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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "VideoFrameChromiumImpl.h"
     33 
     34 #include "VideoFrameChromium.h"
     35 #include "WebVideoFrame.h"
     36 
     37 using namespace WebCore;
     38 
     39 namespace WebKit {
     40 
     41 WebVideoFrame* VideoFrameChromiumImpl::toWebVideoFrame(VideoFrameChromium* videoFrame)
     42 {
     43     VideoFrameChromiumImpl* wrappedFrame = static_cast<VideoFrameChromiumImpl*>(videoFrame);
     44     if (wrappedFrame)
     45         return wrappedFrame->m_webVideoFrame;
     46     return 0;
     47 }
     48 
     49 VideoFrameChromiumImpl::VideoFrameChromiumImpl(WebVideoFrame* webVideoFrame)
     50     : m_webVideoFrame(webVideoFrame)
     51 {
     52 }
     53 
     54 VideoFrameChromium::SurfaceType VideoFrameChromiumImpl::surfaceType() const
     55 {
     56     if (m_webVideoFrame)
     57         return static_cast<VideoFrameChromium::SurfaceType>(m_webVideoFrame->surfaceType());
     58     return TypeSystemMemory;
     59 }
     60 
     61 VideoFrameChromium::Format VideoFrameChromiumImpl::format() const
     62 {
     63     if (m_webVideoFrame)
     64         return static_cast<VideoFrameChromium::Format>(m_webVideoFrame->format());
     65     return Invalid;
     66 }
     67 
     68 unsigned VideoFrameChromiumImpl::width() const
     69 {
     70     if (m_webVideoFrame)
     71         return m_webVideoFrame->width();
     72     return 0;
     73 }
     74 
     75 unsigned VideoFrameChromiumImpl::width(unsigned plane) const
     76 {
     77     unsigned planeWidth = width();
     78     if (format() == YV12 && plane != static_cast<unsigned>(yPlane))
     79         planeWidth /= 2;
     80     return planeWidth;
     81 }
     82 
     83 unsigned VideoFrameChromiumImpl::height() const
     84 {
     85     if (m_webVideoFrame)
     86         return m_webVideoFrame->height();
     87     return 0;
     88 }
     89 
     90 unsigned VideoFrameChromiumImpl::height(unsigned plane) const
     91 {
     92     unsigned planeHeight = height();
     93     if (format() == YV12 && plane != static_cast<unsigned>(yPlane))
     94         planeHeight /= 2;
     95     return planeHeight;
     96 }
     97 
     98 unsigned VideoFrameChromiumImpl::planes() const
     99 {
    100     if (m_webVideoFrame)
    101         return m_webVideoFrame->planes();
    102     return 0;
    103 }
    104 
    105 int VideoFrameChromiumImpl::stride(unsigned plane) const
    106 {
    107     if (m_webVideoFrame)
    108         return m_webVideoFrame->stride(plane);
    109     return 0;
    110 }
    111 
    112 const void* VideoFrameChromiumImpl::data(unsigned plane) const
    113 {
    114     if (m_webVideoFrame)
    115         return m_webVideoFrame->data(plane);
    116     return 0;
    117 }
    118 
    119 unsigned VideoFrameChromiumImpl::texture(unsigned plane) const
    120 {
    121     if (m_webVideoFrame)
    122         return m_webVideoFrame->texture(plane);
    123     return 0;
    124 }
    125 
    126 const IntSize VideoFrameChromiumImpl::requiredTextureSize(unsigned plane) const
    127 {
    128     return IntSize(stride(plane), height(plane));
    129 }
    130 
    131 bool VideoFrameChromiumImpl::hasPaddingBytes(unsigned plane) const
    132 {
    133     if (m_webVideoFrame)
    134         return stride(plane) - width(plane) > 0;
    135     return false;
    136 }
    137 
    138 } // namespace WebKit
    139