From 44fa0c5e5321775080dd42c151bda9a61fc35b95 Mon Sep 17 00:00:00 2001
From: Shmuel H <shmuelhazan0@gmail.com>
Date: Mon, 6 Nov 2017 22:41:13 +0200
Subject: [PATCH] AudioJack: Basic implementation of capture (without
 AUDIO_PORT_SUPPORT)

---
 include/AudioJack.h          |  5 +++++
 src/core/audio/AudioJack.cpp | 41 ++++++++++++++++++++++++++++++++++--
 2 files changed, 44 insertions(+), 2 deletions(-)

diff --git a/include/AudioJack.h b/include/AudioJack.h
index 9bbb3bd48..54e62ab7c 100644
--- a/include/AudioJack.h
+++ b/include/AudioJack.h
@@ -38,6 +38,8 @@
 #include <QtCore/QList>
 #include <QtCore/QMap>
 
+#include <memory>
+
 #include "AudioDevice.h"
 #include "AudioDeviceSetupWidget.h"
 
@@ -110,7 +112,10 @@ private:
 
 	MidiJack *m_midiClient;
 	QVector<jack_port_t *> m_outputPorts;
+	QVector<jack_port_t *> m_inputPorts;
 	jack_default_audio_sample_t * * m_tempOutBufs;
+	jack_default_audio_sample_t * * m_tempInBufs;
+	std::unique_ptr<sampleFrame[]> m_inBuffer;
 	surroundSampleFrame * m_outBuf;
 
 	f_cnt_t m_framesDoneInCurBuf;
diff --git a/src/core/audio/AudioJack.cpp b/src/core/audio/AudioJack.cpp
index 24f7b2f4f..012209ee9 100644
--- a/src/core/audio/AudioJack.cpp
+++ b/src/core/audio/AudioJack.cpp
@@ -47,7 +47,8 @@ AudioJack::AudioJack( bool & _success_ful, Mixer*  _mixer ) :
 	AudioDevice( tLimit<int>( ConfigManager::inst()->value(
 					"audiojack", "channels" ).toInt(),
 					DEFAULT_CHANNELS, SURROUND_CHANNELS ),
-								_mixer ),
+                    _mixer,
+                    true /* supportsCapture */),
 	m_client( NULL ),
 	m_active( false ),
 	m_midiClient( NULL ),
@@ -187,11 +188,28 @@ bool AudioJack::initJackClient()
 						JackPortIsOutput, 0 ) );
 		if( m_outputPorts.back() == NULL )
 		{
-			printf( "no more JACK-ports available!\n" );
+            printf( "no more out JACK-ports available!\n" );
 			return false;
 		}
 	}
 
+    // Register In ports
+    for( ch_cnt_t ch = 0; ch < channels(); ++ch )
+    {
+        QString name = QString( "master in " ) +
+                ( ( ch % 2 ) ? "R" : "L" ) +
+                QString::number( ch / 2 + 1 );
+        m_inputPorts.push_back( jack_port_register( m_client,
+                        name.toLatin1().constData(),
+                        JACK_DEFAULT_AUDIO_TYPE,
+                        JackPortIsInput, 0 ) );
+        if( m_inputPorts.back() == NULL )
+        {
+            printf( "no more in JACK-ports available!\n" );
+            return false;
+        }
+    }
+
 	return true;
 }
 
@@ -351,6 +369,10 @@ int AudioJack::processCallback( jack_nframes_t _nframes, void * _udata )
 		m_tempOutBufs[c] =
 			(jack_default_audio_sample_t *) jack_port_get_buffer(
 												m_outputPorts[c], _nframes );
+        m_tempInBufs[c] =
+                (jack_default_audio_sample_t *) jack_port_get_buffer(
+                                                    m_inputPorts[c], _nframes );
+
 	}
 
 #ifdef AUDIO_PORT_SUPPORT
@@ -405,6 +427,21 @@ int AudioJack::processCallback( jack_nframes_t _nframes, void * _udata )
 		}
 	}
 
+
+	m_inBuffer.reset (new sampleFrame[_nframes]);
+
+	const float gain = mixer()->masterGain();
+	for( int c = 0; c < channels(); ++c ) {
+		jack_default_audio_sample_t *channel_buffer = m_tempInBufs[c];
+
+		for( jack_nframes_t frame = 0; frame < _nframes; ++frame )
+		{
+			m_inBuffer[frame][c] = channel_buffer[frame] /*/ gain*/;
+		}
+	}
+
+	mixer()->pushInputFrames (m_inBuffer.get (), _nframes);
+
 	if( m_stopped == true )
 	{
 		for( int c = 0; c < channels(); ++c )