korg/bluez
0
0
Fork 0
mirror of https://git.kernel.org/pub/scm/bluetooth/bluez.git synced 2024-11-26 13:44:23 +08:00
Code Issues Packages Projects Releases Wiki Activity
ec233a1f84
bluez/sbc/sbc.c

1385 lines
35 KiB
C
Raw Normal View History

Add skeleton for embedding SBC library
2007-01-31 16:52:52 +08:00
/*
*
* Bluetooth low-complexity, subband codec (SBC) library
*
Update copyright information
2007-08-25 21:23:51 +08:00
* Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
* Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch>
* Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com>
Add skeleton for embedding SBC library
2007-01-31 16:52:52 +08:00
*
*
* 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
*
*/
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
/* todo items:
Coding style cleanup
2007-11-01 23:27:38 +08:00
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
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
*/
Add skeleton for embedding SBC library
2007-01-31 16:52:52 +08:00
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
#include <stdio.h>
#include <errno.h>
Add SBC helper includes
2007-02-21 22:23:25 +08:00
#include <stdint.h>
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
#include <malloc.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
Add SBC helper includes
2007-02-21 22:23:25 +08:00
#include "sbc_math.h"
#include "sbc_tables.h"
Add skeleton for embedding SBC library
2007-01-31 16:52:52 +08:00
#include "sbc.h"
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
#define SBC_SYNCWORD 0x9C
/* sampling frequency */
#define SBC_FS_16 0x00
#define SBC_FS_32 0x01
#define SBC_FS_44 0x02
#define SBC_FS_48 0x03
/* nrof_blocks */
#define SBC_NB_4 0x00
#define SBC_NB_8 0x01
#define SBC_NB_12 0x02
#define SBC_NB_16 0x03
/* channel mode */
#define SBC_CM_MONO 0x00
#define SBC_CM_DUAL_CHANNEL 0x01
#define SBC_CM_STEREO 0x02
#define SBC_CM_JOINT_STEREO 0x03
/* allocation mode */
#define SBC_AM_LOUDNESS 0x00
#define SBC_AM_SNR 0x01
/* subbands */
#define SBC_SB_4 0x00
#define SBC_SB_8 0x01
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* This structure contains an unpacked SBC frame.
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
Yes, there is probably quite some unused space herein */
struct sbc_frame {
uint16_t sampling_frequency; /* in kHz */
uint8_t blocks;
enum {
MONO = SBC_CM_MONO,
DUAL_CHANNEL = SBC_CM_DUAL_CHANNEL,
STEREO = SBC_CM_STEREO,
JOINT_STEREO = SBC_CM_JOINT_STEREO
} channel_mode;
uint8_t channels;
enum {
LOUDNESS = SBC_AM_LOUDNESS,
SNR = SBC_AM_SNR
} allocation_method;
uint8_t subbands;
uint8_t bitpool;
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* bit number x set means joint stereo has been used in subband x */
uint8_t join;
/* only the lower 4 bits of every element are to be used */
uint8_t scale_factor[2][8];
/* raw integer subband samples in the frame */
uint16_t audio_sample[16][2][8];
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
int32_t sb_sample_f[16][2][8];
Coding style cleanup
2007-11-01 23:27:38 +08:00
int32_t sb_sample[16][2][8]; /* modified subband samples */
int16_t pcm_sample[2][16*8]; /* original pcm audio samples */
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
};
struct sbc_decoder_state {
int subbands;
int32_t V[2][170];
int offset[2][16];
};
struct sbc_encoder_state {
int subbands;
int32_t X[2][80];
};
/*
* 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
};
More coding style cleanup
2007-11-02 17:05:57 +08:00
static uint8_t sbc_crc8(const uint8_t *data, size_t len)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
{
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;
}
/*
Coding style cleanup
2007-11-01 23:27:38 +08:00
* 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)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
*/
static void sbc_calculate_bits(const struct sbc_frame *frame, int (*bits)[8], uint8_t sf)
{
if (frame->channel_mode == MONO || frame->channel_mode == DUAL_CHANNEL) {
int bitneed[2][8], loudness, max_bitneed, bitcount, slicecount, bitslice;
int ch, sb;
for (ch = 0; ch < frame->channels; ch++) {
if (frame->allocation_method == SNR) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
for (sb = 0; sb < frame->subbands; sb++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bitneed[ch][sb] = frame->scale_factor[ch][sb];
} else {
for (sb = 0; sb < frame->subbands; sb++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (frame->scale_factor[ch][sb] == 0)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bitneed[ch][sb] = -5;
Coding style cleanup
2007-11-01 23:27:38 +08:00
else {
if (frame->subbands == 4)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
loudness = frame->scale_factor[ch][sb] - sbc_offset4[sf][sb];
Coding style cleanup
2007-11-01 23:27:38 +08:00
else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
loudness = frame->scale_factor[ch][sb] - sbc_offset8[sf][sb];
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (loudness > 0)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bitneed[ch][sb] = loudness / 2;
Coding style cleanup
2007-11-01 23:27:38 +08:00
else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bitneed[ch][sb] = loudness;
}
}
}
max_bitneed = 0;
for (sb = 0; sb < frame->subbands; sb++) {
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++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
if ((bitneed[ch][sb] > bitslice + 1) && (bitneed[ch][sb] < bitslice + 16))
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
slicecount++;
Coding style cleanup
