mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
472 lines
13 KiB
C
472 lines
13 KiB
C
/*
|
|
* Copyright (c) 2017 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/imgutils.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "libavutil/qsort.h"
|
|
#include "avfilter.h"
|
|
|
|
#define FF_BUFQUEUE_SIZE 129
|
|
#include "bufferqueue.h"
|
|
|
|
#include "formats.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
#define SIZE FF_BUFQUEUE_SIZE
|
|
|
|
enum smooth_mode {
|
|
ARITHMETIC_MEAN,
|
|
GEOMETRIC_MEAN,
|
|
HARMONIC_MEAN,
|
|
QUADRATIC_MEAN,
|
|
CUBIC_MEAN,
|
|
POWER_MEAN,
|
|
MEDIAN,
|
|
NB_SMOOTH_MODE,
|
|
};
|
|
|
|
typedef struct DeflickerContext {
|
|
const AVClass *class;
|
|
|
|
int size;
|
|
int mode;
|
|
int bypass;
|
|
|
|
int eof;
|
|
int depth;
|
|
int nb_planes;
|
|
int planewidth[4];
|
|
int planeheight[4];
|
|
|
|
uint64_t *histogram;
|
|
float luminance[SIZE];
|
|
float sorted[SIZE];
|
|
|
|
struct FFBufQueue q;
|
|
int available;
|
|
|
|
void (*get_factor)(AVFilterContext *ctx, float *f);
|
|
float (*calc_avgy)(AVFilterContext *ctx, AVFrame *in);
|
|
int (*deflicker)(AVFilterContext *ctx, const uint8_t *src, ptrdiff_t src_linesize,
|
|
uint8_t *dst, ptrdiff_t dst_linesize, int w, int h, float f);
|
|
} DeflickerContext;
|
|
|
|
#define OFFSET(x) offsetof(DeflickerContext, x)
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
|
|
|
|
static const AVOption deflicker_options[] = {
|
|
{ "size", "set how many frames to use", OFFSET(size), AV_OPT_TYPE_INT, {.i64=5}, 2, SIZE, FLAGS },
|
|
{ "s", "set how many frames to use", OFFSET(size), AV_OPT_TYPE_INT, {.i64=5}, 2, SIZE, FLAGS },
|
|
{ "mode", "set how to smooth luminance", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_SMOOTH_MODE-1, FLAGS, "mode" },
|
|
{ "m", "set how to smooth luminance", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_SMOOTH_MODE-1, FLAGS, "mode" },
|
|
{ "am", "arithmetic mean", 0, AV_OPT_TYPE_CONST, {.i64=ARITHMETIC_MEAN}, 0, 0, FLAGS, "mode" },
|
|
{ "gm", "geometric mean", 0, AV_OPT_TYPE_CONST, {.i64=GEOMETRIC_MEAN}, 0, 0, FLAGS, "mode" },
|
|
{ "hm", "harmonic mean", 0, AV_OPT_TYPE_CONST, {.i64=HARMONIC_MEAN}, 0, 0, FLAGS, "mode" },
|
|
{ "qm", "quadratic mean", 0, AV_OPT_TYPE_CONST, {.i64=QUADRATIC_MEAN}, 0, 0, FLAGS, "mode" },
|
|
{ "cm", "cubic mean", 0, AV_OPT_TYPE_CONST, {.i64=CUBIC_MEAN}, 0, 0, FLAGS, "mode" },
|
|
{ "pm", "power mean", 0, AV_OPT_TYPE_CONST, {.i64=POWER_MEAN}, 0, 0, FLAGS, "mode" },
|
|
{ "median", "median", 0, AV_OPT_TYPE_CONST, {.i64=MEDIAN}, 0, 0, FLAGS, "mode" },
|
|
{ "bypass", "leave frames unchanged", OFFSET(bypass), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(deflicker);
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
static const enum AVPixelFormat pixel_fmts[] = {
|
|
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10,
|
|
AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
|
|
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
|
|
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
|
|
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
