Revert "NV12 support for VP8 simulcast"

This reverts commit 76d3e7a.

Reason for revert: Causes multiple Chromium WPT tests to crash, preventing rolls.

Sample failed run:
https://ci.chromium.org/p/chromium/builders/try/win10_chromium_x64_rel_ng/685757?

Sample stack trace:
#0 0x7ff8623fbde9 base::debug::CollectStackTrace()
STDERR: #1 0x7ff862311ca3 [2665012:17:1009/162250.249660:WARNING:timestamp_aligner.cc(131)] too short translated timestamp interval: system time (us) = 3042652370324, interval (us) = 834
STDERR: base::debug::StackTrace::StackTrace()
STDERR: #2 0x7ff8623fb93b base::debug::(anonymous namespace)::StackDumpSignalHandler()
STDERR: #3 0x7ff857a70140 [2665012:17:1009/162250.249947:WARNING:timestamp_aligner.cc(131)] too short translated timestamp interval: system time (us) = 3042652370634, interval (us) = 742
STDERR: (/lib/x86_64-linux-gnu/libpthread-2.31.so+0x1413f)
STDERR: #4 0x7ff85778edb1 gsignal
STDERR: #5 0x7ff857778537 abort
STDERR: #6 0x7ff855d5eee2 [2665012:17:1009/162250.250342:WARNING:timestamp_aligner.cc(131)] too short translated timestamp interval: system time (us) = 3042652371030, interval (us) = 706
STDERR: [2665012:17:1009/162250.250514:WARNING:timestamp_aligner.cc(131)] too short translated timestamp interval: system time (us) = 3042652371204, interval (us) = 963
STDERR: rtc::webrtc_checks_impl::FatalLog()
STDERR: #7 0x7ff855f14e62 webrtc::LibvpxVp8Encoder::PrepareRawImagesForEncoding()
STDERR: #8 0x7ff855f14412 webrtc::LibvpxVp8Encoder::Encode()
STDERR: #9 0x7ff855bae765 webrtc::SimulcastEncoderAdapter::Encode()
STDERR: #10 0x7ff85607d598 webrtc::VideoStreamEncoder::EncodeVideoFrame()
STDERR: #11 0x7ff85607c60d webrtc::VideoStreamEncoder::MaybeEncodeVideoFrame()
STDERR: #12 0x7ff8560816f5 webrtc::webrtc_new_closure_impl::ClosureTask<>::Run()
STDERR: #13 0x7ff855b352b5 (anonymous namespace)::WebrtcTaskQueue::RunTask()
STDERR: #14 0x7ff855b3531e base::internal::Invoker<>::RunOnce()
STDERR: #15 0x7ff86239785b base::TaskAnnotator::RunTask()
STDERR: #16 0x7ff8623c8557 base::internal::TaskTracker::RunSkipOnShutdown()
STDERR: #17 0x7ff8623c7d92 base::internal::TaskTracker::RunTask()
STDERR: #18 0x7ff862415a06 base::internal::TaskTrackerPosix::RunTask()
STDERR: #19 0x7ff8623c75e6 base::internal::TaskTracker::RunAndPopNextTask()
STDERR: #20 0x7ff8623d3a8d base::internal::WorkerThread::RunWorker()
STDERR: #21 0x7ff8623d368d base::internal::WorkerThread::RunPooledWorker()
STDERR: #22 0x7ff862416509 base::(anonymous namespace)::ThreadFunc()
STDERR: #23 0x7ff857a64ea7 start_thread 

Original change's description:
> NV12 support for VP8 simulcast
>
> Tested using video_loopback with generated NV12 frames.
>
> Bug: webrtc:11635, webrtc:11975
> Change-Id: I14b2d663c55a83d80e48e226fcf706cb18903193
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/186722
> Commit-Queue: Evan Shrubsole <eshr@google.com>
> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#32325}

