build: move sbc related files to its own directory

This should make it easier to apply patches from BlueZ which also uses
sbc subdir for this files.

1 files changed, 0 insertions, 1252 deletions

diff --git a/src/modules/bluetooth/sbc.c b/src/modules/bluetooth/sbc.c
deleted file mode 100644
index 5157c70f..00000000
--- a/src/modules/bluetooth/sbc.c
+++ /dev/null
@@ -1,1252 +0,0 @@
-/*
- *
- *  Bluetooth low-complexity, subband codec (SBC) library
- *
- *  Copyright (C) 2004-2009  Marcel Holtmann <marcel@holtmann.org>
- *  Copyright (C) 2004-2005  Henryk Ploetz <henryk@ploetzli.ch>
- *  Copyright (C) 2005-2008  Brad Midgley <bmidgley@xmission.com>
- *
- *
- *  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
- *
- */
-
-/* todo items:
-
-  use a log2 table for byte integer scale factors calculation (sum log2 results
-  for high and low bytes) fill bitpool by 16 bits instead of one at a time in
-  bits allocation/bitpool generation port to the dsp
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <limits.h>
-
-#include "sbc_math.h"
-#include "sbc_tables.h"
-
-#include "sbc.h"
-#include "sbc_primitives.h"
-
-#define SBC_SYNCWORD	0x9C
-
-/* This structure contains an unpacked SBC frame.
-   Yes, there is probably quite some unused space herein */
-struct sbc_frame {
-	uint8_t frequency;
-	uint8_t block_mode;
-	uint8_t blocks;
-	enum {
-		MONO		= SBC_MODE_MONO,
-		DUAL_CHANNEL	= SBC_MODE_DUAL_CHANNEL,
-		STEREO		= SBC_MODE_STEREO,
-		JOINT_STEREO	= SBC_MODE_JOINT_STEREO
-	} mode;
-	uint8_t channels;
-	enum {
-		LOUDNESS	= SBC_AM_LOUDNESS,
-		SNR		= SBC_AM_SNR
-	} allocation;
-	uint8_t subband_mode;
-	uint8_t subbands;
-	uint8_t bitpool;
-	uint16_t codesize;
-	uint8_t length;
-
-	/* bit number x set means joint stereo has been used in subband x */
-	uint8_t joint;
-
-	/* only the lower 4 bits of every element are to be used */
-	uint32_t scale_factor[2][8];
-
-	/* raw integer subband samples in the frame */
-	int32_t SBC_ALIGNED sb_sample_f[16][2][8];
-
-	/* modified subband samples */
-	int32_t SBC_ALIGNED sb_sample[16][2][8];
-
-	/* original pcm audio samples */
-	int16_t SBC_ALIGNED pcm_sample[2][16*8];
-};
-
-struct sbc_decoder_state {
-	int subbands;
-	int32_t V[2][170];
-	int offset[2][16];
-};
-
-/*
- * Calculates the CRC-8 of the first len bits in data
- */
-static const uint8_t crc_table[256] = {
-	0x00, 0x1D, 0x3A, 0x27, 0x74, 0x69, 0x4E, 0x53,
-	0xE8, 0xF5, 0xD2, 0xCF, 0x9C, 0x81, 0xA6, 0xBB,
-	0xCD, 0xD0, 0xF7, 0xEA, 0xB9, 0xA4, 0x83, 0x9E,
-	0x25, 0x38, 0x1F, 0x02, 0x51, 0x4C, 0x6B, 0x76,
-	0x87, 0x9A, 0xBD, 0xA0, 0xF3, 0xEE, 0xC9, 0xD4,
-	0x6F, 0x72, 0x55, 0x48, 0x1B, 0x06, 0x21, 0x3C,
-	0x4A, 0x57, 0x70, 0x6D, 0x3E, 0x23, 0x04, 0x19,
-	0xA2, 0xBF, 0x98, 0x85, 0xD6, 0xCB, 0xEC, 0xF1,
-	0x13, 0x0E, 0x29, 0x34, 0x67, 0x7A, 0x5D, 0x40,
-	0xFB, 0xE6, 0xC1, 0xDC, 0x8F, 0x92, 0xB5, 0xA8,
-	0xDE, 0xC3, 0xE4, 0xF9, 0xAA, 0xB7, 0x90, 0x8D,
-	0x36, 0x2B, 0x0C, 0x11, 0x42, 0x5F, 0x78, 0x65,
-	0x94, 0x89, 0xAE, 0xB3, 0xE0, 0xFD, 0xDA, 0xC7,
-	0x7C, 0x61, 0x46, 0x5B, 0x08, 0x15, 0x32, 0x2F,
-	0x59, 0x44, 0x63, 0x7E, 0x2D, 0x30, 0x17, 0x0A,
-	0xB1, 0xAC, 0x8B, 0x96, 0xC5, 0xD8, 0xFF, 0xE2,
-	0x26, 0x3B, 0x1C, 0x01, 0x52, 0x4F, 0x68, 0x75,
-	0xCE, 0xD3, 0xF4, 0xE9, 0xBA, 0xA7, 0x80, 0x9D,
-	0xEB, 0xF6, 0xD1, 0xCC, 0x9F, 0x82, 0xA5, 0xB8,
-	0x03, 0x1E, 0x39, 0x24, 0x77, 0x6A, 0x4D, 0x50,
-	0xA1, 0xBC, 0x9B, 0x86, 0xD5, 0xC8, 0xEF, 0xF2,
-	0x49, 0x54, 0x73, 0x6E, 0x3D, 0x20, 0x07, 0x1A,
-	0x6C, 0x71, 0x56, 0x4B, 0x18, 0x05, 0x22, 0x3F,
-	0x84, 0x99, 0xBE, 0xA3, 0xF0, 0xED, 0xCA, 0xD7,
-	0x35, 0x28, 0x0F, 0x12, 0x41, 0x5C, 0x7B, 0x66,
-	0xDD, 0xC0, 0xE7, 0xFA, 0xA9, 0xB4, 0x93, 0x8E,
-	0xF8, 0xE5, 0xC2, 0xDF, 0x8C, 0x91, 0xB6, 0xAB,
-	0x10, 0x0D, 0x2A, 0x37, 0x64, 0x79, 0x5E, 0x43,
-	0xB2, 0xAF, 0x88, 0x95, 0xC6, 0xDB, 0xFC, 0xE1,
-	0x5A, 0x47, 0x60, 0x7D, 0x2E, 0x33, 0x14, 0x09,
-	0x7F, 0x62, 0x45, 0x58, 0x0B, 0x16, 0x31, 0x2C,
-	0x97, 0x8A, 0xAD, 0xB0, 0xE3, 0xFE, 0xD9, 0xC4
-};
-
-static uint8_t sbc_crc8(const uint8_t *data, size_t len)
