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avfilter/vf_blend: add support for float formats

This commit is contained in:
Paul B Mahol 2020-05-26 23:07:36 +02:00
parent 6c33a230e4
commit d5f87f8567
1 changed files with 108 additions and 4 deletions
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112
libavfilter/vf_blend.c
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@ -19,6 +19,7 @@
*/
#include "libavutil/imgutils.h"
#include "libavutil/intfloat.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/pixfmt.h"
@ -138,6 +139,9 @@ COPY(bottom, 8)
COPY(top, 16)
COPY(bottom, 16)
COPY(top, 32)
COPY(bottom, 32)
#undef COPY
static void blend_normal_8bit(const uint8_t *top, ptrdiff_t top_linesize,
@ -184,6 +188,31 @@ static void blend_normal_16bit(const uint8_t *_top, ptrdiff_t top_linesize,
}
}
static void blend_normal_32bit(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, double *values, int starty)
{
const float *top = (float*)_top;
const float *bottom = (float*)_bottom;
float *dst = (float*)_dst;
const double opacity = param->opacity;
int i, j;
dst_linesize /= 4;
top_linesize /= 4;
bottom_linesize /= 4;
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
}
dst += dst_linesize;
top += top_linesize;
bottom += bottom_linesize;
}
}
#define DEFINE_BLEND8(name, expr) \
static void blend_## name##_8bit(const uint8_t *top, ptrdiff_t top_linesize, \
const uint8_t *bottom, ptrdiff_t bottom_linesize, \
@ -230,6 +259,32 @@ static void blend_## name##_##depth##bit(const uint8_t *_top, ptrdiff_t top_line
} \
}
#define DEFINE_BLEND32(name, expr, depth) \
static void blend_## name##_##depth##bit(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, double *values, int starty) \
{ \
const float *top = (const float*)_top; \
const float *bottom = (const float*)_bottom; \
float *dst = (float*)_dst; \
double opacity = param->opacity; \
int i, j; \
dst_linesize /= 4; \
top_linesize /= 4; \
bottom_linesize /= 4; \
\
for (i = 0; i < height; i++) { \
for (j = 0; j < width; j++) { \
dst[j] = top[j] + ((expr) - top[j]) * opacity; \
} \
dst += dst_linesize; \
top += top_linesize; \
bottom += bottom_linesize; \
} \
}
#define A top[j]
#define B bottom[j]
@ -443,6 +498,49 @@ DEFINE_BLEND16(xor, A ^ B, 9)
DEFINE_BLEND16(vividlight, (A < 256) ? BURN(2 * A, B) : DODGE(2 * (A - 256), B), 9)
DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 256) ? B + 2 * A - 511 : B + 2 * (A - 256), 9), 9)
#undef MULTIPLY
#undef SCREEN
#undef BURN
#undef DODGE
#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_BLEND32(addition, A + B, 32)
DEFINE_BLEND32(grainmerge, A + B - 0.5, 32)
DEFINE_BLEND32(average, (A + B) / 2, 32)
DEFINE_BLEND32(subtract, A - B, 32)
DEFINE_BLEND32(multiply, A * B, 32)
DEFINE_BLEND32(multiply128, (A - 0.5) * B / 0.125 + 0.5, 32)
DEFINE_BLEND32(negation, 1.0 - FFABS(1.0 - A - B), 32)
DEFINE_BLEND32(extremity, FFABS(1.0 - A - B), 32)
DEFINE_BLEND32(difference, FFABS(A - B), 32)
DEFINE_BLEND32(grainextract, 0.5 + A - B, 32)
DEFINE_BLEND32(screen, SCREEN(1, A, B), 32)
DEFINE_BLEND32(overlay, (A < 0.5) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 32)
