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              : #include "NeedMediaData.h"
      21              : #include "IActiveRequests.h"
      22              : #include "IMediaPipelineClient.h"
      23              : #include "ISharedMemoryBuffer.h"
      24              : #include "RialtoServerLogging.h"
      25              : #include "ShmUtils.h"
      26              : #include "TypeConverters.h"
      27              : 
      28              : namespace firebolt::rialto::server
      29              : {
      30           11 : NeedMediaData::NeedMediaData(std::weak_ptr<IMediaPipelineClient> client, IActiveRequests &activeRequests,
      31              :                              const ISharedMemoryBuffer &shmBuffer, int sessionId, MediaSourceType mediaSourceType,
      32           11 :                              std::int32_t sourceId, PlaybackState currentPlaybackState)
      33           11 :     : m_client{client}, m_activeRequests{activeRequests}, m_mediaSourceType{mediaSourceType}, m_frameCount{kMaxFrames},
      34           11 :       m_sourceId{sourceId}
      35              : {
      36           11 :     if (PlaybackState::PLAYING != currentPlaybackState)
      37              :     {
      38            7 :         RIALTO_SERVER_LOG_DEBUG("Pipeline in prerolling state. Sending smaller frame count for %s",
      39              :                                 common::convertMediaSourceType(m_mediaSourceType));
      40            7 :         m_frameCount = kPrerollNumFrames;
      41              :     }
      42           11 :     if (MediaSourceType::AUDIO != mediaSourceType && MediaSourceType::VIDEO != mediaSourceType &&
      43            1 :         MediaSourceType::SUBTITLE != mediaSourceType)
      44              :     {
      45            1 :         RIALTO_SERVER_LOG_ERROR("Unable to initialize NeedMediaData - unknown mediaSourceType: %s",
      46              :                                 common::convertMediaSourceType(m_mediaSourceType));
      47            1 :         m_isValid = false;
      48            1 :         return;
      49              :     }
      50              :     try
      51              :     {
      52           10 :         m_maxMediaBytes =
      53           10 :             shmBuffer.getMaxDataLen(ISharedMemoryBuffer::MediaPlaybackType::GENERIC, sessionId, mediaSourceType) -
      54           10 :             getMaxMetadataBytes();
      55              :         auto metadataOffset =
      56           10 :             shmBuffer.getDataOffset(ISharedMemoryBuffer::MediaPlaybackType::GENERIC, sessionId, mediaSourceType);
      57           10 :         auto mediadataOffset = metadataOffset + getMaxMetadataBytes();
      58           10 :         m_shmInfo = std::make_shared<MediaPlayerShmInfo>(
      59           10 :             MediaPlayerShmInfo{getMaxMetadataBytes(), metadataOffset, mediadataOffset, m_maxMediaBytes});
      60           10 :         m_isValid = true;
      61              :     }
      62            0 :     catch (const std::exception &e)
      63              :     {
      64            0 :         RIALTO_SERVER_LOG_ERROR("Unable to construct NeedMediaData message for %s - %s",
      65              :                                 common::convertMediaSourceType(m_mediaSourceType), e.what());
      66            0 :         m_isValid = false;
      67              :     }
      68              : }
      69              : 
      70           11 : bool NeedMediaData::send() const
      71              : {
      72           11 :     auto client = m_client.lock();
      73           11 :     if (client && m_isValid)
      74              :     {
      75           20 :         client->notifyNeedMediaData(m_sourceId, m_frameCount,
      76           10 :                                     m_activeRequests.insert(m_mediaSourceType, m_maxMediaBytes), m_shmInfo);
      77           10 :         return true;
      78              :     }
      79            1 :     return false;
      80           11 : }
      81              : } // namespace firebolt::rialto::server