Set number of burst for data

codec2talkie/src/main/java/com/radio/codec2talkie/protocol/Freedv.java

@@ -53,12 +53,12 @@ public class Freedv implements Protocol {
 
         Log.i(TAG, "Using freedv mode " + AudioTools.getFreedvModeAsText(sharedPreferences));
 
-        _freedv = Codec2.freedvCreate(mode, isSquelchEnabled, squelchSnr);
+        _freedv = Codec2.freedvCreate(mode, isSquelchEnabled, squelchSnr, 0);   // unset for speech
         _modemTxBuffer = new short[Codec2.freedvGetNomModemSamples(_freedv)];
         _speechRxBuffer = new short[Codec2.freedvGetMaxSpeechSamples(_freedv)];
         _speechSamples  = ShortBuffer.allocate(1024*10);
 
-        _freedvData = Codec2.freedvCreate(dataMode, isSquelchEnabled, squelchSnr);
+        _freedvData = Codec2.freedvCreate(dataMode, isSquelchEnabled, squelchSnr, 1);
         _dataBuffer = new byte[Codec2.freedvGetBitsPerModemFrame(_freedvData) / 8];
         _dataSamplesBuffer = new short[Codec2.freedvGetNTxSamples(_freedvData)];
         _dataSamples  = ShortBuffer.allocate(1024*10);

codec2talkie/src/main/res/xml/preferences_sound_modem.xml

@@ -123,5 +123,4 @@
         app:dependency="ports_sound_modem_freedv_enable_squelch"
         app:defaultValue="0.0">
     </ListPreference>
-
 </PreferenceScreen>

libcodec2-android/src/main/cpp/Codec2JNI.cpp

@@ -99,7 +99,7 @@ namespace Java_com_ustadmobile_codec2_Codec2 {
         return reinterpret_cast<jlong>(conFsk);
     }
 
-    static jlong freedvCreate(JNIEnv *env, jclass clazz, int mode, jboolean isSquelchEnabled, jfloat squelchSnr) {
+    static jlong freedvCreate(JNIEnv *env, jclass clazz, int mode, jboolean isSquelchEnabled, jfloat squelchSnr, jlong framesPerBurst) {
         struct ContextFreedv *conFreedv;
         conFreedv = (struct ContextFreedv *) malloc(sizeof(struct ContextFreedv));
         conFreedv->freeDv = freedv_open(mode);
@@ -114,8 +114,14 @@ namespace Java_com_ustadmobile_codec2_Codec2 {
         conFreedv->rawDataSamples = static_cast<short *>(malloc(
                 freedv_get_n_tx_modem_samples(conFreedv->freeDv) * sizeof(short)));
         // squelch
-        freedv_set_squelch_en(conFreedv->freeDv, isSquelchEnabled);
-        freedv_set_snr_squelch_thresh(conFreedv->freeDv, squelchSnr);
+        if (isSquelchEnabled) {
+            freedv_set_squelch_en(conFreedv->freeDv, isSquelchEnabled);
+            freedv_set_snr_squelch_thresh(conFreedv->freeDv, squelchSnr);
+        }
+        // frames per single burst, 0 - not specified
+        if (framesPerBurst > 0) {
+            freedv_set_frames_per_burst(conFreedv->freeDv, framesPerBurst);
+        }
         return reinterpret_cast<jlong>(conFreedv);
     }
 
@@ -362,7 +368,7 @@ namespace Java_com_ustadmobile_codec2_Codec2 {
         {"fskSamplesPerSymbol", "(J)I",         (void *) fskSamplesPerSymbol},
         {"fskNin", "(J)I",                      (void *) fskNin},
         // freedv
-        {"freedvCreate", "(IZF)J",              (void *)freedvCreate},
+        {"freedvCreate", "(IZFJ)J",             (void *)freedvCreate},
         {"freedvDestroy", "(J)I",               (void *)freedvDestroy},
         {"freedvGetMaxSpeechSamples", "(J)I",   (void *)freedvGetMaxSpeechSamples},
         {"freedvGetMaxModemSamples", "(J)I",    (void *)freedvGetMaxModemSamples},

libcodec2-android/src/main/java/com/ustadmobile/codec2/Codec2.java

@@ -63,7 +63,7 @@ public class Codec2 {
     public native static long fskDemodulate(long conFsk, short[] inputSamples, byte[] outputBits);
 
     // freedv
-    public native static long freedvCreate(int mode, boolean isSquelchEnabled, float squelchSnr);
+    public native static long freedvCreate(int mode, boolean isSquelchEnabled, float squelchSnr, long framesPerBurst);
     public native static int freedvDestroy(long conFreedv);
 
     public native static int freedvGetMaxSpeechSamples(long conFreedv);