 = &dst[dst_linesize*(pos01>>1) + (pos01&1)]; |
| |
| if ((P(0xdb,0x49) || P(0xef,0x6d)) && WDIFF(w7, w3)) |
| *dst00 = interp_2px(w4, 3, w1, 1, 2); |
| else if ((P(0xbf,0x37) || P(0xdb,0x13)) && WDIFF(w1, w5)) |
| *dst00 = interp_2px(w4, 3, w3, 1, 2); |
| else if ((P(0x0b,0x0b) || P(0xfe,0x4a) || P(0xfe,0x1a)) && WDIFF(w3, w1)) |
| *dst00 = w4; |
| else if ((P(0x6f,0x2a) || P(0x5b,0x0a) || P(0xbf,0x3a) || P(0xdf,0x5a) || |
| P(0x9f,0x8a) || P(0xcf,0x8a) || P(0xef,0x4e) || P(0x3f,0x0e) || |
| P(0xfb,0x5a) || P(0xbb,0x8a) || P(0x7f,0x5a) || P(0xaf,0x8a) || |
| P(0xeb,0x8a)) && WDIFF(w3, w1)) |
| *dst00 = interp_2px(w4, 3, w0, 1, 2); |
| else if (P(0x4b,0x09) || P(0x8b,0x89) || P(0x1f,0x19) || P(0x3b,0x19)) |
| *dst00 = interp_2px(w4, 3, w1, 1, 2); |
| else if (P(0x1b,0x03) || P(0x4f,0x43) || P(0x8b,0x83) || P(0x6b,0x43)) |
| *dst00 = interp_2px(w4, 3, w3, 1, 2); |
| else if (P(0x7e,0x2a) || P(0xef,0xab) || P(0xbf,0x8f) || P(0x7e,0x0e)) |
| *dst00 = interp_2px(w3, 1, w1, 1, 1); |
| else if (P(0x4f,0x4b) || P(0x9f,0x1b) || P(0x2f,0x0b) || P(0xbe,0x0a) || |
| P(0xee,0x0a) || P(0x7e,0x0a) || P(0xeb,0x4b) || P(0x3b,0x1b)) |
| *dst00 = interp_3px(w4, 2, w3, 7, w1, 7, 4); |
| else if (P(0x0b,0x08) || P(0xf9,0x68) || P(0xf3,0x62) || P(0x6d,0x6c) || |
| P(0x67,0x66) || P(0x3d,0x3c) || P(0x37,0x36) || P(0xf9,0xf8) || |
| P(0xdd,0xdc) || P(0xf3,0xf2) || P(0xd7,0xd6) || P(0xdd,0x1c) || |
| P(0xd7,0x16) || P(0x0b,0x02)) |
| *dst00 = interp_2px(w4, 3, w0, 1, 2); |
| else |
| *dst00 = interp_3px(w4, 2, w3, 1, w1, 1, 2); |
| |
| if ((P(0xfe,0xde) || P(0x9e,0x16) || P(0xda,0x12) || P(0x17,0x16) || |
| P(0x5b,0x12) || P(0xbb,0x12)) && WDIFF(w1, w5)) |
| *dst01 = w4; |
| else if ((P(0x0f,0x0b) || P(0x5e,0x0a) || P(0xfb,0x7b) || P(0x3b,0x0b) || |
| P(0xbe,0x0a) || P(0x7a,0x0a)) && WDIFF(w3, w1)) |
| *dst01 = w4; |
| else if (P(0xbf,0x8f) || P(0x7e,0x0e) || P(0xbf,0x37) || P(0xdb,0x13)) |
| *dst01 = interp_2px(w1, 3, w4, 1, 2); |
| else if (P(0x02,0x00) || P(0x7c,0x28) || P(0xed,0xa9) || P(0xf5,0xb4) || |
| P(0xd9,0x90)) |
| *dst01 = interp_2px(w4, 3, w1, 1, 2); |
| else if (P(0x4f,0x4b) || P(0xfb,0x7b) || P(0xfe,0x7e) || P(0x9f,0x1b) || |
| P(0x2f,0x0b) || P(0xbe,0x0a) || P(0x7e,0x0a) || P(0xfb,0x4b) || |
| P(0xfb,0xdb) || P(0xfe,0xde) || P(0xfe,0x56) || P(0x57,0x56) || |
| P(0x97,0x16) || P(0x3f,0x1e) || P(0xdb,0x12) || P(0xbb,0x12)) |
| *dst01 = interp_2px(w4, 7, w1, 1, 3); |
| else |
| *dst01 = w4; |
| } |
| |
| /* Assuming p0..p8 is mapped to pixels 0..8, this function interpolates the |
| * top-left block of 2x2 pixels in the total of the 4x4 pixels (or 4 blocks) to |
| * interpolates. The function is also used for the 3 other blocks of 2x2 |
| * pixels. */ |
| static av_always_inline void hq4x_interp_2x2(uint32_t *dst, int dst_linesize, |
| const uint32_t *r2y, int k, |
| const uint32_t *w, |
| int pos00, int pos01, |
| int pos10, int pos11, |
| int p0, int p1, int p2, |