TBR=ilnik@webrtc.org,eshr@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: webrtc:11635
Bug: webrtc:11975
Change-Id: I61c8aed1270bc9c2f7f0577fa5ca717a325f548a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/187484
Reviewed-by: Guido Urdaneta <guidou@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Guido Urdaneta <guidou@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32369}

Author: Guido Urdaneta

modules/video_coding/codecs/vp8/libvpx_vp8_encoder.cc

@@ -497,10 +497,6 @@ int LibvpxVp8Encoder::InitEncode(const VideoCodec* inst,
     return WEBRTC_VIDEO_CODEC_ERR_PARAMETER;
   }
 
-  // Use the previous pixel format to avoid extra image allocations.
-  vpx_img_fmt_t pixel_format =
-      raw_images_.empty() ? VPX_IMG_FMT_I420 : raw_images_[0].fmt;
-
   int retVal = Release();
   if (retVal < 0) {
     return retVal;
@@ -654,8 +650,8 @@ int LibvpxVp8Encoder::InitEncode(const VideoCodec* inst,
   // Creating a wrapper to the image - setting image data to NULL.
   // Actual pointer will be set in encode. Setting align to 1, as it
   // is meaningless (no memory allocation is done here).
-  libvpx_->img_wrap(&raw_images_[0], pixel_format, inst->width, inst->height, 1,
-                    NULL);
+  libvpx_->img_wrap(&raw_images_[0], VPX_IMG_FMT_I420, inst->width,
+                    inst->height, 1, NULL);
 
   // Note the order we use is different from webm, we have lowest resolution
   // at position 0 and they have highest resolution at position 0.
@@ -703,9 +699,10 @@ int LibvpxVp8Encoder::InitEncode(const VideoCodec* inst,
     // Setting alignment to 32 - as that ensures at least 16 for all
     // planes (32 for Y, 16 for U,V). Libvpx sets the requested stride for
     // the y plane, but only half of it to the u and v planes.
-    libvpx_->img_alloc(
-        &raw_images_[i], pixel_format, inst->simulcastStream[stream_idx].width,
-        inst->simulcastStream[stream_idx].height, kVp832ByteAlign);
+    libvpx_->img_alloc(&raw_images_[i], VPX_IMG_FMT_I420,
+                       inst->simulcastStream[stream_idx].width,
+                       inst->simulcastStream[stream_idx].height,
+                       kVp832ByteAlign);
     SetStreamState(stream_bitrates[stream_idx] > 0, stream_idx);
     vpx_configs_[i].rc_target_bitrate = stream_bitrates[stream_idx];
     if (stream_bitrates[stream_idx] > 0) {
@@ -1017,12 +1014,26 @@ int LibvpxVp8Encoder::Encode(const VideoFrame& frame,
     flags[i] = send_key_frame ? VPX_EFLAG_FORCE_KF : EncodeFlags(tl_configs[i]);
   }
 
-  rtc::scoped_refptr<VideoFrameBuffer> input_image = frame.video_frame_buffer();
-  if (input_image->type() != VideoFrameBuffer::Type::kI420 &&
-      input_image->type() != VideoFrameBuffer::Type::kNV12) {
-    input_image = input_image->ToI420();
-  }
-  PrepareRawImagesForEncoding(input_image);
+  rtc::scoped_refptr<I420BufferInterface> input_image =
+      frame.video_frame_buffer()->ToI420();
+  // Since we are extracting raw pointers from |input_image| to
+  // |raw_images_[0]|, the resolution of these frames must match.
+  RTC_DCHECK_EQ(input_image->width(), raw_images_[0].d_w);
+  RTC_DCHECK_EQ(input_image->height(), raw_images_[0].d_h);
+
+  // Image in vpx_image_t format.
+  // Input image is const. VP8's raw image is not defined as const.
+  raw_images_[0].planes[VPX_PLANE_Y] =
+      const_cast<uint8_t*>(input_image->DataY());
+  raw_images_[0].planes[VPX_PLANE_U] =
+      const_cast<uint8_t*>(input_image->DataU());
+  raw_images_[0].planes[VPX_PLANE_V] =
+      const_cast<uint8_t*>(input_image->DataV());
+
+  raw_images_[0].stride[VPX_PLANE_Y] = input_image->StrideY();
+  raw_images_[0].stride[VPX_PLANE_U] = input_image->StrideU();
+  raw_images_[0].stride[VPX_PLANE_V] = input_image->StrideV();
+
   struct CleanUpOnExit {
     explicit CleanUpOnExit(vpx_image_t& raw_image) : raw_image_(raw_image) {}
     ~CleanUpOnExit() {
@@ -1033,6 +1044,22 @@ int LibvpxVp8Encoder::Encode(const VideoFrame& frame,
     vpx_image_t& raw_image_;
   } clean_up_on_exit(raw_images_[0]);
 
