Add SBC helper includes

4 files changed, 236 insertions, 1 deletions

diff --git a/sbc/Makefile.am b/sbc/Makefile.am
index d17a77d0..4492dfa7 100644
--- a/sbc/Makefile.am
+++ b/sbc/Makefile.am
@@ -1,7 +1,7 @@
 
 noinst_LTLIBRARIES = libsbc.la
 
-libsbc_la_SOURCES = sbc.h sbc.c
+libsbc_la_SOURCES = sbc.h sbc.c sbc_math.h sbc_tables.h
 
 noinst_PROGRAMS = sbcinfo sbcdec sbcenc
 
diff --git a/sbc/sbc.c b/sbc/sbc.c
index de479c4f..f14f59a9 100644
--- a/sbc/sbc.c
+++ b/sbc/sbc.c
@@ -25,4 +25,9 @@
 #include <config.h>
 #endif
 
+#include <stdint.h>
+
+#include "sbc_math.h"
+#include "sbc_tables.h"
+
 #include "sbc.h"
diff --git a/sbc/sbc_math.h b/sbc/sbc_math.h
new file mode 100644
index 00000000..c427bee3
--- /dev/null
+++ b/sbc/sbc_math.h
@@ -0,0 +1,65 @@
+/*
+ *
+ *  Bluetooth low-complexity, subband codec (SBC) library
+ *
+ *  Copyright (C) 2004-2007  Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ *  This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#define fabs(x) ((x) < 0 ? -(x) : (x))
+
+/* C does not provide an explicit arithmetic shift right but this will
+   always be correct and every compiler *should* generate optimal code */
+#define ASR(val, bits) ((-2 >> 1 == -1) ? \
+		((int32_t) (val)) >> (bits) : ((int32_t) (val)) / (1 << (bits)))
+
+#define SCALE_PROTO4_TBL	15
+#define SCALE_ANA4_TBL		16
+#define SCALE_PROTO8_TBL	15
+#define SCALE_ANA8_TBL		16
+#define SCALE_SPROTO4_TBL	16
+#define SCALE_SPROTO8_TBL	16
+#define SCALE_NPROTO4_TBL	10
+#define SCALE_NPROTO8_TBL	12
+#define SCALE_SAMPLES		14
+#define SCALE4_STAGE1_BITS	16
+#define SCALE4_STAGE2_BITS	18
+#define SCALE4_STAGED1_BITS	15
+#define SCALE4_STAGED2_BITS	15
+#define SCALE8_STAGE1_BITS	16
+#define SCALE8_STAGE2_BITS	18
+#define SCALE8_STAGED1_BITS	15
+#define SCALE8_STAGED2_BITS	15
+
+typedef int32_t sbc_fixed_t;
+
+#define SCALE4_STAGE1(src)  ASR(src, SCALE4_STAGE1_BITS)
+#define SCALE4_STAGE2(src)  ASR(src, SCALE4_STAGE2_BITS)
+#define SCALE4_STAGED1(src) ASR(src, SCALE4_STAGED1_BITS)
+#define SCALE4_STAGED2(src) ASR(src, SCALE4_STAGED2_BITS)
+#define SCALE8_STAGE1(src)  ASR(src, SCALE8_STAGE1_BITS)
+#define SCALE8_STAGE2(src)  ASR(src, SCALE8_STAGE2_BITS)
+#define SCALE8_STAGED1(src) ASR(src, SCALE8_STAGED1_BITS)
+#define SCALE8_STAGED2(src) ASR(src, SCALE8_STAGED2_BITS)
+
+#define SBC_FIXED_0(val) { val = 0; }
+#define ADD(dst, src)    { dst += src; }
+#define SUB(dst, src)    { dst -= src; }
+#define MUL(dst, a, b)   { dst = (sbc_fixed_t) a * b; }
+#define MULA(dst, a, b)  { dst += (sbc_fixed_t) a * b; }
+#define DIV2(dst, src)   { dst = ASR(src, 1); }
diff --git a/sbc/sbc_tables.h b/sbc/sbc_tables.h
