video_capture_device_client.h | Explore in Territory

// 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 MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_CLIENT_H_
#define MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_CLIENT_H_

#include <stddef.h>
#include <stdint.h>

#include <memory>
#include <vector>

#include "base/feature_list.h"
#include "base/memory/scoped_refptr.h"
#include "base/threading/thread_collision_warner.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "media/capture/capture_export.h"
#include "media/capture/mojom/video_effects_manager.mojom.h"
#include "media/capture/video/video_capture_device.h"
#include "media/capture/video/video_frame_receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/video_effects/public/cpp/buildflags.h"
#include "services/video_effects/public/mojom/video_effects_processor.mojom-forward.h"

#if BUILDFLAG(ENABLE_VIDEO_EFFECTS)
#include "media/capture/video/video_capture_effects_processor.h"
#endif  // BUILDFLAG(ENABLE_VIDEO_EFFECTS)

namespace media {
class VideoCaptureBufferPool;
class VideoFrameReceiver;
class VideoCaptureJpegDecoder;

VideoCaptureJpegDecoderFactoryCB;

#if BUILDFLAG(IS_MAC)
CAPTURE_EXPORT BASE_DECLARE_FEATURE(kFallbackToSharedMemoryIfNotNv12OnMac);
#endif

// Structure used to inject dependencies required for the
// `VideoCaptureDeviceClient` to apply video effects.
class CAPTURE_EXPORT VideoEffectsContext { … };

// Implementation of VideoCaptureDevice::Client that uses a buffer pool
// to provide buffers and converts incoming data to the I420 format for
// consumption by a given VideoFrameReceiver. If
// |optional_jpeg_decoder_factory_callback| is provided, the
// VideoCaptureDeviceClient will attempt to use it for decoding of MJPEG frames.
// Otherwise, it will use libyuv to perform MJPEG to I420 conversion in
// software.
//
// Methods of this class may be called from any thread, and in practice will
// often be called on some auxiliary thread depending on the platform and the
// device type; including, for example, the DirectShow thread on Windows, the
// v4l2_thread on Linux, and the UI thread for tab capture.
// The owner is responsible for making sure that the instance outlives these
// calls.
class CAPTURE_EXPORT VideoCaptureDeviceClient
    : public VideoCaptureDevice::Client { … };

}  // namespace media

#endif  // MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_CLIENT_H_
chromium/media/capture/video/video_capture_device_client.h
