/* GStreamer * Copyright (C) <1999> Erik Walthinsen * Copyright (C) <2003> David Schleef * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstnavigationtest.h" #include #include #include #ifdef _MSC_VER #define rint(x) (floor((x)+0.5)) #endif GST_DEBUG_CATEGORY_STATIC (navigationtest_debug); #define GST_CAT_DEFAULT navigationtest_debug static GstStaticPadTemplate gst_navigationtest_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("I420")) ); static GstStaticPadTemplate gst_navigationtest_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("I420")) ); #define gst_navigationtest_parent_class parent_class G_DEFINE_TYPE (GstNavigationtest, gst_navigationtest, GST_TYPE_VIDEO_FILTER); GST_ELEMENT_REGISTER_DEFINE (navigationtest, "navigationtest", GST_RANK_NONE, GST_TYPE_NAVIGATIONTEST); static gboolean gst_navigationtest_src_event (GstBaseTransform * trans, GstEvent * event) { GstVideoInfo *info; GstNavigationtest *navtest; const gchar *type; navtest = GST_NAVIGATIONTEST (trans); info = &GST_VIDEO_FILTER (trans)->in_info; switch (GST_EVENT_TYPE (event)) { case GST_EVENT_NAVIGATION: { const GstStructure *s = gst_event_get_structure (event); gint fps_n, fps_d; fps_n = GST_VIDEO_INFO_FPS_N (info); fps_d = GST_VIDEO_INFO_FPS_D (info); type = gst_structure_get_string (s, "event"); if (g_str_equal (type, "mouse-move")) { gst_structure_get_double (s, "pointer_x", &navtest->x); gst_structure_get_double (s, "pointer_y", &navtest->y); } else if (g_str_equal (type, "mouse-button-press")) { ButtonClick *click = g_new (ButtonClick, 1); gst_structure_get_double (s, "pointer_x", &click->x); gst_structure_get_double (s, "pointer_y", &click->y); click->images_left = (fps_n + fps_d - 1) / fps_d; /* green */ click->cy = 150; click->cu = 46; click->cv = 21; navtest->clicks = g_slist_prepend (navtest->clicks, click); } else if (g_str_equal (type, "mouse-button-release")) { ButtonClick *click = g_new (ButtonClick, 1); gst_structure_get_double (s, "pointer_x", &click->x); gst_structure_get_double (s, "pointer_y", &click->y); click->images_left = (fps_n + fps_d - 1) / fps_d; /* red */ click->cy = 76; click->cu = 85; click->cv = 255; navtest->clicks = g_slist_prepend (navtest->clicks, click); } break; } default: break; } return GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event); } /* Useful macros */ #define GST_VIDEO_I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width)) #define GST_VIDEO_I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2) #define GST_VIDEO_I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(GST_VIDEO_I420_Y_ROWSTRIDE(width)))/2) #define GST_VIDEO_I420_Y_OFFSET(w,h) (0) #define GST_VIDEO_I420_U_OFFSET(w,h) (GST_VIDEO_I420_Y_OFFSET(w,h)+(GST_VIDEO_I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h))) #define GST_VIDEO_I420_V_OFFSET(w,h) (GST_VIDEO_I420_U_OFFSET(w,h)+(GST_VIDEO_I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2)) #define GST_VIDEO_I420_SIZE(w,h) (GST_VIDEO_I420_V_OFFSET(w,h)+(GST_VIDEO_I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2)) static void draw_box_planar411 (GstVideoFrame * frame, int x, int y, guint8 colory, guint8 coloru, guint8 colorv) { gint width, height; int x1, x2, y1, y2; guint8 *d; gint stride; width = GST_VIDEO_FRAME_WIDTH (frame); height = GST_VIDEO_FRAME_HEIGHT (frame); if (x < 0 || y < 0 || x >= width || y >= height) return; x1 = MAX (x - 5, 0); x2 = MIN (x + 5, width); y1 = MAX (y - 5, 0); y2 = MIN (y + 5, height); d = GST_VIDEO_FRAME_PLANE_DATA (frame, 0); stride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0); for (y = y1; y < y2; y++) { for (x = x1; x < x2; x++) { d[y * stride + x] = colory; } } d = GST_VIDEO_FRAME_PLANE_DATA (frame, 1); stride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 1); x1 /= 2; x2 /= 2; y1 /= 2; y2 /= 2; for (y = y1; y < y2; y++) { for (x = x1; x < x2; x++) { d[y * stride + x] = coloru; } } d = GST_VIDEO_FRAME_PLANE_DATA (frame, 2); stride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 2); for (y = y1; y < y2; y++) { for (x = x1; x < x2; x++) { d[y * stride + x] = colorv; } } } static GstFlowReturn gst_navigationtest_transform_frame (GstVideoFilter * filter, GstVideoFrame * in_frame, GstVideoFrame * out_frame) { GstNavigationtest *navtest = GST_NAVIGATIONTEST (filter); GSList *walk; gst_video_frame_copy (out_frame, in_frame); walk = navtest->clicks; while (walk) { ButtonClick *click = walk->data; walk = g_slist_next (walk); draw_box_planar411 (out_frame, rint (click->x), rint (click->y), click->cy, click->cu, click->cv); if (--click->images_left < 1) { navtest->clicks = g_slist_remove (navtest->clicks, click); g_free (click); } } draw_box_planar411 (out_frame, rint (navtest->x), rint (navtest->y), 0, 128, 128); return GST_FLOW_OK; } static GstStateChangeReturn gst_navigationtest_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; GstNavigationtest *navtest = GST_NAVIGATIONTEST (element); if (GST_ELEMENT_CLASS (parent_class)->change_state) ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); /* downwards state changes */ switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: { g_slist_foreach (navtest->clicks, (GFunc) g_free, NULL); g_slist_free (navtest->clicks); navtest->clicks = NULL; break; } default: break; } return ret; } static void gst_navigationtest_class_init (GstNavigationtestClass * klass) { GstElementClass *element_class; GstBaseTransformClass *trans_class; GstVideoFilterClass *vfilter_class; element_class = (GstElementClass *) klass; trans_class = (GstBaseTransformClass *) klass; vfilter_class = (GstVideoFilterClass *) klass; element_class->change_state = GST_DEBUG_FUNCPTR (gst_navigationtest_change_state); gst_element_class_set_static_metadata (element_class, "Video navigation test", "Filter/Effect/Video", "Handle navigation events showing a black square following mouse pointer", "David Schleef "); gst_element_class_add_static_pad_template (element_class, &gst_navigationtest_sink_template); gst_element_class_add_static_pad_template (element_class, &gst_navigationtest_src_template); trans_class->src_event = GST_DEBUG_FUNCPTR (gst_navigationtest_src_event); vfilter_class->transform_frame = GST_DEBUG_FUNCPTR (gst_navigationtest_transform_frame); } static void gst_navigationtest_init (GstNavigationtest * navtest) { navtest->x = -1; navtest->y = -1; } static gboolean plugin_init (GstPlugin * plugin) { GST_DEBUG_CATEGORY_INIT (navigationtest_debug, "navigationtest", 0, "navigationtest"); return GST_ELEMENT_REGISTER (navigationtest, plugin); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, navigationtest, "Template for a video filter", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)