mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 13:41:48 +00:00
482 lines
14 KiB
C
482 lines
14 KiB
C
/* GStreamer
|
|
* Copyright (C) 2013 Mathieu Duponchelle <mduponchelle1@gmail.com>
|
|
*
|
|
* 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 Street, Suite 500,
|
|
* Boston, MA 02110-1335, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/video/video.h>
|
|
|
|
#include "gstframepositionner.h"
|
|
|
|
/* We need to define a max number of pixel so we can interpolate them */
|
|
#define MAX_PIXELS 100000
|
|
#define MIN_PIXELS -100000
|
|
|
|
static void gst_frame_positionner_set_property (GObject * object,
|
|
guint property_id, const GValue * value, GParamSpec * pspec);
|
|
static void gst_frame_positionner_get_property (GObject * object,
|
|
guint property_id, GValue * value, GParamSpec * pspec);
|
|
static GstFlowReturn gst_frame_positionner_transform_ip (GstBaseTransform *
|
|
trans, GstBuffer * buf);
|
|
|
|
static gboolean
|
|
gst_frame_positionner_meta_transform (GstBuffer * dest, GstMeta * meta,
|
|
GstBuffer * buffer, GQuark type, gpointer data);
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_ALPHA,
|
|
PROP_POSX,
|
|
PROP_POSY,
|
|
PROP_ZORDER,
|
|
PROP_WIDTH,
|
|
PROP_HEIGHT
|
|
};
|
|
|
|
static GstStaticPadTemplate gst_frame_positionner_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("video/x-raw")
|
|
);
|
|
|
|
static GstStaticPadTemplate gst_frame_positionner_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("video/x-raw")
|
|
);
|
|
|
|
G_DEFINE_TYPE (GstFramePositionner, gst_frame_positionner,
|
|
GST_TYPE_BASE_TRANSFORM);
|
|
|
|
static void
|
|
_weak_notify_cb (GstFramePositionner * pos, GObject * old)
|
|
{
|
|
pos->current_track = NULL;
|
|
}
|
|
|
|
static void
|
|
gst_frame_positionner_update_properties (GstFramePositionner * pos)
|
|
{
|
|
GstCaps *caps;
|
|
gint final_width;
|
|
gint final_height;
|
|
|
|
if (pos->capsfilter == NULL)
|
|
return;
|
|
|
|
final_width = (pos->width > 0) ? pos->width : pos->track_width;
|
|
final_height = (pos->height > 0) ? pos->height : pos->track_height;
|
|
|
|
if (final_width == 0 && final_height == 0)
|
|
caps = gst_caps_new_empty_simple ("video/x-raw");
|
|
else if (final_width == 0)
|
|
caps =
|
|
gst_caps_new_simple ("video/x-raw", "height", G_TYPE_INT, final_height,
|
|
NULL);
|
|
else if (final_height == 0)
|
|
caps =
|
|
gst_caps_new_simple ("video/x-raw", "width", G_TYPE_INT, final_width,
|
|
NULL);
|
|
else
|
|
caps =
|
|
gst_caps_new_simple ("video/x-raw", "width", G_TYPE_INT,
|
|
final_width, "height", G_TYPE_INT, final_height, NULL);
|
|
|
|
GST_DEBUG_OBJECT (pos, "updated size to : %d %d", final_width, final_height);
|
|
|
|
if (pos->fps_n != -1)
|
|
gst_caps_set_simple (caps, "framerate", GST_TYPE_FRACTION, pos->fps_n,
|
|
pos->fps_d, NULL);
|
|
|
|
GST_DEBUG_OBJECT (pos, "setting caps : %s", gst_caps_to_string (caps));
|
|
|
|
g_object_set (pos->capsfilter, "caps", caps, NULL);
|
|
|
|
g_object_notify (G_OBJECT (pos), "width");
|
|
g_object_notify (G_OBJECT (pos), "height");
|
|
gst_caps_unref (caps);
|
|
}
|
|
|
|
static void
|
|
sync_properties_from_caps (GstFramePositionner * pos, GstCaps * caps)
|
|
{
|
|
gint width, height;
|
|
|
|
width = height = 0;
|
|
|
|
if (caps && gst_caps_get_size (caps) > 0) {
|
|
GstStructure *structure;
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
if (!gst_structure_get_int (structure, "width", &width))
|
|
width = 0;
|
|
if (!gst_structure_get_int (structure, "height", &height))
|
|
height = 0;
|
|
if (!gst_structure_get_fraction (structure, "framerate", &(pos->fps_n),
|
|
&(pos->fps_d)))
|
|
pos->fps_n = -1;
|
|
}
|
|
|
|
pos->track_width = width;
|
|
pos->track_height = height;
|
|
|
|
GST_DEBUG_OBJECT (pos, "syncing size from caps : %d %d", width, height);
