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Diffstat (limited to 'gr-wxgui/lib/oscope_guts.cc')
-rw-r--r-- | gr-wxgui/lib/oscope_guts.cc | 439 |
1 files changed, 0 insertions, 439 deletions
diff --git a/gr-wxgui/lib/oscope_guts.cc b/gr-wxgui/lib/oscope_guts.cc deleted file mode 100644 index 3e826ff386..0000000000 --- a/gr-wxgui/lib/oscope_guts.cc +++ /dev/null @@ -1,439 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2003,2005,2013 Free Software Foundation, Inc. - * - * This file is part of GNU Radio - * - * GNU Radio is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 3, or (at your option) - * any later version. - * - * GNU Radio is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with GNU Radio; see the file COPYING. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, - * Boston, MA 02110-1301, USA. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <gnuradio/wxgui/oscope_guts.h> -#include <stdexcept> -#include <stdio.h> -#include <algorithm> -#include <unistd.h> -#include <math.h> -#include <assert.h> - -namespace gr { - namespace wxgui { - - /* - * Bad performance if it's large, and flaky triggering if it's too small - */ - static const int OUTPUT_RECORD_SIZE = 1024; // Must be power of 2 - - /* - * For (slow-updated) STRIPCHART triggering, we make the record - * size larger, since we potentially want to be able to "see" - * hours of data. This works as long as the update rates to a - * STRIPCHART are low, which they generally are--that's rather - * what a stripchart is all about! - */ - static const int SCHART_MULT = 8; - - - static inline int - wrap_bi(int buffer_index, int mx) // wrap buffer index - { - return buffer_index & (mx - 1); - } - - static inline int - incr_bi(int buffer_index, int mx) // increment buffer index - { - return wrap_bi(buffer_index + 1, mx); - } - - static inline int - decr_bi(int buffer_index, int mx) // decrement buffer index - { - return wrap_bi(buffer_index - 1, mx); - } - - oscope_guts::oscope_guts(double sample_rate, msg_queue::sptr msgq) - : d_nchannels(1), - d_msgq(msgq), - d_trigger_mode(TRIG_MODE_AUTO), - d_trigger_slope(TRIG_SLOPE_POS), - d_trigger_channel(0), - d_sample_rate(sample_rate), - d_update_rate(20), - d_trigger_level(0), - d_obi(0), - d_state(HOLD_OFF), - d_decimator_count(0), - d_decimator_count_init(1), - d_hold_off_count(0), - d_hold_off_count_init(OUTPUT_RECORD_SIZE/2-1), - d_pre_trigger_count(0), - d_post_trigger_count(0), - d_post_trigger_count_init(OUTPUT_RECORD_SIZE/2) - { - for(int i = 0; i < MAX_CHANNELS; i++) - d_buffer[i] = 0; - - for(int i = 0; i < MAX_CHANNELS; i++) { - d_buffer[i] = new float[OUTPUT_RECORD_SIZE*SCHART_MULT]; - for(int j = 0; j < OUTPUT_RECORD_SIZE*SCHART_MULT; j++) - d_buffer[i][j] = 0.0; - } - - // be sure buffer is full before first write - enter_hold_off(); - update_rate_or_decimation_changed(); - } - - oscope_guts::~oscope_guts() - { - for(int i = 0; i < MAX_CHANNELS; i++) - delete [] d_buffer[i]; - } - - // MANIPULATORS - void - oscope_guts::process_sample(const float *channel_data) - { - d_decimator_count--; - if(d_decimator_count > 0) - return; - - d_decimator_count = d_decimator_count_init; - - if(d_trigger_mode != TRIG_MODE_STRIPCHART) { - for(int i = 0; i < d_nchannels; i++) - d_buffer[i][d_obi] = channel_data[i]; // copy data into buffer - - switch(d_state) { - case HOLD_OFF: - d_hold_off_count--; - if(d_hold_off_count <= 0) - enter_look_for_trigger (); - break; - - case LOOK_FOR_TRIGGER: - if(found_trigger()) - enter_post_trigger(); - break; - - case POST_TRIGGER: - d_post_trigger_count--; - if(d_post_trigger_count <= 0) { - write_output_records(); - enter_hold_off(); - } - break; - - default: - assert(0); - } - - d_obi = incr_bi(d_obi, OUTPUT_RECORD_SIZE); - } - else { - for(int i = 0; i < d_nchannels; i++) { - for(int j = (OUTPUT_RECORD_SIZE*SCHART_MULT)-1; j > 0; j--) { - d_buffer[i][j] = d_buffer[i][j-1]; - } - d_buffer[i][0] = channel_data[i]; - } - d_trigger_off = 0; - write_output_records(); - } - } - - /* - * Functions called on state entry - */ - - void - oscope_guts::enter_hold_off() - { - d_state = HOLD_OFF; - d_hold_off_count = d_hold_off_count_init; - } - - void - oscope_guts::enter_look_for_trigger() - { - d_pre_trigger_count = 0; - d_state = LOOK_FOR_TRIGGER; - } - - void - oscope_guts::enter_post_trigger() - { - d_state = POST_TRIGGER; - d_post_trigger_count = d_post_trigger_count_init; - //ensure that the trigger offset is no more than than half a sample - if(d_trigger_off > .5) - d_trigger_off -= 1; - else - d_post_trigger_count--; - } - - // ---------------------------------------------------------------- - // returns true if trigger found - - bool - oscope_guts::found_trigger() - { - int mx = d_trigger_mode == TRIG_MODE_STRIPCHART ? OUTPUT_RECORD_SIZE*SCHART_MULT : - OUTPUT_RECORD_SIZE; - - float prev_sample = d_buffer[d_trigger_channel][decr_bi(d_obi, mx)]; - float new_sample = d_buffer[d_trigger_channel][d_obi]; - - switch(d_trigger_mode) { - - case