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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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402 lines
11 KiB
C
402 lines
11 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2003> David Schleef <ds@schleef.org>
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* Copyright (C) <2009> Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* EffecTV - Realtime Digital Video Effector
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* Copyright (C) 2001-2002 FUKUCHI Kentarou
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*
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* AgingTV - film-aging effect.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-agingtv
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* @title: agingtv
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*
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* AgingTV ages a video stream in realtime, changes the colors and adds
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* scratches and dust.
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*
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* ## Example launch line
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* |[
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* gst-launch-1.0 -v videotestsrc ! agingtv ! videoconvert ! autovideosink
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* ]| This pipeline shows the effect of agingtv on a test stream.
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <math.h>
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#include "gstaging.h"
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#include "gsteffectv.h"
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static const gint dx[8] = { 1, 1, 0, -1, -1, -1, 0, 1 };
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static const gint dy[8] = { 0, -1, -1, -1, 0, 1, 1, 1 };
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enum
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{
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PROP_0 = 0,
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PROP_SCRATCH_LINES,
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PROP_COLOR_AGING,
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PROP_PITS,
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PROP_DUSTS
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};
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#define DEFAULT_SCRATCH_LINES 7
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#define DEFAULT_COLOR_AGING TRUE
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#define DEFAULT_PITS TRUE
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#define DEFAULT_DUSTS TRUE
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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#define CAPS_STR GST_VIDEO_CAPS_MAKE ("{ BGRx, RGBx }")
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#else
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#define CAPS_STR GST_VIDEO_CAPS_MAKE ("{ xRGB, xBGR }")
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#endif
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static GstStaticPadTemplate gst_agingtv_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (CAPS_STR)
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);
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static GstStaticPadTemplate gst_agingtv_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (CAPS_STR)
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);
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G_DEFINE_TYPE (GstAgingTV, gst_agingtv, GST_TYPE_VIDEO_FILTER);
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static void
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coloraging (guint32 * src, guint32 * dest, gint video_area, gint * c)
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{
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guint32 a, b;
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gint i;
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gint c_tmp = *c;
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c_tmp -= (gint) (fastrand ()) >> 28;
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if (c_tmp < 0)
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c_tmp = 0;
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if (c_tmp > 0x18)
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c_tmp = 0x18;
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for (i = 0; i < video_area; i++) {
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a = *src++;
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b = (a & 0xfcfcfc) >> 2;
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*dest++ =
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a - b + (c_tmp | (c_tmp << 8) | (c_tmp << 16)) +
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((fastrand () >> 8) & 0x101010);
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}
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*c = c_tmp;
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}
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static void
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scratching (scratch * scratches, gint scratch_lines, guint32 * dest, gint width,
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gint height)
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{
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gint i, y, y1, y2;
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guint32 *p, a, b;
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scratch *scratch;
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for (i = 0; i < scratch_lines; i++) {
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scratch = &scratches[i];
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if (scratch->life) {
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scratch->x = scratch->x + scratch->dx;
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if (scratch->x < 0 || scratch->x > width * 256) {
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scratch->life = 0;
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break;
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}
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p = dest + (scratch->x >> 8);
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if (scratch->init) {
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y1 = scratch->init;
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scratch->init = 0;
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} else {
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y1 = 0;
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}
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scratch->life--;
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if (scratch->life) {
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y2 = height;
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} else {
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y2 = fastrand () % height;
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}
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for (y = y1; y < y2; y++) {
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a = *p & 0xfefeff;
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a += 0x202020;
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b = a & 0x1010100;
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*p = a | (b - (b >> 8));
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p += width;
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}
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} else {
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if ((fastrand () & 0xf0000000) == 0) {
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scratch->life = 2 + (fastrand () >> 27);
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scratch->x = fastrand () % (width * 256);
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scratch->dx = ((int) fastrand ()) >> 23;
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scratch->init = (fastrand () % (height - 1)) + 1;
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}
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}
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}
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}
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static void
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dusts (guint32 * dest, gint width, gint height, gint * dust_interval,
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gint area_scale)
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{
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gint i, j;
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gint dnum;
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gint d, len;
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guint x, y;
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if (*dust_interval == 0) {
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if ((fastrand () & 0xf0000000) == 0) {
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*dust_interval = fastrand () >> 29;
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}
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return;
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}
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dnum = area_scale * 4 + (fastrand () >> 27);
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for (i = 0; i < dnum; i++) {
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x = fastrand () % width;
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y = fastrand () % height;
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d = fastrand () >> 29;
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len = fastrand () % area_scale + 5;
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for (j = 0; j < len; j++) {
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dest[y * width + x] = 0x101010;
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y += dy[d];
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x += dx[d];
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if (y >= height || x >= width)
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break;
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d = (d + fastrand () % 3 - 1) & 7;
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}
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}
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*dust_interval = *dust_interval - 1;
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}
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static void
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pits (guint32 * dest, gint width, gint height, gint area_scale,
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gint * pits_interval)
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{
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gint i, j;
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gint pnum, size, pnumscale;
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guint x, y;
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pnumscale = area_scale * 2;
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if (*pits_interval) {
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pnum = pnumscale + (fastrand () % pnumscale);
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*pits_interval = *pits_interval - 1;
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} else {