| int p3, int p4, int p5, |
| int p6, int p7, int p8) |
| { |
| INTERP_BOOTSTRAP(0); |
| |
| uint32_t *dst00 = &dst[dst_linesize*(pos00>>1) + (pos00&1)]; |
| uint32_t *dst01 = &dst[dst_linesize*(pos01>>1) + (pos01&1)]; |
| uint32_t *dst10 = &dst[dst_linesize*(pos10>>1) + (pos10&1)]; |
| uint32_t *dst11 = &dst[dst_linesize*(pos11>>1) + (pos11&1)]; |
| |
| const int cond00 = (P(0xbf,0x37) || P(0xdb,0x13)) && WDIFF(w1, w5); |
| const int cond01 = (P(0xdb,0x49) || P(0xef,0x6d)) && WDIFF(w7, w3); |
| const int cond02 = (P(0x6f,0x2a) || P(0x5b,0x0a) || P(0xbf,0x3a) || |
| P(0xdf,0x5a) || P(0x9f,0x8a) || P(0xcf,0x8a) || |
| P(0xef,0x4e) || P(0x3f,0x0e) || P(0xfb,0x5a) || |
| P(0xbb,0x8a) || P(0x7f,0x5a) || P(0xaf,0x8a) || |
| P(0xeb,0x8a)) && WDIFF(w3, w1); |
| const int cond03 = P(0xdb,0x49) || P(0xef,0x6d); |
| const int cond04 = P(0xbf,0x37) || P(0xdb,0x13); |
| const int cond05 = P(0x1b,0x03) || P(0x4f,0x43) || P(0x8b,0x83) || |
| P(0x6b,0x43); |
| const int cond06 = P(0x4b,0x09) || P(0x8b,0x89) || P(0x1f,0x19) || |
| P(0x3b,0x19); |
| const int cond07 = P(0x0b,0x08) || P(0xf9,0x68) || P(0xf3,0x62) || |
| P(0x6d,0x6c) || P(0x67,0x66) || P(0x3d,0x3c) || |
| P(0x37,0x36) || P(0xf9,0xf8) || P(0xdd,0xdc) || |
| P(0xf3,0xf2) || P(0xd7,0xd6) || P(0xdd,0x1c) || |
| P(0xd7,0x16) || P(0x0b,0x02); |
| const int cond08 = (P(0x0f,0x0b) || P(0x2b,0x0b) || P(0xfe,0x4a) || |
| P(0xfe,0x1a)) && WDIFF(w3, w1); |
| const int cond09 = P(0x2f,0x2f); |
| const int cond10 = P(0x0a,0x00); |
| const int cond11 = P(0x0b,0x09); |
| const int cond12 = P(0x7e,0x2a) || P(0xef,0xab); |
| const int cond13 = P(0xbf,0x8f) || P(0x7e,0x0e); |
| const int cond14 = P(0x4f,0x4b) || P(0x9f,0x1b) || P(0x2f,0x0b) || |
| P(0xbe,0x0a) || P(0xee,0x0a) || P(0x7e,0x0a) || |
| P(0xeb,0x4b) || P(0x3b,0x1b); |
| const int cond15 = P(0x0b,0x03); |
| |
| if (cond00) |
| *dst00 = interp_2px(w4, 5, w3, 3, 3); |
| else if (cond01) |
| *dst00 = interp_2px(w4, 5, w1, 3, 3); |
| else if ((P(0x0b,0x0b) || P(0xfe,0x4a) || P(0xfe,0x1a)) && WDIFF(w3, w1)) |
| *dst00 = w4; |
| else if (cond02) |
| *dst00 = interp_2px(w4, 5, w0, 3, 3); |
| else if (cond03) |
| *dst00 = interp_2px(w4, 3, w3, 1, 2); |
| else if (cond04) |
| *dst00 = interp_2px(w4, 3, w1, 1, 2); |
| else if (cond05) |
| *dst00 = interp_2px(w4, 5, w3, 3, 3); |
| else if (cond06) |
| *dst00 = interp_2px(w4, 5, w1, 3, 3); |
| else if (P(0x0f,0x0b) || P(0x5e,0x0a) || P(0x2b,0x0b) || P(0xbe,0x0a) || |
| P(0x7a,0x0a) || P(0xee,0x0a)) |
| *dst00 = interp_2px(w1, 1, w3, 1, 1); |
| else if (cond07) |
| *dst00 = interp_2px(w4, 5, w0, 3, 3); |
| else |
| *dst00 = interp_3px(w4, 2, w1, 1, w3, 1, 2); |
| |
| if (cond00) |
| *dst01 = interp_2px(w4, 7, w3, 1, 3); |
| else if (cond08) |
| *dst01 = w4; |
| else if (cond02) |
| *dst01 = interp_2px(w4, 3, w0, 1, 2); |
| else if (cond09) |
| *dst01 = w4; |
| else if (cond10) |
| *dst01 = interp_3px(w4, 5, w1, 2, w3, 1, 3); |