|
|
GST_DEBUG_OBJECT (pos, "syncing framerate from caps : %d/%d", pos->fps_n,
|
|
pos->fps_d);
|
|
|
|
gst_frame_positionner_update_properties (pos);
|
|
}
|
|
|
|
static void
|
|
sync_properties_with_track (GstFramePositionner * pos, GESTrack * track)
|
|
{
|
|
GstCaps *caps;
|
|
|
|
g_object_get (track, "restriction-caps", &caps, NULL);
|
|
sync_properties_from_caps (pos, caps);
|
|
}
|
|
|
|
static void
|
|
_track_restriction_changed_cb (GESTrack * track, GParamSpec * arg G_GNUC_UNUSED,
|
|
GstFramePositionner * pos)
|
|
{
|
|
sync_properties_with_track (pos, track);
|
|
}
|
|
|
|
static void
|
|
_track_changed_cb (GESTrackElement * trksrc, GParamSpec * arg G_GNUC_UNUSED,
|
|
GstFramePositionner * pos)
|
|
{
|
|
GESTrack *new_track;
|
|
|
|
if (pos->current_track) {
|
|
g_signal_handlers_disconnect_by_func (pos->current_track,
|
|
(GCallback) _track_restriction_changed_cb, pos);
|
|
g_object_weak_unref (G_OBJECT (pos->current_track),
|
|
(GWeakNotify) _weak_notify_cb, pos);
|
|
}
|
|
|
|
new_track = ges_track_element_get_track (trksrc);
|
|
if (new_track) {
|
|
pos->current_track = new_track;
|
|
g_object_weak_ref (G_OBJECT (new_track), (GWeakNotify) _weak_notify_cb,
|
|
pos);
|
|
GST_DEBUG_OBJECT (pos, "connecting to track : %p", pos->current_track);
|
|
g_signal_connect (pos->current_track, "notify::restriction-caps",
|
|
(GCallback) _track_restriction_changed_cb, pos);
|
|
sync_properties_with_track (pos, pos->current_track);
|
|
} else
|
|
pos->current_track = NULL;
|
|
}
|
|
|
|
void
|
|
ges_frame_positionner_set_source_and_filter (GstFramePositionner * pos,
|
|
GESTrackElement * trksrc, GstElement * capsfilter)
|
|
{
|
|
pos->track_source = trksrc;
|
|
pos->capsfilter = capsfilter;
|
|
pos->current_track = ges_track_element_get_track (trksrc);
|
|
g_object_weak_ref (G_OBJECT (pos->current_track),
|
|
(GWeakNotify) _weak_notify_cb, pos);
|
|
|
|
GST_DEBUG_OBJECT (pos, "connecting to track : %p", pos->current_track);
|
|
|
|
g_signal_connect (pos->current_track, "notify::restriction-caps",
|
|
(GCallback) _track_restriction_changed_cb, pos);
|
|
g_signal_connect (trksrc, "notify::track", (GCallback) _track_changed_cb,
|
|
pos);
|
|
sync_properties_with_track (pos, pos->current_track);
|
|
}
|
|
|
|
static void
|
|
gst_frame_positionner_dispose (GObject * object)
|
|
{
|
|
GstFramePositionner *pos = GST_FRAME_POSITIONNER (object);
|
|
|
|
if (pos->track_source) {
|
|
g_signal_handlers_disconnect_by_func (pos->track_source, _track_changed_cb,
|
|
pos);
|
|
pos->track_source = NULL;
|
|
}
|
|
|
|
if (pos->current_track) {
|
|
g_signal_handlers_disconnect_by_func (pos->current_track,
|
|
_track_restriction_changed_cb, pos);
|
|
g_object_weak_unref (G_OBJECT (pos->current_track),
|
|
(GWeakNotify) _weak_notify_cb, pos);
|
|
pos->current_track = NULL;
|
|
}
|
|
|
|
G_OBJECT_CLASS (gst_frame_positionner_parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_frame_positionner_class_init (GstFramePositionnerClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
GstBaseTransformClass *base_transform_class =
|
|
GST_BASE_TRANSFORM_CLASS (klass);
|
|
|
|
gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass),
|
|
gst_static_pad_template_get (&gst_frame_positionner_src_template));
|
|
gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass),
|
|
gst_static_pad_template_get (&gst_frame_positionner_sink_template));
|
|
|
|
gobject_class->set_property = gst_frame_positionner_set_property;
|
|
gobject_class->get_property = gst_frame_positionner_get_property;
|
|
gobject_class->dispose = gst_frame_positionner_dispose;
|
|
base_transform_class->transform_ip =
|
|
GST_DEBUG_FUNCPTR (gst_frame_positionner_transform_ip);
|
|
|
|
/**
|
|
* gstframepositionner:alpha:
|
|
*
|
|
* The desired alpha for the stream.
