コード例 #1
0
ファイル: decklink.cpp プロジェクト: mikaelpfi/exacore
        void setup_audio( ) {
            /* FIXME hard coded default */
            n_channels = 2; 

            audio_in_pipe = new Pipe<AudioPacket *>(OUT_PIPE_SIZE);

            /* FIXME magic 29.97 related number */
            /* Set up empty audio packet for prerolling */
            current_audio_pkt = new AudioPacket(48000, n_channels, 2, 25626);
            samples_written_from_current_audio_pkt = 0;

            assert(deckLinkOutput != NULL);

            if (deckLinkOutput->SetAudioCallback(this) != S_OK) {
                throw std::runtime_error(
                    "Failed to set DeckLink audio callback"
                );
            }

            if (deckLinkOutput->EnableAudioOutput( 
                    bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger, 
                    n_channels, bmdAudioOutputStreamContinuous) != S_OK) {
                throw std::runtime_error(
                    "Failed to enable DeckLink audio output"
                );
            }

            audio_preroll_done = 0;

            if (deckLinkOutput->BeginAudioPreroll( ) != S_OK) {
                throw std::runtime_error(
                    "Failed to begin DeckLink audio preroll"
                );
            }

            while (audio_preroll_done == 0) { 
                /* FIXME: busy wait */
            }

            if (deckLinkOutput->EndAudioPreroll( ) != S_OK) {
                throw std::runtime_error(
                    "Failed to end DeckLink audio preroll"
                );
            }
        }
コード例 #2
0
ファイル: decklink.cpp プロジェクト: DigiDaz/exacore
        void setup_audio( ) {
            IOAudioPacket preroll_audio(8008, n_channels);
            preroll_audio.zero( );

            audio_in_pipe = new Pipe<IOAudioPacket *>(OUT_PIPE_SIZE);
            audio_fifo = new AudioFIFO<int16_t>(n_channels);
            audio_fifo->add_packet(&preroll_audio);

            assert(deckLinkOutput != NULL);

            if (deckLinkOutput->SetAudioCallback(this) != S_OK) {
                throw std::runtime_error(
                    "Failed to set DeckLink audio callback"
                );
            }

            if (deckLinkOutput->EnableAudioOutput( 
                    bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger, 
                    n_channels, bmdAudioOutputStreamContinuous) != S_OK) {
                throw std::runtime_error(
                    "Failed to enable DeckLink audio output"
                );
            }

            audio_preroll_done = 0;

            if (deckLinkOutput->BeginAudioPreroll( ) != S_OK) {
                throw std::runtime_error(
                    "Failed to begin DeckLink audio preroll"
                );
            }

            while (audio_preroll_done == 0) { 
                /* FIXME: busy wait */
            }

            if (deckLinkOutput->EndAudioPreroll( ) != S_OK) {
                throw std::runtime_error(
                    "Failed to end DeckLink audio preroll"
                );
            }
        }
コード例 #3
0
	bool start( unsigned preroll )
	{
		m_displayMode = getDisplayMode();
		if ( !m_displayMode )
		{
			mlt_log_error( &m_consumer, "Profile is not compatible with decklink.\n" );
			return false;
		}
		
		// Set the video output mode
		if ( S_OK != m_deckLinkOutput->EnableVideoOutput( m_displayMode->GetDisplayMode(), bmdVideoOutputFlagDefault) )
		{
			mlt_log_error( &m_consumer, "Failed to enable video output\n" );
			return false;
		}
		
		// Set the audio output mode
		m_channels = 2;
		if ( S_OK != m_deckLinkOutput->EnableAudioOutput( bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger,
			m_channels, bmdAudioOutputStreamContinuous ) )
		{
			mlt_log_error( &m_consumer, "Failed to enable audio output\n" );
			stop();
			return false;
		}
		m_fifo = sample_fifo_init();
		
		// Preroll
		m_isPrerolling = true;
		m_prerollCounter = 0;
		m_preroll = preroll < PREROLL_MINIMUM ? PREROLL_MINIMUM : preroll;
		m_count = 0;
		m_deckLinkOutput->BeginAudioPreroll();
		
		return true;
	}