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
author: Yoshihisa Uchida <uchida@rockbox.org> 2010-05-13 12:40:09 +0000
committer: Yoshihisa Uchida <uchida@rockbox.org> 2010-05-13 12:40:09 +0000
commit: 0f5c6d47d4fdd17260b840024880ba6dd3fdf935 (patch)
tree: 6d2526a58816aa9f6431a22a8f1a56278a445dfd
parent: 889b4a8ce838bd4191c736d01d9665c177e6d390 (diff)
download: rockbox-0f5c6d47d4fdd17260b840024880ba6dd3fdf935.tar.gz
rockbox-0f5c6d47d4fdd17260b840024880ba6dd3fdf935.zip
19 files changed, 1689 insertions, 1 deletions
diff --git a/apps/SOURCES b/apps/SOURCES
index ef81f0cfdd..8151c299b9 100644
--- a/apps/SOURCES
+++ b/apps/SOURCES
@@ -197,6 +197,7 @@ metadata/oma.c
 metadata/smaf.c
 metadata/au.c
 metadata/vox.c
+metadata/tta.c
 #endif
 #ifdef HAVE_TAGCACHE
 tagcache.c
diff --git a/apps/codecs/SOURCES b/apps/codecs/SOURCES
index e2ee53e7ee..160b8aa582 100644
--- a/apps/codecs/SOURCES
+++ b/apps/codecs/SOURCES
@@ -32,6 +32,7 @@ smaf.c
 au.c
 vox.c
 wav64.c
+tta.c
 #if defined(HAVE_RECORDING) && !defined(SIMULATOR)
 /* encoders */
 aiff_enc.c
diff --git a/apps/codecs/codecs.make b/apps/codecs/codecs.make
index 7a83e5d1da..e671932b41 100644
--- a/apps/codecs/codecs.make
+++ b/apps/codecs/codecs.make
@@ -41,6 +41,7 @@ include $(APPSDIR)/codecs/libcook/libcook.make
 include $(APPSDIR)/codecs/librm/librm.make
 include $(APPSDIR)/codecs/libatrac/libatrac.make
 include $(APPSDIR)/codecs/libpcm/libpcm.make
+include $(APPSDIR)/codecs/libtta/libtta.make
 # compile flags for codecs
 CODECFLAGS = $(filter-out -fno-strict-aliasing,$(CFLAGS)) -fstrict-aliasing \
@@ -96,6 +97,7 @@ $(CODECDIR)/smaf.codec : $(CODECDIR)/libpcm.a
 $(CODECDIR)/au.codec : $(CODECDIR)/libpcm.a
 $(CODECDIR)/vox.codec : $(CODECDIR)/libpcm.a
 $(CODECDIR)/wav64.codec : $(CODECDIR)/libpcm.a
+$(CODECDIR)/tta.codec : $(CODECDIR)/libtta.a
 $(CODECS): $(CODECLIB) # this must be last in codec dependency list
diff --git a/apps/codecs/libtta/README b/apps/codecs/libtta/README
new file mode 100644
index 0000000000..8b1a1b23c0
--- /dev/null
+++ b/apps/codecs/libtta/README
@@ -0,0 +1,72 @@
+TTA Hardware Players Library
+============================
+Version 1.2, (c) 2004 Alexander Djourik. All rights reserved.
+* Introduction
+This library provides to decode a multichannel 8,16 and 24
+bits TTA audio files. TTA is a lossless audio format. Being
+"lossless" means that no data/quality is lost in the compression
+- when uncompressed, the data will be identical to the original.
+The compression ratios of TTA depend on the type of music file
+being compressed, but the compression size will generally range
+between 30% - 70% of the original.
+TTA format supports both of ID3v1/v2 tags. Detailed format
+description is available at http://www.true-audio.com.
+The decoder process has a minimal system requirements and does
+not required to create a big additional memory pools. As the
+TTA algorithms has a same system requirements both for decoding
+and for encoding processes - the TTA recorder can be easily
+realized also.
+* Changes
+  14/04/2004 1.0 Initial release
+  16/04/2004 1.1 Code optimization
+                 Code clean-up
+  29/10/2004 1.2 ID3 tags support
+                 Code clean-up
+* To Do
+  - TTA recorder functions.
+* Developers
+  Alexander Djourik <ald@true-audio.com>
+  Pavel Zhilin <pzh@true-audio.com>
+* Copying
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. Neither the name of the True Audio Software nor the names of its
+   contributors may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+* See also
+Please visit the TTA homepage at http://tta.sourceforge.net for the
+latest in news and downloads.
diff --git a/apps/codecs/libtta/README.rockbox b/apps/codecs/libtta/README.rockbox
new file mode 100644
index 0000000000..d605986d46
--- /dev/null
+++ b/apps/codecs/libtta/README.rockbox
@@ -0,0 +1,34 @@
+Library: True Audio
+Imported by : Yoshihisa Uchida
+Import date : 2010-03-05
+Baseed by   : TTA library version 1.2 for hardware players (ttalib-hwplayer-1.2.tgz)
+              from http://true-audio.com/Free_Downloads
+This directory contains a decoder version of True Auido.
+LICENSING INFORMATION
+True Audio license is described in the README file or each source file (excepts filter_arm.S) 
+in this directory.
+Limitation
+In some players, the decoding speed is not enough ( < 110%). 
+(For example, H180: decoding speed  < 60%)
+IMPORT DETAILS
+The .[ch] files from ttalib-hwplayer-1.2.tgz were imported into Rockbox. 
+But the following files do not include.
+   Makefile
+   tta.vcproj
+   samples/*
+When source files import in Rockbox, I changed below.
+all files
+  - TAB => 4 spaces.
+  - // style comments changes to /* */ style.
+Moreover, I modify to optimize the decoding speed.
diff --git a/apps/codecs/libtta/SOURCES b/apps/codecs/libtta/SOURCES
new file mode 100644
index 0000000000..35f2660dd7
--- /dev/null
+++ b/apps/codecs/libtta/SOURCES
@@ -0,0 +1,4 @@
+ttadec.c
+#ifdef CPU_ARM
+filter_arm.S
+#endif
diff --git a/apps/codecs/libtta/filter.h b/apps/codecs/libtta/filter.h
new file mode 100644
index 0000000000..6eef6dcf42
--- /dev/null
+++ b/apps/codecs/libtta/filter.h
@@ -0,0 +1,136 @@
+/*
+ * filter.h
+ *
+ * Description:  TTAv1 filter functions
+ * Developed by: Alexander Djourik <ald@true-audio.com>
+ *               Pavel Zhilin <pzh@true-audio.com>
+ *
+ * Copyright (c) 2004 True Audio Software. All rights reserved.
