Refactor content/common/gpu into gpu/ipc/service

content/common/gpu/stream_texture_android.cc

Index: content/common/gpu/stream_texture_android.cc
diff --git a/content/common/gpu/stream_texture_android.cc b/content/common/gpu/stream_texture_android.cc
deleted file mode 100644
index ae135d32d58d9c9d1c7a7a9069e2d878bd847b3a..0000000000000000000000000000000000000000
--- a/content/common/gpu/stream_texture_android.cc
+++ /dev/null
@@ -1,380 +0,0 @@
-// Copyright (c) 2013 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/stream_texture_android.h"
-
-#include <string.h>
-
-#include "base/bind.h"
-#include "base/strings/stringize_macros.h"
-#include "content/common/gpu/gpu_channel.h"
-#include "gpu/command_buffer/service/context_group.h"
-#include "gpu/command_buffer/service/context_state.h"
-#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
-#include "gpu/command_buffer/service/texture_manager.h"
-#include "gpu/ipc/common/android/surface_texture_peer.h"
-#include "gpu/ipc/common/gpu_messages.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gl/gl_context.h"
-#include "ui/gl/gl_helper.h"
-#include "ui/gl/scoped_binders.h"
-#include "ui/gl/scoped_make_current.h"
-
-namespace content {
-
-using gpu::gles2::ContextGroup;
-using gpu::gles2::GLES2Decoder;
-using gpu::gles2::TextureManager;
-using gpu::gles2::TextureRef;
-
-// static
-bool StreamTexture::Create(GpuCommandBufferStub* owner_stub,
-                           uint32_t client_texture_id,
-                           int stream_id) {
-  GLES2Decoder* decoder = owner_stub->decoder();
-  TextureManager* texture_manager =
-      decoder->GetContextGroup()->texture_manager();
-  TextureRef* texture = texture_manager->GetTexture(client_texture_id);
-
-  if (texture && (!texture->texture()->target() ||
-                  texture->texture()->target() == GL_TEXTURE_EXTERNAL_OES)) {
-
-    // TODO: Ideally a valid image id was returned to the client so that
-    // it could then call glBindTexImage2D() for doing the following.
-    scoped_refptr<gl::GLImage> gl_image(
-        new StreamTexture(owner_stub, stream_id, texture->service_id()));
-    gfx::Size size = gl_image->GetSize();
-    texture_manager->SetTarget(texture, GL_TEXTURE_EXTERNAL_OES);
-    texture_manager->SetLevelInfo(texture, GL_TEXTURE_EXTERNAL_OES, 0, GL_RGBA,
-                                  size.width(), size.height(), 1, 0, GL_RGBA,
-                                  GL_UNSIGNED_BYTE, gfx::Rect(size));
-    texture_manager->SetLevelImage(texture, GL_TEXTURE_EXTERNAL_OES, 0,
-                                   gl_image.get(),
-                                   gpu::gles2::Texture::UNBOUND);
-    return true;
-  }
-
-  return false;
-}
-
-StreamTexture::StreamTexture(GpuCommandBufferStub* owner_stub,
-                             int32_t route_id,
-                             uint32_t texture_id)
-    : surface_texture_(gfx::SurfaceTexture::Create(texture_id)),
-      size_(0, 0),
-      has_valid_frame_(false),
-      has_pending_frame_(false),
-      owner_stub_(owner_stub),
-      route_id_(route_id),
