mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-13 12:51:16 +00:00
ba6800ce23
Adding DirectWrite text rendering elements * dwriteclockoverlay: Equivalent to clockoverlay * dwritetimeoverlay: Equivalent to timeoverlay * dwritetextoverlay: Similar to textoverlay but subtitle is not supported Newly added elements support system memory and d3d11 memory Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4826>
142 lines
3.2 KiB
C++
142 lines
3.2 KiB
C++
/* GStreamer
|
|
* Copyright (C) 2023 Seungha Yang <seungha@centricular.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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstdwrite-effect.h"
|
|
|
|
/* *INDENT-OFF* */
|
|
STDMETHODIMP
|
|
IGstDWriteTextEffect::CreateInstance (IGstDWriteTextEffect ** effect)
|
|
{
|
|
IGstDWriteTextEffect *self = new IGstDWriteTextEffect ();
|
|
if (!self)
|
|
return E_OUTOFMEMORY;
|
|
|
|
*effect = self;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
STDMETHODIMP_ (BOOL)
|
|
IGstDWriteTextEffect::IsEnabledColor (const D2D1_COLOR_F & color)
|
|
{
|
|
if (color.r != 0 || color.g != 0 || color.b != 0 || color.a != 0)
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
STDMETHODIMP_ (ULONG)
|
|
IGstDWriteTextEffect::AddRef (void)
|
|
{
|
|
return InterlockedIncrement (&ref_count_);
|
|
}
|
|
|
|
STDMETHODIMP_ (ULONG)
|
|
IGstDWriteTextEffect::Release (void)
|
|
{
|
|
ULONG ref_count;
|
|
|
|
ref_count = InterlockedDecrement (&ref_count_);
|
|
|
|
if (ref_count == 0)
|
|
delete this;
|
|
|
|
return ref_count;
|
|
}
|
|
|
|
STDMETHODIMP
|
|
IGstDWriteTextEffect::QueryInterface (REFIID riid, void ** object)
|
|
{
|
|
if (riid == IID_IUnknown) {
|
|
*object = static_cast<IUnknown *>
|
|
(static_cast<IGstDWriteTextEffect *> (this));
|
|
} else if (riid == IID_IGstDWriteTextEffect) {
|
|
*object = this;
|
|
} else {
|
|
*object = nullptr;
|
|
return E_NOINTERFACE;
|
|
}
|
|
|
|
AddRef ();
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
STDMETHODIMP
|
|
IGstDWriteTextEffect::Clone (IGstDWriteTextEffect ** effect)
|
|
{
|
|
IGstDWriteTextEffect *copy = new IGstDWriteTextEffect ();
|
|
|
|
if (!copy)
|
|
return E_OUTOFMEMORY;
|
|
|
|
for (UINT i = 0; i <= GST_DWRITE_BRUSH_SHADOW; i++)
|
|
copy->brush_[i] = this->brush_[i];
|
|
|
|
*effect = copy;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
STDMETHODIMP
|
|
IGstDWriteTextEffect::GetBrushColor (GST_DWRITE_BRUSH_TARGET target,
|
|
D2D1_COLOR_F * color, BOOL * enabled)
|
|
{
|
|
if (color)
|
|
*color = brush_[target];
|
|
|
|
if (enabled) {
|
|
if (IGstDWriteTextEffect::IsEnabledColor (brush_[target]))
|
|
*enabled = TRUE;
|
|
else
|
|
*enabled = FALSE;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
STDMETHODIMP
|
|
IGstDWriteTextEffect::SetBrushColor (GST_DWRITE_BRUSH_TARGET target,
|
|
const D2D1_COLOR_F * color)
|
|
{
|
|
if (!color)
|
|
brush_[target] = D2D1::ColorF (D2D1::ColorF::Black, 0);
|
|
else
|
|
brush_[target] = *color;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
IGstDWriteTextEffect::IGstDWriteTextEffect (void)
|
|
{
|
|
for (UINT32 i = 0; i < GST_DWRITE_BRUSH_SHADOW; i++)
|
|
brush_[i] = D2D1::ColorF (D2D1::ColorF::Black);
|
|
|
|
/* Disable custom shadow effects by default */
|
|
brush_[GST_DWRITE_BRUSH_SHADOW] = D2D1::ColorF (D2D1::ColorF::Black, 0);
|
|
}
|
|
|
|
IGstDWriteTextEffect::~IGstDWriteTextEffect (void)
|
|
{
|
|
}
|
|
/* *INDENT-ON* */
|