new file mode 100644
index 00000000..a170704d
--- /dev/null
+++ b/sbc/sbc_tables.h
@@ -0,0 +1,165 @@
+/*
+ *
+ *  Bluetooth low-complexity, subband codec (SBC) library
+ *
+ *  Copyright (C) 2004-2007  Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ *  This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+/* A2DP specification: Appendix B, page 69 */
+static const int sbc_offset4[4][4] = {
+	{ -1, 0, 0, 0 },
+	{ -2, 0, 0, 1 },
+	{ -2, 0, 0, 1 },
+	{ -2, 0, 0, 1 }
+};
+
+/* A2DP specification: Appendix B, page 69 */
+static const int sbc_offset8[4][8] = {
+	{ -2, 0, 0, 0, 0, 0, 0, 1 },
+	{ -3, 0, 0, 0, 0, 0, 1, 2 },
+	{ -4, 0, 0, 0, 0, 0, 1, 2 },
+	{ -4, 0, 0, 0, 0, 0, 1, 2 }
+};
+
+#define SP4(val) ASR(val, SCALE_PROTO4_TBL)
+#define SA4(val) ASR(val, SCALE_ANA4_TBL)
+#define SP8(val) ASR(val, SCALE_PROTO8_TBL)
+#define SA8(val) ASR(val, SCALE_ANA8_TBL)
+#define SS4(val) ASR(val, SCALE_SPROTO4_TBL)
+#define SS8(val) ASR(val, SCALE_SPROTO8_TBL)
+#define SN4(val) ASR(val, SCALE_NPROTO4_TBL)
+#define SN8(val) ASR(val, SCALE_NPROTO8_TBL)
+
+static const int32_t _sbc_proto_4[20] = {
+	SP4(0x02cb3e8c), SP4(0x22b63dc0), SP4(0x002329cc), SP4(0x053b7548),
+	SP4(0x31eab940), SP4(0xec1f5e60), SP4(0xff3773a8), SP4(0x0061c5a7),
+	SP4(0x07646680), SP4(0x3f239480), SP4(0xf89f23a8), SP4(0x007a4737),
+	SP4(0x00b32807), SP4(0x083ddc80), SP4(0x4825e480), SP4(0x0191e578),
+	SP4(0x00ff11ca), SP4(0x00fb7991), SP4(0x069fdc58), SP4(0x4b584000)
+};
+
+static const int32_t _anamatrix4[4] = {
+	SA4(0x2d413cc0), SA4(0x3b20d780), SA4(0x40000000), SA4(0x187de2a0)
+};
+
+static const int32_t _sbc_proto_8[40] = {
+	SP8(0x02e5cd20), SP8(0x22d0c200), SP8(0x006bfe27), SP8(0x07808930),
+	SP8(0x3f1c8800), SP8(0xf8810d70), SP8(0x002cfdc6), SP8(0x055acf28),
+	SP8(0x31f566c0), SP8(0xebfe57e0), SP8(0xff27c437), SP8(0x001485cc),
+	SP8(0x041c6e58), SP8(0x2a7cfa80), SP8(0xe4c4a240), SP8(0xfe359e4c),
+	SP8(0x0048b1f8), SP8(0x0686ce30), SP8(0x38eec5c0), SP8(0xf2a1b9f0),
+	SP8(0xffe8904a), SP8(0x0095698a), SP8(0x0824a480), SP8(0x443b3c00),
+	SP8(0xfd7badc8), SP8(0x00d3e2d9), SP8(0x00c183d2), SP8(0x084e1950),
+	SP8(0x4810d800), SP8(0x017f43fe), SP8(0x01056dd8), SP8(0x00e9cb9f),
+	SP8(0x07d7d090), SP8(0x4a708980), SP8(0x0488fae8), SP8(0x0113bd20),
+	SP8(0x0107b1a8), SP8(0x069fb3c0), SP8(0x4b3db200), SP8(0x00763f48)
+};
+
+static const int32_t sbc_proto_4_40m0[] = {
+	SS4(0x00000000), SS4(0xffa6982f), SS4(0xfba93848), SS4(0x0456c7b8),
+	SS4(0x005967d1), SS4(0xfffb9ac7), SS4(0xff589157), SS4(0xf9c2a8d8),
+	SS4(0x027c1434), SS4(0x0019118b), SS4(0xfff3c74c), SS4(0xff137330),
