[cc] Rename all cc/ filenames to Chromium style

BUG=155413

Review URL: https://codereview.chromium.org/11122003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@161671 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 391 insertions, 0 deletions

diff --git a/cc/video_layer_impl.cc b/cc/video_layer_impl.cc
new file mode 100644
index 0000000..d1fb412
--- /dev/null
+++ b/cc/video_layer_impl.cc
@@ -0,0 +1,391 @@
+// Copyright 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "CCVideoLayerImpl.h"
+
+#include "CCIOSurfaceDrawQuad.h"
+#include "CCLayerTreeHostImpl.h"
+#include "CCProxy.h"
+#include "CCQuadSink.h"
+#include "CCResourceProvider.h"
+#include "CCStreamVideoDrawQuad.h"
+#include "CCTextureDrawQuad.h"
+#include "CCYUVVideoDrawQuad.h"
+#include "Extensions3DChromium.h"
+#include "GraphicsContext3D.h"
+#include "NotImplemented.h"
+#include <public/WebVideoFrame.h>
+
+namespace cc {
+
+CCVideoLayerImpl::CCVideoLayerImpl(int id, WebKit::WebVideoFrameProvider* provider)
+    : CCLayerImpl(id)
+    , m_provider(provider)
+    , m_frame(0)
+    , m_externalTextureResource(0)
+{
+    // This matrix is the default transformation for stream textures, and flips on the Y axis.
+    m_streamTextureMatrix = WebKit::WebTransformationMatrix(
+        1, 0, 0, 0,
+        0, -1, 0, 0,
+        0, 0, 1, 0,
+        0, 1, 0, 1);
+
+    // This only happens during a commit on the compositor thread while the main
+    // thread is blocked. That makes this a thread-safe call to set the video
+    // frame provider client that does not require a lock. The same is true of
+    // the call in the destructor.
+    ASSERT(CCProxy::isMainThreadBlocked());
+    m_provider->setVideoFrameProviderClient(this);
+}
+
+CCVideoLayerImpl::~CCVideoLayerImpl()
+{
+    // See comment in constructor for why this doesn't need a lock.
+    ASSERT(CCProxy::isMainThreadBlocked());
+    if (m_provider) {
+        m_provider->setVideoFrameProviderClient(0);
+        m_provider = 0;
+    }
+    freePlaneData(layerTreeHostImpl()->resourceProvider());
+
+#if !ASSERT_DISABLED
+    for (unsigned i = 0; i < WebKit::WebVideoFrame::maxPlanes; ++i)
+        ASSERT(!m_framePlanes[i].resourceId);
+    ASSERT(!m_externalTextureResource);
+#endif
+}
+
+void CCVideoLayerImpl::stopUsingProvider()
+{
+    // Block the provider from shutting down until this client is done
+    // using the frame.
+    MutexLocker locker(m_providerMutex);
+    ASSERT(!m_frame);
+    m_provider = 0;
+}
+
+// Convert WebKit::WebVideoFrame::Format to GraphicsContext3D's format enum values.
+static GC3Denum convertVFCFormatToGC3DFormat(const WebKit::WebVideoFrame& frame)
+{
+    switch (frame.format()) {
+    case WebKit::WebVideoFrame::FormatYV12:
+    case WebKit::WebVideoFrame::FormatYV16:
+        return GraphicsContext3D::LUMINANCE;
+    case WebKit::WebVideoFrame::FormatNativeTexture:
+        return frame.textureTarget();
+    case WebKit::WebVideoFrame::FormatInvalid:
+    case WebKit::WebVideoFrame::FormatRGB32:
+    case WebKit::WebVideoFrame::FormatEmpty:
+    case WebKit::WebVideoFrame::FormatI420:
+        notImplemented();
+    }
+    return GraphicsContext3D::INVALID_VALUE;
+}
+
+void CCVideoLayerImpl::willDraw(CCResourceProvider* resourceProvider)
+{
+    ASSERT(CCProxy::isImplThread());
+    CCLayerImpl::willDraw(resourceProvider);
+
+    // Explicitly lock and unlock the provider mutex so it can be held from
+    // willDraw to didDraw. Since the compositor thread is in the middle of
+    // drawing, the layer will not be destroyed before didDraw is called.
