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, 470 deletions

diff --git a/src/modules/bluetooth/sbc_primitives.c b/src/modules/bluetooth/sbc_primitives.c
deleted file mode 100644
index 6b0be3f5..00000000
--- a/src/modules/bluetooth/sbc_primitives.c
+++ /dev/null
@@ -1,470 +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) 2005-2006  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
- *
- */
-
-#include <stdint.h>
-#include <limits.h>
-#include <string.h>
-#include "sbc.h"
-#include "sbc_math.h"
-#include "sbc_tables.h"
-
-#include "sbc_primitives.h"
-#include "sbc_primitives_mmx.h"
-#include "sbc_primitives_neon.h"
-
-/*
- * A reference C code of analysis filter with SIMD-friendly tables
- * reordering and code layout. This code can be used to develop platform
- * specific SIMD optimizations. Also it may be used as some kind of test
- * for compiler autovectorization capabilities (who knows, if the compiler
- * is very good at this stuff, hand optimized assembly may be not strictly
- * needed for some platform).
- *
- * Note: It is also possible to make a simple variant of analysis filter,
- * which needs only a single constants table without taking care about
- * even/odd cases. This simple variant of filter can be implemented without
- * input data permutation. The only thing that would be lost is the
- * possibility to use pairwise SIMD multiplications. But for some simple
- * CPU cores without SIMD extensions it can be useful. If anybody is
- * interested in implementing such variant of a filter, sourcecode from
- * bluez versions 4.26/4.27 can be used as a reference and the history of
- * the changes in git repository done around that time may be worth checking.
- */
-
-static inline void sbc_analyze_four_simd(const int16_t *in, int32_t *out,
-							const FIXED_T *consts)
-{
-	FIXED_A t1[4];
-	FIXED_T t2[4];
-	int hop = 0;
-
-	/* rounding coefficient */
-	t1[0] = t1[1] = t1[2] = t1[3] =
-		(FIXED_A) 1 << (SBC_PROTO_FIXED4_SCALE - 1);
-
-	/* low pass polyphase filter */
-	for (hop = 0; hop < 40; hop += 8) {
-		t1[0] += (FIXED_A) in[hop] * consts[hop];
-		t1[0] += (FIXED_A) in[hop + 1] * consts[hop + 1];
-		t1[1] += (FIXED_A) in[hop + 2] * consts[hop + 2];
-		t1[1] += (FIXED_A) in[hop + 3] * consts[hop + 3];
-		t1[2] += (FIXED_A) in[hop + 4] * consts[hop + 4];
-		t1[2] += (FIXED_A) in[hop + 5] * consts[hop + 5];
-		t1[3] += (FIXED_A) in[hop + 6] * consts[hop + 6];
-		t1[3] += (FIXED_A) in[hop + 7] * consts[hop + 7];
-	}
-
-	/* scaling */
-	t2[0] = t1[0] >> SBC_PROTO_FIXED4_SCALE;
-	t2[1] = t1[1] >> SBC_PROTO_FIXED4_SCALE;
-	t2[2] = t1[2] >> SBC_PROTO_FIXED4_SCALE;
-	t2[3] = t1[3] >> SBC_PROTO_FIXED4_SCALE;