+	SS4(0xf81b8d70), SS4(0x00ec1b8b), SS4(0xfff0b71a), SS4(0xffe99b00),
+	SS4(0xfef84470), SS4(0xf6fb4370), SS4(0xffcdc351), SS4(0xffe01dc7)
+};
+
+static const int32_t sbc_proto_4_40m1[] = {
+	SS4(0xffe090ce), SS4(0xff2c0475), SS4(0xf694f800), SS4(0xff2c0475),
+	SS4(0xffe090ce), SS4(0xffe01dc7), SS4(0xffcdc351), SS4(0xf6fb4370),
+	SS4(0xfef84470), SS4(0xffe99b00), SS4(0xfff0b71a), SS4(0x00ec1b8b),
+	SS4(0xf81b8d70), SS4(0xff137330), SS4(0xfff3c74c), SS4(0x0019118b),
+	SS4(0x027c1434), SS4(0xf9c2a8d8), SS4(0xff589157), SS4(0xfffb9ac7)
+};
+
+static const int32_t sbc_proto_8_80m0[] = {
+	SS8(0x00000000), SS8(0xfe8d1970), SS8(0xee979f00), SS8(0x11686100),
+	SS8(0x0172e690), SS8(0xfff5bd1a), SS8(0xfdf1c8d4), SS8(0xeac182c0),
+	SS8(0x0d9daee0), SS8(0x00e530da), SS8(0xffe9811d), SS8(0xfd52986c),
+	SS8(0xe7054ca0), SS8(0x0a00d410), SS8(0x006c1de4), SS8(0xffdba705),
+	SS8(0xfcbc98e8), SS8(0xe3889d20), SS8(0x06af2308), SS8(0x000bb7db),
+	SS8(0xffca00ed), SS8(0xfc3fbb68), SS8(0xe071bc00), SS8(0x03bf7948),
+	SS8(0xffc4e05c), SS8(0xffb54b3b), SS8(0xfbedadc0), SS8(0xdde26200),
+	SS8(0x0142291c), SS8(0xff960e94), SS8(0xff9f3e17), SS8(0xfbd8f358),
+	SS8(0xdbf79400), SS8(0xff405e01), SS8(0xff7d4914), SS8(0xff8b1a31),
+	SS8(0xfc1417b8), SS8(0xdac7bb40), SS8(0xfdbb828c), SS8(0xff762170)
+};
+
+static const int32_t sbc_proto_8_80m1[] = {
+	SS8(0xff7c272c), SS8(0xfcb02620), SS8(0xda612700), SS8(0xfcb02620),
+	SS8(0xff7c272c), SS8(0xff762170), SS8(0xfdbb828c), SS8(0xdac7bb40),
+	SS8(0xfc1417b8), SS8(0xff8b1a31), SS8(0xff7d4914), SS8(0xff405e01),
+	SS8(0xdbf79400), SS8(0xfbd8f358), SS8(0xff9f3e17), SS8(0xff960e94),
+	SS8(0x0142291c), SS8(0xdde26200), SS8(0xfbedadc0), SS8(0xffb54b3b),
+	SS8(0xffc4e05c), SS8(0x03bf7948), SS8(0xe071bc00), SS8(0xfc3fbb68),
+	SS8(0xffca00ed), SS8(0x000bb7db), SS8(0x06af2308), SS8(0xe3889d20),
+	SS8(0xfcbc98e8), SS8(0xffdba705), SS8(0x006c1de4), SS8(0x0a00d410),
+	SS8(0xe7054ca0), SS8(0xfd52986c), SS8(0xffe9811d), SS8(0x00e530da),
+	SS8(0x0d9daee0), SS8(0xeac182c0), SS8(0xfdf1c8d4), SS8(0xfff5bd1a)
+};
+
+static const int32_t _anamatrix8[8] = {
+	SA8(0x3b20d780), SA8(0x187de2a0), SA8(0x3ec52f80), SA8(0x3536cc40),
+	SA8(0x238e7680), SA8(0x0c7c5c20), SA8(0x2d413cc0), SA8(0x40000000)
+};
+
+static const int32_t synmatrix4[8][4] = {
+	{ SN4(0x05a82798), SN4(0xfa57d868), SN4(0xfa57d868), SN4(0x05a82798) },
+	{ SN4(0x030fbc54), SN4(0xf89be510), SN4(0x07641af0), SN4(0xfcf043ac) },
+	{ SN4(0x00000000), SN4(0x00000000), SN4(0x00000000), SN4(0x00000000) },
+	{ SN4(0xfcf043ac), SN4(0x07641af0), SN4(0xf89be510), SN4(0x030fbc54) },
+	{ SN4(0xfa57d868), SN4(0x05a82798), SN4(0x05a82798), SN4(0xfa57d868) },