+    // Therefore, the only thing that will prevent this lock from being released
+    // is the GPU process locking it. As the GPU process can't cause the
+    // destruction of the provider (calling stopUsingProvider), holding this
+    // lock should not cause a deadlock.
+    m_providerMutex.lock();
+
+    willDrawInternal(resourceProvider);
+    freeUnusedPlaneData(resourceProvider);
+
+    if (!m_frame)
+        m_providerMutex.unlock();
+}
+
+void CCVideoLayerImpl::willDrawInternal(CCResourceProvider* resourceProvider)
+{
+    ASSERT(CCProxy::isImplThread());
+    ASSERT(!m_externalTextureResource);
+
+    if (!m_provider) {
+        m_frame = 0;
+        return;
+    }
+
+    m_frame = m_provider->getCurrentFrame();
+
+    if (!m_frame)
+        return;
+
+    m_format = convertVFCFormatToGC3DFormat(*m_frame);
+
+    if (m_format == GraphicsContext3D::INVALID_VALUE) {
+        m_provider->putCurrentFrame(m_frame);
+        m_frame = 0;
+        return;
+    }
+
+    if (m_frame->planes() > WebKit::WebVideoFrame::maxPlanes) {
+        m_provider->putCurrentFrame(m_frame);
+        m_frame = 0;
+        return;
+    }
+
+    if (!allocatePlaneData(resourceProvider)) {
+        m_provider->putCurrentFrame(m_frame);
+        m_frame = 0;
+        return;
+    }
+
+    if (!copyPlaneData(resourceProvider)) {
+        m_provider->putCurrentFrame(m_frame);
+        m_frame = 0;
+        return;
+    }
+
+    if (m_format == GraphicsContext3D::TEXTURE_2D)
+        m_externalTextureResource = resourceProvider->createResourceFromExternalTexture(m_frame->textureId());
+}
+
+void CCVideoLayerImpl::appendQuads(CCQuadSink& quadSink, CCAppendQuadsData& appendQuadsData)
+{
+    ASSERT(CCProxy::isImplThread());
+
+    if (!m_frame)
+        return;
+
+    CCSharedQuadState* sharedQuadState = quadSink.useSharedQuadState(createSharedQuadState());
+    appendDebugBorderQuad(quadSink, sharedQuadState, appendQuadsData);
+
+    // FIXME: When we pass quads out of process, we need to double-buffer, or
+    // otherwise synchonize use of all textures in the quad.
+
+    IntRect quadRect(IntPoint(), contentBounds());
+
+    switch (m_format) {
+    case GraphicsContext3D::LUMINANCE: {
+        // YUV software decoder.
+        const FramePlane& yPlane = m_framePlanes[WebKit::WebVideoFrame::yPlane];
+        const FramePlane& uPlane = m_framePlanes[WebKit::WebVideoFrame::uPlane];
+        const FramePlane& vPlane = m_framePlanes[WebKit::WebVideoFrame::vPlane];
+        scoped_ptr<CCYUVVideoDrawQuad> yuvVideoQuad = CCYUVVideoDrawQuad::create(sharedQuadState, quadRect, yPlane, uPlane, vPlane);
+        quadSink.append(yuvVideoQuad.PassAs<CCDrawQuad>(), appendQuadsData);
+        break;
+    }
+    case GraphicsContext3D::RGBA: {
+        // RGBA software decoder.
+        const FramePlane& plane = m_framePlanes[WebKit::WebVideoFrame::rgbPlane];
+        float widthScaleFactor = static_cast<float>(plane.visibleSize.width()) / plane.size.width();
+
+        bool premultipliedAlpha = true;
+        FloatRect uvRect(0, 0, widthScaleFactor, 1);
+        bool flipped = false;
+        scoped_ptr<CCTextureDrawQuad> textureQuad = CCTextureDrawQuad::create(sharedQuadState, quadRect, plane.resourceId, premultipliedAlpha, uvRect, flipped);
+        quadSink.append(textureQuad.PassAs<CCDrawQuad>(), appendQuadsData);
+        break;
+    }
+    case GraphicsContext3D::TEXTURE_2D: {
+        // NativeTexture hardware decoder.
