mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-10 11:29:55 +00:00
367 lines
11 KiB
C
367 lines
11 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
|
|
/*#define DEBUG_ENABLED */
|
|
#include <gstvideoscale.h>
|
|
|
|
|
|
|
|
/* elementfactory information */
|
|
static GstElementDetails videoscale_details = {
|
|
"Video scaler",
|
|
"Filter/Video",
|
|
"LGPL",
|
|
"Resizes video",
|
|
VERSION,
|
|
"Wim Taymans <wim.taymans@chello.be>",
|
|
"(C) 2000",
|
|
};
|
|
|
|
/* GstVideoscale signals and args */
|
|
enum {
|
|
/* FILL ME */
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
enum {
|
|
ARG_0,
|
|
ARG_WIDTH,
|
|
ARG_HEIGHT,
|
|
ARG_METHOD,
|
|
/* FILL ME */
|
|
};
|
|
|
|
GST_PAD_TEMPLATE_FACTORY (sink_templ,
|
|
"sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_CAPS_NEW (
|
|
"videoscale_caps",
|
|
"video/raw",
|
|
"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0'))
|
|
)
|
|
)
|
|
|
|
GST_PAD_TEMPLATE_FACTORY (src_templ,
|
|
"src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_CAPS_NEW (
|
|
"videoscale_caps",
|
|
"video/raw",
|
|
"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0'))
|
|
)
|
|
)
|
|
|
|
#define GST_TYPE_VIDEOSCALE_METHOD (gst_videoscale_method_get_type())
|
|
static GType
|
|
gst_videoscale_method_get_type (void)
|
|
{
|
|
static GType videoscale_method_type = 0;
|
|
static GEnumValue videoscale_methods[] = {
|
|
{ GST_VIDEOSCALE_POINT_SAMPLE, "0", "Point Sample" },
|
|
{ GST_VIDEOSCALE_NEAREST, "1", "Nearest" },
|
|
{ GST_VIDEOSCALE_BILINEAR, "2", "Bilinear" },
|
|
{ GST_VIDEOSCALE_BICUBIC, "3", "Bicubic" },
|
|
{ 0, NULL, NULL },
|
|
};
|
|
if (!videoscale_method_type) {
|
|
videoscale_method_type = g_enum_register_static ("GstVideoscaleMethod", videoscale_methods);
|
|
}
|
|
return videoscale_method_type;
|
|
}
|
|
|
|
static void gst_videoscale_class_init (GstVideoscaleClass *klass);
|
|
static void gst_videoscale_init (GstVideoscale *videoscale);
|
|
|
|
static void gst_videoscale_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
|
|
static void gst_videoscale_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
|
|
|
|
static void gst_videoscale_chain (GstPad *pad, GstBuffer *buf);
|
|
|
|
static GstElementClass *parent_class = NULL;
|
|
/*static guint gst_videoscale_signals[LAST_SIGNAL] = { 0 }; */
|
|
|
|
GType
|
|
gst_videoscale_get_type (void)
|
|
{
|
|
static GType videoscale_type = 0;
|
|
|
|
if (!videoscale_type) {
|
|
static const GTypeInfo videoscale_info = {
|
|
sizeof(GstVideoscaleClass), NULL,
|
|
NULL,
|
|
(GClassInitFunc)gst_videoscale_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof(GstVideoscale),
|
|
0,
|
|
(GInstanceInitFunc)gst_videoscale_init,
|
|
};
|
|
videoscale_type = g_type_register_static(GST_TYPE_ELEMENT, "GstVideoscale", &videoscale_info, 0);
|
|
}
|
|
return videoscale_type;
|
|
}
|
|
|
|
static void
|
|
gst_videoscale_class_init (GstVideoscaleClass *klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
|
|
gobject_class = (GObjectClass*)klass;
|
|
gstelement_class = (GstElementClass*)klass;
|
|
|
|
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_WIDTH,
|
|
g_param_spec_int("width","width","width",
|
|
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
|
|
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HEIGHT,
|
|
g_param_spec_int("height","height","height",
|
|
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
|
|
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_METHOD,
|
|
