Initial commit of Monkey's Audio (.ape/.mac) support. Note that Monkey's is an extremely CPU-intensive codec, and that the decoding speed is directly related to the compression level (-c1000, -c2000, -c3000, -c4000 or -c5000) used when encoding the file. Current performance is: -c1000 to -c3000 are realtime on a Gigabeat, -c1000 is realtime on Coldfire targets (H100, H300 and Cowon), and nothing is realtime on PortalPlayer targets (iPods, H10, Sansa). Hopefully this can be improved. More information at FS #7256.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13562 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 140 insertions, 0 deletions

diff --git a/apps/codecs/demac/libdemac/vector_math16.h b/apps/codecs/demac/libdemac/vector_math16.h
new file mode 100644
index 0000000000..5d82abe930
--- /dev/null
+++ b/apps/codecs/demac/libdemac/vector_math16.h
@@ -0,0 +1,140 @@
+/*
+
+libdemac - A Monkey's Audio decoder
+
+$Id:$
+
+Copyright (C) Dave Chapman 2007
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program 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 General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
+
+*/
+
+static inline void vector_add(int16_t* v1, int16_t* v2)
+{
+#if ORDER > 32
+    int order = (ORDER >> 5);
+    while (order--)
+#endif
+    {
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+#if ORDER > 16
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+        *v1++ += *v2++;
+#endif
+    }
+}
+
+static inline void vector_sub(int16_t* v1, int16_t* v2)
+{
+#if ORDER > 32
+    int order = (ORDER >> 5);
+    while (order--)
+#endif
+    {
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+#if ORDER > 16
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+        *v1++ -= *v2++;
+#endif
+    }
+}
+
+static inline int32_t scalarproduct(int16_t* v1, int16_t* v2)
+{
+    int res = 0;
+
+#if ORDER > 16
+    int order = (ORDER >> 4);
+    while (order--)
+#endif
+    {
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+        res += *v1++ * *v2++;
+    }
+    return res;
+}