Commit Graph

17 Commits

Author SHA1 Message Date
dennis.sheirer
1c0da75c01 P25 - adds direct frequency control for the C4FM symbol filter to adjust the tuner channel for frequency correction. 2015-01-19 16:20:37 +00:00
dennis.sheirer
1d77f28958 P25 work in progress - final check-in of channel state and activity summary processing of TSBK and PDU messages and event generation. 2014-12-21 14:30:06 +00:00
dennis.sheirer
ba053457bd Out of memory fixes and updates to the P25 decoder.
Memory Fixes
Decreased the decimation process repeat timing so that it runs smaller work chunks more often
Decreased scheduled thread pool to 2 hot threads
Wrapped all scheduled thread pool runnables in try/catch blocks so that an exception doesn't kill the sample buffer processing thread and cause the buffer to grow unbounded.

P25 updates
Moved TSBK crc checks into the message framer so that message corrections don't occur after the message is constructed.
Added more functionality to the channel state for handling registrations and call events.
2014-12-19 23:59:38 +00:00
dennis.sheirer
170688b95e P25 Work in progress. Adds CRC checking to NID/DUID. Adds limiter to trellis decoder to prevent it from decoding an excessive error message. Updates channel state with initial handling/generation of call events. 2014-12-14 02:34:19 +00:00
dennis.sheirer
0b535d8143 Decoder icon updates. Changed from colorized icons to a standard set of decoder icons and will now color the text of the channel node to reflect the status (green - processing, red - no tuner, no color - disabled ) 2014-12-06 20:20:50 +00:00
dennis.sheirer
d34abdd2fa Refactoring to use COMPLEX and REAL sample terms throughout 2014-10-31 13:58:20 +00:00
dennis.sheirer
d1ab661754 Frequency limit for Automatic Frequency Control to prevent the controller from walking too far.
Defaults to a maximum of 3kHz, but can be set to as high as 15 kHz.
2014-10-26 22:36:06 +00:00
dennis.sheirer
e61c3a891c Memory/CPU performance improvement and Audio/Mixer source restructuring
Converted to use float primitives and to keep samples in buffer format until the sample rate is decimated to 48kHz.  
Added new non-recursive, CIC decimation filter -- untested

Updated sound card/mixer input source management.  Now testing for mono/stereo support for each card and limiting channel choices accordingly.  Separated the mixersource into a ComplexMixer and and SimplexMixerSource.  The ComplexMixer is used for sound card based tuners like the funcube.  The SimplexMixerSource is used for demodulated sound card inputs.

Interfaces for sample handling - standardized on using 'Complex' to indicate I/Q samples and 'Simplex' to indicate demodulated float samples.  The processing chain now accepts either a decimated (48k) list of complex samples from a tuner channel source, or a 48k simplex buffer (array of demodulated float samples).

Resolved issue with HackRF tuner not applying tuner configuration information.
2014-10-26 10:11:30 +00:00
dennis.sheirer
61ecb5abf2 Adds an AM Demodulator to the list of available decoders. 2014-10-11 18:00:49 +00:00
dennis.sheirer
550aed79d4 Changed FrequencyChangeListener interface to an event so that I could describe what event was causing the frequency change and to broadcast frequency and sample rate error values.
R820T - added a couple more sample rate settings to the enum and modified the periodic sample rate info logger.
2014-09-27 09:46:18 +00:00
dennis.sheirer
e441ebf0c9 Changed to slf4j logging framework
Enhanced error handling/logging in RTL2832 eeprom device descriptor read method for troubleshooting issue present in some R820T tuners.
2014-09-20 10:04:04 +00:00
dennis.sheirer
0f43c7ed22 Automatic Frequency Control enhancement. Provides default AFC and ability to disable in the Decoder tab of each channel. Spectral display includes visual indicators of frequency center (grey) and current AFC offset (yellow). 2014-09-11 22:46:05 +00:00
dennis.sheirer
4e0fd9b7b0 Channel Spectral Display
- Adds Channel Spectrum tab to display FFT of the audio output of the currently selected channel
 - Upgrades to JTransforms 3.0 FFT library
 - Adds three new context menus to main and channel spectral displays:
   -- Baseline - affects the vertical rendering baseline of the FFT
   -- Amplification - affects the vertical height of each FFT bin
   -- Averaging - affects how many FFTs are averaged to produce the display
2014-09-06 14:58:05 +00:00
dennis.sheirer
44faeb9351 IQ recording file playback partial checkin.
NOTE: only the gui components and settings handling have been implemented.  Actual recording playback is not yet implemented.

Partial checkin of initial P25 decoder development.  

NOTE: P25 decoder is not yet functional.
2014-08-02 15:16:12 +00:00
dennis.sheirer
35a2cebe03 Converted frequency to long primitive type (from integer) in anticipation of HackRF support which requires frequencies greater than 2.147 GHz, which is the max hertz value that can be represented by an integer primitive. 2014-07-08 14:40:11 +00:00
dennis.sheirer
27b9a741a7 Removed debug logging. 2014-05-02 12:42:36 +00:00
dennis.sheirer
3dfedcf8d1 Initial code check in continued 2014-04-26 19:48:24 +00:00