/* GStreamer * Copyright (C) <1999> Erik Walthinsen * * 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-smpte * * smpte can accept I420 video streams with the same width, height and * framerate. The two incomming buffers are blended together using an effect * specific alpha mask. * * The #GstSmpte:depth property defines the presision in bits of the mask. A * higher presision will create a mask with smoother gradients in order to avoid * banding. * * * Sample pipelines * |[ * gst-launch -v videotestsrc pattern=1 ! smpte name=s border=20000 type=234 duration=2000000000 ! ffmpegcolorspace ! ximagesink videotestsrc ! s. * ]| A pipeline to demonstrate the smpte transition. * It shows a pinwheel transition a from a snow videotestsrc to an smpte * pattern videotestsrc. The transition will take 2 seconds to complete. The * edges of the transition are smoothed with a 20000 big border. * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "gstsmpte.h" #include #include "paint.h" GST_DEBUG_CATEGORY_STATIC (gst_smpte_debug); #define GST_CAT_DEFAULT gst_smpte_debug /* elementfactory information */ static const GstElementDetails smpte_details = GST_ELEMENT_DETAILS ("SMPTE transitions", "Filter/Editor/Video", "Apply the standard SMPTE transitions on video images", "Wim Taymans "); static GstStaticPadTemplate gst_smpte_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420") ) ); static GstStaticPadTemplate gst_smpte_sink1_template = GST_STATIC_PAD_TEMPLATE ("sink1", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420") ) ); static GstStaticPadTemplate gst_smpte_sink2_template = GST_STATIC_PAD_TEMPLATE ("sink2", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420") ) ); /* SMPTE signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; #define DEFAULT_PROP_TYPE 1 #define DEFAULT_PROP_BORDER 0 #define DEFAULT_PROP_DEPTH 16 #define DEFAULT_PROP_FPS 0. #define DEFAULT_PROP_DURATION GST_SECOND enum { PROP_0, PROP_TYPE, PROP_BORDER, PROP_DEPTH, PROP_FPS, PROP_DURATION, PROP_LAST, }; #define I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width)) #define I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2) #define I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(I420_Y_ROWSTRIDE(width)))/2) #define I420_Y_OFFSET(w,h) (0) #define I420_U_OFFSET(w,h) (I420_Y_OFFSET(w,h)+(I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h))) #define I420_V_OFFSET(w,h) (I420_U_OFFSET(w,h)+(I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2)) #define I420_SIZE(w,h) (I420_V_OFFSET(w,h)+(I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2)) #define GST_TYPE_SMPTE_TRANSITION_TYPE (gst_smpte_transition_type_get_type()) static GType gst_smpte_transition_type_get_type (void) { static GType smpte_transition_type = 0; GEnumValue *smpte_transitions; if (!smpte_transition_type) { const GList *definitions; gint i = 0; definitions = gst_mask_get_definitions (); smpte_transitions = g_new0 (GEnumValue, g_list_length ((GList *) definitions) + 1); while (definitions) { GstMaskDefinition *definition = (GstMaskDefinition *) definitions->data; definitions = g_list_next (definitions); smpte_transitions[i].value = definition->type; /* older GLib versions have the two fields as non-const, hence the cast */ smpte_transitions[i].value_nick = (gchar *) definition->short_name; smpte_transitions[i].value_name = (gchar *) definition->long_name; i++; } smpte_transition_type = g_enum_register_static ("GstSMPTETransitionType", smpte_transitions); } return smpte_transition_type; } static void gst_smpte_class_init (GstSMPTEClass * klass); static void gst_smpte_base_init (GstSMPTEClass * klass); static void gst_smpte_init (GstSMPTE * smpte); static void gst_smpte_finalize (GstSMPTE * smpte); static GstFlowReturn gst_smpte_collected (GstCollectPads * pads, GstSMPTE * smpte); static void gst_smpte_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_smpte_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstStateChangeReturn