gstreamer/gst/shapewipe/gstshapewipe.c
2012-11-04 00:07:18 +00:00

1156 lines
33 KiB
C

/* GStreamer
* Copyright (C) 2009,2010 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-shapewipe
*
* The shapewipe element provides custom transitions on video streams
* based on a grayscale bitmap. The state of the transition can be
* controlled by the position property and an optional blended border
* can be added by the border property.
*
* Transition bitmaps can be downloaded from the
* <ulink url="http://cinelerra.org/transitions.php">Cinelerra transition</ulink>
* page.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 -v videotestsrc ! video/x-raw,format=(string)AYUV,width=640,height=480 ! shapewipe position=0.5 name=shape ! videomixer name=mixer ! videoconvert ! autovideosink filesrc location=mask.png ! typefind ! decodebin2 ! videoconvert ! videoscale ! queue ! shape.mask_sink videotestsrc pattern=snow ! video/x-raw,format=(string)AYUV,width=640,height=480 ! queue ! mixer.
* ]| This pipeline adds the transition from mask.png with position 0.5 to an SMPTE test screen and snow.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <gst/gst.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 void gst_shape_wipe_update_qos (GstShapeWipe * self, gdouble proportion,
GstClockTimeDiff diff, GstClockTime time);
static void gst_shape_wipe_reset_qos (GstShapeWipe * self);
static void gst_shape_wipe_read_qos (GstShapeWipe * self, gdouble * proportion,
GstClockTime * time);
static GstStateChangeReturn gst_shape_wipe_change_state (GstElement * element,
GstStateChange transition);
static GstFlowReturn gst_shape_wipe_video_sink_chain (GstPad * pad,
GstObject * parent, GstBuffer * buffer);
static gboolean gst_shape_wipe_video_sink_event (GstPad * pad,
GstObject * parent, GstEvent * event);
static gboolean gst_shape_wipe_video_sink_setcaps (GstShapeWipe * self,
GstCaps * caps);
static GstCaps *gst_shape_wipe_video_sink_getcaps (GstShapeWipe * self,
GstPad * pad, GstCaps * filter);
static gboolean gst_shape_wipe_video_sink_query (GstPad * pad,
GstObject * parent, GstQuery * query);
static GstFlowReturn gst_shape_wipe_mask_sink_chain (GstPad * pad,
GstObject * parent, GstBuffer * buffer);
static gboolean gst_shape_wipe_mask_sink_event (GstPad * pad,
GstObject * parent, GstEvent * event);
static gboolean gst_shape_wipe_mask_sink_setcaps (GstShapeWipe * self,
GstCaps * caps);
static GstCaps *gst_shape_wipe_mask_sink_getcaps (GstShapeWipe * self,
GstPad * pad, GstCaps * filter);
static gboolean gst_shape_wipe_mask_sink_query (GstPad * pad,
GstObject * parent, GstQuery * query);
static gboolean gst_shape_wipe_src_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static GstCaps *gst_shape_wipe_src_getcaps (GstPad * pad, GstCaps * filter);
static gboolean gst_shape_wipe_src_query (GstPad * pad, GstObject * parent,
GstQuery * query);
enum
{
PROP_0,
PROP_POSITION,
PROP_BORDER
};
#define DEFAULT_POSITION 0.0
#define DEFAULT_BORDER 0.0
static GstStaticPadTemplate video_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("video_sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ AYUV, ARGB, BGRA, ABGR, RGBA }")));
static GstStaticPadTemplate mask_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("mask_sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw, "
"format = (string) GRAY8, "
"width = " GST_VIDEO_SIZE_RANGE ", "
"height = " GST_VIDEO_SIZE_RANGE ", " "framerate = 0/1 ; "
"video/x-raw, " "format = (string) " GST_VIDEO_NE (GRAY16) ", "
