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Audio and video playback is a process in which audio and video files or audio and video stream data is decoded and played by using an output device, and a playback task is managed.
The audio and video playback APIs are described as follows. For details about the APIs, see the API reference document.
Table 1 Audio and Video Playback APIs
When the input source is an audio or video stream, the playback progress cannot be controlled and the file duration cannot be obtained.
Implement the PlayerCallback callback function for event processing.
class TestPlayerCallback : public PlayerCallback{
void OnPlayBackComplete() override
{
// The implementation code is used to process the event that the file playback is complete.
}
void OnError(int32_t errorType, int32_t errorCode) override
{
// Implement the code processing error event.
}
void OnInfo(int type, int extra) override
{
//Implement the code to process common events.
}
void OnRewindToComplete() override
{
//Implement the event that the code processing progress control is complete.
}
};
Create a player instance, set the playback source, and start playback.
Player *player = Player::CreatePlayer();
std::shared_ptr<PlayerCallback> callback = std::make_shared<TestPlayerCallback>();
player->SetPlayerCallback(callback);// Set player callback.
std::string uri(filePath);// filePath is the local file path.
Source source(uri);//Save the URI to the source instance.
player->SetSource(source);//Set the source to the player.
player->SetVideoSurface(surface);//Set the playback window.
player->Prepare(); // Prepare for the playback.
player->Play(); //Starts playback.
Perform playback control based on the scenario.
player->SetVolume(lvolume, rvolume);//Set the left and right sound channels.
player->EnableSingleLooping(true);// Set cyclic playback.
player->Pause(); //Pause.
player->Play(); //Continue the playback.
Release resources after the playback task is complete.
player->Stop(); //Stop the playback.
player->Release(); // Release resources.
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