Line data    Source code

       1             : /*
       2             :  *  Copyright (C) 2004-2025 Savoir-faire Linux Inc.
       3             :  *
       4             :  *  This program is free software: you can redistribute it and/or modify
       5             :  *  it under the terms of the GNU General Public License as published by
       6             :  *  the Free Software Foundation, either version 3 of the License, or
       7             :  *  (at your option) any later version.
       8             :  *
       9             :  *  This program 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
      12             :  *  GNU General Public License for more details.
      13             :  *
      14             :  *  You should have received a copy of the GNU General Public License
      15             :  *  along with this program. If not, see <https://www.gnu.org/licenses/>.
      16             :  */
      17             : #pragma once
      18             : 
      19             : #include "noncopyable.h"
      20             : #include "threadloop.h"
      21             : #include "media/media_stream.h"
      22             : #include "media/media_device.h" // DeviceParams
      23             : #include "media/video/video_base.h"
      24             : #include "media/media_codec.h"
      25             : 
      26             : #include <map>
      27             : #include <atomic>
      28             : #include <future>
      29             : #include <string>
      30             : #include <mutex>
      31             : #include <condition_variable>
      32             : #include <array>
      33             : 
      34             : #if __APPLE__
      35             : #import "TargetConditionals.h"
      36             : #endif
      37             : 
      38             : namespace jami {
      39             : class MediaDecoder;
      40             : class MediaDemuxer;
      41             : } // namespace jami
      42             : 
      43             : namespace jami {
      44             : namespace video {
      45             : 
      46             : class SinkClient;
      47             : 
      48             : enum class VideoInputMode { ManagedByClient, ManagedByDaemon, Undefined };
      49             : 
      50             : class VideoInput : public VideoGenerator
      51             : {
      52             : public:
      53             :     VideoInput(VideoInputMode inputMode = VideoInputMode::Undefined,
      54             :                const std::string& resource = "local",
      55             :                const std::string& sink = "");
      56             :     ~VideoInput();
      57             : 
      58             :     // as VideoGenerator
      59             :     const std::string& getName() const { return resource_; }
      60             :     int getWidth() const;
      61             :     int getHeight() const;
      62             :     AVPixelFormat getPixelFormat() const;
      63             : 
      64             :     const DeviceParams& getConfig() const { return decOpts_; }
      65         108 :     std::shared_future<DeviceParams> getParams() const { return futureDecOpts_; }
      66             : 
      67             :     MediaStream getInfo() const;
      68             : 
      69             :     void setSink(const std::string& sinkId);
      70             :     void updateStartTime(int64_t startTime);
      71             :     void configureFilePlayback(const std::string& path, std::shared_ptr<MediaDemuxer>& demuxer, int index);
      72             :     void flushBuffers();
      73          10 :     void setPaused(bool paused) { paused_ = paused; }
      74             :     void setSeekTime(int64_t time);
      75             :     void setupSink(const int width, const int height);
      76             :     void stopSink();
      77             : 
      78             :     void setRecorderCallback(const std::function<void(const MediaStream& ms)>& cb);
      79             : 
      80             :     void setSuccessfulSetupCb(const std::function<void(MediaType, bool)>& cb) { onSuccessfulSetup_ = cb; }
      81             : 
      82             :     /**
      83             :      * Restart stopped video input
      84             :      * @note if a media is removed, then re-added in a conference, the loop will be stopped
      85             :      * and this input must be restarted
      86             :      */
      87             :     void restart();
      88             : 
      89             : private:
      90             :     NON_COPYABLE(VideoInput);
      91             : 
      92             :     std::shared_future<DeviceParams> switchInput(const std::string& resource);
      93             : 
      94             :     std::string resource_;
      95             :     std::atomic<bool> switchPending_ = {false};
      96             :     std::atomic_bool isStopped_ = {false};
      97             : 
      98             :     DeviceParams decOpts_;
      99             :     std::promise<DeviceParams> foundDecOpts_;
     100             :     std::shared_future<DeviceParams> futureDecOpts_;
     101             :     bool emulateRate_ = false;
     102             : 
     103             :     std::atomic_bool decOptsFound_ {false};
     104             :     void foundDecOpts(const DeviceParams& params);
     105             : 
     106             :     void clearOptions();
     107             : 
     108             :     // true if decOpts_ is ready to use, false if using promise/future
     109             :     bool initCamera(const std::string& device);
     110             :     bool initFile(std::string path);
     111             : 
     112             : #ifdef __APPLE__
     113             :     bool initAVFoundation(const std::string& display);
     114             : #elif defined(WIN32)
     115             :     bool initWindowsGrab(const std::string& display);
     116             : #else
     117             :     bool initLinuxGrab(const std::string& display);
     118             : #endif
     119             : 
     120             :     bool isCapturing() const noexcept;
     121             :     void startLoop();
     122             : 
     123             :     void switchDevice();
     124             :     bool capturing_ {false};
     125             :     void createDecoder();
     126             :     void deleteDecoder();
     127             :     std::unique_ptr<MediaDecoder> decoder_;
     128             :     std::shared_ptr<SinkClient> sink_;
     129             :     ThreadLoop loop_;
     130             : 
     131             :     // for ThreadLoop
     132             :     bool setup();
     133             :     void process();
     134             :     void cleanup();
     135             : 
     136             :     bool captureFrame();
     137             : 
     138             :     int rotation_ {0};
     139             :     std::shared_ptr<AVBufferRef> displayMatrix_;
     140             :     void setRotation(int angle);
     141             :     VideoInputMode inputMode_;
     142         457 :     inline bool videoManagedByClient() const { return inputMode_ == VideoInputMode::ManagedByClient; }
     143             :     bool playingFile_ = false;
     144             :     std::atomic_bool paused_ {true};
     145             : 
     146             :     std::function<void(MediaType, bool)> onSuccessfulSetup_;
     147             :     std::function<void(const MediaStream& ms)> recorderCallback_;
     148             : };
     149             : 
     150             : } // namespace video
     151             : } // namespace jami