| else if (P(0x0b,0x08)) |
| *dst01 = interp_3px(w4, 5, w1, 2, w0, 1, 3); |
| else if (cond11) |
| *dst01 = interp_2px(w4, 5, w1, 3, 3); |
| else if (cond04) |
| *dst01 = interp_2px(w1, 3, w4, 1, 2); |
| else if (cond12) |
| *dst01 = interp_3px(w1, 2, w4, 1, w3, 1, 2); |
| else if (cond13) |
| *dst01 = interp_2px(w1, 5, w3, 3, 3); |
| else if (cond05) |
| *dst01 = interp_2px(w4, 7, w3, 1, 3); |
| else if (P(0xf3,0x62) || P(0x67,0x66) || P(0x37,0x36) || P(0xf3,0xf2) || |
| P(0xd7,0xd6) || P(0xd7,0x16) || P(0x0b,0x02)) |
| *dst01 = interp_2px(w4, 3, w0, 1, 2); |
| else if (cond14) |
| *dst01 = interp_2px(w1, 1, w4, 1, 1); |
| else |
| *dst01 = interp_2px(w4, 3, w1, 1, 2); |
| |
| if (cond01) |
| *dst10 = interp_2px(w4, 7, w1, 1, 3); |
| else if (cond08) |
| *dst10 = w4; |
| else if (cond02) |
| *dst10 = interp_2px(w4, 3, w0, 1, 2); |
| else if (cond09) |
| *dst10 = w4; |
| else if (cond10) |
| *dst10 = interp_3px(w4, 5, w3, 2, w1, 1, 3); |
| else if (P(0x0b,0x02)) |
| *dst10 = interp_3px(w4, 5, w3, 2, w0, 1, 3); |
| else if (cond15) |
| *dst10 = interp_2px(w4, 5, w3, 3, 3); |
| else if (cond03) |
| *dst10 = interp_2px(w3, 3, w4, 1, 2); |
| else if (cond13) |
| *dst10 = interp_3px(w3, 2, w4, 1, w1, 1, 2); |
| else if (cond12) |
| *dst10 = interp_2px(w3, 5, w1, 3, 3); |
| else if (cond06) |
| *dst10 = interp_2px(w4, 7, w1, 1, 3); |
| else if (P(0x0b,0x08) || P(0xf9,0x68) || P(0x6d,0x6c) || P(0x3d,0x3c) || |
| P(0xf9,0xf8) || P(0xdd,0xdc) || P(0xdd,0x1c)) |
| *dst10 = interp_2px(w4, 3, w0, 1, 2); |
| else if (cond14) |
| *dst10 = interp_2px(w3, 1, w4, 1, 1); |
| else |
| *dst10 = interp_2px(w4, 3, w3, 1, 2); |
| |
| if ((P(0x7f,0x2b) || P(0xef,0xab) || P(0xbf,0x8f) || P(0x7f,0x0f)) && |
| WDIFF(w3, w1)) |
| *dst11 = w4; |
| else if (cond02) |
| *dst11 = interp_2px(w4, 7, w0, 1, 3); |
| else if (cond15) |
| *dst11 = interp_2px(w4, 7, w3, 1, 3); |
| else if (cond11) |
| *dst11 = interp_2px(w4, 7, w1, 1, 3); |
| else if (P(0x0a,0x00) || P(0x7e,0x2a) || P(0xef,0xab) || P(0xbf,0x8f) || |
| P(0x7e,0x0e)) |
| *dst11 = interp_3px(w4, 6, w3, 1, w1, 1, 3); |
| else if (cond07) |
| *dst11 = interp_2px(w4, 7, w0, 1, 3); |
| else |
| *dst11 = w4; |
| } |
| |
| static av_always_inline void hqx_filter(const ThreadData *td, int jobnr, int nb_jobs, int n) |
| { |
| int x, y; |
| AVFrame *in = td->in, *out = td->out; |
| const uint32_t *r2y = td->rgbtoyuv; |
| const int height = in->height; |
| const int width = in->width; |
| const int slice_start = (height * jobnr ) / nb_jobs; |
| const int slice_end = (height * (jobnr+1)) / nb_jobs; |
| const int dst_linesize = out->linesize[0]; |
| const int src_linesize = in->linesize[0]; |
| uint8_t *dst = out->data[0] + slice_start * dst_linesize * n; |
| const uint8_t *src = in->data[0] + slice_start * src_linesize; |
| |
| const int dst32_linesize = dst_linesize >> 2; |
| const int src32_linesize = src_linesize >> 2; |