+  for (size_t i = 1; i < encoders_.size(); ++i) {
+    // Scale the image down a number of times by downsampling factor
+    libyuv::I420Scale(
+        raw_images_[i - 1].planes[VPX_PLANE_Y],
+        raw_images_[i - 1].stride[VPX_PLANE_Y],
+        raw_images_[i - 1].planes[VPX_PLANE_U],
+        raw_images_[i - 1].stride[VPX_PLANE_U],
+        raw_images_[i - 1].planes[VPX_PLANE_V],
+        raw_images_[i - 1].stride[VPX_PLANE_V], raw_images_[i - 1].d_w,
+        raw_images_[i - 1].d_h, raw_images_[i].planes[VPX_PLANE_Y],
+        raw_images_[i].stride[VPX_PLANE_Y], raw_images_[i].planes[VPX_PLANE_U],
+        raw_images_[i].stride[VPX_PLANE_U], raw_images_[i].planes[VPX_PLANE_V],
+        raw_images_[i].stride[VPX_PLANE_V], raw_images_[i].d_w,
+        raw_images_[i].d_h, libyuv::kFilterBilinear);
+  }
+
   if (send_key_frame) {
     // Adapt the size of the key frame when in screenshare with 1 temporal
     // layer.
@@ -1284,105 +1311,6 @@ int LibvpxVp8Encoder::RegisterEncodeCompleteCallback(
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
-void LibvpxVp8Encoder::PrepareRawImagesForEncoding(
-    const rtc::scoped_refptr<VideoFrameBuffer>& frame) {
-  // Since we are extracting raw pointers from |input_image| to
-  // |raw_images_[0]|, the resolution of these frames must match.
-  RTC_DCHECK_EQ(frame->width(), raw_images_[0].d_w);
-  RTC_DCHECK_EQ(frame->height(), raw_images_[0].d_h);
-  switch (frame->type()) {
-    case VideoFrameBuffer::Type::kI420:
-      return PrepareI420Image(frame->GetI420());
-    case VideoFrameBuffer::Type::kNV12:
-      return PrepareNV12Image(frame->GetNV12());
-    default:
-      RTC_NOTREACHED();
-  }
-}
-
-void LibvpxVp8Encoder::MaybeUpdatePixelFormat(vpx_img_fmt fmt) {
-  RTC_DCHECK(!raw_images_.empty());
-  if (raw_images_[0].fmt == fmt) {
-    RTC_DCHECK(std::all_of(
-        std::next(raw_images_.begin()), raw_images_.end(),
-        [fmt](const vpx_image_t& raw_img) { return raw_img.fmt == fmt; }))
-        << "Not all raw images had the right format!";
-    return;
-  }
-  RTC_LOG(INFO) << "Updating vp8 encoder pixel format to "
-                << (fmt == VPX_IMG_FMT_NV12 ? "NV12" : "I420");
-  for (size_t i = 0; i < raw_images_.size(); ++i) {
-    vpx_image_t& img = raw_images_[i];
-    auto d_w = img.d_w;
-    auto d_h = img.d_h;
-    libvpx_->img_free(&img);
-    // First image is wrapping the input frame, the rest are allocated.
-    if (i == 0) {
-      libvpx_->img_wrap(&img, fmt, d_w, d_h, 1, NULL);
-    } else {
-      libvpx_->img_alloc(&img, fmt, d_w, d_h, kVp832ByteAlign);
-    }
-  }
-}
-
-void LibvpxVp8Encoder::PrepareI420Image(const I420BufferInterface* frame) {
-  RTC_DCHECK(!raw_images_.empty());
-  MaybeUpdatePixelFormat(VPX_IMG_FMT_I420);
-  // Image in vpx_image_t format.
-  // Input image is const. VP8's raw image is not defined as const.
