321 lines
12 KiB
C
321 lines
12 KiB
C
/*
|
|
* Copyright (c) 2012 Jeremy Tran
|
|
* Copyright (c) 2004 Tobias Diedrich
|
|
* Copyright (c) 2003 Donald A. Graft
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU 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.
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Kernel Deinterlacer
|
|
* Ported from MPlayer libmpcodecs/vf_kerndeint.c.
|
|
*/
|
|
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixdesc.h"
|
|
|
|
#include "avfilter.h"
|
|
#include "formats.h"
|
|
#include "internal.h"
|
|
|
|
typedef struct {
|
|
const AVClass *class;
|
|
int frame; ///< frame count, starting from 0
|
|
int thresh, map, order, sharp, twoway;
|
|
int vsub;
|
|
int is_packed_rgb;
|
|
uint8_t *tmp_data [4]; ///< temporary plane data buffer
|
|
int tmp_linesize[4]; ///< temporary plane byte linesize
|
|
int tmp_bwidth [4]; ///< temporary plane byte width
|
|
} KerndeintContext;
|
|
|
|
#define OFFSET(x) offsetof(KerndeintContext, x)
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
|
|
static const AVOption kerndeint_options[] = {
|
|
{ "thresh", "set the threshold", OFFSET(thresh), AV_OPT_TYPE_INT, {.i64=10}, 0, 255, FLAGS },
|
|
{ "map", "set the map", OFFSET(map), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS },
|
|
{ "order", "set the order", OFFSET(order), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS },
|
|
{ "sharp", "enable sharpening", OFFSET(sharp), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS },
|
|
{ "twoway", "enable twoway", OFFSET(twoway), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS },
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(kerndeint);
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
KerndeintContext *kerndeint = ctx->priv;
|
|
|
|
av_free(kerndeint->tmp_data[0]);
|
|
}
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
static const enum PixelFormat pix_fmts[] = {
|
|
AV_PIX_FMT_YUV420P,
|
|
AV_PIX_FMT_YUYV422,
|
|
AV_PIX_FMT_ARGB, AV_PIX_FMT_0RGB,
|
|
AV_PIX_FMT_ABGR, AV_PIX_FMT_0BGR,
|
|
AV_PIX_FMT_RGBA, AV_PIX_FMT_RGB0,
|
|
AV_PIX_FMT_BGRA, AV_PIX_FMT_BGR0,
|
|
AV_PIX_FMT_NONE
|
|
};
|
|
|
|
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int config_props(AVFilterLink *inlink)
|
|
{
|
|
KerndeintContext *kerndeint = inlink->dst->priv;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
int ret;
|
|
|
|
kerndeint->is_packed_rgb = av_pix_fmt_desc_get(inlink->format)->flags & AV_PIX_FMT_FLAG_RGB;
|
|
kerndeint->vsub = desc->log2_chroma_h;
|
|
|
|
ret = av_image_alloc(kerndeint->tmp_data, kerndeint->tmp_linesize,
|
|
inlink->w, inlink->h, inlink->format, 16);
|
|
if (ret < 0)
|
|
return ret;
|
|
memset(kerndeint->tmp_data[0], 0, ret);
|
|
|
|
if ((ret = av_image_fill_linesizes(kerndeint->tmp_bwidth, inlink->format, inlink->w)) < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
|
|
{
|
|
KerndeintContext *kerndeint = inlink->dst->priv;
|
|
AVFilterLink *outlink = inlink->dst->outputs[0];
|
|
AVFrame *outpic;
|
|
const uint8_t *prvp; ///< Previous field's pixel line number n
|
|
const uint8_t *prvpp; ///< Previous field's pixel line number (n - 1)
|
|
const uint8_t *prvpn; ///< Previous field's pixel line number (n + 1)
|
|
const uint8_t *prvppp; ///< Previous field's pixel line number (n - 2)
|
|
const uint8_t *prvpnn; ///< Previous field's pixel line number (n + 2)
|
|
const uint8_t *prvp4p; ///< Previous field's pixel line number (n - 4)
