--- /dev/null
+/* GStreamer
+ * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * 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 <string.h>
+
+#include <gst/gst.h>
+#include <gst/controller/gstcontroller.h>
+
+#include "gstshapewipe.h"
+
+static void gst_shape_wipe_finalize (GObject * object);
+static void gst_shape_wipe_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+static void gst_shape_wipe_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+
+static void gst_shape_wipe_reset (GstShapeWipe * self);
+
+static GstStateChangeReturn gst_shape_wipe_change_state (GstElement * element,
+ GstStateChange transition);
+
+static GstFlowReturn gst_shape_wipe_video_sink_chain (GstPad * pad,
+ GstBuffer * buffer);
+static gboolean gst_shape_wipe_video_sink_event (GstPad * pad,
+ GstEvent * event);
+static gboolean gst_shape_wipe_video_sink_setcaps (GstPad * pad,
+ GstCaps * caps);
+static GstCaps *gst_shape_wipe_video_sink_getcaps (GstPad * pad);
+static GstFlowReturn gst_shape_wipe_mask_sink_chain (GstPad * pad,
+ GstBuffer * buffer);
+static gboolean gst_shape_wipe_mask_sink_event (GstPad * pad, GstEvent * event);
+static gboolean gst_shape_wipe_mask_sink_setcaps (GstPad * pad, GstCaps * caps);
+static GstCaps *gst_shape_wipe_mask_sink_getcaps (GstPad * pad);
+static gboolean gst_shape_wipe_src_event (GstPad * pad, GstEvent * event);
+static GstCaps *gst_shape_wipe_src_getcaps (GstPad * pad);
+
+enum
+{
+ PROP_0,
+ PROP_POSITION
+};
+
+static GstStaticPadTemplate video_sink_pad_template =
+GST_STATIC_PAD_TEMPLATE ("video_sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV")));
+
+static GstStaticPadTemplate mask_sink_pad_template =
+ GST_STATIC_PAD_TEMPLATE ("mask_sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/x-raw-gray, "
+ "bpp = 8, "
+ "depth = 8, "
+ "width = " GST_VIDEO_SIZE_RANGE ", "
+ "height = " GST_VIDEO_SIZE_RANGE ", " "framerate = 0/1 ; "
+ "video/x-raw-gray, " "bpp = 16, " "depth = 16, "
+ "endianness = BYTE_ORDER, " "width = " GST_VIDEO_SIZE_RANGE ", "
+ "height = " GST_VIDEO_SIZE_RANGE ", " "framerate = 0/1"));
+
+static GstStaticPadTemplate src_pad_template =
+GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV")));
+
+GST_DEBUG_CATEGORY_STATIC (gst_shape_wipe_debug);
+#define GST_CAT_DEFAULT gst_shape_wipe_debug
+
+GST_BOILERPLATE (GstShapeWipe, gst_shape_wipe, GstElement, GST_TYPE_ELEMENT);
+
+static void
+gst_shape_wipe_base_init (gpointer g_class)
+{
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_set_details_simple (gstelement_class,
+ "Shape Wipe transition filter",
+ "Filter/Editor/Video",
+ "Adds a shape wipe transition to a video stream",
+ "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&video_sink_pad_template));
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&mask_sink_pad_template));
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&src_pad_template));
+}
+
+static void
+gst_shape_wipe_class_init (GstShapeWipeClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->finalize = gst_shape_wipe_finalize;
+ gobject_class->set_property = gst_shape_wipe_set_property;
+ gobject_class->get_property = gst_shape_wipe_get_property;
+
+ g_object_class_install_property (gobject_class, PROP_POSITION,
+ g_param_spec_float ("position", "Position", "Position of the mask",
+ 0.0, 1.0, 0.0,