-
-	/* do the cos transform */
-	t1[0]  = (FIXED_A) t2[0] * consts[40 + 0];
-	t1[0] += (FIXED_A) t2[1] * consts[40 + 1];
-	t1[1]  = (FIXED_A) t2[0] * consts[40 + 2];
-	t1[1] += (FIXED_A) t2[1] * consts[40 + 3];
-	t1[2]  = (FIXED_A) t2[0] * consts[40 + 4];
-	t1[2] += (FIXED_A) t2[1] * consts[40 + 5];
-	t1[3]  = (FIXED_A) t2[0] * consts[40 + 6];
-	t1[3] += (FIXED_A) t2[1] * consts[40 + 7];
-
-	t1[0] += (FIXED_A) t2[2] * consts[40 + 8];
-	t1[0] += (FIXED_A) t2[3] * consts[40 + 9];
-	t1[1] += (FIXED_A) t2[2] * consts[40 + 10];
-	t1[1] += (FIXED_A) t2[3] * consts[40 + 11];
-	t1[2] += (FIXED_A) t2[2] * consts[40 + 12];
-	t1[2] += (FIXED_A) t2[3] * consts[40 + 13];
-	t1[3] += (FIXED_A) t2[2] * consts[40 + 14];
-	t1[3] += (FIXED_A) t2[3] * consts[40 + 15];
-
-	out[0] = t1[0] >>
-		(SBC_COS_TABLE_FIXED4_SCALE - SCALE_OUT_BITS);
-	out[1] = t1[1] >>
-		(SBC_COS_TABLE_FIXED4_SCALE - SCALE_OUT_BITS);
-	out[2] = t1[2] >>
-		(SBC_COS_TABLE_FIXED4_SCALE - SCALE_OUT_BITS);
-	out[3] = t1[3] >>
-		(SBC_COS_TABLE_FIXED4_SCALE - SCALE_OUT_BITS);
-}
-
-static inline void sbc_analyze_eight_simd(const int16_t *in, int32_t *out,
-							const FIXED_T *consts)
-{
-	FIXED_A t1[8];
-	FIXED_T t2[8];
-	int i, hop;
-
-	/* rounding coefficient */
-	t1[0] = t1[1] = t1[2] = t1[3] = t1[4] = t1[5] = t1[6] = t1[7] =
-		(FIXED_A) 1 << (SBC_PROTO_FIXED8_SCALE-1);
-
-	/* low pass polyphase filter */
-	for (hop = 0; hop < 80; hop += 16) {
-		t1[0] += (FIXED_A) in[hop] * consts[hop];
-		t1[0] += (FIXED_A) in[hop + 1] * consts[hop + 1];
-		t1[1] += (FIXED_A) in[hop + 2] * consts[hop + 2];
-		t1[1] += (FIXED_A) in[hop + 3] * consts[hop + 3];
-		t1[2] += (FIXED_A) in[hop + 4] * consts[hop + 4];
-		t1[2] += (FIXED_A) in[hop + 5] * consts[hop + 5];
-		t1[3] += (FIXED_A) in[hop + 6] * consts[hop + 6];
-		t1[3] += (FIXED_A) in[hop + 7] * consts[hop + 7];
-		t1[4] += (FIXED_A) in[hop + 8] * consts[hop + 8];
-		t1[4] += (FIXED_A) in[hop + 9] * consts[hop + 9];
-		t1[5] += (FIXED_A) in[hop + 10] * consts[hop + 10];
-		t1[5] += (FIXED_A) in[hop + 11] * consts[hop + 11];
-		t1[6] += (FIXED_A) in[hop + 12] * consts[hop + 12];
-		t1[6] += (FIXED_A) in[hop + 13] * consts[hop + 13];
-		t1[7] += (FIXED_A) in[hop + 14] * consts[hop + 14];
-		t1[7] += (FIXED_A) in[hop + 15] * consts[hop + 15];
-	}
-
-	/* scaling */
-	t2[0] = t1[0] >> SBC_PROTO_FIXED8_SCALE;
-	t2[1] = t1[1] >> SBC_PROTO_FIXED8_SCALE;
-	t2[2] = t1[2] >> SBC_PROTO_FIXED8_SCALE;
-	t2[3] = t1[3] >> SBC_PROTO_FIXED8_SCALE;
-	t2[4] = t1[4] >> SBC_PROTO_FIXED8_SCALE;
-	t2[5] = t1[5] >> SBC_PROTO_FIXED8_SCALE;
-	t2[6] = t1[6] >> SBC_PROTO_FIXED8_SCALE;
-	t2[7] = t1[7] >> SBC_PROTO_FIXED8_SCALE;
-
-