2007-11-01 23:27:38 +08:00
else if (bitneed[ch][sb] == bitslice + 1)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
slicecount += 2;
}
} while (bitcount + slicecount < frame->bitpool);
if (bitcount + slicecount == frame->bitpool) {
bitcount += slicecount;
bitslice--;
}
for (sb = 0; sb < frame->subbands; sb++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (bitneed[ch][sb] < bitslice + 2)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bits[ch][sb] = 0;
Coding style cleanup
2007-11-01 23:27:38 +08:00
else {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bits[ch][sb] = bitneed[ch][sb] - bitslice;
if (bits[ch][sb] > 16)
bits[ch][sb] = 16;
}
}
sb = 0;
while (bitcount < frame->bitpool && sb < frame->subbands) {
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;
}
sb++;
}
sb = 0;
while (bitcount < frame->bitpool && sb < frame->subbands) {
if (bits[ch][sb] < 16) {
bits[ch][sb]++;
bitcount++;
}
sb++;
}
}
} else if (frame->channel_mode == STEREO || frame->channel_mode == JOINT_STEREO) {
int bitneed[2][8], loudness, max_bitneed, bitcount, slicecount, bitslice;
int ch, sb;
if (frame->allocation_method == SNR) {
for (ch = 0; ch < 2; ch++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
for (sb = 0; sb < frame->subbands; sb++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bitneed[ch][sb] = frame->scale_factor[ch][sb];
}
} else {
for (ch = 0; ch < 2; ch++) {
for (sb = 0; sb < frame->subbands; sb++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (frame->scale_factor[ch][sb] == 0)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bitneed[ch][sb] = -5;
Coding style cleanup
2007-11-01 23:27:38 +08:00
else {
if (frame->subbands == 4)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
loudness = frame->scale_factor[ch][sb] - sbc_offset4[sf][sb];
Coding style cleanup
2007-11-01 23:27:38 +08:00
else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
loudness = frame->scale_factor[ch][sb] - sbc_offset8[sf][sb];
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (loudness > 0)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bitneed[ch][sb] = loudness / 2;
Coding style cleanup
2007-11-01 23:27:38 +08:00
else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
bitneed[ch][sb] = loudness;
}
}
}
}
max_bitneed = 0;
for (ch = 0; ch < 2; ch++) {
for (sb = 0; sb < frame->subbands; sb++) {
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++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
if ((bitneed[ch][sb] > bitslice + 1) && (bitneed[ch][sb] < bitslice + 16))
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
slicecount++;
Coding style cleanup
2007-11-01 23:27:38 +08:00
else if (bitneed[ch][sb] == bitslice + 1)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
slicecount += 2;
}
}
} while (bitcount + slicecount < frame->bitpool);
More coding style cleanup
2007-11-02 17:05:57 +08:00
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
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) && (sb < frame->subbands)) {
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++;
Coding style cleanup
2007-11-01 23:27:38 +08:00
} else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
ch = 1;
}
ch = 0;
sb = 0;
while ((bitcount < frame->bitpool) && (sb < frame->subbands)) {
if (bits[ch][sb] < 16) {
bits[ch][sb]++;
bitcount++;
}
if (ch == 1) {
ch = 0;
sb++;
Coding style cleanup
2007-11-01 23:27:38 +08:00
} else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
ch = 1;
}
}
}
Coding style cleanup
2007-11-01 23:27:38 +08:00
/*
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
* 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
*/
More coding style cleanup
2007-11-02 17:05:57 +08:00
static int sbc_unpack_frame(const uint8_t *data, struct sbc_frame *frame,
Coding style cleanup
2007-11-01 23:27:38 +08:00
size_t len)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
{
int consumed;
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* Will copy the parts of the header that are relevant to crc
* calculation here */
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
uint8_t crc_header[11] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
int crc_pos = 0;
int32_t temp;
Coding style cleanup
2007-11-01 23:27:38 +08:00
uint8_t sf; /* sampling_frequency, temporarily needed as
array index */
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
Coding style cleanup
2007-11-01 23:27:38 +08:00
int ch, sb, blk, bit; /* channel, subband, block and bit standard
counters */
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
int bits[2][8]; /* bits distribution */
int levels[2][8]; /* levels derived from that */
if (len < 4)
return -1;
if (data[0] != SBC_SYNCWORD)
return -2;
sf = (data[1] >> 6) & 0x03;
switch (sf) {
case SBC_FS_16:
frame->sampling_frequency = 16000;
break;
case SBC_FS_32:
frame->sampling_frequency = 32000;
break;
case SBC_FS_44:
frame->sampling_frequency = 44100;
break;
case SBC_FS_48:
frame->sampling_frequency = 48000;
break;
}
switch ((data[1] >> 4) & 0x03) {
case SBC_NB_4:
frame->blocks = 4;
break;
case SBC_NB_8:
frame->blocks = 8;
break;
case SBC_NB_12:
frame->blocks = 12;
break;
case SBC_NB_16:
frame->blocks = 16;
break;
}
frame->channel_mode = (data[1] >> 2) & 0x03;
switch (frame->channel_mode) {
case MONO:
frame->channels = 1;
break;
case DUAL_CHANNEL: /* fall-through */
case STEREO:
case JOINT_STEREO:
frame->channels = 2;
break;
}
frame->allocation_method = (data[1] >> 1) & 0x01;
frame->subbands = (data[1] & 0x01) ? 8 : 4;
frame->bitpool = data[2];
More coding style cleanup
2007-11-02 17:05:57 +08:00