|
|
const uint8_t *prvp4n; ///< Previous field's pixel line number (n + 4)
|
|
|
|
const uint8_t *srcp; ///< Current field's pixel line number n
|
|
const uint8_t *srcpp; ///< Current field's pixel line number (n - 1)
|
|
const uint8_t *srcpn; ///< Current field's pixel line number (n + 1)
|
|
const uint8_t *srcppp; ///< Current field's pixel line number (n - 2)
|
|
const uint8_t *srcpnn; ///< Current field's pixel line number (n + 2)
|
|
const uint8_t *srcp3p; ///< Current field's pixel line number (n - 3)
|
|
const uint8_t *srcp3n; ///< Current field's pixel line number (n + 3)
|
|
const uint8_t *srcp4p; ///< Current field's pixel line number (n - 4)
|
|
const uint8_t *srcp4n; ///< Current field's pixel line number (n + 4)
|
|
|
|
uint8_t *dstp, *dstp_saved;
|
|
const uint8_t *srcp_saved;
|
|
|
|
int src_linesize, psrc_linesize, dst_linesize, bwidth;
|
|
int x, y, plane, val, hi, lo, g, h, n = kerndeint->frame++;
|
|
double valf;
|
|
|
|
const int thresh = kerndeint->thresh;
|
|
const int order = kerndeint->order;
|
|
const int map = kerndeint->map;
|
|
const int sharp = kerndeint->sharp;
|
|
const int twoway = kerndeint->twoway;
|
|
|
|
const int is_packed_rgb = kerndeint->is_packed_rgb;
|
|
|
|
outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
|
if (!outpic) {
|
|
av_frame_free(&inpic);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
av_frame_copy_props(outpic, inpic);
|
|
outpic->interlaced_frame = 0;
|
|
|
|
for (plane = 0; inpic->data[plane] && plane < 4; plane++) {
|
|
h = plane == 0 ? inlink->h : FF_CEIL_RSHIFT(inlink->h, kerndeint->vsub);
|
|
bwidth = kerndeint->tmp_bwidth[plane];
|
|
|
|
srcp = srcp_saved = inpic->data[plane];
|
|
src_linesize = inpic->linesize[plane];
|
|
psrc_linesize = kerndeint->tmp_linesize[plane];
|
|
dstp = dstp_saved = outpic->data[plane];
|
|
dst_linesize = outpic->linesize[plane];
|
|
srcp = srcp_saved + (1 - order) * src_linesize;
|
|
dstp = dstp_saved + (1 - order) * dst_linesize;
|
|
|
|
for (y = 0; y < h; y += 2) {
|
|
memcpy(dstp, srcp, bwidth);
|
|
srcp += 2 * src_linesize;
|
|
dstp += 2 * dst_linesize;
|
|
}
|
|
|
|
// Copy through the lines that will be missed below.
|
|
memcpy(dstp_saved + order * dst_linesize, srcp_saved + (1 - order) * src_linesize, bwidth);
|
|
memcpy(dstp_saved + (2 + order ) * dst_linesize, srcp_saved + (3 - order) * src_linesize, bwidth);
|
|
memcpy(dstp_saved + (h - 2 + order) * dst_linesize, srcp_saved + (h - 1 - order) * src_linesize, bwidth);
|
|
memcpy(dstp_saved + (h - 4 + order) * dst_linesize, srcp_saved + (h - 3 - order) * src_linesize, bwidth);
|
|
|
|
/* For the other field choose adaptively between using the previous field
|
|
or the interpolant from the current field. */
|
|
prvp = kerndeint->tmp_data[plane] + 5 * psrc_linesize - (1 - order) * psrc_linesize;
|
|
prvpp = prvp - psrc_linesize;
|
|
prvppp = prvp - 2 * psrc_linesize;
|
|
prvp4p = prvp - 4 * psrc_linesize;
|
|
prvpn = prvp + psrc_linesize;
|
|
prvpnn = prvp + 2 * psrc_linesize;
|
|
prvp4n = prvp + 4 * psrc_linesize;
|
|
|
|
srcp = srcp_saved + 5 * src_linesize - (1 - order) * src_linesize;
|
|
srcpp = srcp - src_linesize;
|
|
srcppp = srcp - 2 * src_linesize;
|
|
srcp3p = srcp - 3 * src_linesize;
|
|
srcp4p = srcp - 4 * src_linesize;
|
|
|
|
srcpn = srcp + src_linesize;
|
|
srcpnn = srcp + 2 * src_linesize;
|
|
srcp3n = srcp + 3 * src_linesize;
|
|
srcp4n = srcp + 4 * src_linesize;
