gfx/webrender_bindings/RenderTextureHost.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "RenderTextureHost.h"
   8
   9 #include "GLContext.h"
  10 #include "mozilla/layers/CompositorThread.h"
  11 #include "RenderThread.h"
  12
  13 namespace mozilla {
  14 namespace wr {
  15
  16 void ActivateBindAndTexParameteri(gl::GLContext* aGL, GLenum aActiveTexture,
  17                                   GLenum aBindTarget, GLuint aBindTexture) {
  18   aGL->fActiveTexture(aActiveTexture);
  19   aGL->fBindTexture(aBindTarget, aBindTexture);
  20   // Initialize the mip filters to linear by default.
  21   aGL->fTexParameteri(aBindTarget, LOCAL_GL_TEXTURE_MIN_FILTER,
  22                       LOCAL_GL_LINEAR);
  23   aGL->fTexParameteri(aBindTarget, LOCAL_GL_TEXTURE_MAG_FILTER,
  24                       LOCAL_GL_LINEAR);
  25 }
  26
  27 RenderTextureHost::RenderTextureHost() : mIsFromDRMSource(false) {
  28   MOZ_COUNT_CTOR(RenderTextureHost);
  29 }
  30
  31 RenderTextureHost::~RenderTextureHost() {
  32   MOZ_ASSERT(RenderThread::IsInRenderThread());
  33   MOZ_COUNT_DTOR(RenderTextureHost);
  34 }
  35
  36 wr::WrExternalImage RenderTextureHost::Lock(uint8_t aChannelIndex,
  37                                             gl::GLContext* aGL) {
  38   return InvalidToWrExternalImage();
  39 }
  40
  41 wr::WrExternalImage RenderTextureHost::LockSWGL(uint8_t aChannelIndex,
  42                                                 void* aContext,
  43                                                 RenderCompositor* aCompositor) {
  44   return InvalidToWrExternalImage();
  45 }
  46
  47 void RenderTextureHost::Destroy() {
  48   MOZ_ASSERT_UNREACHABLE("unexpected to be called");
  49 }
  50
  51 RefPtr<RenderTextureHostUsageInfo> RenderTextureHost::GetOrMergeUsageInfo(
  52     const MutexAutoLock& aProofOfMapLock,
  53     RefPtr<RenderTextureHostUsageInfo> aUsageInfo) {
  54   MOZ_ASSERT(layers::CompositorThreadHolder::IsInCompositorThread());
  55
  56   if (mRenderTextureHostUsageInfo && aUsageInfo) {
  57     if (mRenderTextureHostUsageInfo == aUsageInfo) {
  58       return mRenderTextureHostUsageInfo;
  59     }
  60
  61     // Merge 2 RenderTextureHostUsageInfos to one RenderTextureHostUsageInfo.
  62
  63     const bool overlayDisabled =
  64         mRenderTextureHostUsageInfo->VideoOverlayDisabled() ||
  65         aUsageInfo->VideoOverlayDisabled();
  66
  67     // If mRenderTextureHostUsageInfo and aUsageInfo are different objects, keep
  68     // the older one.
  69     RefPtr<RenderTextureHostUsageInfo> usageInfo = [&]() {
  70       if (aUsageInfo->mCreationTimeStamp <
  71           mRenderTextureHostUsageInfo->mCreationTimeStamp) {
  72         return aUsageInfo;
  73       }
  74       return mRenderTextureHostUsageInfo;
  75     }();
  76
  77     // Merge info.
  78     if (overlayDisabled) {
  79       usageInfo->DisableVideoOverlay();
  80     }
  81     mRenderTextureHostUsageInfo = usageInfo;
  82   } else if (aUsageInfo && !mRenderTextureHostUsageInfo) {
  83     mRenderTextureHostUsageInfo = aUsageInfo;
  84   }
  85
  86   if (!mRenderTextureHostUsageInfo) {
  87     MOZ_ASSERT(!aUsageInfo);
  88     mRenderTextureHostUsageInfo = new RenderTextureHostUsageInfo;
  89   }
  90
  91   MOZ_ASSERT(mRenderTextureHostUsageInfo);
  92   MOZ_ASSERT_IF(aUsageInfo && aUsageInfo->VideoOverlayDisabled(),
  93                 mRenderTextureHostUsageInfo->VideoOverlayDisabled());
  94
  95   return mRenderTextureHostUsageInfo;
  96 }
  97
  98 RefPtr<RenderTextureHostUsageInfo> RenderTextureHost::GetTextureHostUsageInfo(
  99     const MutexAutoLock& aProofOfMapLock) {
 100   MOZ_ASSERT(RenderThread::IsInRenderThread());
 101
 102   return mRenderTextureHostUsageInfo;
 103 }
 104
 105 }  // namespace wr
 106 }  // namespace mozilla