if ((frame->channel_mode == MONO || frame->channel_mode == DUAL_CHANNEL) &&
frame->bitpool > 16 * frame->subbands)
return -4;
if ((frame->channel_mode == STEREO || frame->channel_mode == JOINT_STEREO) &&
frame->bitpool > 32 * frame->subbands)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
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->channel_mode == JOINT_STEREO) {
if (len * 8 < consumed + frame->subbands)
return -1;
frame->join = 0x00;
Coding style cleanup
2007-11-01 23:27:38 +08:00
for (sb = 0; sb < frame->subbands - 1; sb++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
frame->join |= ((data[4] >> (7 - sb)) & 0x01) << sb;
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (frame->subbands == 4)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
crc_header[crc_pos / 8] = data[4] & 0xf0;
Coding style cleanup
2007-11-01 23:27:38 +08:00
else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
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); */
Coding style cleanup
2007-11-01 23:27:38 +08:00
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));
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
consumed += 4;
crc_pos += 4;
}
}
if (data[3] != sbc_crc8(crc_header, crc_pos))
return -3;
sbc_calculate_bits(frame, bits, sf);
for (blk = 0; blk < frame->blocks; blk++) {
for (ch = 0; ch < frame->channels; ch++) {
for (sb = 0; sb < frame->subbands; sb++) {
frame->audio_sample[blk][ch][sb] = 0;
if (bits[ch][sb] == 0)
continue;
for (bit = 0; bit < bits[ch][sb]; bit++) {
int b; /* A bit */
if (consumed > len * 8)
return -1;
b = (data[consumed >> 3] >> (7 - (consumed & 0x7))) & 0x01;
Coding style cleanup
2007-11-01 23:27:38 +08:00
frame->audio_sample[blk][ch][sb] |=
b << (bits[ch][sb] - bit - 1);
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
consumed++;
}
}
}
}
for (ch = 0; ch < frame->channels; ch++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
for (sb = 0; sb < frame->subbands; sb++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
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) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
frame->sb_sample[blk][ch][sb] =
(((frame->audio_sample[blk][ch][sb] << 16) | 0x8000) /
levels[ch][sb]) - 0x8000;
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
frame->sb_sample[blk][ch][sb] >>= 3;
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* Q13 */
frame->sb_sample[blk][ch][sb] =
(frame->sb_sample[blk][ch][sb] <<
(frame->scale_factor[ch][sb] + 1));
} else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
frame->sb_sample[blk][ch][sb] = 0;
}
}
}
if (frame->channel_mode == JOINT_STEREO) {
for (blk = 0; blk < frame->blocks; blk++) {
for (sb = 0; sb < frame->subbands; sb++) {
if (frame->join & (0x01 << sb)) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
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];
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
frame->sb_sample[blk][0][sb] = temp;
}
}
}
}
if ((consumed & 0x7) != 0)
consumed += 8 - (consumed & 0x7);
return consumed >> 3;
}
Coding style cleanup
2007-11-01 23:27:38 +08:00
static void sbc_decoder_init(struct sbc_decoder_state *state,
const struct sbc_frame *frame)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
{
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, j, k, idx;
sbc_extended_t res;
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (i = 0; i < 8; i++) {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
/* Shifting */
state->offset[ch][i]--;
whitespace fixes
2007-03-24 22:01:31 +08:00
if (state->offset[ch][i] < 0) {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
state->offset[ch][i] = 79;
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (j = 0; j < 9; j++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
state->V[ch][j+80] = state->V[ch][j];
}
}
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (i = 0; i < 8; i++) {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
/* Distribute the new matrix value to the shifted position */
SBC_FIXED_0(res);
Coding style cleanup
2007-11-01 23:27:38 +08:00
for (j = 0; j < 4; j++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
MULA(res, synmatrix4[i][j], frame->sb_sample[blk][ch][j]);
state->V[ch][state->offset[ch][i]] = SCALE4_STAGED1(res);
}
/* Compute the samples */
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (idx = 0, i = 0; i < 4; i++) {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
k = (i + 4) & 0xf;
SBC_FIXED_0(res);
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (j = 0; j < 10; idx++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
MULA(res, state->V[ch][state->offset[ch][i]+j++],
sbc_proto_4_40m0[idx]);
MULA(res, state->V[ch][state->offset[ch][k]+j++],
sbc_proto_4_40m1[idx]);
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* Store in output, Q0 */
frame->pcm_sample[ch][blk * 4 + i] = SCALE4_STAGED2(res);
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
}
static inline void sbc_synthesize_eight(struct sbc_decoder_state *state,
struct sbc_frame *frame, int ch, int blk)
{
int i, j, k, idx;
sbc_extended_t res;
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (i = 0; i < 16; i++) {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
/* Shifting */
state->offset[ch][i]--;
whitespace fixes
2007-03-24 22:01:31 +08:00
if (state->offset[ch][i] < 0) {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
state->offset[ch][i] = 159;
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (j = 0; j < 9; j++)
Coding style cleanup
2007-11-01 23:27:38 +08:00
