| -rw-r--r-- | noncore/multimedia/powerchord/gs.cpp | 17 | ||||
| -rw-r--r-- | noncore/multimedia/powerchord/gs.h | 1 | ||||
| -rw-r--r-- | noncore/multimedia/powerchord/opie-powerchord.control | 8 | ||||
| -rw-r--r-- | share/powerchord/acguitar.raw | bin | 0 -> 50000 bytes |
4 files changed, 15 insertions, 11 deletions
diff --git a/noncore/multimedia/powerchord/gs.cpp b/noncore/multimedia/powerchord/gs.cpp index a3e85c9..fdcfb74 100644 --- a/noncore/multimedia/powerchord/gs.cpp +++ b/noncore/multimedia/powerchord/gs.cpp @@ -1,192 +1,197 @@ //#include <FL/Fl.H> //#include <FL/Fl_Widget.H> //#include <FL/fl_draw.H> #include <stdio.h> //#include <qpixmap.h> #include "gs.h" #include <sys/ioctl.h> #include <unistd.h> #include <fcntl.h> #include <sys/soundcard.h> #include <errno.h> #include <string.h> #include <stdlib.h> //#include <qpainter.h> #include <qmessagebox.h> +#include <qstring.h> gs::gs() { finger[0] = OPEN; finger[1] = OPEN; finger[2] = OPEN; finger[3] = OPEN; finger[4] = OPEN; finger[5] = OPEN; tuning[0] = 0; tuning[1] = 0; tuning[2] = 0; tuning[3] = 0; tuning[4] = 0; tuning[5] = 0; initial_fret = 0; audio_fd = -1; pb_rate0 = 0; pb_rate1 = 0; pb_rate2 = 0; pb_rate3 = 0; pb_rate4 = 0; pb_rate5 = 0; pb_rate6 = 0; pb_oct0 = 0; pb_oct1 = 0; pb_oct2 = 0; pb_oct3 = 0; pb_oct4 = 0; pb_oct5 = 0; pb_oct6 = 0; // initialise reverb buffer reverb = (signed short *)malloc(1024 * sizeof(signed short)); for (reverb_ptr=0;reverb_ptr<1024;reverb_ptr++){ reverb[reverb_ptr] = 0; } reverb_ptr = 0; reverb_max = 1024; - // load sampled 'E' string + // load sampled 'E' string int samplen = 25000; signed short *dsp_buf = (signed short *)malloc(samplen * sizeof(signed short)); signed short *dsp_buf_ptr = dsp_buf; int raw_fd; - raw_fd = open(ACGUITAR_PATH_S, O_RDONLY); - + + QString path = getenv( "OPIEDIR" ); + path.append( "/share/powerchord/acguitar.raw" ); + + raw_fd = open( (const char*) path, O_RDONLY); + if (raw_fd < 0){ fprintf(stderr, "Failed to open raw file (%s)\n", strerror(errno)); exit(-1); } int totread = 0; int i; - + while (totread < samplen*2){ int want = samplen*2 - totread; int numread = read(raw_fd, dsp_buf_ptr, want); fprintf(stderr, "read %d bytes\n", numread); totread += numread; dsp_buf_ptr += numread/2; - + if (numread == 0){ fprintf(stderr, "failed to read bytes\n"); - exit(-1); + exit(-1); } } close(raw_fd); // scale down a bit for mixing for (i=0;i<samplen;i++){ dsp_buf[i] /= 6; } set_tonebank(0, dsp_buf, samplen); set_tonebank(1, dsp_buf, samplen); set_tonebank(2, dsp_buf, samplen); set_tonebank(3, dsp_buf, samplen); set_tonebank(4, dsp_buf, samplen); set_tonebank(5, dsp_buf, samplen); set_tonebank(6, dsp_buf, samplen); } void gs::set_tonebank(int tb, signed short *buf, int length) { switch(tb){ case 0: tonebank0 = buf; tonebank_length0 = length; break; case 1: tonebank1 = buf; tonebank_length1 = length; break; case 2: tonebank2 = buf; tonebank_length2 = length; break; case 3: tonebank3 = buf; tonebank_length3 = length; break; case 4: tonebank4 = buf; tonebank_length4 = length; break; case 5: tonebank5 = buf; tonebank_length5 = length; break; case 6: tonebank6 = buf; tonebank_length6 = length; break; } } void gs::Finger(int f, int position){ if (f < 0 || f > 5){ fprintf(stderr, "Error - finger2 value was %d\n", f); return; } finger[f] = position; } void gs::Tuning(int t[6]){ for (int i=0;i<6;i++){ tuning[i] = t[i]; } } // length in ps (seconds x 10^-9) of the period of a note. // we use these as ratios in a breshenham-like algorithm to // scale a deep note to a higher