ImageGStreamerCairo.cpp [plain text]
#include "config.h"
#include "ImageGStreamer.h"
#if ENABLE(VIDEO) && USE(GSTREAMER)
#include <wtf/gobject/GOwnPtr.h>
using namespace std;
using namespace WebCore;
PassRefPtr<ImageGStreamer> ImageGStreamer::createImage(GstBuffer* buffer)
{
int width = 0, height = 0;
GstCaps* caps = gst_buffer_get_caps(buffer);
GstVideoFormat format;
if (!gst_video_format_parse_caps(caps, &format, &width, &height)) {
gst_caps_unref(caps);
return 0;
}
gst_caps_unref(caps);
cairo_format_t cairoFormat;
if (format == GST_VIDEO_FORMAT_ARGB || format == GST_VIDEO_FORMAT_BGRA)
cairoFormat = CAIRO_FORMAT_ARGB32;
else
cairoFormat = CAIRO_FORMAT_RGB24;
return adoptRef(new ImageGStreamer(buffer, IntSize(width, height), cairoFormat));
}
ImageGStreamer::ImageGStreamer(GstBuffer*& buffer, IntSize size, cairo_format_t& cairoFormat)
: m_image(0)
{
cairo_surface_t* surface = cairo_image_surface_create_for_data(GST_BUFFER_DATA(buffer), cairoFormat,
size.width(), size.height(),
cairo_format_stride_for_width(cairoFormat, size.width()));
ASSERT(cairo_surface_status(surface) == CAIRO_STATUS_SUCCESS);
m_image = BitmapImage::create(surface);
}
ImageGStreamer::~ImageGStreamer()
{
if (m_image)
m_image.clear();
m_image = 0;
}
#endif // USE(GSTREAMER)