media/gpu/vp9_decoder.cc - cobalt - Git at Google

 // Copyright 2015 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.

 #include "media/gpu/vp9_decoder.h"

 #include <memory>

 #include "base/bind.h"
 #include "base/feature_list.h"
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "build/chromeos_buildflags.h"
 #include "media/base/limits.h"
 #include "media/base/media_switches.h"
 #include "media/gpu/vp9_decoder.h"

 namespace media {

 namespace {
 std::vector<uint32_t> GetSpatialLayerFrameSize(
     const DecoderBuffer& decoder_buffer) {
 #if defined(ARCH_CPU_X86_FAMILY) && BUILDFLAG(IS_CHROMEOS_ASH)
   const uint32_t* cue_data =
       reinterpret_cast<const uint32_t*>(decoder_buffer.side_data());
   if (!cue_data) {
     return {};
   }
   if (!base::FeatureList::IsEnabled(media::kVaapiVp9kSVCHWDecoding)) {
     DLOG(ERROR) << "Vp9Parser doesn't support parsing SVC stream";
     return {};
   }

   size_t num_of_layers = decoder_buffer.side_data_size() / sizeof(uint32_t);
   if (num_of_layers > 3u) {
     DLOG(WARNING) << "The maximum number of spatial layers in VP9 is three";
     return {};
   }
   return std::vector<uint32_t>(cue_data, cue_data + num_of_layers);
 #else
   return {};
 #endif  // defined(ARCH_CPU_X86_FAMILY) && BUILDFLAG(IS_CHROMEOS_ASH)
 }

 VideoCodecProfile VP9ProfileToVideoCodecProfile(uint8_t profile) {
   switch (profile) {
     case 0:
       return VP9PROFILE_PROFILE0;
     case 1:
       return VP9PROFILE_PROFILE1;
     case 2:
       return VP9PROFILE_PROFILE2;
     case 3:
       return VP9PROFILE_PROFILE3;
     default:
       return VIDEO_CODEC_PROFILE_UNKNOWN;
   }
 }

 bool IsValidBitDepth(uint8_t bit_depth, VideoCodecProfile profile) {
   // Spec 7.2.
   switch (profile) {
     case VP9PROFILE_PROFILE0:
     case VP9PROFILE_PROFILE1:
       return bit_depth == 8u;
     case VP9PROFILE_PROFILE2:
     case VP9PROFILE_PROFILE3:
       return bit_depth == 10u || bit_depth == 12u;
     default:
       NOTREACHED();
       return false;
   }
 }

 bool IsYUV420Sequence(const Vp9FrameHeader& frame_header) {
   // Spec 7.2.2
   return frame_header.subsampling_x == 1u && frame_header.subsampling_y == 1u;
 }
 }  // namespace

 VP9Decoder::VP9Accelerator::VP9Accelerator() {}

 VP9Decoder::VP9Accelerator::~VP9Accelerator() {}

 VP9Decoder::VP9Decoder(std::unique_ptr<VP9Accelerator> accelerator,
                        VideoCodecProfile profile,
                        const VideoColorSpace& container_color_space)
     : state_(kNeedStreamMetadata),
       container_color_space_(container_color_space),
       // TODO(hiroh): Set profile to UNKNOWN.
       profile_(profile),
       accelerator_(std::move(accelerator)),
       parser_(accelerator_->IsFrameContextRequired()) {}

 VP9Decoder::~VP9Decoder() = default;

 void VP9Decoder::SetStream(int32_t id, const DecoderBuffer& decoder_buffer) {
   const uint8_t* ptr = decoder_buffer.data();
   const size_t size = decoder_buffer.data_size();
   const DecryptConfig* decrypt_config = decoder_buffer.decrypt_config();

