Move usage of QualityScaler to ViEEncoder.

webrtc/sdk/objc/Framework/Classes/h264_video_toolbox_encoder.mm

 /*
  *  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.
  *
  */
@@ skipping 342 matching lines @@
 
 H264VideoToolboxEncoder::~H264VideoToolboxEncoder() {
   DestroyCompressionSession();
 }
 
 int H264VideoToolboxEncoder::InitEncode(const VideoCodec* codec_settings,
                                         int number_of_cores,
                                         size_t max_payload_size) {
   RTC_DCHECK(codec_settings);
   RTC_DCHECK_EQ(codec_settings->codecType, kVideoCodecH264);
-  {
-    rtc::CritScope lock(&quality_scaler_crit_);
-    quality_scaler_.Init(internal::kLowH264QpThreshold,
-                         internal::kHighH264QpThreshold,
-                         codec_settings->startBitrate, codec_settings->width,
-                         codec_settings->height, codec_settings->maxFramerate);
-    QualityScaler::Resolution res = quality_scaler_.GetScaledResolution();
-    // TODO(tkchin): We may need to enforce width/height dimension restrictions
-    // to match what the encoder supports.
-    width_ = res.width;
-    height_ = res.height;
-  }
+
+  width_ = codec_settings->width;
+  height_ = codec_settings->height;
   // We can only set average bitrate on the HW encoder.
   target_bitrate_bps_ = codec_settings->startBitrate;
   bitrate_adjuster_.SetTargetBitrateBps(target_bitrate_bps_);
 
   // TODO(tkchin): Try setting payload size via
   // kVTCompressionPropertyKey_MaxH264SliceBytes.
 
   return ResetCompressionSession();
 }
 
 int H264VideoToolboxEncoder::Encode(
     const VideoFrame& frame,
     const CodecSpecificInfo* codec_specific_info,
     const std::vector<FrameType>* frame_types) {
+  // |input_frame| size should always match codec settings.
+  RTC_DCHECK_EQ(frame.width(), width_);
+  RTC_DCHECK_EQ(frame.height(), height_);
   RTC_DCHECK(!frame.IsZeroSize());
   if (!callback_ || !compression_session_) {
     return WEBRTC_VIDEO_CODEC_UNINITIALIZED;
   }
 #if defined(WEBRTC_IOS)
   if (!RTCIsUIApplicationActive()) {
     // Ignore all encode requests when app isn't active. In this state, the
     // hardware encoder has been invalidated by the OS.
     return WEBRTC_VIDEO_CODEC_OK;
   }
 #endif
   bool is_keyframe_required = false;
 
-  quality_scaler_.OnEncodeFrame(frame.width(), frame.height());
-  const QualityScaler::Resolution scaled_res =
-      quality_scaler_.GetScaledResolution();
-
-  if (scaled_res.width != width_ || scaled_res.height != height_) {
-    width_ = scaled_res.width;
-    height_ = scaled_res.height;
-    int ret = ResetCompressionSession();
-    if (ret < 0)
-      return ret;
-  }
-
   // Get a pixel buffer from the pool and copy frame data over.
   CVPixelBufferPoolRef pixel_buffer_pool =
       VTCompressionSessionGetPixelBufferPool(compression_session_);
 #if defined(WEBRTC_IOS)
   if (!pixel_buffer_pool) {
     // Kind of a hack. On backgrounding, the compression session seems to get
     // invalidated, which causes this pool call to fail when the application
     // is foregrounded and frames are being sent for encoding again.
     // Resetting the session when this happens fixes the issue.
     // In addition we request a keyframe so video can recover quickly.
@@ skipping 26 matching lines @@
       if (!core_video_frame_buffer->CropAndScaleTo(&nv12_scale_buffer_,
                                                    pixel_buffer)) {
         return WEBRTC_VIDEO_CODEC_ERROR;
       }
     }
   } else {
     pixel_buffer = internal::CreatePixelBuffer(pixel_buffer_pool);
     if (!pixel_buffer) {
       return WEBRTC_VIDEO_CODEC_ERROR;
     }
-    // TODO(magjed): Optimize by merging scaling and NV12 pixel buffer
-    // conversion once libyuv::MergeUVPlanes is available.
-    rtc::scoped_refptr<VideoFrameBuffer> scaled_i420_buffer =
-        quality_scaler_.GetScaledBuffer(frame.video_frame_buffer());
-    if (!internal::CopyVideoFrameToPixelBuffer(scaled_i420_buffer,
+    RTC_DCHECK(pixel_buffer);
+    if (!internal::CopyVideoFrameToPixelBuffer(frame.video_frame_buffer(),
                                                pixel_buffer)) {
       LOG(LS_ERROR) << "Failed to copy frame data.";
       CVBufferRelease(pixel_buffer);
       return WEBRTC_VIDEO_CODEC_ERROR;
     }
   }
 