state->V[ch][j+160] = state->V[ch][j];
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
}
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (i = 0; i < 16; i++) {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
/* Distribute the new matrix value to the shifted position */
SBC_FIXED_0(res);
for (j = 0; j < 8; j++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* Q28 = Q15 * Q13 */
MULA(res, synmatrix8[i][j], frame->sb_sample[blk][ch][j]);
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* Q10 */
state->V[ch][state->offset[ch][i]] = SCALE8_STAGED1(res);
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
/* Compute the samples */
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (idx = 0, i = 0; i < 8; i++) {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
k = (i + 8) & 0xf;
SBC_FIXED_0(res);
More coding style cleanup
2007-11-02 17:05:57 +08:00
for (j = 0; j < 10; idx++) {
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
MULA(res, state->V[ch][state->offset[ch][i]+j++], sbc_proto_8_80m0[idx]);
MULA(res, state->V[ch][state->offset[ch][k]+j++], sbc_proto_8_80m1[idx]);
}
/* Store in output */
frame->pcm_sample[ch][blk * 8 + i] = SCALE8_STAGED2(res); // Q0
}
}
Coding style cleanup
2007-11-01 23:27:38 +08:00
static int sbc_synthesize_audio(struct sbc_decoder_state *state,
struct sbc_frame *frame)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
{
int ch, blk;
Coding style cleanup
2007-11-01 23:27:38 +08:00
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
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;
}
}
Coding style cleanup
2007-11-01 23:27:38 +08:00
static void sbc_encoder_init(struct sbc_encoder_state *state,
const struct sbc_frame *frame)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
{
memset(&state->X, 0, sizeof(state->X));
state->subbands = frame->subbands;
}
static inline void _sbc_analyze_four(const int32_t *in, int32_t *out)
{
sbc_extended_t res;
sbc_extended_t t[8];
enable 4 subband lower half optimizations
2007-10-05 02:28:17 +08:00
sbc_extended_t s[4];
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
Coding style cleanup
2007-11-01 23:27:38 +08:00
MUL(res, _sbc_proto_4[0], (in[8] - in[32])); /* Q18 */
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
MULA(res, _sbc_proto_4[1], (in[16] - in[24]));
Coding style cleanup
2007-11-01 23:27:38 +08:00
t[0] = SCALE4_STAGE1(res); /* Q8 */
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
MUL(res, _sbc_proto_4[2], in[1]);
MULA(res, _sbc_proto_4[3], in[9]);
MULA(res, _sbc_proto_4[4], in[17]);
MULA(res, _sbc_proto_4[5], in[25]);
MULA(res, _sbc_proto_4[6], in[33]);
t[1] = SCALE4_STAGE1(res);
MUL(res, _sbc_proto_4[7], in[2]);
MULA(res, _sbc_proto_4[8], in[10]);
MULA(res, _sbc_proto_4[9], in[18]);
MULA(res, _sbc_proto_4[10], in[26]);
MULA(res, _sbc_proto_4[11], in[34]);
t[2] = SCALE4_STAGE1(res);
MUL(res, _sbc_proto_4[12], in[3]);
MULA(res, _sbc_proto_4[13], in[11]);
MULA(res, _sbc_proto_4[14], in[19]);
MULA(res, _sbc_proto_4[15], in[27]);
MULA(res, _sbc_proto_4[16], in[35]);
t[3] = SCALE4_STAGE1(res);
a little more factoring
2007-10-06 08:34:35 +08:00
MUL(res, _sbc_proto_4[17], in[4] + in[36]);
MULA(res, _sbc_proto_4[18], in[12] + in[28]);
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
MULA(res, _sbc_proto_4[19], in[20]);
t[4] = SCALE4_STAGE1(res);
MUL(res, _sbc_proto_4[16], in[5]);
MULA(res, _sbc_proto_4[15], in[13]);
MULA(res, _sbc_proto_4[14], in[21]);
MULA(res, _sbc_proto_4[13], in[29]);
MULA(res, _sbc_proto_4[12], in[37]);
t[5] = SCALE4_STAGE1(res);
clean out dead code
2007-10-06 08:01:51 +08:00
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* don't compute t[6]... this term always multiplies
* with cos(pi/2) = 0 */
clean out dead code
2007-10-06 08:01:51 +08:00
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
MUL(res, _sbc_proto_4[6], in[7]);
MULA(res, _sbc_proto_4[5], in[15]);
MULA(res, _sbc_proto_4[4], in[23]);
MULA(res, _sbc_proto_4[3], in[31]);
MULA(res, _sbc_proto_4[2], in[39]);
t[7] = SCALE4_STAGE1(res);
fix MUL* macros with () factor more multiplies in 4-subband encoder
2007-10-05 13:42:55 +08:00
MUL(s[0], _anamatrix4[0], t[0] + t[4]);
enable 4 subband lower half optimizations
2007-10-05 02:28:17 +08:00
MUL(s[1], _anamatrix4[2], t[2]);
fix MUL* macros with () factor more multiplies in 4-subband encoder
2007-10-05 13:42:55 +08:00
MUL(s[2], _anamatrix4[1], t[1] + t[3]);
MULA(s[2], _anamatrix4[3], t[5] + t[7]);
MUL(s[3], _anamatrix4[3], t[1] + t[3]);
MULA(s[3], _anamatrix4[1], - t[5] + t[7]);
Coding style cleanup
2007-11-01 23:27:38 +08:00
out[0] = SCALE4_STAGE2( s[0] + s[1] + s[2]); /* Q0 */
enable 4 subband lower half optimizations
2007-10-05 02:28:17 +08:00
out[1] = SCALE4_STAGE2(-s[0] + s[1] + s[3]);
out[2] = SCALE4_STAGE2(-s[0] + s[1] - s[3]);
out[3] = SCALE4_STAGE2( s[0] + s[1] - s[2]);
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
More coding style cleanup
2007-11-02 17:05:57 +08:00
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
static inline void sbc_analyze_four(struct sbc_encoder_state *state,
struct sbc_frame *frame, int ch, int blk)
{
int i;
/* Input 4 New Audio Samples */
for (i = 39; i >= 4; i--)
state->X[ch][i] = state->X[ch][i - 4];
for (i = 3; i >= 0; i--)
state->X[ch][i] = frame->pcm_sample[ch][blk * 4 + (3 - i)];
_sbc_analyze_four(state->X[ch], frame->sb_sample_f[blk][ch]);
}
static inline void _sbc_analyze_eight(const int32_t *in, int32_t *out)
{
sbc_extended_t res;
sbc_extended_t t[8];
a (disabled for now) cpu optimization for the bottom half of the 8 subbands encoder. seems to work fine.