+ G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
+
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_change_state);
+}
+
+static void
+gst_shape_wipe_init (GstShapeWipe * self, GstShapeWipeClass * g_class)
+{
+ self->video_sinkpad =
+ gst_pad_new_from_static_template (&video_sink_pad_template, "video_sink");
+ gst_pad_set_chain_function (self->video_sinkpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_video_sink_chain));
+ gst_pad_set_event_function (self->video_sinkpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_video_sink_event));
+ gst_pad_set_setcaps_function (self->video_sinkpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_video_sink_setcaps));
+ gst_pad_set_getcaps_function (self->video_sinkpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_video_sink_getcaps));
+ gst_element_add_pad (GST_ELEMENT (self), self->video_sinkpad);
+
+ self->mask_sinkpad =
+ gst_pad_new_from_static_template (&mask_sink_pad_template, "mask_sink");
+ gst_pad_set_chain_function (self->mask_sinkpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_mask_sink_chain));
+ gst_pad_set_event_function (self->mask_sinkpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_mask_sink_event));
+ gst_pad_set_setcaps_function (self->mask_sinkpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_mask_sink_setcaps));
+ gst_pad_set_getcaps_function (self->mask_sinkpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_mask_sink_getcaps));
+ gst_element_add_pad (GST_ELEMENT (self), self->mask_sinkpad);
+
+ self->srcpad = gst_pad_new_from_static_template (&src_pad_template, "src");
+ gst_pad_set_event_function (self->srcpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_src_event));
+ gst_pad_set_getcaps_function (self->srcpad,
+ GST_DEBUG_FUNCPTR (gst_shape_wipe_src_getcaps));
+ gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
+
+ self->mask_mutex = g_mutex_new ();
+ self->mask_cond = g_cond_new ();
+
+ gst_shape_wipe_reset (self);
+}
+
+static void
+gst_shape_wipe_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (object);
+
+ switch (prop_id) {
+ case PROP_POSITION:
+ g_value_set_float (value, self->mask_position);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_shape_wipe_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (object);
+
+ switch (prop_id) {
+ case PROP_POSITION:
+ self->mask_position = g_value_get_float (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_shape_wipe_finalize (GObject * object)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (object);
+
+ gst_shape_wipe_reset (self);
+
+ if (self->mask_cond)
+ g_cond_free (self->mask_cond);
+ self->mask_cond = NULL;
+
+ if (self->mask_mutex)
+ g_mutex_free (self->mask_mutex);
+ self->mask_mutex = NULL;
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_shape_wipe_reset (GstShapeWipe * self)
+{
+ if (self->mask)
+ gst_buffer_unref (self->mask);
+ self->mask = NULL;
+
+ g_cond_signal (self->mask_cond);
+
+ self->width = self->height = 0;
+ self->mask_position = 0.0;
+ self->mask_bpp = 0;
+
+ gst_segment_init (&self->segment, GST_FORMAT_TIME);
+}
+
+static gboolean
+gst_shape_wipe_video_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
+ gboolean ret = TRUE;
+ GstStructure *s;
+ gint width, height;
+
+ GST_DEBUG_OBJECT (pad, "Setting caps: %" GST_PTR_FORMAT, caps);
+