pitch // They are derived from f(A) = 440Hz and multiply each successive // semitone by the 12th root of 2 (such that after 12 multiplications for // 12 semitones you have a note exactly 2x the frequency of the initial one, // - an octave higher in other words.) int gs::note_periods[12] = { 90703, 85612, 80802, 76272, 71991, 67950, 64137, 60537, 57139, 53932, 50905, 48048 }; int gs::octave_step[6] = { 1, diff --git a/noncore/multimedia/powerchord/gs.h b/noncore/multimedia/powerchord/gs.h index 3e4c04d..f2b309f 100644 --- a/noncore/multimedia/powerchord/gs.h +++ b/noncore/multimedia/powerchord/gs.h @@ -1,107 +1,106 @@ #ifndef __GS_H #define __GS_H #include <qobject.h> // sound includes #include <sys/soundcard.h> #define BUFSIZE 256 #define NUMCHANS 7 -#define ACGUITAR_PATH_S "/usr/local/projects/opie-head/noncore/multimedia/powerchord/acguitar.raw" class gs : public QObject { Q_OBJECT public: gs(); ~gs(); private: int initial_fret; int finger[6]; int tuning[6]; signed short *reverb; int reverb_ptr; int reverb_max; int audio_fd; signed short audio_buf[BUFSIZE]; static int note_periods[12]; static int octave_step[6]; int frames; // 7 channel synth signed short *tonebank0; // source of waveform signed short *tonebank1; signed short *tonebank2; signed short *tonebank3; signed short *tonebank4; signed short *tonebank5; signed short *tonebank6; int tonebank_length0; int tonebank_length1; int tonebank_length2; int tonebank_length3; int tonebank_length4; int tonebank_length5; int tonebank_length6; int pb_rate0; // playback rate or 0 int pb_rate1; int pb_rate2; int pb_rate3; int pb_rate4; int pb_rate5; int pb_rate6; int pb_ratio0; // accumulator for ratio int pb_ratio1; int pb_ratio2; int pb_ratio3; int pb_ratio4; int pb_ratio5; int pb_ratio6; int pb_rsc0; // pointer to current position int pb_rsc1; int pb_rsc2; int pb_rsc3; int pb_rsc4; int pb_rsc5; int pb_rsc6; int pb_oct0; // octave int pb_oct1; int pb_oct2; int pb_oct3; int pb_oct4; int pb_oct5; int pb_oct6; void set_tonebank(int bank, signed short *buffer, int length); protected: public: static const int MUTED=7; static const int OPEN=0; // accessors int Frames(){return frames;}; int Finger(int finger); int Fret(){return initial_fret;}; int Playing(){ if (pb_rate0 == 0 && pb_rate1 == 0 && pb_rate2 == 0 && pb_rate3 == 0 && pb_rate4 == 0 && pb_rate5 == 0 && pb_rate6 == 0) return 0; return 1; }; public : // mutators void Reverb(int size){reverb_max = 64 * size;}; void Finger(int finger, int position); diff --git a/noncore/multimedia/powerchord/opie-powerchord.control b/noncore/multimedia/powerchord/opie-powerchord.control index 7f45999..d295031 100644 --- a/noncore/multimedia/powerchord/opie-powerchord.control +++ b/noncore/multimedia/powerchord/opie-powerchord.control @@ -1,10 +1,10 @@ -Files: bin/powerchord apps/Applications/powerchord.desktop pics/powerchord sounds/powerchord +Files: bin/powerchord apps/Applications/powerchord.desktop pics/powerchord share/powerchord Priority: optional -Section: qpe/applications +Section: Applications Maintainer: Camilo Mesias <camilo@mesias.co.uk> Architecture: arm -Version: 0.0.7 -Depends: qpe-base ($QPE_VERSION) +Version: 0.0.8 +Depends: task-opie-minimal Description: Guitar Chord generator application Allows naming of chords using base note and key. Fretboard diagrams are produced illustrating ways to play the chord. diff --git a/share/powerchord/acguitar.raw b/share/powerchord/acguitar.raw Binary files differnew file mode 100644 index 0000000..1452147 --- a/dev/null +++ b/share/powerchord/acguitar.raw |