2007-10-04 15:42:57 +08:00
sbc_extended_t s[8];
Coding style cleanup
2007-11-01 23:27:38 +08:00
MUL(res, _sbc_proto_8[0], (in[16] - in[64])); /* Q18 = Q18 * Q0 */
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
MULA(res, _sbc_proto_8[1], (in[32] - in[48]));
MULA(res, _sbc_proto_8[2], in[4]);
MULA(res, _sbc_proto_8[3], in[20]);
MULA(res, _sbc_proto_8[4], in[36]);
MULA(res, _sbc_proto_8[5], in[52]);
Coding style cleanup
2007-11-01 23:27:38 +08:00
t[0] = SCALE8_STAGE1(res); /* Q10 */
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
MUL(res, _sbc_proto_8[6], in[2]);
MULA(res, _sbc_proto_8[7], in[18]);
MULA(res, _sbc_proto_8[8], in[34]);
MULA(res, _sbc_proto_8[9], in[50]);
MULA(res, _sbc_proto_8[10], in[66]);
t[1] = SCALE8_STAGE1(res);
MUL(res, _sbc_proto_8[11], in[1]);
MULA(res, _sbc_proto_8[12], in[17]);
MULA(res, _sbc_proto_8[13], in[33]);
MULA(res, _sbc_proto_8[14], in[49]);
MULA(res, _sbc_proto_8[15], in[65]);
MULA(res, _sbc_proto_8[16], in[3]);
MULA(res, _sbc_proto_8[17], in[19]);
MULA(res, _sbc_proto_8[18], in[35]);
MULA(res, _sbc_proto_8[19], in[51]);
MULA(res, _sbc_proto_8[20], in[67]);
t[2] = SCALE8_STAGE1(res);
MUL(res, _sbc_proto_8[21], in[5]);
MULA(res, _sbc_proto_8[22], in[21]);
MULA(res, _sbc_proto_8[23], in[37]);
MULA(res, _sbc_proto_8[24], in[53]);
MULA(res, _sbc_proto_8[25], in[69]);
MULA(res, -_sbc_proto_8[15], in[15]);
MULA(res, -_sbc_proto_8[14], in[31]);
MULA(res, -_sbc_proto_8[13], in[47]);
MULA(res, -_sbc_proto_8[12], in[63]);
MULA(res, -_sbc_proto_8[11], in[79]);
t[3] = SCALE8_STAGE1(res);
MUL(res, _sbc_proto_8[26], in[6]);
MULA(res, _sbc_proto_8[27], in[22]);
MULA(res, _sbc_proto_8[28], in[38]);
MULA(res, _sbc_proto_8[29], in[54]);
MULA(res, _sbc_proto_8[30], in[70]);
MULA(res, -_sbc_proto_8[10], in[14]);
MULA(res, -_sbc_proto_8[9], in[30]);
MULA(res, -_sbc_proto_8[8], in[46]);
MULA(res, -_sbc_proto_8[7], in[62]);
MULA(res, -_sbc_proto_8[6], in[78]);
t[4] = SCALE8_STAGE1(res);
MUL(res, _sbc_proto_8[31], in[7]);
MULA(res, _sbc_proto_8[32], in[23]);
MULA(res, _sbc_proto_8[33], in[39]);
MULA(res, _sbc_proto_8[34], in[55]);
MULA(res, _sbc_proto_8[35], in[71]);
MULA(res, -_sbc_proto_8[20], in[13]);
MULA(res, -_sbc_proto_8[19], in[29]);
MULA(res, -_sbc_proto_8[18], in[45]);
MULA(res, -_sbc_proto_8[17], in[61]);
MULA(res, -_sbc_proto_8[16], in[77]);
t[5] = SCALE8_STAGE1(res);
a little more factoring
2007-10-06 08:34:35 +08:00
MUL(res, _sbc_proto_8[36], in[8] + in[72]);
MULA(res, _sbc_proto_8[37], in[24] + in[56]);
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
MULA(res, _sbc_proto_8[38], in[40]);
MULA(res, -_sbc_proto_8[39], in[12]);
MULA(res, -_sbc_proto_8[5], in[28]);
MULA(res, -_sbc_proto_8[4], in[44]);
MULA(res, -_sbc_proto_8[3], in[60]);
MULA(res, -_sbc_proto_8[2], in[76]);
t[6] = SCALE8_STAGE1(res);
MUL(res, _sbc_proto_8[35], in[9]);
MULA(res, _sbc_proto_8[34], in[25]);
MULA(res, _sbc_proto_8[33], in[41]);
MULA(res, _sbc_proto_8[32], in[57]);
MULA(res, _sbc_proto_8[31], in[73]);
MULA(res, -_sbc_proto_8[25], in[11]);
MULA(res, -_sbc_proto_8[24], in[27]);
MULA(res, -_sbc_proto_8[23], in[43]);
MULA(res, -_sbc_proto_8[22], in[59]);
MULA(res, -_sbc_proto_8[21], in[75]);
t[7] = SCALE8_STAGE1(res);
Coding style cleanup
2007-11-01 23:27:38 +08:00
MUL(s[0], _anamatrix8[0], t[0]); /* = Q14 * Q10 */
a (disabled for now) cpu optimization for the bottom half of the 8 subbands encoder. seems to work fine.
2007-10-04 15:42:57 +08:00
MULA(s[0], _anamatrix8[1], t[6]);
MUL(s[1], _anamatrix8[7], t[1]);
off-by-one problem in 8 subband optimization
2007-10-04 16:08:59 +08:00
MUL(s[2], _anamatrix8[2], t[2]);
MULA(s[2], _anamatrix8[3], t[3]);
a (disabled for now) cpu optimization for the bottom half of the 8 subbands encoder. seems to work fine.