+ s = gst_caps_get_structure (caps, 0);
+
+ if (!gst_structure_get_int (s, "width", &width) ||
+ !gst_structure_get_int (s, "height", &height)) {
+ ret = FALSE;
+ goto done;
+ }
+
+ if (self->width != width || self->height != height) {
+ g_mutex_lock (self->mask_mutex);
+ self->width = width;
+ self->height = height;
+
+ if (self->mask)
+ gst_buffer_unref (self->mask);
+ self->mask = NULL;
+ g_mutex_unlock (self->mask_mutex);
+ }
+
+ ret = gst_pad_set_caps (self->srcpad, caps);
+
+done:
+ gst_object_unref (self);
+
+ return ret;
+}
+
+static GstCaps *
+gst_shape_wipe_video_sink_getcaps (GstPad * pad)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
+ GstCaps *ret, *tmp;
+
+ if (GST_PAD_CAPS (pad))
+ return gst_caps_copy (GST_PAD_CAPS (pad));
+
+ tmp = gst_pad_peer_get_caps (self->srcpad);
+ if (tmp) {
+ ret = gst_caps_intersect (tmp, gst_pad_get_pad_template_caps (pad));
+ gst_caps_unref (tmp);
+ } else {
+ ret = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
+ }
+
+ tmp = gst_pad_peer_get_caps (pad);
+ if (tmp) {
+ GstCaps *intersection;
+
+ intersection = gst_caps_intersect (tmp, ret);
+ gst_caps_unref (tmp);
+ gst_caps_unref (ret);
+ ret = intersection;
+ }
+
+ if (self->height && self->width) {
+ guint i, n;
+
+ n = gst_caps_get_size (ret);
+ for (i = 0; i < n; i++) {
+ GstStructure *s = gst_caps_get_structure (ret, i);
+
+ gst_structure_set (s, "width", G_TYPE_INT, self->width, "height",
+ G_TYPE_INT, self->height, NULL);
+ }
+ }
+
+ tmp = gst_pad_peer_get_caps (self->mask_sinkpad);
+ if (tmp) {
+ GstCaps *intersection, *tmp2;
+ guint i, n;
+
+ tmp = gst_caps_make_writable (tmp);
+
+ tmp2 = gst_caps_copy (gst_pad_get_pad_template_caps (self->mask_sinkpad));
+
+ intersection = gst_caps_intersect (tmp, tmp2);
+ gst_caps_unref (tmp);
+ gst_caps_unref (tmp2);
+ tmp = intersection;
+
+ n = gst_caps_get_size (tmp);
+
+ for (i = 0; i < n; i++) {
+ GstStructure *s = gst_caps_get_structure (tmp, i);
+
+ gst_structure_remove_fields (s, "bpp", "depth", "endianness", "framerate",
+ NULL);
+ gst_structure_set_name (s, "video/x-raw-yuv");
+ }
+
+ intersection = gst_caps_intersect (tmp, ret);
+ gst_caps_unref (tmp);
+ gst_caps_unref (ret);
+ ret = intersection;
+ }
+
+ gst_object_unref (self);
+
+ GST_DEBUG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
+
+ return ret;
+}
+
+static gboolean
+gst_shape_wipe_mask_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
+ gboolean ret = TRUE;
+ GstStructure *s;
+ gint width, height, bpp;
+
+ GST_DEBUG_OBJECT (pad, "Setting caps: %" GST_PTR_FORMAT, caps);
+
+ s = gst_caps_get_structure (caps, 0);
+
+ if (!gst_structure_get_int (s, "width", &width) ||
+ !gst_structure_get_int (s, "height", &height) ||
+ !gst_structure_get_int (s, "bpp", &bpp)) {
+ ret = FALSE;
+ goto done;
+ }
+
+ if ((self->width != width || self->height != height) &&
+ self->width > 0 && self->height > 0) {
+ GST_ERROR_OBJECT (pad, "Mask caps must have the same width/height "
+ "as the video caps");
+ ret = FALSE;
+ goto done;
+ } else {
+ self->width = width;
+ self->height = height;
+ }
+
+ self->mask_bpp = bpp;
+
+done:
+ gst_object_unref (self);
+
+ return ret;
+}
+
+static GstCaps *
+gst_shape_wipe_mask_sink_getcaps (GstPad * pad)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
+ GstCaps *ret, *tmp;
+ guint i, n;
+
+ if (GST_PAD_CAPS (pad))