-  raw_images_[0].planes[VPX_PLANE_Y] = const_cast<uint8_t*>(frame->DataY());
-  raw_images_[0].planes[VPX_PLANE_U] = const_cast<uint8_t*>(frame->DataU());
-  raw_images_[0].planes[VPX_PLANE_V] = const_cast<uint8_t*>(frame->DataV());
-
-  raw_images_[0].stride[VPX_PLANE_Y] = frame->StrideY();
-  raw_images_[0].stride[VPX_PLANE_U] = frame->StrideU();
-  raw_images_[0].stride[VPX_PLANE_V] = frame->StrideV();
-
-  for (size_t i = 1; i < encoders_.size(); ++i) {
-    // Scale the image down a number of times by downsampling factor
-    libyuv::I420Scale(
-        raw_images_[i - 1].planes[VPX_PLANE_Y],
-        raw_images_[i - 1].stride[VPX_PLANE_Y],
-        raw_images_[i - 1].planes[VPX_PLANE_U],
-        raw_images_[i - 1].stride[VPX_PLANE_U],
-        raw_images_[i - 1].planes[VPX_PLANE_V],
-        raw_images_[i - 1].stride[VPX_PLANE_V], raw_images_[i - 1].d_w,
-        raw_images_[i - 1].d_h, raw_images_[i].planes[VPX_PLANE_Y],
-        raw_images_[i].stride[VPX_PLANE_Y], raw_images_[i].planes[VPX_PLANE_U],
-        raw_images_[i].stride[VPX_PLANE_U], raw_images_[i].planes[VPX_PLANE_V],
-        raw_images_[i].stride[VPX_PLANE_V], raw_images_[i].d_w,
-        raw_images_[i].d_h, libyuv::kFilterBilinear);
-  }
-}
-
-void LibvpxVp8Encoder::PrepareNV12Image(const NV12BufferInterface* frame) {
-  RTC_DCHECK(!raw_images_.empty());
-  MaybeUpdatePixelFormat(VPX_IMG_FMT_NV12);
-  // Image in vpx_image_t format.
-  // Input image is const. VP8's raw image is not defined as const.
-  raw_images_[0].planes[VPX_PLANE_Y] = const_cast<uint8_t*>(frame->DataY());
-  raw_images_[0].planes[VPX_PLANE_U] = const_cast<uint8_t*>(frame->DataUV());
-  raw_images_[0].planes[VPX_PLANE_V] = raw_images_[0].planes[VPX_PLANE_U] + 1;
-  raw_images_[0].stride[VPX_PLANE_Y] = frame->StrideY();
-  raw_images_[0].stride[VPX_PLANE_U] = frame->StrideUV();
-  raw_images_[0].stride[VPX_PLANE_V] = frame->StrideUV();
-
-  for (size_t i = 1; i < encoders_.size(); ++i) {
-    // Scale the image down a number of times by downsampling factor
-    libyuv::NV12Scale(
-        raw_images_[i - 1].planes[VPX_PLANE_Y],
-        raw_images_[i - 1].stride[VPX_PLANE_Y],
-        raw_images_[i - 1].planes[VPX_PLANE_U],
-        raw_images_[i - 1].stride[VPX_PLANE_U], raw_images_[i - 1].d_w,
-        raw_images_[i - 1].d_h, raw_images_[i].planes[VPX_PLANE_Y],
-        raw_images_[i].stride[VPX_PLANE_Y], raw_images_[i].planes[VPX_PLANE_U],
-        raw_images_[i].stride[VPX_PLANE_U], raw_images_[i].d_w,
-        raw_images_[i].d_h, libyuv::kFilterBilinear);
-    raw_images_[i].planes[VPX_PLANE_V] = raw_images_[i].planes[VPX_PLANE_U] + 1;
-    raw_images_[i].stride[VPX_PLANE_V] = raw_images_[i].stride[VPX_PLANE_U] + 1;
-  }
-}
-
 // static
 LibvpxVp8Encoder::VariableFramerateExperiment
 LibvpxVp8Encoder::ParseVariableFramerateConfig(std::string group_name) {