| |
| for (y = slice_start; y < slice_end; y++) { |
| const uint32_t *src32 = (const uint32_t *)src; |
| uint32_t *dst32 = (uint32_t *)dst; |
| const int prevline = y > 0 ? -src32_linesize : 0; |
| const int nextline = y < height - 1 ? src32_linesize : 0; |
| |
| for (x = 0; x < width; x++) { |
| const int prevcol = x > 0 ? -1 : 0; |
| const int nextcol = x < width -1 ? 1 : 0; |
| const uint32_t w[3*3] = { |
| src32[prevcol + prevline], src32[prevline], src32[prevline + nextcol], |
| src32[prevcol ], src32[ 0], src32[ nextcol], |
| src32[prevcol + nextline], src32[nextline], src32[nextline + nextcol] |
| }; |
| const uint32_t yuv1 = rgb2yuv(r2y, w[4]); |
| const int pattern = (w[4] != w[0] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[0]))) : 0) |
| | (w[4] != w[1] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[1]))) : 0) << 1 |
| | (w[4] != w[2] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[2]))) : 0) << 2 |
| | (w[4] != w[3] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[3]))) : 0) << 3 |
| | (w[4] != w[5] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[5]))) : 0) << 4 |
| | (w[4] != w[6] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[6]))) : 0) << 5 |
| | (w[4] != w[7] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[7]))) : 0) << 6 |
| | (w[4] != w[8] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[8]))) : 0) << 7; |
| |
| if (n == 2) { |
| dst32[dst32_linesize*0 + 0] = hq2x_interp_1x1(r2y, pattern, w, 0,1,2,3,4,5,6,7,8); // 00 |
| dst32[dst32_linesize*0 + 1] = hq2x_interp_1x1(r2y, pattern, w, 2,1,0,5,4,3,8,7,6); // 01 (vert mirrored) |
| dst32[dst32_linesize*1 + 0] = hq2x_interp_1x1(r2y, pattern, w, 6,7,8,3,4,5,0,1,2); // 10 (horiz mirrored) |
| dst32[dst32_linesize*1 + 1] = hq2x_interp_1x1(r2y, pattern, w, 8,7,6,5,4,3,2,1,0); // 11 (center mirrored) |
| } else if (n == 3) { |
| hq3x_interp_2x1(dst32, dst32_linesize, r2y, pattern, w, 0,1, 0,1,2,3,4,5,6,7,8, 0); // 00 01 |
| hq3x_interp_2x1(dst32 + 1, dst32_linesize, r2y, pattern, w, 1,3, 2,5,8,1,4,7,0,3,6, 1); // 02 12 (rotated to the right) |
| hq3x_interp_2x1(dst32 + 1*dst32_linesize, dst32_linesize, r2y, pattern, w, 2,0, 6,3,0,7,4,1,8,5,2, 1); // 20 10 (rotated to the left) |
| hq3x_interp_2x1(dst32 + 1*dst32_linesize + 1, dst32_linesize, r2y, pattern, w, 3,2, 8,7,6,5,4,3,2,1,0, 0); // 22 21 (center mirrored) |
| dst32[dst32_linesize + 1] = w[4]; // 11 |
| } else if (n == 4) { |
| hq4x_interp_2x2(dst32, dst32_linesize, r2y, pattern, w, 0,1,2,3, 0,1,2,3,4,5,6,7,8); // 00 01 10 11 |
| hq4x_interp_2x2(dst32 + 2, dst32_linesize, r2y, pattern, w, 1,0,3,2, 2,1,0,5,4,3,8,7,6); // 02 03 12 13 (vert mirrored) |
| hq4x_interp_2x2(dst32 + 2*dst32_linesize, dst32_linesize, r2y, pattern, w, 2,3,0,1, 6,7,8,3,4,5,0,1,2); // 20 21 30 31 (horiz mirrored) |
| hq4x_interp_2x2(dst32 + 2*dst32_linesize + 2, dst32_linesize, r2y, pattern, w, 3,2,1,0, 8,7,6,5,4,3,2,1,0); // 22 23 32 33 (center mirrored) |
