Merge remote-tracking branch 'vudentz/master'

1 files changed, 79 insertions, 0 deletions

diff --git a/src/modules/bluetooth/sbc/sbc_primitives.h b/src/modules/bluetooth/sbc/sbc_primitives.h
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+++ b/src/modules/bluetooth/sbc/sbc_primitives.h
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+/*
+ *
+ *  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
+ *
+ */
+
+#ifndef __SBC_PRIMITIVES_H
+#define __SBC_PRIMITIVES_H
+
+#define SCALE_OUT_BITS 15
+#define SBC_X_BUFFER_SIZE 328
+
+#ifdef __GNUC__
+#define SBC_ALWAYS_INLINE __attribute__((always_inline))
+#else
+#define SBC_ALWAYS_INLINE inline
+#endif
+
+struct sbc_encoder_state {
+	int position;
+	int16_t SBC_ALIGNED X[2][SBC_X_BUFFER_SIZE];
+	/* Polyphase analysis filter for 4 subbands configuration,
+	 * it handles 4 blocks at once */
+	void (*sbc_analyze_4b_4s)(int16_t *x, int32_t *out, int out_stride);
+	/* Polyphase analysis filter for 8 subbands configuration,
+	 * it handles 4 blocks at once */
+	void (*sbc_analyze_4b_8s)(int16_t *x, int32_t *out, int out_stride);
+	/* Process input data (deinterleave, endian conversion, reordering),
+	 * depending on the number of subbands and input data byte order */
+	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);
+	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);
+	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);
+	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);
+	/* Scale factors calculation */
+	void (*sbc_calc_scalefactors)(int32_t sb_sample_f[16][2][8],
+			uint32_t scale_factor[2][8],
+			int blocks, int channels, int subbands);
+	/* Scale factors calculation with joint stereo support */
+	int (*sbc_calc_scalefactors_j)(int32_t sb_sample_f[16][2][8],
+			uint32_t scale_factor[2][8],
+			int blocks, int subbands);
+	const char *implementation_info;
+};
+
+/*
+ * Initialize pointers to the functions which are the basic "building bricks"
+ * of SBC codec. Best implementation is selected based on target CPU
+ * capabilities.
+ */
+void sbc_init_primitives(struct sbc_encoder_state *encoder_state);
+
+#endif