diff options
Diffstat (limited to 'libs/midi++2/mtc.cc')
| -rw-r--r-- | libs/midi++2/mtc.cc | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/libs/midi++2/mtc.cc b/libs/midi++2/mtc.cc index 7f7506c344..8aa7556e46 100644 --- a/libs/midi++2/mtc.cc +++ b/libs/midi++2/mtc.cc @@ -46,7 +46,7 @@ Parser::possible_mtc (MIDI::byte *sysex_buf, size_t msglen) /* full MTC */ - fake_mtc_time[0] = sysex_buf[8]; // frames + fake_mtc_time[0] = sysex_buf[8]; // samples fake_mtc_time[1] = sysex_buf[7]; // minutes fake_mtc_time[2] = sysex_buf[6]; // seconds fake_mtc_time[3] = (sysex_buf[5] & 0x1f); // hours @@ -86,8 +86,8 @@ Parser::reset_mtc_state () expected_mtc_quarter_frame_code = 0; memset (_mtc_time, 0, sizeof (_mtc_time)); memset (_qtr_mtc_time, 0, sizeof (_mtc_time)); - consecutive_qtr_frame_cnt = 0; - last_qtr_frame = 0; + consecutive_qtr_sample_cnt = 0; + last_qtr_sample = 0; } void @@ -95,46 +95,46 @@ Parser::process_mtc_quarter_frame (MIDI::byte *msg) { int which_quarter_frame = (msg[1] & 0xf0) >> 4; - /* Is it an expected frame? - Remember, the first can be frame 7 or frame 0, + /* Is it an expected sample? + Remember, the first can be sample 7 or sample 0, depending on the direction of the MTC generator ... */ #ifdef DEBUG_MTC cerr << "MTC: (state = " << _mtc_running << ") " << which_quarter_frame << " vs. " << expected_mtc_quarter_frame_code - << " consecutive ? " << consecutive_qtr_frame_cnt + << " consecutive ? " << consecutive_qtr_sample_cnt << endl; #endif if (_mtc_running == MTC_Stopped) { - /* we are stopped but are seeing qtr frame messages */ + /* we are stopped but are seeing qtr sample messages */ - if (consecutive_qtr_frame_cnt == 0) { + if (consecutive_qtr_sample_cnt == 0) { /* first quarter frame */ if (which_quarter_frame != 0 && which_quarter_frame != 7) { - last_qtr_frame = which_quarter_frame; - consecutive_qtr_frame_cnt++; + last_qtr_sample = which_quarter_frame; + consecutive_qtr_sample_cnt++; } - // cerr << "first seen qframe = " << (int) last_qtr_frame << endl; + // cerr << "first seen qframe = " << (int) last_qtr_sample << endl; return; - } else if (consecutive_qtr_frame_cnt == 1) { + } else if (consecutive_qtr_sample_cnt == 1) { /* third quarter frame */ #ifdef DEBUG_MTC cerr << "second seen qframe = " << (int) which_quarter_frame << endl; #endif - if (last_qtr_frame < which_quarter_frame) { + if (last_qtr_sample < which_quarter_frame) { _mtc_running = MTC_Forward; - } else if (last_qtr_frame > which_quarter_frame) { + } else if (last_qtr_sample > which_quarter_frame) { _mtc_running = MTC_Backward; } #ifdef DEBUG_MTC @@ -174,7 +174,7 @@ Parser::process_mtc_quarter_frame (MIDI::byte *msg) if (which_quarter_frame != expected_mtc_quarter_frame_code) { - consecutive_qtr_frame_cnt = 0; + consecutive_qtr_sample_cnt = 0; #ifdef DEBUG_MTC cerr << "MTC: (state = " << _mtc_running << ") " @@ -189,7 +189,7 @@ Parser::process_mtc_quarter_frame (MIDI::byte *msg) if (res.get_value_or (false)) { - /* no error, reset next expected frame */ + /* no error, reset next expected sample */ switch (_mtc_running) { case MTC_Forward: @@ -219,10 +219,10 @@ Parser::process_mtc_quarter_frame (MIDI::byte *msg) return; } - /* skip counts as an error ... go back to waiting for the first frame */ + /* skip counts as an error ... go back to waiting for the first sample */ #ifdef DEBUG_MTC - cerr << "Skipped MTC qtr frame, return to stopped state" << endl; + cerr << "Skipped MTC qtr sample, return to stopped state" << endl; #endif reset_mtc_state (); mtc_status (MTC_Stopped); @@ -231,8 +231,8 @@ Parser::process_mtc_quarter_frame (MIDI::byte *msg) } else { - /* received qtr frame matched expected */ - consecutive_qtr_frame_cnt++; + /* received qtr sample matched expected */ + consecutive_qtr_sample_cnt++; } } @@ -244,11 +244,11 @@ Parser::process_mtc_quarter_frame (MIDI::byte *msg) #endif switch (which_quarter_frame) { - case 0: // frames LS nibble + case 0: // samples LS nibble _qtr_mtc_time[0] |= msg[1] & 0xf; break; - case 1: // frames MS nibble + case 1: // samples MS nibble _qtr_mtc_time[0] |= (msg[1] & 0xf)<<4; break; @@ -307,7 +307,7 @@ Parser::process_mtc_quarter_frame (MIDI::byte *msg) and signal anyone who wants to know the time. */ - if (consecutive_qtr_frame_cnt >= 8) { + if (consecutive_qtr_sample_cnt >= 8) { memcpy (_mtc_time, _qtr_mtc_time, sizeof (_mtc_time)); memset (_qtr_mtc_time, 0, sizeof (_qtr_mtc_time)); if (!_mtc_locked) { @@ -331,7 +331,7 @@ Parser::process_mtc_quarter_frame (MIDI::byte *msg) and signal anyone who wants to know the time. */ - if (consecutive_qtr_frame_cnt >= 8) { + if (consecutive_qtr_sample_cnt >= 8) { memcpy (_mtc_time, _qtr_mtc_time, sizeof (_mtc_time)); memset (_qtr_mtc_time, 0, sizeof (_qtr_mtc_time)); if (!_mtc_locked) { |