"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_MAKE ("{ AYUV, ARGB, BGRA, ABGR, RGBA }")));
GST_DEBUG_CATEGORY_STATIC (gst_shape_wipe_debug);
#define GST_CAT_DEFAULT gst_shape_wipe_debug
#define gst_shape_wipe_parent_class parent_class
G_DEFINE_TYPE (GstShapeWipe, gst_shape_wipe, GST_TYPE_ELEMENT);
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, DEFAULT_POSITION,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, PROP_BORDER,
g_param_spec_float ("border", "Border", "Border of the mask",
0.0, 1.0, DEFAULT_BORDER,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_shape_wipe_change_state);
gst_element_class_set_static_metadata (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_init (GstShapeWipe * self)
{
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_query_function (self->video_sinkpad,
GST_DEBUG_FUNCPTR (gst_shape_wipe_video_sink_query));
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_query_function (self->mask_sinkpad,
GST_DEBUG_FUNCPTR (gst_shape_wipe_mask_sink_query));
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_query_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_shape_wipe_src_query));
gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
g_mutex_init (&self->mask_mutex);
g_cond_init (&self->mask_cond);
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;
case PROP_BORDER:
g_value_set_float (value, self->mask_border);
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:{
gfloat f = g_value_get_float (value);
GST_LOG_OBJECT (self, "Setting mask position: %f", f);
self->mask_position = f;
break;
}
case PROP_BORDER:{
gfloat f = g_value_get_float (value);
GST_LOG_OBJECT (self, "Setting mask border: %f", f);
self->mask_border = f;
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);
g_cond_clear (&self->mask_cond);
g_mutex_clear (&self->mask_mutex);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_shape_wipe_reset (GstShapeWipe * self)
{
GST_DEBUG_OBJECT (self, "Resetting internal state");
if (self->mask)
gst_buffer_unref (self->mask);
self->mask = NULL;
g_mutex_lock (&self->mask_mutex);
g_cond_signal (&self->mask_cond);
g_mutex_unlock (&self->mask_mutex);
gst_video_info_init (&self->vinfo);
gst_video_info_init (&self->minfo);
self->mask_bpp = 0;
gst_segment_init (&self->segment, GST_FORMAT_TIME);
gst_shape_wipe_reset_qos (self);
self->frame_duration = 0;
}
static gboolean
gst_shape_wipe_video_sink_setcaps (GstShapeWipe * self, GstCaps * caps)
{
gboolean ret = TRUE;
GstVideoInfo info;
GST_DEBUG_OBJECT (self, "Setting caps: %" GST_PTR_FORMAT, caps);
if (!gst_video_info_from_caps (&info, caps))
goto invalid_caps;
if ((self->vinfo.width != info.width || self->vinfo.height != info.height) &&
self->vinfo.width > 0 && self->vinfo.height > 0) {
g_mutex_lock (&self->mask_mutex);
if (self->mask)
gst_buffer_unref (self->mask);
self->mask = NULL;
g_mutex_unlock (&self->mask_mutex);
}
if (info.fps_n != 0)
self->frame_duration =
gst_util_uint64_scale (GST_SECOND, info.fps_d, info.fps_n);
else
self->frame_duration = 0;
self->vinfo = info;
ret = gst_pad_set_caps (self->srcpad, caps);
return ret;
/* ERRORS */
invalid_caps:
{
GST_ERROR_OBJECT (self, "Invalid caps");
return FALSE;
}
}
static GstCaps *
gst_shape_wipe_video_sink_getcaps (GstShapeWipe * self, GstPad * pad,
GstCaps * filter)
{
GstCaps *templ, *ret, *tmp;
if (gst_pad_has_current_caps (pad))
return gst_pad_get_current_caps (pad);
templ = gst_pad_get_pad_template_caps (pad);
