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259 lines
7.7 KiB
C
259 lines
7.7 KiB
C
/*
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* GStreamer
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* Copyright (C) <2010-2015> Luis de Bethencourt <luis@debethencourt.com>
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*
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* Burn - curve adjustment video effect.
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* Based on Pete Warden's FreeFrame plugin with the same name.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Alternatively, the contents of this file may be used under the
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* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
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* which case the following provisions apply instead of the ones
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* mentioned above:
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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-burn
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* @title: burn
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*
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* Burn adjusts the colors of a video stream in realtime.
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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 ! burn ! videoconvert ! autovideosink
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* ]| This pipeline shows the effect of burn 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 <gst/gst.h>
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#include <math.h>
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#include "gstplugin.h"
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#include "gstburn.h"
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#include "gstgaudieffectsorc.h"
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#define gst_burn_parent_class parent_class
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G_DEFINE_TYPE (GstBurn, gst_burn, GST_TYPE_VIDEO_FILTER);
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GST_DEBUG_CATEGORY_STATIC (gst_burn_debug);
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#define GST_CAT_DEFAULT gst_burn_debug
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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 ("{ xBGR, xRGB }")
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#endif
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/* Filter signals and args. */
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enum
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{
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LAST_SIGNAL
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};
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enum
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{
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PROP_0 = 0,
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PROP_ADJUSTMENT,
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};
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/* Initializations */
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#define DEFAULT_ADJUSTMENT 175
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/* The capabilities of the inputs and outputs. */
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static GstStaticPadTemplate gst_burn_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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static GstStaticPadTemplate gst_burn_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 void gst_burn_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_burn_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_burn_finalize (GObject * object);
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static GstFlowReturn gst_burn_transform_frame (GstVideoFilter * vfilter,
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GstVideoFrame * in_frame, GstVideoFrame * out_frame);
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/* GObject vmethod implementations */
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/* Initialize the burn's class. */
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static void
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gst_burn_class_init (GstBurnClass * 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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GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
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gst_element_class_set_static_metadata (gstelement_class, "Burn",
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"Filter/Effect/Video",
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"Burn adjusts the colors in the video signal.",
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"Luis de Bethencourt <luis@debethencourt.com>");
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_burn_sink_template);
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_burn_src_template);
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gobject_class->set_property = gst_burn_set_property;
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gobject_class->get_property = gst_burn_get_property;
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gobject_class->finalize = gst_burn_finalize;
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g_object_class_install_property (gobject_class, PROP_ADJUSTMENT,
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g_param_spec_uint ("adjustment", "Adjustment",
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"Adjustment parameter", 0, 256, DEFAULT_ADJUSTMENT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
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vfilter_class->transform_frame = GST_DEBUG_FUNCPTR (gst_burn_transform_frame);
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}
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/* Initialize the element,
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* instantiate pads and add them to element,
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* set pad callback functions, and
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* initialize instance structure.
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*/
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static void
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gst_burn_init (GstBurn * filter)
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{
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filter->adjustment = DEFAULT_ADJUSTMENT;
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}
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static void
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gst_burn_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstBurn *filter = GST_BURN (object);
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switch (prop_id) {
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case PROP_ADJUSTMENT:
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filter->adjustment = g_value_get_uint (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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break;
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}
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}
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static void
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gst_burn_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstBurn *filter = GST_BURN (object);
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GST_OBJECT_LOCK (filter);
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switch (prop_id) {
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case PROP_ADJUSTMENT:
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g_value_set_uint (value, filter->adjustment);
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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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GST_OBJECT_UNLOCK (filter);
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}
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static void
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gst_burn_finalize (GObject * object)
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{
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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/* GstElement vmethod implementations */
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/* Actual processing. */
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static GstFlowReturn
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gst_burn_transform_frame (GstVideoFilter * vfilter,
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GstVideoFrame * in_frame, GstVideoFrame * out_frame)
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{
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GstBurn *filter = GST_BURN (vfilter);
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gint video_size, adjustment;
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guint32 *src, *dest;
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GstClockTime timestamp;
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gint64 stream_time;
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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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video_size = GST_VIDEO_FRAME_WIDTH (in_frame) *
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GST_VIDEO_FRAME_HEIGHT (in_frame);
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/* GstController: update the properties */
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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 (filter, "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 (filter), stream_time);
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GST_OBJECT_LOCK (filter);
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adjustment = filter->adjustment;
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GST_OBJECT_UNLOCK (filter);
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/*** Now the image processing work.... ***/
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gaudi_orc_burn (dest, src, adjustment, video_size);
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return GST_FLOW_OK;
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}
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/* Entry point to initialize the plug-in.
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* Register the element factories and other features. */
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gboolean
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gst_burn_plugin_init (GstPlugin * burn)
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{
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/* debug category for fltering log messages */
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GST_DEBUG_CATEGORY_INIT (gst_burn_debug, "burn", 0, "Template burn");
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return gst_element_register (burn, "burn", GST_RANK_NONE, GST_TYPE_BURN);
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}
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