cwIoMidiRecordPlay.cpp : Recognize and read version 0 AM files.
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kevin
parent
1d9f2e28e2
commit
984cb3a11a
@ -442,6 +442,53 @@ namespace cw
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}
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cw::rc_t _am_file_read_version_0( const char* fn, file::handle_t fH, am_midi_msg_t* amMsgArray, unsigned msgN )
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{
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// version 0 record type
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typedef struct msg_str
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{
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unsigned dev_idx;
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unsigned port_idx;
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time::spec_t timestamp;
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uint8_t ch;
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uint8_t st;
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uint8_t d0;
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uint8_t d1;
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unsigned microsecs;
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} zero_msg_t;
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cw::rc_t rc = kOkRC;
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zero_msg_t* zMsgArray = mem::allocZ<zero_msg_t>(msgN);
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unsigned fileByteN = msgN * sizeof(zero_msg_t);
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if((rc = file::read(fH,zMsgArray,fileByteN)) != kOkRC )
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{
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rc = cwLogError(kReadFailRC,"Data read failed on Audio-MIDI file: '%s'.", fn );
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goto errLabel;
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}
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for(unsigned i=0; i<msgN; ++i)
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{
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am_midi_msg_t* am = amMsgArray + i;
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zero_msg_t* zm = zMsgArray + i;
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am->devIdx = zm->dev_idx;
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am->portIdx = zm->port_idx;
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am->microsec = zm->microsecs;
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am->id = i;
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am->timestamp = zm->timestamp;
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am->loc = i;
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am->ch = zm->ch;
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am->status = zm->st;
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am->d0 = zm->d0;
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am->d1 = zm->d1;
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}
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errLabel:
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mem::release(zMsgArray);
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return rc;
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}
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// Read the am_midi_msg_t records from a file written by _midi_write()
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// If msgArrayCntRef==0 and msgArrayRef==NULL then an array will be allocated and it is up
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// to the caller to release it, otherwise the msgArrayCntRef should be set to the count
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@ -450,8 +497,13 @@ namespace cw
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// msgArrayCntRef records will be returned.
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cw::rc_t _am_file_read( const char* fn, unsigned& msgArrayCntRef, am_midi_msg_t*& msgArrayRef )
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{
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rc_t rc = kOkRC;
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unsigned n = 0;
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rc_t rc = kOkRC;
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unsigned recordN = 0; // count of records in the ifle
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unsigned fileByteN = 0; // count of bytes in the file
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int version = 0; // version id (always a negative number)
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bool alloc_fl = false;
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bool print_fl = false;
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file::handle_t fH;
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if((rc = file::open(fH,fn,file::kReadFl)) != kOkRC )
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@ -460,35 +512,80 @@ namespace cw
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goto errLabel;
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}
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if((rc = file::read(fH,n)) != kOkRC )
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// read the first word - which is either a version id or the count of records in the file
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// if this is a version 0 file
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if((rc = file::read(fH,version)) != kOkRC )
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{
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rc = cwLogError(kReadFailRC,"Header read failed on Audio-MIDI file: '%s'.", fn );
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rc = cwLogError(kReadFailRC,"Version read failed on Audio-MIDI file: '%s'.", fn );
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goto errLabel;
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}
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if( msgArrayCntRef == 0 || msgArrayRef == nullptr )
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// if the version is greater than 0 then this is a version 0 file (and 'version' holds the record count.
