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/*
Copyright (C) 2010 Igalia S.L
Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
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; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "ImageGStreamer.h"
#if ENABLE(VIDEO) && USE(GSTREAMER)
#include "GStreamerUtilities.h"
#include <gst/gst.h>
#include <gst/video/gstvideometa.h>
using namespace std;
using namespace WebCore;
ImageGStreamer::ImageGStreamer(GstSample* sample)
{
GstCaps* caps = gst_sample_get_caps(sample);
GstVideoInfo videoInfo;
gst_video_info_init(&videoInfo);
if (!gst_video_info_from_caps(&videoInfo, caps))
return;
// FIXME: Check for https://bugreports.qt.io/browse/QTBUG-44245
// Right now the TextureMapper only supports chromas with one plane
ASSERT(GST_VIDEO_INFO_N_PLANES(&videoInfo) == 1);
GstBuffer* buffer = gst_sample_get_buffer(sample);
if (!gst_video_frame_map(&m_videoFrame, &videoInfo, buffer, GST_MAP_READ))
return;
unsigned char* bufferData = reinterpret_cast<unsigned char*>(GST_VIDEO_FRAME_PLANE_DATA(&m_videoFrame, 0));
QImage::Format imageFormat;
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
imageFormat = (GST_VIDEO_FRAME_FORMAT(&m_videoFrame) == GST_VIDEO_FORMAT_BGRA) ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32;
#else
imageFormat = (GST_VIDEO_FRAME_FORMAT(&m_videoFrame) == GST_VIDEO_FORMAT_ARGB) ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32;
#endif
int stride = GST_VIDEO_FRAME_PLANE_STRIDE(&m_videoFrame, 0);
int width = GST_VIDEO_FRAME_WIDTH(&m_videoFrame);
int height = GST_VIDEO_FRAME_HEIGHT(&m_videoFrame);
// FIXME: ask about stride
QImage image(bufferData, width, height, stride, imageFormat);
QPixmap *surface = new QPixmap(QPixmap::fromImage(qMove(image), Qt::NoFormatConversion));
m_image = BitmapImage::create(surface);
if (GstVideoCropMeta* cropMeta = gst_buffer_get_video_crop_meta(buffer))
setCropRect(FloatRect(cropMeta->x, cropMeta->y, cropMeta->width, cropMeta->height));
}
ImageGStreamer::~ImageGStreamer()
{
if (m_image)
m_image = nullptr;
// We keep the buffer memory mapped until the image is destroyed because the internal
// QImage/QPixmap was created using the buffer data directly.
gst_video_frame_unmap(&m_videoFrame);
}
#endif // USE(GSTREAMER)
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