-{
-	uint8_t crc = 0x0f;
-	size_t i;
-	uint8_t octet;
-
-	for (i = 0; i < len / 8; i++)
-		crc = crc_table[crc ^ data[i]];
-
-	octet = data[i];
-	for (i = 0; i < len % 8; i++) {
-		char bit = ((octet ^ crc) & 0x80) >> 7;
-
-		crc = ((crc & 0x7f) << 1) ^ (bit ? 0x1d : 0);
-
-		octet = octet << 1;
-	}
-
-	return crc;
-}
-
-/*
- * Code straight from the spec to calculate the bits array
- * Takes a pointer to the frame in question, a pointer to the bits array and
- * the sampling frequency (as 2 bit integer)
- */
-static void sbc_calculate_bits(const struct sbc_frame *frame, int (*bits)[8])
-{
-	uint8_t sf = frame->frequency;
-
-	if (frame->mode == MONO || frame->mode == DUAL_CHANNEL) {
-		int bitneed[2][8], loudness, max_bitneed, bitcount, slicecount, bitslice;
-		int ch, sb;
-
-		for (ch = 0; ch < frame->channels; ch++) {
-			max_bitneed = 0;
-			if (frame->allocation == SNR) {
-				for (sb = 0; sb < frame->subbands; sb++) {
-					bitneed[ch][sb] = frame->scale_factor[ch][sb];
-					if (bitneed[ch][sb] > max_bitneed)
-						max_bitneed = bitneed[ch][sb];
-				}
-			} else {
-				for (sb = 0; sb < frame->subbands; sb++) {
-					if (frame->scale_factor[ch][sb] == 0)
-						bitneed[ch][sb] = -5;
-					else {
-						if (frame->subbands == 4)
-							loudness = frame->scale_factor[ch][sb] - sbc_offset4[sf][sb];
-						else
-							loudness = frame->scale_factor[ch][sb] - sbc_offset8[sf][sb];
-						if (loudness > 0)
-							bitneed[ch][sb] = loudness / 2;
-						else
-							bitneed[ch][sb] = loudness;
-					}
-					if (bitneed[ch][sb] > max_bitneed)
-						max_bitneed = bitneed[ch][sb];
-				}
-			}
-
-			bitcount = 0;
-			slicecount = 0;
-			bitslice = max_bitneed + 1;
-			do {
-				bitslice--;
-				bitcount += slicecount;
-				slicecount = 0;
-				for (sb = 0; sb < frame->subbands; sb++) {
-					if ((bitneed[ch][sb] > bitslice + 1) && (bitneed[ch][sb] < bitslice + 16))
-						slicecount++;
-					else if (bitneed[ch][sb] == bitslice + 1)
-						slicecount += 2;
-				}
-			} while (bitcount + slicecount < frame->bitpool);
-
-			if (bitcount + slicecount == frame->bitpool) {
-				bitcount += slicecount;
-				bitslice--;
-			}
-
-			for (sb = 0; sb < frame->subbands; sb++) {
-				if (bitneed[ch][sb] < bitslice + 2)
-					bits[ch][sb] = 0;
-				else {
-					bits[ch][sb] = bitneed[ch][sb] - bitslice;
-					if (bits[ch][sb] > 16)
-						bits[ch][sb] = 16;
-				}
-			}
-
-			for (sb = 0; bitcount < frame->bitpool && sb < frame->subbands; sb++) {
-				if ((bits[ch][sb] >= 2) && (bits[ch][sb] < 16)) {
-					bits[ch][sb]++;
-					bitcount++;
-				} else if ((bitneed[ch][sb] == bitslice + 1) && (frame->bitpool > bitcount + 1)) {
-					bits[ch][sb] = 2;
-					bitcount += 2;
-				}
-			}
-
-			for (sb = 0; bitcount < frame->bitpool && sb < frame->subbands; sb++) {
-				if (bits[ch][sb] < 16) {
-					bits[ch][sb]++;
-					bitcount++;
-				}
-			}
-
-		}
-
-	} else if (frame->mode == STEREO || frame->mode == JOINT_STEREO) {
-		int bitneed[2][8], loudness, max_bitneed, bitcount, slicecount, bitslice;
-		int ch, sb;
-
-		max_bitneed = 0;
-		if (frame->allocation == SNR) {
-			for (ch = 0; ch < 2; ch++) {
-				for (sb = 0; sb < frame->subbands; sb++) {
-					bitneed[ch][sb] = frame->scale_factor[ch][sb];
-					if (bitneed[ch][sb] > max_bitneed)
-						max_bitneed = bitneed[ch][sb];
-				}
-			}
-		} else {
-			for (ch = 0; ch < 2; ch++) {
-				for (sb = 0; sb < frame->subbands; sb++) {
-					if (frame->scale_factor[ch][sb] == 0)
-						bitneed[ch][sb] = -5;
-					else {
-						if (frame->subbands == 4)
-							loudness = frame->scale_factor[ch][sb] - sbc_offset4[sf][sb];
-						else
-							loudness = frame->scale_factor[ch][sb] - sbc_offset8[sf][sb];
-						if (loudness > 0)
-							bitneed[ch][sb] = loudness / 2;
-						else
-							bitneed[ch][sb] = loudness;
-					}
-					if (bitneed[ch][sb] > max_bitneed)
-						max_bitneed = bitneed[ch][sb];
-				}
-			}
-		}
-
-		bitcount = 0;
-		slicecount = 0;
-		bitslice = max_bitneed + 1;
