mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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193 lines
4.9 KiB
C++
193 lines
4.9 KiB
C++
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/* GStreamer
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* Copyright (C) 2022 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "gstwicimagingfactory.h"
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#include <wrl.h>
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/* *INDENT-OFF* */
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using namespace Microsoft::WRL;
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/* *INDENT-ON* */
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GST_DEBUG_CATEGORY_STATIC (gst_wic_imaging_factory_debug);
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#define GST_CAT_DEFAULT gst_wic_imaging_factory_debug
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struct _GstWicImagingFactory
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{
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GstObject parent;
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IWICImagingFactory *handle;
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GThread *thread;
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GMutex lock;
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GCond cond;
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GMainContext *context;
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GMainLoop *loop;
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};
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static void gst_wic_imaging_factory_constructed (GObject * object);
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static void gst_wic_imaging_factory_finalize (GObject * object);
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static gpointer gst_wic_imaging_factory_func (GstWicImagingFactory * self);
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#define gst_wic_imaging_factory_parent_class parent_class
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G_DEFINE_TYPE (GstWicImagingFactory, gst_wic_imaging_factory, GST_TYPE_OBJECT);
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static void
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gst_wic_imaging_factory_class_init (GstWicImagingFactoryClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->constructed = gst_wic_imaging_factory_constructed;
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object_class->finalize = gst_wic_imaging_factory_finalize;
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}
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static void
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gst_wic_imaging_factory_init (GstWicImagingFactory * self)
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{
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g_mutex_init (&self->lock);
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g_cond_init (&self->cond);
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self->context = g_main_context_new ();
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self->loop = g_main_loop_new (self->context, FALSE);
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}
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static void
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gst_wic_imaging_factory_constructed (GObject * object)
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{
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GstWicImagingFactory *self = GST_WIC_IMAGING_FACTORY (object);
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g_mutex_lock (&self->lock);
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self->thread = g_thread_new ("GstWicImagingFactory",
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(GThreadFunc) gst_wic_imaging_factory_func, self);
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while (!g_main_loop_is_running (self->loop))
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g_cond_wait (&self->cond, &self->lock);
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g_mutex_unlock (&self->lock);
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G_OBJECT_CLASS (parent_class)->constructed (object);
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}
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static void
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gst_wic_imaging_factory_finalize (GObject * object)
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{
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GstWicImagingFactory *self = GST_WIC_IMAGING_FACTORY (object);
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if (self->loop) {
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g_main_loop_quit (self->loop);
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g_thread_join (self->thread);
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g_main_loop_unref (self->loop);
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g_main_context_unref (self->context);
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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loop_running_cb (GstWicImagingFactory * self)
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{
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g_mutex_lock (&self->lock);
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g_cond_signal (&self->cond);
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g_mutex_unlock (&self->lock);
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return G_SOURCE_REMOVE;
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}
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static gpointer
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gst_wic_imaging_factory_func (GstWicImagingFactory * self)
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{
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HRESULT hr;
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ComPtr < IWICImagingFactory > factory;
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GSource *idle_source;
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CoInitializeEx (nullptr, COINIT_MULTITHREADED);
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g_main_context_push_thread_default (self->context);
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idle_source = g_idle_source_new ();
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g_source_set_callback (idle_source,
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(GSourceFunc) loop_running_cb, self, nullptr);
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g_source_attach (idle_source, self->context);
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g_source_unref (idle_source);
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hr = CoCreateInstance (CLSID_WICImagingFactory, nullptr,
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CLSCTX_INPROC_SERVER, IID_PPV_ARGS (&factory));
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if (FAILED (hr)) {
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GST_ERROR_OBJECT (self, "Failed to create factory handle, hr: 0x%x",
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(guint) hr);
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} else {
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self->handle = factory.Detach ();
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}
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run_loop:
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g_main_loop_run (self->loop);
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if (self->handle)
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self->handle->Release ();
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g_main_context_pop_thread_default (self->context);
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CoUninitialize ();
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return nullptr;
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}
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GstWicImagingFactory *
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gst_wic_imaging_factory_new (void)
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{
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GstWicImagingFactory *self;
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self = (GstWicImagingFactory *) g_object_new (GST_TYPE_WIC_IMAGING_FACTORY,
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nullptr);
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if (!self->handle) {
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gst_object_unref (self);
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return nullptr;
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}
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gst_object_ref_sink (self);
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return self;
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}
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IWICImagingFactory *
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gst_wic_imaging_factory_get_handle (GstWicImagingFactory * factory)
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{
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g_return_val_if_fail (GST_IS_WIC_IMAGING_FACTORY (factory), nullptr);
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return factory->handle;
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}
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HRESULT
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gst_wic_imaging_factory_check_codec_support (GstWicImagingFactory * factory,
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gboolean is_decoder, REFGUID codec_id)
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{
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HRESULT hr = E_FAIL;
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g_return_val_if_fail (GST_IS_WIC_IMAGING_FACTORY (factory), E_FAIL);
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if (is_decoder) {
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ComPtr < IWICBitmapDecoder > decoder;
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hr = factory->handle->CreateDecoder (codec_id, nullptr, &decoder);
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} else {
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ComPtr < IWICBitmapEncoder > encoder;
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hr = factory->handle->CreateEncoder (codec_id, nullptr, &encoder);
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}
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return hr;
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}
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