   DCHECK(ptr);
   DCHECK(size);
   DVLOG(4) << "New input stream id: " << id << " at: " << (void*)ptr
            << " size: " << size;
   stream_id_ = id;
   if (decrypt_config) {
     parser_.SetStream(ptr, size, GetSpatialLayerFrameSize(decoder_buffer),
                       decrypt_config->Clone());
   } else {
     parser_.SetStream(ptr, size, GetSpatialLayerFrameSize(decoder_buffer),
                       nullptr);
   }
 }

 bool VP9Decoder::Flush() {
   DVLOG(2) << "Decoder flush";
   Reset();
   return true;
 }

 void VP9Decoder::Reset() {
   curr_frame_hdr_ = nullptr;
   decrypt_config_.reset();
   pending_pic_.reset();

   ref_frames_.Clear();

   parser_.Reset();

   if (state_ == kDecoding) {
     state_ = kAfterReset;
   }
 }

 VP9Decoder::DecodeResult VP9Decoder::Decode() {
   while (true) {
     // If we have a pending picture to decode, try that first.
     if (pending_pic_) {
       VP9Accelerator::Status status =
           DecodeAndOutputPicture(std::move(pending_pic_));
       if (status == VP9Accelerator::Status::kFail) {
         SetError();
         return kDecodeError;
       }
       if (status == VP9Accelerator::Status::kTryAgain)
         return kTryAgain;
     }

     // Read a new frame header if one is not awaiting decoding already.
     if (!curr_frame_hdr_) {
       gfx::Size allocate_size;
       std::unique_ptr<Vp9FrameHeader> hdr(new Vp9FrameHeader());
       Vp9Parser::Result res =
           parser_.ParseNextFrame(hdr.get(), &allocate_size, &decrypt_config_);
       switch (res) {
         case Vp9Parser::kOk:
           curr_frame_hdr_ = std::move(hdr);
           curr_frame_size_ = allocate_size;
           break;

         case Vp9Parser::kEOStream:
           return kRanOutOfStreamData;

         case Vp9Parser::kInvalidStream:
           DVLOG(1) << "Error parsing stream";
           SetError();
           return kDecodeError;

         case Vp9Parser::kAwaitingRefresh:
           DVLOG(4) << "Awaiting context update";
           return kNeedContextUpdate;
       }
     }

     if (state_ != kDecoding) {
       // Not kDecoding, so we need a resume point (a keyframe), as we are after
       // reset or at the beginning of the stream. Drop anything that is not
       // a keyframe in such case, and continue looking for a keyframe.
       // Only exception is when the stream/sequence starts with an Intra only
       // frame.
       if (curr_frame_hdr_->IsKeyframe() ||
           (curr_frame_hdr_->IsIntra() && pic_size_.IsEmpty())) {
         state_ = kDecoding;
       } else {
         curr_frame_hdr_.reset();
         decrypt_config_.reset();
         continue;
       }
     }

     if (curr_frame_hdr_->show_existing_frame) {
       // This frame header only instructs us to display one of the
       // previously-decoded frames, but has no frame data otherwise. Display
       // and continue decoding subsequent frames.
       size_t frame_to_show = curr_frame_hdr_->frame_to_show_map_idx;
       if (frame_to_show >= kVp9NumRefFrames ||
           !ref_frames_.GetFrame(frame_to_show)) {
         DVLOG(1) << "Request to show an invalid frame";
         SetError();
         return kDecodeError;
       }

       // Duplicate the VP9Picture and set the current bitstream id to keep the
       // correct timestamp.
       scoped_refptr<VP9Picture> pic =
           ref_frames_.GetFrame(frame_to_show)->Duplicate();
       if (pic == nullptr) {
         DVLOG(1) << "Failed to duplicate the VP9Picture.";
         SetError();
         return kDecodeError;
       }
       pic->set_bitstream_id(stream_id_);
       if (!accelerator_->OutputPicture(std::move(pic))) {
         SetError();
         return kDecodeError;
       }