-	/* do the cos transform */
-	t1[0] = t1[1] = t1[2] = t1[3] = t1[4] = t1[5] = t1[6] = t1[7] = 0;
-
-	for (i = 0; i < 4; i++) {
-		t1[0] += (FIXED_A) t2[i * 2 + 0] * consts[80 + i * 16 + 0];
-		t1[0] += (FIXED_A) t2[i * 2 + 1] * consts[80 + i * 16 + 1];
-		t1[1] += (FIXED_A) t2[i * 2 + 0] * consts[80 + i * 16 + 2];
-		t1[1] += (FIXED_A) t2[i * 2 + 1] * consts[80 + i * 16 + 3];
-		t1[2] += (FIXED_A) t2[i * 2 + 0] * consts[80 + i * 16 + 4];
-		t1[2] += (FIXED_A) t2[i * 2 + 1] * consts[80 + i * 16 + 5];
-		t1[3] += (FIXED_A) t2[i * 2 + 0] * consts[80 + i * 16 + 6];
-		t1[3] += (FIXED_A) t2[i * 2 + 1] * consts[80 + i * 16 + 7];
-		t1[4] += (FIXED_A) t2[i * 2 + 0] * consts[80 + i * 16 + 8];
-		t1[4] += (FIXED_A) t2[i * 2 + 1] * consts[80 + i * 16 + 9];
-		t1[5] += (FIXED_A) t2[i * 2 + 0] * consts[80 + i * 16 + 10];
-		t1[5] += (FIXED_A) t2[i * 2 + 1] * consts[80 + i * 16 + 11];
-		t1[6] += (FIXED_A) t2[i * 2 + 0] * consts[80 + i * 16 + 12];
-		t1[6] += (FIXED_A) t2[i * 2 + 1] * consts[80 + i * 16 + 13];
-		t1[7] += (FIXED_A) t2[i * 2 + 0] * consts[80 + i * 16 + 14];
-		t1[7] += (FIXED_A) t2[i * 2 + 1] * consts[80 + i * 16 + 15];
-	}
-
-	for (i = 0; i < 8; i++)
-		out[i] = t1[i] >>
-			(SBC_COS_TABLE_FIXED8_SCALE - SCALE_OUT_BITS);
-}
-
-static inline void sbc_analyze_4b_4s_simd(int16_t *x,
-						int32_t *out, int out_stride)
-{
-	/* Analyze blocks */
-	sbc_analyze_four_simd(x + 12, out, analysis_consts_fixed4_simd_odd);
-	out += out_stride;
-	sbc_analyze_four_simd(x + 8, out, analysis_consts_fixed4_simd_even);
-	out += out_stride;
-	sbc_analyze_four_simd(x + 4, out, analysis_consts_fixed4_simd_odd);
-	out += out_stride;
-	sbc_analyze_four_simd(x + 0, out, analysis_consts_fixed4_simd_even);
-}
-
-static inline void sbc_analyze_4b_8s_simd(int16_t *x,
-					  int32_t *out, int out_stride)
-{
-	/* Analyze blocks */
-	sbc_analyze_eight_simd(x + 24, out, analysis_consts_fixed8_simd_odd);
-	out += out_stride;
-	sbc_analyze_eight_simd(x + 16, out, analysis_consts_fixed8_simd_even);
-	out += out_stride;
-	sbc_analyze_eight_simd(x + 8, out, analysis_consts_fixed8_simd_odd);
-	out += out_stride;
-	sbc_analyze_eight_simd(x + 0, out, analysis_consts_fixed8_simd_even);
-}
-
-static inline int16_t unaligned16_be(const uint8_t *ptr)
-{
-	return (int16_t) ((ptr[0] << 8) | ptr[1]);
-}
-
-static inline int16_t unaligned16_le(const uint8_t *ptr)
-{
-	return (int16_t) (ptr[0] | (ptr[1] << 8));
-}
-
-/*
- * Internal helper functions for input data processing. In order to get
- * optimal performance, it is important to have "nsamples", "nchannels"
- * and "big_endian" arguments used with this inline function as compile
- * time constants.
