| -rw-r--r-- | lib/message.cc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/message.cc b/lib/message.cc index 8f9e68a..6a5cfd6 100644 --- a/lib/message.cc +++ b/lib/message.cc @@ -1,194 +1,195 @@ #include <algorithm> #include <iterator> +#include <cassert> #include <midillo/message.h> #include <midillo/util.h> #include <midillo/exception.h> namespace midillo { using std::copy; using std::ostream_iterator; unsigned long message_t::calculate_save_size(int& rs) const { unsigned long rv = 0; if(status!=rs) { ++rv; rs = status; }else if((status&status_event_bits)==status_system) { rs = -1; ++rv; // XXX: is it really needed? } switch(status&status_event_bits) { case status_note_off: case status_note_on: case status_polyphonic_key_pressure: // aka status_aftertouch case status_control_change: case status_pitch_wheel_change: rv += 2; break; case status_program_change: case status_channel_pressure: ++rv; break; case status_system: switch(status&status_system_bits) { case status_system_sysex: case status_system_end_of_sysex: rv += data.size()+1; break; case status_system_MTC_quarter_frame: case status_system_song_select: ++rv; break; case status_system_song_position_pointer: rv += 2; break; case status_system_tune_request: case status_system_timing_clock: // aka status_system_midi_clock case status_system_midi_tick: case status_system_start: // aka status_system_midi_start case status_system_stop: // aka status_system_midi_stop case status_system_continue: // aka status_system_midi_continue case status_system_active_sense: break; /* XXX: ensure there is no data? */ case status_system_meta: // also reset, but not for the purpose of midi file ++rv; rv += calcVLsize(data.size()); rv += data.size(); break; default: throw exception(CODEPOINT,"Internal error"); break; } break; default: throw exception(CODEPOINT,"Internal error"); break; } return rv; } void message_t::save(int& rs,ostream& s) const { if(status!=rs) { s.put(status); if(!s.good()) throw exception_output_error(CODEPOINT,"Error writing midi status byte"); rs = status; }else if((status&status_event_bits)==status_system) { rs = -1; s.put(status); // XXX: is it really needed? if(!s.good()) throw exception_output_error(CODEPOINT,"Error writing midi system status byte"); } switch(status&status_event_bits) { case status_note_off: case status_note_on: case status_polyphonic_key_pressure: // aka status_aftertouch case status_control_change: case status_pitch_wheel_change: save_data(s,2); break; case status_program_change: case status_channel_pressure: save_data(s,1); break; case status_system: switch(status&status_system_bits) { case status_system_sysex: case status_system_end_of_sysex: save_sysex(s); break; case status_system_MTC_quarter_frame: case status_system_song_select: save_data(s,1); break; case status_system_song_position_pointer: save_data(s,2); break; case status_system_tune_request: case status_system_timing_clock: // aka status_system_midi_clock case status_system_midi_tick: case status_system_start: // aka status_system_midi_start case status_system_stop: // aka status_system_midi_stop case status_system_continue: // aka status_system_midi_continue case status_system_active_sense: break; /* XXX: ensure there is no data? */ case status_system_meta: // also reset, but not for the purpose of midi file s.put(meta_status&0xFF); if(!s.good()) throw exception_output_error(CODEPOINT,"Error writing meta event"); writeVL(s,data.size()); save_data(s); break; default: throw exception(CODEPOINT,"Internal error"); break; } break; default: throw exception(CODEPOINT,"Internal error"); break; } } void message_t::load(int& rs,istream& s) { data.clear(); status = s.get(); if(!s.good()) throw exception_input_error(CODEPOINT,"Error reading MIDI event status byte"); if(status&status_bit) { if((status&status_event_bits)!=status_system) rs = status; }else{ if(rs<0) throw exception_invalid_input(CODEPOINT,"Attempt to rely on the absent running status"); data.push_back(status); status = rs; } switch(status&status_event_bits) { case status_note_off: case status_note_on: case status_polyphonic_key_pressure: // a.k.a. status_aftertouch case status_control_change: case status_pitch_wheel_change: load_data(s,2); break; case status_program_change: case status_channel_pressure: load_data(s,1); break; case status_system: switch(status&status_system_bits) { case status_system_sysex: case status_system_end_of_sysex: load_sysex(s); break; case status_system_MTC_quarter_frame: case status_system_song_select: load_data(s,1); break; case status_system_song_position_pointer: load_data(s,2); break; case status_system_tune_request: case status_system_timing_clock: // a.k.a. status_system_midi_clock case status_system_midi_tick: case status_system_start: // a.k.a. status_system_midi_start case status_system_stop: // a.k.a. status_system_midi_stop case status_system_continue: // a.k.a. status_system_midi_continue case status_system_active_sense: break; case status_system_meta: // also, reset, but not in midi files { meta_status = s.get(); if(!s.good()) throw exception_input_error(CODEPOINT,"Error reading meta event type"); int l = readVL(s); load_data(s,l); } break; default: throw exception(CODEPOINT,"Internal error"); break; } break; default: throw exception(CODEPOINT,"Internal error"); break; } } void message_t::save_data(ostream& s,int c) const { if(c!=data.size()) throw exception(CODEPOINT,"Writing corrupt data"); save_data(s); } void message_t::save_data(ostream& s) const { for(bytes_t::const_iterator i=data.begin();i!=data.end();++i) s.put(*i); if(!s.good()) |