TsgcAudioPlayerMCI plays an audio file through the Windows MCI API. It listens for the real end-of-playback notification rather than guessing from a duration, which is what lets the voice components resume listening at exactly the right moment.
Audio playback for the cloud speech components. Assign it to a Google or Amazon text-to-speech component and the synthesised audio plays as soon as it arrives.
TsgcAudioPlayerMCI
Audio playback
Win32 and Win64
sgcAI is self-contained. This component ships inside sgcAI together with the sgcWebSockets Core runtime it is built on, so there is no base license to buy.
One method and two events. Usually you assign it to a speech component and never call it directly.
uses
sgcAI, sgcAI_AudioPlayer_MCI;
var
oPlayer: TsgcAudioPlayerMCI;
begin
oPlayer := TsgcAudioPlayerMCI.Create(nil);
oPlayer.Play('speech.mp3');
// Normally it is the output of a cloud speech component:
sgcTextToSpeechGoogle1.AudioPlayer := oPlayer;
sgcTextToSpeechAmazon1.AudioPlayer := oPlayer;
end;// includes: sgcAI.hpp, sgcAI_AudioPlayer_MCI.hpp
TsgcAudioPlayerMCI *oPlayer = new TsgcAudioPlayerMCI(NULL);
oPlayer->Play("speech.mp3");
sgcTextToSpeechGoogle1->AudioPlayer = oPlayer;
sgcTextToSpeechAmazon1->AudioPlayer = oPlayer;The members you reach for most often.
Play(aFileName) starts playback of any format the installed MCI drivers understand, which covers WAV and MP3 on a standard Windows installation.
The component allocates a hidden window and waits for the MCI notification, so the stop event fires when the audio genuinely finished, not after an estimated duration.
OnStart and OnStop bracket playback. The voice components hook OnStop to restart microphone capture, which is what makes a hands-free conversation flow.
Assign it to AudioPlayer on TsgcTextToSpeechGoogle or TsgcTextToSpeechAmazon. The system speech component needs no player, it speaks directly.
It is a general purpose player, so it is also useful for notification sounds or for replaying a recording captured by one of the recorder components.
Version reports the component version at design time, the same read-only property every sgc component publishes.
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