modules/video_coding/codecs/vp8/libvpx_vp8_encoder.h

@@ -93,12 +93,6 @@ class LibvpxVp8Encoder : public VideoEncoder {
 
   bool UpdateVpxConfiguration(size_t stream_index);
 
-  void PrepareRawImagesForEncoding(
-      const rtc::scoped_refptr<VideoFrameBuffer>& frame);
-  void MaybeUpdatePixelFormat(vpx_img_fmt fmt);
-  void PrepareI420Image(const I420BufferInterface* frame);
-  void PrepareNV12Image(const NV12BufferInterface* frame);
-
   const std::unique_ptr<LibvpxInterface> libvpx_;
 
   const CpuSpeedExperiment experimental_cpu_speed_config_arm_;

modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc

@@ -266,44 +266,6 @@ TEST_F(TestVp8Impl, EncodeFrameAndRelease) {
             encoder_->Encode(NextInputFrame(), nullptr));
 }
 
-TEST_F(TestVp8Impl, EncodeNv12FrameSimulcast) {
-  EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Release());
-  EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
-            encoder_->InitEncode(&codec_settings_, kSettings));
-
-  EncodedImage encoded_frame;
-  CodecSpecificInfo codec_specific_info;
-  input_frame_generator_ = test::CreateSquareFrameGenerator(
-      kWidth, kHeight, test::FrameGeneratorInterface::OutputType::kNV12,
-      absl::nullopt);
-  EncodeAndWaitForFrame(NextInputFrame(), &encoded_frame, &codec_specific_info);
-
-  EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Release());
-  EXPECT_EQ(WEBRTC_VIDEO_CODEC_UNINITIALIZED,
-            encoder_->Encode(NextInputFrame(), nullptr));
-}
-
-TEST_F(TestVp8Impl, EncodeI420FrameAfterNv12Frame) {
-  EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Release());
-  EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
-            encoder_->InitEncode(&codec_settings_, kSettings));
-
-  EncodedImage encoded_frame;
-  CodecSpecificInfo codec_specific_info;
-  input_frame_generator_ = test::CreateSquareFrameGenerator(
-      kWidth, kHeight, test::FrameGeneratorInterface::OutputType::kNV12,
-      absl::nullopt);
-  EncodeAndWaitForFrame(NextInputFrame(), &encoded_frame, &codec_specific_info);
-  input_frame_generator_ = test::CreateSquareFrameGenerator(
-      kWidth, kHeight, test::FrameGeneratorInterface::OutputType::kI420,
-      absl::nullopt);
-  EncodeAndWaitForFrame(NextInputFrame(), &encoded_frame, &codec_specific_info);
-
-  EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Release());
-  EXPECT_EQ(WEBRTC_VIDEO_CODEC_UNINITIALIZED,
-            encoder_->Encode(NextInputFrame(), nullptr));
-}
-
 TEST_F(TestVp8Impl, InitDecode) {
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, decoder_->Release());
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,