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// Copyright (c) 2012 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 "ui/gl/async_pixel_transfer_delegate_stub.h"
#include "base/shared_memory.h"
#include "build/build_config.h"
#include "ui/gl/gl_bindings.h"
using base::SharedMemory;
using base::SharedMemoryHandle;
namespace {
// Gets the address of the data from shared memory.
void* GetAddress(SharedMemory* shared_memory,
uint32 shm_size,
uint32 shm_data_offset,
uint32 shm_data_size) {
// Memory bounds have already been validated, so there
// is just DCHECKS here.
DCHECK(shared_memory);
DCHECK(shared_memory->memory());
DCHECK_LE(shm_data_offset + shm_data_size, shm_size);
return static_cast<int8*>(shared_memory->memory()) + shm_data_offset;
}
} // namespace
namespace gfx {
#if !defined(OS_ANDROID)
scoped_ptr<AsyncPixelTransferDelegate>
AsyncPixelTransferDelegate::Create(gfx::GLContext* context) {
return AsyncPixelTransferDelegateStub::Create(context);
}
#endif
scoped_ptr<AsyncPixelTransferDelegate>
AsyncPixelTransferDelegateStub::Create(gfx::GLContext* context) {
return make_scoped_ptr(
static_cast<AsyncPixelTransferDelegate*>(
new AsyncPixelTransferDelegateStub()));
}
AsyncTransferStateStub::AsyncTransferStateStub(GLuint texture_id) {
static const AsyncTexImage2DParams zero_params = {0, 0, 0, 0, 0, 0, 0, 0};
late_bind_define_params_ = zero_params;
needs_late_bind_ = false;
}
AsyncTransferStateStub::~AsyncTransferStateStub() {
}
bool AsyncTransferStateStub::TransferIsInProgress() {
return false;
}
void AsyncTransferStateStub::BindTransfer(AsyncTexImage2DParams* out_params) {
DCHECK(out_params);
DCHECK(needs_late_bind_);
*out_params = late_bind_define_params_;
needs_late_bind_ = false;
}
AsyncPixelTransferDelegateStub::AsyncPixelTransferDelegateStub()
: texture_upload_count_(0) {
}
AsyncPixelTransferDelegateStub::~AsyncPixelTransferDelegateStub() {
}
AsyncPixelTransferState*
AsyncPixelTransferDelegateStub::CreateRawPixelTransferState(
GLuint texture_id) {
return static_cast<AsyncPixelTransferState*>(
new AsyncTransferStateStub(texture_id));
}
void AsyncPixelTransferDelegateStub::AsyncNotifyCompletion(
const base::Closure& task) {
task.Run();
}
void AsyncPixelTransferDelegateStub::AsyncTexImage2D(
AsyncPixelTransferState* transfer_state,
const AsyncTexImage2DParams& tex_params,
const AsyncMemoryParams& mem_params) {
// Save the define params to return later during deferred
// binding of the transfer texture.
DCHECK(transfer_state);
AsyncTransferStateStub* state =
static_cast<AsyncTransferStateStub*>(transfer_state);
// We don't actually need a late bind since this stub does
// everything synchronously, but this tries to be similar
// as an async implementation.
state->needs_late_bind_ = true;
state->late_bind_define_params_ = tex_params;
void* data = GetAddress(mem_params.shared_memory,
mem_params.shm_size,
mem_params.shm_data_offset,
mem_params.shm_data_size);
glTexImage2D(
tex_params.target,
tex_params.level,
tex_params.internal_format,
tex_params.width,
tex_params.height,
tex_params.border,
tex_params.format,
tex_params.type,
data);
}
void AsyncPixelTransferDelegateStub::AsyncTexSubImage2D(
AsyncPixelTransferState* transfer_state,
const AsyncTexSubImage2DParams& tex_params,
const AsyncMemoryParams& mem_params) {
void* data = GetAddress(mem_params.shared_memory,
mem_params.shm_size,
mem_params.shm_data_offset,
mem_params.shm_data_size);
DCHECK(transfer_state);
AsyncTransferStateStub* state =
static_cast<AsyncTransferStateStub*>(transfer_state);
DCHECK(!state->needs_late_bind_);
base::TimeTicks begin_time(base::TimeTicks::HighResNow());
glTexSubImage2D(
tex_params.target,
tex_params.level,
tex_params.xoffset,
tex_params.yoffset,
tex_params.width,
tex_params.height,
tex_params.format,
tex_params.type,
data);
texture_upload_count_++;
total_texture_upload_time_ += base::TimeTicks::HighResNow() - begin_time;
}
uint32 AsyncPixelTransferDelegateStub::GetTextureUploadCount() {
return texture_upload_count_;
}
base::TimeDelta AsyncPixelTransferDelegateStub::GetTotalTextureUploadTime() {
return total_texture_upload_time_;
}
} // namespace gfx
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