+ *
+ */
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the True Audio Software nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef FILTER_H
+#define FILTER_H
+///////// Filter Settings //////////
+static int flt_set[3] = {10, 9, 10};
+#ifdef CPU_ARM
+int hybrid_filter(fltst *fs, int *in); /* implements in filter_arm.S */
+#else
+static inline void
+memshl (register int *pA) {
+    register int *pB = pA + 16;
+    *pA++ = *pB++;
+    *pA++ = *pB++;
+    *pA++ = *pB++;
+    *pA++ = *pB++;
+    *pA++ = *pB++;
+    *pA++ = *pB++;
+    *pA++ = *pB++;
+    *pA   = *pB;
+}
+static inline void
+hybrid_filter (fltst *fs, int *in) {
+    register int *pA = fs->dl + fs->index;
+    register int *pB = fs->qm;
+    register int *pM = fs->dx + fs->index;
+    register int sum = fs->round;
+    if (!fs->error) {
+        sum += *pA++ * *pB++;
+        sum += *pA++ * *pB++;
+        sum += *pA++ * *pB++;
+        sum += *pA++ * *pB++;
+        sum += *pA++ * *pB++;
+        sum += *pA++ * *pB++;
+        sum += *pA++ * *pB++;
+        sum += *pA   * *pB;
+        pM += 8;
+    } else if (fs->error < 0) {
+        sum += *pA++ * (*pB++ -= *pM++);
+        sum += *pA++ * (*pB++ -= *pM++);
+        sum += *pA++ * (*pB++ -= *pM++);
+        sum += *pA++ * (*pB++ -= *pM++);
+        sum += *pA++ * (*pB++ -= *pM++);
+        sum += *pA++ * (*pB++ -= *pM++);
+        sum += *pA++ * (*pB++ -= *pM++);
+        sum += *pA   * (*pB   -= *pM++);
+    } else {
+        sum += *pA++ * (*pB++ += *pM++);
+        sum += *pA++ * (*pB++ += *pM++);
+        sum += *pA++ * (*pB++ += *pM++);
+        sum += *pA++ * (*pB++ += *pM++);
+        sum += *pA++ * (*pB++ += *pM++);
+        sum += *pA++ * (*pB++ += *pM++);
+        sum += *pA++ * (*pB++ += *pM++);
+        sum += *pA   * (*pB   += *pM++);
+    }
+    pB = pA++;
+    fs->error = *in;
+    *in += (sum >> fs->shift);
+    *pA = *in;
+    *pM-- = ((*pB-- >> 30) | 1) << 2;
+    *pM-- = ((*pB-- >> 30) | 1) << 1;
+    *pM-- = ((*pB-- >> 30) | 1) << 1;
+    *pM   = ((*pB   >> 30) | 1);
+    *(pA-1) = *(pA-0) - *(pA-1);
+    *(pA-2) = *(pA-1) - *(pA-2);
+    *(pA-3) = *(pA-2) - *(pA-3);
+    /*
+     * Rockbox speciffic
+     *     in order to make speed up, memshl() is executed at the rate once every 16 times. 
+     */
+    if (++fs->index == 16)
+    {
+        memshl (fs->dl);
+        memshl (fs->dx);
+        fs->index = 0;
+    }
+}
+#endif
+static inline void
+filter_init (fltst *fs, int shift) {
+    ci->memset (fs, 0, sizeof(fltst));
+    fs->shift = shift;
+    fs->round = 1 << (shift - 1);
+    fs->index = 0;
+}
+#endif /* FILTER_H */
diff --git a/apps/codecs/libtta/filter_arm.S b/apps/codecs/libtta/filter_arm.S
new file mode 100644
index 0000000000..37c515d3a9
--- /dev/null
+++ b/apps/codecs/libtta/filter_arm.S
@@ -0,0 +1,203 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Yoshihisa Uchida
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+/*
+ * The following are assembler optimised version of
+ * void hybrid_filter(fltst *fs, int *in)
+ */
+#ifdef USE_IRAM
+    .section .icode, "ax", %progbits
+#else
+    .text
+#endif
+    .align
+    .global  hybrid_filter
+    .type    hybrid_filter, %function
+hybrid_filter:
+    @ input: r0 = fs, r1 = in
+    stmdb    sp!, {r4 - r12, lr}
+    @ get fs members
+    @ r2 pA  := fs->dl + fs->index
+    @ r3 pM  := fs->dx + fs->index
+    @ r4 pB  := fs->qm
+    @ r5 fs->index
+    @ r6 fs->error
+    @ lr sum := fs->round
+    add      r2,  r0, #148                       @ r2 = fs->dl
+    add      r3,  r0, #52                        @ r3 = fs->dx
+    add      r4,  r0, #20                        @ r4 = fs->qm
+    ldmia    r0,  {r5, r6, lr}                   @ r5 = fs->index
+                                                 @ r6 = fs->error
+                                                 @ lr = fs->round
+    mov      r5,  r5, asl #2
+    add      r2,  r2, r5                         @ r2 = fs->dl + fs->index
+    add      r3,  r3, r5                         @ r3 = fs->dx + fs->index
+    cmp      r6,  #0
+    bne      .hf_positive
+    @ case fs->error == 0
+    add      r3,  r3, #32
+    ldmia    r4!, {r5, r6,  r7,  r8 }
+    ldmia    r2!, {r9, r10, r11, r12}
+    mla      lr,  r5, r9,  lr
+    mla      lr,  r6, r10, lr
+    mla      lr,  r7, r11, lr
+    mla      lr,  r8, r12, lr
+    ldmia    r4!, {r5, r6,  r7,  r8 }
+    b        .hf2
+.hf_positive:
+    blt      .hf_negative
+    @ case fs->error > 0
+    ldmia    r4,  {r5, r6,  r7,  r8 }
+    ldmia    r3!, {r9, r10, r11, r12}
+    add      r5,  r5, r9
+    add      r6,  r6, r10
+    add      r7,  r7, r11
+    add      r8,  r8, r12
+    stmia    r4!, {r5, r6,  r7,  r8 }            @ update fs->qm[0], ..., fs->qm[3]
+    ldmia    r2!, {r9, r10, r11, r12}
+    mla      lr,  r5, r9,  lr
+    mla      lr,  r6, r10, lr
+    mla      lr,  r7, r11, lr
+    mla      lr,  r8, r12, lr
+    ldmia    r4,  {r5, r6,  r7,  r8 }
+    ldmia    r3!, {r9, r10, r11, r12}
+    add      r5,  r5, r9
+    add      r6,  r6, r10
+    add      r7,  r7, r11
+    add      r8,  r8, r12
+    stmia    r4!, {r5, r6,  r7,  r8 }            @ update fs->qm[4], ..., fs->qm[7]
+    b .hf2
+.hf_negative:
+    @ case fs->error < 0
+    ldmia    r4,  {r5, r6,  r7,  r8 }
+    ldmia    r3!, {r9, r10, r11, r12}
+    sub      r5,  r5, r9
+    sub      r6,  r6, r10
+    sub      r7,  r7, r11
+    sub      r8,  r8, r12
+    stmia    r4!, {r5, r6,  r7,  r8 }            @ update fs->qm[0], ..., fs->qm[3]
+    ldmia    r2!, {r9, r10, r11, r12}
+    mla      lr,  r5, r9,  lr
+    mla      lr,  r6, r10, lr
+    mla      lr,  r7, r11, lr
+    mla      lr,  r8, r12, lr
+    ldmia    r4,  {r5, r6,  r7,  r8 }
+    ldmia    r3!, {r9, r10, r11, r12}
+    sub      r5,  r5, r9
+    sub      r6,  r6, r10
+    sub      r7,  r7, r11
+    sub      r8,  r8, r12
+    stmia    r4!, {r5, r6,  r7,  r8 }            @ update fs->qm[4], ..., fs->qm[7]
+.hf2:
+    ldmia    r2!, {r9, r10, r11, r12}
+    mla      lr,  r5, r9,  lr
+    mla      lr,  r6, r10, lr
+    mla      lr,  r7, r11, lr
+    mla      lr,  r8, r12, lr
+    @ fs->error = *in;
+    @ *in += (sum >> fs->shift)
+    @ *pA = *in
+    ldr      r5,  [r1]                           @ r5 = *in
+    ldr      r6,  [r0, #12]                      @ r6 = fs->shift
+    add      lr,  r5, lr, asr r6
+    str      lr,  [r1]                           @ *in += (sum >> fs->shift)
+    @ update fs->index
+    ldr      r1,  [r0]                           @ r1 = fs->index
+    add      r1,  r1,  #1
+    ands     r1,  r1,  #15                       @ set Z flag (after this, CPSR must keep !!)