| } else { |
| av_assert0(0); |
| } |
| |
| src32 += 1; |
| dst32 += n; |
| } |
| |
| src += src_linesize; |
| dst += dst_linesize * n; |
| } |
| } |
| |
| #define HQX_FUNC(size) \ |
| static int hq##size##x(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \ |
| { \ |
| hqx_filter(arg, jobnr, nb_jobs, size); \ |
| return 0; \ |
| } |
| |
| HQX_FUNC(2) |
| HQX_FUNC(3) |
| HQX_FUNC(4) |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum AVPixelFormat pix_fmts[] = {AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE}; |
| ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); |
| return 0; |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| HQXContext *hqx = ctx->priv; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| |
| outlink->w = inlink->w * hqx->n; |
| outlink->h = inlink->h * hqx->n; |
| av_log(inlink->dst, AV_LOG_VERBOSE, "fmt:%s size:%dx%d -> size:%dx%d\n", |
| av_get_pix_fmt_name(inlink->format), |
| inlink->w, inlink->h, outlink->w, outlink->h); |
| return 0; |
| } |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| HQXContext *hqx = ctx->priv; |
| ThreadData td; |
| AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) { |
| av_frame_free(&in); |
| return AVERROR(ENOMEM); |
| } |
| av_frame_copy_props(out, in); |
| out->width = outlink->w; |
| out->height = outlink->h; |
| |
| td.in = in; |
| td.out = out; |
| td.rgbtoyuv = hqx->rgbtoyuv; |
| ctx->internal->execute(ctx, hqx->func, &td, NULL, FFMIN(inlink->h, ctx->graph->nb_threads)); |
| |
| av_frame_free(&in); |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static av_cold int init(AVFilterContext *ctx) |
| { |
| HQXContext *hqx = ctx->priv; |
| static const hqxfunc_t hqxfuncs[] = {hq2x, hq3x, hq4x}; |
| |
| uint32_t c; |
| int bg, rg, g; |
| |
| for (bg=-255; bg<256; bg++) { |
| for (rg=-255; rg<256; rg++) { |
| const uint32_t u = (uint32_t)((-169*rg + 500*bg)/1000) + 128; |
| const uint32_t v = (uint32_t)(( 500*rg - 81*bg)/1000) + 128; |
| int startg = FFMAX3(-bg, -rg, 0); |
| int endg = FFMIN3(255-bg, 255-rg, 255); |
| uint32_t y = (uint32_t)(( 299*rg + 1000*startg + 114*bg)/1000); |
| c = bg + (rg<<16) + 0x010101 * startg; |
| for (g = startg; g <= endg; g++) { |
| hqx->rgbtoyuv[c] = ((y++) << 16) + (u << 8) + v; |
| c+= 0x010101; |
| } |
| } |
| } |
| |
| hqx->func = hqxfuncs[hqx->n - 2]; |
| return 0; |
| } |
| |
| static const AVFilterPad hqx_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad hqx_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_hqx = { |
| .name = "hqx", |
| .description = NULL_IF_CONFIG_SMALL("Scale the input by 2, 3 or 4 using the hq*x magnification algorithm."), |
| .priv_size = sizeof(HQXContext), |
| .init = init, |
| .query_formats = query_formats, |
| .inputs = hqx_inputs, |
| .outputs = hqx_outputs, |
| .priv_class = &hqx_class, |
| .flags = AVFILTER_FLAG_SLICE_THREADS, |
| }; |
