From a37e2e2c71e9f288dbc7def67a223494de673f9e Mon Sep 17 00:00:00 2001 From: kevin Date: Wed, 14 Sep 2016 18:11:30 -0400 Subject: [PATCH] cmMidiFile.h/c : Added cmMidiFileGenSvgFile() --- cmMidiFile.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++ cmMidiFile.h | 10 ++++-- 2 files changed, 104 insertions(+), 2 deletions(-) diff --git a/cmMidiFile.c b/cmMidiFile.c index 8a18e8a..ce6e6e8 100644 --- a/cmMidiFile.c +++ b/cmMidiFile.c @@ -8,8 +8,11 @@ #include "cmMallocDebug.h" #include "cmLinkedHeap.h" #include "cmTime.h" +#include "cmText.h" #include "cmMidi.h" #include "cmMidiFile.h" +#include "cmSvgWriter.h" + #ifdef cmBIG_ENDIAN #define mfSwap16(v) (v) @@ -1975,6 +1978,99 @@ cmMfRC_t cmMidiFileGenPlotFile( cmCtx_t* ctx, const cmChar_t* midiFn, const cmCh return rc; } +cmMfRC_t cmMidiFileGenSvgFile( cmCtx_t* ctx, const cmChar_t* midiFn, const cmChar_t* outSvgFn, const cmChar_t* cssFn ) +{ + cmMfRC_t rc = kOkMfRC; + cmSvgH_t svgH = cmSvgNullHandle; + cmMidiFileH_t mfH = cmMidiFileNullHandle; + unsigned msgN = 0; + const cmMidiTrackMsg_t** msgs = NULL; + unsigned noteHeight = 10; + double micros_per_sec = 1000.0; + unsigned i; + + if((rc = cmMidiFileOpen(ctx,&mfH,midiFn)) != kOkMfRC ) + { + rc = cmErrMsg(&ctx->err,rc,"Unable to open the MIDI file '%s'.",cmStringNullGuard(midiFn)); + goto errLabel; + } + + cmMidiFileCalcNoteDurations( mfH ); + + msgN = cmMidiFileMsgCount(mfH); + msgs = cmMidiFileMsgArray(mfH); + + + if( cmSvgWriterAlloc(ctx,&svgH) != kOkSvgRC ) + { + rc = cmErrMsg(&ctx->err,kSvgFailMfRC,"Unable to create the MIDI SVG output file '%s'.",cmStringNullGuard(outSvgFn)); + goto errLabel; + } + + + for(i=0; istatus == kNoteOnMdId && msgs[i]->u.chMsgPtr->d1 > 0 ) + { + const cmMidiTrackMsg_t* m = msgs[i]; + + + if( cmSvgWriterRect(svgH, m->amicro/micros_per_sec, m->u.chMsgPtr->d0 * noteHeight, m->u.chMsgPtr->durMicros/micros_per_sec, noteHeight-1, "note" ) != kOkSvgRC ) + rc = kSvgFailMfRC; + + const cmChar_t* t0 = cmMidiToSciPitch(m->u.chMsgPtr->d0,NULL,0); + + if( cmSvgWriterText(svgH, (m->amicro + (m->u.chMsgPtr->durMicros/2)) / micros_per_sec, m->u.chMsgPtr->d0 * noteHeight, t0, "text" ) != kOkSvgRC ) + rc = kSvgFailMfRC; + + } + + if( rc != kOkMfRC ) + { + cmErrMsg(&ctx->err,rc,"SVG Shape insertion failed."); + goto errLabel; + } + + unsigned dN = 0; + cmMidiFileDensity_t* dV = cmMidiFileNoteDensity( mfH, &dN ); + double t0 = 0; + double y0 = 64.0; + cmChar_t* tx = NULL; + + for(i=0; ierr,kUidNotFoundMfRC,"The MIDI msg form UID:%i was not found.",dV[i].uid); + else + { + double t1 = m->amicro / micros_per_sec; + double y1 = dV[i].density * noteHeight; + + cmSvgWriterLine(svgH, t0, y0, t1, y1, "density" ); + cmSvgWriterText(svgH, t1, y1, tx = cmTsPrintfP(tx,"%i",dV[i].density),"dtext"); + + t0 = t1; + y0 = y1; + + } + } + + cmMemFree(dV); + cmMemFree(tx); + + if( rc == kOkMfRC ) + if( cmSvgWriterWrite(svgH,cssFn,outSvgFn) != kOkSvgRC ) + rc = cmErrMsg(&ctx->err,kSvgFailMfRC,"SVG file write to '%s' failed.",cmStringNullGuard(outSvgFn)); + + + errLabel: + cmMidiFileClose(&mfH); + cmSvgWriterFree(&svgH); + + return rc; +} + void cmMidiFilePrintControlNumbers( cmCtx_t* ctx, const char* fn ) { cmMidiFileH_t h = cmMidiFileNullHandle; diff --git a/cmMidiFile.h b/cmMidiFile.h index d54d1be..f77e51a 100644 --- a/cmMidiFile.h +++ b/cmMidiFile.h @@ -117,7 +117,8 @@ extern "C" { kLargeDeltaTickMfRC, // 12 (a large delta tick value was filtered) kUidNotFoundMfRC, // 13 kUidNotANoteMsgMfRC, // 14 - kInvalidTrkIndexMfRC // 15 + kInvalidTrkIndexMfRC,// 15 + kSvgFailMfRC // 16 }; extern cmMidiFileH_t cmMidiFileNullHandle; @@ -220,11 +221,16 @@ extern "C" { unsigned density; } cmMidiFileDensity_t; - cmMidiFileDensity_t* cmMidiFileNoteTimeDensity( cmMidiFileH_t h, unsigned* cntRef ); + + // Generate the note onset density measure for each note in the MIDI file. + // Delete the returned memory with a call to cmMemFree(). + cmMidiFileDensity_t* cmMidiFileNoteDensity( cmMidiFileH_t h, unsigned* cntRef ); // Generate a piano-roll plot description file which can be displayed with cmXScore.m cmMfRC_t cmMidiFileGenPlotFile( cmCtx_t* ctx, const cmChar_t* midiFn, const cmChar_t* outFn ); + cmMfRC_t cmMidiFileGenSvgFile( cmCtx_t* ctx, const cmChar_t* midiFn, const cmChar_t* outSvgFn, const cmChar_t* cssFn ); + void cmMidiFileTest( const char* fn, cmCtx_t* ctx );