-		do {
-			bitslice--;
-			bitcount += slicecount;
-			slicecount = 0;
-			for (ch = 0; ch < 2; ch++) {
-				for (sb = 0; sb < frame->subbands; sb++) {
-					if ((bitneed[ch][sb] > bitslice + 1) && (bitneed[ch][sb] < bitslice + 16))
-						slicecount++;
-					else if (bitneed[ch][sb] == bitslice + 1)
-						slicecount += 2;
-				}
-			}
-		} while (bitcount + slicecount < frame->bitpool);
-
-		if (bitcount + slicecount == frame->bitpool) {
-			bitcount += slicecount;
-			bitslice--;
-		}
-
-		for (ch = 0; ch < 2; ch++) {
-			for (sb = 0; sb < frame->subbands; sb++) {
-				if (bitneed[ch][sb] < bitslice + 2) {
-					bits[ch][sb] = 0;
-				} else {
-					bits[ch][sb] = bitneed[ch][sb] - bitslice;
-					if (bits[ch][sb] > 16)
-						bits[ch][sb] = 16;
-				}
-			}
-		}
-
-		ch = 0;
-		sb = 0;
-		while (bitcount < frame->bitpool) {
-			if ((bits[ch][sb] >= 2) && (bits[ch][sb] < 16)) {
-				bits[ch][sb]++;
-				bitcount++;
-			} else if ((bitneed[ch][sb] == bitslice + 1) && (frame->bitpool > bitcount + 1)) {
-				bits[ch][sb] = 2;
-				bitcount += 2;
-			}
-			if (ch == 1) {
-				ch = 0;
-				sb++;
-				if (sb >= frame->subbands) break;
-			} else
-				ch = 1;
-		}
-
-		ch = 0;
-		sb = 0;
-		while (bitcount < frame->bitpool) {
-			if (bits[ch][sb] < 16) {
-				bits[ch][sb]++;
-				bitcount++;
-			}
-			if (ch == 1) {
-				ch = 0;
-				sb++;
-				if (sb >= frame->subbands) break;
-			} else
-				ch = 1;
-		}
-
-	}
-
-}
-
-/*
- * Unpacks a SBC frame at the beginning of the stream in data,
- * which has at most len bytes into frame.
- * Returns the length in bytes of the packed frame, or a negative
- * value on error. The error codes are:
- *
- *  -1   Data stream too short
- *  -2   Sync byte incorrect
- *  -3   CRC8 incorrect
- *  -4   Bitpool value out of bounds
- */
-static int sbc_unpack_frame(const uint8_t *data, struct sbc_frame *frame,
-				size_t len)
-{
-	unsigned int consumed;
-	/* Will copy the parts of the header that are relevant to crc
-	 * calculation here */
-	uint8_t crc_header[11] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
-	int crc_pos = 0;
-	int32_t temp;
-
-	int audio_sample;
-	int ch, sb, blk, bit;	/* channel, subband, block and bit standard
-				   counters */
-	int bits[2][8];		/* bits distribution */
-	uint32_t levels[2][8];	/* levels derived from that */
-
-	if (len < 4)
-		return -1;
-
-	if (data[0] != SBC_SYNCWORD)
-		return -2;
-
-	frame->frequency = (data[1] >> 6) & 0x03;
-
-	frame->block_mode = (data[1] >> 4) & 0x03;
-	switch (frame->block_mode) {
-	case SBC_BLK_4:
-		frame->blocks = 4;
-		break;
-	case SBC_BLK_8:
-		frame->blocks = 8;
-		break;
-	case SBC_BLK_12:
-		frame->blocks = 12;
-		break;
-	case SBC_BLK_16:
-		frame->blocks = 16;
-		break;
-	}
-
-	frame->mode = (data[1] >> 2) & 0x03;
-	switch (frame->mode) {
-	case MONO:
-		frame->channels = 1;
-		break;
-	case DUAL_CHANNEL:	/* fall-through */
-	case STEREO:
-	case JOINT_STEREO:
-		frame->channels = 2;
-		break;
-	}
-
-	frame->allocation = (data[1] >> 1) & 0x01;
-
-	frame->subband_mode = (data[1] & 0x01);
-	frame->subbands = frame->subband_mode ? 8 : 4;
-
-	frame->bitpool = data[2];
-
-	if ((frame->mode == MONO || frame->mode == DUAL_CHANNEL) &&
-			frame->bitpool > 16 * frame->subbands)
-		return -4;
-
-	if ((frame->mode == STEREO || frame->mode == JOINT_STEREO) &&
-			frame->bitpool > 32 * frame->subbands)
-		return -4;
-
-	/* data[3] is crc, we're checking it later */
-
-	consumed = 32;
-
-	crc_header[0] = data[1];
-	crc_header[1] = data[2];
-	crc_pos = 16;
-
-	if (frame->mode == JOINT_STEREO) {
-		if (len * 8 < consumed + frame->subbands)
-			return -1;
-
-		frame->joint = 0x00;
-		for (sb = 0; sb < frame->subbands - 1; sb++)
-			frame->joint |= ((data[4] >> (7 - sb)) & 0x01) << sb;
-		if (frame->subbands == 4)
-			crc_header[crc_pos / 8] = data[4] & 0xf0;
-		else
-			crc_header[crc_pos / 8] = data[4];
-
-		consumed += frame->subbands;
-		crc_pos += frame->subbands;
-	}
-
-	if (len * 8 < consumed + (4 * frame->subbands * frame->channels))
