diff options
| -rw-r--r-- | src/mus2mid.c | 93 |
1 files changed, 46 insertions, 47 deletions
diff --git a/src/mus2mid.c b/src/mus2mid.c index 3fea1462..6b8b4f5c 100644 --- a/src/mus2mid.c +++ b/src/mus2mid.c @@ -60,7 +60,6 @@ typedef enum midi_pitchwheel = 0xE0 } midievent; - // Structure to hold MUS file header typedef struct { @@ -73,7 +72,7 @@ typedef struct } PACKEDATTR musheader; // Standard MIDI type 0 header + track header -static byte midiheader[] = +static const byte midiheader[] = { 'M', 'T', 'h', 'd', // Main header 0x00, 0x00, 0x00, 0x06, // Header size @@ -99,7 +98,7 @@ static unsigned int queuedtime = 0; static unsigned int tracksize; -static byte mus2midi_translation[] = +static const byte controller_map[] = { 0x00, 0x20, 0x01, 0x07, 0x0A, 0x0B, 0x5B, 0x5D, 0x40, 0x43, 0x78, 0x7B, 0x7E, 0x7F, 0x79 @@ -109,7 +108,7 @@ static int channel_map[NUM_CHANNELS]; // Write timestamp to a MIDI file. -static boolean midi_writetime(unsigned int time, MEMFILE *midioutput) +static boolean WriteTime(unsigned int time, MEMFILE *midioutput) { unsigned int buffer = time & 0x7F; byte writeval; @@ -145,11 +144,11 @@ static boolean midi_writetime(unsigned int time, MEMFILE *midioutput) // Write the end of track marker -static boolean midi_writeendtrack(MEMFILE *midioutput) +static boolean WriteEndTrack(MEMFILE *midioutput) { byte endtrack[] = {0xFF, 0x2F, 0x00}; - if (midi_writetime(queuedtime, midioutput)) + if (WriteTime(queuedtime, midioutput)) { return true; } @@ -164,12 +163,12 @@ static boolean midi_writeendtrack(MEMFILE *midioutput) } // Write a key press event -static boolean midi_writepresskey(byte channel, byte key, - byte velocity, MEMFILE *midioutput) +static boolean WritePressKey(byte channel, byte key, + byte velocity, MEMFILE *midioutput) { byte working = midi_presskey | channel; - if (midi_writetime(queuedtime, midioutput)) + if (WriteTime(queuedtime, midioutput)) { return true; } @@ -199,12 +198,12 @@ static boolean midi_writepresskey(byte channel, byte key, } // Write a key release event -static boolean midi_writereleasekey(byte channel, byte key, - MEMFILE *midioutput) +static boolean WriteReleaseKey(byte channel, byte key, + MEMFILE *midioutput) { byte working = midi_releasekey | channel; - if (midi_writetime(queuedtime, midioutput)) + if (WriteTime(queuedtime, midioutput)) { return true; } @@ -234,12 +233,12 @@ static boolean midi_writereleasekey(byte channel, byte key, } // Write a pitch wheel/bend event -static boolean midi_writepitchwheel(byte channel, short wheel, - MEMFILE *midioutput) +static boolean WritePitchWheel(byte channel, short wheel, + MEMFILE *midioutput) { byte working = midi_pitchwheel | channel; - if (midi_writetime(queuedtime, midioutput)) + if (WriteTime(queuedtime, midioutput)) { return true; } @@ -268,12 +267,12 @@ static boolean midi_writepitchwheel(byte channel, short wheel, } // Write a patch change event -static boolean midi_writechangepatch(byte channel, byte patch, - MEMFILE *midioutput) +static boolean WriteChangePatch(byte channel, byte patch, + MEMFILE *midioutput) { byte working = midi_changepatch | channel; - if (midi_writetime(queuedtime, midioutput)) + if (WriteTime(queuedtime, midioutput)) { return true; } @@ -297,14 +296,14 @@ static boolean midi_writechangepatch(byte channel, byte patch, // Write a valued controller change event -static boolean midi_writechangecontroller_valued(byte channel, - byte control, - byte value, - MEMFILE *midioutput) +static boolean WriteChangeController_Valued(byte channel, + byte control, + byte value, + MEMFILE *midioutput) { byte working = midi_changecontroller | channel; - if (midi_writetime(queuedtime, midioutput)) + if (WriteTime(queuedtime, midioutput)) { return true; } @@ -345,17 +344,17 @@ static boolean midi_writechangecontroller_valued(byte channel, } // Write a valueless controller change event -static boolean midi_writechangecontroller_valueless(byte channel, - byte control, - MEMFILE *midioutput) +static boolean WriteChangeController_Valueless(byte channel, + byte control, + MEMFILE *midioutput) { - return midi_writechangecontroller_valued(channel, control, 0, + return WriteChangeController_Valued(channel, control, 0, midioutput); } // Allocate a free MIDI channel. -static int midi_allocate_channel(void) +static int AllocateMIDIChannel(void) { int result; int max; @@ -392,7 +391,7 @@ static int midi_allocate_channel(void) // Given a MUS channel number, get the MIDI channel number to use // in the outputted file. -static int midi_get_channel(int mus_channel) +static int GetMIDIChannel(int mus_channel) { // Find the MIDI channel to use for this MUS channel. // MUS channel 15 is the percusssion channel. @@ -408,14 +407,14 @@ static int midi_get_channel(int mus_channel) if (channel_map[mus_channel] == -1) { - channel_map[mus_channel] = midi_allocate_channel(); + channel_map[mus_channel] = AllocateMIDIChannel(); } return channel_map[mus_channel]; } } -static boolean read_musheader(MEMFILE *file, musheader *header) +static boolean ReadMusHeader(MEMFILE *file, musheader *header) { boolean result; @@ -480,7 +479,7 @@ boolean mus2mid(MEMFILE *musinput, MEMFILE *midioutput) // Grab the header - if (!read_musheader(musinput, &musfileheader)) + if (!ReadMusHeader(musinput, &musfileheader)) { return true; } @@ -523,7 +522,7 @@ boolean mus2mid(MEMFILE *musinput, MEMFILE *midioutput) return true; } - channel = midi_get_channel(eventdescriptor & 0x0F); + channel = GetMIDIChannel(eventdescriptor & 0x0F); event = eventdescriptor & 0x70; switch (event) @@ -534,7 +533,7 @@ boolean mus2mid(MEMFILE *musinput, MEMFILE *midioutput) return true; } - if (midi_writereleasekey(channel, key, midioutput)) + if (WriteReleaseKey(channel, key, midioutput)) { return true; } @@ -557,8 +556,8 @@ boolean mus2mid(MEMFILE *musinput, MEMFILE *midioutput) channelvelocities[channel] &= 0x7F; } - if (midi_writepresskey(channel, key, - channelvelocities[channel], midioutput)) + if (WritePressKey(channel, key, + channelvelocities[channel], midioutput)) { return true; } @@ -570,7 +569,7 @@ boolean mus2mid(MEMFILE *musinput, MEMFILE *midioutput) { break; } - if (midi_writepitchwheel(channel, (short)(key * 64), midioutput)) + if (WritePitchWheel(channel, (short)(key * 64), midioutput)) { return true; } @@ -587,9 +586,9 @@ boolean mus2mid(MEMFILE *musinput, MEMFILE *midioutput) return true; } - if (midi_writechangecontroller_valueless(channel, - mus2midi_translation[controllernumber], - midioutput)) + if (WriteChangeController_Valueless(channel, + controller_map[controllernumber], + midioutput)) { return true; } @@ -609,8 +608,8 @@ boolean mus2mid(MEMFILE *musinput, MEMFILE *midioutput) if (controllernumber == 0) { - if (midi_writechangepatch(channel, controllervalue, - midioutput)) + if (WriteChangePatch(channel, controllervalue, + midioutput)) { return true; } @@ -622,10 +621,10 @@ boolean mus2mid(MEMFILE *musinput, MEMFILE *midioutput) return true; } - if (midi_writechangecontroller_valued(channel, - mus2midi_translation[controllernumber], - controllervalue, - midioutput)) + if (WriteChangeController_Valued(channel, + controller_map[controllernumber], + controllervalue, + midioutput)) { return true; } @@ -669,7 +668,7 @@ boolean mus2mid(MEMFILE *musinput, MEMFILE *midioutput) } // End of track - if (midi_writeendtrack(midioutput)) + if (WriteEndTrack(midioutput)) { return true; } |