tmp = gst_pad_peer_query_caps (self->srcpad, NULL);
if (tmp) {
ret = gst_caps_intersect (tmp, templ);
gst_caps_unref (templ);
gst_caps_unref (tmp);
} else {
ret = templ;
}
GST_LOG_OBJECT (pad, "srcpad accepted caps: %" GST_PTR_FORMAT, ret);
if (gst_caps_is_empty (ret))
goto done;
tmp = gst_pad_peer_query_caps (pad, NULL);
GST_LOG_OBJECT (pad, "peerpad accepted caps: %" GST_PTR_FORMAT, tmp);
if (tmp) {
GstCaps *intersection;
intersection = gst_caps_intersect (tmp, ret);
gst_caps_unref (tmp);
gst_caps_unref (ret);
ret = intersection;
}
GST_LOG_OBJECT (pad, "intersection: %" GST_PTR_FORMAT, tmp);
if (gst_caps_is_empty (ret))
goto done;
if (self->vinfo.height && self->vinfo.width) {
guint i, n;
ret = gst_caps_make_writable (ret);
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->vinfo.width, "height",
G_TYPE_INT, self->vinfo.height, NULL);
}
}
tmp = gst_pad_peer_query_caps (self->mask_sinkpad, NULL);
GST_LOG_OBJECT (pad, "mask accepted caps: %" GST_PTR_FORMAT, tmp);
if (tmp) {
GstCaps *intersection, *tmp2;
guint i, n;
tmp2 = 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;
tmp = gst_caps_make_writable (tmp);
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, "format", "framerate", NULL);
gst_structure_set_name (s, "video/x-raw");
}
intersection = gst_caps_intersect (tmp, ret);
gst_caps_unref (tmp);
gst_caps_unref (ret);
ret = intersection;
}
done:
GST_LOG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
return ret;
}
static gboolean
gst_shape_wipe_mask_sink_setcaps (GstShapeWipe * self, GstCaps * caps)
{
gboolean ret = TRUE;
gint width, height, bpp;
GstVideoInfo info;
GST_DEBUG_OBJECT (self, "Setting caps: %" GST_PTR_FORMAT, caps);
if (!gst_video_info_from_caps (&info, caps)) {
ret = FALSE;
goto done;
}
width = GST_VIDEO_INFO_WIDTH (&info);
height = GST_VIDEO_INFO_HEIGHT (&info);
bpp = GST_VIDEO_INFO_COMP_DEPTH (&info, 0);
if ((self->vinfo.width != width || self->vinfo.height != height) &&
self->vinfo.width > 0 && self->vinfo.height > 0) {
GST_ERROR_OBJECT (self, "Mask caps must have the same width/height "
"as the video caps");
ret = FALSE;
goto done;
}
self->mask_bpp = bpp;
self->minfo = info;
done:
return ret;
}
static GstCaps *
gst_shape_wipe_mask_sink_getcaps (GstShapeWipe * self, GstPad * pad,
GstCaps * filter)
{
GstCaps *ret, *tmp;
guint i, n;
if (gst_pad_has_current_caps (pad))
return gst_pad_get_current_caps (pad);
tmp = gst_pad_peer_query_caps (self->video_sinkpad, NULL);
if (tmp) {
ret =
gst_caps_intersect (tmp,
gst_pad_get_pad_template_caps (self->video_sinkpad));
gst_caps_unref (tmp);
} else {
ret = gst_pad_get_pad_template_caps (self->video_sinkpad);
}
GST_LOG_OBJECT (pad, "video sink accepted caps: %" GST_PTR_FORMAT, ret);
if (gst_caps_is_empty (ret))
goto done;
tmp = gst_pad_peer_query_caps (self->srcpad, NULL);
GST_LOG_OBJECT (pad, "srcpad accepted caps: %" GST_PTR_FORMAT, ret);
if (tmp) {
GstCaps *intersection;
intersection = gst_caps_intersect (ret, tmp);
gst_caps_unref (ret);
gst_caps_unref (tmp);
ret = intersection;
}
GST_LOG_OBJECT (pad, "intersection: %" GST_PTR_FORMAT, ret);
if (gst_caps_is_empty (ret))
goto done;
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");
gst_structure_remove_fields (s, "format", "framerate", NULL);
if (self->vinfo.width && self->vinfo.height)
gst_structure_set (s, "width", G_TYPE_INT, self->vinfo.width, "height",
G_TYPE_INT, self->vinfo.height, NULL);
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, 0, 1, NULL);
t = gst_structure_copy (s);
