Line data    Source code

       1             : /*
       2             :  *  Copyright (C) 2004-2024 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 {
      65             :         return decOpts_;
      66             :     }
      67         113 :     std::shared_future<DeviceParams> getParams() const {
      68         113 :         return futureDecOpts_;
      69             :     }
      70             : 
      71             :     MediaStream getInfo() const;
      72             : 
      73             :     void setSink(const std::string& sinkId);
      74             :     void updateStartTime(int64_t startTime);
      75             :     void configureFilePlayback(const std::string& path,
      76             :                                std::shared_ptr<MediaDemuxer>& demuxer,
      77             :                                int index);
      78             :     void flushBuffers();
      79          20 :     void setPaused(bool paused) { paused_ = paused; }
      80             :     void setSeekTime(int64_t time);
      81             :     void setupSink(const int width, const int height);
      82             :     void stopSink();
      83             : 
      84             :     void setRecorderCallback(const std::function<void(const MediaStream& ms)>& cb);
      85             : 
      86             : #if VIDEO_CLIENT_INPUT
      87             :     /*
      88             :      * these functions are used to pass buffer from/to the daemon
      89             :      * on the Android and UWP builds
      90             :      */
      91             :     void* obtainFrame(int length);
      92             :     void releaseFrame(void* frame);
      93             : #else
      94             :     void stopInput();
      95             : #endif
      96             : 
      97             :     void setSuccessfulSetupCb(const std::function<void(MediaType, bool)>& cb)
      98             :     {
      99             :         onSuccessfulSetup_ = cb;
     100             :     }
     101             : 
     102             :     /**
     103             :      * Restart stopped video input
     104             :      * @note if a media is removed, then re-added in a conference, the loop will be stopped
     105             :      * and this input must be restarted
     106             :      */
     107             :     void restart();
     108             : 
     109             : private:
     110             :     NON_COPYABLE(VideoInput);
     111             : 
     112             :     std::shared_future<DeviceParams> switchInput(const std::string& resource);
     113             : 
     114             :     std::string resource_;
     115             :     std::atomic<bool> switchPending_ = {false};
     116             :     std::atomic_bool isStopped_ = {false};
     117             : 
     118             :     DeviceParams decOpts_;
     119             :     std::promise<DeviceParams> foundDecOpts_;
     120             :     std::shared_future<DeviceParams> futureDecOpts_;
     121             :     bool emulateRate_ = false;
     122             : 
     123             :     std::atomic_bool decOptsFound_ {false};
     124             :     void foundDecOpts(const DeviceParams& params);
     125             : 
     126             :     void clearOptions();
     127             : 
     128             :     // true if decOpts_ is ready to use, false if using promise/future
     129             :     bool initCamera(const std::string& device);
     130             :     bool initFile(std::string path);
     131             : 
     132             : #ifdef __APPLE__
     133             :     bool initAVFoundation(const std::string& display);
     134             : #elif defined(WIN32)
     135             :     bool initWindowsGrab(const std::string& display);
     136             : #else
     137             :     bool initLinuxGrab(const std::string& display);
     138             : #endif
     139             : 
     140             :     bool isCapturing() const noexcept;
     141             :     void startLoop();
     142             : 
     143             :     void switchDevice();
     144             :     bool capturing_ {false};
     145             :     void createDecoder();
     146             :     void deleteDecoder();
     147             :     std::unique_ptr<MediaDecoder> decoder_;
     148             :     std::shared_ptr<SinkClient> sink_;
     149             :     ThreadLoop loop_;
     150             : 
     151             :     // for ThreadLoop
     152             :     bool setup();
     153             :     void process();
     154             :     void cleanup();
     155             : 
     156             :     bool captureFrame();
     157             : 
     158             :     int rotation_ {0};
     159             :     std::shared_ptr<AVBufferRef> displayMatrix_;
     160             :     void setRotation(int angle);
     161             :     VideoInputMode inputMode_;
     162         409 :     inline bool videoManagedByClient() const
     163             :     {
     164         409 :         return inputMode_ == VideoInputMode::ManagedByClient;
     165             :     }
     166             :     bool playingFile_ = false;
     167             :     std::atomic_bool paused_ {true};
     168             : 
     169             :     std::function<void(MediaType, bool)> onSuccessfulSetup_;
     170             :     std::function<void(const MediaStream& ms)> recorderCallback_;
     171             : };
     172             : 
     173             : } // namespace video
     174             : } // namespace jami