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#39 WIP - adds support for timestamped complex buffers so that decoded

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messages and events can be accurately timestamped, and more importantly,
allocated traffic channels can request to be pre-loaded with buffered
samples to ensure that traffic channels don't miss any samples that
are currently missed due processing latency inherent in current buffer
sizing.  This should reduce the clipping of starting messages or voice
on the traffic channels.

Restructures processing path for tuner frequency and sample rate change
events.  The tuner now embeds these events in the sequence of buffers
that are generated immediately after the event occurs since those are
the buffers that will be impacted by the change.  Previously, the change
event would be broadcast throughout the system and would impact any
buffered/cached buffers.  This also reduces the number of source event
change listeners that have to be managed.  Note: this change is not yet
implemented in all tuners ... only in the TestTuner implementation.

Updates the polyphase channelizer to now buffer channel results and then
dispatch the buffer to the channel output processors to improve efficiency
of using float arrays versus single value complex float processing.
This commit is contained in:
Denny
2018-01-13 09:10:57 -05:00
parent d2e7f008c8
commit 05fa5c25fd
25 changed files with 962 additions and 277 deletions
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15
src/main/java/io/github/dsheirer/source/SourceEvent.java
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@@ -30,6 +30,7 @@ public class SourceEvent
NOTIFICATION_FREQUENCY_CHANGE,
NOTIFICATION_FREQUENCY_CORRECTION_CHANGE,
NOTIFICATION_SAMPLE_RATE_CHANGE,
NOTIFICATION_STOP_SAMPLE_STREAM,
REQUEST_CHANNEL_FREQUENCY_CORRECTION_CHANGE,
REQUEST_FREQUENCY_CHANGE,
@@ -38,7 +39,7 @@ public class SourceEvent
REQUEST_STOP_SAMPLE_STREAM;
public static EnumSet<Event> NOTIFICATION_EVENTS =
EnumSet.range(NOTIFICATION_CHANNEL_COUNT_CHANGE, NOTIFICATION_SAMPLE_RATE_CHANGE);
EnumSet.range(NOTIFICATION_CHANNEL_COUNT_CHANGE, NOTIFICATION_STOP_SAMPLE_STREAM);
public static EnumSet<Event> REQUEST_EVENTS =
EnumSet.range(NOTIFICATION_CHANNEL_COUNT_CHANGE, NOTIFICATION_SAMPLE_RATE_CHANGE);
}
@@ -201,7 +202,7 @@ public class SourceEvent
/**
* Creates a new start sample stream request event
*/
public static SourceEvent startSampleStream(Source source)
public static SourceEvent startSampleStreamRequest(Source source)
{
return new SourceEvent(Event.REQUEST_START_SAMPLE_STREAM, source);
}
@@ -209,11 +210,19 @@ public class SourceEvent
/**
* Creates a new stop sample stream request event
*/
public static SourceEvent stopSampleStream(Source source)
public static SourceEvent stopSampleStreamRequest(Source source)
{
return new SourceEvent(Event.REQUEST_STOP_SAMPLE_STREAM, source);
}
/**
* Creates a new stop sample stream request event
*/
public static SourceEvent stopSampleStreamNotification(Source source)
{
return new SourceEvent(Event.NOTIFICATION_STOP_SAMPLE_STREAM, source);
}
/**
* Creates a request to dispose of the source. This is normally used for TunerChannelSource to notify the
* parent source manager that the channel is no longer needed