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// Copyright 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/media/gl_surface_capturer.h"
#include "base/message_loop/message_loop_proxy.h"
#include "content/common/gpu/gpu_channel.h"
#include "content/common/gpu/gpu_messages.h"
#include "ipc/ipc_message_macros.h"
namespace content {
namespace {
enum {
kMaxCaptureSize = 4096,
};
} // anonymous namespace
GLSurfaceCapturer::GLSurfaceCapturer(int32 route_id, GpuCommandBufferStub* stub)
: thread_checker_(),
route_id_(route_id),
stub_(stub),
output_format_(media::VideoFrame::INVALID) {
DCHECK(thread_checker_.CalledOnValidThread());
stub_->AddDestructionObserver(this);
stub_->channel()->AddRoute(route_id_, this);
}
GLSurfaceCapturer::~GLSurfaceCapturer() {
DCHECK(thread_checker_.CalledOnValidThread());
if (surface_capturer_)
surface_capturer_.release()->Destroy();
stub_->channel()->RemoveRoute(route_id_);
stub_->RemoveDestructionObserver(this);
}
bool GLSurfaceCapturer::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(GLSurfaceCapturer, message)
IPC_MESSAGE_HANDLER(SurfaceCapturerMsg_Initialize, OnInitialize)
IPC_MESSAGE_HANDLER(SurfaceCapturerMsg_TryCapture, OnTryCapture)
IPC_MESSAGE_HANDLER(SurfaceCapturerMsg_CopyCaptureToVideoFrame,
OnCopyCaptureToVideoFrame)
IPC_MESSAGE_HANDLER(SurfaceCapturerMsg_Destroy, OnDestroy)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void GLSurfaceCapturer::NotifyCaptureParameters(const gfx::Size& buffer_size,
const gfx::Rect& visible_rect) {
DCHECK(thread_checker_.CalledOnValidThread());
if (buffer_size.width() < 1 || buffer_size.width() > kMaxCaptureSize ||
buffer_size.height() < 1 || buffer_size.height() > kMaxCaptureSize ||
visible_rect.x() < 0 || visible_rect.x() > kMaxCaptureSize - 1 ||
visible_rect.y() < 0 || visible_rect.y() > kMaxCaptureSize - 1 ||
visible_rect.width() < 1 || visible_rect.width() > kMaxCaptureSize ||
visible_rect.height() < 1 || visible_rect.height() > kMaxCaptureSize) {
DLOG(ERROR) << "NotifyCaptureParameters(): parameters out of bounds: "
"buffer_size=" << buffer_size.ToString()
<< ", visible_rect=" << visible_rect.ToString();
NotifyError(SurfaceCapturer::kInvalidArgumentError);
return;
}
output_buffer_size_ = buffer_size;
output_visible_rect_ = visible_rect;
Send(new SurfaceCapturerHostMsg_NotifyCaptureParameters(
route_id_, buffer_size, visible_rect));
}
void GLSurfaceCapturer::NotifyCopyCaptureDone(
const scoped_refptr<media::VideoFrame>& frame) {
DCHECK(thread_checker_.CalledOnValidThread());
FrameIdMap::iterator iter = frame_id_map_.find(frame);
if (iter == frame_id_map_.end()) {
DLOG(ERROR) << "NotifyCopyCaptureDone(): invalid frame";
NotifyError(SurfaceCapturer::kInvalidArgumentError);
return;
}
Send(new SurfaceCapturerHostMsg_NotifyCopyCaptureDone(route_id_,
iter->second));
frame_id_map_.erase(iter);
}
void GLSurfaceCapturer::NotifyError(SurfaceCapturer::Error error) {
DCHECK(thread_checker_.CalledOnValidThread());
Send(new SurfaceCapturerHostMsg_NotifyError(route_id_, error));
}
void GLSurfaceCapturer::OnWillDestroyStub() {
DCHECK(thread_checker_.CalledOnValidThread());
delete this;
}
void GLSurfaceCapturer::OnInitialize(media::VideoFrame::Format format) {
DVLOG(2) << "OnInitialize(): format=" << format;
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(!surface_capturer_);
// TODO(sheu): actually create a surface capturer.
if (!surface_capturer_) {
NOTIMPLEMENTED() << "OnInitialize(): GL surface capturing not available";
NotifyError(SurfaceCapturer::kPlatformFailureError);
return;
}
output_format_ = format;
surface_capturer_->Initialize(output_format_);
}
void GLSurfaceCapturer::OnTryCapture() {
DVLOG(3) << "OnTryCapture()";
DCHECK(thread_checker_.CalledOnValidThread());
if (!surface_capturer_)
return;
surface_capturer_->TryCapture();
}
static void DeleteShm(scoped_ptr<base::SharedMemory> shm) {
// Just let shm fall out of scope.
}
void GLSurfaceCapturer::OnCopyCaptureToVideoFrame(
int32 frame_id,
base::SharedMemoryHandle buffer_shm,
uint32_t buffer_size) {
DVLOG(3) << "OnCopyCaptureToVideoFrame(): frame_id=" << frame_id
<< ", buffer_size=" << buffer_size;
DCHECK(thread_checker_.CalledOnValidThread());
if (!surface_capturer_)
return;
if (frame_id < 0) {
DLOG(ERROR) << "OnCopyCaptureToVideoFrame(): invalid frame_id=" << frame_id;
NotifyError(SurfaceCapturer::kPlatformFailureError);
return;
}
scoped_ptr<base::SharedMemory> shm(new base::SharedMemory(buffer_shm, false));
if (!shm->Map(buffer_size)) {
DLOG(ERROR) << "OnCopyCaptureToVideoFrame(): could not map "
"frame_id=" << frame_id;
NotifyError(SurfaceCapturer::kPlatformFailureError);
return;
}
scoped_refptr<media::VideoFrame> frame =
media::VideoFrame::WrapExternalSharedMemory(
output_format_,
output_buffer_size_,
output_visible_rect_,
output_visible_rect_.size(),
reinterpret_cast<uint8*>(shm->memory()),
buffer_size,
buffer_shm,
base::TimeDelta(),
base::Bind(&DeleteShm, base::Passed(&shm)));
if (!frame) {
DLOG(ERROR) << "OnCopyCaptureToVideoFrame(): could not create frame for"
"frame_id=" << frame_id;
NotifyError(SurfaceCapturer::kPlatformFailureError);
return;
}
frame_id_map_[frame] = frame_id;
surface_capturer_->CopyCaptureToVideoFrame(frame);
}
void GLSurfaceCapturer::OnDestroy() {
DVLOG(2) << "OnDestroy()";
DCHECK(thread_checker_.CalledOnValidThread());
delete this;
}
void GLSurfaceCapturer::Send(IPC::Message* message) {
DCHECK(thread_checker_.CalledOnValidThread());
uint32 type = message->type();
if (!stub_->channel()->Send(message)) {
DLOG(ERROR) << "Send(): send failed: message->type()=" << type;
NotifyError(SurfaceCapturer::kPlatformFailureError);
}
}
} // namespace content
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