-		return -1;
-
-	for (ch = 0; ch < frame->channels; ch++) {
-		for (sb = 0; sb < frame->subbands; sb++) {
-			/* FIXME assert(consumed % 4 == 0); */
-			frame->scale_factor[ch][sb] =
-				(data[consumed >> 3] >> (4 - (consumed & 0x7))) & 0x0F;
-			crc_header[crc_pos >> 3] |=
-				frame->scale_factor[ch][sb] << (4 - (crc_pos & 0x7));
-
-			consumed += 4;
-			crc_pos += 4;
-		}
-	}
-
-	if (data[3] != sbc_crc8(crc_header, crc_pos))
-		return -3;
-
-	sbc_calculate_bits(frame, bits);
-
-	for (ch = 0; ch < frame->channels; ch++) {
-		for (sb = 0; sb < frame->subbands; sb++)
-			levels[ch][sb] = (1 << bits[ch][sb]) - 1;
-	}
-
-	for (blk = 0; blk < frame->blocks; blk++) {
-		for (ch = 0; ch < frame->channels; ch++) {
-			for (sb = 0; sb < frame->subbands; sb++) {
-				if (levels[ch][sb] > 0) {
-					audio_sample = 0;
-					for (bit = 0; bit < bits[ch][sb]; bit++) {
-						if (consumed > len * 8)
-							return -1;
-
-						if ((data[consumed >> 3] >> (7 - (consumed & 0x7))) & 0x01)
-							audio_sample |= 1 << (bits[ch][sb] - bit - 1);
-
-						consumed++;
-					}
-
-					frame->sb_sample[blk][ch][sb] =
-						(((audio_sample << 1) | 1) << frame->scale_factor[ch][sb]) /
-						levels[ch][sb] - (1 << frame->scale_factor[ch][sb]);
-				} else
-					frame->sb_sample[blk][ch][sb] = 0;
-			}
-		}
-	}
-
-	if (frame->mode == JOINT_STEREO) {
-		for (blk = 0; blk < frame->blocks; blk++) {
-			for (sb = 0; sb < frame->subbands; sb++) {
-				if (frame->joint & (0x01 << sb)) {
-					temp = frame->sb_sample[blk][0][sb] +
-						frame->sb_sample[blk][1][sb];
-					frame->sb_sample[blk][1][sb] =
-						frame->sb_sample[blk][0][sb] -
-						frame->sb_sample[blk][1][sb];
-					frame->sb_sample[blk][0][sb] = temp;
-				}
-			}
-		}
-	}
-
-	if ((consumed & 0x7) != 0)
-		consumed += 8 - (consumed & 0x7);
-
-	return consumed >> 3;
-}
-
-static void sbc_decoder_init(struct sbc_decoder_state *state,
-				const struct sbc_frame *frame)
-{
-	int i, ch;
-
-	memset(state->V, 0, sizeof(state->V));
-	state->subbands = frame->subbands;
-
-	for (ch = 0; ch < 2; ch++)
-		for (i = 0; i < frame->subbands * 2; i++)
-			state->offset[ch][i] = (10 * i + 10);
-}
-
-static inline void sbc_synthesize_four(struct sbc_decoder_state *state,
-				struct sbc_frame *frame, int ch, int blk)
-{
-	int i, k, idx;
-	int32_t *v = state->V[ch];
-	int *offset = state->offset[ch];
-
-	for (i = 0; i < 8; i++) {
-		/* Shifting */
-		offset[i]--;
-		if (offset[i] < 0) {
-			offset[i] = 79;
-			memcpy(v + 80, v, 9 * sizeof(*v));
-		}
-
-		/* Distribute the new matrix value to the shifted position */
-		v[offset[i]] = SCALE4_STAGED1(
-			MULA(synmatrix4[i][0], frame->sb_sample[blk][ch][0],
-			MULA(synmatrix4[i][1], frame->sb_sample[blk][ch][1],
-			MULA(synmatrix4[i][2], frame->sb_sample[blk][ch][2],
-			MUL (synmatrix4[i][3], frame->sb_sample[blk][ch][3])))));
-	}
-
-	/* Compute the samples */
-	for (idx = 0, i = 0; i < 4; i++, idx += 5) {
-		k = (i + 4) & 0xf;
-
-		/* Store in output, Q0 */
-		frame->pcm_sample[ch][blk * 4 + i] = SCALE4_STAGED1(
-			MULA(v[offset[i] + 0], sbc_proto_4_40m0[idx + 0],
-			MULA(v[offset[k] + 1], sbc_proto_4_40m1[idx + 0],
-			MULA(v[offset[i] + 2], sbc_proto_4_40m0[idx + 1],
-			MULA(v[offset[k] + 3], sbc_proto_4_40m1[idx + 1],
-			MULA(v[offset[i] + 4], sbc_proto_4_40m0[idx + 2],
-			MULA(v[offset[k] + 5], sbc_proto_4_40m1[idx + 2],
-			MULA(v[offset[i] + 6], sbc_proto_4_40m0[idx + 3],
-			MULA(v[offset[k] + 7], sbc_proto_4_40m1[idx + 3],
-			MULA(v[offset[i] + 8], sbc_proto_4_40m0[idx + 4],
-			MUL( v[offset[k] + 9], sbc_proto_4_40m1[idx + 4])))))))))));
-	}
-}
-
-static inline void sbc_synthesize_eight(struct sbc_decoder_state *state,
-				struct sbc_frame *frame, int ch, int blk)
-{
-	int i, j, k, idx;
-	int *offset = state->offset[ch];
-
-	for (i = 0; i < 16; i++) {
-		/* Shifting */
-		offset[i]--;
-		if (offset[i] < 0) {
-			offset[i] = 159;
-			for (j = 0; j < 9; j++)
-				state->V[ch][j + 160] = state->V[ch][j];
-		}
-