2007-10-04 15:42:57 +08:00
MULA(s[2], _anamatrix8[4], t[5]);
MULA(s[2], _anamatrix8[5], t[7]);
MUL(s[3], _anamatrix8[6], t[4]);
MUL(s[4], _anamatrix8[3], t[2]);
MULA(s[4], -_anamatrix8[5], t[3]);
MULA(s[4], -_anamatrix8[2], t[5]);
MULA(s[4], -_anamatrix8[4], t[7]);
MUL(s[5], _anamatrix8[4], t[2]);
MULA(s[5], -_anamatrix8[2], t[3]);
MULA(s[5], _anamatrix8[5], t[5]);
MULA(s[5], _anamatrix8[3], t[7]);
MUL(s[6], _anamatrix8[1], t[0]);
MULA(s[6], -_anamatrix8[0], t[6]);
MUL(s[7], _anamatrix8[5], t[2]);
MULA(s[7], -_anamatrix8[4], t[3]);
MULA(s[7], _anamatrix8[3], t[5]);
fix & enable 8-subband second half optimization
2007-10-05 00:05:40 +08:00
MULA(s[7], -_anamatrix8[2], t[7]);
a (disabled for now) cpu optimization for the bottom half of the 8 subbands encoder. seems to work fine.
2007-10-04 15:42:57 +08:00
out[0] = SCALE8_STAGE2( s[0] + s[1] + s[2] + s[3]);
out[1] = SCALE8_STAGE2( s[1] - s[3] + s[4] + s[6]);
out[2] = SCALE8_STAGE2( s[1] - s[3] + s[5] - s[6]);
out[3] = SCALE8_STAGE2(-s[0] + s[1] + s[3] + s[7]);
out[4] = SCALE8_STAGE2(-s[0] + s[1] + s[3] - s[7]);
8-subband encoder had a sign error that made high frequencies noisy
2007-10-17 15:36:25 +08:00
out[5] = SCALE8_STAGE2( s[1] - s[3] - s[5] - s[6]);
a (disabled for now) cpu optimization for the bottom half of the 8 subbands encoder. seems to work fine.
2007-10-04 15:42:57 +08:00
out[6] = SCALE8_STAGE2( s[1] - s[3] - s[4] + s[6]);
out[7] = SCALE8_STAGE2( s[0] + s[1] - s[2] + s[3]);
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
static inline void sbc_analyze_eight(struct sbc_encoder_state *state,
Coding style cleanup
2007-11-01 23:27:38 +08:00
struct sbc_frame *frame, int ch,
int blk)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
{
int i;
/* Input 8 Audio Samples */
for (i = 79; i >= 8; i--)
state->X[ch][i] = state->X[ch][i - 8];
for (i = 7; i >= 0; i--)
state->X[ch][i] = frame->pcm_sample[ch][blk * 8 + (7 - i)];
_sbc_analyze_eight(state->X[ch], frame->sb_sample_f[blk][ch]);
}
Coding style cleanup
2007-11-01 23:27:38 +08:00
static int sbc_analyze_audio(struct sbc_encoder_state *state,
struct sbc_frame *frame)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
{
int ch, blk;
switch (frame->subbands) {
case 4:
for (ch = 0; ch < frame->channels; ch++)
Coding style cleanup
2007-11-01 23:27:38 +08:00
for (blk = 0; blk < frame->blocks; blk++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
sbc_analyze_four(state, frame, ch, blk);
return frame->blocks * 4;
case 8:
for (ch = 0; ch < frame->channels; ch++)
Coding style cleanup
2007-11-01 23:27:38 +08:00
for (blk = 0; blk < frame->blocks; blk++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
sbc_analyze_eight(state, frame, ch, blk);
return frame->blocks * 8;
default:
return -EIO;
}
}
/*
* Packs the SBC frame from frame into the memory at data. At most len
Coding style cleanup
2007-11-01 23:27:38 +08:00
* bytes will be used, should more memory be needed an appropriate
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
* error code will be returned. Returns the length of the packed frame
Coding style cleanup
2007-11-01 23:27:38 +08:00
* on success or a negative value on error.
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
*
* 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
*/
More coding style cleanup
2007-11-02 17:05:57 +08:00
static int sbc_pack_frame(uint8_t *data, struct sbc_frame *frame, size_t len)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
{
int produced;
/* 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;
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* Sampling frequency as temporary value for table lookup */
uint8_t sf;
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
int ch, sb, blk, bit; /* channel, subband, block and bit counters */
int bits[2][8]; /* bits distribution */
int levels[2][8]; /* levels are derived from that */
u_int32_t scalefactor[2][8]; /* derived from frame->scale_factor */
More coding style cleanup
2007-11-02 17:05:57 +08:00
if (len < 4)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
return -1;
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* Clear first 4 bytes of data (that's the constant length part of the
* SBC header) */
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
memset(data, 0, 4);
data[0] = SBC_SYNCWORD;
if (frame->sampling_frequency == 16000) {
data[1] |= (SBC_FS_16 & 0x03) << 6;
sf = SBC_FS_16;
} else if (frame->sampling_frequency == 32000) {
data[1] |= (SBC_FS_32 & 0x03) << 6;
sf = SBC_FS_32;
} else if (frame->sampling_frequency == 44100) {
data[1] |= (SBC_FS_44 & 0x03) << 6;
sf = SBC_FS_44;
} else if (frame->sampling_frequency == 48000) {
data[1] |= (SBC_FS_48 & 0x03) << 6;
sf = SBC_FS_48;
More coding style cleanup
2007-11-02 17:05:57 +08:00
} else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
return -2;
switch (frame->blocks) {
case 4:
data[1] |= (SBC_NB_4 & 0x03) << 4;
break;
case 8:
data[1] |= (SBC_NB_8 & 0x03) << 4;
break;
case 12:
data[1] |= (SBC_NB_12 & 0x03) << 4;
break;
case 16:
data[1] |= (SBC_NB_16 & 0x03) << 4;
break;
default:
return -3;
break;
}
data[1] |= (frame->channel_mode & 0x03) << 2;
data[1] |= (frame->allocation_method & 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;
More coding style cleanup
2007-11-02 17:05:57 +08:00
Coding style cleanup
2007-11-01 23:27:38 +08:00
if ((frame->channel_mode == MONO || frame->channel_mode == DUAL_CHANNEL) &&
frame->bitpool > 16 * frame->subbands)
return -5;
if ((frame->channel_mode == STEREO || frame->channel_mode == JOINT_STEREO) &&
frame->bitpool > 32 * frame->subbands)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