- */
-
-static SBC_ALWAYS_INLINE int sbc_encoder_process_input_s4_internal(
-	int position,
-	const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
-	int nsamples, int nchannels, int big_endian)
-{
-	/* handle X buffer wraparound */
-	if (position < nsamples) {
-		if (nchannels > 0)
-			memcpy(&X[0][SBC_X_BUFFER_SIZE - 36], &X[0][position],
-							36 * sizeof(int16_t));
-		if (nchannels > 1)
-			memcpy(&X[1][SBC_X_BUFFER_SIZE - 36], &X[1][position],
-							36 * sizeof(int16_t));
-		position = SBC_X_BUFFER_SIZE - 36;
-	}
-
-	#define PCM(i) (big_endian ? \
-		unaligned16_be(pcm + (i) * 2) : unaligned16_le(pcm + (i) * 2))
-
-	/* copy/permutate audio samples */
-	while ((nsamples -= 8) >= 0) {
-		position -= 8;
-		if (nchannels > 0) {
-			int16_t *x = &X[0][position];
-			x[0]  = PCM(0 + 7 * nchannels);
-			x[1]  = PCM(0 + 3 * nchannels);
-			x[2]  = PCM(0 + 6 * nchannels);
-			x[3]  = PCM(0 + 4 * nchannels);
-			x[4]  = PCM(0 + 0 * nchannels);
-			x[5]  = PCM(0 + 2 * nchannels);
-			x[6]  = PCM(0 + 1 * nchannels);
-			x[7]  = PCM(0 + 5 * nchannels);
-		}
-		if (nchannels > 1) {
-			int16_t *x = &X[1][position];
-			x[0]  = PCM(1 + 7 * nchannels);
-			x[1]  = PCM(1 + 3 * nchannels);
-			x[2]  = PCM(1 + 6 * nchannels);
-			x[3]  = PCM(1 + 4 * nchannels);
-			x[4]  = PCM(1 + 0 * nchannels);
-			x[5]  = PCM(1 + 2 * nchannels);
-			x[6]  = PCM(1 + 1 * nchannels);
-			x[7]  = PCM(1 + 5 * nchannels);
-		}
-		pcm += 16 * nchannels;
-	}
-	#undef PCM
-
-	return position;
-}
-
-static SBC_ALWAYS_INLINE int sbc_encoder_process_input_s8_internal(
-	int position,
-	const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
-	int nsamples, int nchannels, int big_endian)
-{
-	/* handle X buffer wraparound */
-	if (position < nsamples) {
-		if (nchannels > 0)
-			memcpy(&X[0][SBC_X_BUFFER_SIZE - 72], &X[0][position],
-							72 * sizeof(int16_t));
-		if (nchannels > 1)
-			memcpy(&X[1][SBC_X_BUFFER_SIZE - 72], &X[1][position],
-							72 * sizeof(int16_t));
-		position = SBC_X_BUFFER_SIZE - 72;
-	}
-
-	#define PCM(i) (big_endian ? \
-		unaligned16_be(pcm + (i) * 2) : unaligned16_le(pcm + (i) * 2))
-
-	/* copy/permutate audio samples */
-	while ((nsamples -= 16) >= 0) {
-		position -= 16;
-		if (nchannels > 0) {
-			int16_t *x = &X[0][position];
-			x[0]  = PCM(0 + 15 * nchannels);
-			x[1]  = PCM(0 + 7 * nchannels);
-			x[2]  = PCM(0 + 14 * nchannels);
-			x[3]  = PCM(0 + 8 * nchannels);
-			x[4]  = PCM(0 + 13 * nchannels);
-			x[5]  = PCM(0 + 9 * nchannels);
-			x[6]  = PCM(0 + 12 * nchannels);
-			x[7]  = PCM(0 + 10 * nchannels);
-			x[8]  = PCM(0 + 11 * nchannels);
-			x[9]  = PCM(0 + 3 * nchannels);
-			x[10] = PCM(0 + 6 * nchannels);
-			x[11] = PCM(0 + 0 * nchannels);
-			x[12] = PCM(0 + 5 * nchannels);
-			x[13] = PCM(0 + 1 * nchannels);
-			x[14] = PCM(0 + 4 * nchannels);
-			x[15] = PCM(0 + 2 * nchannels);
-		}
-		if (nchannels > 1) {
-			int16_t *x = &X[1][position];
-			x[0]  = PCM(1 + 15 * nchannels);
-			x[1]  = PCM(1 + 7 * nchannels);
-			x[2]  = PCM(1 + 14 * nchannels);
-			x[3]  = PCM(1 + 8 * nchannels);
-			x[4]  = PCM(1 + 13 * nchannels);
-			x[5]  = PCM(1 + 9 * nchannels);
-			x[6]  = PCM(1 + 12 * nchannels);
-			x[7]  = PCM(1 + 10 * nchannels);
-			x[8]  = PCM(1 + 11 * nchannels);
-			x[9]  = PCM(1 + 3 * nchannels);
-			x[10] = PCM(1 + 6 * nchannels);
-			x[11] = PCM(1 + 0 * nchannels);
-			x[12] = PCM(1 + 5 * nchannels);
-			x[13] = PCM(1 + 1 * nchannels);
-			x[14] = PCM(1 + 4 * nchannels);
-			x[15] = PCM(1 + 2 * nchannels);
-		}
-		pcm += 32 * nchannels;
-	}
-	#undef PCM
-
-	return position;
-}
-
-/*
- * Input data processing functions. The data is endian converted if needed,
- * channels are deintrleaved and audio samples are reordered for use in
- * SIMD-friendly analysis filter function. The results are put into "X"
- * array, getting appended to the previous data (or it is better to say
- * prepended, as the buffer is filled from top to bottom). Old data is
- * discarded when neededed, but availability of (10 * nrof_subbands)
- * contiguous samples is always guaranteed for the input to the analysis
- * filter. This is achieved by copying a sufficient part of old data
- * to the top of the buffer on buffer wraparound.
