mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
a69a0b689c
This should make future extensibility easier. Signed-off-by: Marton Balint <cus@passwd.hu>
154 lines
6.5 KiB
C
154 lines
6.5 KiB
C
/*
|
|
* Copyright (c) 2013 Paul B Mahol
|
|
*
|
|
* 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/common.h"
|
|
#include "libavutil/intfloat.h"
|
|
#include "avfilter.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
#include "blend.h"
|
|
|
|
#undef PIXEL
|
|
#undef MAX
|
|
#undef HALF
|
|
#undef CLIP
|
|
|
|
#if DEPTH == 8
|
|
#define PIXEL uint8_t
|
|
#define MAX 255
|
|
#define HALF 128
|
|
#define CLIP(x) (av_clip_uint8(x))
|
|
#elif DEPTH == 32
|
|
#define PIXEL float
|
|
#define MAX 1.f
|
|
#define HALF 0.5f
|
|
#define CLIP(x) (x)
|
|
#else
|
|
#define PIXEL uint16_t
|
|
#define MAX ((1 << DEPTH) - 1)
|
|
#define HALF (1 << (DEPTH - 1))
|
|
#define CLIP(x) ((int)av_clip_uintp2(x, DEPTH))
|
|
#endif
|
|
|
|
#undef MULTIPLY
|
|
#undef SCREEN
|
|
#undef BURN
|
|
#undef DODGE
|
|
#undef GEOMETRIC
|
|
#undef INT2FLOAT
|
|
#undef FLOAT2INT
|
|
#undef MDIV
|
|
#undef LRINTF
|
|
|
|
#if DEPTH < 32
|
|
#define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / MAX))
|
|
#define SCREEN(x, a, b) (MAX - (x) * ((MAX - (a)) * (MAX - (b)) / MAX))
|
|
#define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, MAX - ((MAX - (b)) << DEPTH) / (a)))
|
|
#define DODGE(a, b) (((a) == MAX) ? (a) : FFMIN(MAX, (((b) << DEPTH) / (MAX - (a)))))
|
|
#define GEOMETRIC(a, b) (lrintf(sqrtf((unsigned)A * B)))
|
|
#define INT2FLOAT(x) (x)
|
|
#define FLOAT2INT(x) (x)
|
|
#define MDIV (0.125f * (1 << DEPTH))
|
|
#define LRINTF(x) lrintf(x)
|
|
#else
|
|
#define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 1.0))
|
|
#define SCREEN(x, a, b) (1.0 - (x) * ((1.0 - (a)) * (1.0 - (b)) / 1.0))
|
|
#define BURN(a, b) (((a) <= 0.0) ? (a) : FFMAX(0.0, 1.0 - (1.0 - (b)) / (a)))
|
|
#define DODGE(a, b) (((a) >= 1.0) ? (a) : FFMIN(1.0, ((b) / (1.0 - (a)))))
|
|
#define GEOMETRIC(a, b) (sqrtf(fmaxf(A, 0) * fmaxf(B, 0)))
|
|
#define INT2FLOAT(x) av_int2float(x)
|
|
#define FLOAT2INT(x) av_float2int(x)
|
|
#define MDIV 0.125f
|
|
#define LRINTF(x) (x)
|
|
#endif
|
|
|
|
#define A top[j]
|
|
#define B bottom[j]
|
|
|
|
#define fn2(a, b) blend_##a##_##b##bit
|
|
#define fn1(name, depth) fn2(name, depth)
|
|
#define fn0(name) fn1(name, DEPTH)
|
|
|
|
#define fn(NAME, EXPR) \
|
|
static void fn0(NAME)(const uint8_t *_top, ptrdiff_t top_linesize, \
|
|
const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
|
|
uint8_t *_dst, ptrdiff_t dst_linesize, \
|
|
ptrdiff_t width, ptrdiff_t height, \
|
|
FilterParams *param, SliceParams *sliceparam) \
|
|
{ \
|
