/* * GStreamer * Copyright (C) 2010 Luis de Bethencourt * * Solarize - curve adjustment video effect. * Based on Pete Warden's FreeFrame plugin with the same name. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Alternatively, the contents of this file may be used under the * GNU Lesser General Public License Version 2.1 (the "LGPL"), in * which case the following provisions apply instead of the ones * mentioned above: * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION:element-solarize * * Solarize does a smart inverse in a video stream in realtime. * * * Example launch line * |[ * gst-launch -v videotestsrc ! solarize ! ffmpegcolorspace ! autovideosink * ]| This pipeline shows the effect of solarize on a test stream * */ #ifdef HAVE_CONFIG_H # include #endif #include #include #include "gstplugin.h" #include "gstsolarize.h" #include #include GST_DEBUG_CATEGORY_STATIC (gst_solarize_debug); #define GST_CAT_DEFAULT gst_solarize_debug #if G_BYTE_ORDER == G_LITTLE_ENDIAN #define CAPS_STR GST_VIDEO_CAPS_BGRx ";" GST_VIDEO_CAPS_RGBx #else #define CAPS_STR GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_xBGR #endif /* Filter signals and args. */ enum { LAST_SIGNAL }; enum { PROP_0 = 0, PROP_THRESHOLD, PROP_START, PROP_END, PROP_SILENT }; /* Initializations */ #define DEFAULT_THRESHOLD 127 #define DEFAULT_START 50 #define DEFAULT_END 185 static gint gate_int (gint value, gint min, gint max); static void transform (guint32 * src, guint32 * dest, gint video_area, gint threshold, gint start, gint end); /* The capabilities of the inputs and outputs. */ static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (CAPS_STR) ); static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (CAPS_STR) ); GST_BOILERPLATE (GstSolarize, gst_solarize, GstVideoFilter, GST_TYPE_VIDEO_FILTER); static void gst_solarize_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_solarize_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static gboolean gst_solarize_set_caps (GstBaseTransform * btrans, GstCaps * incaps, GstCaps * outcaps); static GstFlowReturn gst_solarize_transform (GstBaseTransform * btrans, GstBuffer * in_buf, GstBuffer * out_buf); /* GObject vmethod implementations */ static void gst_solarize_base_init (gpointer gclass) { GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); gst_element_class_set_details_simple (element_class, "Solarize", "Filter/Effect/Video", "Solarize tunable inverse in the video signal.", "Luis de Bethencourt "); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&src_factory)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sink_factory)); } /* Initialize the solarize's class. */ static void gst_solarize_class_init (GstSolarizeClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass; gobject_class->set_property = gst_solarize_set_property; gobject_class->get_property = gst_solarize_get_property; g_object_class_install_property (gobject_class, PROP_THRESHOLD, g_param_spec_uint ("threshold", "Threshold", "Threshold parameter", 0, 256, DEFAULT_THRESHOLD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE)); g_object_class_install_property (gobject_class, PROP_START, g_param_spec_uint ("start", "Start", "Start parameter", 0, 256, DEFAULT_START, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE)); g_object_class_install_property (gobject_class, PROP_END, g_param_spec_uint ("end", "End", "End parameter", 0, 256, DEFAULT_END, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE)); g_object_class_install_property (gobject_class, PROP_SILENT, g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_solarize_set_caps); trans_class->transform = GST_DEBUG_FUNCPTR (gst_solarize_transform); } /* Initialize the element, * instantiate pads and add them to element, * set pad calback functions, and * initialize instance structure. */ static void gst_solarize_init (GstSolarize * filter, GstSolarizeClass * gclass) { filter->threshold = DEFAULT_THRESHOLD; filter->start = DEFAULT_START; filter->end = DEFAULT_END; filter->silent = FALSE; } static void gst_solarize_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstSolarize *filter = GST_SOLARIZE (object); switch (prop_id) { case PROP_SILENT: filter->silent = g_value_get_boolean (value); break; case PROP_THRESHOLD: filter->threshold = g_value_get_uint (value); break; case PROP_START: filter->start = g_value_get_uint (value); break; case PROP_END: filter->end = g_value_get_uint (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_solarize_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstSolarize *filter = GST_SOLARIZE (object); GST_OBJECT_LOCK (filter); switch (prop_id) { case PROP_SILENT: g_value_set_boolean (value, filter->silent); break; case PROP_THRESHOLD: g_value_set_uint (value, filter->threshold); break; case PROP_START: g_value_set_uint (value, filter->start); break; case PROP_END: g_value_set_uint (value, filter->end); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } GST_OBJECT_UNLOCK (filter); } /* GstElement vmethod implementations */ /* Handle the link with other elements. */ static gboolean gst_solarize_set_caps (GstBaseTransform * btrans, GstCaps * incaps, GstCaps * outcaps) { GstSolarize *filter = GST_SOLARIZE (btrans); GstStructure *structure; gboolean ret = FALSE; GST_OBJECT_LOCK (filter); structure = gst_caps_get_structure (incaps, 0); if (gst_structure_get_int (structure, "width", &filter->width) && gst_structure_get_int (structure, "height", &filter->height)) { ret = TRUE; } GST_OBJECT_UNLOCK (filter); return ret; } /* Actual processing. */ static GstFlowReturn gst_solarize_transform (GstBaseTransform * btrans, GstBuffer * in_buf, GstBuffer * out_buf) { GstSolarize *filter = GST_SOLARIZE (btrans); gint video_size, threshold, start, end; guint32 *src = (guint32 *) GST_BUFFER_DATA (in_buf); guint32 *dest = (guint32 *) GST_BUFFER_DATA (out_buf); GstClockTime timestamp; gint64 stream_time; /* GstController: update the properties */ timestamp = GST_BUFFER_TIMESTAMP (in_buf); stream_time = gst_segment_to_stream_time (&btrans->segment, GST_FORMAT_TIME, timestamp); GST_DEBUG_OBJECT (filter, "sync to %" GST_TIME_FORMAT, GST_TIME_ARGS (timestamp)); if (GST_CLOCK_TIME_IS_VALID (stream_time)) gst_object_sync_values (GST_OBJECT (filter), stream_time); GST_OBJECT_LOCK (filter); threshold = filter->threshold; start = filter->start; end = filter->end; GST_OBJECT_UNLOCK (filter); video_size = filter->width * filter->height; transform (src, dest, video_size, threshold, start, end); return GST_FLOW_OK; } /* Entry point to initialize the plug-in. * Register the element factories and other features. */ gboolean gst_solarize_plugin_init (GstPlugin * solarize) { /* debug category for fltering log messages */ GST_DEBUG_CATEGORY_INIT (gst_solarize_debug, "solarize", 0, "Template solarize"); return gst_element_register (solarize, "solarize", GST_RANK_NONE, GST_TYPE_SOLARIZE); } /*** Now the image processing work.... ***/ /* Keep the values inbounds. */ static gint gate_int (gint value, gint min, gint max) { if (value < min) { return min; } else if (value > max) { return max; } else { return value; } } /* Transform processes each frame. */ static void transform (guint32 * src, guint32 * dest, gint video_area, gint threshold, gint start, gint end) { guint32 in; guint32 color[3]; gint x, c; gint floor = 0; gint ceiling = 255; gint period, up_length, down_length, height_scale, param; period = end - start; if (period == 0) { period = 1; } up_length = threshold - start; if (up_length == 0) { up_length = 1; } down_length = end - threshold; if (down_length == 0) { down_length = 1; } height_scale = ceiling - floor; /* Loop through pixels. */ for (x = 0; x < video_area; x++) { in = *src++; color[0] = (in >> 16) & 0xff; color[1] = (in >> 8) & 0xff; color[2] = (in) & 0xff; /* Loop through colors. */ for (c = 0; c < 3; c++) { param = color[c]; param += 256; param -= start; param %= period; if (param < up_length) { color[c] = param * height_scale; color[c] /= up_length; color[c] += floor; } else { color[c] = down_length - (param - up_length); color[c] *= height_scale; color[c] /= down_length; color[c] += floor; } } color[0] = gate_int (color[0], 0, 255); color[1] = gate_int (color[1], 0, 255); color[2] = gate_int (color[2], 0, 255); *dest++ = (color[0] << 16) | (color[1] << 8) | color[2]; } }