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_ALPHA,
|
|
g_param_spec_double ("alpha", "alpha", "alpha of the stream",
|
|
0.0, 1.0, 1.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
|
|
|
|
/**
|
|
* gstframepositionner:posx:
|
|
*
|
|
* The desired x position for the stream.
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_POSX,
|
|
g_param_spec_int ("posx", "posx", "x position of the stream",
|
|
MIN_PIXELS, MAX_PIXELS, 0,
|
|
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
|
|
|
|
|
|
/**
|
|
* gstframepositionner:posy:
|
|
*
|
|
* The desired y position for the stream.
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_POSY,
|
|
g_param_spec_int ("posy", "posy", "y position of the stream",
|
|
MIN_PIXELS, MAX_PIXELS, 0,
|
|
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
|
|
|
|
/**
|
|
* gstframepositionner:zorder:
|
|
*
|
|
* The desired z order for the stream.
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_ZORDER,
|
|
g_param_spec_uint ("zorder", "zorder", "z order of the stream",
|
|
0, 10000, 0, G_PARAM_READWRITE));
|
|
|
|
/**
|
|
* gesframepositionner:width:
|
|
*
|
|
* The desired width for that source.
|
|
* Set to 0 if size is not mandatory, will be set to width of the current track.
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_WIDTH,
|
|
g_param_spec_int ("width", "width", "width of the source",
|
|
0, MAX_PIXELS, 0, G_PARAM_READWRITE));
|
|
|
|
/**
|
|
* gesframepositionner:height:
|
|
*
|
|
* The desired height for that source.
|
|
* Set to 0 if size is not mandatory, will be set to height of the current track.
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_HEIGHT,
|
|
g_param_spec_int ("height", "height", "height of the source",
|
|
0, MAX_PIXELS, 0, G_PARAM_READWRITE));
|
|
|
|
gst_element_class_set_static_metadata (GST_ELEMENT_CLASS (klass),
|
|
"frame positionner", "Metadata",
|
|
"This element provides with tagging facilities",
|
|
"mduponchelle1@gmail.com");
|
|
}
|
|
|
|
static void
|
|
gst_frame_positionner_init (GstFramePositionner * framepositionner)
|
|
{
|
|
framepositionner->alpha = 1.0;
|
|
framepositionner->posx = 0.0;
|
|
framepositionner->posy = 0.0;
|
|
framepositionner->zorder = 0;
|
|
framepositionner->width = 0;
|
|
framepositionner->height = 0;
|
|
framepositionner->fps_n = -1;
|
|
framepositionner->fps_d = -1;
|
|
framepositionner->track_width = 0;
|
|
framepositionner->track_height = 0;
|
|
framepositionner->capsfilter = NULL;
|
|
framepositionner->track_source = NULL;
|
|
framepositionner->current_track = NULL;
|
|
}
|
|
|
|
void
|
|
gst_frame_positionner_set_property (GObject * object, guint property_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstFramePositionner *framepositionner = GST_FRAME_POSITIONNER (object);
|
|
|
|
|
|
GST_OBJECT_LOCK (framepositionner);
|
|
switch (property_id) {
|
|
case PROP_ALPHA:
|
|
framepositionner->alpha = g_value_get_double (value);
|
|
break;
|
|
case PROP_POSX:
|
|
framepositionner->posx = g_value_get_int (value);
|
|
break;
|
|
case PROP_POSY:
|
|
framepositionner->posy = g_value_get_int (value);
|
|
break;
|
|
case PROP_ZORDER:
|
|
framepositionner->zorder = g_value_get_uint (value);
|
|
break;
|
|
case PROP_WIDTH:
|
|
framepositionner->width = g_value_get_int (value);
|
|
gst_frame_positionner_update_properties (framepositionner);
|
|
break;
|
|
case PROP_HEIGHT:
|
|
framepositionner->height = g_value_get_int (value);
|
|