|
|
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
|
|
AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
|
|
AV_PIX_FMT_YUVJ411P,
|
|
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
|
|
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
|
|
AV_PIX_FMT_YUV440P10,
|
|
AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
|
|
AV_PIX_FMT_YUV440P12,
|
|
AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
|
|
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
|
|
AV_PIX_FMT_NONE
|
|
};
|
|
AVFilterFormats *formats = ff_make_format_list(pixel_fmts);
|
|
if (!formats)
|
|
return AVERROR(ENOMEM);
|
|
return ff_set_common_formats(ctx, formats);
|
|
}
|
|
|
|
static int deflicker8(AVFilterContext *ctx,
|
|
const uint8_t *src, ptrdiff_t src_linesize,
|
|
uint8_t *dst, ptrdiff_t dst_linesize,
|
|
int w, int h, float f)
|
|
{
|
|
int x, y;
|
|
|
|
for (y = 0; y < h; y++) {
|
|
for (x = 0; x < w; x++) {
|
|
dst[x] = av_clip_uint8(src[x] * f);
|
|
}
|
|
|
|
dst += dst_linesize;
|
|
src += src_linesize;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int deflicker16(AVFilterContext *ctx,
|
|
const uint8_t *ssrc, ptrdiff_t src_linesize,
|
|
uint8_t *ddst, ptrdiff_t dst_linesize,
|
|
int w, int h, float f)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
const uint16_t *src = (const uint16_t *)ssrc;
|
|
uint16_t *dst = (uint16_t *)ddst;
|
|
const int max = (1 << s->depth) - 1;
|
|
int x, y;
|
|
|
|
for (y = 0; y < h; y++) {
|
|
for (x = 0; x < w; x++) {
|
|
dst[x] = av_clip(src[x] * f, 0, max);
|
|
}
|
|
|
|
dst += dst_linesize / 2;
|
|
src += src_linesize / 2;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static float calc_avgy8(AVFilterContext *ctx, AVFrame *in)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
const uint8_t *src = in->data[0];
|
|
int64_t sum = 0;
|
|
int y, x;
|
|
|
|
memset(s->histogram, 0, (1 << s->depth) * sizeof(*s->histogram));
|
|
|
|
for (y = 0; y < s->planeheight[0]; y++) {
|
|
for (x = 0; x < s->planewidth[0]; x++) {
|
|
s->histogram[src[x]]++;
|
|
}
|
|
src += in->linesize[0];
|
|
}
|
|
|
|
for (y = 0; y < 1 << s->depth; y++) {
|
|
sum += s->histogram[y] * y;
|
|
}
|
|
|
|
return 1.0f * sum / (s->planeheight[0] * s->planewidth[0]);
|
|
}
|
|
|
|
static float calc_avgy16(AVFilterContext *ctx, AVFrame *in)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
const uint16_t *src = (const uint16_t *)in->data[0];
|
|
int64_t sum = 0;
|
|
int y, x;
|
|
|
|
memset(s->histogram, 0, (1 << s->depth) * sizeof(*s->histogram));
|
|
|
|
for (y = 0; y < s->planeheight[0]; y++) {
|
|
for (x = 0; x < s->planewidth[0]; x++) {
|
|
s->histogram[src[x]]++;
|
|
}
|
|
src += in->linesize[0] / 2;
|
|
}
|
|
|
|
for (y = 0; y < 1 << s->depth; y++) {
|
|
sum += s->histogram[y] * y;
|
|
}
|
|
|
|
return 1.0f * sum / (s->planeheight[0] * s->planewidth[0]);
|
|
}
|
|
|
|
static void get_am_factor(AVFilterContext *ctx, float *f)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
int y;
|
|
|
|
*f = 0.0f;
|
|
|
|
for (y = 0; y < s->size; y++) {
|
|
*f += s->luminance[y];
|
|
}
|
|
|
|
*f /= s->size;