       curr_frame_hdr_.reset();
       decrypt_config_.reset();
       continue;
     }

     gfx::Size new_pic_size = curr_frame_size_;
     gfx::Rect new_render_rect(curr_frame_hdr_->render_width,
                               curr_frame_hdr_->render_height);
     // For safety, check the validity of render size or leave it as pic size.
     if (!gfx::Rect(new_pic_size).Contains(new_render_rect)) {
       DVLOG(1) << "Render size exceeds picture size. render size: "
                << new_render_rect.ToString()
                << ", picture size: " << new_pic_size.ToString();
       new_render_rect = gfx::Rect(new_pic_size);
     }
     VideoCodecProfile new_profile =
         VP9ProfileToVideoCodecProfile(curr_frame_hdr_->profile);
     if (new_profile == VIDEO_CODEC_PROFILE_UNKNOWN) {
       VLOG(1) << "Invalid profile: " << curr_frame_hdr_->profile;
       return kDecodeError;
     }
     if (!IsValidBitDepth(curr_frame_hdr_->bit_depth, new_profile)) {
       DVLOG(1) << "Invalid bit depth="
                << base::strict_cast<int>(curr_frame_hdr_->bit_depth)
                << ", profile=" << GetProfileName(new_profile);
       return kDecodeError;
     }
     if (!IsYUV420Sequence(*curr_frame_hdr_)) {
       DVLOG(1) << "Only YUV 4:2:0 is supported";
       return kDecodeError;
     }

     DCHECK(!new_pic_size.IsEmpty());
     if (new_pic_size != pic_size_ || new_profile != profile_ ||
         curr_frame_hdr_->bit_depth != bit_depth_) {
       DVLOG(1) << "New profile: " << GetProfileName(new_profile)
                << ", New resolution: " << new_pic_size.ToString()
                << ", New bit depth: "
                << base::strict_cast<int>(curr_frame_hdr_->bit_depth);

       if (!curr_frame_hdr_->IsKeyframe() &&
           !(curr_frame_hdr_->IsIntra() && pic_size_.IsEmpty())) {
         // TODO(posciak): This is doable, but requires a few modifications to
         // VDA implementations to allow multiple picture buffer sets in flight.
         // http://crbug.com/832264
         DVLOG(1) << "Resolution change currently supported for keyframes and "
                     "sequence begins with Intra only when there is no prior "
                     "frames in the context";
         if (++size_change_failure_counter_ > kVPxMaxNumOfSizeChangeFailures) {
           SetError();
           return kDecodeError;
         }

         curr_frame_hdr_.reset();
         decrypt_config_.reset();
         return kRanOutOfStreamData;
       }

       // TODO(posciak): This requires us to be on a keyframe (see above) and is
       // required, because VDA clients expect all surfaces to be returned before
       // they can cycle surface sets after receiving kConfigChange.
       // This is only an implementation detail of VDAs and can be improved.
       ref_frames_.Clear();

       pic_size_ = new_pic_size;
       visible_rect_ = new_render_rect;
       profile_ = new_profile;
       bit_depth_ = curr_frame_hdr_->bit_depth;
       size_change_failure_counter_ = 0;
       return kConfigChange;
     }

     scoped_refptr<VP9Picture> pic = accelerator_->CreateVP9Picture();
     if (!pic) {
       return kRanOutOfSurfaces;
     }
     DVLOG(2) << "Render resolution: " << new_render_rect.ToString();

     pic->set_visible_rect(new_render_rect);
     pic->set_bitstream_id(stream_id_);

     pic->set_decrypt_config(std::move(decrypt_config_));

     // For VP9, container color spaces override video stream color spaces.
     if (container_color_space_.IsSpecified())
       pic->set_colorspace(container_color_space_);
     else if (curr_frame_hdr_)
       pic->set_colorspace(curr_frame_hdr_->GetColorSpace());

     pic->frame_hdr = std::move(curr_frame_hdr_);

     VP9Accelerator::Status status = DecodeAndOutputPicture(std::move(pic));
     if (status == VP9Accelerator::Status::kFail) {
       SetError();
       return kDecodeError;
     }
     if (status == VP9Accelerator::Status::kTryAgain)
       return kTryAgain;
   }
 }

 void VP9Decoder::UpdateFrameContext(
     scoped_refptr<VP9Picture> pic,
     Vp9Parser::ContextRefreshCallback context_refresh_cb) {
   DCHECK(context_refresh_cb);
   Vp9FrameContext frame_ctx;
   memset(&frame_ctx, 0, sizeof(frame_ctx));

   if (!accelerator_->GetFrameContext(std::move(pic), &frame_ctx)) {
     SetError();
     return;
   }

   std::move(context_refresh_cb).Run(frame_ctx);
 }

 VP9Decoder::VP9Accelerator::Status VP9Decoder::DecodeAndOutputPicture(
     scoped_refptr<VP9Picture> pic) {
   DCHECK(!pic_size_.IsEmpty());
   DCHECK(pic->frame_hdr);

