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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_CHROMEOS_CAMERA_MOJO_MJPEG_DECODE_ACCELERATOR_H_
#define COMPONENTS_CHROMEOS_CAMERA_MOJO_MJPEG_DECODE_ACCELERATOR_H_
#include <stdint.h>
#include "base/memory/raw_ptr.h"
#include "components/chromeos_camera/common/mjpeg_decode_accelerator.mojom.h"
#include "components/chromeos_camera/mjpeg_decode_accelerator.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
namespace base {
class SequencedTaskRunner;
}
namespace chromeos_camera {
// A MjpegDecodeAccelerator, for use in the browser process, that proxies to a
// chromeos_camera::mojom::MjpegDecodeAccelerator. Created on the owner's
// thread, otherwise operating and deleted on |io_task_runner|.
class MojoMjpegDecodeAccelerator {
public:
MojoMjpegDecodeAccelerator(
scoped_refptr<base::SequencedTaskRunner> io_task_runner,
mojo::PendingRemote<chromeos_camera::mojom::MjpegDecodeAccelerator>
jpeg_decoder);
MojoMjpegDecodeAccelerator(const MojoMjpegDecodeAccelerator&) = delete;
MojoMjpegDecodeAccelerator& operator=(const MojoMjpegDecodeAccelerator&) =
delete;
~MojoMjpegDecodeAccelerator();
// MjpegDecodeAccelerator implementation.
// |client| is called on the IO thread, but is never called into after the
// MojoMjpegDecodeAccelerator is destroyed.
void InitializeAsync(MjpegDecodeAccelerator::Client* client,
MjpegDecodeAccelerator::InitCB init_cb);
void Decode(media::BitstreamBuffer bitstream_buffer,
media::VideoPixelFormat format,
const gfx::Size& coded_size,
base::UnsafeSharedMemoryRegion output_region);
bool IsSupported();
private:
void OnInitializeDone(MjpegDecodeAccelerator::InitCB init_cb,
MjpegDecodeAccelerator::Client* client,
bool success);
void OnDecodeAck(int32_t bitstream_buffer_id,
MjpegDecodeAccelerator::Error error);
void OnLostConnectionToJpegDecoder();
scoped_refptr<base::SequencedTaskRunner> io_task_runner_;
raw_ptr<MjpegDecodeAccelerator::Client> client_ = nullptr;
// Used to safely pass the
// chromeos_mojo::Remote<camera::mojom::MjpegDecodeAccelerator> from one
// thread to another. It is set in the constructor and consumed in
// InitializeAsync().
// TODO(mcasas): s/jpeg_decoder_/jda_/ https://crbug.com/699255.
mojo::PendingRemote<chromeos_camera::mojom::MjpegDecodeAccelerator>
jpeg_decoder_remote_;
mojo::Remote<chromeos_camera::mojom::MjpegDecodeAccelerator> jpeg_decoder_;
};
} // namespace chromeos_camera
#endif // COMPONENTS_CHROMEOS_CAMERA_MOJO_MJPEG_DECODE_ACCELERATOR_H_
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