   // Check if we need a keyframe.
   if (!is_keyframe_required && frame_types) {
     for (auto frame_type : *frame_types) {
@@ skipping 35 matching lines @@
   }
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
 int H264VideoToolboxEncoder::RegisterEncodeCompleteCallback(
     EncodedImageCallback* callback) {
   callback_ = callback;
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
-void H264VideoToolboxEncoder::OnDroppedFrame() {
-  rtc::CritScope lock(&quality_scaler_crit_);
-  quality_scaler_.ReportDroppedFrame();
-}
-
 int H264VideoToolboxEncoder::SetChannelParameters(uint32_t packet_loss,
                                                   int64_t rtt) {
   // Encoder doesn't know anything about packet loss or rtt so just return.
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
 int H264VideoToolboxEncoder::SetRates(uint32_t new_bitrate_kbit,
                                       uint32_t frame_rate) {
   target_bitrate_bps_ = 1000 * new_bitrate_kbit;
   bitrate_adjuster_.SetTargetBitrateBps(target_bitrate_bps_);
   SetBitrateBps(bitrate_adjuster_.GetAdjustedBitrateBps());
-
-  rtc::CritScope lock(&quality_scaler_crit_);
-  quality_scaler_.ReportFramerate(frame_rate);
-
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
 int H264VideoToolboxEncoder::Release() {
   // Need to reset so that the session is invalidated and won't use the
   // callback anymore. Do not remove callback until the session is invalidated
   // since async encoder callbacks can occur until invalidation.
   int ret = ResetCompressionSession();
   callback_ = nullptr;
   return ret;
@@ skipping 152 matching lines @@
     int32_t height,
     int64_t render_time_ms,
     uint32_t timestamp,
     VideoRotation rotation) {
   if (status != noErr) {
     LOG(LS_ERROR) << "H264 encode failed.";
     return;
   }
   if (info_flags & kVTEncodeInfo_FrameDropped) {
     LOG(LS_INFO) << "H264 encode dropped frame.";
-    rtc::CritScope lock(&quality_scaler_crit_);
-    quality_scaler_.ReportDroppedFrame();
     return;
   }
 
   bool is_keyframe = false;
   CFArrayRef attachments =
       CMSampleBufferGetSampleAttachmentsArray(sample_buffer, 0);
   if (attachments != nullptr && CFArrayGetCount(attachments)) {
     CFDictionaryRef attachment =
         static_cast<CFDictionaryRef>(CFArrayGetValueAtIndex(attachments, 0));
     is_keyframe =
@@ skipping 21 matching lines @@
   frame._encodedWidth = width;
   frame._encodedHeight = height;
   frame._completeFrame = true;
   frame._frameType =
       is_keyframe ? webrtc::kVideoFrameKey : webrtc::kVideoFrameDelta;
   frame.capture_time_ms_ = render_time_ms;
   frame._timeStamp = timestamp;
   frame.rotation_ = rotation;
 
   h264_bitstream_parser_.ParseBitstream(buffer->data(), buffer->size());
-  int qp;
-  if (h264_bitstream_parser_.GetLastSliceQp(&qp)) {
-    rtc::CritScope lock(&quality_scaler_crit_);
-    quality_scaler_.ReportQP(qp);
-    frame.qp_ = qp;
-  }
+  h264_bitstream_parser_.GetLastSliceQp(&frame.qp_);
 
-  EncodedImageCallback::Result result =
+  EncodedImageCallback::Result res =
       callback_->OnEncodedImage(frame, &codec_specific_info, header.get());
-  if (result.error != EncodedImageCallback::Result::OK) {
-    LOG(LS_ERROR) << "Encode callback failed: " << result.error;
+  if (res.error != EncodedImageCallback::Result::OK) {
+    LOG(LS_ERROR) << "Encode callback failed: " << res.error;
     return;
   }
   bitrate_adjuster_.Update(frame._size);
 }
 
+VideoEncoder::ScalingSettings H264VideoToolboxEncoder::GetScalingSettings()
+    const {
+  return VideoEncoder::ScalingSettings(true, internal::kLowH264QpThreshold,
+                                       internal::kHighH264QpThreshold);
+}
 }  // namespace webrtc