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f8016687a4
Adding Windows Imaging Component (WIC) plugin with JPEG/PNG decoding support. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1605>
123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/* 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 "gstwicutils.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_EXTERN (gst_wic_utils_debug);
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#define GST_CAT_DEFAULT gst_wic_utils_debug
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static struct
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{
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WICPixelFormatGUID guid;
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GstVideoFormat format;
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} format_map[] = {
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/* GRAY */
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{GUID_WICPixelFormat8bppGray, GST_VIDEO_FORMAT_GRAY8},
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{GUID_WICPixelFormat16bppGray, GST_VIDEO_FORMAT_GRAY16_LE},
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/* RGB/BGR */
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{GUID_WICPixelFormat24bppRGB, GST_VIDEO_FORMAT_RGB},
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{GUID_WICPixelFormat24bppBGR, GST_VIDEO_FORMAT_BGR},
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{GUID_WICPixelFormat32bppRGB, GST_VIDEO_FORMAT_RGBx},
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{GUID_WICPixelFormat32bppBGR, GST_VIDEO_FORMAT_BGRx},
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{GUID_WICPixelFormat32bppRGBA, GST_VIDEO_FORMAT_RGBA},
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{GUID_WICPixelFormat32bppBGRA, GST_VIDEO_FORMAT_BGRA},
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{GUID_WICPixelFormat64bppRGBA, GST_VIDEO_FORMAT_RGBA64_LE},
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};
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gboolean
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gst_wic_pixel_format_to_gst (REFWICPixelFormatGUID guid,
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GstVideoFormat * format)
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{
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g_return_val_if_fail (format != nullptr, FALSE);
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*format = GST_VIDEO_FORMAT_UNKNOWN;
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for (guint i = 0; i < G_N_ELEMENTS (format_map); i++) {
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if (IsEqualGUID (format_map[i].guid, guid)) {
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*format = format_map[i].format;
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return TRUE;
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}
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}
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return FALSE;
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}
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gboolean
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gst_wic_pixel_format_from_gst (GstVideoFormat format, WICPixelFormatGUID * guid)
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{
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g_return_val_if_fail (guid != nullptr, FALSE);
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*guid = GUID_WICPixelFormatUndefined;
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for (guint i = 0; i < G_N_ELEMENTS (format_map); i++) {
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if (format_map[i].format == format) {
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*guid = format_map[i].guid;
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return TRUE;
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}
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}
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return FALSE;
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}
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HRESULT
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gst_wic_lock_bitmap (IWICBitmap * bitmap, const WICRect * rect,
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DWORD lock_flags, IWICBitmapLock ** bitmap_lock, WICBitmapPlane * plane)
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{
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ComPtr < IWICBitmapLock > lock;
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HRESULT hr;
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g_return_val_if_fail (bitmap != nullptr, E_INVALIDARG);
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g_return_val_if_fail (bitmap_lock != nullptr, E_INVALIDARG);
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g_return_val_if_fail (plane != nullptr, E_INVALIDARG);
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hr = bitmap->Lock (rect, lock_flags, &lock);
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if (FAILED (hr)) {
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GST_ERROR ("Failed to lock plane hr: 0x%x", (guint) hr);
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return hr;
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}
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hr = lock->GetStride (&plane->cbStride);
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if (FAILED (hr)) {
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GST_ERROR ("Failed get stride, hr: 0x%x", (guint) hr);
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return hr;
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}
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hr = lock->GetDataPointer (&plane->cbBufferSize, &plane->pbBuffer);
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if (FAILED (hr)) {
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GST_ERROR ("Failed to get data pointer, hr: 0x%x", (guint) hr);
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return hr;
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}
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hr = lock->GetPixelFormat (&plane->Format);
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if (FAILED (hr)) {
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GST_ERROR ("Failed to get pixel format, hr: 0x%x", (guint) hr);
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return hr;
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}
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*bitmap_lock = lock.Detach ();
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return S_OK;
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}
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