gst_structure_set (s, "format", G_TYPE_STRING, GST_VIDEO_NE (GRAY16), NULL);
gst_structure_set (t, "format", G_TYPE_STRING, "GRAY8", NULL);
gst_caps_append_structure (tmp, t);
}
gst_caps_append (ret, tmp);
tmp = gst_pad_peer_query_caps (pad, NULL);
GST_LOG_OBJECT (pad, "peer accepted caps: %" GST_PTR_FORMAT, tmp);
if (tmp) {
GstCaps *intersection;
intersection = gst_caps_intersect (tmp, ret);
gst_caps_unref (tmp);
gst_caps_unref (ret);
ret = intersection;
}
done:
GST_LOG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
return ret;
}
static GstCaps *
gst_shape_wipe_src_getcaps (GstPad * pad, GstCaps * filter)
{
GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
GstCaps *templ, *ret, *tmp;
if (gst_pad_has_current_caps (pad))
return gst_pad_get_current_caps (pad);
else if (gst_pad_has_current_caps (self->video_sinkpad))
return gst_pad_get_current_caps (self->video_sinkpad);
templ = gst_pad_get_pad_template_caps (self->video_sinkpad);
tmp = gst_pad_peer_query_caps (self->video_sinkpad, NULL);
if (tmp) {
ret = gst_caps_intersect (tmp, templ);
gst_caps_unref (templ);
gst_caps_unref (tmp);
} else {
ret = templ;
}
GST_LOG_OBJECT (pad, "video sink accepted caps: %" GST_PTR_FORMAT, ret);
if (gst_caps_is_empty (ret))
goto done;
tmp = gst_pad_peer_query_caps (pad, NULL);
GST_LOG_OBJECT (pad, "peer accepted caps: %" GST_PTR_FORMAT, ret);
if (tmp) {
GstCaps *intersection;
intersection = gst_caps_intersect (tmp, ret);
gst_caps_unref (tmp);
gst_caps_unref (ret);
ret = intersection;
}
GST_LOG_OBJECT (pad, "intersection: %" GST_PTR_FORMAT, ret);
if (gst_caps_is_empty (ret))
goto done;
if (self->vinfo.height && self->vinfo.width) {
guint i, n;
ret = gst_caps_make_writable (ret);
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->vinfo.width, "height",
G_TYPE_INT, self->vinfo.height, NULL);
}
}
tmp = gst_pad_peer_query_caps (self->mask_sinkpad, NULL);
GST_LOG_OBJECT (pad, "mask sink accepted caps: %" GST_PTR_FORMAT, ret);
if (tmp) {
GstCaps *intersection, *tmp2;
guint i, n;
tmp2 = gst_pad_get_pad_template_caps (self->mask_sinkpad);
intersection = gst_caps_intersect (tmp, tmp2);
gst_caps_unref (tmp);
gst_caps_unref (tmp2);
tmp = gst_caps_make_writable (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, "format", "framerate", NULL);
gst_structure_set_name (s, "video/x-raw");
}
intersection = gst_caps_intersect (tmp, ret);
gst_caps_unref (tmp);
gst_caps_unref (ret);
ret = intersection;
}
done:
gst_object_unref (self);
GST_LOG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
return ret;
}
static gboolean
gst_shape_wipe_video_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstShapeWipe *self = (GstShapeWipe *) parent;
gboolean ret;
GST_LOG_OBJECT (pad, "Handling query of type '%s'",
gst_query_type_get_name (GST_QUERY_TYPE (query)));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
{
GstCaps *filter, *caps;
gst_query_parse_caps (query, &filter);
caps = gst_shape_wipe_video_sink_getcaps (self, pad, filter);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
ret = TRUE;
break;
}
default:
ret = gst_pad_query_default (pad, parent, query);
break;
}
return ret;
}
static gboolean
gst_shape_wipe_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstShapeWipe *self = GST_SHAPE_WIPE (parent);
gboolean ret;
GST_LOG_OBJECT (pad, "Handling query of type '%s'",
gst_query_type_get_name (GST_QUERY_TYPE (query)));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
{
GstCaps *filter, *caps;
gst_query_parse_caps (query, &filter);
