content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h"
   6
   7 #include "base/logging.h"
   8 #include "base/trace_event/trace_event.h"
   9 #include "content/common/android/surface_texture_manager.h"
  10 #include "ui/gl/gl_bindings.h"
  11
  12 namespace content {
  13 namespace {
  14
  15 int WindowFormat(gfx::GpuMemoryBuffer::Format format) {
  16   switch (format) {
  17     case gfx::GpuMemoryBuffer::RGBA_8888:
  18       return WINDOW_FORMAT_RGBA_8888;
  19     case gfx::GpuMemoryBuffer::ATC:
  20     case gfx::GpuMemoryBuffer::ATCIA:
  21     case gfx::GpuMemoryBuffer::DXT1:
  22     case gfx::GpuMemoryBuffer::DXT5:
  23     case gfx::GpuMemoryBuffer::ETC1:
  24     case gfx::GpuMemoryBuffer::R_8:
  25     case gfx::GpuMemoryBuffer::RGBX_8888:
  26     case gfx::GpuMemoryBuffer::BGRA_8888:
  27     case gfx::GpuMemoryBuffer::YUV_420:
  28       NOTREACHED();
  29       return 0;
  30   }
  31
  32   NOTREACHED();
  33   return 0;
  34 }
  35
  36 }  // namespace
  37
  38 GpuMemoryBufferImplSurfaceTexture::GpuMemoryBufferImplSurfaceTexture(
  39     gfx::GpuMemoryBufferId id,
  40     const gfx::Size& size,
  41     Format format,
  42     const DestructionCallback& callback,
  43     ANativeWindow* native_window)
  44     : GpuMemoryBufferImpl(id, size, format, callback),
  45       native_window_(native_window),
  46       stride_(0) {
  47 }
  48
  49 GpuMemoryBufferImplSurfaceTexture::~GpuMemoryBufferImplSurfaceTexture() {
  50   ANativeWindow_release(native_window_);
  51 }
  52
  53 // static
  54 scoped_ptr<GpuMemoryBufferImpl>
  55 GpuMemoryBufferImplSurfaceTexture::CreateFromHandle(
  56     const gfx::GpuMemoryBufferHandle& handle,
  57     const gfx::Size& size,
  58     Format format,
  59     const DestructionCallback& callback) {
  60   ANativeWindow* native_window = SurfaceTextureManager::GetInstance()->
  61       AcquireNativeWidgetForSurfaceTexture(handle.id);
  62   if (!native_window)
  63     return scoped_ptr<GpuMemoryBufferImpl>();
  64
  65   ANativeWindow_setBuffersGeometry(
  66       native_window, size.width(), size.height(), WindowFormat(format));
  67
  68   return make_scoped_ptr<GpuMemoryBufferImpl>(
  69       new GpuMemoryBufferImplSurfaceTexture(
  70           handle.id, size, format, callback, native_window));
  71 }
  72
  73 bool GpuMemoryBufferImplSurfaceTexture::Map(void** data) {
  74   TRACE_EVENT0("gpu", "GpuMemoryBufferImplSurfaceTexture::Map");
  75
  76   DCHECK(!mapped_);
  77   DCHECK(native_window_);
  78   ANativeWindow_Buffer buffer;
  79   int status = ANativeWindow_lock(native_window_, &buffer, NULL);
  80   if (status) {
  81     VLOG(1) << "ANativeWindow_lock failed with error code: " << status;
  82     return false;
  83   }
  84
  85   size_t stride_in_bytes = 0;
  86   if (!StrideInBytes(buffer.stride, format_, 0, &stride_in_bytes))
  87     return false;
  88
  89   DCHECK_LE(size_.width(), buffer.stride);
  90   stride_ = stride_in_bytes;
  91   mapped_ = true;
  92   *data = buffer.bits;
  93   return true;
  94 }
  95
  96 void GpuMemoryBufferImplSurfaceTexture::Unmap() {
  97   TRACE_EVENT0("gpu", "GpuMemoryBufferImplSurfaceTexture::Unmap");
  98
  99   DCHECK(mapped_);
 100   ANativeWindow_unlockAndPost(native_window_);
 101   mapped_ = false;
 102 }
 103
 104 void GpuMemoryBufferImplSurfaceTexture::GetStride(int* stride) const {
 105   *stride = stride_;
 106 }
 107
 108 gfx::GpuMemoryBufferHandle GpuMemoryBufferImplSurfaceTexture::GetHandle()
 109     const {
 110   gfx::GpuMemoryBufferHandle handle;
 111   handle.type = gfx::SURFACE_TEXTURE_BUFFER;
 112   handle.id = id_;
 113   return handle;
 114 }
 115
 116 }  // namespace content