mirror of https://git.ffmpeg.org/ffmpeg.git
337 lines
11 KiB
C
337 lines
11 KiB
C
/*
|
|
* Copyright (c) 2012-2013 Oka Motofumi (chikuzen.mo at gmail dot com)
|
|
* Copyright (c) 2015 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/avstring.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "avfilter.h"
|
|
#include "formats.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
typedef struct ConvolutionContext {
|
|
const AVClass *class;
|
|
|
|
char *matrix_str[4];
|
|
float rdiv[4];
|
|
float bias[4];
|
|
|
|
int bstride;
|
|
uint8_t *buffer;
|
|
int nb_planes;
|
|
int planewidth[4];
|
|
int planeheight[4];
|
|
int matrix[4][25];
|
|
int matrix_length[4];
|
|
int copy[4];
|
|
|
|
void (*filter[4])(struct ConvolutionContext *s, AVFrame *in, AVFrame *out, int plane);
|
|
} ConvolutionContext;
|
|
|
|
#define OFFSET(x) offsetof(ConvolutionContext, x)
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
|
|
|
|
static const AVOption convolution_options[] = {
|
|
{ "0m", "set matrix for 1st plane", OFFSET(matrix_str[0]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
|
|
{ "1m", "set matrix for 2nd plane", OFFSET(matrix_str[1]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
|
|
{ "2m", "set matrix for 3rd plane", OFFSET(matrix_str[2]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
|
|
{ "3m", "set matrix for 4th plane", OFFSET(matrix_str[3]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
|
|
{ "0rdiv", "set rdiv for 1st plane", OFFSET(rdiv[0]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
|
|
{ "1rdiv", "set rdiv for 2nd plane", OFFSET(rdiv[1]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
|
|
{ "2rdiv", "set rdiv for 3rd plane", OFFSET(rdiv[2]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
|
|
{ "3rdiv", "set rdiv for 4th plane", OFFSET(rdiv[3]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
|
|
{ "0bias", "set bias for 1st plane", OFFSET(bias[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
|
|
{ "1bias", "set bias for 2nd plane", OFFSET(bias[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
|
|
{ "2bias", "set bias for 3rd plane", OFFSET(bias[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
|
|
{ "3bias", "set bias for 4th plane", OFFSET(bias[3]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(convolution);
|
|
|
|
static const int same3x3[9] = {0, 0, 0,
|
|
0, 1, 0,
|
|
0, 0, 0};
|
|
|
|
static const int same5x5[25] = {0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0,
|
|
0, 0, 1, 0, 0,
|
|
0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0};
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
static const enum AVPixelFormat pix_fmts[] = {
|
|
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
|
|
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
|
|
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
|
|
AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
|
|
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
|
|
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
|
|
AV_PIX_FMT_GRAY8,
|
|
AV_PIX_FMT_NONE
|
|
};
|
|
|
|
return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
|
|
}
|
|
|
|
static int config_input(AVFilterLink *inlink)
|
|
{
|
|
ConvolutionContext *s = inlink->dst->priv;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
int ret;
|
|
|
|
if ((ret = av_image_fill_linesizes(s->planewidth, inlink->format, inlink->w)) < 0)
|
|
return ret;
|
|
|
|
s->planeheight[1] = s->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
|
|
s->planeheight[0] = s->planeheight[3] = inlink->h;
|
|
|
|
s->nb_planes = av_pix_fmt_count_planes(inlink->format);
|
|
|
|
s->bstride = s->planewidth[0] + 32;
|
|
s->buffer = av_malloc(5 * s->bstride);
|
|
if (!s->buffer)
|
|
return AVERROR(ENOMEM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void line_copy8(uint8_t *line, const uint8_t *srcp, int width, int mergin)
|
|
{
|
|
int i;
|
|
|
|
memcpy(line, srcp, width);
|
|
|
|
for (i = mergin; i > 0; i--) {
|
|
line[-i] = line[i];
|
|
line[width - 1 + i] = line[width - 1 - i];
|
|
}
|
|
}
|
|
|
|
static void filter_3x3(ConvolutionContext *s, AVFrame *in, AVFrame *out, int plane)
|
|
{
|
|
const uint8_t *src = in->data[plane];
|
|
uint8_t *dst = out->data[plane];
|
|
const int stride = in->linesize[plane];
|
|
const int bstride = s->bstride;
|
|
const int height = s->planeheight[plane];
|
|
const int width = s->planewidth[plane];
|
|
uint8_t *p0 = s->buffer + 16;
|
|
uint8_t *p1 = p0 + bstride;
|
|
uint8_t *p2 = p1 + bstride;
|
|
uint8_t *orig = p0, *end = p2;
|
|
const int *matrix = s->matrix[plane];
|
|