+        bool premultipliedAlpha = true;
+        FloatRect uvRect(0, 0, 1, 1);
+        bool flipped = false;
+        scoped_ptr<CCTextureDrawQuad> textureQuad = CCTextureDrawQuad::create(sharedQuadState, quadRect, m_externalTextureResource, premultipliedAlpha, uvRect, flipped);
+        quadSink.append(textureQuad.PassAs<CCDrawQuad>(), appendQuadsData);
+        break;
+    }
+    case Extensions3D::TEXTURE_RECTANGLE_ARB: {
+        IntSize textureSize(m_frame->width(), m_frame->height()); 
+        scoped_ptr<CCIOSurfaceDrawQuad> ioSurfaceQuad = CCIOSurfaceDrawQuad::create(sharedQuadState, quadRect, textureSize, m_frame->textureId(), CCIOSurfaceDrawQuad::Unflipped);
+        quadSink.append(ioSurfaceQuad.PassAs<CCDrawQuad>(), appendQuadsData);
+        break;
+    }
+    case Extensions3DChromium::GL_TEXTURE_EXTERNAL_OES: {
+        // StreamTexture hardware decoder.
+        scoped_ptr<CCStreamVideoDrawQuad> streamVideoQuad = CCStreamVideoDrawQuad::create(sharedQuadState, quadRect, m_frame->textureId(), m_streamTextureMatrix);
+        quadSink.append(streamVideoQuad.PassAs<CCDrawQuad>(), appendQuadsData);
+        break;
+    }
+    default:
+        CRASH(); // Someone updated convertVFCFormatToGC3DFormat above but update this!
+    }
+}
+
+void CCVideoLayerImpl::didDraw(CCResourceProvider* resourceProvider)
+{
+    ASSERT(CCProxy::isImplThread());
+    CCLayerImpl::didDraw(resourceProvider);
+
+    if (!m_frame)
+        return;
+
+    if (m_format == GraphicsContext3D::TEXTURE_2D) {
+        ASSERT(m_externalTextureResource);
+        // FIXME: the following assert will not be true when sending resources to a
+        // parent compositor. We will probably need to hold on to m_frame for
+        // longer, and have several "current frames" in the pipeline.
+        ASSERT(!resourceProvider->inUseByConsumer(m_externalTextureResource));
+        resourceProvider->deleteResource(m_externalTextureResource);
+        m_externalTextureResource = 0;
+    }
+
+    m_provider->putCurrentFrame(m_frame);
+    m_frame = 0;
+
+    m_providerMutex.unlock();
+}
+
+static int videoFrameDimension(int originalDimension, unsigned plane, int format)
+{
+    if (format == WebKit::WebVideoFrame::FormatYV12 && plane != WebKit::WebVideoFrame::yPlane)
+        return originalDimension / 2;
+    return originalDimension;
+}
+
+static bool hasPaddingBytes(const WebKit::WebVideoFrame& frame, unsigned plane)
+{
+    return frame.stride(plane) > videoFrameDimension(frame.width(), plane, frame.format());
+}
+
+IntSize CCVideoLayerImpl::computeVisibleSize(const WebKit::WebVideoFrame& frame, unsigned plane)
+{
+    int visibleWidth = videoFrameDimension(frame.width(), plane, frame.format());
+    int originalWidth = visibleWidth;
+    int visibleHeight = videoFrameDimension(frame.height(), plane, frame.format());
+
+    // When there are dead pixels at the edge of the texture, decrease
+    // the frame width by 1 to prevent the rightmost pixels from
+    // interpolating with the dead pixels.
+    if (hasPaddingBytes(frame, plane))
+        --visibleWidth;
+
+    // In YV12, every 2x2 square of Y values corresponds to one U and
+    // one V value. If we decrease the width of the UV plane, we must decrease the
+    // width of the Y texture by 2 for proper alignment. This must happen
+    // always, even if Y's texture does not have padding bytes.
