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Unified Diff: extensions/renderer/api/display_source/wifi_display/wifi_display_video_encoder.h

Issue 1860083002: [chrome.displaySource][WiFi Display] Media pipeline infrastructure (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Comments from Antony Created 4 years, 8 months ago
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Index: extensions/renderer/api/display_source/wifi_display/wifi_display_video_encoder.h
diff --git a/extensions/renderer/api/display_source/wifi_display/wifi_display_video_encoder.h b/extensions/renderer/api/display_source/wifi_display/wifi_display_video_encoder.h
new file mode 100644
index 0000000000000000000000000000000000000000..9b0b4352af052bd8a4045a47d3d5728b113965e7
--- /dev/null
+++ b/extensions/renderer/api/display_source/wifi_display/wifi_display_video_encoder.h
@@ -0,0 +1,104 @@
+// Copyright 2016 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.
+
+#ifndef EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_VIDEO_ENCODER_H_
+#define EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_VIDEO_ENCODER_H_
+
+#include <string>
+
+#include "base/memory/shared_memory.h"
+#include "base/stl_util.h"
+#include "media/video/video_encode_accelerator.h"
+#include "third_party/wds/src/libwds/public/video_format.h"
+
+namespace extensions {
+
+// This structure represents an encoded video frame.
+struct WiFiDisplayEncodedFrame {
+ const uint8_t* bytes() const {
+ return reinterpret_cast<uint8_t*>(
+ string_as_array(const_cast<std::string*>(&data)));
+ }
+ uint8_t* mutable_bytes() {
+ return reinterpret_cast<uint8_t*>(string_as_array(&data));
+ }
+
+ base::TimeTicks pts; // Presentation timestamp.
+ base::TimeTicks dts; // Decoder timestamp.
+ std::string data;
+ bool key_frame;
+};
+
+// This interface represents H.264 video encoder used by the
+// Wi-Fi Display media pipeline.
+// Threading: the client code should belong to a single thread.
+class WiFiDisplayVideoEncoder :
+ public base::RefCountedThreadSafe<WiFiDisplayVideoEncoder> {
+ public:
+ using EncodedFrameCallback =
+ base::Callback<void(const WiFiDisplayEncodedFrame&)>;
+
+ using VideoEncoderCallback =
+ base::Callback<void(scoped_refptr<WiFiDisplayVideoEncoder>)>;
+
+ using ReceiveVideoEncodeAcceleratorCallback =
+ base::Callback<void(scoped_refptr<base::SingleThreadTaskRunner>,
+ std::unique_ptr<media::VideoEncodeAccelerator>)>;
+ using CreateVideoEncodeAcceleratorCallback =
+ base::Callback<void(const ReceiveVideoEncodeAcceleratorCallback&)>;
+
+ using ReceiveEncodeMemoryCallback =
+ base::Callback<void(std::unique_ptr<base::SharedMemory>)>;
+ using CreateEncodeMemoryCallback =
+ base::Callback<void(size_t size, const ReceiveEncodeMemoryCallback&)>;
+
+ struct InitParameters {
+ InitParameters();
+ ~InitParameters();
+ gfx::Size frame_size;
+ int frame_rate;
+ int bit_rate;
+ wds::H264Profile profile;
+ wds::H264Level level;
+ // VEA-specific parameters.
+ CreateEncodeMemoryCallback create_memory_callback;
+ CreateVideoEncodeAcceleratorCallback vea_create_callback;
+ };
+
+ // A factory method that creates a new encoder instance from the given
+ // |params|, the encoder instance is returned as an argument of
+ // |result_callback| ('nullptr' argument means encoder creation failure).
+ static void Create(
+ const InitParameters& params,
+ const VideoEncoderCallback& encoder_callback);
+
+ // Encodes the given raw frame. The resulting encoded frame is passed
+ // as an |encoded_callback|'s argument which is set via 'SetCallbacks'
+ // method.
+ virtual void InsertRawVideoFrame(
+ const scoped_refptr<media::VideoFrame>& video_frame,
ddorwin 2016/04/08 17:41:31 ICWYU: media/base/video_frame.h
Mikhail 2016/04/08 19:28:00 Done.
+ base::TimeTicks reference_time) = 0;
+
+ // Requests the next encoded frame to be an instantaneous decoding refresh
+ // (IDR) picture.
+ virtual void RequestIDRPicture() = 0;
+
+ // Sets callbacks for the obtained encoder instance:
+ // |encoded_callback| is invoked to return the next encoded frame
+ // |error_callback| is invoked to report a fatal encoder error
+ void SetCallbacks(const EncodedFrameCallback& encoded_callback,
+ const base::Closure& error_callback);
+
+ protected:
+ friend class base::RefCountedThreadSafe<WiFiDisplayVideoEncoder>;
+ WiFiDisplayVideoEncoder();
+ virtual ~WiFiDisplayVideoEncoder();
+
+ EncodedFrameCallback encoded_callback_;
+ base::Closure error_callback_;
+};
+
+} // namespace extensions
+
+#endif // EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_VIDEO_ENCODER_H_

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