   base::OnceClosure done_cb;
   Vp9Parser::ContextRefreshCallback context_refresh_cb =
       parser_.GetContextRefreshCb(pic->frame_hdr->frame_context_idx);
   if (context_refresh_cb) {
     done_cb =
         base::BindOnce(&VP9Decoder::UpdateFrameContext, base::Unretained(this),
                        pic, std::move(context_refresh_cb));
   }

   const Vp9Parser::Context& context = parser_.context();
   VP9Accelerator::Status status = accelerator_->SubmitDecode(
       pic, context.segmentation(), context.loop_filter(), ref_frames_,
       std::move(done_cb));
   if (status != VP9Accelerator::Status::kOk) {
     if (status == VP9Accelerator::Status::kTryAgain)
       pending_pic_ = std::move(pic);
     return status;
   }

   if (pic->frame_hdr->show_frame) {
     if (!accelerator_->OutputPicture(pic))
       return VP9Accelerator::Status::kFail;
   }

   ref_frames_.Refresh(std::move(pic));
   return status;
 }

 void VP9Decoder::SetError() {
   Reset();
   state_ = kError;
 }

 gfx::Size VP9Decoder::GetPicSize() const {
   return pic_size_;
 }

 gfx::Rect VP9Decoder::GetVisibleRect() const {
   return visible_rect_;
 }

 VideoCodecProfile VP9Decoder::GetProfile() const {
   return profile_;
 }

 uint8_t VP9Decoder::GetBitDepth() const {
   return bit_depth_;
 }

 size_t VP9Decoder::GetRequiredNumOfPictures() const {
   constexpr size_t kPicsInPipeline = limits::kMaxVideoFrames + 1;
   return kPicsInPipeline + GetNumReferenceFrames();
 }

 size_t VP9Decoder::GetNumReferenceFrames() const {
   // Maximum number of reference frames
   return kVp9NumRefFrames;
 }

 }  // namespace media
	// Copyright 2015 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.

	#include "media/gpu/vp9_decoder.h"

	#include <memory>

	#include "base/bind.h"
	#include "base/feature_list.h"
	#include "base/logging.h"
	#include "build/build_config.h"
	#include "build/chromeos_buildflags.h"
	#include "media/base/limits.h"
	#include "media/base/media_switches.h"
	#include "media/gpu/vp9_decoder.h"

	namespace media {

	namespace {
	std::vector<uint32_t> GetSpatialLayerFrameSize(
	const DecoderBuffer& decoder_buffer) {
	#if defined(ARCH_CPU_X86_FAMILY) && BUILDFLAG(IS_CHROMEOS_ASH)
	const uint32_t* cue_data =
	reinterpret_cast<const uint32_t*>(decoder_buffer.side_data());
	if (!cue_data) {
	return {};
	}
	if (!base::FeatureList::IsEnabled(media::kVaapiVp9kSVCHWDecoding)) {
	DLOG(ERROR) << "Vp9Parser doesn't support parsing SVC stream";
	return {};
	}

	size_t num_of_layers = decoder_buffer.side_data_size() / sizeof(uint32_t);
	if (num_of_layers > 3u) {
	DLOG(WARNING) << "The maximum number of spatial layers in VP9 is three";
	return {};
	}
	return std::vector<uint32_t>(cue_data, cue_data + num_of_layers);
	#else
	return {};
	#endif // defined(ARCH_CPU_X86_FAMILY) && BUILDFLAG(IS_CHROMEOS_ASH)
	}

