Migrate content/common/gpu/media code to media/gpu

content/common/gpu/media/android_copying_backing_strategy.cc

-// Copyright 2015 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 "content/common/gpu/media/android_copying_backing_strategy.h"
-
-#include "base/bind.h"
-#include "base/logging.h"
-#include "base/trace_event/trace_event.h"
-#include "content/common/gpu/media/avda_return_on_failure.h"
-#include "gpu/command_buffer/service/context_group.h"
-#include "gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h"
-#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
-#include "media/base/limits.h"
-#include "media/video/picture.h"
-#include "ui/gl/android/surface_texture.h"
-#include "ui/gl/gl_bindings.h"
-
-namespace content {
-
-AndroidCopyingBackingStrategy::AndroidCopyingBackingStrategy(
-    AVDAStateProvider* state_provider)
-    : state_provider_(state_provider),
-      surface_texture_id_(0),
-      media_codec_(nullptr) {}
-
-AndroidCopyingBackingStrategy::~AndroidCopyingBackingStrategy() {}
-
-gfx::ScopedJavaSurface AndroidCopyingBackingStrategy::Initialize(
-    int surface_view_id) {
-  if (surface_view_id != media::VideoDecodeAccelerator::Config::kNoSurfaceID) {
-    LOG(ERROR) << "The copying strategy should not be initialized with a "
-                  "surface id.";
-    return gfx::ScopedJavaSurface();
-  }
-
-  // Create a texture and attach the SurfaceTexture to it.
-  glGenTextures(1, &surface_texture_id_);
-  glActiveTexture(GL_TEXTURE0);
-  glBindTexture(GL_TEXTURE_EXTERNAL_OES, surface_texture_id_);
-
-  // Note that the target will be correctly sized, so nearest filtering is all
-  // that's needed.
-  glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-  glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-  glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-  glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-
-  state_provider_->GetGlDecoder()->RestoreTextureUnitBindings(0);
-  state_provider_->GetGlDecoder()->RestoreActiveTexture();
-
-  surface_texture_ = gfx::SurfaceTexture::Create(surface_texture_id_);
-
-  return gfx::ScopedJavaSurface(surface_texture_.get());
-}
-
-void AndroidCopyingBackingStrategy::Cleanup(
-    bool have_context,
-    const AndroidVideoDecodeAccelerator::OutputBufferMap& buffers) {
-  DCHECK(state_provider_->ThreadChecker().CalledOnValidThread());
-
-  if (copier_)
-    copier_->Destroy();
-
-  if (surface_texture_id_ && have_context)
-    glDeleteTextures(1, &surface_texture_id_);
-}
-
-scoped_refptr<gfx::SurfaceTexture>
-AndroidCopyingBackingStrategy::GetSurfaceTexture() const {
-  return surface_texture_;
-}
-
-uint32_t AndroidCopyingBackingStrategy::GetTextureTarget() const {
-  return GL_TEXTURE_2D;
-}
-
-gfx::Size AndroidCopyingBackingStrategy::GetPictureBufferSize() const {
-  return state_provider_->GetSize();
-}
-
-void AndroidCopyingBackingStrategy::UseCodecBufferForPictureBuffer(
-    int32_t codec_buf_index,
-    const media::PictureBuffer& picture_buffer) {
-  // Make sure that the decoder is available.
-  RETURN_ON_FAILURE(state_provider_, state_provider_->GetGlDecoder().get(),
-                    "Failed to get gles2 decoder instance.", ILLEGAL_STATE);
-
-  // Render the codec buffer into |surface_texture_|, and switch it to be
-  // the front buffer.
-  // This ignores the emitted ByteBuffer and instead relies on rendering to
-  // the codec's SurfaceTexture and then copying from that texture to the
-  // client's PictureBuffer's texture.  This means that each picture's data
-  // is written three times: once to the ByteBuffer, once to the
-  // SurfaceTexture, and once to the client's texture.  It would be nicer to
-  // either:
-  // 1) Render directly to the client's texture from MediaCodec (one write);
-  //    or
-  // 2) Upload the ByteBuffer to the client's texture (two writes).