-		/* Distribute the new matrix value to the shifted position */
-		state->V[ch][offset[i]] = SCALE8_STAGED1(
-			MULA(synmatrix8[i][0], frame->sb_sample[blk][ch][0],
-			MULA(synmatrix8[i][1], frame->sb_sample[blk][ch][1],
-			MULA(synmatrix8[i][2], frame->sb_sample[blk][ch][2],
-			MULA(synmatrix8[i][3], frame->sb_sample[blk][ch][3],
-			MULA(synmatrix8[i][4], frame->sb_sample[blk][ch][4],
-			MULA(synmatrix8[i][5], frame->sb_sample[blk][ch][5],
-			MULA(synmatrix8[i][6], frame->sb_sample[blk][ch][6],
-			MUL( synmatrix8[i][7], frame->sb_sample[blk][ch][7])))))))));
-	}
-
-	/* Compute the samples */
-	for (idx = 0, i = 0; i < 8; i++, idx += 5) {
-		k = (i + 8) & 0xf;
-
-		/* Store in output */
-		frame->pcm_sample[ch][blk * 8 + i] = SCALE8_STAGED1( // Q0
-			MULA(state->V[ch][offset[i] + 0], sbc_proto_8_80m0[idx + 0],
-			MULA(state->V[ch][offset[k] + 1], sbc_proto_8_80m1[idx + 0],
-			MULA(state->V[ch][offset[i] + 2], sbc_proto_8_80m0[idx + 1],
-			MULA(state->V[ch][offset[k] + 3], sbc_proto_8_80m1[idx + 1],
-			MULA(state->V[ch][offset[i] + 4], sbc_proto_8_80m0[idx + 2],
-			MULA(state->V[ch][offset[k] + 5], sbc_proto_8_80m1[idx + 2],
-			MULA(state->V[ch][offset[i] + 6], sbc_proto_8_80m0[idx + 3],
-			MULA(state->V[ch][offset[k] + 7], sbc_proto_8_80m1[idx + 3],
-			MULA(state->V[ch][offset[i] + 8], sbc_proto_8_80m0[idx + 4],
-			MUL( state->V[ch][offset[k] + 9], sbc_proto_8_80m1[idx + 4])))))))))));
-	}
-}
-
-static int sbc_synthesize_audio(struct sbc_decoder_state *state,
-				struct sbc_frame *frame)
-{
-	int ch, blk;
-
-	switch (frame->subbands) {
-	case 4:
-		for (ch = 0; ch < frame->channels; ch++) {
-			for (blk = 0; blk < frame->blocks; blk++)
-				sbc_synthesize_four(state, frame, ch, blk);
-		}
-		return frame->blocks * 4;
-
-	case 8:
-		for (ch = 0; ch < frame->channels; ch++) {
-			for (blk = 0; blk < frame->blocks; blk++)
-				sbc_synthesize_eight(state, frame, ch, blk);
-		}
-		return frame->blocks * 8;
-
-	default:
-		return -EIO;
-	}
-}
-
-static int sbc_analyze_audio(struct sbc_encoder_state *state,
-				struct sbc_frame *frame)
-{
-	int ch, blk;
-	int16_t *x;
-
-	switch (frame->subbands) {
-	case 4:
-		for (ch = 0; ch < frame->channels; ch++) {
-			x = &state->X[ch][state->position - 16 +
-							frame->blocks * 4];
-			for (blk = 0; blk < frame->blocks; blk += 4) {
-				state->sbc_analyze_4b_4s(
-					x,
-					frame->sb_sample_f[blk][ch],
-					frame->sb_sample_f[blk + 1][ch] -
-					frame->sb_sample_f[blk][ch]);
-				x -= 16;
-			}
-		}
-		return frame->blocks * 4;
-
-	case 8:
-		for (ch = 0; ch < frame->channels; ch++) {
-			x = &state->X[ch][state->position - 32 +
-							frame->blocks * 8];
-			for (blk = 0; blk < frame->blocks; blk += 4) {
-				state->sbc_analyze_4b_8s(
-					x,
-					frame->sb_sample_f[blk][ch],
-					frame->sb_sample_f[blk + 1][ch] -
-					frame->sb_sample_f[blk][ch]);
-				x -= 32;
-			}
-		}
-		return frame->blocks * 8;
-
-	default:
-		return -EIO;
-	}
-}
-
-/* Supplementary bitstream writing macros for 'sbc_pack_frame' */
-
-#define PUT_BITS(data_ptr, bits_cache, bits_count, v, n)		\
-	do {								\
-		bits_cache = (v) | (bits_cache << (n));			\
-		bits_count += (n);					\
-		if (bits_count >= 16) {					\
-			bits_count -= 8;				\
-			*data_ptr++ = (uint8_t)				\
-				(bits_cache >> bits_count);		\
-			bits_count -= 8;				\
-			*data_ptr++ = (uint8_t)				\
-				(bits_cache >> bits_count);		\
-		}							\
-	} while (0)
-
-#define FLUSH_BITS(data_ptr, bits_cache, bits_count)			\
-	do {								\
-		while (bits_count >= 8) {				\
-			bits_count -= 8;				\
-			*data_ptr++ = (uint8_t)				\
-				(bits_cache >> bits_count);		\
-		}							\
-		if (bits_count > 0)					\
-			*data_ptr++ = (uint8_t)				\
-				(bits_cache << (8 - bits_count));	\
-	} while (0)
-
-/*
- * Packs the SBC frame from frame into the memory at data. At most len
- * bytes will be used, should more memory be needed an appropriate
- * error code will be returned. Returns the length of the packed frame
- * on success or a negative value on error.
