Ecriture du test5 : intégration de PulseAudio dans le code du test4.

Le squelette est là, l'initialisation du contexte pulse audio aussi.
Reste : ouvrir les flux, écrire le callback pulse qui récupère le niveau sonore (avec timing si possible) et qui appelle le callback applicatif du test5.c


git-svn-id: file:///var/svn/2012-violon-leds/trunk@9 6be1fa4d-33ac-4c33-becc-79fcb3794bb6

1 files changed, 42 insertions, 0 deletions

diff --git a/tests/test5/compute.c b/tests/test5/compute.c
new file mode 100644
index 0000000..11a7f81
--- /dev/null
+++ b/tests/test5/compute.c
@@ -0,0 +1,42 @@
+#include "compute.h"
+
+void audio2hsv_1(gint audio_level, gint *light_h, gint *light_s, gint *light_v) {
+	// Dummy code
+	*light_h=-audio_level;
+	*light_s=audio_level;
+	*light_v=65535;
+}
+
+		
+void hsv2rgb(gint h, gint s, gint v, gint *r, gint *g, gint *b) {
+   /*
+    * Purpose:
+    * Convert HSV values to RGB values
+    * All values are in the range [0..65535]
+    */
+   float F, M, N, K;
+   int   I;
+   
+   if ( s == 0 ) {
+      /* 
+       * Achromatic case, set level of grey 
+       */
+      *r = v;
+      *g = v;
+      *b = v;
+   } else {
+      I = (int) h/(65535/6);	/* should be in the range 0..5 */
+      F = h - I;		/* fractional part */
+
+      M = v * (1 - s);
+      N = v * (1 - s * F);
+      K = v * (1 - s * (1 - F));
+
+      if (I == 0) { *r = v; *g = K; *b = M; }
+      if (I == 1) { *r = N; *g = v; *b = M; }
+      if (I == 2) { *r = M; *g = v; *b = K; }
+      if (I == 3) { *r = M; *g = N; *b = v; }
+      if (I == 4) { *r = K; *g = M; *b = v; }
+      if (I == 5) { *r = v; *g = M; *b = N; }
+   }
+}