g_param_spec_enum("method","method","method",
|
|
GST_TYPE_VIDEOSCALE_METHOD,0,G_PARAM_READWRITE)); /* CHECKME! */
|
|
|
|
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
|
|
|
|
gobject_class->set_property = gst_videoscale_set_property;
|
|
gobject_class->get_property = gst_videoscale_get_property;
|
|
|
|
}
|
|
|
|
/*
|
|
static GstPadNegotiateReturn
|
|
videoscale_negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data)
|
|
{
|
|
GstVideoscale *videoscale = GST_VIDEOSCALE (gst_pad_get_parent (pad));
|
|
|
|
GST_DEBUG(0,"videoscale_negotiate_src");
|
|
|
|
if(*caps==NULL){
|
|
return GST_PAD_NEGOTIATE_FAIL;
|
|
}
|
|
|
|
*caps = GST_CAPS_NEW ( "videoscale_caps",
|
|
"video/raw",
|
|
"format", GST_PROPS_FOURCC (videoscale->format),
|
|
"width", GST_PROPS_INT (videoscale->targetwidth),
|
|
"height", GST_PROPS_INT (videoscale->targetheight)
|
|
);
|
|
|
|
return GST_PAD_NEGOTIATE_AGREE;
|
|
}
|
|
|
|
static GstPadNegotiateReturn
|
|
videoscale_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data)
|
|
{
|
|
GST_DEBUG(0,"videoscale_negotiate_sink");
|
|
|
|
if (*caps==NULL)
|
|
return GST_PAD_NEGOTIATE_FAIL;
|
|
|
|
return GST_PAD_NEGOTIATE_AGREE;
|
|
}
|
|
*/
|
|
|
|
static GstPadConnectReturn
|
|
gst_videoscale_sinkconnect (GstPad *pad, GstCaps *caps)
|
|
{
|
|
GstVideoscale *videoscale;
|
|
|
|
GST_DEBUG(0,"gst_videoscale_sinkconnect");
|
|
videoscale = GST_VIDEOSCALE (gst_pad_get_parent (pad));
|
|
|
|
if (!GST_CAPS_IS_FIXED (caps)) {
|
|
return GST_PAD_CONNECT_DELAYED;
|
|
}
|
|
|
|
gst_caps_get_fourcc_int (caps, "format", &videoscale->format);
|
|
gst_caps_get_int (caps, "width", &videoscale->width);
|
|
gst_caps_get_int (caps, "height", &videoscale->height);
|
|
|
|
gst_videoscale_setup(videoscale);
|
|
|
|
GST_DEBUG (0,"target size %d x %d",videoscale->targetwidth,
|
|
videoscale->targetheight);
|
|
|
|
GST_DEBUG(0,"width %d",videoscale->targetwidth);
|
|
return gst_pad_try_set_caps (videoscale->srcpad,
|
|
GST_CAPS_NEW (
|
|
"videoscale_src",
|
|
"video/raw",
|
|
"format", GST_PROPS_FOURCC (videoscale->format),
|
|
"width", GST_PROPS_INT (videoscale->targetwidth),
|
|
"height", GST_PROPS_INT (videoscale->targetheight)
|
|
));
|
|
}
|
|
|
|
static void
|
|
gst_videoscale_init (GstVideoscale *videoscale)
|
|
{
|
|
GST_DEBUG(0,"gst_videoscale_init");
|
|
videoscale->sinkpad = gst_pad_new_from_template (
|
|
GST_PAD_TEMPLATE_GET (sink_templ), "sink");
|
|
/*gst_pad_set_negotiate_function(videoscale->sinkpad,videoscale_negotiate_sink); */
|
|
gst_element_add_pad(GST_ELEMENT(videoscale),videoscale->sinkpad);
|
|
gst_pad_set_chain_function(videoscale->sinkpad,gst_videoscale_chain);
|
|
gst_pad_set_connect_function(videoscale->sinkpad,gst_videoscale_sinkconnect);
|
|
|
|
videoscale->srcpad = gst_pad_new_from_template (
|
|
GST_PAD_TEMPLATE_GET (src_templ), "src");
|
|
/*gst_pad_set_negotiate_function(videoscale->srcpad,videoscale_negotiate_src); */
|
|
gst_element_add_pad(GST_ELEMENT(videoscale),videoscale->srcpad);
|
|
|
|
videoscale->targetwidth = -1;
|
|
videoscale->targetheight = -1;
|
|
videoscale->method = GST_VIDEOSCALE_NEAREST;
|
|
/*videoscale->method = GST_VIDEOSCALE_BILINEAR; */
|
|
/*videoscale->method = GST_VIDEOSCALE_POINT_SAMPLE; */
|
|
}
|
|
|
|
|
|
static void
|
|
gst_videoscale_chain (GstPad *pad, GstBuffer *buf)
|
|
{
|
|
GstVideoscale *videoscale;
|
|
guchar *data;
|
|
gulong size;
|
|
GstBuffer *outbuf;
|
|
|
|
GST_DEBUG (0,"gst_videoscale_chain");
|
|
|
|
g_return_if_fail (pad != NULL);
|
|