	VideoCodecProfile VP9ProfileToVideoCodecProfile(uint8_t profile) {
	switch (profile) {
	case 0:
	return VP9PROFILE_PROFILE0;
	case 1:
	return VP9PROFILE_PROFILE1;
	case 2:
	return VP9PROFILE_PROFILE2;
	case 3:
	return VP9PROFILE_PROFILE3;
	default:
	return VIDEO_CODEC_PROFILE_UNKNOWN;
	}
	}

	bool IsValidBitDepth(uint8_t bit_depth, VideoCodecProfile profile) {
	// Spec 7.2.
	switch (profile) {
	case VP9PROFILE_PROFILE0:
	case VP9PROFILE_PROFILE1:
	return bit_depth == 8u;
	case VP9PROFILE_PROFILE2:
	case VP9PROFILE_PROFILE3:
	return bit_depth == 10u \|\| bit_depth == 12u;
	default:
	NOTREACHED();
	return false;
	}
	}

	bool IsYUV420Sequence(const Vp9FrameHeader& frame_header) {
	// Spec 7.2.2
	return frame_header.subsampling_x == 1u && frame_header.subsampling_y == 1u;
	}
	} // namespace

	VP9Decoder::VP9Accelerator::VP9Accelerator() {}

	VP9Decoder::VP9Accelerator::~VP9Accelerator() {}

	VP9Decoder::VP9Decoder(std::unique_ptr<VP9Accelerator> accelerator,
	VideoCodecProfile profile,
	const VideoColorSpace& container_color_space)
	: state_(kNeedStreamMetadata),
	container_color_space_(container_color_space),
	// TODO(hiroh): Set profile to UNKNOWN.
	profile_(profile),
	accelerator_(std::move(accelerator)),
	parser_(accelerator_->IsFrameContextRequired()) {}

	VP9Decoder::~VP9Decoder() = default;

	void VP9Decoder::SetStream(int32_t id, const DecoderBuffer& decoder_buffer) {
	const uint8_t* ptr = decoder_buffer.data();
	const size_t size = decoder_buffer.data_size();
	const DecryptConfig* decrypt_config = decoder_buffer.decrypt_config();

	DCHECK(ptr);
	DCHECK(size);
	DVLOG(4) << "New input stream id: " << id << " at: " << (void*)ptr
	<< " size: " << size;
	stream_id_ = id;
	if (decrypt_config) {
	parser_.SetStream(ptr, size, GetSpatialLayerFrameSize(decoder_buffer),
	decrypt_config->Clone());
	} else {
	parser_.SetStream(ptr, size, GetSpatialLayerFrameSize(decoder_buffer),
	nullptr);
	}
	}

	bool VP9Decoder::Flush() {
	DVLOG(2) << "Decoder flush";
	Reset();
	return true;
	}

	void VP9Decoder::Reset() {
	curr_frame_hdr_ = nullptr;
	decrypt_config_.reset();
	pending_pic_.reset();

	ref_frames_.Clear();

	parser_.Reset();

	if (state_ == kDecoding) {
	state_ = kAfterReset;
	}
	}

	VP9Decoder::DecodeResult VP9Decoder::Decode() {
	while (true) {
	// If we have a pending picture to decode, try that first.
	if (pending_pic_) {
	VP9Accelerator::Status status =
	DecodeAndOutputPicture(std::move(pending_pic_));
	if (status == VP9Accelerator::Status::kFail) {
	SetError();
	return kDecodeError;
	}
	if (status == VP9Accelerator::Status::kTryAgain)
	return kTryAgain;
	}

	// Read a new frame header if one is not awaiting decoding already.
	if (!curr_frame_hdr_) {
	gfx::Size allocate_size;
	std::unique_ptr<Vp9FrameHeader> hdr(new Vp9FrameHeader());
	Vp9Parser::Result res =
	parser_.ParseNextFrame(hdr.get(), &allocate_size, &decrypt_config_);
	switch (res) {
	case Vp9Parser::kOk:
	curr_frame_hdr_ = std::move(hdr);
	curr_frame_size_ = allocate_size;
	break;

	case Vp9Parser::kEOStream:
	return kRanOutOfStreamData;

	case Vp9Parser::kInvalidStream:
	DVLOG(1) << "Error parsing stream";
	SetError();
	return kDecodeError;

	case Vp9Parser::kAwaitingRefresh:
	DVLOG(4) << "Awaiting context update";
	return kNeedContextUpdate;
	}
	}

