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299 lines
8.2 KiB
C
299 lines
8.2 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2009> Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* EffecTV:
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* Copyright (C) 2001-2002 FUKUCHI Kentarou
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*
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* QuarkTV - motion disolver.
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*
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* EffecTV is free software. This library is free software;
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* 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-quarktv
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*
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* QuarkTV disolves moving objects. It picks up pixels from
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* the last frames randomly.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch-1.0 -v videotestsrc ! quarktv ! videoconvert ! autovideosink
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* ]| This pipeline shows the effect of quarktv on a test stream.
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* </refsect2>
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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 <math.h>
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#include <string.h>
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#include "gstquark.h"
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#include "gsteffectv.h"
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/* number of frames of time-buffer. It should be as a configurable paramater */
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/* This number also must be 2^n just for the speed. */
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#define PLANES 16
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enum
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{
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PROP_0,
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PROP_PLANES
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};
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#define gst_quarktv_parent_class parent_class
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G_DEFINE_TYPE (GstQuarkTV, gst_quarktv, GST_TYPE_VIDEO_FILTER);
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static void gst_quarktv_planetable_clear (GstQuarkTV * filter);
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static GstStaticPadTemplate gst_quarktv_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 (GST_VIDEO_CAPS_MAKE ("{ xRGB, xBGR, BGRx, RGBx }"))
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);
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static GstStaticPadTemplate gst_quarktv_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 (GST_VIDEO_CAPS_MAKE ("{ xRGB, xBGR, BGRx, RGBx }"))
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);
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static gboolean
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gst_quarktv_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
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GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
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{
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GstQuarkTV *filter = GST_QUARKTV (vfilter);
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gint width, height;
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width = GST_VIDEO_INFO_WIDTH (in_info);
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height = GST_VIDEO_INFO_HEIGHT (in_info);
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gst_quarktv_planetable_clear (filter);
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filter->area = width * height;
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return TRUE;
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}
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static GstFlowReturn
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gst_quarktv_transform_frame (GstVideoFilter * vfilter, GstVideoFrame * in_frame,
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GstVideoFrame * out_frame)
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{
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GstQuarkTV *filter = GST_QUARKTV (vfilter);
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gint area;
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guint32 *src, *dest;
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GstClockTime timestamp;
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GstBuffer **planetable;
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gint planes, current_plane;
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timestamp = GST_BUFFER_TIMESTAMP (in_frame->buffer);
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timestamp =
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gst_segment_to_stream_time (&GST_BASE_TRANSFORM (vfilter)->segment,
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GST_FORMAT_TIME, timestamp);
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GST_DEBUG_OBJECT (filter, "sync to %" GST_TIME_FORMAT,
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GST_TIME_ARGS (timestamp));
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if (GST_CLOCK_TIME_IS_VALID (timestamp))
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gst_object_sync_values (GST_OBJECT (filter), timestamp);
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if (G_UNLIKELY (filter->planetable == NULL))
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return GST_FLOW_FLUSHING;
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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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GST_OBJECT_LOCK (filter);
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area = filter->area;
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planetable = filter->planetable;
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planes = filter->planes;
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current_plane = filter->current_plane;
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if (planetable[current_plane])
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gst_buffer_unref (planetable[current_plane]);
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planetable[current_plane] = gst_buffer_ref (in_frame->buffer);
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/* For each pixel */
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while (--area) {
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GstBuffer *rand;
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/* pick a random buffer */
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rand = planetable[(current_plane + (fastrand () >> 24)) % planes];
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/* Copy the pixel from the random buffer to dest, FIXME, slow */
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if (rand)
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gst_buffer_extract (rand, area * 4, &dest[area], 4);
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else
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dest[area] = src[area];
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}
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filter->current_plane--;
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if (filter->current_plane < 0)
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filter->current_plane = planes - 1;
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GST_OBJECT_UNLOCK (filter);
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return GST_FLOW_OK;
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}
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static void
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gst_quarktv_planetable_clear (GstQuarkTV * filter)
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{
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gint i;
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if (filter->planetable == NULL)
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return;
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for (i = 0; i < filter->planes; i++) {
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if (GST_IS_BUFFER (filter->planetable[i])) {
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gst_buffer_unref (filter->planetable[i]);
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}
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filter->planetable[i] = NULL;
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}
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}
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static gboolean
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gst_quarktv_start (GstBaseTransform * trans)
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{
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GstQuarkTV *filter = GST_QUARKTV (trans);
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if (filter->planetable) {
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gst_quarktv_planetable_clear (filter);
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g_free (filter->planetable);
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}
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filter->planetable =
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(GstBuffer **) g_malloc0 (filter->planes * sizeof (GstBuffer *));
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return TRUE;
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}
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static void
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gst_quarktv_finalize (GObject * object)
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{
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GstQuarkTV *filter = GST_QUARKTV (object);
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if (filter->planetable) {
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gst_quarktv_planetable_clear (filter);
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g_free (filter->planetable);
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filter->planetable = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_quarktv_set_property (GObject * object, guint prop_id, const GValue * value,
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GParamSpec * pspec)
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{
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GstQuarkTV *filter = GST_QUARKTV (object);
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GST_OBJECT_LOCK (filter);
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switch (prop_id) {
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case PROP_PLANES:
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{
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gint new_n_planes = g_value_get_int (value);
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GstBuffer **new_planetable;
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gint i;
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/* If the number of planes changed, copy across any existing planes */
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if (new_n_planes != filter->planes) {
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new_planetable =
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(GstBuffer **) g_malloc0 (new_n_planes * sizeof (GstBuffer *));
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if (filter->planetable) {
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for (i = 0; (i < new_n_planes) && (i < filter->planes); i++) {
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new_planetable[i] = filter->planetable[i];
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}
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for (; i < filter->planes; i++) {
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if (filter->planetable[i])
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gst_buffer_unref (filter->planetable[i]);
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}
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g_free (filter->planetable);
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}
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filter->planetable = new_planetable;
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filter->planes = new_n_planes;
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filter->current_plane = filter->planes - 1;
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}
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break;
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}
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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GST_OBJECT_UNLOCK (filter);
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}
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static void
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gst_quarktv_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstQuarkTV *filter = GST_QUARKTV (object);
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switch (prop_id) {
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case PROP_PLANES:
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g_value_set_int (value, filter->planes);
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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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break;
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}
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}
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static void
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gst_quarktv_class_init (GstQuarkTVClass * 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_quarktv_set_property;
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gobject_class->get_property = gst_quarktv_get_property;
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gobject_class->finalize = gst_quarktv_finalize;
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g_object_class_install_property (gobject_class, PROP_PLANES,
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g_param_spec_int ("planes", "Planes",
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"Number of planes", 0, 64, PLANES,
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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, "QuarkTV effect",
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"Filter/Effect/Video",
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"Motion dissolver", "FUKUCHI, Kentarou <fukuchi@users.sourceforge.net>");
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_quarktv_sink_template));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_quarktv_src_template));
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trans_class->start = GST_DEBUG_FUNCPTR (gst_quarktv_start);
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vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_quarktv_set_info);
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vfilter_class->transform_frame =
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GST_DEBUG_FUNCPTR (gst_quarktv_transform_frame);
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}
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static void
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gst_quarktv_init (GstQuarkTV * filter)
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{
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filter->planes = PLANES;
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filter->current_plane = filter->planes - 1;
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}
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