- *
- * The error codes are:
- * -1 Not enough memory reserved
- * -2 Unsupported sampling rate
- * -3 Unsupported number of blocks
- * -4 Unsupported number of subbands
- * -5 Bitpool value out of bounds
- * -99 not implemented
- */
-
-static SBC_ALWAYS_INLINE int sbc_pack_frame_internal(
-	uint8_t *data, struct sbc_frame *frame, size_t len,
-	int frame_subbands, int frame_channels)
-{
-	/* Bitstream writer starts from the fourth byte */
-	uint8_t *data_ptr = data + 4;
-	uint32_t bits_cache = 0;
-	uint32_t bits_count = 0;
-
-	/* Will copy the header parts for CRC-8 calculation here */
-	uint8_t crc_header[11] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
-	int crc_pos = 0;
-
-	uint32_t audio_sample;
-
-	int ch, sb, blk;	/* channel, subband, block and bit counters */
-	int bits[2][8];		/* bits distribution */
-	uint32_t levels[2][8];	/* levels are derived from that */
-	uint32_t sb_sample_delta[2][8];
-
-	data[0] = SBC_SYNCWORD;
-
-	data[1] = (frame->frequency & 0x03) << 6;
-
-	data[1] |= (frame->block_mode & 0x03) << 4;
-
-	data[1] |= (frame->mode & 0x03) << 2;
-
-	data[1] |= (frame->allocation & 0x01) << 1;
-
-	switch (frame_subbands) {
-	case 4:
-		/* Nothing to do */
-		break;
-	case 8:
-		data[1] |= 0x01;
-		break;
-	default:
-		return -4;
-		break;
-	}
-
-	data[2] = frame->bitpool;
-
-	if ((frame->mode == MONO || frame->mode == DUAL_CHANNEL) &&
-			frame->bitpool > frame_subbands << 4)
-		return -5;
-
-	if ((frame->mode == STEREO || frame->mode == JOINT_STEREO) &&
-			frame->bitpool > frame_subbands << 5)
-		return -5;
-
-	/* Can't fill in crc yet */
-
-	crc_header[0] = data[1];
-	crc_header[1] = data[2];
-	crc_pos = 16;
-
-	if (frame->mode == JOINT_STEREO) {
-		/* like frame->sb_sample but joint stereo */
-		int32_t sb_sample_j[16][2];
-		/* scalefactor and scale_factor in joint case */
-		uint32_t scalefactor_j[2];
-		uint8_t scale_factor_j[2];
-
-		uint8_t joint = 0;
-		frame->joint = 0;
-
-		for (sb = 0; sb < frame_subbands - 1; sb++) {
-			scale_factor_j[0] = 0;
-			scalefactor_j[0] = 2 << SCALE_OUT_BITS;
-			scale_factor_j[1] = 0;
-			scalefactor_j[1] = 2 << SCALE_OUT_BITS;
-
-			for (blk = 0; blk < frame->blocks; blk++) {
-				uint32_t tmp;
-				/* Calculate joint stereo signal */
-				sb_sample_j[blk][0] =
-					ASR(frame->sb_sample_f[blk][0][sb], 1) +
-					ASR(frame->sb_sample_f[blk][1][sb], 1);
-				sb_sample_j[blk][1] =
-					ASR(frame->sb_sample_f[blk][0][sb], 1) -
-					ASR(frame->sb_sample_f[blk][1][sb], 1);
-
-				/* calculate scale_factor_j and scalefactor_j for joint case */
-				tmp = fabs(sb_sample_j[blk][0]);
-				while (scalefactor_j[0] < tmp) {
-					scale_factor_j[0]++;
-					scalefactor_j[0] *= 2;
-				}
-				tmp = fabs(sb_sample_j[blk][1]);
-				while (scalefactor_j[1] < tmp) {
-					scale_factor_j[1]++;
-					scalefactor_j[1] *= 2;
-				}
-			}
-
-			/* decide whether to join this subband */
-			if ((frame->scale_factor[0][sb] +
-					frame->scale_factor[1][sb]) >
-					(scale_factor_j[0] +
-					scale_factor_j[1])) {
-				/* use joint stereo for this subband */
-				joint |= 1 << (frame_subbands - 1 - sb);
-				frame->joint |= 1 << sb;
-				frame->scale_factor[0][sb] = scale_factor_j[0];
-				frame->scale_factor[1][sb] = scale_factor_j[1];
-				for (blk = 0; blk < frame->blocks; blk++) {
-					frame->sb_sample_f[blk][0][sb] =
-							sb_sample_j[blk][0];
-					frame->sb_sample_f[blk][1][sb] =
-							sb_sample_j[blk][1];
-				}
-			}
-		}
-
-		PUT_BITS(data_ptr, bits_cache, bits_count,
-			joint, frame_subbands);
-		crc_header[crc_pos >> 3] = joint;
-		crc_pos += frame_subbands;
-	}
-
-	for (ch = 0; ch < frame_channels; ch++) {
-		for (sb = 0; sb < frame_subbands; sb++) {
-			PUT_BITS(data_ptr, bits_cache, bits_count,
-				frame->scale_factor[ch][sb] & 0x0F, 4);
-			crc_header[crc_pos >> 3] <<= 4;
-			crc_header[crc_pos >> 3] |= frame->scale_factor[ch][sb] & 0x0F;
-			crc_pos += 4;
-		}
-	}
-
-	/* align the last crc byte */
-	if (crc_pos % 8)
-		crc_header[crc_pos >> 3] <<= 8 - (crc_pos % 8);
-
-	data[3] = sbc_crc8(crc_header, crc_pos);
-
-	sbc_calculate_bits(frame, bits);
-
-	for (ch = 0; ch < frame_channels; ch++) {
-		for (sb = 0; sb < frame_subbands; sb++) {
-			levels[ch][sb] = ((1 << bits[ch][sb]) - 1) <<
-				(32 - (frame->scale_factor[ch][sb] +
-					SCALE_OUT_BITS + 2));
-			sb_sample_delta[ch][sb] = (uint32_t) 1 <<
-				(frame->scale_factor[ch][sb] +
-					SCALE_OUT_BITS + 1);
-		}
-	}
-
