add True Audio (TTA) codec

decoding speed iPod video ~153%
But in some players, the decoding speed is not enough.
(e.g., H180 52.4% (thanks amiconn), H300 55.09% (thanks n1s))

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25994 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 29 insertions, 0 deletions

diff --git a/apps/codecs/libtta/libtta.make b/apps/codecs/libtta/libtta.make
new file mode 100644
index 0000000000..c0a799ac67
--- /dev/null
+++ b/apps/codecs/libtta/libtta.make
@@ -0,0 +1,29 @@
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+# $Id$
+#
+
+# libtta
+TTALIB := $(CODECDIR)/libtta.a
+TTALIB_SRC := $(call preprocess, $(APPSDIR)/codecs/libtta/SOURCES)
+TTALIB_OBJ := $(call c2obj, $(TTALIB_SRC))
+OTHER_SRC += $(TTALIB_SRC)
+
+$(TTALIB): $(TTALIB_OBJ)
+        $(SILENT)$(shell rm -f $@)
+        $(call PRINTS,AR $(@F))$(AR) rcs $@ $^ >/dev/null
+
+TTAFLAGS = $(filter-out -O%,$(CODECFLAGS))
+TTAFLAGS += -O3 -funroll-loops -fomit-frame-pointer
+
+$(CODECDIR)/libtta/%.o: $(ROOTDIR)/apps/codecs/libtta/%.c
+        $(SILENT)mkdir -p $(dir $@)
+        $(call PRINTS,CC $(subst $(ROOTDIR)/,,$<))$(CC) $(TTAFLAGS) -c $< -o $@
+
+$(CODECDIR)/libtta/%.o: $(ROOTDIR)/apps/codecs/libtta/%.S
+        $(SILENT)mkdir -p $(dir $@)
+        $(call PRINTS,CC $(subst $(ROOTDIR)/,,$<))$(CC) $(TTAFLAGS) -c $< -o $@