-      has_listener_(false),
-      texture_id_(texture_id),
-      framebuffer_(0),
-      vertex_shader_(0),
-      fragment_shader_(0),
-      program_(0),
-      vertex_buffer_(0),
-      u_xform_location_(-1),
-      weak_factory_(this) {
-  owner_stub->AddDestructionObserver(this);
-  memset(current_matrix_, 0, sizeof(current_matrix_));
-  owner_stub->channel()->AddRoute(route_id, owner_stub->stream_id(), this);
-  surface_texture_->SetFrameAvailableCallback(base::Bind(
-      &StreamTexture::OnFrameAvailable, weak_factory_.GetWeakPtr()));
-}
-
-StreamTexture::~StreamTexture() {
-  if (owner_stub_) {
-    owner_stub_->RemoveDestructionObserver(this);
-    owner_stub_->channel()->RemoveRoute(route_id_);
-  }
-}
-
-void StreamTexture::OnWillDestroyStub() {
-  owner_stub_->RemoveDestructionObserver(this);
-  owner_stub_->channel()->RemoveRoute(route_id_);
-
-  if (framebuffer_) {
-    scoped_ptr<ui::ScopedMakeCurrent> scoped_make_current(MakeStubCurrent());
-
-    glDeleteProgram(program_);
-    glDeleteShader(vertex_shader_);
-    glDeleteShader(fragment_shader_);
-    glDeleteBuffersARB(1, &vertex_buffer_);
-    glDeleteFramebuffersEXT(1, &framebuffer_);
-    program_ = 0;
-    vertex_shader_ = 0;
-    fragment_shader_ = 0;
-    vertex_buffer_ = 0;
-    framebuffer_ = 0;
-    u_xform_location_ = -1;
-  }
-
-  owner_stub_ = NULL;
-
-  // If the owner goes away, there is no need to keep the SurfaceTexture around.
-  // The GL texture will keep working regardless with the currently bound frame.
-  surface_texture_ = NULL;
-}
-
-void StreamTexture::Destroy(bool have_context) {
-  NOTREACHED();
-}
-
-scoped_ptr<ui::ScopedMakeCurrent> StreamTexture::MakeStubCurrent() {
-  scoped_ptr<ui::ScopedMakeCurrent> scoped_make_current;
-  bool needs_make_current =
-      !owner_stub_->decoder()->GetGLContext()->IsCurrent(NULL);
-  if (needs_make_current) {
-    scoped_make_current.reset(new ui::ScopedMakeCurrent(
-        owner_stub_->decoder()->GetGLContext(), owner_stub_->surface()));
-  }
-  return scoped_make_current;
-}
-
-void StreamTexture::UpdateTexImage() {
-  DCHECK(surface_texture_.get());
-  DCHECK(owner_stub_);
-
-  if (!has_pending_frame_) return;
-
-  scoped_ptr<ui::ScopedMakeCurrent> scoped_make_current(MakeStubCurrent());
-
-  surface_texture_->UpdateTexImage();
-
-  has_valid_frame_ = true;
-  has_pending_frame_ = false;
-
-  float mtx[16];
-  surface_texture_->GetTransformMatrix(mtx);
-
-  if (memcmp(current_matrix_, mtx, sizeof(mtx)) != 0) {
-    memcpy(current_matrix_, mtx, sizeof(mtx));
-
-    if (has_listener_) {
-      GpuStreamTextureMsg_MatrixChanged_Params params;
-      memcpy(&params.m00, mtx, sizeof(mtx));
-      owner_stub_->channel()->Send(
-          new GpuStreamTextureMsg_MatrixChanged(route_id_, params));
-    }
-  }
-
-  if (scoped_make_current.get()) {
-    // UpdateTexImage() implies glBindTexture().
-    // The cmd decoder takes care of restoring the binding for this GLImage as
-    // far as the current context is concerned, but if we temporarily change
-    // it, we have to keep the state intact in *that* context also.
