Start adding support for sound in Sudoku via ALSA.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@4684 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Michael R Sweet
parent
29a41762fb
commit
2f40b8b80b
@ -249,6 +249,11 @@
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#undef HAVE_PTHREAD
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#undef HAVE_PTHREAD_H
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/*
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* Do we have the ALSA library?
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*/
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#undef HAVE_ALSA_ASOUNDLIB_H
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/*
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* End of "$Id$".
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@ -389,6 +389,15 @@ AC_CHECK_FUNCS(localeconv)
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dnl FLTK library uses math library functions...
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AC_SEARCH_LIBS(pow, m)
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dnl Check for audio libraries...
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AUDIOLIBS=""
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AC_CHECK_HEADER(alsa/asoundlib.h,
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AC_DEFINE(HAVE_ALSA_ASOUNDLIB_H)
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AUDIOLIBS="-lasound")
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AC_SUBST(AUDIOLIBS)
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dnl Check for image libraries...
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SAVELIBS="$LIBS"
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IMAGELIBS=""
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@ -73,6 +73,7 @@ IMGDSONAME = @IMGDSONAME@
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DSOCOMMAND = @DSOCOMMAND@
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# libraries to link with:
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AUDIOLIBS = @AUDIOLIBS@
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LDLIBS = @LDFLAGS@ @LIBS@
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GLDLIBS = @LDFLAGS@ @GLLIB@ @LIBS@
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LINKFLTK = @LINKFLTK@
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@ -335,14 +335,14 @@ subwindow$(EXEEXT): subwindow.o
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sudoku: sudoku.o
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echo Linking $@...
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$(CXX) -I.. $(CXXFLAGS) sudoku.o -o $@ $(LINKFLTKIMG) $(LDLIBS)
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$(CXX) -I.. $(CXXFLAGS) sudoku.o -o $@ $(AUDIOLIBS) $(LINKFLTKIMG) $(LDLIBS)
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$(CP) sudoku$(EXEEXT) sudoku.app/Contents/MacOS
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$(POSTBUILD) $@ ../FL/mac.r
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sudoku.exe: sudoku.o sudoku.rc
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echo Linking $@...
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windres sudoku.rc sudokures.o
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$(CXX) -I.. $(CXXFLAGS) sudoku.o sudokures.o -o $@ $(LINKFLTKIMG) $(LDLIBS)
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$(CXX) -I.. $(CXXFLAGS) sudoku.o sudokures.o -o $@ $(AUDIOLIBS) $(LINKFLTKIMG) $(LDLIBS)
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symbols$(EXEEXT): symbols.o
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209
test/sudoku.cxx
209
test/sudoku.cxx
@ -40,6 +40,7 @@
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <math.h>
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#ifdef WIN32
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# include "sudokurc.h"
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@ -47,6 +48,13 @@
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# include "sudoku.xbm"
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#endif // WIN32
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#include <config.h>
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#ifdef HAVE_ALSA_ASOUNDLIB_H
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# define ALSA_PCM_NEW_HW_PARAMS_API
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# include <alsa/asoundlib.h>
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#endif // HAVE_ALSA_ASOUNDLIB_H
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//
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// Default sizes...
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@ -61,6 +69,181 @@
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# define MENU_OFFSET 25
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#endif // __APPLE__
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// Sound class
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class SudokuSound {
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// Private, OS-specific data...
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#ifdef __APPLE__
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#elif defined(WIN32)
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#else
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# ifdef HAVE_ALSA_ASOUNDLIB_H
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snd_pcm_t *handle;
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# endif // HAVE_ALSA_ASOUNDLIB_H
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#endif // __APPLE__
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// Common data...
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static int frequencies[9];
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static short *sample_data[9];
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static int sample_size;
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public:
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SudokuSound();
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~SudokuSound();
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void play(char note);
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};
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int SudokuSound::frequencies[9] = {
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880, // A(5)
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988, // B(5)
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1046, // C(5)
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1174, // D(5)
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1318, // E(5)
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1396, // F(5)
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1568, // G(5)
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1760, // H (A6)
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1976 // I (B6)
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};
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short *SudokuSound::sample_data[9] = { 0 };
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int SudokuSound::sample_size = 0;
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// Initialize the SudokuSound class
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SudokuSound::SudokuSound() {
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sample_size = 0;
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#ifdef __APPLE__
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#elif defined(WIN32)
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#else
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# ifdef HAVE_ALSA_ASOUNDLIB_H
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handle = NULL;
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if (snd_pcm_open(&handle, "default", SND_PCM_STREAM_PLAYBACK, 0) >= 0) {
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// Initialize PCM sound stuff...