return -5;
/* Can't fill in crc yet */
produced = 32;
crc_header[0] = data[1];
crc_header[1] = data[2];
crc_pos = 16;
for (ch = 0; ch < frame->channels; ch++) {
for (sb = 0; sb < frame->subbands; sb++) {
frame->scale_factor[ch][sb] = 0;
scalefactor[ch][sb] = 2;
for (blk = 0; blk < frame->blocks; blk++) {
while (scalefactor[ch][sb] < fabs(frame->sb_sample_f[blk][ch][sb])) {
frame->scale_factor[ch][sb]++;
scalefactor[ch][sb] *= 2;
}
}
}
}
if (frame->channel_mode == JOINT_STEREO) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
/* like frame->sb_sample but joint stereo */
int32_t sb_sample_j[16][2][7];
/* scalefactor and scale_factor in joint case */
int scalefactor_j[2][7], scale_factor_j[2][7];
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
/* Calculate joint stereo signal */
for (sb = 0; sb < frame->subbands - 1; sb++) {
for (blk = 0; blk < frame->blocks; blk++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
sb_sample_j[blk][0][sb] =
(frame->sb_sample_f[blk][0][sb] +
frame->sb_sample_f[blk][1][sb]) >> 1;
sb_sample_j[blk][1][sb] =
(frame->sb_sample_f[blk][0][sb] -
frame->sb_sample_f[blk][1][sb]) >> 1;
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
}
/* calculate scale_factor_j and scalefactor_j for joint case */
for (ch = 0; ch < 2; ch++) {
for (sb = 0; sb < frame->subbands - 1; sb++) {
scale_factor_j[ch][sb] = 0;
scalefactor_j[ch][sb] = 2;
for (blk = 0; blk < frame->blocks; blk++) {
while (scalefactor_j[ch][sb] < fabs(sb_sample_j[blk][ch][sb])) {
scale_factor_j[ch][sb]++;
scalefactor_j[ch][sb] *= 2;
}
}
}
}
/* decide which subbands to join */
frame->join = 0;
for (sb = 0; sb < frame->subbands - 1; sb++) {
if ((scalefactor[0][sb] + scalefactor[1][sb]) >
(scalefactor_j[0][sb] + scalefactor_j[1][sb]) ) {
/* use joint stereo for this subband */
frame->join |= 1 << sb;
frame->scale_factor[0][sb] = scale_factor_j[0][sb];
frame->scale_factor[1][sb] = scale_factor_j[1][sb];
scalefactor[0][sb] = scalefactor_j[0][sb];
scalefactor[1][sb] = scalefactor_j[1][sb];
for (blk = 0; blk < frame->blocks; blk++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
frame->sb_sample_f[blk][0][sb] =
sb_sample_j[blk][0][sb];
frame->sb_sample_f[blk][1][sb] =
sb_sample_j[blk][1][sb];
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
}
}
if (len * 8 < produced + frame->subbands)
return -1;
data[4] = 0;
Coding style cleanup
2007-11-01 23:27:38 +08:00
for (sb = 0; sb < frame->subbands - 1; sb++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
data[4] |= ((frame->join >> sb) & 0x01) << (7 - sb);
More coding style cleanup
2007-11-02 17:05:57 +08:00
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (frame->subbands == 4)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
crc_header[crc_pos / 8] = data[4] & 0xf0;
Coding style cleanup
2007-11-01 23:27:38 +08:00
else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
crc_header[crc_pos / 8] = data[4];
Coding style cleanup
2007-11-01 23:27:38 +08:00
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
produced += frame->subbands;
crc_pos += frame->subbands;
}
if (len * 8 < produced + (4 * frame->subbands * frame->channels))
return -1;
for (ch = 0; ch < frame->channels; ch++) {
for (sb = 0; sb < frame->subbands; sb++) {
if (produced % 8 == 0)
data[produced / 8] = 0;
data[produced / 8] |= ((frame->scale_factor[ch][sb] & 0x0F) << (4 - (produced % 8)));
crc_header[crc_pos / 8] |= ((frame->scale_factor[ch][sb] & 0x0F) << (4 - (crc_pos % 8)));
produced += 4;
crc_pos += 4;
}
}
data[3] = sbc_crc8(crc_header, crc_pos);
sbc_calculate_bits(frame, bits, sf);
for (ch = 0; ch < frame->channels; ch++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
for (sb = 0; sb < frame->subbands; sb++)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
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++) {
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (levels[ch][sb] > 0)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
frame->audio_sample[blk][ch][sb] =
Coding style cleanup
2007-11-01 23:27:38 +08:00
(uint16_t) ((((frame->sb_sample_f[blk][ch][sb]*levels[ch][sb]) >>
(frame->scale_factor[ch][sb] + 1)) +
levels[ch][sb]) >> 1);
else
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
frame->audio_sample[blk][ch][sb] = 0;
}
}
}
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) {
for (bit = 0; bit < bits[ch][sb]; bit++) {
int b; /* A bit */
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (produced > len * 8)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
return -1;
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (produced % 8 == 0)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
data[produced / 8] = 0;
Coding style cleanup
2007-11-01 23:27:38 +08:00
b = ((frame->audio_sample[blk][ch][sb]) >>
(bits[ch][sb] - bit - 1)) & 0x01;
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
data[produced / 8] |= b << (7 - (produced % 8));
produced++;
}
}
}
}
}
Coding style cleanup
2007-11-01 23:27:38 +08:00
if (produced % 8 != 0)
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
produced += 8 - (produced % 8);
return produced / 8;
}
struct sbc_priv {
int init;
struct sbc_frame frame;
struct sbc_decoder_state dec_state;
struct sbc_encoder_state enc_state;
};
int sbc_init(sbc_t *sbc, unsigned long flags)
{
if (!sbc)
return -EIO;
memset(sbc, 0, sizeof(sbc_t));
sbc->priv = malloc(sizeof(struct sbc_priv));
if (!sbc->priv)
return -ENOMEM;
memset(sbc->priv, 0, sizeof(struct sbc_priv));
sbc->rate = 44100;
sbc->channels = 2;
sbc->joint = 0;
sbc->subbands = 8;
sbc->blocks = 16;
sbc->bitpool = 32;
Add swap member to sbc struct and fix pcm plugin to not swap the buffer.
