media/gpu/vaapi/vaapi_image_decoder.cc

// Copyright 2019 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/vaapi/vaapi_image_decoder.h"

#include "base/logging.h"
#include "media/gpu/macros.h"
#include "media/gpu/vaapi/vaapi_wrapper.h"

namespace media {

VaapiImageDecoder::VaapiImageDecoder(VAProfile va_profile)
    : va_profile_(va_profile) {}

VaapiImageDecoder::~VaapiImageDecoder() = default;

bool VaapiImageDecoder::Initialize(const base::RepeatingClosure& error_uma_cb) {
  vaapi_wrapper_ =
      VaapiWrapper::Create(VaapiWrapper::kDecode, va_profile_, error_uma_cb);
  return !!vaapi_wrapper_;
}

gpu::ImageDecodeAcceleratorSupportedProfile
VaapiImageDecoder::GetSupportedProfile() const {
  if (!vaapi_wrapper_) {
    DVLOGF(1) << "The VAAPI has not been initialized";
    return gpu::ImageDecodeAcceleratorSupportedProfile();
  }

  gpu::ImageDecodeAcceleratorSupportedProfile profile;
  profile.image_type = GetType();
  DCHECK_NE(gpu::ImageDecodeAcceleratorType::kUnknown, profile.image_type);

  // Note that since |vaapi_wrapper_| was created successfully, we expect the
  // following calls to be successful. Hence the DCHECKs.
  const bool got_min_resolution = VaapiWrapper::GetDecodeMinResolution(
      va_profile_, &profile.min_encoded_dimensions);
  DCHECK(got_min_resolution);
  const bool got_max_resolution = VaapiWrapper::GetDecodeMaxResolution(
      va_profile_, &profile.max_encoded_dimensions);
  DCHECK(got_max_resolution);

  // TODO(andrescj): Ideally, we would advertise support for all the formats
  // supported by the driver. However, for now, we will only support exposing
  // YUV 4:2:0 surfaces as DmaBufs.
  DCHECK(VaapiWrapper::GetDecodeSupportedInternalFormats(va_profile_).yuv420);
  profile.subsamplings.push_back(gpu::ImageDecodeAcceleratorSubsampling::k420);
  return profile;
}

}  // namespace media