-	for (blk = 0; blk < frame->blocks; blk++) {
-		for (ch = 0; ch < frame_channels; ch++) {
-			for (sb = 0; sb < frame_subbands; sb++) {
-
-				if (bits[ch][sb] == 0)
-					continue;
-
-				audio_sample = ((uint64_t) levels[ch][sb] *
-					(sb_sample_delta[ch][sb] +
-					frame->sb_sample_f[blk][ch][sb])) >> 32;
-
-				PUT_BITS(data_ptr, bits_cache, bits_count,
-					audio_sample, bits[ch][sb]);
-			}
-		}
-	}
-
-	FLUSH_BITS(data_ptr, bits_cache, bits_count);
-
-	return data_ptr - data;
-}
-
-static int sbc_pack_frame(uint8_t *data, struct sbc_frame *frame, size_t len)
-{
-	if (frame->subbands == 4) {
-		if (frame->channels == 1)
-			return sbc_pack_frame_internal(data, frame, len, 4, 1);
-		else
-			return sbc_pack_frame_internal(data, frame, len, 4, 2);
-	} else {
-		if (frame->channels == 1)
-			return sbc_pack_frame_internal(data, frame, len, 8, 1);
-		else
-			return sbc_pack_frame_internal(data, frame, len, 8, 2);
-	}
-}
-
-static void sbc_encoder_init(struct sbc_encoder_state *state,
-				const struct sbc_frame *frame)
-{
-	memset(&state->X, 0, sizeof(state->X));
-	state->position = SBC_X_BUFFER_SIZE - frame->subbands * 9;
-
-	sbc_init_primitives(state);
-}
-
-struct sbc_priv {
-	int init;
-	struct SBC_ALIGNED sbc_frame frame;
-	struct SBC_ALIGNED sbc_decoder_state dec_state;
-	struct SBC_ALIGNED sbc_encoder_state enc_state;
-};
-
-static void sbc_set_defaults(sbc_t *sbc, unsigned long flags)
-{
-	sbc->frequency = SBC_FREQ_44100;
-	sbc->mode = SBC_MODE_STEREO;
-	sbc->subbands = SBC_SB_8;
-	sbc->blocks = SBC_BLK_16;
-	sbc->bitpool = 32;
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-	sbc->endian = SBC_LE;
-#elif __BYTE_ORDER == __BIG_ENDIAN
-	sbc->endian = SBC_BE;
-#else
-#error "Unknown byte order"
-#endif
-}
-
-int sbc_init(sbc_t *sbc, unsigned long flags)
-{
-	if (!sbc)
-		return -EIO;
-
-	memset(sbc, 0, sizeof(sbc_t));
-
-	sbc->priv_alloc_base = malloc(sizeof(struct sbc_priv) + SBC_ALIGN_MASK);
-	if (!sbc->priv_alloc_base)
-		return -ENOMEM;
-
-	sbc->priv = (void *) (((uintptr_t) sbc->priv_alloc_base +
-			SBC_ALIGN_MASK) & ~((uintptr_t) SBC_ALIGN_MASK));
-
-	memset(sbc->priv, 0, sizeof(struct sbc_priv));
-
-	sbc_set_defaults(sbc, flags);
-
-	return 0;
-}
-
-ssize_t sbc_parse(sbc_t *sbc, const void *input, size_t input_len)
-{
-	return sbc_decode(sbc, input, input_len, NULL, 0, NULL);
-}
-
-ssize_t sbc_decode(sbc_t *sbc, const void *input, size_t input_len,
-			void *output, size_t output_len, size_t *written)
-{
-	struct sbc_priv *priv;
-	char *ptr;
-	int i, ch, framelen, samples;
-
-	if (!sbc || !input)
-		return -EIO;
-
-	priv = sbc->priv;
-
-	framelen = sbc_unpack_frame(input, &priv->frame, input_len);
-
-	if (!priv->init) {
-		sbc_decoder_init(&priv->dec_state, &priv->frame);
-		priv->init = 1;
-
-		sbc->frequency = priv->frame.frequency;
-		sbc->mode = priv->frame.mode;
-		sbc->subbands = priv->frame.subband_mode;
-		sbc->blocks = priv->frame.block_mode;
-		sbc->allocation = priv->frame.allocation;
-		sbc->bitpool = priv->frame.bitpool;
-
-		priv->frame.codesize = sbc_get_codesize(sbc);
-		priv->frame.length = framelen;
-	} else if (priv->frame.bitpool != sbc->bitpool)
-		sbc->bitpool = priv->frame.bitpool;
-
-	if (!output)
-		return framelen;
-
-	if (written)
-		*written = 0;
-
-	if (framelen <= 0)
-		return framelen;
-
-	samples = sbc_synthesize_audio(&priv->dec_state, &priv->frame);
-
-	ptr = output;
-
-	if (output_len < (size_t) (samples * priv->frame.channels * 2))
-		samples = output_len / (priv->frame.channels * 2);
-
-	for (i = 0; i < samples; i++) {
-		for (ch = 0; ch < priv->frame.channels; ch++) {
-			int16_t s;
-			s = priv->frame.pcm_sample[ch][i];
-
-			if (sbc->endian == SBC_BE) {
-				*ptr++ = (s & 0xff00) >> 8;
-				*ptr++ = (s & 0x00ff);
-			} else {
-				*ptr++ = (s & 0x00ff);
-				*ptr++ = (s & 0xff00) >> 8;
-			}
-		}
-	}
-
-	if (written)
-		*written = samples * priv->frame.channels * 2;
-
-	return framelen;
-}
-
-ssize_t sbc_encode(sbc_t *sbc, const void *input, size_t input_len,
-			void *output, size_t output_len, size_t *written)
-{
-	struct sbc_priv *priv;
-	int framelen, samples;
-	int (*sbc_enc_process_input)(int position,
-			const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
-			int nsamples, int nchannels);
-
-	if (!sbc || !input)
-		return -EIO;
-
-	priv = sbc->priv;
-
-	if (written)
-		*written = 0;
-
-	if (!priv->init) {
-		priv->frame.frequency = sbc->frequency;
-		priv->frame.mode = sbc->mode;