const float rdiv = s->rdiv[plane];
|
|
const float bias = s->bias[plane];
|
|
int y, x;
|
|
|
|
line_copy8(p0, src + stride, width, 1);
|
|
line_copy8(p1, src, width, 1);
|
|
|
|
for (y = 0; y < height; y++) {
|
|
src += stride * (y < height - 1 ? 1 : -1);
|
|
line_copy8(p2, src, width, 1);
|
|
|
|
for (x = 0; x < width; x++) {
|
|
int sum = p0[x - 1] * matrix[0] +
|
|
p0[x] * matrix[1] +
|
|
p0[x + 1] * matrix[2] +
|
|
p1[x - 1] * matrix[3] +
|
|
p1[x] * matrix[4] +
|
|
p1[x + 1] * matrix[5] +
|
|
p2[x - 1] * matrix[6] +
|
|
p2[x] * matrix[7] +
|
|
p2[x + 1] * matrix[8];
|
|
sum = (int)(sum * rdiv + bias + 0.5f);
|
|
dst[x] = av_clip_uint8(sum);
|
|
}
|
|
|
|
p0 = p1;
|
|
p1 = p2;
|
|
p2 = (p2 == end) ? orig: p2 + bstride;
|
|
dst += out->linesize[plane];
|
|
}
|
|
}
|
|
|
|
static void filter_5x5(ConvolutionContext *s, AVFrame *in, AVFrame *out, int plane)
|
|
{
|
|
const uint8_t *src = in->data[plane];
|
|
uint8_t *dst = out->data[plane];
|
|
const int stride = in->linesize[plane];
|
|
const int bstride = s->bstride;
|
|
const int height = s->planeheight[plane];
|
|
const int width = s->planewidth[plane];
|
|
uint8_t *p0 = s->buffer + 16;
|
|
uint8_t *p1 = p0 + bstride;
|
|
uint8_t *p2 = p1 + bstride;
|
|
uint8_t *p3 = p2 + bstride;
|
|
uint8_t *p4 = p3 + bstride;
|
|
uint8_t *orig = p0, *end = p4;
|
|
const int *matrix = s->matrix[plane];
|
|
float rdiv = s->rdiv[plane];
|
|
float bias = s->bias[plane];
|
|
int y, x, i;
|
|
|
|
line_copy8(p0, src + 2 * stride, width, 2);
|
|
line_copy8(p1, src + stride, width, 2);
|
|
line_copy8(p2, src, width, 2);
|
|
src += stride;
|
|
line_copy8(p3, src, width, 2);
|
|
|
|
|
|
for (y = 0; y < height; y++) {
|
|
uint8_t *array[] = {
|
|
p0 - 2, p0 - 1, p0, p0 + 1, p0 + 2,
|
|
p1 - 2, p1 - 1, p1, p1 + 1, p1 + 2,
|
|
p2 - 2, p2 - 1, p2, p2 + 1, p2 + 2,
|
|
p3 - 2, p3 - 1, p3, p3 + 1, p3 + 2,
|
|
p4 - 2, p4 - 1, p4, p4 + 1, p4 + 2
|
|
};
|
|
|
|
src += stride * (y < height - 2 ? 1 : -1);
|
|
line_copy8(p4, src, width, 2);
|
|
|
|
for (x = 0; x < width; x++) {
|
|
int sum = 0;
|
|
|
|
for (i = 0; i < 25; i++) {
|
|
sum += *(array[i] + x) * matrix[i];
|
|
}
|
|
sum = (int)(sum * rdiv + bias + 0.5f);
|
|
dst[x] = av_clip_uint8(sum);
|
|
}
|
|
|
|
p0 = p1;
|
|
p1 = p2;
|
|
p2 = p3;
|
|
p3 = p4;
|
|
p4 = (p4 == end) ? orig: p4 + bstride;
|
|
dst += out->linesize[plane];
|
|
}
|
|
}
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
|
{
|
|
ConvolutionContext *s = inlink->dst->priv;
|
|
AVFilterLink *outlink = inlink->dst->outputs[0];
|
|
AVFrame *out;
|
|
int plane;
|
|
|
|
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);
|
|
|
|
for (plane = 0; plane < s->nb_planes; plane++) {
|
|
if (s->copy[plane]) {
|
|
av_image_copy_plane(out->data[plane], out->linesize[plane],
|
|
in->data[plane], in->linesize[plane],
|
|
s->planewidth[plane],
|
|
s->planeheight[plane]);
|
|
continue;
|
|
}
|
|
|
|
s->filter[plane](s, in, out, plane);
|
|
}
|
|
|
|
av_frame_free(&in);
|
|
return ff_filter_frame(outlink, out);
|
|
}
|
|
|
|
static av_cold int init(AVFilterContext *ctx)
|
|
{
|
|
ConvolutionContext *s = ctx->priv;
|
|
int i;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
int *matrix = (int *)s->matrix[i];
|
|
char *p, *arg, *saveptr = NULL;
|
|
|
|
p = s->matrix_str[i];
|
|
while (s->matrix_length[i] < 25) {
|
|
if (!(arg = av_strtok(p, " ", &saveptr)))
|
|
break;
|
|
|
|
p = NULL;
|
|
sscanf(arg, "%d", &matrix[s->matrix_length[i]]);
|
|
s->matrix_length[i]++;
|
|
}
|
|
|
|
if (s->matrix_length[i] == 9) {
|
|
if (!memcmp(matrix, same3x3, sizeof(same3x3)))
|
|
s->copy[i] = 1;
|
|
else
|
|
s->filter[i] = filter_3x3;
|
|
} else if (s->matrix_length[i] == 25) {
|
|
if (!memcmp(matrix, same5x5, sizeof(same5x5)))
|
|
s->copy[i] = 1;
|
|
else
|
|
s->filter[i] = filter_5x5;
|
|
} else {
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
ConvolutionContext *s = ctx->priv;
|
|
|
|
av_freep(&s->buffer);
|
|
}
|
|
|
|
static const AVFilterPad convolution_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_input,
|
|
.filter_frame = filter_frame,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad convolution_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter ff_vf_convolution = {
|
|
.name = "convolution",
|
|
.description = NULL_IF_CONFIG_SMALL("Apply convolution filter."),
|
|
.priv_size = sizeof(ConvolutionContext),
|
|
.priv_class = &convolution_class,
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.query_formats = query_formats,
|
|
.inputs = convolution_inputs,
|
|
.outputs = convolution_outputs,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
|
|
};
|