mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 21:51:09 +00:00
276 lines
9 KiB
C
276 lines
9 KiB
C
/* GStreamer
|
|
* Copyright 2010 ST-Ericsson SA
|
|
* @author: Benjamin Gaignard <benjamin.gaignard@stericsson.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 St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
/*
|
|
* test autovideoconvert:
|
|
* if rgb2bayer is present
|
|
* gst-launch-1.0 videotestsrc num-buffers=2 ! "video/x-raw,width=100,height=100,framerate=10/1" ! autovideoconvert ! "video/x-bayer,width=100,height=100,format=bggr,framerate=10/1" ! fakesink -v
|
|
* if bayer2rgb is present
|
|
* gst-launch-1.0 videotestsrc num-buffers=2 ! "video/x-bayer,width=100,height=100,format=bggr,framerate=10/1" ! autovideoconvert ! "video/x-raw,width=100,height=100,framerate=10/1" ! fakesink -v
|
|
* test with videoconvert
|
|
* gst-launch-1.0 videotestsrc num-buffers=2 ! "video/x-raw,format=RGBx,width=100,height=100,framerate=10/1" ! autovideoconvert ! "video/x-raw,format=RGB16,width=100,height=100,framerate=10/1" ! fakesink -v
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <string.h>
|
|
|
|
#include "gstautovideoconvert.h"
|
|
|
|
GST_DEBUG_CATEGORY (autovideoconvert_debug);
|
|
#define GST_CAT_DEFAULT (autovideoconvert_debug)
|
|
|
|
static GMutex factories_mutex;
|
|
static guint32 factories_cookie = 0; /* Cookie from last time when factories was updated */
|
|
static GList *factories = NULL; /* factories we can use for selecting elements */
|
|
|
|
/* element factory information */
|
|
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
|
|
static GstStateChangeReturn gst_auto_video_convert_change_state (GstElement *
|
|
element, GstStateChange transition);
|
|
|
|
void gst_auto_video_convert_update_factory_list (GstAutoVideoConvert *
|
|
autovideoconvert);
|
|
|
|
static gboolean
|
|
gst_auto_video_convert_element_filter (GstPluginFeature * feature,
|
|
GstAutoVideoConvert * autovideoconvert)
|
|
{
|
|
const gchar *klass;
|
|
|
|
/* we only care about element factories */
|
|
if (G_UNLIKELY (!GST_IS_ELEMENT_FACTORY (feature)))
|
|
return FALSE;
|
|
|
|
klass = gst_element_factory_get_metadata (GST_ELEMENT_FACTORY_CAST (feature),
|
|
GST_ELEMENT_METADATA_KLASS);
|
|
/* only select color space converter */
|
|
if (strstr (klass, "Filter") &&
|
|
strstr (klass, "Converter") && strstr (klass, "Video")) {
|
|
GST_DEBUG_OBJECT (autovideoconvert,
|
|
"gst_auto_video_convert_element_filter found %s\n",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (feature)));
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static GList *
|
|
gst_auto_video_convert_create_factory_list (GstAutoVideoConvert *
|
|
autovideoconvert)
|
|
{
|
|
GList *result = NULL;
|
|
|
|
/* get the feature list using the filter */
|
|
result = gst_registry_feature_filter (gst_registry_get (),
|
|
(GstPluginFeatureFilter) gst_auto_video_convert_element_filter,
|
|
FALSE, autovideoconvert);
|
|
|
|
/* sort on rank and name */
|
|
result = g_list_sort (result, gst_plugin_feature_rank_compare_func);
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
gst_auto_video_convert_update_factory_list (GstAutoVideoConvert *
|
|
autovideoconvert)
|
|
{
|
|
/* use a static mutex to protect factories list and factories cookie */
|
|
g_mutex_lock (&factories_mutex);
|
|
|
|
/* test if a factories list already exist or not */
|
|
if (!factories) {
|
|
/* no factories list create it */
|
|
factories_cookie =
|
|
gst_registry_get_feature_list_cookie (gst_registry_get ());
|
|
factories = gst_auto_video_convert_create_factory_list (autovideoconvert);
|
|
} else {
|
|
/* a factories list exist but is it up to date? */
|
|
if (factories_cookie !=
|
|
gst_registry_get_feature_list_cookie (gst_registry_get ())) {
|
|
/* we need to update the factories list */
|
|
/* first free the old one */
|
|
gst_plugin_feature_list_free (factories);
|
|
/* then create an updated one */
|
|
factories_cookie =
|
|
gst_registry_get_feature_list_cookie (gst_registry_get ());
|
|
factories = gst_auto_video_convert_create_factory_list (autovideoconvert);
|
|
}
|
|
}
|
|
|
|
g_mutex_unlock (&factories_mutex);
|
|
}
|
|
|
|
G_DEFINE_TYPE (GstAutoVideoConvert, gst_auto_video_convert, GST_TYPE_BIN);
|
|
|
|
static void
|
|
gst_auto_video_convert_class_init (GstAutoVideoConvertClass * klass)
