[GStreamer] GStreamer Media Description
authoreocanha@igalia.com <eocanha@igalia.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Wed, 26 Oct 2016 08:38:29 +0000 (08:38 +0000)
committereocanha@igalia.com <eocanha@igalia.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Wed, 26 Oct 2016 08:38:29 +0000 (08:38 +0000)
https://bugs.webkit.org/show_bug.cgi?id=162893

Reviewed by Xabier Rodriguez-Calvar.

Implement the MediaDescription interface for the GStreamer platform.

* platform/graphics/gstreamer/mse/GStreamerMediaDescription.cpp: Added.
(WebCore::GStreamerMediaDescription::codec):
(WebCore::GStreamerMediaDescription::isVideo):
(WebCore::GStreamerMediaDescription::isAudio):
(WebCore::GStreamerMediaDescription::isText):
* platform/graphics/gstreamer/mse/GStreamerMediaDescription.h: Added.
(WebCore::GStreamerMediaDescription::create):
(WebCore::GStreamerMediaDescription::~GStreamerMediaDescription):
(WebCore::GStreamerMediaDescription::GStreamerMediaDescription):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@207876 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebCore/ChangeLog
Source/WebCore/platform/graphics/gstreamer/mse/GStreamerMediaDescription.cpp [new file with mode: 0644]
Source/WebCore/platform/graphics/gstreamer/mse/GStreamerMediaDescription.h [new file with mode: 0644]

index d286fb6..27d083b 100644 (file)
@@ -1,5 +1,24 @@
 2016-10-26  Enrique Ocaña González  <eocanha@igalia.com>
 
+        [GStreamer] GStreamer Media Description
+        https://bugs.webkit.org/show_bug.cgi?id=162893
+
+        Reviewed by Xabier Rodriguez-Calvar.
+
+        Implement the MediaDescription interface for the GStreamer platform.
+
+        * platform/graphics/gstreamer/mse/GStreamerMediaDescription.cpp: Added.
+        (WebCore::GStreamerMediaDescription::codec):
+        (WebCore::GStreamerMediaDescription::isVideo):
+        (WebCore::GStreamerMediaDescription::isAudio):
+        (WebCore::GStreamerMediaDescription::isText):
+        * platform/graphics/gstreamer/mse/GStreamerMediaDescription.h: Added.
+        (WebCore::GStreamerMediaDescription::create):
+        (WebCore::GStreamerMediaDescription::~GStreamerMediaDescription):
+        (WebCore::GStreamerMediaDescription::GStreamerMediaDescription):
+
+2016-10-26  Enrique Ocaña González  <eocanha@igalia.com>
+
         [GStreamer][MSE][EME] Append Pipeline
         https://bugs.webkit.org/show_bug.cgi?id=162874
 
diff --git a/Source/WebCore/platform/graphics/gstreamer/mse/GStreamerMediaDescription.cpp b/Source/WebCore/platform/graphics/gstreamer/mse/GStreamerMediaDescription.cpp
new file mode 100644 (file)
index 0000000..776a0be
--- /dev/null
@@ -0,0 +1,75 @@
+/*
+ * 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)
diff --git a/Source/WebCore/platform/graphics/gstreamer/mse/GStreamerMediaDescription.h b/Source/WebCore/platform/graphics/gstreamer/mse/GStreamerMediaDescription.h
new file mode 100644 (file)
index 0000000..84e263c
--- /dev/null
@@ -0,0 +1,58 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#if ENABLE(VIDEO) && USE(GSTREAMER) && ENABLE(MEDIA_SOURCE)
+
+#include "GRefPtrGStreamer.h"
+#include "MediaDescription.h"
+
+#include <gst/gst.h>
+
+namespace WebCore {
+
+class GStreamerMediaDescription : public MediaDescription {
+public:
+    static Ref<GStreamerMediaDescription> create(GstCaps* caps)
+    {
+        return adoptRef(*new GStreamerMediaDescription(caps));
+    }
+
+    virtual ~GStreamerMediaDescription() = default;
+
+    AtomicString codec() const override;
+    bool isVideo() const override;
+    bool isAudio() const override;
+    bool isText() const override;
+
+private:
+    GStreamerMediaDescription(GstCaps* caps)
+        : MediaDescription()
+        , m_caps(caps)
+    {
+    }
+
+    GRefPtr<GstCaps> m_caps;
+};
+
+} // namespace WebCore.
+
+#endif // USE(GSTREAMER)