gstreamer/subprojects/gst-plugins-bad/sys/wic/gstwicutils.cpp
Seungha Yang f8016687a4 wic: Add support for JPEG and PNG decoding
Adding Windows Imaging Component (WIC) plugin with JPEG/PNG decoding
support.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1605>
2022-03-03 00:00:54 +00:00

123 lines
3.4 KiB
C++

/* GStreamer
* Copyright (C) 2022 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.
*/
#include "gstwicutils.h"
#include <wrl.h>
/* *INDENT-OFF* */
using namespace Microsoft::WRL;
/* *INDENT-ON* */
GST_DEBUG_CATEGORY_EXTERN (gst_wic_utils_debug);
#define GST_CAT_DEFAULT gst_wic_utils_debug
static struct
{
WICPixelFormatGUID guid;
GstVideoFormat format;
} format_map[] = {
/* GRAY */
{GUID_WICPixelFormat8bppGray, GST_VIDEO_FORMAT_GRAY8},
{GUID_WICPixelFormat16bppGray, GST_VIDEO_FORMAT_GRAY16_LE},
/* RGB/BGR */
{GUID_WICPixelFormat24bppRGB, GST_VIDEO_FORMAT_RGB},
{GUID_WICPixelFormat24bppBGR, GST_VIDEO_FORMAT_BGR},
{GUID_WICPixelFormat32bppRGB, GST_VIDEO_FORMAT_RGBx},
{GUID_WICPixelFormat32bppBGR, GST_VIDEO_FORMAT_BGRx},
{GUID_WICPixelFormat32bppRGBA, GST_VIDEO_FORMAT_RGBA},
{GUID_WICPixelFormat32bppBGRA, GST_VIDEO_FORMAT_BGRA},
{GUID_WICPixelFormat64bppRGBA, GST_VIDEO_FORMAT_RGBA64_LE},
};
gboolean
gst_wic_pixel_format_to_gst (REFWICPixelFormatGUID guid,
GstVideoFormat * format)
{
g_return_val_if_fail (format != nullptr, FALSE);
*format = GST_VIDEO_FORMAT_UNKNOWN;
for (guint i = 0; i < G_N_ELEMENTS (format_map); i++) {
if (IsEqualGUID (format_map[i].guid, guid)) {
*format = format_map[i].format;
return TRUE;
}
}
return FALSE;
}
gboolean
gst_wic_pixel_format_from_gst (GstVideoFormat format, WICPixelFormatGUID * guid)
{
g_return_val_if_fail (guid != nullptr, FALSE);
*guid = GUID_WICPixelFormatUndefined;
for (guint i = 0; i < G_N_ELEMENTS (format_map); i++) {
if (format_map[i].format == format) {
*guid = format_map[i].guid;
return TRUE;
}
}
return FALSE;
}
HRESULT
gst_wic_lock_bitmap (IWICBitmap * bitmap, const WICRect * rect,
DWORD lock_flags, IWICBitmapLock ** bitmap_lock, WICBitmapPlane * plane)
{
ComPtr < IWICBitmapLock > lock;
HRESULT hr;
g_return_val_if_fail (bitmap != nullptr, E_INVALIDARG);
g_return_val_if_fail (bitmap_lock != nullptr, E_INVALIDARG);
g_return_val_if_fail (plane != nullptr, E_INVALIDARG);
hr = bitmap->Lock (rect, lock_flags, &lock);
if (FAILED (hr)) {
GST_ERROR ("Failed to lock plane hr: 0x%x", (guint) hr);
return hr;
}
hr = lock->GetStride (&plane->cbStride);
if (FAILED (hr)) {
GST_ERROR ("Failed get stride, hr: 0x%x", (guint) hr);
return hr;
}
hr = lock->GetDataPointer (&plane->cbBufferSize, &plane->pbBuffer);
if (FAILED (hr)) {
GST_ERROR ("Failed to get data pointer, hr: 0x%x", (guint) hr);
return hr;
}
hr = lock->GetPixelFormat (&plane->Format);
if (FAILED (hr)) {
GST_ERROR ("Failed to get pixel format, hr: 0x%x", (guint) hr);
return hr;
}
*bitmap_lock = lock.Detach ();
return S_OK;
}