1/*
2 * Copyright (C) 2010 Igalia S.L
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20#include "config.h"
21
22#include "GraphicsContextCG.h"
23#include "ImageGStreamer.h"
24#if USE(GSTREAMER)
25
26using namespace WebCore;
27
28PassRefPtr<ImageGStreamer> ImageGStreamer::createImage(GstBuffer* buffer)
29{
30    int width = 0, height = 0;
31    GstCaps* caps = gst_buffer_get_caps(buffer);
32    GstVideoFormat format;
33    if (!gst_video_format_parse_caps(caps, &format, &width, &height)) {
34        gst_caps_unref(caps);
35        return NULL;
36    }
37
38    return adoptRef(new ImageGStreamer(buffer, IntSize(width, height)));
39}
40
41ImageGStreamer::ImageGStreamer(GstBuffer*& buffer, IntSize size)
42    : m_image(0)
43{
44    ASSERT(GST_BUFFER_SIZE(buffer));
45
46    RetainPtr<CFDataRef> data(AdoptCF, CFDataCreateWithBytesNoCopy(0, static_cast<UInt8*>(GST_BUFFER_DATA(buffer)), GST_BUFFER_SIZE(buffer), kCFAllocatorNull));
47    RetainPtr<CGDataProviderRef> provider(AdoptCF, CGDataProviderCreateWithCFData(data.get()));
48    CGImageRef frameImage = CGImageCreate(size.width(), size.height(), 8, 32, size.width()*4, deviceRGBColorSpaceRef(),
49        kCGBitmapByteOrder32Little | kCGImageAlphaFirst, provider.get(), 0, false, kCGRenderingIntentDefault);
50    m_image = BitmapImage::create(frameImage);
51}
52
53ImageGStreamer::~ImageGStreamer()
54{
55    if (m_image)
56        m_image.clear();
57
58    m_image = 0;
59}
60
61#endif // USE(GSTREAMER)
62