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::BufferFormat format) {
  16   switch (format) {
  17     case gfx::BufferFormat::RGBA_8888:
  18       return WINDOW_FORMAT_RGBA_8888;
  19     case gfx::BufferFormat::ATC:
  20     case gfx::BufferFormat::ATCIA:
  21     case gfx::BufferFormat::DXT1:
  22     case gfx::BufferFormat::DXT5:
  23     case gfx::BufferFormat::ETC1:
  24     case gfx::BufferFormat::R_8:
  25     case gfx::BufferFormat::RGBA_4444:
  26     case gfx::BufferFormat::RGBX_8888:
  27     case gfx::BufferFormat::BGRA_8888:
  28     case gfx::BufferFormat::YUV_420:
  29       NOTREACHED();
  30       return 0;
  31   }
  32
  33   NOTREACHED();
  34   return 0;
  35 }
  36
  37 }  // namespace
  38
  39 GpuMemoryBufferImplSurfaceTexture::GpuMemoryBufferImplSurfaceTexture(
  40     gfx::GpuMemoryBufferId id,
  41     const gfx::Size& size,
  42     gfx::BufferFormat format,
  43     const DestructionCallback& callback,
  44     ANativeWindow* native_window)
  45     : GpuMemoryBufferImpl(id, size, format, callback),
  46       native_window_(native_window),
  47       stride_(0) {}
  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     gfx::BufferFormat 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   DCHECK_LE(size_.width(), buffer.stride);
  86   size_t row_size_in_bytes = 0;
  87   bool valid_row_size =
  88       RowSizeInBytes(buffer.stride, format_, 0, &row_size_in_bytes);
  89   DCHECK(valid_row_size);
  90
  91   stride_ = row_size_in_bytes;
  92   mapped_ = true;
  93   *data = buffer.bits;
  94   return true;
  95 }
  96
  97 void GpuMemoryBufferImplSurfaceTexture::Unmap() {
  98   TRACE_EVENT0("gpu", "GpuMemoryBufferImplSurfaceTexture::Unmap");
  99
 100   DCHECK(mapped_);
 101   ANativeWindow_unlockAndPost(native_window_);
 102   mapped_ = false;
 103 }
 104
 105 void GpuMemoryBufferImplSurfaceTexture::GetStride(int* stride) const {
 106   *stride = stride_;
 107 }
 108
 109 gfx::GpuMemoryBufferHandle GpuMemoryBufferImplSurfaceTexture::GetHandle()
 110     const {
 111   gfx::GpuMemoryBufferHandle handle;
 112   handle.type = gfx::SURFACE_TEXTURE_BUFFER;
 113   handle.id = id_;
 114   return handle;
 115 }
 116
 117 }  // namespace content