+    stmia    r0,  {r1, r5}                       @ fs->index = (++fs->index & 15)
+                                                 @ fs->error = (original) *in
+    @ change *pM, *(pM-1), *(pM-2), *(pM-3)
+    @ r9  = *(pA-4), r5 = *(pM-3)
+    @ r10 = *(pA-3), r6 = *(pM-2)
+    @ r11 = *(pA-2), r7 = *(pM-1)
+    @ r12 = *(pA-1), r8 = *(pM-0)
+    @ lr  = *(pA-0)
+    mov      r4,  #1
+    orr      r5,  r4, r9,  asr #30
+    orr      r6,  r4, r10, asr #30
+    orr      r7,  r4, r11, asr #30
+    orr      r8,  r4, r12, asr #30
+    mov      r6,  r6, lsl #1
+    mov      r7,  r7, lsl #1
+    mov      r8,  r8, lsl #2
+    @ change *(pA-1), *(pA-2), *(pA-3)
+    sub      r12, lr,  r12
+    sub      r11, r12, r11
+    sub      r10, r11, r10
+    @ check fs->index is zero
+    beq      .hf_memshl
+    @ set to the memory: *pA, *(pA-1), *(pA-2), *(pA-3), *pM, *(pM-1), *(pM-2), *(pM-3)
+    stmda    r2,  {r10, r11, r12, lr}
+    stmda    r3,  {r5,  r6,  r7,  r8}
+    ldmfd    sp!, {r4-r12, pc}                   @ hybrid_filter end (when fs->index != 0)
+.hf_memshl:
+    @ memshl (fs->dl)
+    @ r9  = fs->dl[16 + 3]
+    @ r10 = fs->dl[16 + 4]
+    @ r11 = fs->dl[16 + 5]
+    @ r12 = fs->dl[16 + 6]
+    @ lr  = fs->dl[16 + 7]
+    add      r2,  r0,  #212                      @ r2 = fs->dl + 16
+    ldmia    r2,  {r1, r3, r4}
+    sub      r2,  r2,  #64                       @ r2 = fs->dl
+    stmia    r2,  {r1, r3, r4, r9 - r12, lr}
+    @ memshl (fs->dx)
+    @ r5 = fs->dx[16 + 4]
+    @ r6 = fs->dx[16 + 5]
+    @ r7 = fs->dx[16 + 6]
+    @ r8 = fs->dx[16 + 7]
+    add      r9,  r0,  #116                      @ r9 = fs->dx + 16
+    ldmia    r9,  {r1, r2, r3, r4}
+    sub      r9,  r9,  #64                       @ r9 = fs->dx
+    stmia    r9,  {r1 - r8}
+    ldmfd    sp!, {r4 - r12, pc}                 @ hybrid_filter end (when fs->index == 0)
+hybrid_filter_end:
+    .size    hybrid_filter, hybrid_filter_end - hybrid_filter
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 $@
diff --git a/apps/codecs/libtta/ttadec.c b/apps/codecs/libtta/ttadec.c
new file mode 100644
index 0000000000..027b78a17e
--- /dev/null
+++ b/apps/codecs/libtta/ttadec.c
@@ -0,0 +1,576 @@
+/*
+ * ttadec.c
+ *
+ * Description:  TTAv1 decoder library for HW players
+ * Developed by: Alexander Djourik <ald@true-audio.com>
+ *               Pavel Zhilin <pzh@true-audio.com>
+ *
+ * Copyright (c) 2004 True Audio Software. All rights reserved.
+ *
+ */
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the True Audio Software nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "codeclib.h"
+#include "ttalib.h"
+#include "ttadec.h"
+#include "filter.h"
+/******************* static variables and structures *******************/
+static unsigned char isobuffers[ISO_BUFFERS_SIZE + 4] IBSS_ATTR;
+static unsigned char *iso_buffers_end = isobuffers + ISO_BUFFERS_SIZE;
+static unsigned int pcm_buffer_size;
+static decoder tta[MAX_NCH];     /* decoder state */
+/* Rockbox speciffic: cache is defined in get_samples() (non static value) */
+/* static int     cache[MAX_NCH];   // decoder cache */
+tta_info *ttainfo;               /* currently playing file info */
+static unsigned int fframes;     /* number of frames in file */
+static unsigned int framelen;    /* the frame length in samples */
+static unsigned int lastlen;     /* the length of the last frame in samples */
+static unsigned int data_pos;    /* currently playing frame index */
+static unsigned int data_cur;    /* the playing position in frame */
+static int maxvalue;             /* output data max value */
+/* Rockbox speciffic: seek_table is static size */
+static unsigned int seek_table[MAX_SEEK_TABLE_SIZE]; /* the playing position table */
+static unsigned int st_state;    /* seek table status */
+static unsigned int frame_crc32;
+static unsigned int bit_count;
+static unsigned int bit_cache;
+static unsigned char *bitpos;
+/* Rockbox speciffic: deletes read_id3_tags(). */
+/* static int read_id3_tags (tta_info *info); */
+/********************* rockbox helper functions *************************/
+/* emulate stdio functions */
+static int fread(void *ptr, size_t size, size_t nobj)
+{
+    size_t read_size;
+    unsigned char *buffer = ci->request_buffer(&read_size, size * nobj);
+    if (read_size > 0)
+    {
+        ci->memcpy(ptr, buffer, read_size);
+        ci->advance_buffer(read_size);
+    }
+    return read_size;
+}
+static int fseek(long offset, int origin)
+{
+    switch (origin)
+    {
+        case SEEK_CUR:
+            ci->advance_buffer(offset);
+            break;
+        case SEEK_SET:
+            ci->seek_buffer(offset);
+            break;
+        case SEEK_END:
+            ci->seek_buffer(offset + ci->id3->filesize);
+            break;
+        default:
+            return -1;
+    }
+    return 0;
+}
+/************************* crc32 functions *****************************/
+#define UPDATE_CRC32(x, crc) crc = \
+    (((crc>>8) & 0x00FFFFFF) ^ crc32_table[(crc^x) & 0xFF])
+static unsigned int 
+crc32 (unsigned char *buffer, unsigned int len) {
+    unsigned int i;
+    unsigned int crc = 0xFFFFFFFF;
+    for (i = 0; i < len; i++) UPDATE_CRC32(buffer[i], crc);
+    return (crc ^ 0xFFFFFFFF);
+}
+/************************* bit operations ******************************/
+#define GET_BINARY(value, bits) \
+    while (bit_count < bits) { \
+        if (bitpos == iso_buffers_end) { \
+            if (!fread(isobuffers, 1, ISO_BUFFERS_SIZE)) { \
+                ttainfo->STATE = READ_ERROR; \
+                return -1; \
+            } \
+            bitpos = isobuffers; \
+        } \
+        UPDATE_CRC32(*bitpos, frame_crc32); \
+        bit_cache |= *bitpos << bit_count; \
+        bit_count += 8; \
+        bitpos++; \
+    } \
+    value = bit_cache & bit_mask[bits]; \
+    bit_cache >>= bits; \
+    bit_count -= bits; \
+    bit_cache &= bit_mask[bit_count];
+#define GET_UNARY(value) \
+    value = 0; \
+    while (!(bit_cache ^ bit_mask[bit_count])) { \
+        if (bitpos == iso_buffers_end) { \
+            if (!fread(isobuffers, 1, ISO_BUFFERS_SIZE)) { \
+                ttainfo->STATE = READ_ERROR; \
+                return -1; \