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if( version > 0 )
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{
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msgArrayRef = mem::allocZ<am_midi_msg_t>(n);
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recordN = (unsigned)version;
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version = 0;
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}
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else
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else // otherwise the second word in the file holds the size of the file
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{
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if( n > msgArrayCntRef )
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if((rc = file::read(fH,recordN)) != kOkRC )
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{
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cwLogWarning("The count of message in Audio-MIDI file '%s' reduced from %i to %i.", fn, n, msgArrayCntRef );
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n = msgArrayCntRef;
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rc = cwLogError(kReadFailRC,"Header read failed on Audio-MIDI file: '%s'.", fn );
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goto errLabel;
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}
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}
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if((rc = file::read(fH,msgArrayRef,n*sizeof(am_midi_msg_t))) != kOkRC )
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// if the output msg array was not allocated - then allocate it here
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if( msgArrayCntRef == 0 || msgArrayRef == nullptr )
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{
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rc = cwLogError(kReadFailRC,"Data read failed on Audio-MIDI file: '%s'.", fn );
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goto errLabel;
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alloc_fl = true;
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msgArrayRef = mem::allocZ<am_midi_msg_t>(recordN);
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}
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else // if the msg array was allocated but is too small - then decrease the count of records to be read from the file
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{
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if( recordN > msgArrayCntRef )
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{
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cwLogWarning("The count of message in Audio-MIDI file '%s' reduced from %i to %i.", fn, recordN, msgArrayCntRef );
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recordN = msgArrayCntRef;
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}
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}
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msgArrayCntRef = n;
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if( version == 0 )
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{
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// read the version 0 file into a temporary buffer then translate to am_midi_msg_t records
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if((rc = _am_file_read_version_0( fn, fH, msgArrayRef, recordN )) != kOkRC )
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goto errLabel;
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}
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else
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{
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if((rc = file::read(fH,msgArrayRef,fileByteN)) != kOkRC )
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{
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rc = cwLogError(kReadFailRC,"Data read failed on Audio-MIDI file: '%s'.", fn );
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goto errLabel;
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}
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}
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if( print_fl )
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{
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for(unsigned i=0; i<recordN; ++i)
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{
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am_midi_msg_t* m = msgArrayRef;
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double dt = time::elapsedSecs( m[0].timestamp, m[i].timestamp );
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printf("%4i %4i : %6.2f %2x %2x %2x %2x : %6.2f\n", m[i].devIdx, m[i].portIdx, dt, m[i].ch, m[i].status, m[i].d0, m[i].d1, m[i].microsec/(1000.0*1000.0) );
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}
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}
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msgArrayCntRef = recordN;
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errLabel:
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if( rc != kOkRC and alloc_fl )
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{
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mem::release(msgArrayRef);
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msgArrayRef = nullptr;
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msgArrayCntRef = 0;
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}
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return rc;
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}
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@ -497,6 +594,7 @@ namespace cw
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{
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rc_t rc = kOkRC;
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unsigned n = 0;
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int version;
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file::handle_t fH;
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if((rc = file::open(fH,fn,file::kReadFl)) != kOkRC )
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@ -505,6 +603,12 @@ namespace cw
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goto errLabel;
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}
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if((rc = file::read(fH,version)) != kOkRC )
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{
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rc = cwLogError(kReadFailRC,"Version read failed on Audio-MIDI file: '%s'.", fn );
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goto errLabel;
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}
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if((rc = file::read(fH,n)) != kOkRC )
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{
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rc = cwLogError(kReadFailRC,"Header read failed on Audio-MIDI file: '%s'.", fn );
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@ -539,6 +643,9 @@ namespace cw
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{
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rc_t rc = kOkRC;
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file::handle_t fH;
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// NOTE: version must be a small negative number to differentiate from file version that
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// whose first word is the count of records in the file, rather than the version number
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int version = -1;
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if( p->iMsgArrayInIdx == 0 )
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{
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@ -553,6 +660,13 @@ namespace cw
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goto errLabel;
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}
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// write the file version
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if((rc = write(fH,version)) != kOkRC )
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{
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rc = cwLogError(kWriteFailRC,"Version write to '%s' failed.",cwStringNullGuard(fn));
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goto errLabel;
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}
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// write the file header
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if((rc = write(fH,p->iMsgArrayInIdx)) != kOkRC )
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{
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@ -1244,12 +1358,21 @@ cw::rc_t cw::midi_record_play::am_to_midi_dir( const char* inDir )
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filesys::dirEntry_t* dirEntryArray = nullptr;
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unsigned dirEntryCnt = 0;
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if(( dirEntryArray = dirEntries( inDir, filesys::kDirFsFl, &dirEntryCnt )) == nullptr )
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if(( dirEntryArray = filesys::dirEntries( inDir, filesys::kDirFsFl | filesys::kFullPathFsFl, &dirEntryCnt )) == nullptr )
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goto errLabel;
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for(unsigned i=0; i<dirEntryCnt; ++i)
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for(unsigned i=0; i<dirEntryCnt and rc==kOkRC; ++i)
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{
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printf("0x%x %s\n", dirEntryArray[i].flags, dirEntryArray[i].name);
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char* am_fn = filesys::makeFn( dirEntryArray[i].name, "midi", "am", NULL);
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char* midi_fn = filesys::makeFn( dirEntryArray[i].name, "midi", "mid", NULL);
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cwLogInfo("0x%x AM:%s MIDI:%s", dirEntryArray[i].flags, dirEntryArray[i].name, midi_fn);
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rc = am_to_midi_file( am_fn, midi_fn );
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mem::release(am_fn);
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mem::release(midi_fn);
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}
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errLabel:
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