	if (state_ != kDecoding) {
	// Not kDecoding, so we need a resume point (a keyframe), as we are after
	// reset or at the beginning of the stream. Drop anything that is not
	// a keyframe in such case, and continue looking for a keyframe.
	// Only exception is when the stream/sequence starts with an Intra only
	// frame.
	if (curr_frame_hdr_->IsKeyframe() \|\|
	(curr_frame_hdr_->IsIntra() && pic_size_.IsEmpty())) {
	state_ = kDecoding;
	} else {
	curr_frame_hdr_.reset();
	decrypt_config_.reset();
	continue;
	}
	}

	if (curr_frame_hdr_->show_existing_frame) {
	// This frame header only instructs us to display one of the
	// previously-decoded frames, but has no frame data otherwise. Display
	// and continue decoding subsequent frames.
	size_t frame_to_show = curr_frame_hdr_->frame_to_show_map_idx;
	if (frame_to_show >= kVp9NumRefFrames \|\|
	!ref_frames_.GetFrame(frame_to_show)) {
	DVLOG(1) << "Request to show an invalid frame";
	SetError();
	return kDecodeError;
	}

	// Duplicate the VP9Picture and set the current bitstream id to keep the
	// correct timestamp.
	scoped_refptr<VP9Picture> pic =
	ref_frames_.GetFrame(frame_to_show)->Duplicate();
	if (pic == nullptr) {
	DVLOG(1) << "Failed to duplicate the VP9Picture.";
	SetError();
	return kDecodeError;
	}
	pic->set_bitstream_id(stream_id_);
	if (!accelerator_->OutputPicture(std::move(pic))) {
	SetError();
	return kDecodeError;
	}

	curr_frame_hdr_.reset();
	decrypt_config_.reset();
	continue;
	}

	gfx::Size new_pic_size = curr_frame_size_;
	gfx::Rect new_render_rect(curr_frame_hdr_->render_width,
	curr_frame_hdr_->render_height);
	// For safety, check the validity of render size or leave it as pic size.
	if (!gfx::Rect(new_pic_size).Contains(new_render_rect)) {
	DVLOG(1) << "Render size exceeds picture size. render size: "
	<< new_render_rect.ToString()
	<< ", picture size: " << new_pic_size.ToString();
	new_render_rect = gfx::Rect(new_pic_size);
	}
	VideoCodecProfile new_profile =
	VP9ProfileToVideoCodecProfile(curr_frame_hdr_->profile);
	if (new_profile == VIDEO_CODEC_PROFILE_UNKNOWN) {
	VLOG(1) << "Invalid profile: " << curr_frame_hdr_->profile;
	return kDecodeError;
	}
	if (!IsValidBitDepth(curr_frame_hdr_->bit_depth, new_profile)) {
	DVLOG(1) << "Invalid bit depth="
	<< base::strict_cast<int>(curr_frame_hdr_->bit_depth)
	<< ", profile=" << GetProfileName(new_profile);
	return kDecodeError;
	}
	if (!IsYUV420Sequence(*curr_frame_hdr_)) {
	DVLOG(1) << "Only YUV 4:2:0 is supported";
	return kDecodeError;
	}

	DCHECK(!new_pic_size.IsEmpty());
	if (new_pic_size != pic_size_ \|\| new_profile != profile_ \|\|
	curr_frame_hdr_->bit_depth != bit_depth_) {
	DVLOG(1) << "New profile: " << GetProfileName(new_profile)
	<< ", New resolution: " << new_pic_size.ToString()
	<< ", New bit depth: "
	<< base::strict_cast<int>(curr_frame_hdr_->bit_depth);

	if (!curr_frame_hdr_->IsKeyframe() &&
	!(curr_frame_hdr_->IsIntra() && pic_size_.IsEmpty())) {
	// TODO(posciak): This is doable, but requires a few modifications to
	// VDA implementations to allow multiple picture buffer sets in flight.
	// http://crbug.com/832264
	DVLOG(1) << "Resolution change currently supported for keyframes and "
	"sequence begins with Intra only when there is no prior "
	"frames in the context";
	if (++size_change_failure_counter_ > kVPxMaxNumOfSizeChangeFailures) {
	SetError();
	return kDecodeError;
	}

	curr_frame_hdr_.reset();
	decrypt_config_.reset();
	return kRanOutOfStreamData;
	}