+ return gst_caps_copy (GST_PAD_CAPS (pad));
+
+ tmp = gst_pad_peer_get_caps (self->video_sinkpad);
+ if (tmp) {
+ ret =
+ gst_caps_intersect (tmp,
+ gst_pad_get_pad_template_caps (self->video_sinkpad));
+ gst_caps_unref (tmp);
+ } else {
+ ret = gst_caps_copy (gst_pad_get_pad_template_caps (self->video_sinkpad));
+ }
+
+ tmp = gst_pad_peer_get_caps (self->srcpad);
+ if (tmp) {
+ GstCaps *intersection;
+
+ intersection = gst_caps_intersect (ret, tmp);
+ gst_caps_unref (ret);
+ gst_caps_unref (tmp);
+ ret = intersection;
+ }
+
+ n = gst_caps_get_size (ret);
+ tmp = gst_caps_new_empty ();
+ for (i = 0; i < n; i++) {
+ GstStructure *s = gst_caps_get_structure (ret, i);
+ GstStructure *t;
+
+ gst_structure_set_name (s, "video/x-raw-gray");
+ gst_structure_remove_fields (s, "format", "framerate", NULL);
+
+ if (self->width && self->height)
+ gst_structure_set (s, "width", G_TYPE_INT, self->width, "height",
+ G_TYPE_INT, self->height, NULL);
+
+ gst_structure_set (s, "framerate", GST_TYPE_FRACTION, 0, 1, NULL);
+
+ t = gst_structure_copy (s);
+
+ gst_structure_set (s, "bpp", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
+ "endianness", G_TYPE_INT, G_BYTE_ORDER, NULL);
+ gst_structure_set (t, "bpp", G_TYPE_INT, 8, "depth", G_TYPE_INT, 8, NULL);
+
+ gst_caps_append_structure (tmp, t);
+ }
+ gst_caps_merge (ret, tmp);
+
+ tmp = gst_pad_peer_get_caps (pad);
+ if (tmp) {
+ GstCaps *intersection;
+
+ intersection = gst_caps_intersect (tmp, ret);
+ gst_caps_unref (tmp);
+ gst_caps_unref (ret);
+ ret = intersection;
+ }
+
+ gst_object_unref (self);
+
+ GST_DEBUG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
+
+ return ret;
+}
+
+static GstCaps *
+gst_shape_wipe_src_getcaps (GstPad * pad)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
+ GstCaps *ret, *tmp;
+
+ if (GST_PAD_CAPS (pad))
+ return gst_caps_copy (GST_PAD_CAPS (pad));
+ else if (GST_PAD_CAPS (self->video_sinkpad))
+ return gst_caps_copy (GST_PAD_CAPS (self->video_sinkpad));
+
+ tmp = gst_pad_peer_get_caps (self->video_sinkpad);
+ if (tmp) {
+ ret =
+ gst_caps_intersect (tmp,
+ gst_pad_get_pad_template_caps (self->video_sinkpad));
+ gst_caps_unref (tmp);
+ } else {
+ ret = gst_caps_copy (gst_pad_get_pad_template_caps (self->video_sinkpad));
+ }
+
+ tmp = gst_pad_peer_get_caps (pad);
+ if (tmp) {
+ GstCaps *intersection;
+
+ intersection = gst_caps_intersect (tmp, ret);
+ gst_caps_unref (tmp);
+ gst_caps_unref (ret);
+ ret = intersection;
+ }
+
+ if (self->height && self->width) {
+ guint i, n;
+
+ n = gst_caps_get_size (ret);
+ for (i = 0; i < n; i++) {
+ GstStructure *s = gst_caps_get_structure (ret, i);
+
+ gst_structure_set (s, "width", G_TYPE_INT, self->width, "height",
+ G_TYPE_INT, self->height, NULL);
+ }
+ }
+
+ tmp = gst_pad_peer_get_caps (self->mask_sinkpad);
+ if (tmp) {
+ GstCaps *intersection, *tmp2;
+ guint i, n;
+
+ tmp = gst_caps_make_writable (tmp);
+ tmp2 = gst_caps_copy (gst_pad_get_pad_template_caps (self->mask_sinkpad));
+
+ intersection = gst_caps_intersect (tmp, tmp2);
+ gst_caps_unref (tmp);
+ gst_caps_unref (tmp2);
+
+ tmp = intersection;
+ n = gst_caps_get_size (tmp);
+
+ for (i = 0; i < n; i++) {
+ GstStructure *s = gst_caps_get_structure (tmp, i);
+
+ gst_structure_remove_fields (s, "bpp", "depth", "endianness", "framerate",
+ NULL);
+ gst_structure_set_name (s, "video/x-raw-yuv");
