GStreamerMediaDescription.cpp   [plain text]

/*
 * Copyright (C) 2016 Metrological Group B.V.
 * Copyright (C) 2016 Igalia S.L
 *
 * 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
 * aint 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 "GStreamerMediaDescription.h"

#include "GUniquePtrGStreamer.h"

#include <gst/pbutils/pbutils.h>
#include <wtf/text/AtomicString.h>
#include <wtf/text/WTFString.h>

#if ENABLE(VIDEO) && USE(GSTREAMER) && ENABLE(MEDIA_SOURCE)

namespace WebCore {

AtomicString GStreamerMediaDescription::codec() const
{
    GUniquePtr<gchar> description(gst_pb_utils_get_codec_description(m_caps.get()));
    String codecName(description.get());

    // Report "H.264 (Main Profile)" and "H.264 (High Profile)" just as "H.264" to allow changes between both variants
    // go unnoticed to the SourceBuffer layer.
    if (codecName.startsWith("H.264")) {
        size_t braceStart = codecName.find(" (");
        size_t braceEnd = codecName.find(")");
        if (braceStart != notFound && braceEnd != notFound)
            codecName.remove(braceStart, braceEnd-braceStart);
    }

    return codecName;
}

bool GStreamerMediaDescription::isVideo() const
{
    GstStructure* structure = gst_caps_get_structure(m_caps.get(), 0);
    const gchar* name = gst_structure_get_name(structure);

    return g_str_has_prefix(name, "video/");
}

bool GStreamerMediaDescription::isAudio() const
{
    GstStructure* structure = gst_caps_get_structure(m_caps.get(), 0);
    const gchar* name = gst_structure_get_name(structure);

    return g_str_has_prefix(name, "audio/");
}

bool GStreamerMediaDescription::isText() const
{
    // FIXME: Implement proper text track support.
    return false;
}

} // namespace WebCore.

#endif // USE(GSTREAMER)