|
|
|
|
dstp = dstp_saved + 5 * dst_linesize - (1 - order) * dst_linesize;
|
|
|
|
for (y = 5 - (1 - order); y <= h - 5 - (1 - order); y += 2) {
|
|
for (x = 0; x < bwidth; x++) {
|
|
if (thresh == 0 || n == 0 ||
|
|
(abs((int)prvp[x] - (int)srcp[x]) > thresh) ||
|
|
(abs((int)prvpp[x] - (int)srcpp[x]) > thresh) ||
|
|
(abs((int)prvpn[x] - (int)srcpn[x]) > thresh)) {
|
|
if (map) {
|
|
g = x & ~3;
|
|
|
|
if (is_packed_rgb) {
|
|
AV_WB32(dstp + g, 0xffffffff);
|
|
x = g + 3;
|
|
} else if (inlink->format == AV_PIX_FMT_YUYV422) {
|
|
// y <- 235, u <- 128, y <- 235, v <- 128
|
|
AV_WB32(dstp + g, 0xeb80eb80);
|
|
x = g + 3;
|
|
} else {
|
|
dstp[x] = plane == 0 ? 235 : 128;
|
|
}
|
|
} else {
|
|
if (is_packed_rgb) {
|
|
hi = 255;
|
|
lo = 0;
|
|
} else if (inlink->format == AV_PIX_FMT_YUYV422) {
|
|
hi = x & 1 ? 240 : 235;
|
|
lo = 16;
|
|
} else {
|
|
hi = plane == 0 ? 235 : 240;
|
|
lo = 16;
|
|
}
|
|
|
|
if (sharp) {
|
|
if (twoway) {
|
|
valf = + 0.526 * ((int)srcpp[x] + (int)srcpn[x])
|
|
+ 0.170 * ((int)srcp[x] + (int)prvp[x])
|
|
- 0.116 * ((int)srcppp[x] + (int)srcpnn[x] + (int)prvppp[x] + (int)prvpnn[x])
|
|
- 0.026 * ((int)srcp3p[x] + (int)srcp3n[x])
|
|
+ 0.031 * ((int)srcp4p[x] + (int)srcp4n[x] + (int)prvp4p[x] + (int)prvp4n[x]);
|
|
} else {
|
|
valf = + 0.526 * ((int)srcpp[x] + (int)srcpn[x])
|
|
+ 0.170 * ((int)prvp[x])
|
|
- 0.116 * ((int)prvppp[x] + (int)prvpnn[x])
|
|
- 0.026 * ((int)srcp3p[x] + (int)srcp3n[x])
|
|
+ 0.031 * ((int)prvp4p[x] + (int)prvp4p[x]);
|
|
}
|
|
dstp[x] = av_clip(valf, lo, hi);
|
|
} else {
|
|
if (twoway) {
|
|
val = (8 * ((int)srcpp[x] + (int)srcpn[x]) + 2 * ((int)srcp[x] + (int)prvp[x])
|
|
- (int)(srcppp[x]) - (int)(srcpnn[x])
|
|
- (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
|
|
} else {
|
|
val = (8 * ((int)srcpp[x] + (int)srcpn[x]) + 2 * ((int)prvp[x])
|
|
- (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
|
|
}
|
|
dstp[x] = av_clip(val, lo, hi);
|
|
}
|
|
}
|
|
} else {
|
|
dstp[x] = srcp[x];
|
|
}
|
|
}
|
|
prvp += 2 * psrc_linesize;
|
|
prvpp += 2 * psrc_linesize;
|
|
prvppp += 2 * psrc_linesize;
|
|
prvpn += 2 * psrc_linesize;
|
|
prvpnn += 2 * psrc_linesize;
|
|
prvp4p += 2 * psrc_linesize;
|
|
prvp4n += 2 * psrc_linesize;
|
|
srcp += 2 * src_linesize;
|
|
srcpp += 2 * src_linesize;
|
|
srcppp += 2 * src_linesize;
|
|
srcp3p += 2 * src_linesize;
|
|
srcp4p += 2 * src_linesize;
|
|
srcpn += 2 * src_linesize;
|
|
srcpnn += 2 * src_linesize;
|
|
srcp3n += 2 * src_linesize;
|
|
srcp4n += 2 * src_linesize;
|
|
dstp += 2 * dst_linesize;
|
|
}
|
|
|
|
srcp = inpic->data[plane];
|
|
dstp = kerndeint->tmp_data[plane];
|
|
av_image_copy_plane(dstp, psrc_linesize, srcp, src_linesize, bwidth, h);
|
|
}
|
|
|
|
av_frame_free(&inpic);
|
|
return ff_filter_frame(outlink, outpic);
|
|
}
|
|
|
|
static const AVFilterPad kerndeint_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame,
|
|
.config_props = config_props,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad kerndeint_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
|
|
AVFilter avfilter_vf_kerndeint = {
|
|
.name = "kerndeint",
|
|
.description = NULL_IF_CONFIG_SMALL("Apply kernel deinterlacing to the input."),
|
|
.priv_size = sizeof(KerndeintContext),
|
|
.uninit = uninit,
|
|
.query_formats = query_formats,
|
|
|
|
.inputs = kerndeint_inputs,
|
|
.outputs = kerndeint_outputs,
|
|
|
|
.priv_class = &kerndeint_class,
|
|
};
|