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snd_pcm_hw_params_t *params;
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snd_pcm_hw_params_alloca(¶ms);
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snd_pcm_hw_params_any(handle, params);
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snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);
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snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE);
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snd_pcm_hw_params_set_channels(handle, params, 2);
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unsigned rate = 44100;
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int dir;
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snd_pcm_hw_params_set_rate_near(handle, params, &rate, &dir);
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snd_pcm_uframes_t period = (int)rate / 4;
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snd_pcm_hw_params_set_period_size_near(handle, params, &period, &dir);
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sample_size = rate / 20;
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if (snd_pcm_hw_params(handle, params) < 0) {
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sample_size = 0;
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snd_pcm_close(handle);
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handle = NULL;
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}
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}
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# endif // HAVE_ALSA_ASOUNDLIB_H
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#endif // __APPLE__
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if (sample_size) {
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// Make each of the notes using a combination of sine and sawtooth waves
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int attack = sample_size / 10;
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int decay = 4 * sample_size / 5;
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for (int i = 0; i < 9; i ++) {
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sample_data[i] = new short[2 * sample_size];
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short *sample_ptr = sample_data[i];
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for (int j = 0; j < sample_size; j ++, sample_ptr += 2) {
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double theta = 0.05 * frequencies[i] * j / sample_size;
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double val = 0.5 * sin(2.0 * M_PI * theta) + theta - (int)theta - 0.5;
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if (j < attack) {
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*sample_ptr = (int)(32767 * val * j / attack);
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} else if (j > decay) {
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*sample_ptr = (int)(32767 * val * (sample_size - j + decay) /
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sample_size);
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} else *sample_ptr = (int)(32767 * val);
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sample_ptr[1] = *sample_ptr;
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}
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}
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}
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}
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// Cleanup the SudokuSound class
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SudokuSound::~SudokuSound() {
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#ifdef __APPLE__
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#elif defined(WIN32)
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#else
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# ifdef HAVE_ALSA_ASOUNDLIB_H
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if (handle) {
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snd_pcm_drain(handle);
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snd_pcm_close(handle);
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}
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# endif // HAVE_ALSA_ASOUNDLIB_H
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#endif // __APPLE__
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if (sample_size) {
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for (int i = 0; i < 9; i ++) {
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delete[] sample_data[i];
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}
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}
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}
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// Play a note for 250ms...
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void SudokuSound::play(char note) {
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Fl::check();
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#ifdef __APPLE__
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// TODO
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#elif defined(WIN32)
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Beep(frequencies[note - 'A'], 50);
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#else
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# ifdef HAVE_ALSA_ASOUNDLIB_H
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if (handle) {
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// Use ALSA to play the sound...
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if (snd_pcm_writei(handle, sample_data[note - 'A'], sample_size) < 0) {
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snd_pcm_prepare(handle);
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snd_pcm_writei(handle, sample_data[note - 'A'], sample_size);
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}
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usleep(50000);
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return;
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}
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# endif // HAVE_ALSA_ASOUNDLIB_H
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// Just use standard X11 stuff...
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XKeyboardState state;
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XKeyboardControl control;
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// Get original pitch and duration...
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XGetKeyboardControl(fl_display, &state);
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// Sound a tone for the given note...
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control.bell_percent = 100;
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control.bell_pitch = frequencies[note - 'A'];
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control.bell_duration = 50;
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XChangeKeyboardControl(fl_display,
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KBBellPercent | KBBellPitch | KBBellDuration,
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&control);
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XBell(fl_display, 100);
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XFlush(fl_display);
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// Restore original pitch and duration...
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control.bell_percent = state.bell_percent;
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control.bell_pitch = state.bell_pitch;
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control.bell_duration = state.bell_duration;
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XChangeKeyboardControl(fl_display,
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KBBellPercent | KBBellPitch | KBBellDuration,
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&control);
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#endif // __APPLE__
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}
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// Sudoku cell class...
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class SudokuCell : public Fl_Widget {
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@ -228,6 +411,7 @@ class Sudoku : public Fl_Window {
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SudokuCell *grid_cells_[9][9];
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Fl_Group *grid_groups_[3][3];
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int difficulty_;
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SudokuSound *sound_;
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static void check_cb(Fl_Widget *widget, void *);
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static void close_cb(Fl_Widget *widget, void *);
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@ -244,6 +428,7 @@ class Sudoku : public Fl_Window {
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public:
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Sudoku();
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~Sudoku();
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void check_game(bool highlight = true);
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void load_game();
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@ -287,6 +472,9 @@ Sudoku::Sudoku()
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};
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// Setup sound output...
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sound_ = new SudokuSound();
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// Menubar...
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prefs_.get("difficulty", difficulty_, 0);
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if (difficulty_ < 0 || difficulty_ > 3) difficulty_ = 0;
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@ -349,12 +537,16 @@ Sudoku::Sudoku()
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resize(X, X, W, H);
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}
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// Load the previous game...
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load_game();
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set_title();
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}
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// Destroy the sudoku window...
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Sudoku::~Sudoku() {
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delete sound_;
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}
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// Check for a solution to the game...
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void
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Sudoku::check_cb(Fl_Widget *widget, void *) {
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@ -634,6 +826,8 @@ Sudoku::new_game(time_t seed) {
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break;
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}
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}
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sound_->play('A' + t - 1);
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}
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}
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}
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@ -727,10 +921,15 @@ Sudoku::solve_game() {
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for (i = 0; i < 9; i ++)
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for (j = 0; j < 9; j ++) {
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SudokuCell *cell = grid_cells_[i][j];
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bool play_note = false;
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if (cell->value() != grid_values_[i][j]) play_note = true;
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cell->value(grid_values_[i][j]);
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cell->readonly(1);
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cell->color(fl_color_average(FL_GRAY, FL_GREEN, 0.5f));
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if (play_note) sound_->play('A' + cell->value() - 1);
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}
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}
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@ -740,7 +939,13 @@ int
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main(int argc, char *argv[]) {
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Sudoku s;
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// Show the game...
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s.show(argc, argv);
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// Load the previous game...
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s.load_game();
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// Run until the user quits...
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return (Fl::run());
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}
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