|
const PIXEL *top = (const PIXEL *)_top; \
|
|
const PIXEL *bottom = (const PIXEL *)_bottom; \
|
|
PIXEL *dst = (PIXEL *)_dst; \
|
|
const float opacity = param->opacity; \
|
|
\
|
|
dst_linesize /= sizeof(PIXEL); \
|
|
top_linesize /= sizeof(PIXEL); \
|
|
bottom_linesize /= sizeof(PIXEL); \
|
|
\
|
|
for (int i = 0; i < height; i++) { \
|
|
for (int j = 0; j < width; j++) { \
|
|
dst[j] = top[j] + ((EXPR)-top[j]) * opacity; \
|
|
} \
|
|
dst += dst_linesize; \
|
|
top += top_linesize; \
|
|
bottom += bottom_linesize; \
|
|
} \
|
|
}
|
|
|
|
fn(addition, FFMIN(MAX, A + B))
|
|
fn(grainmerge, CLIP(A + B - HALF))
|
|
fn(average, (A + B) / 2)
|
|
fn(subtract, FFMAX(0, A - B))
|
|
fn(multiply, MULTIPLY(1, A, B))
|
|
fn(multiply128,CLIP((A - HALF) * B / MDIV + HALF))
|
|
fn(negation, MAX - FFABS(MAX - A - B))
|
|
fn(extremity, FFABS(MAX - A - B))
|
|
fn(difference, FFABS(A - B))
|
|
fn(grainextract, CLIP(HALF + A - B))
|
|
fn(screen, SCREEN(1, A, B))
|
|
fn(overlay, (A < HALF) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
|
|
fn(hardlight, (B < HALF) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
|
|
fn(hardmix, (A < (MAX - B)) ? 0: MAX)
|
|
fn(heat, (A == 0) ? 0 : MAX - FFMIN(((MAX - B) * (MAX - B)) / A, MAX))
|
|
fn(freeze, (B == 0) ? 0 : MAX - FFMIN(((MAX - A) * (MAX - A)) / B, MAX))
|
|
fn(darken, FFMIN(A, B))
|
|
fn(lighten, FFMAX(A, B))
|
|
fn(divide, CLIP(B == 0 ? MAX : MAX * A / B))
|
|
fn(dodge, DODGE(A, B))
|
|
fn(burn, BURN(A, B))
|
|
fn(softlight, CLIP(A * A / MAX + (2 * (B * ((A * (MAX - A)) / MAX) / MAX))))
|
|
fn(exclusion, A + B - 2 * A * B / MAX)
|
|
fn(pinlight, (B < HALF) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - HALF)))
|
|
fn(phoenix, FFMIN(A, B) - FFMAX(A, B) + MAX)
|
|
fn(reflect, (B == MAX) ? B : FFMIN(MAX, (A * A / (MAX - B))))
|
|
fn(glow, (A == MAX) ? A : FFMIN(MAX, (B * B / (MAX - A))))
|
|
fn(and, INT2FLOAT(FLOAT2INT(A) & FLOAT2INT(B)))
|
|
fn(or, INT2FLOAT(FLOAT2INT(A) | FLOAT2INT(B)))
|
|
fn(xor, INT2FLOAT(FLOAT2INT(A) ^ FLOAT2INT(B)))
|
|
fn(vividlight, (A < HALF) ? BURN(2 * A, B) : DODGE(2 * (A - HALF), B))
|
|
fn(linearlight,CLIP((B < HALF) ? B + 2 * A - MAX : B + 2 * (A - HALF)))
|
|
fn(softdifference,CLIP((A > B) ? (B == MAX) ? 0 : (A - B) * MAX / (MAX - B) : (B == 0) ? 0 : (B - A) * MAX / B))
|
|
fn(geometric, GEOMETRIC(A, B))
|
|
fn(harmonic, A == 0 && B == 0 ? 0 : 2LL * A * B / (A + B))
|
|
fn(bleach, (MAX - B) + (MAX - A) - MAX)
|
|
fn(stain, 2 * MAX - A - B)
|
|
fn(interpolate,LRINTF(MAX * (2 - cosf(A * M_PI / MAX) - cosf(B * M_PI / MAX)) * 0.25f))
|
|
fn(hardoverlay,A == MAX ? MAX : FFMIN(MAX, MAX * B / (2 * MAX - 2 * A) * (A > HALF) + 2 * A * B / MAX * (A <= HALF)))
|