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// Copyright 2016 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/mojo/services/mojo_audio_decoder_service.h"
#include <utility>
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/logging.h"
#include "media/base/content_decryption_module.h"
#include "media/mojo/common/media_type_converters.h"
#include "media/mojo/common/mojo_decoder_buffer_converter.h"
#include "media/mojo/services/mojo_cdm_service_context.h"
namespace media {
MojoAudioDecoderService::MojoAudioDecoderService(
MojoCdmServiceContext* mojo_cdm_service_context,
std::unique_ptr<media::AudioDecoder> decoder)
: mojo_cdm_service_context_(mojo_cdm_service_context),
decoder_(std::move(decoder)) {
DCHECK(mojo_cdm_service_context_);
weak_this_ = weak_factory_.GetWeakPtr();
}
MojoAudioDecoderService::~MojoAudioDecoderService() = default;
void MojoAudioDecoderService::Construct(
mojo::PendingAssociatedRemote<mojom::AudioDecoderClient> client) {
DVLOG(1) << __func__;
client_.Bind(std::move(client));
}
void MojoAudioDecoderService::Initialize(
const AudioDecoderConfig& config,
const base::Optional<base::UnguessableToken>& cdm_id,
InitializeCallback callback) {
DVLOG(1) << __func__ << " " << config.AsHumanReadableString();
// |cdm_context_ref_| must be kept as long as |cdm_context| is used by the
// |decoder_|. We do NOT support resetting |cdm_context_ref_| because in
// general we don't support resetting CDM in the media pipeline.
if (cdm_id) {
if (!cdm_id_) {
DCHECK(!cdm_context_ref_);
cdm_id_ = cdm_id;
cdm_context_ref_ =
mojo_cdm_service_context_->GetCdmContextRef(cdm_id.value());
} else if (cdm_id != cdm_id_) {
// TODO(xhwang): Replace with mojo::ReportBadMessage().
NOTREACHED() << "The caller should not switch CDM";
OnInitialized(std::move(callback),
StatusCode::kDecoderMissingCdmForEncryptedContent);
return;
}
}
// Get CdmContext, which could be null.
CdmContext* cdm_context =
cdm_context_ref_ ? cdm_context_ref_->GetCdmContext() : nullptr;
if (config.is_encrypted() && !cdm_context) {
DVLOG(1) << "CdmContext for "
<< CdmContext::CdmIdToString(base::OptionalOrNullptr(cdm_id))
<< " not found for encrypted audio";
OnInitialized(std::move(callback),
StatusCode::kDecoderMissingCdmForEncryptedContent);
return;
}
decoder_->Initialize(
config, cdm_context,
base::BindOnce(&MojoAudioDecoderService::OnInitialized, weak_this_,
std::move(callback)),
base::BindRepeating(&MojoAudioDecoderService::OnAudioBufferReady,
weak_this_),
base::BindRepeating(&MojoAudioDecoderService::OnWaiting, weak_this_));
}
void MojoAudioDecoderService::SetDataSource(
mojo::ScopedDataPipeConsumerHandle receive_pipe) {
DVLOG(1) << __func__;
mojo_decoder_buffer_reader_.reset(
new MojoDecoderBufferReader(std::move(receive_pipe)));
}
void MojoAudioDecoderService::Decode(mojom::DecoderBufferPtr buffer,
DecodeCallback callback) {
DVLOG(3) << __func__;
mojo_decoder_buffer_reader_->ReadDecoderBuffer(
std::move(buffer), base::BindOnce(&MojoAudioDecoderService::OnReadDone,
weak_this_, std::move(callback)));
}
void MojoAudioDecoderService::Reset(ResetCallback callback) {
DVLOG(1) << __func__;
// Reset the reader so that pending decodes will be dispatches first.
mojo_decoder_buffer_reader_->Flush(
base::BindOnce(&MojoAudioDecoderService::OnReaderFlushDone, weak_this_,
std::move(callback)));
}
void MojoAudioDecoderService::OnInitialized(InitializeCallback callback,
Status status) {
DVLOG(1) << __func__ << " success:" << status.is_ok();
if (!status.is_ok()) {
// Do not call decoder_->NeedsBitstreamConversion() if init failed.
std::move(callback).Run(std::move(status), false,
AudioDecoderType::kUnknown);
return;
}
std::move(callback).Run(std::move(status),
decoder_->NeedsBitstreamConversion(),
decoder_->GetDecoderType());
}
// The following methods are needed so that we can bind them with a weak pointer
// to avoid running the |callback| after connection error happens and |this| is
// deleted. It's not safe to run the |callback| after a connection error.
void MojoAudioDecoderService::OnReadDone(DecodeCallback callback,
scoped_refptr<DecoderBuffer> buffer) {
DVLOG(3) << __func__ << " success:" << !!buffer;
if (!buffer) {
std::move(callback).Run(DecodeStatus::DECODE_ERROR);
return;
}
decoder_->Decode(buffer,
base::BindOnce(&MojoAudioDecoderService::OnDecodeStatus,
weak_this_, std::move(callback)));
}
void MojoAudioDecoderService::OnReaderFlushDone(ResetCallback callback) {
decoder_->Reset(base::BindOnce(&MojoAudioDecoderService::OnResetDone,
weak_this_, std::move(callback)));
}
void MojoAudioDecoderService::OnDecodeStatus(DecodeCallback callback,
const Status status) {
DVLOG(3) << __func__ << " status:" << status.code();
std::move(callback).Run(std::move(status));
}
void MojoAudioDecoderService::OnResetDone(ResetCallback callback) {
DVLOG(1) << __func__;
std::move(callback).Run();
}
void MojoAudioDecoderService::OnAudioBufferReady(
scoped_refptr<AudioBuffer> audio_buffer) {
DVLOG(1) << __func__;
// TODO(timav): Use DataPipe.
client_->OnBufferDecoded(mojom::AudioBuffer::From(*audio_buffer));
}
void MojoAudioDecoderService::OnWaiting(WaitingReason reason) {
DVLOG(1) << __func__;
client_->OnWaiting(reason);
}
} // namespace media
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