Adding third_party/openh264 build files for encoding

third_party/openh264/testing/h264_encoder_impl.h

+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ *
+ */
+
+// TODO(hbos): This is essentially a copy of an encoder class in WebRTC that as
+// of this statement has not yet landed, but that I want to have accessible in
+// Chromium before that CL lands. This is because I use it in order to validate
+// the build files for OpenH264 and the WebRTC encoder/decoder CL cannot land
+// until I can build OpenH264 from source. Once the build files are stable I
+// will land both CLs and remove this copy of the encoder.
+
+#ifndef OPENH264_TESTING_H264_ENCODER_IMPL_H_
+#define OPENH264_TESTING_H264_ENCODER_IMPL_H_
+
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/modules/video_coding/codecs/h264/include/h264.h"
+
+#include <vector>
+
+class ISVCEncoder;
+
+using webrtc::CodecSpecificInfo;
+using webrtc::EncodedImage;
+using webrtc::EncodedImageCallback;
+using webrtc::FrameType;
+using webrtc::VideoCodec;
+using webrtc::VideoEncoder;
+using webrtc::VideoFrame;
+
+namespace openh264 {
+
+class H264EncoderImpl : public webrtc::H264Encoder {
+ public:
+  H264EncoderImpl();
+  ~H264EncoderImpl() override;
+
+  // |number_of_cores| and |max_payload_size| are ignored.
+  // The following members of |codec_settings| are used. The rest are ignored.
+  // - codecType (must be kVideoCodecH264)
+  // - targetBitrate
+  // - maxFramerate
+  // - width
+  // - height
+  int32_t InitEncode(const VideoCodec* codec_settings,
+                     int32_t /*number_of_cores*/,
+                     size_t /*max_payload_size*/) override;
+  int32_t Release() override;
+
+  int32_t RegisterEncodeCompleteCallback(

[torbjorng, 2015/11/18 14:41:09]

Nit: Unneeded linebreak. :-)

[hbos_chromium, 2015/11/18 15:55:04]

(Actually it is needed. From "int" to ";" it's exactly 80 chars but there's also
2 spaces before "int")
:-)

+      EncodedImageCallback* callback) override;
+  int32_t SetRates(uint32_t bitrate, uint32_t framerate) override;
+
+  // The result of encoding - an EncodedImage and RTPFragmentationHeader - are
+  // passed to the encode complete callback.
+  int32_t Encode(const VideoFrame& frame,
+                 const CodecSpecificInfo* codec_specific_info,
+                 const std::vector<FrameType>* frame_types) override;
+
+  bool IsInitialized();
+
+  // Unsupported / Do nothing.
+  int32_t SetChannelParameters(uint32_t packet_loss, int64_t rtt) override;
+  int32_t SetPeriodicKeyFrames(bool enable) override;
+  void OnDroppedFrame() override;
+
+ private:
+  ISVCEncoder* openh264_encoder_;
+  VideoCodec codec_settings_;
+
+  EncodedImage encoded_image_;
+  rtc::scoped_ptr<uint8_t[]> encoded_image_buffer_;
+  EncodedImageCallback* encoded_image_callback_;
+};
+
+}  // namespace openh264
+
+#endif  // OPENH264_TESTING_H264_ENCODER_IMPL_H_