mirror of
https://github.com/mpv-player/mpv
synced 2024-12-19 05:15:12 +00:00
121 lines
3.9 KiB
C
121 lines
3.9 KiB
C
/*
|
|
* Copyright (c) 2012 Rudolf Polzer <divVerent@xonotic.org>
|
|
*
|
|
* This file is part of mpv's vf_dlopen examples.
|
|
*
|
|
* mpv's vf_dlopen examples are free software; you can redistribute them and/or
|
|
* modify them 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.
|
|
*
|
|
* mpv's vf_dlopen examples are distributed in the hope that they 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 mpv's vf_dlopen examples; if not, write to the Free
|
|
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301 USA
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "vf_dlopen.h"
|
|
|
|
/*
|
|
* qscale visualizer
|
|
*
|
|
* usage: --vf=dlopen=/path/to/showqscale.so
|
|
*
|
|
* uses reddish colors for high QPs, and greenish colors for low QPs
|
|
*/
|
|
|
|
#define PLANE_Y 0
|
|
#define PLANE_U 1
|
|
#define PLANE_V 2
|
|
|
|
static int qs_put_image(struct vf_dlopen_context *ctx)
|
|
{
|
|
unsigned int x, y, p;
|
|
|
|
assert(ctx->inpic.planes == ctx->outpic[0].planes);
|
|
|
|
for (p = 0; p < ctx->outpic[0].planes; ++p) {
|
|
assert(ctx->inpic.planewidth[p] == ctx->outpic[0].planewidth[p]);
|
|
assert(ctx->inpic.planeheight[p] == ctx->outpic[0].planeheight[p]);
|
|
if ((p == PLANE_U || p == PLANE_V) && ctx->inpic_qscale)
|
|
continue;
|
|
#if 0
|
|
// copy as is
|
|
for (y = 0; y < ctx->outpic[0].planeheight[p]; ++y)
|
|
memcpy(
|
|
&ctx->outpic[0].plane[p][ctx->outpic[0].planestride[p] * y],
|
|
&inpic[ctx->outpic[0].planeofs[p] + ctx->inpic.planestride[p] * y],
|
|
ctx->outpic[0].planewidth[p]
|
|
);
|
|
#else
|
|
// reduce contrast
|
|
for (y = 0; y < ctx->outpic[0].planeheight[p]; ++y)
|
|
for (x = 0; x < ctx->outpic[0].planewidth[p]; ++x)
|
|
ctx->outpic[0].plane[p][ctx->outpic[0].planestride[p] * y + x] =
|
|
0x20 + ((ctx->inpic.plane[p][ctx->inpic.planestride[p] * y + x] * 3) >> 2);
|
|
#endif
|
|
}
|
|
|
|
if (ctx->inpic_qscale) {
|
|
int qmin = 255;
|
|
int qmax = -255;
|
|
|
|
// clear U plane
|
|
p = PLANE_U;
|
|
for (y = 0; y < ctx->outpic[0].planeheight[p]; ++y)
|
|
memset(
|
|
&ctx->outpic[0].plane[p][ctx->outpic[0].planestride[p] * y],
|
|
0x80,
|
|
ctx->outpic[0].planewidth[p]
|
|
);
|
|
|
|
// replace V by the qp (0 = green, 12 = red)
|
|
p = PLANE_V;
|
|
for (y = 0; y < ctx->outpic[0].planeheight[p]; ++y)
|
|
for (x = 0; x < ctx->outpic[0].planewidth[p]; ++x) {
|
|
int q = ctx->inpic_qscale[
|
|
(x >> (ctx->inpic_qscaleshift - ctx->inpic.planexshift[p])) +
|
|
(y >> (ctx->inpic_qscaleshift - ctx->inpic.planeyshift[p])) * ctx->inpic_qscalestride];
|
|
if (q < qmin)
|
|
qmin = q;
|
|
if (q > qmax)
|
|
qmax = q;
|
|
int v = 128 + 21 * (q - 6); // range: 0 = green, 12 = red
|
|
if (v < 0)
|
|
v = 0;
|
|
if (v > 255)
|
|
v = 255;
|
|
ctx->outpic[0].plane[p][ctx->outpic[0].planestride[p] * y + x] = v;
|
|
}
|
|
|
|
// printf("qscale range: %d .. %d\n", qmin, qmax);
|
|
}
|
|
|
|
ctx->outpic[0].pts = ctx->inpic.pts;
|
|
return 1;
|
|
}
|
|
|
|
int vf_dlopen_getcontext(struct vf_dlopen_context *ctx, int argc, const char **argv)
|
|
{
|
|
VF_DLOPEN_CHECK_VERSION(ctx);
|
|
(void) argc;
|
|
(void) argv;
|
|
static struct vf_dlopen_formatpair map[] = {
|
|
{ "yuv420p", "yuv420p" },
|
|
{ NULL, NULL }
|
|
};
|
|
ctx->format_mapping = map;
|
|
ctx->put_image = qs_put_image;
|
|
return 1;
|
|
}
|