|
|
*f /= s->luminance[0];
|
|
}
|
|
|
|
static void get_gm_factor(AVFilterContext *ctx, float *f)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
int y;
|
|
|
|
*f = 1;
|
|
|
|
for (y = 0; y < s->size; y++) {
|
|
*f *= s->luminance[y];
|
|
}
|
|
|
|
*f = pow(*f, 1.0f / s->size);
|
|
*f /= s->luminance[0];
|
|
}
|
|
|
|
static void get_hm_factor(AVFilterContext *ctx, float *f)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
int y;
|
|
|
|
*f = 0.0f;
|
|
|
|
for (y = 0; y < s->size; y++) {
|
|
*f += 1.0f / s->luminance[y];
|
|
}
|
|
|
|
*f = s->size / *f;
|
|
*f /= s->luminance[0];
|
|
}
|
|
|
|
static void get_qm_factor(AVFilterContext *ctx, float *f)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
int y;
|
|
|
|
*f = 0.0f;
|
|
|
|
for (y = 0; y < s->size; y++) {
|
|
*f += s->luminance[y] * s->luminance[y];
|
|
}
|
|
|
|
*f /= s->size;
|
|
*f = sqrtf(*f);
|
|
*f /= s->luminance[0];
|
|
}
|
|
|
|
static void get_cm_factor(AVFilterContext *ctx, float *f)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
int y;
|
|
|
|
*f = 0.0f;
|
|
|
|
for (y = 0; y < s->size; y++) {
|
|
*f += s->luminance[y] * s->luminance[y] * s->luminance[y];
|
|
}
|
|
|
|
*f /= s->size;
|
|
*f = cbrtf(*f);
|
|
*f /= s->luminance[0];
|
|
}
|
|
|
|
static void get_pm_factor(AVFilterContext *ctx, float *f)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
int y;
|
|
|
|
*f = 0.0f;
|
|
|
|
for (y = 0; y < s->size; y++) {
|
|
*f += powf(s->luminance[y], s->size);
|
|
}
|
|
|
|
*f /= s->size;
|
|
*f = powf(*f, 1.0f / s->size);
|
|
*f /= s->luminance[0];
|
|
}
|
|
|
|
static int comparef(const void *a, const void *b)
|
|
{
|
|
const float *aa = a, *bb = b;
|
|
return round(aa - bb);
|
|
}
|
|
|
|
static void get_median_factor(AVFilterContext *ctx, float *f)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
|
|
memcpy(s->sorted, s->luminance, sizeof(s->sorted));
|
|
AV_QSORT(s->sorted, s->size, float, comparef);
|
|
|
|
*f = s->sorted[s->size >> 1] / s->luminance[0];
|
|
}
|
|
|
|
static int config_input(AVFilterLink *inlink)
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
AVFilterContext *ctx = inlink->dst;
|
|
DeflickerContext *s = ctx->priv;
|
|
|
|
s->nb_planes = desc->nb_components;
|
|
|
|
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
|
|
s->planeheight[0] = s->planeheight[3] = inlink->h;
|
|
s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
|
|
s->planewidth[0] = s->planewidth[3] = inlink->w;
|
|
|
|
s->depth = desc->comp[0].depth;
|
|
if (s->depth == 8) {
|
|
s->deflicker = deflicker8;
|
|
s->calc_avgy = calc_avgy8;
|
|
} else {
|
|
s->deflicker = deflicker16;
|
|
s->calc_avgy = calc_avgy16;
|
|
}
|
|
|
|
s->histogram = av_calloc(1 << s->depth, sizeof(*s->histogram));
|
|
if (!s->histogram)
|
|
return AVERROR(ENOMEM);
|
|
|
|
switch (s->mode) {
|
|
case MEDIAN: s->get_factor = get_median_factor; break;
|
|
case ARITHMETIC_MEAN: s->get_factor = get_am_factor; break;
|
|
case GEOMETRIC_MEAN: s->get_factor = get_gm_factor; break;
|
|
case HARMONIC_MEAN: s->get_factor = get_hm_factor; break;
|
|
