| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef STARBOARD_SHARED_STARBOARD_PLAYER_FILTER_AUDIO_DECODER_INTERNAL_H_ |
| #define STARBOARD_SHARED_STARBOARD_PLAYER_FILTER_AUDIO_DECODER_INTERNAL_H_ |
| |
| #include <vector> |
| |
| #include "starboard/media.h" |
| #include "starboard/shared/internal_only.h" |
| #include "starboard/shared/starboard/player/decoded_audio_internal.h" |
| #include "starboard/shared/starboard/player/input_buffer_internal.h" |
| #include "starboard/shared/starboard/player/job_queue.h" |
| #include "starboard/types.h" |
| |
| namespace starboard { |
| namespace shared { |
| namespace starboard { |
| namespace player { |
| namespace filter { |
| |
| // This class decodes encoded audio stream into playable audio data. |
| class AudioDecoder { |
| public: |
| virtual ~AudioDecoder() {} |
| |
| // Decode the encoded audio data stored in |input_buffer|. |
| virtual void Decode(const InputBuffer& input_buffer) = 0; |
| |
| // Note that there won't be more input data unless Reset() is called. |
| virtual void WriteEndOfStream() = 0; |
| |
| // Try to read the next decoded audio buffer. If there is no decoded audio |
| // available currently, it returns NULL. If the audio stream reaches EOS and |
| // there is no more decoded audio available, it returns an EOS buffer. |
| virtual scoped_refptr<DecodedAudio> Read() = 0; |
| |
| // Clear any cached buffer of the codec and reset the state of the codec. |
| // This function will be called during seek to ensure that the left over |
| // data from previous buffers are cleared. |
| virtual void Reset() = 0; |
| |
| // Return the sample type of the decoded pcm data. |
| virtual SbMediaAudioSampleType GetSampleType() const = 0; |
| |
| // Return the sample rate of the incoming audio. This should be used by the |
| // audio renderer as the sample rate of the underlying audio stream can be |
| // different than the sample rate stored in the meta data. |
| virtual int GetSamplesPerSecond() const = 0; |
| |
| // Return whether the decoder can accept more data or not. |
| virtual bool CanAcceptMoreData() const = 0; |
| }; |
| |
| } // namespace filter |
| } // namespace player |
| } // namespace starboard |
| } // namespace shared |
| } // namespace starboard |
| |
| #endif // STARBOARD_SHARED_STARBOARD_PLAYER_FILTER_AUDIO_DECODER_INTERNAL_H_ |