+            } \
+            bitpos = isobuffers; \
+        } \
+        value += bit_count; \
+        bit_cache = *bitpos++; \
+        UPDATE_CRC32(bit_cache, frame_crc32); \
+        bit_count = 8; \
+    } \
+    while (bit_cache & 1) { \
+        value++; \
+        bit_cache >>= 1; \
+        bit_count--; \
+    } \
+    bit_cache >>= 1; \
+    bit_count--;
+/************************* rice operations ******************************/
+static inline int update_rice(int value, adapt *rice, int depth,
+                              const unsigned int *shift_table)
+{
+    if (depth > 0)
+    {
+        rice->sum1 += value - (rice->sum1 >> 4);
+        if (rice->k1 > 0 && rice->sum1 < shift_table[rice->k1])
+            rice->k1--;
+        else if (rice->sum1 > shift_table[rice->k1 + 1])
+            rice->k1++;
+        value += *(shift_table + rice->k0 - 4);
+    }
+    rice->sum0 += value - (rice->sum0 >> 4);
+    if (rice->k0 > 0 && rice->sum0 < shift_table[rice->k0])
+        rice->k0--;
+    else if (rice->sum0 > shift_table[rice->k0 + 1])
+        rice->k0++;
+    return DEC(value);
+}
+/************************* buffer functions ******************************/
+static void init_buffer_read(void) {
+    frame_crc32 = 0xFFFFFFFFUL;
+    bit_count = bit_cache = 0;
+    bitpos = iso_buffers_end;
+}
+static int done_buffer_read(void) {
+    unsigned int crc32, rbytes;
+    frame_crc32 ^= 0xFFFFFFFFUL;
+    rbytes = iso_buffers_end - bitpos;
+    if (rbytes < sizeof(int)) {
+        ci->memcpy(isobuffers, bitpos, 4);
+        if (!fread(isobuffers + rbytes, 1, ISO_BUFFERS_SIZE - rbytes))
+            return -1;
+        bitpos = isobuffers;
+    }
+    ci->memcpy(&crc32, bitpos, 4);
+    crc32 = ENDSWAP_INT32(crc32);
+    bitpos += sizeof(int);
+    
+    if (crc32 != frame_crc32) return -1;
+    bit_cache = bit_count = 0;
+    frame_crc32 = 0xFFFFFFFFUL;
+    return 0;
+}
+/************************* decoder functions ****************************/
+const char *get_error_str (int error) {
+    switch (error) {
+    case NO_ERROR:      return "No errors found";
+    case OPEN_ERROR:    return "Can't open file";
+    case FORMAT_ERROR:  return "Not supported file format";
+    case FILE_ERROR:    return "File is corrupted";
+    case READ_ERROR:    return "Can't read from file";
+    case MEMORY_ERROR:  return "Insufficient memory available";
+    default:            return "Unknown error code";
+    }
+}
+int set_tta_info (tta_info *info)
+{
+    unsigned int checksum;
+    unsigned int datasize;
+    unsigned int origsize;
+    tta_hdr ttahdr;
+    /* clear the memory */
+    ci->memset (info, 0, sizeof(tta_info));
+    /* skip id3v2 tags */
+    fseek(ci->id3->id3v2len, SEEK_SET);
+    /* read TTA header */
+    if (fread (&ttahdr, 1, sizeof (ttahdr)) == 0) {
+        info->STATE = READ_ERROR;
+        return -1;
+    }
+    /* check for TTA3 signature */
+    if (ENDSWAP_INT32(ttahdr.TTAid) != TTA1_SIGN) {
+        DEBUGF("ID error: %x\n", ENDSWAP_INT32(ttahdr.TTAid));
+        info->STATE = FORMAT_ERROR;
+        return -1;
+    }
+    ttahdr.CRC32 = ENDSWAP_INT32(ttahdr.CRC32);
+    checksum = crc32((unsigned char *) &ttahdr,
+    sizeof(tta_hdr) - sizeof(int));
+    if (checksum != ttahdr.CRC32) {
+        DEBUGF("CRC error: %x != %x\n", ttahdr.CRC32, checksum);
+        info->STATE = FILE_ERROR;
+        return -1;
+    }
+    ttahdr.AudioFormat = ENDSWAP_INT16(ttahdr.AudioFormat);
+    ttahdr.NumChannels = ENDSWAP_INT16(ttahdr.NumChannels);
+    ttahdr.BitsPerSample = ENDSWAP_INT16(ttahdr.BitsPerSample);
+    ttahdr.SampleRate = ENDSWAP_INT32(ttahdr.SampleRate);
+    ttahdr.DataLength = ENDSWAP_INT32(ttahdr.DataLength);
+    /* check for player supported formats */
+    if (ttahdr.AudioFormat != WAVE_FORMAT_PCM ||
+        ttahdr.NumChannels > MAX_NCH ||
+        ttahdr.BitsPerSample > MAX_BPS ||(
+        ttahdr.SampleRate != 16000 &&
+        ttahdr.SampleRate != 22050 &&
+        ttahdr.SampleRate != 24000 &&
+        ttahdr.SampleRate != 32000 &&
+        ttahdr.SampleRate != 44100 &&
+        ttahdr.SampleRate != 48000 &&
+        ttahdr.SampleRate != 64000 &&
+        ttahdr.SampleRate != 88200 &&
+        ttahdr.SampleRate != 96000)) {
+        info->STATE = FORMAT_ERROR;
+        DEBUGF("illegal audio format: %d channels: %d samplerate: %d\n",
+               ttahdr.AudioFormat, ttahdr.NumChannels, ttahdr.SampleRate);
+        return -1;
+    }
+    /* fill the File Info */
+    info->NCH = ttahdr.NumChannels;
+    info->BPS = ttahdr.BitsPerSample;
+    info->BSIZE = (ttahdr.BitsPerSample + 7)/8;
+    info->FORMAT = ttahdr.AudioFormat;
+    info->SAMPLERATE = ttahdr.SampleRate;
+    info->DATALENGTH = ttahdr.DataLength;
+    info->FRAMELEN = (int) MULTIPLY_FRAME_TIME(ttahdr.SampleRate);
+    info->LENGTH = ttahdr.DataLength / ttahdr.SampleRate;
+    info->DATAPOS = ci->id3->id3v2len;
+    info->FILESIZE = ci->id3->filesize;
+    datasize = info->FILESIZE - info->DATAPOS;
+    origsize = info->DATALENGTH * info->BSIZE * info->NCH;
+    /* info->COMPRESS = (double) datasize / origsize; */
+    info->BITRATE = (int) ((uint64_t) datasize * info->SAMPLERATE * info->NCH * info->BPS
+                                               / (origsize * 1000LL));
+    return 0;
+}
+static void rice_init(adapt *rice, unsigned int k0, unsigned int k1) {
+    rice->k0 = k0;
+    rice->k1 = k1;
+    rice->sum0 = shift_16[k0];
+    rice->sum1 = shift_16[k1];
+}
+static void decoder_init(decoder *tta, int nch, int byte_size) {
+    int shift = flt_set[byte_size - 1];
+    int i;
+    for (i = 0; i < nch; i++) {
+        filter_init(&tta[i].fst, shift);
+        rice_init(&tta[i].rice, 10, 10);
+        tta[i].last = 0;
+    }
+}
+static void seek_table_init (unsigned int *seek_table,
+    unsigned int len, unsigned int data_offset) {
+    unsigned int *st, frame_len;
+    for (st = seek_table; st < (seek_table + len); st++) {
+        frame_len = ENDSWAP_INT32(*st);
+        *st = data_offset;
+        data_offset += frame_len;
+    }
+}
+int set_position (unsigned int pos, enum tta_seek_type type)
+{
+    unsigned int i;
+    unsigned int seek_pos;
+    if (type == TTA_SEEK_TIME)