TRIG_MODE_AUTO: //too many samples without a trigger - d_pre_trigger_count++; - if(d_pre_trigger_count > OUTPUT_RECORD_SIZE/2) - return true; - - case TRIG_MODE_NORM: //look for trigger - switch(d_trigger_slope) { - - case TRIG_SLOPE_POS: //trigger point in pos slope? - if(new_sample < d_trigger_level || prev_sample >= d_trigger_level) - return false; - break; - - case TRIG_SLOPE_NEG: //trigger point in neg slope? - if(new_sample > d_trigger_level || prev_sample <= d_trigger_level) - return false; - break; - } - - //calculate the trigger offset in % sample - d_trigger_off = (d_trigger_level - prev_sample)/(new_sample - prev_sample); - return true; - - case TRIG_MODE_FREE: //free run mode, always trigger - d_trigger_off = 0; - return true; - - default: - assert(0); - return false; - } - } - - // ---------------------------------------------------------------- - // write output records (duh!) - - void - oscope_guts::write_output_records() - { - int mx; - - mx = d_trigger_mode == TRIG_MODE_STRIPCHART ? - OUTPUT_RECORD_SIZE*SCHART_MULT : OUTPUT_RECORD_SIZE; - - // if the output queue if full, drop the data like its hot. - if(d_msgq->full_p()) - return; - // Build a message to hold the output records - message::sptr msg = - message::make(0, // msg type - d_nchannels, // arg1 for other side - mx, // arg2 for other side - ((d_nchannels * mx) + 1) * sizeof(float)); // sizeof payload - - float *out = (float *)msg->msg(); // get pointer to raw message buffer - - for(int ch = 0; ch < d_nchannels; ch++) { - // note that d_obi + 1 points at the oldest sample in the buffer - for(int i = 0; i < mx; i++) { - out[i] = d_buffer[ch][wrap_bi(d_obi + 1 + i, mx)]; - } - out += mx; - } - //Set the last sample as the trigger offset: - // The non gl scope sink will not look at this last sample. - // The gl scope sink will use this last sample as an offset. - out[0] = d_trigger_off; - d_msgq->handle(msg); // send the msg - } - - // ---------------------------------------------------------------- - - bool - oscope_guts::set_update_rate(double update_rate) - { - d_update_rate = std::min(std::max (1./10., update_rate), d_sample_rate); - update_rate_or_decimation_changed(); - return true; - } - - bool - oscope_guts::set_decimation_count(int decimator_count) - { - decimator_count = std::max(1, decimator_count); - d_decimator_count_init = decimator_count; - update_rate_or_decimation_changed(); - return true; - } - - bool - oscope_guts::set_sample_rate(double sample_rate) - { - d_sample_rate = sample_rate; - return set_update_rate(update_rate()); - } - - void - oscope_guts::update_rate_or_decimation_changed() - { - d_hold_off_count_init = - (int)rint(d_sample_rate / d_update_rate / d_decimator_count_init); - } - - bool - oscope_guts::set_trigger_channel(int channel) - { - if(channel >= 0 && channel < d_nchannels) { - d_trigger_channel = channel; - trigger_changed (); - return true; - } - - return false; - } - - bool - oscope_guts::set_trigger_mode(trigger_mode mode) - { - d_trigger_mode = mode; - trigger_changed(); - return true; - } - - bool - oscope_guts::set_trigger_slope(trigger_slope slope) - { - d_trigger_slope = slope; - trigger_changed(); - return true; - } - - bool - oscope_guts::set_trigger_level(double trigger_level) - { - d_trigger_level = trigger_level; - trigger_changed(); - return true; - } - - bool - oscope_guts::set_trigger_level_auto() - { - // find the level 1/2 way between the min and the max - - float min_v = d_buffer[d_trigger_channel][0]; - float max_v = d_buffer[d_trigger_channel][0]; - - for(int i = 1; i < OUTPUT_RECORD_SIZE; i++) { - min_v = std::min (min_v, d_buffer[d_trigger_channel][i]); - max_v = std::max (max_v, d_buffer[d_trigger_channel][i]); - } - return set_trigger_level((min_v + max_v) * 0.5); - } - - bool - oscope_guts::set_num_channels(int nchannels) - { - if(nchannels > 0 && nchannels <= MAX_CHANNELS) { - d_nchannels = nchannels; - return true; - } - return false; - } - - void - oscope_guts::trigger_changed() - { - enter_look_for_trigger(); - } - - // ACCESSORS - - int - oscope_guts::num_channels() const - { - return d_nchannels; - } - - double - oscope_guts::sample_rate() const - { - return d_sample_rate; - } - - double - oscope_guts::update_rate() const - { - return d_update_rate; - } - - int - oscope_guts::get_decimation_count() const - { - return d_decimator_count_init; - } - - int - oscope_guts::get_trigger_channel() const - { - return d_trigger_channel; - } - - trigger_mode - oscope_guts::get_trigger_mode() const - { - return d_trigger_mode; - } - - trigger_slope - oscope_guts::get_trigger_slope() const - { - return d_trigger_slope; - } - - double - oscope_guts::get_trigger_level() const - { - return d_trigger_level; - } - - int - oscope_guts::get_samples_per_output_record() const - { - int mx; - - mx = OUTPUT_RECORD_SIZE; - if(d_trigger_mode == TRIG_MODE_STRIPCHART) { - mx = OUTPUT_RECORD_SIZE*SCHART_MULT; - } - return mx; - } - - } /* namespace wxgui */ -} /* namespace gr */ |