[wip] image color correction

Source/platform/graphics/GraphicsScreen.cpp

+/*
+ * Copyright (C) 2014 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "platform/graphics/GraphicsScreen.h"
+
+#include "platform/graphics/ColorSpaceProfile.h"
+#include "wtf/HashMap.h"
+#include "wtf/ThreadingPrimitives.h"
+
+namespace WebCore {
+
+#if USE(QCMSLIB)
+
+class ColorProfileCache {
+public:
+    void set(long long id, PassRefPtr<ColorSpaceProfile> profile)
+    {
+        MutexLocker locker(m_lock);
+        m_colorProfiles.set(id, profile);
+    }
+
+    PassRefPtr<ColorSpaceProfile> find(long long id)
+    {
+        MutexLocker locker(m_lock);
+        HashMap<long long, RefPtr<ColorSpaceProfile> >::iterator it = m_colorProfiles.find(id);
+        return it != m_colorProfiles.end() ? it->value : nullptr;
+    }
+
+    void remove(long long id)
+    {
+        MutexLocker locker(m_lock);
+        m_colorProfiles.remove(id);
+    }
+
+private:
+    HashMap<long long, RefPtr<ColorSpaceProfile> > m_colorProfiles;
+    Mutex m_lock;
+};
+
+static ColorProfileCache& screenColorProfiles()
+{
+    static ColorProfileCache* cache = new ColorProfileCache();
+    return *cache;
+}
+
+inline bool invalidRGBColorSpaceProfile(qcms_profile* deviceProfile)
+{
+    return icSigRgbData != qcms_profile_get_color_space(deviceProfile) || qcms_profile_is_bogus(deviceProfile);
+}
+
+void setScreenColorProfile(long long id, const char* profile, size_t size)
+{
+    const size_t kMinimumColorProfileSize = 128;
+
+    qcms_profile* deviceProfile = 0;
+
+    if (profile && size > kMinimumColorProfileSize)
+        deviceProfile = qcms_profile_from_memory(profile, size);
+
+    if (deviceProfile && invalidRGBColorSpaceProfile(deviceProfile)) {
+        qcms_profile_release(deviceProfile);
+        deviceProfile = 0;
+    }
+
+    if (!deviceProfile)
+        deviceProfile = qcms_profile_sRGB();
+
+    if (deviceProfile)
+        qcms_profile_precache_output_transform(deviceProfile);
+
+    screenColorProfiles().set(id, ColorSpaceProfile::create(deviceProfile));
+}
+
+PassRefPtr<ColorSpaceProfile> screenColorProfile(long long id)
+{
+    return screenColorProfiles().find(id);
+}
+
+void removeScreenColorProfile(long long id)
+{
+    screenColorProfiles().remove(id);
+}
+
+#else
+
+void setScreenColorProfile(long long, const char*, size_t)
+{
+}
+
+PassRefPtr<ColorSpaceProfile> screenColorProfile(long long)
+{
+    return nullptr;
+}
+
+void removeScreenColorProfile(long long)
+{
+}
+
+#endif // USE(QCMSLIB)
+
+static long long gScreenId = 0;
+
+void setCurrentScreenId(long long id)
+{
+    gScreenId = id;
+}
+
+long long currentScreenId()
+{
+    return gScreenId;
+}
+
+} // namespace WebCore