caps = gst_shape_wipe_src_getcaps (pad, filter);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
ret = TRUE;
break;
}
default:
ret = gst_pad_peer_query (self->video_sinkpad, query);
break;
}
return ret;
}
static void
gst_shape_wipe_update_qos (GstShapeWipe * self, gdouble proportion,
GstClockTimeDiff diff, GstClockTime timestamp)
{
GST_OBJECT_LOCK (self);
self->proportion = proportion;
if (G_LIKELY (timestamp != GST_CLOCK_TIME_NONE)) {
if (G_UNLIKELY (diff > 0))
self->earliest_time = timestamp + 2 * diff + self->frame_duration;
else
self->earliest_time = timestamp + diff;
} else {
self->earliest_time = GST_CLOCK_TIME_NONE;
}
GST_OBJECT_UNLOCK (self);
}
static void
gst_shape_wipe_reset_qos (GstShapeWipe * self)
{
gst_shape_wipe_update_qos (self, 0.5, 0, GST_CLOCK_TIME_NONE);
}
static void
gst_shape_wipe_read_qos (GstShapeWipe * self, gdouble * proportion,
GstClockTime * time)
{
GST_OBJECT_LOCK (self);
*proportion = self->proportion;
*time = self->earliest_time;
GST_OBJECT_UNLOCK (self);
}
/* Perform qos calculations before processing the next frame. Returns TRUE if
* the frame should be processed, FALSE if the frame can be dropped entirely */
static gboolean
gst_shape_wipe_do_qos (GstShapeWipe * self, GstClockTime timestamp)
{
GstClockTime qostime, earliest_time;
gdouble proportion;
/* no timestamp, can't do QoS => process frame */
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (timestamp))) {
GST_LOG_OBJECT (self, "invalid timestamp, can't do QoS, process frame");
return TRUE;
}
/* get latest QoS observation values */
gst_shape_wipe_read_qos (self, &proportion, &earliest_time);
/* skip qos if we have no observation (yet) => process frame */
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (earliest_time))) {
GST_LOG_OBJECT (self, "no observation yet, process frame");
return TRUE;
}
/* qos is done on running time */
qostime = gst_segment_to_running_time (&self->segment, GST_FORMAT_TIME,
timestamp);
/* see how our next timestamp relates to the latest qos timestamp */
GST_LOG_OBJECT (self, "qostime %" GST_TIME_FORMAT ", earliest %"
GST_TIME_FORMAT, GST_TIME_ARGS (qostime), GST_TIME_ARGS (earliest_time));
if (qostime != GST_CLOCK_TIME_NONE && qostime <= earliest_time) {
GST_DEBUG_OBJECT (self, "we are late, drop frame");
return FALSE;
}
GST_LOG_OBJECT (self, "process frame");
return TRUE;
}
#define CREATE_ARGB_FUNCTIONS(depth, name, shift, a, r, g, b) \
static void \
gst_shape_wipe_blend_##name##_##depth (GstShapeWipe * self, GstVideoFrame * inframe, \
GstVideoFrame * maskframe, GstVideoFrame * outframe) \
{ \
const guint##depth *mask = (const guint##depth *) GST_VIDEO_FRAME_PLANE_DATA (maskframe, 0); \
const guint8 *input = (const guint8 *) GST_VIDEO_FRAME_PLANE_DATA (inframe, 0); \
guint8 *output = (guint8 *) GST_VIDEO_FRAME_PLANE_DATA (outframe, 0); \
guint i, j; \
gint width = GST_VIDEO_FRAME_WIDTH (inframe); \
gint height = GST_VIDEO_FRAME_HEIGHT (inframe); \
guint mask_increment = ((depth == 16) ? GST_ROUND_UP_2 (width) : \
GST_ROUND_UP_4 (width)) - width; \
gfloat position = self->mask_position; \
gfloat low = position - (self->mask_border / 2.0f); \
gfloat high = position + (self->mask_border / 2.0f); \
guint32 low_i, high_i, round_i; \
\
if (low < 0.0f) { \
high = 0.0f; \
low = 0.0f; \
} \
\
if (high > 1.0f) { \
low = 1.0f; \
high = 1.0f; \
} \
\
low_i = low * 65536; \
high_i = high * 65536; \
round_i = (high_i - low_i) >> 1; \
\
for (i = 0; i < height; i++) { \
for (j = 0; j < width; j++) { \
guint32 in = *mask << shift; \