+    {
+        if (pos >= fframes)
+            pos = fframes -1;
+    }
+    else
+    {
+        pos -= ttainfo->DATAPOS;
+        for (i = 1; i < fframes; i++)
+        {
+            if (seek_table[i] > pos)
+                break;
+        }
+        pos = i - 1;
+    }
+    if (!st_state) {
+        ttainfo->STATE = FILE_ERROR;
+        return -1;
+    }
+    seek_pos = ttainfo->DATAPOS + seek_table[data_pos = pos];
+    if (fseek(seek_pos, SEEK_SET) < 0) {
+        ttainfo->STATE = READ_ERROR;
+        return -1;
+    }
+    data_cur = 0;
+    framelen = 0;
+    /* init bit reader */
+    init_buffer_read();
+    return data_pos * ttainfo->FRAMELEN;
+}
+int player_init (tta_info *info) {
+    unsigned int checksum;
+    unsigned int data_offset;
+    unsigned int st_size;
+    ttainfo = info;
+    framelen = 0;
+    data_pos = 0;
+    data_cur = 0;
+    lastlen = ttainfo->DATALENGTH % ttainfo->FRAMELEN;
+    fframes = ttainfo->DATALENGTH / ttainfo->FRAMELEN + (lastlen ? 1 : 0);
+    st_size = (fframes + 1) * sizeof(int);
+    /*
+     * Rockbox speciffic
+     *    playable tta file is to MAX_SEEK_TABLE_SIZE frames
+     *    about 1:08:15 (frequency 44.1 kHz)
+     */
+    if (fframes > MAX_SEEK_TABLE_SIZE)
+    {
+        LOGF("frame is too many: %d > %d", fframes, MAX_SEEK_TABLE_SIZE);
+        return -1;
+    }
+    /* read seek table */
+    if (!fread(seek_table, st_size, 1)) {
+        ttainfo->STATE = READ_ERROR;
+        return -1;
+    }
+    checksum = crc32((unsigned char *) seek_table, st_size - sizeof(int));
+    st_state = (checksum == ENDSWAP_INT32(seek_table[fframes]));
+    data_offset = sizeof(tta_hdr) + st_size;
+    /* init seek table */
+    seek_table_init(seek_table, fframes, data_offset);
+    /* init bit reader */
+    init_buffer_read();
+    /*
+     * Rockbox speciffic
+     *    because pcm data is int32_t, does not multiply ttainfo->BSIZE.
+     */
+    pcm_buffer_size = PCM_BUFFER_LENGTH * ttainfo->NCH;
+    maxvalue = (1UL << ttainfo->BPS) - 1;
+    return 0;
+}
+/*
+ * Rockbox specffic
+ *    because the seek table is static size buffer, player_stop() is nooperation function.
+ */
+void player_stop (void) {
+/*
+    if (seek_table) {
+        free(seek_table);
+        seek_table = NULL;
+    }
+*/
+}
+/*
+ * Rockbox speciffic
+ *   with the optimization, the decoding logic is modify a little.
+ */
+int get_samples (int32_t *buffer) {
+    unsigned int k, depth, unary, binary;
+    int32_t *p = buffer;
+    decoder *dec = tta;
+    int value, res;
+    int cur_pos = pcm_buffer_size;
+    int pcm_shift_bits = TTA_OUTPUT_DEPTH - ttainfo->BPS;
+    int pr_bits = (ttainfo->BSIZE == 1)? 4 : 5;
+    int cache = 0;  /* decoder cache */
+    fltst *fst;
+    adapt *rice;
+    for (res = 0; --cur_pos >= 0;) {
+        fst  = &dec->fst;
+        rice = &dec->rice;
+        if (data_cur == framelen) {
+            if (data_pos == fframes) break;
+            if (framelen && done_buffer_read()) {
+                if (set_position(data_pos, TTA_SEEK_TIME) < 0) return -1;
+                if (res) break;
+            }
+            if (data_pos == fframes - 1 && lastlen)
+                framelen = lastlen;
+            else framelen = ttainfo->FRAMELEN;
+            decoder_init(tta, ttainfo->NCH, ttainfo->BSIZE);
+            data_pos++; data_cur = 0;
+        }
+        /* decode Rice unsigned */
+        GET_UNARY(unary);
+        switch (unary) {
+        case 0: depth = 0; k = rice->k0; break;
+        default:
+            depth = 1; k = rice->k1;
+            unary--;
+        }
+        if (k) {
+            GET_BINARY(binary, k);
+            value = (unary << k) + binary;
+        } else value = unary;
+        value = update_rice(value, rice, depth, shift_16);
+        /* Rockbox specific: the following logic move to update_rice() */
+#if 0
+        if (depth > 0)
+        {
+            rice->sum1 += value - (rice->sum1 >> 4);
+            if (rice->k1 > 0 && rice->sum1 < shift_16[rice->k1])
+                rice->k1--;
+            else if (rice->sum1 > shift_16[rice->k1 + 1])
+                rice->k1++;
+            value += bit_shift[rice->k0];
+        }
+        rice->sum0 += value - (rice->sum0 >> 4);
+        if (rice->k0 > 0 && rice->sum0 < shift_16[rice->k0])
+            rice->k0--;
+        else if (rice->sum0 > shift_16[rice->k0 + 1])
+            rice->k0++;
+        value = DEC(value);
+#endif
+        /* decompress stage 1: adaptive hybrid filter */
+        hybrid_filter(fst, &value);
+        /* decompress stage 2: fixed order 1 prediction */
+        value += PREDICTOR1(dec->last, pr_bits);
+        dec->last = value;
+        /* check for errors */
+        if (abs(value) > maxvalue) {
+            unsigned int tail =
+                pcm_buffer_size / (ttainfo->BSIZE * ttainfo->NCH) - res;
+            ci->memset(buffer, 0, pcm_buffer_size * sizeof(int32_t));
+            data_cur += tail; res += tail;
+            break;
+        }
+        /* Rockbox speciffic: Rockbox supports max 2channels */
+        if (ttainfo->NCH == 1)
+        {
+            *p++ = value << pcm_shift_bits;
+            data_cur++;
+            res++;
+        }
+        else
+        {
+            if (dec == tta)
+            {
+                cache = value;
+                dec++;
+            }
+            else
+            {
+                value += cache / 2;
+                cache = value - cache;
+                dec = tta;
+                *p++ = cache << pcm_shift_bits;
+                *p++ = value << pcm_shift_bits;
+                data_cur++;
+                res++;
+            }
+        }
+    }
+    return res;
+}
+/* Rockbox speciffic: id3 tags functions delete. */
+/* eof */
diff --git a/apps/codecs/libtta/ttadec.h b/apps/codecs/libtta/ttadec.h
new file mode 100644
index 0000000000..43affd952b
--- /dev/null
+++ b/apps/codecs/libtta/ttadec.h
@@ -0,0 +1,203 @@
+/*
+ * ttadec.h
+ *
+ * Description:  TTAv1 decoder definitions and prototypes
+ * Developed by: Alexander Djourik <ald@true-audio.com>
+ *               Pavel Zhilin <pzh@true-audio.com>
+ *
+ * Copyright (c) 2004 True Audio Software. All rights reserved.
