/* 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, 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 const GstElementDetails navigationtest_details = GST_ELEMENT_DETAILS ("Video navigation test", "Filter/Effect/Video", "Handle navigation events showing a black square following mouse pointer", "David Schleef "); static GstStaticPadTemplate gst_navigationtest_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")) ); static GstStaticPadTemplate gst_navigationtest_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")) ); static GstVideoFilterClass *parent_class = NULL; static gboolean gst_navigationtest_handle_src_event (GstPad * pad, GstEvent * event) { GstNavigationtest *navtest; const gchar *type; navtest = GST_NAVIGATIONTEST (GST_PAD_PARENT (pad)); 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_value_get_fraction_numerator ((&navtest->framerate)); fps_d = gst_value_get_fraction_denominator ((&navtest->framerate)); 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_pad_event_default (pad, 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 gboolean gst_navigationtest_get_unit_size (GstBaseTransform * btrans, GstCaps * caps, guint * size) { GstNavigationtest *navtest; GstStructure *structure; gboolean ret = FALSE; gint width, height; navtest = GST_NAVIGATIONTEST (btrans); structure = gst_caps_get_structure (caps, 0); if (gst_structure_get_int (structure, "width", &width) && gst_structure_get_int (structure, "height", &height)) { *size = GST_VIDEO_I420_SIZE (width, height); ret = TRUE; GST_DEBUG_OBJECT (navtest, "our frame size is %d bytes (%dx%d)", *size, width, height); } return ret; } static gboolean gst_navigationtest_set_caps (GstBaseTransform * btrans, GstCaps * incaps, GstCaps * outcaps) { GstNavigationtest *navtest = GST_NAVIGATIONTEST (btrans); gboolean ret = FALSE; GstStructure *structure; structure = gst_caps_get_structure (incaps, 0); if (gst_structure_get_int (structure, "width", &navtest->width) && gst_structure_get_int (structure, "height", &navtest->height)) { const GValue *framerate; framerate = gst_structure_get_value (structure, "framerate"); if (framerate && GST_VALUE_HOLDS_FRACTION (framerate)) { g_value_copy (framerate, &navtest->framerate); ret = TRUE; } } return ret; } static void draw_box_planar411 (guint8 * dest, int width, int height, int x, int y, guint8 colory, guint8 coloru, guint8 colorv) { int x1, x2, y1, y2; guint8 *d = dest; 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); for (y = y1; y < y2; y++) { for (x = x1; x < x2; x++) { ((guint8 *) d)[y * GST_VIDEO_I420_Y_ROWSTRIDE (width) + x] = colory; } } d = dest + GST_VIDEO_I420_U_OFFSET (width, height); x1 /= 2; x2 /= 2; y1 /= 2; y2 /= 2; for (y = y1; y < y2; y++) { for (x = x1; x < x2; x++) { ((guint8 *) d)[y * GST_VIDEO_I420_U_ROWSTRIDE (width) + x] = coloru; } } d = dest + GST_VIDEO_I420_V_OFFSET (width, height); for (y = y1; y < y2; y++) { for (x = x1; x < x2; x++) { ((guint8 *) d)[y * GST_VIDEO_I420_V_ROWSTRIDE (width) + x] = colorv; } } } static GstFlowReturn gst_navigationtest_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out) { GstNavigationtest *navtest = GST_NAVIGATIONTEST (trans); GSList *walk; GstFlowReturn ret = GST_FLOW_OK; /* do something interesting here. This simply copies the source * to the destination. */ gst_buffer_copy_metadata (out, in, GST_BUFFER_COPY_TIMESTAMPS); memcpy (GST_BUFFER_DATA (out), GST_BUFFER_DATA (in), MIN (GST_BUFFER_SIZE (in), GST_BUFFER_SIZE (out))); walk = navtest->clicks; while (walk) { ButtonClick *click = walk->data; walk = g_slist_next (walk); draw_box_planar411 (GST_BUFFER_DATA (out), navtest->width, navtest->height, 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 (GST_BUFFER_DATA (out), navtest->width, navtest->height, rint (navtest->x), rint (navtest->y), 0, 128, 128); return ret; } 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_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_set_details (element_class, &navigationtest_details); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_navigationtest_sink_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_navigationtest_src_template)); } static void gst_navigationtest_class_init (gpointer klass, gpointer class_data) { GstElementClass *element_class; GstBaseTransformClass *trans_class; element_class = (GstElementClass *) klass; trans_class = (GstBaseTransformClass *) klass; parent_class = g_type_class_peek_parent (klass); element_class->change_state = GST_DEBUG_FUNCPTR (gst_navigationtest_change_state); trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_navigationtest_set_caps); trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_navigationtest_get_unit_size); trans_class->transform = GST_DEBUG_FUNCPTR (gst_navigationtest_transform); } static void gst_navigationtest_init (GTypeInstance * instance, gpointer g_class) { GstNavigationtest *navtest = GST_NAVIGATIONTEST (instance); GstBaseTransform *btrans = GST_BASE_TRANSFORM (instance); gst_pad_set_event_function (btrans->srcpad, GST_DEBUG_FUNCPTR (gst_navigationtest_handle_src_event)); navtest->x = -1; navtest->y = -1; g_value_init (&navtest->framerate, GST_TYPE_FRACTION); } GType gst_navigationtest_get_type (void) { static GType navigationtest_type = 0; if (!navigationtest_type) { static const GTypeInfo navigationtest_info = { sizeof (GstNavigationtestClass), gst_navigationtest_base_init, NULL, gst_navigationtest_class_init, NULL, NULL, sizeof (GstNavigationtest), 0, gst_navigationtest_init, }; navigationtest_type = g_type_register_static (GST_TYPE_VIDEO_FILTER, "GstNavigationtest", &navigationtest_info, 0); } return navigationtest_type; } static gboolean plugin_init (GstPlugin * plugin) { GST_DEBUG_CATEGORY_INIT (navigationtest_debug, "navigationtest", 0, "navigationtest"); return gst_element_register (plugin, "navigationtest", GST_RANK_NONE, GST_TYPE_NAVIGATIONTEST); } 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)