Line data    Source code

       1              : /*
       2              :  * Copyright (C) 2025 Sky UK
       3              :  *
       4              :  * This library is free software; you can redistribute it and/or
       5              :  * modify it under the terms of the GNU Lesser General Public
       6              :  * License as published by the Free Software Foundation;
       7              :  * version 2.1 of the License.
       8              :  *
       9              :  * This library is distributed in the hope that it will be useful,
      10              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12              :  * Lesser General Public License for more details.
      13              :  *
      14              :  * You should have received a copy of the GNU Lesser General Public
      15              :  * License along with this library; if not, write to the Free Software
      16              :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
      17              :  */
      18              : 
      19              : #pragma once
      20              : 
      21              : #include "GStreamerUtils.h"
      22              : #include "MediaCommon.h"
      23              : #include <gst/gst.h>
      24              : #include <memory>
      25              : #include <string>
      26              : 
      27              : class IPlaybackDelegate
      28              : {
      29              : public:
      30              :     enum class Property
      31              :     {
      32              :         // PullModePlaybackDelegate Properties
      33              :         IsSinglePathStream,
      34              :         NumberOfStreams,
      35              :         HasDrm,
      36              :         Stats,
      37              : 
      38              :         // PullModeAudioPlaybackDelegate Properties
      39              :         Volume,
      40              :         Mute,
      41              :         Gap,
      42              :         LowLatency,
      43              :         Sync,
      44              :         SyncOff,
      45              :         StreamSyncMode,
      46              :         AudioFade,
      47              :         FadeVolume,
      48              :         LimitBufferingMs,
      49              :         UseBuffering,
      50              :         Async,
      51              : 
      52              :         // PullModeVideoPlaybackDelegate Properties
      53              :         WindowSet,
      54              :         MaxVideoWidth,
      55              :         MaxVideoHeight,
      56              :         FrameStepOnPreroll,
      57              :         ImmediateOutput,
      58              :         SyncmodeStreaming,
      59              :         ShowVideoWindow,
      60              : 
      61              :         // PullModeSubtitlePlaybackDelegate Properties
      62              :         TextTrackIdentifier,
      63              :         WindowId,
      64              : 
      65              :         // PushModeAudioPlaybackDelegate Properties
      66              :         TsOffset,
      67              :     };
      68              : 
      69          459 :     IPlaybackDelegate() = default;
      70          459 :     virtual ~IPlaybackDelegate() = default;
      71              : 
      72              :     IPlaybackDelegate(const IPlaybackDelegate &) = delete;
      73              :     IPlaybackDelegate(IPlaybackDelegate &&) = delete;
      74              :     IPlaybackDelegate &operator=(const IPlaybackDelegate &) = delete;
      75              :     IPlaybackDelegate &operator=(IPlaybackDelegate &&) = delete;
      76              : 
      77              :     virtual void handleEos() = 0;
      78              :     virtual void handleStateChanged(firebolt::rialto::PlaybackState state) = 0;
      79              :     virtual void handleError(const std::string &message, gint code = 0) = 0;
      80              :     virtual void handleQos(uint64_t processed, uint64_t dropped) const = 0;
      81              : 
      82              :     virtual GstStateChangeReturn changeState(GstStateChange transition) = 0;
      83              :     virtual void postAsyncStart() = 0;
      84              :     virtual void setProperty(const Property &type, const GValue *value) = 0;
      85              :     virtual void getProperty(const Property &type, GValue *value) = 0;
      86              :     virtual std::optional<gboolean> handleQuery(GstQuery *query) const = 0;
      87              :     virtual gboolean handleSendEvent(GstEvent *event) = 0;
      88              :     virtual gboolean handleEvent(GstPad *pad, GstObject *parent, GstEvent *event) = 0;
      89              :     virtual GstFlowReturn handleBuffer(GstBuffer *buffer) = 0;
      90              : };