-    const gpu::gles2::ContextState* state =
-        owner_stub_->decoder()->GetContextState();
-    const gpu::gles2::TextureUnit& active_unit =
-        state->texture_units[state->active_texture_unit];
-    glBindTexture(GL_TEXTURE_EXTERNAL_OES,
-                  active_unit.bound_texture_external_oes.get()
-                      ? active_unit.bound_texture_external_oes->service_id()
-                      : 0);
-  }
-}
-
-bool StreamTexture::CopyTexImage(unsigned target) {
-  if (target == GL_TEXTURE_2D) {
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, size_.width(), size_.height(), 0,
-                 GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
-    return CopyTexSubImage(GL_TEXTURE_2D, gfx::Point(), gfx::Rect(size_));
-  }
-
-  if (target != GL_TEXTURE_EXTERNAL_OES)
-    return false;
-
-  if (!owner_stub_ || !surface_texture_.get())
-    return true;
-
-  GLint texture_id;
-  glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id);
-
-  // The following code only works if we're being asked to copy into
-  // |texture_id_|. Copying into a different texture is not supported.
-  // On some devices GL_TEXTURE_BINDING_EXTERNAL_OES is not supported as
-  // glGetIntegerv() parameter. In this case the value of |texture_id| will be
-  // zero and we assume that it is properly bound to |texture_id_|.
-  if (texture_id > 0 && static_cast<unsigned>(texture_id) != texture_id_)
-    return false;
-
-  UpdateTexImage();
-
-  TextureManager* texture_manager =
-      owner_stub_->decoder()->GetContextGroup()->texture_manager();
-  gpu::gles2::Texture* texture =
-      texture_manager->GetTextureForServiceId(texture_id_);
-  if (texture) {
-    // By setting image state to UNBOUND instead of COPIED we ensure that
-    // CopyTexImage() is called each time the surface texture is used for
-    // drawing.
-    texture->SetLevelImage(GL_TEXTURE_EXTERNAL_OES, 0, this,
-                           gpu::gles2::Texture::UNBOUND);
-  }
-
-  return true;
-}
-
-void StreamTexture::OnFrameAvailable() {
-  has_pending_frame_ = true;
-  if (has_listener_ && owner_stub_) {
-    owner_stub_->channel()->Send(
-        new GpuStreamTextureMsg_FrameAvailable(route_id_));
-  }
-}
-
-gfx::Size StreamTexture::GetSize() {
-  return size_;
-}
-
-unsigned StreamTexture::GetInternalFormat() {
-  return GL_RGBA;
-}
-
-bool StreamTexture::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(StreamTexture, message)
-    IPC_MESSAGE_HANDLER(GpuStreamTextureMsg_StartListening, OnStartListening)
-    IPC_MESSAGE_HANDLER(GpuStreamTextureMsg_EstablishPeer, OnEstablishPeer)
-    IPC_MESSAGE_HANDLER(GpuStreamTextureMsg_SetSize, OnSetSize)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-
-  DCHECK(handled);
-  return handled;
-}
-
-void StreamTexture::OnStartListening() {
-  DCHECK(!has_listener_);
-  has_listener_ = true;
-}
-
-void StreamTexture::OnEstablishPeer(int32_t primary_id, int32_t secondary_id) {
-  if (!owner_stub_)
-    return;
-
-  base::ProcessHandle process = owner_stub_->channel()->GetClientPID();
-
-  gpu::SurfaceTexturePeer::GetInstance()->EstablishSurfaceTexturePeer(
-      process, surface_texture_, primary_id, secondary_id);
-}
-
-bool StreamTexture::BindTexImage(unsigned target) {
-  NOTREACHED();
-  return false;
-}
-
-void StreamTexture::ReleaseTexImage(unsigned target) {
-  NOTREACHED();
-}
-
-bool StreamTexture::CopyTexSubImage(unsigned target,
-                                    const gfx::Point& offset,
-                                    const gfx::Rect& rect) {
-  if (target != GL_TEXTURE_2D)
-    return false;
-
-  if (!owner_stub_ || !surface_texture_.get())
-    return true;
-
-  if (!offset.IsOrigin()) {
-    LOG(ERROR) << "Non-origin offset is not supported";
-    return false;
-  }
-
-  if (rect != gfx::Rect(size_)) {
-    LOG(ERROR) << "Sub-rectangle is not supported";
-    return false;
-  }
-
-  GLint target_texture = 0;
-  glGetIntegerv(GL_TEXTURE_BINDING_2D, &target_texture);
-  DCHECK(target_texture);
-
-  UpdateTexImage();
-
-  if (!framebuffer_) {
-    glGenFramebuffersEXT(1, &framebuffer_);
-
-    // This vertex shader introduces a y flip before applying the stream
-    // texture matrix.  This is required because the stream texture matrix
-    // Android provides is intended to  be used in a y-up coordinate system,
-    // whereas Chromium expects y-down.