|
|
{
|
|
GstElementClass *gstelement_class = (GstElementClass *) klass;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (autovideoconvert_debug, "autovideoconvert", 0,
|
|
"Auto color space converter");
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class, &srctemplate);
|
|
gst_element_class_add_static_pad_template (gstelement_class, &sinktemplate);
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class,
|
|
"Select color space convertor based on caps", "Generic/Bin",
|
|
"Selects the right color space convertor based on the caps",
|
|
"Benjamin Gaignard <benjamin.gaignard@stericsson.com>");
|
|
|
|
gstelement_class->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_auto_video_convert_change_state);
|
|
|
|
}
|
|
|
|
static gboolean
|
|
gst_auto_video_convert_add_autoconvert (GstAutoVideoConvert * autovideoconvert)
|
|
{
|
|
GstPad *pad;
|
|
|
|
if (autovideoconvert->autoconvert)
|
|
return TRUE;
|
|
|
|
autovideoconvert->autoconvert =
|
|
gst_element_factory_make ("autoconvert", "autoconvertchild");
|
|
if (!autovideoconvert->autoconvert) {
|
|
GST_ERROR_OBJECT (autovideoconvert,
|
|
"Could not create autoconvert instance");
|
|
return FALSE;
|
|
}
|
|
|
|
/* first add autoconvert in bin */
|
|
gst_bin_add (GST_BIN (autovideoconvert),
|
|
gst_object_ref (autovideoconvert->autoconvert));
|
|
|
|
/* get sinkpad and link it to ghost sink pad */
|
|
pad = gst_element_get_static_pad (autovideoconvert->autoconvert, "sink");
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (autovideoconvert->sinkpad),
|
|
pad);
|
|
gst_object_unref (pad);
|
|
|
|
/* get srcpad and link it to ghost src pad */
|
|
pad = gst_element_get_static_pad (autovideoconvert->autoconvert, "src");
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (autovideoconvert->srcpad), pad);
|
|
gst_object_unref (pad);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_auto_video_convert_remove_autoconvert (GstAutoVideoConvert *
|
|
autovideoconvert)
|
|
{
|
|
if (!autovideoconvert->autoconvert)
|
|
return;
|
|
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (autovideoconvert->srcpad),
|
|
NULL);
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (autovideoconvert->sinkpad),
|
|
NULL);
|
|
|
|
gst_bin_remove (GST_BIN (autovideoconvert), autovideoconvert->autoconvert);
|
|
gst_object_unref (autovideoconvert->autoconvert);
|
|
autovideoconvert->autoconvert = NULL;
|
|
}
|
|
|
|
static void
|
|
gst_auto_video_convert_init (GstAutoVideoConvert * autovideoconvert)
|
|
{
|
|
GstPadTemplate *pad_tmpl;
|
|
|
|
/* get sink pad template */
|
|
pad_tmpl = gst_static_pad_template_get (&sinktemplate);
|
|
autovideoconvert->sinkpad =
|
|
gst_ghost_pad_new_no_target_from_template ("sink", pad_tmpl);
|
|
/* add sink ghost pad */
|
|
gst_element_add_pad (GST_ELEMENT (autovideoconvert),
|
|
autovideoconvert->sinkpad);
|
|
gst_object_unref (pad_tmpl);
|
|
|
|
/* get src pad template */
|
|
pad_tmpl = gst_static_pad_template_get (&srctemplate);
|
|
autovideoconvert->srcpad =
|
|
gst_ghost_pad_new_no_target_from_template ("src", pad_tmpl);
|
|
/* add src ghost pad */
|
|
gst_element_add_pad (GST_ELEMENT (autovideoconvert),
|
|
autovideoconvert->srcpad);
|
|
gst_object_unref (pad_tmpl);
|
|
|
|
return;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_auto_video_convert_change_state (GstElement * element,
|
|
GstStateChange transition)
|
|
{
|
|
GstAutoVideoConvert *autovideoconvert = GST_AUTO_VIDEO_CONVERT (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
{
|
|
/* create and add autoconvert in bin */
|
|
if (!gst_auto_video_convert_add_autoconvert (autovideoconvert)) {
|
|
ret = GST_STATE_CHANGE_FAILURE;
|
|
return ret;
|
|
}
|
|
/* get an updated list of factories */
|
|
gst_auto_video_convert_update_factory_list (autovideoconvert);
|
|
GST_DEBUG_OBJECT (autovideoconvert, "set factories list");
|
|
/* give factory list to autoconvert */
|
|
g_object_set (GST_ELEMENT (autovideoconvert->autoconvert), "factories",
|
|
factories, NULL);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (gst_auto_video_convert_parent_class)->change_state
|
|
(element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
{
|
|
gst_auto_video_convert_remove_autoconvert (autovideoconvert);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|