DEFINE_BLEND32(hardlight, (B < 0.5) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 32)
DEFINE_BLEND32(hardmix, (A < (1.0 - B)) ? 0: 1.0, 32)
DEFINE_BLEND32(heat, (A == 0) ? 0 : 1.0 - FFMIN(((1.0 - B) * (1.0 - B)) / A, 1.0), 32)
DEFINE_BLEND32(freeze, (B == 0) ? 0 : 1.0 - FFMIN(((1.0 - A) * (1.0 - A)) / B, 1.0), 32)
DEFINE_BLEND32(darken, FFMIN(A, B), 32)
DEFINE_BLEND32(lighten, FFMAX(A, B), 32)
DEFINE_BLEND32(divide, B == 0 ? 1.0 : 1.0 * A / B, 32)
DEFINE_BLEND32(dodge, DODGE(A, B), 32)
DEFINE_BLEND32(burn, BURN(A, B), 32)
DEFINE_BLEND32(softlight, (A > 0.5) ? B + (1.0 - B) * (A - 0.5) / 0.5 * (0.5 - fabs(B - 0.5) / 1.0): B - B * ((0.5 - A) / 0.5) * (0.5 - fabs(B - 0.5)/1.0), 32)
DEFINE_BLEND32(exclusion, A + B - 2 * A * B / 1.0, 32)
DEFINE_BLEND32(pinlight, (B < 0.5) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 0.5)), 32)
DEFINE_BLEND32(phoenix, FFMIN(A, B) - FFMAX(A, B) + 1.0, 32)
DEFINE_BLEND32(reflect, (B == 1.0) ? B : FFMIN(1.0, (A * A / (1.0 - B))), 32)
DEFINE_BLEND32(glow, (A == 1.0) ? A : FFMIN(1.0, (B * B / (1.0 - A))), 32)
DEFINE_BLEND32(and, av_int2float(av_float2int(A) & av_float2int(B)), 32)
DEFINE_BLEND32(or, av_int2float(av_float2int(A) | av_float2int(B)), 32)
DEFINE_BLEND32(xor, av_int2float(av_float2int(A) ^ av_float2int(B)), 32)
DEFINE_BLEND32(vividlight, (A < 0.5) ? BURN(2 * A, B) : DODGE(2 * (A - 0.5), B), 32)
DEFINE_BLEND32(linearlight,(B < 0.5) ? B + 2 * A - 1.0 : B + 2 * (A - 0.5), 32)
#define DEFINE_BLEND_EXPR(type, name, div) \
static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
@ -475,6 +573,7 @@ static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize,
DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
DEFINE_BLEND_EXPR(float, 32bit, 4)
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
@ -580,6 +679,7 @@ static int query_formats(AVFilterContext *ctx)
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, AV_PIX_FMT_GRAYF32,
AV_PIX_FMT_NONE
};
@ -645,6 +745,7 @@ DEFINE_INIT_BLEND_FUNC(9, 16)
DEFINE_INIT_BLEND_FUNC(10, 16)
DEFINE_INIT_BLEND_FUNC(12, 16)
DEFINE_INIT_BLEND_FUNC(16, 16)
DEFINE_INIT_BLEND_FUNC(32, 32)
void ff_blend_init(FilterParams *param, int depth)
{
@ -664,15 +765,18 @@ void ff_blend_init(FilterParams *param, int depth)
case 16:
init_blend_func_16_16bit(param);
break;
case 32:
init_blend_func_32_32bit(param);
break;
}
if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
param->blend = depth > 8 ? blend_copytop_16 : blend_copytop_8;
param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
} else if (param->mode == BLEND_NORMAL) {
if (param->opacity == 1)
param->blend = depth > 8 ? blend_copytop_16 : blend_copytop_8;
param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
else if (param->opacity == 0)
param->blend = depth > 8 ? blend_copybottom_16 : blend_copybottom_8;
param->blend = depth > 8 ? depth > 16 ? blend_copybottom_32 : blend_copybottom_16 : blend_copybottom_8;
}
if (ARCH_X86)
@ -740,7 +844,7 @@ static int config_output(AVFilterLink *outlink)
NULL, NULL, NULL, NULL, 0, ctx);
if (ret < 0)
return ret;
param->blend = s->depth > 8 ? blend_expr_16bit : blend_expr_8bit;
param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
}
}