-
-    // clang-format off
-    const char kVertexShader[] = STRINGIZE(
-      attribute vec2 a_position;
-      varying vec2 v_texCoord;
-      uniform mat4 u_xform;
-      void main() {
-        gl_Position = vec4(a_position.x, a_position.y, 0.0, 1.0);
-        vec2 uv_untransformed = a_position * vec2(0.5, -0.5) + vec2(0.5, 0.5);
-        v_texCoord = (u_xform * vec4(uv_untransformed, 0.0, 1.0)).xy;
-      }
-    );
-    const char kFragmentShader[] =
-      "#extension GL_OES_EGL_image_external : require\n" STRINGIZE(
-      precision mediump float;
-      uniform samplerExternalOES a_texture;
-      varying vec2 v_texCoord;
-      void main() {
-        gl_FragColor = texture2D(a_texture, v_texCoord);
-      }
-    );
-    // clang-format on
-
-    vertex_buffer_ = gfx::GLHelper::SetupQuadVertexBuffer();
-    vertex_shader_ = gfx::GLHelper::LoadShader(GL_VERTEX_SHADER, kVertexShader);
-    fragment_shader_ =
-        gfx::GLHelper::LoadShader(GL_FRAGMENT_SHADER, kFragmentShader);
-    program_ = gfx::GLHelper::SetupProgram(vertex_shader_, fragment_shader_);
-    gfx::ScopedUseProgram use_program(program_);
-    int sampler_location = glGetUniformLocation(program_, "a_texture");
-    DCHECK_NE(-1, sampler_location);
-    glUniform1i(sampler_location, 0);
-    u_xform_location_ = glGetUniformLocation(program_, "u_xform");
-    DCHECK_NE(-1, u_xform_location_);
-  }
-
-  gfx::ScopedActiveTexture active_texture(GL_TEXTURE0);
-  // UpdateTexImage() call below will bind the surface texture to
-  // TEXTURE_EXTERNAL_OES. This scoped texture binder will restore the current
-  // binding before this function returns.
-  gfx::ScopedTextureBinder texture_binder(GL_TEXTURE_EXTERNAL_OES, texture_id_);
-
-  {
-    gfx::ScopedFrameBufferBinder framebuffer_binder(framebuffer_);
-    gfx::ScopedViewport viewport(0, 0, size_.width(), size_.height());
-    glFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
-                              GL_TEXTURE_2D, target_texture, 0);
-    DCHECK_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE),
-              glCheckFramebufferStatusEXT(GL_FRAMEBUFFER));
-    gfx::ScopedUseProgram use_program(program_);
-
-    glUniformMatrix4fv(u_xform_location_, 1, false, current_matrix_);
-    gfx::GLHelper::DrawQuad(vertex_buffer_);
-
-    // Detach the output texture from the fbo.
-    glFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
-                              GL_TEXTURE_2D, 0, 0);
-  }
-  return true;
-}
-
-bool StreamTexture::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
-                                         int z_order,
-                                         gfx::OverlayTransform transform,
-                                         const gfx::Rect& bounds_rect,
-                                         const gfx::RectF& crop_rect) {
-  NOTREACHED();
-  return false;
-}
-
-void StreamTexture::OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
-                                 uint64_t process_tracing_id,
-                                 const std::string& dump_name) {
-  // TODO(ericrk): Add OnMemoryDump for GLImages. crbug.com/514914
-}
-
-}  // namespace content