1 files changed, 103 insertions, 0 deletions
diff --git a/src/pulsecore/sconv-s16le.c b/src/pulsecore/sconv-s16le.c
new file mode 100644
index 00000000..d8b93cbd
--- /dev/null
+++ b/src/pulsecore/sconv-s16le.c
@@ -0,0 +1,103 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+ 
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2 of the License,
+  or (at your option) any later version.
+ 
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+ 
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+#include <inttypes.h>
+
+#include <liboil/liboilfuncs.h>
+
+#include <pulsecore/sconv.h>
+#include <pulsecore/log.h>
+
+#include "endianmacros.h"
+
+#include "sconv-s16le.h"
+
+#ifndef INT16_FROM
+#define INT16_FROM INT16_FROM_LE
+#endif
+
+#ifndef INT16_TO
+#define INT16_TO INT16_TO_LE
+#endif
+
+#ifndef SWAP_WORDS
+#ifdef WORDS_BIGENDIAN
+#define SWAP_WORDS 1
+#else
+#define SWAP_WORDS 0
+#endif
+#endif
+
+void pa_sconv_s16le_to_float32ne(unsigned n, const void *a, float *b) {
+    const int16_t *ca = a;
+
+    assert(a);
+    assert(b);
+
+#if SWAP_WORDS == 1
+    
+    for (; n > 0; n--) {
+        int16_t s = *(ca++);
+        *(b++) = ((float) INT16_FROM(s))/0x7FFF;
+    }
+
+#else
+{
+    static const double add = 0, factor = 1.0/0x7FFF;
+    oil_scaleconv_f32_s16(b, ca, n, &add, &factor);
+}
+#endif
+}
+
+void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, void *b) {
+    int16_t *cb = b;
+    
+    assert(a);
+    assert(b);
+
+#if SWAP_WORDS == 1
+    
+    for (; n > 0; n--) {
+        int16_t s;
+        float v = *(a++);
+
+        if (v > 1)
+            v = 1;
+        
+        if (v < -1)
+            v = -1;
+
+        s = (int16_t) (v * 0x7FFF);
+        *(cb++) = INT16_TO(s);
+    }
+
+#else
+{
+    static const double add = 0, factor = 0x7FFF;
+    oil_scaleconv_s16_f32(cb, a, n, &add, &factor);
+}
+#endif
+}