g_return_if_fail (GST_IS_PAD (pad));
|
|
g_return_if_fail (buf != NULL);
|
|
|
|
videoscale = GST_VIDEOSCALE (gst_pad_get_parent (pad));
|
|
data = GST_BUFFER_DATA(buf);
|
|
size = GST_BUFFER_SIZE(buf);
|
|
|
|
if(!videoscale->scale_cc){
|
|
gst_caps_get_int (gst_pad_get_caps(pad), "format", &videoscale->format);
|
|
gst_videoscale_setup(videoscale);
|
|
}
|
|
GST_DEBUG (0,"gst_videoscale_chain: got buffer of %ld bytes in '%s'",size,
|
|
GST_OBJECT_NAME (videoscale));
|
|
|
|
GST_DEBUG(0,"size=%ld from=%dx%d to=%dx%d newsize=%d",
|
|
size,
|
|
videoscale->width, videoscale->height,
|
|
videoscale->targetwidth, videoscale->targetheight,
|
|
videoscale->targetwidth*videoscale->targetheight + videoscale->targetwidth*videoscale->targetheight/2);
|
|
|
|
if(videoscale->targetwidth==videoscale->width &&
|
|
videoscale->targetheight==videoscale->height){
|
|
gst_pad_push(videoscale->srcpad, buf);
|
|
}else{
|
|
outbuf = gst_buffer_new();
|
|
/* XXX this is wrong for anything but I420 */
|
|
GST_BUFFER_SIZE(outbuf) = videoscale->targetwidth*videoscale->targetheight +
|
|
videoscale->targetwidth*videoscale->targetheight/2;
|
|
GST_BUFFER_DATA(outbuf) = g_malloc (videoscale->targetwidth*videoscale->targetheight*2);
|
|
GST_BUFFER_TIMESTAMP(outbuf) = GST_BUFFER_TIMESTAMP(buf);
|
|
|
|
/*g_return_if_fail(videoscale->scale_cc != NULL); */
|
|
videoscale->scale_cc(videoscale, data, GST_BUFFER_DATA(outbuf));
|
|
|
|
GST_DEBUG (0,"gst_videoscale_chain: pushing buffer of %d bytes in '%s'",GST_BUFFER_SIZE(outbuf),
|
|
GST_OBJECT_NAME (videoscale));
|
|
|
|
gst_pad_push(videoscale->srcpad, outbuf);
|
|
|
|
gst_buffer_unref(buf);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_videoscale_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
|
|
{
|
|
GstVideoscale *src;
|
|
|
|
/* it's not null if we got it, but it might not be ours */
|
|
g_return_if_fail(GST_IS_VIDEOSCALE(object));
|
|
src = GST_VIDEOSCALE(object);
|
|
|
|
GST_DEBUG(0,"gst_videoscale_set_property");
|
|
switch (prop_id) {
|
|
case ARG_WIDTH:
|
|
src->targetwidth = g_value_get_int (value);
|
|
break;
|
|
case ARG_HEIGHT:
|
|
src->targetheight = g_value_get_int (value);
|
|
break;
|
|
case ARG_METHOD:
|
|
src->method = g_value_get_enum (value);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_videoscale_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
|
|
{
|
|
GstVideoscale *src;
|
|
|
|
/* it's not null if we got it, but it might not be ours */
|
|
g_return_if_fail(GST_IS_VIDEOSCALE(object));
|
|
src = GST_VIDEOSCALE(object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_WIDTH:
|
|
g_value_set_int (value, src->targetwidth);
|
|
break;
|
|
case ARG_HEIGHT:
|
|
g_value_set_int (value, src->targetheight);
|
|
break;
|
|
case ARG_METHOD:
|
|
g_value_set_enum (value, src->method);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static gboolean
|
|
plugin_init (GModule *module, GstPlugin *plugin)
|
|
{
|
|
GstElementFactory *factory;
|
|
|
|
/* create an elementfactory for the videoscale element */
|
|
factory = gst_element_factory_new("videoscale",GST_TYPE_VIDEOSCALE,
|
|
&videoscale_details);
|
|
g_return_val_if_fail(factory != NULL, FALSE);
|
|
|
|
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (sink_templ));
|
|
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (src_templ));
|
|
|
|
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GstPluginDesc plugin_desc = {
|
|
GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"videoscale",
|
|
plugin_init
|
|
};
|