\
if (in < low_i) { \
output[a] = 0x00; /* A */ \
output[r] = input[r]; /* R */ \
output[g] = input[g]; /* G */ \
output[b] = input[b]; /* B */ \
} else if (in >= high_i) { \
output[a] = input[a]; /* A */ \
output[r] = input[r]; /* R */ \
output[g] = input[g]; /* G */ \
output[b] = input[b]; /* B */ \
} else { \
guint32 val; \
/* Note: This will never overflow or be larger than 255! */ \
val = (((in - low_i) << 16) + round_i) / (high_i - low_i); \
val = (val * input[a] + 32768) >> 16; \
\
output[a] = val; /* A */ \
output[r] = input[r]; /* R */ \
output[g] = input[g]; /* G */ \
output[b] = input[b]; /* B */ \
} \
\
mask++; \
input += 4; \
output += 4; \
} \
mask += mask_increment; \
} \
}
CREATE_ARGB_FUNCTIONS (16, argb, 0, 0, 1, 2, 3);
CREATE_ARGB_FUNCTIONS (8, argb, 8, 0, 1, 2, 3);
CREATE_ARGB_FUNCTIONS (16, bgra, 0, 3, 2, 1, 0);
CREATE_ARGB_FUNCTIONS (8, bgra, 8, 3, 2, 1, 0);
static GstFlowReturn
gst_shape_wipe_video_sink_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer)
{
GstShapeWipe *self = GST_SHAPE_WIPE (parent);
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *mask = NULL, *outbuf = NULL;
GstClockTime timestamp;
gboolean new_outbuf = FALSE;
GstVideoFrame inframe, outframe, maskframe;
if (G_UNLIKELY (GST_VIDEO_INFO_FORMAT (&self->vinfo) ==
GST_VIDEO_FORMAT_UNKNOWN))
goto not_negotiated;
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 (GST_OBJECT (self), timestamp);
GST_LOG_OBJECT (self,
"Blending buffer with timestamp %" GST_TIME_FORMAT " at position %f",
GST_TIME_ARGS (timestamp), self->mask_position);
g_mutex_lock (&self->mask_mutex);
if (self->shutdown)
goto shutdown;
if (!self->mask)
g_cond_wait (&self->mask_cond, &self->mask_mutex);
if (self->mask == NULL || self->shutdown) {
goto shutdown;
} else {
mask = gst_buffer_ref (self->mask);
}
g_mutex_unlock (&self->mask_mutex);
if (!gst_shape_wipe_do_qos (self, GST_BUFFER_TIMESTAMP (buffer)))
goto qos;
/* Try to blend inplace, if it's not possible
* get a new buffer from downstream. */
if (!gst_buffer_is_writable (buffer)) {
outbuf = gst_buffer_new_allocate (NULL, gst_buffer_get_size (buffer), NULL);
gst_buffer_copy_into (outbuf, buffer, GST_BUFFER_COPY_METADATA, 0, -1);
new_outbuf = TRUE;
} else {
outbuf = buffer;
}
gst_video_frame_map (&inframe, &self->vinfo, buffer,
new_outbuf ? GST_MAP_READ : GST_MAP_READWRITE);
gst_video_frame_map (&outframe, &self->vinfo, outbuf,
new_outbuf ? GST_MAP_WRITE : GST_MAP_READWRITE);
gst_video_frame_map (&maskframe, &self->minfo, mask, GST_MAP_READ);
switch (GST_VIDEO_INFO_FORMAT (&self->vinfo)) {
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
if (self->mask_bpp == 16)
gst_shape_wipe_blend_argb_16 (self, &inframe, &maskframe, &outframe);
else
gst_shape_wipe_blend_argb_8 (self, &inframe, &maskframe, &outframe);
break;
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_RGBA:
if (self->mask_bpp == 16)
gst_shape_wipe_blend_bgra_16 (self, &inframe, &maskframe, &outframe);
else
gst_shape_wipe_blend_bgra_8 (self, &inframe, &maskframe, &outframe);
break;
default:
g_assert_not_reached ();
break;
}
gst_video_frame_unmap (&outframe);
gst_video_frame_unmap (&inframe);
gst_video_frame_unmap (&maskframe);
gst_buffer_unref (mask);
if (new_outbuf)
gst_buffer_unref (buffer);
ret = gst_pad_push (self->srcpad, outbuf);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto push_failed;
return ret;
/* Errors */
not_negotiated:
{
GST_ERROR_OBJECT (self, "No valid caps yet");
gst_buffer_unref (buffer);
return GST_FLOW_NOT_NEGOTIATED;