	// TODO(posciak): This requires us to be on a keyframe (see above) and is
	// required, because VDA clients expect all surfaces to be returned before
	// they can cycle surface sets after receiving kConfigChange.
	// This is only an implementation detail of VDAs and can be improved.
	ref_frames_.Clear();

	pic_size_ = new_pic_size;
	visible_rect_ = new_render_rect;
	profile_ = new_profile;
	bit_depth_ = curr_frame_hdr_->bit_depth;
	size_change_failure_counter_ = 0;
	return kConfigChange;
	}

	scoped_refptr<VP9Picture> pic = accelerator_->CreateVP9Picture();
	if (!pic) {
	return kRanOutOfSurfaces;
	}
	DVLOG(2) << "Render resolution: " << new_render_rect.ToString();

	pic->set_visible_rect(new_render_rect);
	pic->set_bitstream_id(stream_id_);

	pic->set_decrypt_config(std::move(decrypt_config_));

	// For VP9, container color spaces override video stream color spaces.
	if (container_color_space_.IsSpecified())
	pic->set_colorspace(container_color_space_);
	else if (curr_frame_hdr_)
	pic->set_colorspace(curr_frame_hdr_->GetColorSpace());

	pic->frame_hdr = std::move(curr_frame_hdr_);

	VP9Accelerator::Status status = DecodeAndOutputPicture(std::move(pic));
	if (status == VP9Accelerator::Status::kFail) {
	SetError();
	return kDecodeError;
	}
	if (status == VP9Accelerator::Status::kTryAgain)
	return kTryAgain;
	}
	}

	void VP9Decoder::UpdateFrameContext(
	scoped_refptr<VP9Picture> pic,
	Vp9Parser::ContextRefreshCallback context_refresh_cb) {
	DCHECK(context_refresh_cb);
	Vp9FrameContext frame_ctx;
	memset(&frame_ctx, 0, sizeof(frame_ctx));

	if (!accelerator_->GetFrameContext(std::move(pic), &frame_ctx)) {
	SetError();
	return;
	}

	std::move(context_refresh_cb).Run(frame_ctx);
	}

	VP9Decoder::VP9Accelerator::Status VP9Decoder::DecodeAndOutputPicture(
	scoped_refptr<VP9Picture> pic) {
	DCHECK(!pic_size_.IsEmpty());
	DCHECK(pic->frame_hdr);

	base::OnceClosure done_cb;
	Vp9Parser::ContextRefreshCallback context_refresh_cb =
	parser_.GetContextRefreshCb(pic->frame_hdr->frame_context_idx);
	if (context_refresh_cb) {
	done_cb =
	base::BindOnce(&VP9Decoder::UpdateFrameContext, base::Unretained(this),
	pic, std::move(context_refresh_cb));
	}

	const Vp9Parser::Context& context = parser_.context();
	VP9Accelerator::Status status = accelerator_->SubmitDecode(
	pic, context.segmentation(), context.loop_filter(), ref_frames_,
	std::move(done_cb));
	if (status != VP9Accelerator::Status::kOk) {
	if (status == VP9Accelerator::Status::kTryAgain)
	pending_pic_ = std::move(pic);
	return status;
	}

	if (pic->frame_hdr->show_frame) {
	if (!accelerator_->OutputPicture(pic))
	return VP9Accelerator::Status::kFail;
	}

	ref_frames_.Refresh(std::move(pic));
	return status;
	}

	void VP9Decoder::SetError() {
	Reset();
	state_ = kError;
	}

	gfx::Size VP9Decoder::GetPicSize() const {
	return pic_size_;
	}

	gfx::Rect VP9Decoder::GetVisibleRect() const {
	return visible_rect_;
	}

	VideoCodecProfile VP9Decoder::GetProfile() const {
	return profile_;
	}

	uint8_t VP9Decoder::GetBitDepth() const {
	return bit_depth_;
	}

	size_t VP9Decoder::GetRequiredNumOfPictures() const {
	constexpr size_t kPicsInPipeline = limits::kMaxVideoFrames + 1;
	return kPicsInPipeline + GetNumReferenceFrames();
	}

	size_t VP9Decoder::GetNumReferenceFrames() const {
	// Maximum number of reference frames
	return kVp9NumRefFrames;
	}

	} // namespace media