+ *
+ */
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the True Audio Software nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef TTADEC_H_
+#define TTADEC_H_
+#define __ATTRIBUTE_PACKED__    __attribute__((packed))
+#define TTA1_SIGN    0x31415454
+#define MAX_ORDER    8
+#ifndef WAVE_FORMAT_PCM
+#define WAVE_FORMAT_PCM    1
+#endif
+typedef unsigned long long uint64;
+static const unsigned int crc32_table[256] ICONST_ATTR = {
+    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
+    0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
+    0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+    0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
+    0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+    0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
+    0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
+    0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+    0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+    0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
+    0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+    0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
+    0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
+    0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
+    0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
+    0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+    0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
+    0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+    0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+    0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
+    0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
+    0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+    0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+    0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
+    0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+    0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
+    0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
+    0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
+    0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
+    0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+    0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
+    0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+    0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+    0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
+    0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
+    0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+    0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+    0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
+    0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+    0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
+    0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
+    0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
+    0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
+    0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+    0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
+    0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+    0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+    0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
+    0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
+    0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+    0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+    0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
+    0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+    0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
+    0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
+    0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
+    0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
+    0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+    0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+}; 
+static const unsigned int bit_mask[] ICONST_ATTR = {
+    0x00000000, 0x00000001, 0x00000003, 0x00000007,
+    0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
+    0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
+    0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
+    0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
+    0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
+    0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
+    0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
+    0xffffffff
+};
+static const unsigned int bit_shift[] ICONST_ATTR = {
+    0x00000001, 0x00000002, 0x00000004, 0x00000008,
+    0x00000010, 0x00000020, 0x00000040, 0x00000080,
+    0x00000100, 0x00000200, 0x00000400, 0x00000800,
+    0x00001000, 0x00002000, 0x00004000, 0x00008000,
+    0x00010000, 0x00020000, 0x00040000, 0x00080000,
+    0x00100000, 0x00200000, 0x00400000, 0x00800000,
+    0x01000000, 0x02000000, 0x04000000, 0x08000000,
+    0x10000000, 0x20000000, 0x40000000, 0x80000000,
+    0x80000000, 0x80000000, 0x80000000, 0x80000000,
+    0x80000000, 0x80000000, 0x80000000, 0x80000000
+};
+static const unsigned int *shift_16 = bit_shift + 4;
+typedef unsigned char byte;
+#ifndef ROCKBOX_LITTLE_ENDIAN
+#define    ENDSWAP_INT16(x)    (((((x)>>8)&0xFF)|(((x)&0xFF)<<8)))
+#define    ENDSWAP_INT32(x)    (((((x)>>24)&0xFF)|(((x)>>8)&0xFF00)|(((x)&0xFF00)<<8)|(((x)&0xFF)<<24)))
+#define WRITE_BUFFER(x, bsize, out) { \
+    if (bsize > 2) *out++ = (byte)(*x >> 16)); \
+    if (bsize > 1) *out++ = (byte)(*x >> 8); \
+    *out++ = (byte) *x; }
+#else
+#define    ENDSWAP_INT16(x)    (x)
+#define    ENDSWAP_INT32(x)    (x)
+#define WRITE_BUFFER(x, bsize, out) { \
+    *out++ = (byte) *x; \
+    if (bsize > 1) *out++ = (byte)(*x >> 8); \
+    if (bsize > 2) *out++ = (byte)(*x >> 16); }
+#endif
+#define PREDICTOR1(x, k)  ((int)((((uint64)x << k) - x) >> k))
+#define DEC(x)            (((x)&1)?(((x)+1)>>1):(-(x)>>1))
+typedef struct {
+    unsigned int TTAid;
+    unsigned short AudioFormat;
+    unsigned short NumChannels;
+    unsigned short BitsPerSample;
+    unsigned int SampleRate;
+    unsigned int DataLength;
+    unsigned int CRC32;
+} __ATTRIBUTE_PACKED__ tta_hdr;
+typedef struct {
+    unsigned int k0;
+    unsigned int k1;
+    unsigned int sum0;
+    unsigned int sum1;
+} adapt;
+typedef struct {
+    int index;  /* Rockbox speciffic */
+    int error;
+    int round;
+    int shift;
+    int mutex;
+    int qm[MAX_ORDER];
+    int dx[MAX_ORDER * 3]; /* original: dx[MAX_ORDER + 1] */
+    int dl[MAX_ORDER * 3]; /* original: dx[MAX_ORDER + 1] */
+} fltst;
+typedef struct {
+    fltst fst;
+    adapt rice;
+    int last;
+} decoder;
+/* Rockbox speciffic: about id3 tags definitions delete. */
+#endif /* TTADEC_H_ */
diff --git a/apps/codecs/libtta/ttalib.h b/apps/codecs/libtta/ttalib.h
new file mode 100644
index 0000000000..861c119cd4
--- /dev/null
+++ b/apps/codecs/libtta/ttalib.h
@@ -0,0 +1,157 @@
+/*
+ * ttalib.h
+ *
+ * Description:  TTAv1 player library prototypes
+ * Developed by: Alexander Djourik <ald@true-audio.com>
+ *               Pavel Zhilin <pzh@true-audio.com>
+ *
+ * Copyright (c) 2004 True Audio Software. All rights reserved.
+ *
+ */
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the True Audio Software nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef TTALIB_H_
+#define TTALIB_H_
+#define MAX_BPS         24   /* Max supported Bit resolution */
+#define MAX_NCH         2    /* Max supported number of channels (Rockbox changes: 8 -> 2) */
+#ifndef MAXLINE
+#define MAX_LINE        1024
+#endif
+/* decoded pcm sample depth (sample 28bit + sign 1bit) */
+#define TTA_OUTPUT_DEPTH 29
+/* return codes */
+#define NO_ERROR        0    /* No errors found               */
+#define OPEN_ERROR      1    /* Can't open file               */
+#define FORMAT_ERROR    2    /* Unknown TTA format version    */
+#define PLAYER_ERROR    3    /* Not supported file format     */
+#define FILE_ERROR      4    /* File is corrupted             */
+#define READ_ERROR      5    /* Can't read from file          */
+#define MEMORY_ERROR    6    /* Insufficient memory available */
+/* Rockbox speciffic: does not use FRAME_TIME */
+/* #define FRAME_TIME           1.04489795918367346939 */
+#define MULTIPLY_FRAME_TIME(x)  (256 * (x) / 245) /* = FRAME_TIME * x */
+#define SEEK_STEP               (int)MULTIPLY_FRAME_TIME(1000) /* (FRAME_TIME * 1000) */
+#define ISO_BUFFER_LENGTH       (1024*32)
+#define ISO_NBUFFERS            (8)
+#define ISO_BUFFERS_SIZE        (4096) /* (ISO_BUFFER_LENGTH*ISO_NBUFFERS) */
+#define PCM_BUFFER_LENGTH       (4608)
+#define MAX_SEEK_TABLE_SIZE     (4096)
+typedef struct {
+    /* FILE        *HANDLE;     // file handle       (Rockbox does not use)   */
+    unsigned int   FILESIZE;    /* compressed size                            */
+    unsigned short NCH;         /* number of channels                         */
+    unsigned short BPS;         /* bits per sample                            */
+    unsigned short BSIZE;       /* byte size                                  */
+    unsigned short FORMAT;      /* audio format                               */
+    unsigned int   SAMPLERATE;  /* samplerate (sps)                           */
+    unsigned int   DATALENGTH;  /* data length in samples                     */
+    unsigned int   FRAMELEN;    /* frame length                               */
+    unsigned int   LENGTH;      /* playback time (sec)                        */
+    unsigned int   STATE;       /* return code                                */
+    unsigned int   DATAPOS;     /* size of ID3v2 header                       */
+    unsigned int   BITRATE;     /* average bitrate (kbps)                     */
+    /* double      COMPRESS;    // compression ratio (Rockbox does not use)   */
+    /* id3_info    ID3;         // ID3 information   (Rockbox does not use)   */
+} tta_info;
+enum tta_seek_type
+{
+   TTA_SEEK_TIME,
+   TTA_SEEK_POS,
+};
+/*********************** Library functions *************************/
+/* Rockbox speciffic: open_tta_file() does not use */
+/* Rockbox speciffic: It is used in place of open_tta_file(). */
+int set_tta_info(              // FUNCTION: set tta file info structure
+        tta_info *info);       // file info structure
+/*
+ * RETURN VALUE
+ * This function returns 0 if success. Otherwise, -1 is returned
+ * and the variable STATE of the currently using info structure
+ * is set to indicate the error.