-		priv->frame.channels = sbc->mode == SBC_MODE_MONO ? 1 : 2;
-		priv->frame.allocation = sbc->allocation;
-		priv->frame.subband_mode = sbc->subbands;
-		priv->frame.subbands = sbc->subbands ? 8 : 4;
-		priv->frame.block_mode = sbc->blocks;
-		priv->frame.blocks = 4 + (sbc->blocks * 4);
-		priv->frame.bitpool = sbc->bitpool;
-		priv->frame.codesize = sbc_get_codesize(sbc);
-		priv->frame.length = sbc_get_frame_length(sbc);
-
-		sbc_encoder_init(&priv->enc_state, &priv->frame);
-		priv->init = 1;
-	} else if (priv->frame.bitpool != sbc->bitpool) {
-		priv->frame.length = sbc_get_frame_length(sbc);
-		priv->frame.bitpool = sbc->bitpool;
-	}
-
-	/* input must be large enough to encode a complete frame */
-	if (input_len < priv->frame.codesize)
-		return 0;
-
-	/* output must be large enough to receive the encoded frame */
-	if (!output || output_len < priv->frame.length)
-		return -ENOSPC;
-
-	/* Select the needed input data processing function and call it */
-	if (priv->frame.subbands == 8) {
-		if (sbc->endian == SBC_BE)
-			sbc_enc_process_input =
-				priv->enc_state.sbc_enc_process_input_8s_be;
-		else
-			sbc_enc_process_input =
-				priv->enc_state.sbc_enc_process_input_8s_le;
-	} else {
-		if (sbc->endian == SBC_BE)
-			sbc_enc_process_input =
-				priv->enc_state.sbc_enc_process_input_4s_be;
-		else
-			sbc_enc_process_input =
-				priv->enc_state.sbc_enc_process_input_4s_le;
-	}
-
-	priv->enc_state.position = sbc_enc_process_input(
-		priv->enc_state.position, (const uint8_t *) input,
-		priv->enc_state.X, priv->frame.subbands * priv->frame.blocks,
-		priv->frame.channels);
-
-	samples = sbc_analyze_audio(&priv->enc_state, &priv->frame);
-
-	priv->enc_state.sbc_calc_scalefactors(
-		priv->frame.sb_sample_f, priv->frame.scale_factor,
-		priv->frame.blocks, priv->frame.channels, priv->frame.subbands);
-
-	framelen = sbc_pack_frame(output, &priv->frame, output_len);
-
-	if (written)
-		*written = framelen;
-
-	return samples * priv->frame.channels * 2;
-}
-
-void sbc_finish(sbc_t *sbc)
-{
-	if (!sbc)
-		return;
-
-	if (sbc->priv_alloc_base)
-		free(sbc->priv_alloc_base);
-
-	memset(sbc, 0, sizeof(sbc_t));
-}
-
-size_t sbc_get_frame_length(sbc_t *sbc)
-{
-	size_t ret;
-	uint8_t subbands, channels, blocks, joint, bitpool;
-	struct sbc_priv *priv;
-
-	priv = sbc->priv;
-	if (priv->init && priv->frame.bitpool == sbc->bitpool)
-		return priv->frame.length;
-
-	subbands = sbc->subbands ? 8 : 4;
-	blocks = 4 + (sbc->blocks * 4);
-	channels = sbc->mode == SBC_MODE_MONO ? 1 : 2;
-	joint = sbc->mode == SBC_MODE_JOINT_STEREO ? 1 : 0;
-	bitpool = sbc->bitpool;
-
-	ret = 4 + (4 * subbands * channels) / 8;
-	/* This term is not always evenly divide so we round it up */
-	if (channels == 1)
-		ret += ((blocks * channels * bitpool) + 7) / 8;
-	else
-		ret += (((joint ? subbands : 0) + blocks * bitpool) + 7) / 8;
-
-	return ret;
-}
-
-unsigned sbc_get_frame_duration(sbc_t *sbc)
-{
-	uint8_t subbands, blocks;
-	uint16_t frequency;
-	struct sbc_priv *priv;
-
-	priv = sbc->priv;
-	if (!priv->init) {
-		subbands = sbc->subbands ? 8 : 4;
-		blocks = 4 + (sbc->blocks * 4);
-	} else {
-		subbands = priv->frame.subbands;
-		blocks = priv->frame.blocks;
-	}
-
-	switch (sbc->frequency) {
-	case SBC_FREQ_16000:
-		frequency = 16000;
-		break;
-
-	case SBC_FREQ_32000:
-		frequency = 32000;
-		break;
-
-	case SBC_FREQ_44100:
-		frequency = 44100;
-		break;
-
-	case SBC_FREQ_48000:
-		frequency = 48000;
-		break;
-	default:
-		return 0;
-	}
-
-	return (1000000 * blocks * subbands) / frequency;
-}
-
-size_t sbc_get_codesize(sbc_t *sbc)
-{
-	uint16_t subbands, channels, blocks;
-	struct sbc_priv *priv;
-
-	priv = sbc->priv;
-	if (!priv->init) {
-		subbands = sbc->subbands ? 8 : 4;
-		blocks = 4 + (sbc->blocks * 4);
-		channels = sbc->mode == SBC_MODE_MONO ? 1 : 2;
-	} else {
-		subbands = priv->frame.subbands;
-		blocks = priv->frame.blocks;
-		channels = priv->frame.channels;
-	}
-
-	return subbands * blocks * channels * 2;
-}
-
-const char *sbc_get_implementation_info(sbc_t *sbc)
-{
-	struct sbc_priv *priv;
-
-	if (!sbc)
-		return NULL;
-
-	priv = sbc->priv;
-	if (!priv)
-		return NULL;
-
-	return priv->enc_state.implementation_info;
-}
-
-int sbc_reinit(sbc_t *sbc, unsigned long flags)
-{
-	struct sbc_priv *priv;
-
-	if (!sbc || !sbc->priv)
-		return -EIO;
-
-	priv = sbc->priv;
-
-	if (priv->init == 1)
-		memset(sbc->priv, 0, sizeof(struct sbc_priv));
-
-	sbc_set_defaults(sbc, flags);
-
-	return 0;
-}