traverso: Traverso/cvs/traverso/src/core/noise.h Source File

00001 #ifndef NOISE_H
00002 #define NOISE_H
00003 
00004 /* Can be overrriden with any code that produces whitenoise between 0.0f and
00005  * 1.0f, eg (random() / (float)RAND_MAX) should be a good source of noise, but
00006  * its expensive */
00007 #ifndef GDITHER_NOISE
00008 #define GDITHER_NOISE gdither_noise()
00009 #endif
00010 
00011 inline static float gdither_noise()
00012 {
00013     static uint32_t rnd = 23232323;
00014     rnd = (rnd * 196314165) + 907633515;
00015 
00016     return rnd * 2.3283064365387e-10f;
00017 }
00018 
00019 #endif