[pulseaudio-commits] r2318 - in /branches/glitch-free/src/pulsecore: sample-util.c sample-util.h

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Author: lennart
Date: Thu May  1 21:09:03 2008
New Revision: 2318

URL: http://0pointer.de/cgi-bin/viewcvs.cgi?rev=2318&root=pulseaudio&view=rev
Log:
add new function pa_sample_clamp()

Modified:
    branches/glitch-free/src/pulsecore/sample-util.c
    branches/glitch-free/src/pulsecore/sample-util.h

Modified: branches/glitch-free/src/pulsecore/sample-util.c
URL: http://0pointer.de/cgi-bin/viewcvs.cgi/branches/glitch-free/src/pulsecore/sample-util.c?rev=2318&root=pulseaudio&r1=2317&r2=2318&view=diff
==============================================================================
--- branches/glitch-free/src/pulsecore/sample-util.c (original)
+++ branches/glitch-free/src/pulsecore/sample-util.c Thu May  1 21:09:03 2008
@@ -1000,3 +1000,34 @@
 
     return ret;
 }
+
+void pa_sample_clamp(pa_sample_format_t format, void *dst, size_t dstr, const void *src, size_t sstr, unsigned n) {
+
+    const float *s;
+    float *d;
+
+    if (format != PA_SAMPLE_FLOAT32BE && format != PA_SAMPLE_FLOAT32LE)
+        return;
+
+    s = src;
+    d = dst;
+
+    if (format == PA_SAMPLE_FLOAT32NE) {
+        for (; n > 0; n--) {
+            *d = PA_CLAMP_UNLIKELY(*s, -1.0, 1.0);
+
+            s = (const float*) ((const uint8_t*) s + sstr);
+            d = (float*) ((uint8_t*) d + dstr);
+        }
+    } else
+        for (; n > 0; n--) {
+            float f;
+
+            f = PA_FLOAT32_SWAP(*s);
+            f = PA_CLAMP_UNLIKELY(f, -1.0, 1.0);
+            *d = PA_FLOAT32_SWAP(f);
+
+            s = (const float*) ((const uint8_t*) s + sstr);
+            d = (float*) ((uint8_t*) d + dstr);
+        }
+}

Modified: branches/glitch-free/src/pulsecore/sample-util.h
URL: http://0pointer.de/cgi-bin/viewcvs.cgi/branches/glitch-free/src/pulsecore/sample-util.h?rev=2318&root=pulseaudio&r1=2317&r2=2318&view=diff
==============================================================================
--- branches/glitch-free/src/pulsecore/sample-util.h (original)
+++ branches/glitch-free/src/pulsecore/sample-util.h Thu May  1 21:09:03 2008
@@ -78,4 +78,6 @@
 void pa_interleave(const void *src[], unsigned channels, void *dst, size_t ss, unsigned n);
 void pa_deinterleave(const void *src, void *dst[], unsigned channels, size_t ss, unsigned n);
 
+void pa_sample_clamp(pa_sample_format_t format, void *dst, size_t dstr, const void *src, size_t sstr, unsigned n);
+
 #endif