gst_frame_positionner_update_properties (framepositionner);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
GST_OBJECT_UNLOCK (framepositionner);
|
|
}
|
|
|
|
void
|
|
gst_frame_positionner_get_property (GObject * object, guint property_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstFramePositionner *pos = GST_FRAME_POSITIONNER (object);
|
|
gint real_width, real_height;
|
|
|
|
GST_DEBUG_OBJECT (pos, "get_property");
|
|
|
|
switch (property_id) {
|
|
case PROP_ALPHA:
|
|
g_value_set_double (value, pos->alpha);
|
|
break;
|
|
case PROP_POSX:
|
|
g_value_set_int (value, pos->posx);
|
|
break;
|
|
case PROP_POSY:
|
|
g_value_set_int (value, pos->posy);
|
|
break;
|
|
case PROP_ZORDER:
|
|
g_value_set_uint (value, pos->zorder);
|
|
break;
|
|
case PROP_WIDTH:
|
|
real_width = (pos->width > 0) ? pos->width : pos->track_width;
|
|
g_value_set_int (value, real_width);
|
|
break;
|
|
case PROP_HEIGHT:
|
|
real_height = (pos->height > 0) ? pos->height : pos->track_height;
|
|
g_value_set_int (value, real_height);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
GType
|
|
gst_frame_positionner_meta_api_get_type (void)
|
|
{
|
|
static volatile GType type;
|
|
static const gchar *tags[] = { "video", NULL };
|
|
|
|
if (g_once_init_enter (&type)) {
|
|
GType _type = gst_meta_api_type_register ("GstFramePositionnerApi", tags);
|
|
g_once_init_leave (&type, _type);
|
|
}
|
|
return type;
|
|
}
|
|
|
|
static const GstMetaInfo *
|
|
gst_frame_positionner_get_info (void)
|
|
{
|
|
static const GstMetaInfo *meta_info = NULL;
|
|
|
|
if (g_once_init_enter (&meta_info)) {
|
|
const GstMetaInfo *meta =
|
|
gst_meta_register (gst_frame_positionner_meta_api_get_type (),
|
|
"GstFramePositionnerMeta",
|
|
sizeof (GstFramePositionnerMeta), (GstMetaInitFunction) NULL,
|
|
(GstMetaFreeFunction) NULL,
|
|
(GstMetaTransformFunction) gst_frame_positionner_meta_transform);
|
|
g_once_init_leave (&meta_info, meta);
|
|
}
|
|
return meta_info;
|
|
}
|
|
|
|
static gboolean
|
|
gst_frame_positionner_meta_transform (GstBuffer * dest, GstMeta * meta,
|
|
GstBuffer * buffer, GQuark type, gpointer data)
|
|
{
|
|
GstFramePositionnerMeta *dmeta, *smeta;
|
|
|
|
smeta = (GstFramePositionnerMeta *) meta;
|
|
|
|
if (GST_META_TRANSFORM_IS_COPY (type)) {
|
|
/* only copy if the complete data is copied as well */
|
|
dmeta =
|
|
(GstFramePositionnerMeta *) gst_buffer_add_meta (dest,
|
|
gst_frame_positionner_get_info (), NULL);
|
|
dmeta->alpha = smeta->alpha;
|
|
dmeta->posx = smeta->posx;
|
|
dmeta->posy = smeta->posy;
|
|
dmeta->zorder = smeta->zorder;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_frame_positionner_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
|
|
{
|
|
GstFramePositionnerMeta *meta;
|
|
GstFramePositionner *framepositionner = GST_FRAME_POSITIONNER (trans);
|
|
GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buf);
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
|
|
gst_object_sync_values (GST_OBJECT (trans), timestamp);
|
|
}
|
|
|
|
meta =
|
|
(GstFramePositionnerMeta *) gst_buffer_add_meta (buf,
|
|
gst_frame_positionner_get_info (), NULL);
|
|
|
|
GST_OBJECT_LOCK (framepositionner);
|
|
meta->alpha = framepositionner->alpha;
|
|
meta->posx = framepositionner->posx;
|
|
meta->posy = framepositionner->posy;
|
|
meta->zorder = framepositionner->zorder;
|
|
GST_OBJECT_UNLOCK (framepositionner);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|