src/media/playback/mediaplayer/fidl/fidl_decoder_factory.cc

// Copyright 2018 The Fuchsia 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 "src/media/playback/mediaplayer/fidl/fidl_decoder_factory.h"

#include <fuchsia/mediacodec/cpp/fidl.h>
#include <lib/syslog/cpp/macros.h>

#include "lib/fidl/cpp/clone.h"
#include "src/media/playback/mediaplayer/fidl/fidl_processor.h"
#include "src/media/playback/mediaplayer/fidl/fidl_type_conversions.h"

namespace media_player {

// static
std::unique_ptr<DecoderFactory> FidlDecoderFactory::Create(ServiceProvider* service_provider) {
  return std::make_unique<FidlDecoderFactory>(service_provider);
}

FidlDecoderFactory::FidlDecoderFactory(ServiceProvider* service_provider)
    : service_provider_(service_provider) {
  codec_factory_ = service_provider_->ConnectToService<fuchsia::mediacodec::CodecFactory>();
}

FidlDecoderFactory::~FidlDecoderFactory() {}

void FidlDecoderFactory::CreateDecoder(const StreamType& stream_type,
                                       fit::function<void(std::shared_ptr<Processor>)> callback) {
  FX_DCHECK(callback);

  auto format_details = fidl::To<fuchsia::media::FormatDetailsPtr>(stream_type);
  if (!format_details || !codec_factory_) {
    // If we don't know how to build |CodecFormatDetails| or we don't have a
    // codec factory, we don't know how to make a decoder.
    callback(nullptr);
    return;
  }

  fuchsia::mediacodec::CreateDecoder_Params decoder_params;
  decoder_params.set_input_details(fidl::Clone(*format_details));
  decoder_params.set_promise_separate_access_units_on_input(true);
  decoder_params.set_require_hw(true);

  fuchsia::media::StreamProcessorPtr decoder;
  codec_factory_->CreateDecoder(std::move(decoder_params), decoder.NewRequest());
  FX_DCHECK(decoder);

  FidlProcessor::Create(service_provider_, stream_type.medium(), FidlProcessor::Function::kDecode,
                        std::move(decoder), std::move(callback));
}

}  // namespace media_player