+	{ SN4(0xf89be510), SN4(0xfcf043ac), SN4(0x030fbc54), SN4(0x07641af0) },
+	{ SN4(0xf8000000), SN4(0xf8000000), SN4(0xf8000000), SN4(0xf8000000) },
+	{ SN4(0xf89be510), SN4(0xfcf043ac), SN4(0x030fbc54), SN4(0x07641af0) }
+};
+
+static const int32_t synmatrix8[16][8] = {
+	{ SN8(0x05a82798), SN8(0xfa57d868), SN8(0xfa57d868), SN8(0x05a82798),
+	  SN8(0x05a82798), SN8(0xfa57d868), SN8(0xfa57d868), SN8(0x05a82798) },
+	{ SN8(0x0471ced0), SN8(0xf8275a10), SN8(0x018f8b84), SN8(0x06a6d988),
+	  SN8(0xf9592678), SN8(0xfe70747c), SN8(0x07d8a5f0), SN8(0xfb8e3130) },
+	{ SN8(0x030fbc54), SN8(0xf89be510), SN8(0x07641af0), SN8(0xfcf043ac),
+	  SN8(0xfcf043ac), SN8(0x07641af0), SN8(0xf89be510), SN8(0x030fbc54) },
+	{ SN8(0x018f8b84), SN8(0xfb8e3130), SN8(0x06a6d988), SN8(0xf8275a10),
+	  SN8(0x07d8a5f0), SN8(0xf9592678), SN8(0x0471ced0), SN8(0xfe70747c) },
+	{ SN8(0x00000000), SN8(0x00000000), SN8(0x00000000), SN8(0x00000000),
+	  SN8(0x00000000), SN8(0x00000000), SN8(0x00000000), SN8(0x00000000) },
+	{ SN8(0xfe70747c), SN8(0x0471ced0), SN8(0xf9592678), SN8(0x07d8a5f0),
+	  SN8(0xf8275a10), SN8(0x06a6d988), SN8(0xfb8e3130), SN8(0x018f8b84) },
+	{ SN8(0xfcf043ac), SN8(0x07641af0), SN8(0xf89be510), SN8(0x030fbc54),
+	  SN8(0x030fbc54), SN8(0xf89be510), SN8(0x07641af0), SN8(0xfcf043ac) },
+	{ SN8(0xfb8e3130), SN8(0x07d8a5f0), SN8(0xfe70747c), SN8(0xf9592678),
+	  SN8(0x06a6d988), SN8(0x018f8b84), SN8(0xf8275a10), SN8(0x0471ced0) },
+	{ SN8(0xfa57d868), SN8(0x05a82798), SN8(0x05a82798), SN8(0xfa57d868),
+	  SN8(0xfa57d868), SN8(0x05a82798), SN8(0x05a82798), SN8(0xfa57d868) },
+	{ SN8(0xf9592678), SN8(0x018f8b84), SN8(0x07d8a5f0), SN8(0x0471ced0),
+	  SN8(0xfb8e3130), SN8(0xf8275a10), SN8(0xfe70747c), SN8(0x06a6d988) },
+	{ SN8(0xf89be510), SN8(0xfcf043ac), SN8(0x030fbc54), SN8(0x07641af0),
+	  SN8(0x07641af0), SN8(0x030fbc54), SN8(0xfcf043ac), SN8(0xf89be510) },
+	{ SN8(0xf8275a10), SN8(0xf9592678), SN8(0xfb8e3130), SN8(0xfe70747c),
+	  SN8(0x018f8b84), SN8(0x0471ced0), SN8(0x06a6d988), SN8(0x07d8a5f0) },
+	{ SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000),
+	  SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000) },
+	{ SN8(0xf8275a10), SN8(0xf9592678), SN8(0xfb8e3130), SN8(0xfe70747c),
+	  SN8(0x018f8b84), SN8(0x0471ced0), SN8(0x06a6d988), SN8(0x07d8a5f0) },
+	{ SN8(0xf89be510), SN8(0xfcf043ac), SN8(0x030fbc54), SN8(0x07641af0),
+	  SN8(0x07641af0), SN8(0x030fbc54), SN8(0xfcf043ac), SN8(0xf89be510) },
+	{ SN8(0xf9592678), SN8(0x018f8b84), SN8(0x07d8a5f0), SN8(0x0471ced0),
+	  SN8(0xfb8e3130), SN8(0xf8275a10), SN8(0xfe70747c), SN8(0x06a6d988) }
+};