+ *
+ */
+/* Rockbox speciffic: close_tta_file() does not use */
+/* Rockbox speciffic: set_position() change arguments and return value. */
+/*
+ * FUNCTION: sets playback position
+ * pos: seek position
+ *           seek_time_ms / SEEK_STEP (when type is TTA_SEEK_TIME)
+ *           file position            (when type is TTA_SEEK_POS)
+ */
+int set_position (
+        unsigned int pos,
+        enum tta_seek_type type);
+/*
+ * RETURN VALUE
+ * This function returns the seeked data position (>= 0) if success. Otherwise, -1 is returned
+ * and the variable STATE of the currently using info structure
+ * is set to indicate the error.
+ *
+ */
+int    player_init (        // FUNCTION: initializes TTA player
+           tta_info *info); // file info structure
+/*
+ * RETURN VALUE
+ * This function returns 0 if success. Otherwise, -1 is returned
+ * and the variable STATE of the currently using info structure
+ * is set to indicate the error.
+ *
+ */
+void    player_stop (void);     // FUNCTION: destroys memory pools
+/* Rockbox speciffic: unsigned char -> int32_t */
+int    get_samples (            // FUNCTION: decode PCM_BUFFER_LENGTH samples
+           int32_t  *buffer);   // into the current PCM buffer position
+/*
+ * RETURN VALUE
+ * This function returns the number of samples successfully decoded.
+ * Otherwise, -1 is returned and the variable STATE of the currently
+ * using info structure is set to indicate the error.
+ *
+ */
+const char *get_error_str (int error); // FUNCTION: get error description
+#endif /* TTALIB_H_ */
diff --git a/apps/codecs/tta.c b/apps/codecs/tta.c
new file mode 100644
index 0000000000..541dc2b7ef
--- /dev/null
+++ b/apps/codecs/tta.c
@@ -0,0 +1,132 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Yoshihisa Uchida
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "codeclib.h"
+#include "codecs/libtta/ttalib.h"
+CODEC_HEADER
+/*
+ * TTA (True Audio) codec:
+ *
+ * References
+ * [1] TRUE AUDIO CODEC SOFTWARE http://true-audio.com/
+ */
+static int32_t samples[PCM_BUFFER_LENGTH * 2] IBSS_ATTR;
+/* this is the codec entry point */
+enum codec_status codec_main(void)
+{
+    tta_info info;
+    int status = CODEC_OK;
+    unsigned int decodedsamples = 0;
+    int endofstream;
+    int new_pos = 0;
+    int sample_count;
+    /* Generic codec initialisation */
+    ci->configure(DSP_SET_SAMPLE_DEPTH, TTA_OUTPUT_DEPTH - 1);
+  
+    if (codec_init())
+    {
+        DEBUGF("codec_init() error\n");
+        status = CODEC_ERROR;
+        goto exit;
+    }
+next_track:
+    while (!*ci->taginfo_ready && !ci->stop_codec)
+        ci->sleep(1);
+    if (set_tta_info(&info) < 0)
+    {
+        status = CODEC_ERROR;
+        goto exit;
+    }
+    if (player_init(&info) < 0)
+    {
+        status = CODEC_ERROR;
+        goto exit;
+    }
+    codec_set_replaygain(ci->id3);
+    ci->configure(DSP_SWITCH_FREQUENCY, ci->id3->frequency);
+    if (info.NCH == 2) {
+        ci->configure(DSP_SET_STEREO_MODE, STEREO_INTERLEAVED);
+    } else if (info.NCH == 1) {
+        ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
+    } else {
+        DEBUGF("CODEC_ERROR: more than 2 channels\n");
+        status = CODEC_ERROR;
+        goto done;
+    }
+    /* The main decoder loop */
+    endofstream = 0;
+    if (ci->id3->offset > 0)
+    {
+        /* Need to save offset for later use (cleared indirectly by advance_buffer) */
+        new_pos = set_position(ci->id3->offset, TTA_SEEK_POS);
+        if (new_pos >= 0)
+            decodedsamples = new_pos;
+        ci->seek_complete();
+    }
+    while (!endofstream)
+    {
+        ci->yield();
+        if (ci->stop_codec || ci->new_track)
+            break;
+        if (ci->seek_time)
+        {
+            new_pos = set_position(ci->seek_time / SEEK_STEP, TTA_SEEK_TIME);
+            if (new_pos >= 0)
+            {
+                decodedsamples = new_pos;
+                ci->seek_complete();
+            }
+        }
+        sample_count = get_samples(samples);
+        if (sample_count < 0)
+        {
+            status = CODEC_ERROR;
+            break;
+        }
+        ci->pcmbuf_insert(samples, NULL, sample_count);
+        decodedsamples += sample_count;
+        if (decodedsamples >= info.DATALENGTH)
+            endofstream = 1;
+        ci->set_elapsed((uint64_t)info.LENGTH * 1000 * decodedsamples / info.DATALENGTH);
+    }
+    status = CODEC_OK;
+done:
+    player_stop();
+    if (ci->request_next_track())
+        goto next_track;
+exit:
+    return status;
+}
diff --git a/apps/filetypes.c b/apps/filetypes.c
index 6548d46fdb..11b9fa0c0f 100644
--- a/apps/filetypes.c
+++ b/apps/filetypes.c
@@ -105,6 +105,7 @@ static const struct filetype inbuilt_filetypes[] = {
    { "snd", FILE_ATTR_AUDIO, Icon_Audio, VOICE_EXT_MPA },
    { "vox", FILE_ATTR_AUDIO, Icon_Audio, VOICE_EXT_MPA },
    { "w64", FILE_ATTR_AUDIO, Icon_Audio, VOICE_EXT_MPA },
+    { "tta", FILE_ATTR_AUDIO, Icon_Audio, VOICE_EXT_MPA },
 #endif
    { "m3u", FILE_ATTR_M3U, Icon_Playlist, LANG_PLAYLIST },
    { "m3u8",FILE_ATTR_M3U, Icon_Playlist, LANG_PLAYLIST },
diff --git a/apps/metadata.c b/apps/metadata.c
index 97f376035d..076b753958 100644
--- a/apps/metadata.c
+++ b/apps/metadata.c
@@ -179,6 +179,9 @@ const struct afmt_entry audio_formats[AFMT_NUM_CODECS] =
    /* Wave64 */
    [AFMT_WAVE64] =
        AFMT_ENTRY("WAVE64",  "wav64",   NULL,          "w64\0"      ),
+    /* True Audio */
+    [AFMT_TTA] =
+        AFMT_ENTRY("TTA",  "tta",   NULL,          "tta\0"      ),
 #endif
 };
@@ -494,6 +497,14 @@ bool get_metadata(struct mp3entry* id3, int fd, const char* trackname)
        }
        break;
        
+    case AFMT_TTA:
+        if (!get_tta_metadata(fd, id3))
+        {
+            DEBUGF("get_tta_metadata error\n");
+            return false;
+        }
+        break;
+        
 #endif /* CONFIG_CODEC == SWCODEC */
        
    default:
diff --git a/apps/metadata.h b/apps/metadata.h
index aa59eac2dd..6b15f6dead 100644
--- a/apps/metadata.h
+++ b/apps/metadata.h
@@ -83,6 +83,7 @@ enum
    AFMT_AU,           /* Sun Audio file */
    AFMT_VOX,          /* VOX */
    AFMT_WAVE64,       /* Wave64 */
+    AFMT_TTA,          /* True Audio */
 #endif
    /* add new formats at any index above this line to have a sensible order -
diff --git a/apps/metadata/metadata_parsers.h b/apps/metadata/metadata_parsers.h
index 0e813ccb48..7238b71a30 100644
--- a/apps/metadata/metadata_parsers.h
+++ b/apps/metadata/metadata_parsers.h
@@ -22,6 +22,7 @@
 char* id3_get_num_genre(unsigned int genre_num);
 int getid3v2len(int fd);
 bool setid3v1title(int fd, struct mp3entry *entry);
+void setid3v2title(int fd, struct mp3entry *entry);
 bool get_mp3_metadata(int fd, struct mp3entry* id3, const char *filename);
 bool get_adx_metadata(int fd, struct mp3entry* id3);
@@ -46,3 +47,4 @@ bool get_smaf_metadata(int fd, struct mp3entry* id3);
 bool get_au_metadata(int fd, struct mp3entry* id3);
 bool get_vox_metadata(int fd, struct mp3entry* id3);
 bool get_wave64_metadata(int fd, struct mp3entry* id3);
+bool get_tta_metadata(int fd, struct mp3entry* id3);
diff --git a/apps/metadata/mp3.c b/apps/metadata/mp3.c
index 49d5c7362e..0f786bd52b 100644
--- a/apps/metadata/mp3.c
+++ b/apps/metadata/mp3.c
@@ -640,7 +640,7 @@ bool setid3v1title(int fd, struct mp3entry *entry)
 *
 * Returns: true if a title was found and created, else false
 */
-static void setid3v2title(int fd, struct mp3entry *entry)
+void setid3v2title(int fd, struct mp3entry *entry)
 {
    int minframesize;
    int size;
diff --git a/apps/metadata/tta.c b/apps/metadata/tta.c
new file mode 100644
index 0000000000..1d3d95f118
--- /dev/null
+++ b/apps/metadata/tta.c
@@ -0,0 +1,123 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Yoshihisa Uchida
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <inttypes.h>
+#include "system.h"
+#include "metadata.h"
+#include "metadata_common.h"
+#include "metadata_parsers.h"
+#include "logf.h"
+#define TTA1_SIGN    0x31415454
+#define TTA_HEADER_ID              0
+#define TTA_HEADER_AUDIO_FORMAT    (TTA_HEADER_ID              + sizeof(unsigned int))
+#define TTA_HEADER_NUM_CHANNELS    (TTA_HEADER_AUDIO_FORMAT    + sizeof(unsigned short))
+#define TTA_HEADER_BITS_PER_SAMPLE (TTA_HEADER_NUM_CHANNELS    + sizeof(unsigned short))
+#define TTA_HEADER_SAMPLE_RATE     (TTA_HEADER_BITS_PER_SAMPLE + sizeof(unsigned short))
+#define TTA_HEADER_DATA_LENGTH     (TTA_HEADER_SAMPLE_RATE     + sizeof(unsigned int))
+#define TTA_HEADER_CRC32           (TTA_HEADER_DATA_LENGTH     + sizeof(unsigned int))
+#define TTA_HEADER_SIZE            (TTA_HEADER_CRC32           + sizeof(unsigned int))
+#define TTA_HEADER_GETTER_ID(x)              get_long_le(x)
+#define TTA_HEADER_GETTER_AUDIO_FORMAT(x)    get_short_le(x)
+#define TTA_HEADER_GETTER_NUM_CHANNELS(x)    get_short_le(x)
+#define TTA_HEADER_GETTER_BITS_PER_SAMPLE(x) get_short_le(x)
+#define TTA_HEADER_GETTER_SAMPLE_RATE(x)     get_long_le(x)
+#define TTA_HEADER_GETTER_DATA_LENGTH(x)     get_long_le(x)
+#define TTA_HEADER_GETTER_CRC32(x)           get_long_le(x)
+#define GET_HEADER(x, tag) TTA_HEADER_GETTER_ ## tag((x) + TTA_HEADER_ ## tag)
+static void read_id3_tags(int fd, struct mp3entry* id3)
+{
+    id3->title    = NULL;
+    id3->filesize = filesize(fd);
+    id3->id3v2len = getid3v2len(fd);
+    id3->tracknum = 0;
+    id3->discnum  = 0;
+    id3->vbr      = false;   /* All TTA files are CBR */
+    /* first get id3v2 tags. if no id3v2 tags ware found, get id3v1 tags */
+    if (id3->id3v2len)
+    {
+        setid3v2title(fd, id3);
+        id3->first_frame_offset = id3->id3v2len;
+        return;
+    }
+    setid3v1title(fd, id3);
+}
+bool get_tta_metadata(int fd, struct mp3entry* id3)
+{
+    unsigned char ttahdr[TTA_HEADER_SIZE];
+    unsigned int datasize;
+    unsigned int origsize;
+    int bps;
+    lseek(fd, 0, SEEK_SET);
+    /* read id3 tags */
+    read_id3_tags(fd, id3);
+    lseek(fd, id3->id3v2len, SEEK_SET);
+    /* read TTA header */
+    if (read(fd, ttahdr, TTA_HEADER_SIZE) < 0)
+        return false;
+    /* check for TTA3 signature */
+    if ((GET_HEADER(ttahdr, ID)) != TTA1_SIGN)
+        return false;
+    /* skip check CRC */
+    id3->channels  = (GET_HEADER(ttahdr, NUM_CHANNELS));
+    id3->frequency = (GET_HEADER(ttahdr, SAMPLE_RATE));
+    id3->length    = ((GET_HEADER(ttahdr, DATA_LENGTH)) / id3->frequency) * 1000LL;
+    bps            = (GET_HEADER(ttahdr, BITS_PER_SAMPLE));
+    datasize = id3->filesize - id3->first_frame_offset;
+    origsize = (GET_HEADER(ttahdr, DATA_LENGTH)) * ((bps + 7) / 8) * id3->channels;
+    id3->bitrate = (int) ((uint64_t) datasize * id3->frequency * id3->channels * bps
+                                               / (origsize * 1000LL));
+    /* output header info (for debug) */
+    DEBUGF("TTA header info ----\n");
+    DEBUGF("id:        %x\n",  (unsigned int)(GET_HEADER(ttahdr, ID)));
+    DEBUGF("channels:  %d\n",  id3->channels);
+    DEBUGF("frequency: %ld\n", id3->frequency);
+    DEBUGF("length:    %ld\n", id3->length);
+    DEBUGF("bitrate:   %d\n",  id3->bitrate);
+    DEBUGF("bits per sample: %d\n", bps);
+    DEBUGF("compressed size: %d\n", datasize);
+    DEBUGF("original size:   %d\n", origsize);
+    DEBUGF("id3----\n");
+    DEBUGF("artist:  %s\n",  id3->artist);
+    DEBUGF("title:   %s\n",  id3->title);
+    DEBUGF("genre:   %s\n",  id3->genre_string);
+    return true;
+}
author	Yoshihisa Uchida <uchida@rockbox.org>	2010-05-13 12:40:09 +0000
committer	Yoshihisa Uchida <uchida@rockbox.org>	2010-05-13 12:40:09 +0000
commit	0f5c6d47d4fdd17260b840024880ba6dd3fdf935 (patch)
tree	6d2526a58816aa9f6431a22a8f1a56278a445dfd
parent	889b4a8ce838bd4191c736d01d9665c177e6d390 (diff)
download	rockbox-0f5c6d47d4fdd17260b840024880ba6dd3fdf935.tar.gz rockbox-0f5c6d47d4fdd17260b840024880ba6dd3fdf935.zip