-  // Unfortunately neither is possible:
-  // 1) MediaCodec's use of SurfaceTexture is a singleton, and the texture
-  //    written to can't change during the codec's lifetime.  b/11990461
-  // 2) The ByteBuffer is likely to contain the pixels in a vendor-specific,
-  //    opaque/non-standard format.  It's not possible to negotiate the
-  //    decoder to emit a specific colorspace, even using HW CSC.  b/10706245
-  // So, we live with these two extra copies per picture :(
-  {
-    TRACE_EVENT0("media", "AVDA::ReleaseOutputBuffer");
-    media_codec_->ReleaseOutputBuffer(codec_buf_index, true);
-  }
-
-  {
-    TRACE_EVENT0("media", "AVDA::UpdateTexImage");
-    surface_texture_->UpdateTexImage();
-  }
-
-  float transform_matrix[16];
-  surface_texture_->GetTransformMatrix(transform_matrix);
-
-  DCHECK_LE(1u, picture_buffer.texture_ids().size());
-  uint32_t picture_buffer_texture_id = picture_buffer.texture_ids()[0];
-
-  // Defer initializing the CopyTextureCHROMIUMResourceManager until it is
-  // needed because it takes 10s of milliseconds to initialize.
-  if (!copier_) {
-    copier_.reset(new gpu::CopyTextureCHROMIUMResourceManager());
-    copier_->Initialize(state_provider_->GetGlDecoder().get(),
-                        state_provider_->GetGlDecoder()->GetContextGroup()->
-                            feature_info()->feature_flags());
-  }
-
-  // Here, we copy |surface_texture_id_| to the picture buffer instead of
-  // setting new texture to |surface_texture_| by calling attachToGLContext()
-  // because:
-  // 1. Once we call detachFrameGLContext(), it deletes the texture previously
-  //    attached.
-  // 2. SurfaceTexture requires us to apply a transform matrix when we show
-  //    the texture.
-  copier_->DoCopyTextureWithTransform(
-      state_provider_->GetGlDecoder().get(), GL_TEXTURE_EXTERNAL_OES,
-      surface_texture_id_, GL_TEXTURE_2D, picture_buffer_texture_id,
-      state_provider_->GetSize().width(), state_provider_->GetSize().height(),
-      true, false, false, transform_matrix);
-}
-
-void AndroidCopyingBackingStrategy::CodecChanged(
-    media::VideoCodecBridge* codec) {
-  media_codec_ = codec;
-}
-
-void AndroidCopyingBackingStrategy::OnFrameAvailable() {
-  // TODO(liberato): crbug.com/574948 .  The OnFrameAvailable logic can be
-  // moved into AVDA, and we should wait for it before doing the copy.
-  // Because there were some test failures, we don't do this now but
-  // instead preserve the old behavior.
-}
-
-bool AndroidCopyingBackingStrategy::ArePicturesOverlayable() {
-  return false;
-}
-
-void AndroidCopyingBackingStrategy::UpdatePictureBufferSize(
-    media::PictureBuffer* picture_buffer,
-    const gfx::Size& new_size) {
-  // This strategy uses 2D textures who's allocated memory is dependent on the
-  // size. To update size in all places, we must:
-  // 1) Update the PictureBuffer meta-data
-  picture_buffer->set_size(new_size);
-
-  // 2) Update the GL texture via glTexImage2D. This step assumes the caller
-  // has made our GL context current.
-  DCHECK_LE(1u, picture_buffer->texture_ids().size());
-  glBindTexture(GL_TEXTURE_2D, picture_buffer->texture_ids()[0]);
-  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, new_size.width(), new_size.height(),
-               0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
-  state_provider_->GetGlDecoder()->RestoreActiveTextureUnitBinding(
-      GL_TEXTURE_2D);
-
-  // 3) Update the CHROMIUM Texture's size.
-  gpu::gles2::TextureRef* texture_ref =
-      state_provider_->GetTextureForPicture(*picture_buffer);
-  RETURN_IF_NULL(texture_ref);
-  gpu::gles2::TextureManager* texture_manager =
-      state_provider_->GetGlDecoder()->GetContextGroup()->texture_manager();
-  RETURN_IF_NULL(texture_manager);
-  texture_manager->SetLevelInfo(texture_ref, GetTextureTarget(), 0, GL_RGBA,
-                                new_size.width(), new_size.height(), 1, 0,
-                                GL_RGBA, GL_UNSIGNED_BYTE, gfx::Rect(new_size));
-}
-
-}  // namespace content