Line data    Source code

       1              : /*
       2              :  * If not stated otherwise in this file or this component's LICENSE file the
       3              :  * following copyright and licenses apply:
       4              :  *
       5              :  * Copyright 2022 Sky UK
       6              :  *
       7              :  * Licensed under the Apache License, Version 2.0 (the "License");
       8              :  * you may not use this file except in compliance with the License.
       9              :  * You may obtain a copy of the License at
      10              :  *
      11              :  * http://www.apache.org/licenses/LICENSE-2.0
      12              :  *
      13              :  * Unless required by applicable law or agreed to in writing, software
      14              :  * distributed under the License is distributed on an "AS IS" BASIS,
      15              :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      16              :  * See the License for the specific language governing permissions and
      17              :  * limitations under the License.
      18              :  */
      19              : 
      20              : #ifndef FIREBOLT_RIALTO_SERVER_SHARED_MEMORY_BUFFER_H_
      21              : #define FIREBOLT_RIALTO_SERVER_SHARED_MEMORY_BUFFER_H_
      22              : 
      23              : #include "ISharedMemoryBuffer.h"
      24              : #include <cstdint>
      25              : #include <memory>
      26              : #include <vector>
      27              : 
      28              : namespace firebolt::rialto::server
      29              : {
      30              : class SharedMemoryBufferFactory : public ISharedMemoryBufferFactory
      31              : {
      32              : public:
      33           50 :     ~SharedMemoryBufferFactory() override = default;
      34              :     std::shared_ptr<ISharedMemoryBuffer> createSharedMemoryBuffer(unsigned numOfPlaybacks,
      35              :                                                                   unsigned numOfWebAudioPlayers) const override;
      36              : };
      37              : 
      38              : class SharedMemoryBuffer : public ISharedMemoryBuffer
      39              : {
      40              : public:
      41              :     explicit SharedMemoryBuffer(unsigned numOfPlaybacks, unsigned numOfWebAudioPlayers);
      42              :     ~SharedMemoryBuffer() override;
      43              :     SharedMemoryBuffer(const SharedMemoryBuffer &) = delete;
      44              :     SharedMemoryBuffer(SharedMemoryBuffer &&) = delete;
      45              :     SharedMemoryBuffer &operator=(const SharedMemoryBuffer &) = delete;
      46              :     SharedMemoryBuffer &operator=(SharedMemoryBuffer &&) = delete;
      47              : 
      48              :     bool mapPartition(MediaPlaybackType playbackType, int id) override;
      49              :     bool unmapPartition(MediaPlaybackType playbackType, int id) override;
      50              : 
      51              :     bool clearData(MediaPlaybackType playbackType, int id, const MediaSourceType &mediaSourceType) const override;
      52              : 
      53              :     std::uint32_t getDataOffset(MediaPlaybackType playbackType, int id,
      54              :                                 const MediaSourceType &mediaSourceType) const override;
      55              :     std::uint32_t getMaxDataLen(MediaPlaybackType playbackType, int id,
      56              :                                 const MediaSourceType &mediaSourceType) const override;
      57              :     std::uint8_t *getDataPtr(MediaPlaybackType playbackType, int id,
      58              :                              const MediaSourceType &mediaSourceType) const override;
      59              : 
      60              :     int getFd() const override;
      61              :     std::uint32_t getSize() const override;
      62              :     std::uint8_t *getBuffer() const override;
      63              : 
      64              :     struct Partition
      65              :     {
      66              :         int id;
      67              :         std::uint32_t dataBufferAudioLen;
      68              :         std::uint32_t dataBufferVideoLen;
      69              :         std::uint32_t dataBufferSubtitleLen;
      70              :     };
      71              : 
      72              : private:
      73              :     size_t calculateBufferSize() const;
      74              :     bool getDataPtrForPartition(MediaPlaybackType playbackType, int id, std::uint8_t **ptr) const;
      75              :     const std::vector<Partition> *getPlaybackTypePartition(MediaPlaybackType playbackType) const;
      76              :     std::vector<Partition> *getPlaybackTypePartition(MediaPlaybackType playbackType);
      77              : 
      78              : private:
      79              :     std::vector<Partition> m_genericPartitions;
      80              :     std::vector<Partition> m_webAudioPartitions;
      81              :     std::uint32_t m_dataBufferLen;
      82              :     int m_dataBufferFd;
      83              :     std::uint8_t *m_dataBuffer;
      84              : };
      85              : } // namespace firebolt::rialto::server
      86              : 
      87              : #endif // FIREBOLT_RIALTO_SERVER_SHARED_MEMORY_BUFFER_H_