+ }
+
+ intersection = gst_caps_intersect (tmp, ret);
+ gst_caps_unref (tmp);
+ gst_caps_unref (ret);
+ ret = intersection;
+ }
+
+ gst_object_unref (self);
+
+ GST_DEBUG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
+
+ return ret;
+}
+
+static GstFlowReturn
+gst_shape_wipe_blend_16 (GstShapeWipe * self, GstBuffer * inbuf,
+ GstBuffer * maskbuf, GstBuffer * outbuf)
+{
+ const guint16 *mask = (const guint16 *) GST_BUFFER_DATA (maskbuf);
+ const guint8 *input = (const guint8 *) GST_BUFFER_DATA (inbuf);
+ guint8 *output = (guint8 *) GST_BUFFER_DATA (outbuf);
+ guint i, j;
+ guint mask_increment = GST_ROUND_UP_2 (self->width) - self->width;
+ gfloat position = self->mask_position;
+
+ for (i = 0; i < self->height; i++) {
+ for (j = 0; j < self->width; j++) {
+ if (*mask / 65535.0 < position) {
+ output[0] = 0x00; /* A */
+ output[1] = 0x00; /* Y */
+ output[2] = 0x80; /* U */
+ output[3] = 0x80; /* V */
+ } else {
+ output[0] = 0xff; /* A */
+ output[1] = input[1]; /* Y */
+ output[2] = input[2]; /* U */
+ output[3] = input[3]; /* V */
+ }
+
+ mask++;
+ input += 4;
+ output += 4;
+ }
+ mask += mask_increment;
+ }
+
+ return GST_FLOW_OK;
+}
+
+static GstFlowReturn
+gst_shape_wipe_blend_8 (GstShapeWipe * self, GstBuffer * inbuf,
+ GstBuffer * maskbuf, GstBuffer * outbuf)
+{
+ const guint8 *mask = (const guint8 *) GST_BUFFER_DATA (maskbuf);
+ const guint8 *input = (const guint8 *) GST_BUFFER_DATA (inbuf);
+ guint8 *output = (guint8 *) GST_BUFFER_DATA (outbuf);
+ guint i, j;
+ guint mask_increment = GST_ROUND_UP_4 (self->width) - self->width;
+ gfloat position = self->mask_position;
+
+ for (i = 0; i < self->height; i++) {
+ for (j = 0; j < self->width; j++) {
+ if (*mask / 255.0 < position) {
+ output[0] = 0x00; /* A */
+ output[1] = 0x00; /* Y */
+ output[2] = 0x80; /* U */
+ output[3] = 0x80; /* V */
+ } else {
+ output[0] = 0xff; /* A */
+ output[1] = input[1]; /* Y */
+ output[2] = input[2]; /* U */
+ output[3] = input[3]; /* V */
+ }
+
+ mask++;
+ input += 4;
+ output += 4;
+ }
+ mask += mask_increment;
+ }
+
+ return GST_FLOW_OK;
+}
+
+static GstFlowReturn
+gst_shape_wipe_video_sink_chain (GstPad * pad, GstBuffer * buffer)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (GST_PAD_PARENT (pad));
+ GstFlowReturn ret = GST_FLOW_OK;
+ GstBuffer *mask = NULL, *outbuf = NULL;
+ GstClockTime timestamp;
+
+ timestamp = GST_BUFFER_TIMESTAMP (buffer);
+ timestamp =
+ gst_segment_to_stream_time (&self->segment, GST_FORMAT_TIME, timestamp);
+
+ if (GST_CLOCK_TIME_IS_VALID (timestamp))
+ gst_object_sync_values (G_OBJECT (self), timestamp);
+
+ GST_DEBUG_OBJECT (self,
+ "Blending buffer with timestamp %" GST_TIME_FORMAT " at position %lf",
+ GST_TIME_ARGS (timestamp), self->mask_position);
+
+ g_mutex_lock (self->mask_mutex);
+ mask = self->mask;
+ if (self->mask)
+ gst_buffer_ref (self->mask);
+ else
+ g_cond_wait (self->mask_cond, self->mask_mutex);
+
+ if (self->mask == NULL) {
+ g_mutex_unlock (self->mask_mutex);
+ return GST_FLOW_UNEXPECTED;
+ }
+
+ mask = gst_buffer_ref (self->mask);
+
+ g_mutex_unlock (self->mask_mutex);
+
+ ret =
+ gst_pad_alloc_buffer_and_set_caps (self->srcpad, GST_BUFFER_OFFSET_NONE,
+ GST_BUFFER_SIZE (buffer), GST_PAD_CAPS (self->srcpad), &outbuf);
+ if (G_UNLIKELY (ret != GST_FLOW_OK))
+ return ret;
+
+ if (self->mask_bpp == 16)