2007-08-22 05:32:09 +08:00
sbc->swap = 0;
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
return 0;
}
Add simple implementation of sbc_parse()
2007-08-26 21:54:24 +08:00
int sbc_parse(sbc_t *sbc, void *data, int count)
{
return sbc_decode(sbc, data, count);
}
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
int sbc_decode(sbc_t *sbc, void *data, int count)
{
struct sbc_priv *priv;
char *ptr;
int i, ch, framelen, samples;
if (!sbc)
return -EIO;
priv = sbc->priv;
framelen = sbc_unpack_frame(data, &priv->frame, count);
if (!priv->init) {
sbc_decoder_init(&priv->dec_state, &priv->frame);
priv->init = 1;
sbc->rate = priv->frame.sampling_frequency;
sbc->channels = priv->frame.channels;
sbc->subbands = priv->frame.subbands;
sbc->blocks = priv->frame.blocks;
sbc->bitpool = priv->frame.bitpool;
}
samples = sbc_synthesize_audio(&priv->dec_state, &priv->frame);
if (!sbc->data) {
sbc->size = samples * priv->frame.channels * 2;
sbc->data = malloc(sbc->size);
}
if (sbc->size < samples * priv->frame.channels * 2) {
sbc->size = samples * priv->frame.channels * 2;
sbc->data = realloc(sbc->data, sbc->size);
}
if (!sbc->data) {
sbc->size = 0;
return -ENOMEM;
}
ptr = sbc->data;
for (i = 0; i < samples; i++) {
for (ch = 0; ch < priv->frame.channels; ch++) {
int16_t s;
s = priv->frame.pcm_sample[ch][i];
Add swap member to sbc struct and fix pcm plugin to not swap the buffer.
2007-08-22 05:32:09 +08:00
if (sbc->swap) {
*ptr++ = (s & 0xff00) >> 8;
*ptr++ = (s & 0x00ff);
} else {
*ptr++ = (s & 0x00ff);
*ptr++ = (s & 0xff00) >> 8;
}
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
}
}
sbc->len = samples * priv->frame.channels * 2;
return framelen;
}
int sbc_encode(sbc_t *sbc, void *data, int count)
{
struct sbc_priv *priv;
char *ptr;
int i, ch, framelen, samples;
if (!sbc)
return -EIO;
priv = sbc->priv;
if (!priv->init) {
priv->frame.sampling_frequency = sbc->rate;
priv->frame.channels = sbc->channels;
if (sbc->channels > 1) {
if (sbc->joint)
priv->frame.channel_mode = JOINT_STEREO;
else
priv->frame.channel_mode = STEREO;
} else
priv->frame.channel_mode = MONO;
Don't hardcode allocation method to SNR
2007-08-11 18:56:46 +08:00
priv->frame.allocation_method = sbc->allocation;
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
priv->frame.subbands = sbc->subbands;
priv->frame.blocks = sbc->blocks;
priv->frame.bitpool = sbc->bitpool;
sbc_encoder_init(&priv->enc_state, &priv->frame);
priv->init = 1;
}
indicate 0 bytes consumed in encoder if input is too short. caller is responsible for filling the end of the input if it really wants the frame encoded (ie with silence at the end)
2007-08-26 09:05:25 +08:00
/* input must be large enough to encode a complete frame */
if (count < priv->frame.subbands * priv->frame.blocks * sbc->channels * 2)
return 0;
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
ptr = data;
for (i = 0; i < priv->frame.subbands * priv->frame.blocks; i++) {
for (ch = 0; ch < sbc->channels; ch++) {
Add swap member to sbc struct and fix pcm plugin to not swap the buffer.
2007-08-22 05:32:09 +08:00
int16_t s;
if (sbc->swap)
s = (ptr[0] & 0xff) << 8 | (ptr[1] & 0xff);
else
s = (ptr[0] & 0xff) | (ptr[1] & 0xff) << 8;
update the sbc encoder from the working fixed-point code in the sbc project I also tagged the sbc project with "copied-to-bluez-utils" at the same time. We will do sbc work under bluez and sync it with the old sbc project if necessary.
2007-03-17 21:37:31 +08:00
ptr += 2;
priv->frame.pcm_sample[ch][i] = s;
}
}
samples = sbc_analyze_audio(&priv->enc_state, &priv->frame);
if (!sbc->data) {
sbc->size = 1024;
sbc->data = malloc(sbc->size);
}
if (!sbc->data) {
sbc->size = 0;
return -ENOMEM;
}
framelen = sbc_pack_frame(sbc->data, &priv->frame, sbc->size);
sbc->len = framelen;
sbc->duration = (1000000 * priv->frame.subbands * priv->frame.blocks) / sbc->rate;
return samples * sbc->channels * 2;
}
void sbc_finish(sbc_t *sbc)
{
if (!sbc)
return;
if (sbc->data)
free(sbc->data);
if (sbc->priv)
free(sbc->priv);
memset(sbc, 0, sizeof(sbc_t));
}
Reference in New Issue Copy Permalink