}
shutdown:
{
GST_DEBUG_OBJECT (self, "Shutting down");
gst_buffer_unref (buffer);
return GST_FLOW_FLUSHING;
}
qos:
{
GST_DEBUG_OBJECT (self, "Dropping buffer because of QoS");
gst_buffer_unref (buffer);
gst_buffer_unref (mask);
return GST_FLOW_OK;
}
push_failed:
{
GST_ERROR_OBJECT (self, "Pushing buffer downstream failed: %s",
gst_flow_get_name (ret));
return ret;
}
}
static GstFlowReturn
gst_shape_wipe_mask_sink_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer)
{
GstShapeWipe *self = GST_SHAPE_WIPE (parent);
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);
gst_buffer_unref (buffer);
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:
self->shutdown = FALSE;
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
/* Unblock video sink chain function */
g_mutex_lock (&self->mask_mutex);
self->shutdown = TRUE;
g_cond_signal (&self->mask_cond);
g_mutex_unlock (&self->mask_mutex);
break;
default:
break;
}
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, GstObject * parent,
GstEvent * event)
{
GstShapeWipe *self = GST_SHAPE_WIPE (parent);
gboolean ret;
GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
ret = gst_shape_wipe_video_sink_setcaps (self, caps);
gst_event_unref (event);
break;
}
case GST_EVENT_SEGMENT:
{
GstSegment seg;
gst_event_copy_segment (event, &seg);
if (seg.format == GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (pad,
"Got SEGMENT event in GST_FORMAT_TIME %" GST_PTR_FORMAT, &seg);
self->segment = seg;
} else {
gst_segment_init (&self->segment, GST_FORMAT_TIME);
}
}
/* fall through */
case GST_EVENT_FLUSH_STOP:
gst_shape_wipe_reset_qos (self);
/* fall through */
default:
ret = gst_pad_push_event (self->srcpad, event);
break;
}
return ret;
}
static gboolean
gst_shape_wipe_mask_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstShapeWipe *self = GST_SHAPE_WIPE (parent);
GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
gst_shape_wipe_mask_sink_setcaps (self, caps);
break;
}
case GST_EVENT_FLUSH_STOP:
g_mutex_lock (&self->mask_mutex);
gst_buffer_replace (&self->mask, NULL);
g_mutex_unlock (&self->mask_mutex);
break;
default:
break;
}
/* Dropping all events here */
gst_event_unref (event);
return TRUE;
}
static gboolean
gst_shape_wipe_mask_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstShapeWipe *self = GST_SHAPE_WIPE (parent);
gboolean ret;
GST_LOG_OBJECT (pad, "Handling query of type '%s'",
gst_query_type_get_name (GST_QUERY_TYPE (query)));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
{
GstCaps *filter, *caps;
gst_query_parse_caps (query, &filter);
caps = gst_shape_wipe_mask_sink_getcaps (self, pad, filter);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
ret = TRUE;
break;
}
default:
ret = gst_pad_query_default (pad, parent, query);
break;
}
return ret;
}
static gboolean
gst_shape_wipe_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstShapeWipe *self = GST_SHAPE_WIPE (parent);
gboolean ret;
GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_QOS:{
GstQOSType type;
GstClockTimeDiff diff;
GstClockTime timestamp;
gdouble proportion;
gst_event_parse_qos (event, &type, &proportion, &diff, &timestamp);
gst_shape_wipe_update_qos (self, proportion, diff, timestamp);
}
/* fall through */
default:
ret = gst_pad_push_event (self->video_sinkpad, event);
break;
}
return ret;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_shape_wipe_debug, "shapewipe", 0,
"shapewipe element");
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)