+ ret = gst_shape_wipe_blend_16 (self, buffer, mask, outbuf);
+ else
+ ret = gst_shape_wipe_blend_8 (self, buffer, mask, outbuf);
+
+ gst_buffer_unref (mask);
+ gst_buffer_unref (buffer);
+ if (ret != GST_FLOW_OK) {
+ gst_buffer_unref (outbuf);
+ return ret;
+ }
+
+ ret = gst_pad_push (self->srcpad, outbuf);
+ return ret;
+}
+
+static GstFlowReturn
+gst_shape_wipe_mask_sink_chain (GstPad * pad, GstBuffer * buffer)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (GST_PAD_PARENT (pad));
+ GstFlowReturn ret = GST_FLOW_OK;
+
+ g_mutex_lock (self->mask_mutex);
+ GST_DEBUG_OBJECT (self, "Setting new mask buffer: %" GST_PTR_FORMAT, buffer);
+
+ gst_buffer_replace (&self->mask, buffer);
+ g_cond_signal (self->mask_cond);
+ g_mutex_unlock (self->mask_mutex);
+
+ return ret;
+}
+
+static GstStateChangeReturn
+gst_shape_wipe_change_state (GstElement * element, GstStateChange transition)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (element);
+ GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ default:
+ break;
+ }
+
+ /* Unblock video sink chain function */
+ if (transition == GST_STATE_CHANGE_PAUSED_TO_READY)
+ g_cond_signal (self->mask_cond);
+
+ if (GST_ELEMENT_CLASS (parent_class)->change_state)
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ gst_shape_wipe_reset (self);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static gboolean
+gst_shape_wipe_video_sink_event (GstPad * pad, GstEvent * event)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
+ gboolean ret;
+
+ GST_DEBUG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_NEWSEGMENT:{
+ GstFormat fmt;
+ gboolean is_update;
+ gint64 start, end, base;
+ gdouble rate;
+
+ gst_event_parse_new_segment (event, &is_update, &rate, &fmt, &start,
+ &end, &base);
+ if (fmt == GST_FORMAT_TIME) {
+ GST_DEBUG_OBJECT (pad,
+ "Got NEWSEGMENT event in GST_FORMAT_TIME, passing on (%"
+ GST_TIME_FORMAT " - %" GST_TIME_FORMAT ")", GST_TIME_ARGS (start),
+ GST_TIME_ARGS (end));
+ gst_segment_set_newsegment (&self->segment, is_update, rate, fmt, start,
+ end, base);
+ } else {
+ gst_segment_init (&self->segment, GST_FORMAT_TIME);
+ }
+ }
+ /* fall through */
+ default:
+ ret = gst_pad_push_event (self->srcpad, event);
+ break;
+ }
+
+ gst_object_unref (self);
+ return ret;
+}
+
+static gboolean
+gst_shape_wipe_mask_sink_event (GstPad * pad, GstEvent * event)
+{
+ GST_DEBUG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
+
+ /* Dropping all events here */
+ gst_event_unref (event);
+ return TRUE;
+}
+
+static gboolean
+gst_shape_wipe_src_event (GstPad * pad, GstEvent * event)
+{
+ GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
+ gboolean ret;
+
+ switch (GST_EVENT_TYPE (event)) {
+ default:
+ ret = gst_pad_push_event (self->video_sinkpad, event);
+ break;
+ }
+
+ gst_object_unref (self);
+ return ret;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ GST_DEBUG_CATEGORY_INIT (gst_shape_wipe_debug, "shapewipe", 0,
+ "shapewipe element");
+
+ gst_controller_init (NULL, NULL);
+
+ if (!gst_element_register (plugin, "shapewipe", GST_RANK_NONE,
+ GST_TYPE_SHAPE_WIPE))
+ return FALSE;
+
+ return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "shapewipe",
+ "Shape Wipe transition filter",
+ plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
projects / platform / upstream / gstreamer.git / commitdiff