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pnum = fastrand () % pnumscale;
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if ((fastrand () & 0xf8000000) == 0) {
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*pits_interval = (fastrand () >> 28) + 20;
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}
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}
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for (i = 0; i < pnum; i++) {
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x = fastrand () % (width - 1);
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y = fastrand () % (height - 1);
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size = fastrand () >> 28;
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for (j = 0; j < size; j++) {
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x = x + fastrand () % 3 - 1;
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y = y + fastrand () % 3 - 1;
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if (y >= height || x >= width)
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break;
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dest[y * width + x] = 0xc0c0c0;
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}
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}
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}
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static void
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gst_agingtv_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstAgingTV *agingtv = GST_AGINGTV (object);
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GST_OBJECT_LOCK (agingtv);
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switch (prop_id) {
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case PROP_SCRATCH_LINES:
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g_value_set_uint (value, agingtv->scratch_lines);
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break;
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case PROP_COLOR_AGING:
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g_value_set_boolean (value, agingtv->color_aging);
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break;
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case PROP_PITS:
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g_value_set_boolean (value, agingtv->pits);
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break;
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case PROP_DUSTS:
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g_value_set_boolean (value, agingtv->dusts);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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GST_OBJECT_UNLOCK (agingtv);
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}
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static void
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gst_agingtv_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstAgingTV *agingtv = GST_AGINGTV (object);
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switch (prop_id) {
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case PROP_SCRATCH_LINES:
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agingtv->scratch_lines = g_value_get_uint (value);
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break;
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case PROP_COLOR_AGING:
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agingtv->color_aging = g_value_get_boolean (value);
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break;
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case PROP_PITS:
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agingtv->pits = g_value_get_boolean (value);
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break;
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case PROP_DUSTS:
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agingtv->dusts = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static gboolean
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gst_agingtv_start (GstBaseTransform * trans)
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{
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GstAgingTV *agingtv = GST_AGINGTV (trans);
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agingtv->coloraging_state = 0x18;
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agingtv->dust_interval = 0;
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agingtv->pits_interval = 0;
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memset (agingtv->scratches, 0, sizeof (agingtv->scratches));
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return TRUE;
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}
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static GstFlowReturn
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gst_agingtv_transform_frame (GstVideoFilter * filter, GstVideoFrame * in_frame,
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GstVideoFrame * out_frame)
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{
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GstAgingTV *agingtv = GST_AGINGTV (filter);
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gint area_scale;
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GstClockTime timestamp, stream_time;
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gint width, height, stride, video_size;
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guint32 *src, *dest;
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timestamp = GST_BUFFER_TIMESTAMP (in_frame->buffer);
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stream_time =
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gst_segment_to_stream_time (&GST_BASE_TRANSFORM (filter)->segment,
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GST_FORMAT_TIME, timestamp);
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GST_DEBUG_OBJECT (agingtv, "sync to %" GST_TIME_FORMAT,
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GST_TIME_ARGS (timestamp));
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if (GST_CLOCK_TIME_IS_VALID (stream_time))
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gst_object_sync_values (GST_OBJECT (agingtv), stream_time);
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width = GST_VIDEO_FRAME_WIDTH (in_frame);
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height = GST_VIDEO_FRAME_HEIGHT (in_frame);
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stride = GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0);
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video_size = stride * height / 4;
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src = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
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dest = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
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area_scale = width * height / 64 / 480;
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if (area_scale <= 0)
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area_scale = 1;
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if (agingtv->color_aging)
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coloraging (src, dest, video_size, &agingtv->coloraging_state);
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else
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memcpy (dest, src, stride * height);
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scratching (agingtv->scratches, agingtv->scratch_lines, dest, width, height);
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if (agingtv->pits)
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pits (dest, width, height, area_scale, &agingtv->pits_interval);
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if (area_scale > 1 && agingtv->dusts)
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dusts (dest, width, height, &agingtv->dust_interval, area_scale);
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return GST_FLOW_OK;
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}
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static void
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gst_agingtv_class_init (GstAgingTVClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
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GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
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gobject_class->set_property = gst_agingtv_set_property;
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gobject_class->get_property = gst_agingtv_get_property;
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g_object_class_install_property (gobject_class, PROP_SCRATCH_LINES,
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g_param_spec_uint ("scratch-lines", "Scratch Lines",
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"Number of scratch lines", 0, SCRATCH_MAX, DEFAULT_SCRATCH_LINES,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
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g_object_class_install_property (gobject_class, PROP_COLOR_AGING,
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g_param_spec_boolean ("color-aging", "Color Aging",
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"Color Aging", DEFAULT_COLOR_AGING,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
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g_object_class_install_property (gobject_class, PROP_PITS,
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g_param_spec_boolean ("pits", "Pits",
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"Pits", DEFAULT_PITS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
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g_object_class_install_property (gobject_class, PROP_DUSTS,
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g_param_spec_boolean ("dusts", "Dusts",
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"Dusts", DEFAULT_DUSTS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
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gst_element_class_set_static_metadata (gstelement_class, "AgingTV effect",
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"Filter/Effect/Video",
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"AgingTV adds age to video input using scratches and dust",
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"Sam Lantinga <slouken@devolution.com>");
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_agingtv_sink_template);
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_agingtv_src_template);
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trans_class->start = GST_DEBUG_FUNCPTR (gst_agingtv_start);
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vfilter_class->transform_frame =
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GST_DEBUG_FUNCPTR (gst_agingtv_transform_frame);
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}
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static void
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gst_agingtv_init (GstAgingTV * agingtv)
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{
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agingtv->scratch_lines = DEFAULT_SCRATCH_LINES;
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agingtv->color_aging = DEFAULT_COLOR_AGING;
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agingtv->pits = DEFAULT_PITS;
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agingtv->dusts = DEFAULT_DUSTS;
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}
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