+    if (plane == WebKit::WebVideoFrame::yPlane && frame.format() == WebKit::WebVideoFrame::FormatYV12) {
+        if (hasPaddingBytes(frame, WebKit::WebVideoFrame::uPlane))
+            visibleWidth = originalWidth - 2;
+    }
+
+    return IntSize(visibleWidth, visibleHeight);
+}
+
+bool CCVideoLayerImpl::FramePlane::allocateData(CCResourceProvider* resourceProvider)
+{
+    if (resourceId)
+        return true;
+
+    resourceId = resourceProvider->createResource(CCRenderer::ImplPool, size, format, CCResourceProvider::TextureUsageAny);
+    return resourceId;
+}
+
+void CCVideoLayerImpl::FramePlane::freeData(CCResourceProvider* resourceProvider)
+{
+    if (!resourceId)
+        return;
+
+    resourceProvider->deleteResource(resourceId);
+    resourceId = 0;
+}
+
+bool CCVideoLayerImpl::allocatePlaneData(CCResourceProvider* resourceProvider)
+{
+    int maxTextureSize = resourceProvider->maxTextureSize();
+    for (unsigned planeIndex = 0; planeIndex < m_frame->planes(); ++planeIndex) {
+        CCVideoLayerImpl::FramePlane& plane = m_framePlanes[planeIndex];
+
+        IntSize requiredTextureSize(m_frame->stride(planeIndex), videoFrameDimension(m_frame->height(), planeIndex, m_frame->format()));
+        // FIXME: Remove the test against maxTextureSize when tiled layers are implemented.
+        if (requiredTextureSize.isZero() || requiredTextureSize.width() > maxTextureSize || requiredTextureSize.height() > maxTextureSize)
+            return false;
+
+        if (plane.size != requiredTextureSize || plane.format != m_format) {
+            plane.freeData(resourceProvider);
+            plane.size = requiredTextureSize;
+            plane.format = m_format;
+        }
+
+        if (!plane.resourceId) {
+            if (!plane.allocateData(resourceProvider))
+                return false;
+            plane.visibleSize = computeVisibleSize(*m_frame, planeIndex);
+        }
+    }
+    return true;
+}
+
+bool CCVideoLayerImpl::copyPlaneData(CCResourceProvider* resourceProvider)
+{
+    size_t softwarePlaneCount = m_frame->planes();
+    if (!softwarePlaneCount)
+        return true;
+
+    for (size_t softwarePlaneIndex = 0; softwarePlaneIndex < softwarePlaneCount; ++softwarePlaneIndex) {
+        CCVideoLayerImpl::FramePlane& plane = m_framePlanes[softwarePlaneIndex];
+        const uint8_t* softwarePlanePixels = static_cast<const uint8_t*>(m_frame->data(softwarePlaneIndex));
+        IntRect planeRect(IntPoint(), plane.size);
+        resourceProvider->upload(plane.resourceId, softwarePlanePixels, planeRect, planeRect, IntSize());
+    }
+    return true;
+}
+
+void CCVideoLayerImpl::freePlaneData(CCResourceProvider* resourceProvider)
+{
+    for (unsigned i = 0; i < WebKit::WebVideoFrame::maxPlanes; ++i)
+        m_framePlanes[i].freeData(resourceProvider);
+}
+
+void CCVideoLayerImpl::freeUnusedPlaneData(CCResourceProvider* resourceProvider)
+{
+    unsigned firstUnusedPlane = m_frame ? m_frame->planes() : 0;
+    for (unsigned i = firstUnusedPlane; i < WebKit::WebVideoFrame::maxPlanes; ++i)
+        m_framePlanes[i].freeData(resourceProvider);
+}
+
+void CCVideoLayerImpl::didReceiveFrame()
+{
+    setNeedsRedraw();
+}
+
+void CCVideoLayerImpl::didUpdateMatrix(const float matrix[16])
+{
+    m_streamTextureMatrix = WebKit::WebTransformationMatrix(
+        matrix[0], matrix[1], matrix[2], matrix[3],
+        matrix[4], matrix[5], matrix[6], matrix[7],
+        matrix[8], matrix[9], matrix[10], matrix[11],
+        matrix[12], matrix[13], matrix[14], matrix[15]);
+    setNeedsRedraw();
+}
+
+void CCVideoLayerImpl::didLoseContext()
+{
+    freePlaneData(layerTreeHostImpl()->resourceProvider());
+}
+
+void CCVideoLayerImpl::setNeedsRedraw()
+{
+    layerTreeHostImpl()->setNeedsRedraw();
+}
+
+void CCVideoLayerImpl::dumpLayerProperties(std::string* str, int indent) const
+{
+    str->append(indentString(indent));
+    str->append("video layer\n");
+    CCLayerImpl::dumpLayerProperties(str, indent);
+}
+
+const char* CCVideoLayerImpl::layerTypeAsString() const
+{
+    return "VideoLayer";
+}
+
+}
+
+#endif // USE(ACCELERATED_COMPOSITING)