| // Copyright 2018 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. |
| |
| #ifndef CHROMECAST_MEDIA_CMA_PIPELINE_BACKEND_DECRYPTOR_H_ |
| #define CHROMECAST_MEDIA_CMA_PIPELINE_BACKEND_DECRYPTOR_H_ |
| |
| #include <memory> |
| #include <queue> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "chromecast/media/cma/base/decoder_buffer_base.h" |
| #include "chromecast/media/cma/pipeline/stream_decryptor.h" |
| #include "chromecast/public/media/media_pipeline_backend.h" |
| |
| namespace chromecast { |
| class TaskRunnerImpl; |
| |
| namespace media { |
| struct EncryptionScheme; |
| |
| class BackendDecryptor : public StreamDecryptor, |
| MediaPipelineBackend::AudioDecryptor::Delegate { |
| public: |
| explicit BackendDecryptor(const EncryptionScheme& scheme); |
| ~BackendDecryptor() override; |
| |
| // StreamDecryptor implementation: |
| void Init(const DecryptCB& decrypt_cb) override; |
| void Decrypt(scoped_refptr<DecoderBufferBase> buffer) override; |
| |
| private: |
| // MediaPipelineBackend::AudioDecryptor::Delegate implementation: |
| void OnPushBufferForDecryptComplete( |
| MediaPipelineBackend::BufferStatus status) override; |
| void OnDecryptComplete(bool success) override; |
| |
| // Pending buffers for decrypt. |
| BufferQueue pending_buffers_; |
| |
| // Buffers that are ready to return to caller. |
| BufferQueue ready_buffers_; |
| bool decrypt_success_; |
| bool wait_eos_; |
| |
| // |task_runner_| should have a longer life than |decryptor_|. |
| std::unique_ptr<TaskRunnerImpl> task_runner_; |
| std::unique_ptr<MediaPipelineBackend::AudioDecryptor> decryptor_; |
| |
| DecryptCB decrypt_cb_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BackendDecryptor); |
| }; |
| |
| } // namespace media |
| } // namespace chromecast |
| |
| #endif // CHROMECAST_MEDIA_CMA_PIPELINE_BACKEND_DECRYPTOR_H_ |