85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
/* channel.h
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This file is part of a program that implements a Software-Defined Radio.
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Copyright (C) 2013 Warren Pratt, NR0V
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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The author can be reached by email at
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warren@wpratt.com
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*/
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#ifndef _setupchannel_h
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#define _setupchannel_h
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#include "comm.h"
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struct _ch
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{
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int type;
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volatile long run; // when 1, thread loops; when 0, thread terminates
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volatile long exchange; // when 1, fexchange() operates; when 0, it just returns
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int in_rate; // input samplerate
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int out_rate; // output samplerate
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int in_size; // input buffsize (complex samples) in a fexchange() operation
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int dsp_rate; // sample rate for mainstream dsp processing
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int dsp_size; // number complex samples processed per buffer in mainstream dsp processing
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int dsp_insize; // size (complex samples) of the output of the r1 (input) buffer
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int dsp_outsize; // size (complex samples) of the input of the r2 (output) buffer
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int out_size; // output buffsize (complex samples) in a fexchange() operation
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CRITICAL_SECTION csDSP; // used to block dsp while parameters are updated or buffers flushed
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CRITICAL_SECTION csEXCH; // used to block fexchange() while parameters are updated or buffers flushed
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int state; // 0 for channel OFF; 1 for channel ON
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double tdelayup;
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double tslewup;
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double tdelaydown;
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double tslewdown;
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int bfo; // 'block_for_output', block fexchange until output is available
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volatile long flushflag;
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struct //io buffers
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{
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IOB pc, pd, pe, pf; // copies for console calls, dsp, exchange, and flush thread
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volatile long ch_upslew;
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} iob;
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};
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extern struct _ch ch[];
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PORT void OpenChannel (int channel, int in_size, int dsp_size, int input_samplerate, int dsp_rate, int output_samplerate, int type, int state, double tdelayup, double tslewup, double tdelaydown, double tslewdown, int bfo);
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PORT void CloseChannel (int channel);
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extern void flushChannel (void* p);
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PORT void SetType (int channel, int type);
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PORT void SetInputBuffsize (int channel, int in_size);
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PORT void SetDSPBuffsize (int channel, int dsp_size);
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PORT void SetInputSamplerate (int channel, int samplerate);
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PORT void SetDSPSamplerate (int channel, int samplerate);
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PORT void SetOutputSamplerate (int channel, int samplerate);
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PORT void SetAllRates (int channel, int in_rate, int dsp_rate, int out_rate);
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PORT int SetChannelState (int channel, int state, int dmode);
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#endif
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