gst_smpte_change_state (GstElement * element, GstStateChange transition); static GstElementClass *parent_class = NULL; /*static guint gst_smpte_signals[LAST_SIGNAL] = { 0 }; */ static GType gst_smpte_get_type (void) { static GType smpte_type = 0; if (!smpte_type) { static const GTypeInfo smpte_info = { sizeof (GstSMPTEClass), (GBaseInitFunc) gst_smpte_base_init, NULL, (GClassInitFunc) gst_smpte_class_init, NULL, NULL, sizeof (GstSMPTE), 0, (GInstanceInitFunc) gst_smpte_init, }; smpte_type = g_type_register_static (GST_TYPE_ELEMENT, "GstSMPTE", &smpte_info, 0); } return smpte_type; } static void gst_smpte_base_init (GstSMPTEClass * klass) { GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_smpte_sink1_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_smpte_sink2_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_smpte_src_template)); gst_element_class_set_details (element_class, &smpte_details); } static void gst_smpte_class_init (GstSMPTEClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; parent_class = g_type_class_peek_parent (klass); gobject_class->set_property = gst_smpte_set_property; gobject_class->get_property = gst_smpte_get_property; gobject_class->finalize = (GObjectFinalizeFunc) gst_smpte_finalize; _gst_mask_init (); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TYPE, g_param_spec_enum ("type", "Type", "The type of transition to use", GST_TYPE_SMPTE_TRANSITION_TYPE, DEFAULT_PROP_TYPE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FPS, g_param_spec_float ("fps", "FPS", "Frames per second if no input files are given (deprecated)", 0., G_MAXFLOAT, DEFAULT_PROP_FPS, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BORDER, g_param_spec_int ("border", "Border", "The border width of the transition", 0, G_MAXINT, DEFAULT_PROP_BORDER, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEPTH, g_param_spec_int ("depth", "Depth", "Depth of the mask in bits", 1, 24, DEFAULT_PROP_DEPTH, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DURATION, g_param_spec_uint64 ("duration", "Duration", "Duration of the transition effect in nanoseconds", 0, G_MAXUINT64, DEFAULT_PROP_DURATION, G_PARAM_READWRITE)); gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_smpte_change_state); } /* wht yel cya grn mag red blu blk -I Q */ static const int y_colors[] = { 255, 226, 179, 150, 105, 76, 29, 16, 16, 0 }; static const int u_colors[] = { 128, 0, 170, 46, 212, 85, 255, 128, 0, 128 }; static const int v_colors[] = { 128, 155, 0, 21, 235, 255, 107, 128, 128, 255 }; static void fill_i420 (guint8 * data, gint width, gint height, gint color) { gint size = I420_Y_ROWSTRIDE (width) * GST_ROUND_UP_2 (height); gint size4 = size >> 2; guint8 *yp = data; guint8 *up = data + I420_U_OFFSET (width, height); guint8 *vp = data + I420_V_OFFSET (width, height); memset (yp, y_colors[color], size); memset (up, u_colors[color], size4); memset (vp, v_colors[color], size4); } static gboolean gst_smpte_update_mask (GstSMPTE * smpte, gint type, gint depth, gint width, gint height) { GstMask *newmask; if (smpte->mask) { if (smpte->type == type && smpte->depth == depth && smpte->width == width && smpte->height == height) return TRUE; } newmask = gst_mask_factory_new (type, depth, width, height); if (newmask) { if (smpte->mask) { gst_mask_destroy (smpte->mask); } smpte->mask = newmask; smpte->type = type; smpte->depth = depth; smpte->width = width; smpte->height = height; return TRUE; } return FALSE; } static gboolean gst_smpte_setcaps (GstPad * pad, GstCaps * caps) { GstSMPTE *smpte; GstStructure *structure; gboolean ret; smpte = GST_SMPTE (GST_PAD_PARENT (pad)); structure = gst_caps_get_structure (caps, 0); ret = gst_structure_get_int (structure, "width", &smpte->width); ret &= gst_structure_get_int (structure, "height", &smpte->height); ret &= gst_structure_get_fraction (structure, "framerate", &smpte->fps_num, &smpte->fps_denom); if (!ret) return FALSE; /* for backward compat, we store these here */ smpte->fps = ((gdouble) smpte->fps_num) / smpte->fps_denom; /* figure out the duration in frames */ smpte->end_position = gst_util_uint64_scale (smpte->duration, smpte->fps_num, GST_SECOND * smpte->fps_denom); GST_DEBUG_OBJECT (smpte, "duration: %d frames", smpte->end_position); ret = gst_smpte_update_mask (smpte, smpte->type, smpte->depth, smpte->width, smpte->height); return ret; } static void gst_smpte_init (GstSMPTE * smpte) { smpte->sinkpad1 = gst_pad_new_from_static_template (&gst_smpte_sink1_template, "sink1"); gst_pad_set_setcaps_function (smpte->sinkpad1, GST_DEBUG_FUNCPTR (gst_smpte_setcaps)); gst_pad_set_getcaps_function (smpte->sinkpad1, GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps)); gst_element_add_pad (GST_ELEMENT (smpte), smpte->sinkpad1); smpte->sinkpad2 = gst_pad_new_from_static_template (&gst_smpte_sink2_template, "sink2"); gst_pad_set_setcaps_function (smpte->sinkpad2, GST_DEBUG_FUNCPTR (gst_smpte_setcaps)); gst_pad_set_getcaps_function (smpte->sinkpad2, GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps)); gst_element_add_pad (GST_ELEMENT (smpte), smpte->sinkpad2); smpte->srcpad = gst_pad_new_from_static_template (&gst_smpte_src_template, "src"); gst_element_add_pad (GST_ELEMENT (smpte), smpte->srcpad); smpte->collect = gst_collect_pads_new (); gst_collect_pads_set_function (smpte->collect, (GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_smpte_collected), smpte); gst_collect_pads_start (smpte->collect); gst_collect_pads_add_pad (smpte->collect, smpte->sinkpad1, sizeof (GstCollectData)); gst_collect_pads_add_pad (smpte->collect, smpte->sinkpad2, sizeof (GstCollectData)); smpte->fps = DEFAULT_PROP_FPS; smpte->type = DEFAULT_PROP_TYPE; smpte->border = DEFAULT_PROP_BORDER; smpte->depth = DEFAULT_PROP_DEPTH; smpte->duration = DEFAULT_PROP_DURATION; smpte->fps_num = 0; smpte->fps_denom = 1; } static void gst_smpte_finalize (GstSMPTE * smpte) { if (smpte->collect) { gst_object_unref (smpte->collect); } G_OBJECT_CLASS (parent_class)->finalize ((GObject *) smpte); } static void gst_smpte_reset (GstSMPTE * smpte) { smpte->width = -1; smpte->height = -1; smpte->position = 0; smpte->end_position = 0; } static void gst_smpte_blend_i420 (guint8 * in1, guint8 * in2, guint8 * out, GstMask * mask, gint width, gint height, gint border, gint pos) { guint32 *maskp; gint value; gint i, j; gint min, max; guint8 *in1u, *in1v, *in2u, *in2v, *outu, *outv; gint lumsize = width * height; gint chromsize = lumsize >> 2; if (border == 0) border++; min = pos - border; max = pos; in1u = in1 + lumsize; in1v = in1u + chromsize; in2u = in2 + lumsize; in2v = in2u + chromsize; outu = out + lumsize; outv = outu + chromsize; maskp = mask->data; for (i = 0; i < height; i++) { for (j = 0; j < width; j++) { value = *maskp++; value = ((CLAMP (value, min, max) - min) << 8) / border; *out++ = ((*in1++ * value) + (*in2++ * (256 - value))) >> 8; if (!(i & 1) && !(j & 1)) { *outu++ = ((*in1u++ * value) + (*in2u++ * (256 - value))) >> 8; *outv++ = ((*in1v++ * value) + (*in2v++ * (256 - value))) >> 8; } } } } static GstFlowReturn gst_smpte_collected (GstCollectPads * pads, GstSMPTE * smpte) { GstBuffer *outbuf; GstClockTime ts; GstBuffer *in1 = NULL, *in2 = NULL; GSList *collected; if (G_UNLIKELY (smpte->fps_num == 0)) goto not_negotiated; if (!GST_PAD_CAPS (smpte->sinkpad1) || !GST_PAD_CAPS (smpte->sinkpad2)) goto not_negotiated; ts = gst_util_uint64_scale_int (smpte->position * GST_SECOND, smpte->fps_denom, smpte->fps_num); for (collected = pads->data; collected; collected = g_slist_next (collected)) { GstCollectData *data; data = (GstCollectData *) collected->data; if (data->pad == smpte->sinkpad1) in1 = gst_collect_pads_pop (pads, data); else if (data->pad == smpte->sinkpad2) in2 = gst_collect_pads_pop (pads, data); } if (in1 == NULL) { /* if no input, make picture black */ in1 = gst_buffer_new_and_alloc (I420_SIZE (smpte->width, smpte->height)); fill_i420 (GST_BUFFER_DATA (in1), smpte->width, smpte->height, 7); } if (in2 == NULL) { /* if no input, make picture white */ in2 = gst_buffer_new_and_alloc (I420_SIZE (smpte->width, smpte->height)); fill_i420 (GST_BUFFER_DATA (in2), smpte->width, smpte->height, 0); } if (GST_BUFFER_SIZE (in1) != GST_BUFFER_SIZE (in2)) goto input_formats_do_not_match; if (smpte->position < smpte->end_position) { outbuf = gst_buffer_new_and_alloc (I420_SIZE (smpte->width, smpte->height)); /* set caps if not done yet */ if (!GST_PAD_CAPS (smpte->srcpad)) { GstCaps *caps; caps = gst_caps_copy (gst_static_caps_get (&gst_smpte_src_template.static_caps)); gst_caps_set_simple (caps, "width", G_TYPE_INT, smpte->width, "height", G_TYPE_INT, smpte->height, "framerate", GST_TYPE_FRACTION, smpte->fps_num, smpte->fps_denom, NULL); gst_pad_set_caps (smpte->srcpad, caps); gst_pad_push_event (smpte->srcpad, gst_event_new_new_segment_full (FALSE, 1.0, 1.0, GST_FORMAT_TIME, 0, -1, 0)); } gst_buffer_set_caps (outbuf, GST_PAD_CAPS (smpte->srcpad)); gst_smpte_blend_i420 (GST_BUFFER_DATA (in1), GST_BUFFER_DATA (in2), GST_BUFFER_DATA (outbuf), smpte->mask, smpte->width, smpte->height, smpte->border, ((1 << smpte->depth) + smpte->border) * smpte->position / smpte->end_position); } else { outbuf = in2; gst_buffer_ref (in2); } smpte->position++; if (in1) gst_buffer_unref (in1); if (in2) gst_buffer_unref (in2); GST_BUFFER_TIMESTAMP (outbuf) = ts; return gst_pad_push (smpte->srcpad, outbuf); /* ERRORS */ not_negotiated: { GST_ELEMENT_ERROR (smpte, CORE, NEGOTIATION, (NULL), ("No input format negotiated")); return GST_FLOW_NOT_NEGOTIATED; } input_formats_do_not_match: { GST_ELEMENT_ERROR (smpte, CORE, NEGOTIATION, (NULL), ("input formats don't match: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT, GST_PAD_CAPS (smpte->sinkpad1), GST_PAD_CAPS (smpte->sinkpad2))); return GST_FLOW_ERROR; } } static void gst_smpte_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstSMPTE *smpte; smpte = GST_SMPTE (object); switch (prop_id) { case PROP_TYPE: smpte->type = g_value_get_enum (value); break; case PROP_BORDER: smpte->border = g_value_get_int (value); break; case PROP_FPS: smpte->fps = g_value_get_float (value); break; case PROP_DEPTH: smpte->depth = g_value_get_int (value); break; case PROP_DURATION: smpte->duration = g_value_get_uint64 (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_smpte_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstSMPTE *smpte; smpte = GST_SMPTE (object); switch (prop_id) { case PROP_TYPE: g_value_set_enum (value, smpte->type); break; case PROP_FPS: g_value_set_float (value, smpte->fps); break; case PROP_BORDER: g_value_set_int (value, smpte->border); break; case PROP_DEPTH: g_value_set_int (value, smpte->depth); break; case PROP_DURATION: g_value_set_uint64 (value, smpte->duration); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstStateChangeReturn gst_smpte_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret; GstSMPTE *smpte; smpte = GST_SMPTE (element); switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: gst_smpte_reset (smpte); GST_LOG_OBJECT (smpte, "starting collectpads"); gst_collect_pads_start (smpte->collect); break; case GST_STATE_CHANGE_PAUSED_TO_READY: GST_LOG_OBJECT (smpte, "stopping collectpads"); gst_collect_pads_stop (smpte->collect); break; default: break; } ret = parent_class->change_state (element, transition); switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: gst_smpte_reset (smpte); break; default: break; } return ret; } gboolean gst_smpte_plugin_init (GstPlugin * plugin) { GST_DEBUG_CATEGORY_INIT (gst_smpte_debug, "smpte", 0, "SMPTE transition effect"); return gst_element_register (plugin, "smpte", GST_RANK_NONE, GST_TYPE_SMPTE); }