case QUADRATIC_MEAN: s->get_factor = get_qm_factor; break;
|
|
case CUBIC_MEAN: s->get_factor = get_cm_factor; break;
|
|
case POWER_MEAN: s->get_factor = get_pm_factor; break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
DeflickerContext *s = ctx->priv;
|
|
AVDictionary **metadata;
|
|
AVFrame *out, *in;
|
|
float f;
|
|
int y;
|
|
|
|
if (s->q.available < s->size && !s->eof) {
|
|
s->luminance[s->available] = s->calc_avgy(ctx, buf);
|
|
ff_bufqueue_add(ctx, &s->q, buf);
|
|
s->available++;
|
|
return 0;
|
|
}
|
|
|
|
in = ff_bufqueue_peek(&s->q, 0);
|
|
|
|
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
|
if (!out) {
|
|
av_frame_free(&buf);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
s->get_factor(ctx, &f);
|
|
if (!s->bypass)
|
|
s->deflicker(ctx, in->data[0], in->linesize[0], out->data[0], out->linesize[0],
|
|
outlink->w, outlink->h, f);
|
|
for (y = 1 - s->bypass; y < s->nb_planes; y++) {
|
|
av_image_copy_plane(out->data[y], out->linesize[y],
|
|
in->data[y], in->linesize[y],
|
|
s->planewidth[y] * (1 + (s->depth > 8)), s->planeheight[y]);
|
|
}
|
|
|
|
av_frame_copy_props(out, in);
|
|
metadata = &out->metadata;
|
|
if (metadata) {
|
|
uint8_t value[128];
|
|
|
|
snprintf(value, sizeof(value), "%f", s->luminance[0]);
|
|
av_dict_set(metadata, "lavfi.deflicker.luminance", value, 0);
|
|
|
|
snprintf(value, sizeof(value), "%f", s->luminance[0] * f);
|
|
av_dict_set(metadata, "lavfi.deflicker.new_luminance", value, 0);
|
|
|
|
snprintf(value, sizeof(value), "%f", f - 1.0f);
|
|
av_dict_set(metadata, "lavfi.deflicker.relative_change", value, 0);
|
|
}
|
|
|
|
in = ff_bufqueue_get(&s->q);
|
|
av_frame_free(&in);
|
|
memmove(&s->luminance[0], &s->luminance[1], sizeof(*s->luminance) * (s->size - 1));
|
|
s->luminance[s->available - 1] = s->calc_avgy(ctx, buf);
|
|
ff_bufqueue_add(ctx, &s->q, buf);
|
|
|
|
return ff_filter_frame(outlink, out);
|
|
}
|
|
|
|
static int request_frame(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
DeflickerContext *s = ctx->priv;
|
|
int ret;
|
|
|
|
ret = ff_request_frame(ctx->inputs[0]);
|
|
if (ret == AVERROR_EOF && s->available > 0) {
|
|
AVFrame *buf = av_frame_clone(ff_bufqueue_peek(&s->q, s->size - 1));
|
|
if (!buf)
|
|
return AVERROR(ENOMEM);
|
|
|
|
s->eof = 1;
|
|
ret = filter_frame(ctx->inputs[0], buf);
|
|
s->available--;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
DeflickerContext *s = ctx->priv;
|
|
|
|
ff_bufqueue_discard_all(&s->q);
|
|
av_freep(&s->histogram);
|
|
}
|
|
|
|
static const AVFilterPad inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame,
|
|
.config_props = config_input,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.request_frame = request_frame,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter ff_vf_deflicker = {
|
|
.name = "deflicker",
|
|
.description = NULL_IF_CONFIG_SMALL("Remove temporal frame luminance variations."),
|
|
.priv_size = sizeof(DeflickerContext),
|
|
.priv_class = &deflicker_class,
|
|
.uninit = uninit,
|
|
.query_formats = query_formats,
|
|
.inputs = inputs,
|
|
.outputs = outputs,
|
|
};
|