- */
-
-static int sbc_enc_process_input_4s_le(int position,
-		const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
-		int nsamples, int nchannels)
-{
-	if (nchannels > 1)
-		return sbc_encoder_process_input_s4_internal(
-			position, pcm, X, nsamples, 2, 0);
-	else
-		return sbc_encoder_process_input_s4_internal(
-			position, pcm, X, nsamples, 1, 0);
-}
-
-static int sbc_enc_process_input_4s_be(int position,
-		const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
-		int nsamples, int nchannels)
-{
-	if (nchannels > 1)
-		return sbc_encoder_process_input_s4_internal(
-			position, pcm, X, nsamples, 2, 1);
-	else
-		return sbc_encoder_process_input_s4_internal(
-			position, pcm, X, nsamples, 1, 1);
-}
-
-static int sbc_enc_process_input_8s_le(int position,
-		const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
-		int nsamples, int nchannels)
-{
-	if (nchannels > 1)
-		return sbc_encoder_process_input_s8_internal(
-			position, pcm, X, nsamples, 2, 0);
-	else
-		return sbc_encoder_process_input_s8_internal(
-			position, pcm, X, nsamples, 1, 0);
-}
-
-static int sbc_enc_process_input_8s_be(int position,
-		const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
-		int nsamples, int nchannels)
-{
-	if (nchannels > 1)
-		return sbc_encoder_process_input_s8_internal(
-			position, pcm, X, nsamples, 2, 1);
-	else
-		return sbc_encoder_process_input_s8_internal(
-			position, pcm, X, nsamples, 1, 1);
-}
-
-/* Supplementary function to count the number of leading zeros */
-
-static inline int sbc_clz(uint32_t x)
-{
-#ifdef __GNUC__
-	return __builtin_clz(x);
-#else
-	/* TODO: this should be replaced with something better if good
-	 * performance is wanted when using compilers other than gcc */
-	int cnt = 0;
-	while (x) {
-		cnt++;
-		x >>= 1;
-	}
-	return 32 - cnt;
-#endif
-}
-
-static void sbc_calc_scalefactors(
-	int32_t sb_sample_f[16][2][8],
-	uint32_t scale_factor[2][8],
-	int blocks, int channels, int subbands)
-{
-	int ch, sb, blk;
-	for (ch = 0; ch < channels; ch++) {
-		for (sb = 0; sb < subbands; sb++) {
-			uint32_t x = 1 << SCALE_OUT_BITS;
-			for (blk = 0; blk < blocks; blk++) {
-				int32_t tmp = fabs(sb_sample_f[blk][ch][sb]);
-				if (tmp != 0)
-					x |= tmp - 1;
-			}
-			scale_factor[ch][sb] = (31 - SCALE_OUT_BITS) -
-				sbc_clz(x);
-		}
-	}
-}
-
-/*
- * Detect CPU features and setup function pointers
- */
-void sbc_init_primitives(struct sbc_encoder_state *state)
-{
-	/* Default implementation for analyze functions */
-	state->sbc_analyze_4b_4s = sbc_analyze_4b_4s_simd;
-	state->sbc_analyze_4b_8s = sbc_analyze_4b_8s_simd;
-
-	/* Default implementation for input reordering / deinterleaving */
-	state->sbc_enc_process_input_4s_le = sbc_enc_process_input_4s_le;
-	state->sbc_enc_process_input_4s_be = sbc_enc_process_input_4s_be;
-	state->sbc_enc_process_input_8s_le = sbc_enc_process_input_8s_le;
-	state->sbc_enc_process_input_8s_be = sbc_enc_process_input_8s_be;
-
-	/* Default implementation for scale factors calculation */
-	state->sbc_calc_scalefactors = sbc_calc_scalefactors;
-	state->implementation_info = "Generic C";
-
-	/* X86/AMD64 optimizations */
-#ifdef SBC_BUILD_WITH_MMX_SUPPORT
-	sbc_init_primitives_mmx(state);
-#endif
-
-	/* ARM optimizations */
-#ifdef SBC_BUILD_WITH_NEON_SUPPORT
-	sbc_init_primitives_neon(state);
-#endif
-}