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sbc decoder: merge decoder + encoder

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This commit is contained in:
Milanka Ringwald 2016-07-27 11:03:55 +02:00
parent e7a4112819
commit 0c87db9ec5
13 changed files with 279 additions and 327 deletions
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4
example/Makefile.inc
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@ -74,10 +74,10 @@ include ${SBC_ENCODER_ROOT}/Makefile.inc
SBC_DECODER += \
${BTSTACK_ROOT}/src/classic/btstack_sbc_plc.c \
${BTSTACK_ROOT}/src/classic/btstack_sbc_decoder_bludroid.c \
${BTSTACK_ROOT}/src/classic/btstack_sbc_bludroid.c \
SBC_ENCODER += \
${BTSTACK_ROOT}/src/classic/btstack_sbc_encoder_bludroid.c \
${BTSTACK_ROOT}/src/classic/btstack_sbc_bludroid.c \
${BTSTACK_ROOT}/src/classic/hfp_msbc.c \
EXAMPLES = \

1
example/hfp_hf_demo.c
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@ -59,7 +59,6 @@
#include <unistd.h>
#include "btstack.h"
#include "btstack_sbc_decoder.h"
#include "sco_demo_util.h"
#ifdef HAVE_POSIX_STDIN

3
example/sco_demo_util.c
View File

@ -44,8 +44,7 @@
#include "sco_demo_util.h"
#include "btstack_debug.h"
#include "btstack_sbc_decoder.h"
#include "btstack_sbc_encoder.h"
#include "btstack_sbc.h"
#include "hfp_msbc.h"
#include "hfp.h"

100
src/classic/btstack_sbc.h
View File

@ -44,12 +44,112 @@
#define __BTSTACK_SBC_H
#include <stdint.h>
#include "btstack_sbc_plc.h"
typedef enum{
SBC_MODE_STANDARD,
SBC_MODE_mSBC
} btstack_sbc_mode_t;
typedef struct {
void * context;
void (*handle_pcm_data)(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context);
// private
void * decoder_state;
btstack_sbc_plc_state_t plc_state;
btstack_sbc_mode_t mode;
// summary of processed good, bad and zero frames
int good_frames_nr;
int bad_frames_nr;
int zero_frames_nr;
} btstack_sbc_decoder_state_t;
typedef struct {
// private
void * encoder_state;
btstack_sbc_mode_t mode;
} btstack_sbc_encoder_state_t;
/* API_START */
/* BTstack SBC decoder */
/**
* @brief Init SBC decoder
* @param state
* @param mode
* @param callback for decoded PCM data
* @param context provided in callback
*/
void btstack_sbc_decoder_init(btstack_sbc_decoder_state_t * state, btstack_sbc_mode_t mode, void (*callback)(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context), void * context);
/**
* @brief Process received SCO data
* @param state
* @param packet_status_flag from SCO packet: 0 = OK, 1 = possibly invalid data, 2 = no data received, 3 = data partially lost
* @param buffer
* @param size
*/
void btstack_sbc_decoder_process_data(btstack_sbc_decoder_state_t * state, int packet_status_flag, uint8_t * buffer, int size);
/**
* @brief Get number of samples per SBC frame
*/
int btstack_sbc_decoder_num_samples_per_frame(btstack_sbc_decoder_state_t * state);
/*
* @brief Get number of channels
*/
int btstack_sbc_decoder_num_channels(btstack_sbc_decoder_state_t * state);
/*
* @brief Get sample rate in hz
*/
int btstack_sbc_decoder_sample_rate(btstack_sbc_decoder_state_t * state);
/* BTstack SBC Encoder */
/**
* @brief Init SBC encoder
* @param state
* @param mode
* @param blocks
* @param subbands
* @param allocation_method
* @param sample_rate
* @param bitpool
*/
void btstack_sbc_encoder_init(btstack_sbc_encoder_state_t * state, btstack_sbc_mode_t mode,
int blocks, int subbands, int allocation_method, int sample_rate, int bitpool);
/**
* @brief Process received PCM data
* @param buffer
*/
void btstack_sbc_encoder_process_data(int16_t * input_buffer);
/**
* @brief Return SBC frame
*/
uint8_t * btstack_sbc_encoder_sbc_buffer(void);
/**
* @brief Return SBC frame length
*/
uint16_t btstack_sbc_encoder_sbc_buffer_length(void);
/**
* @brief Return number of audio samples in one PCM frame
*/
int btstack_sbc_encoder_num_audio_samples(void);
/* API_END */
// testing only
void btstack_sbc_decoder_test_disable_plc(void);
void btstack_sbc_decoder_test_simulate_corrupt_frames(int period);
#if defined __cplusplus
}
#endif

151
src/classic/btstack_sbc_decoder_bludroid.c → src/classic/btstack_sbc_bludroid.c
View File

@ -37,7 +37,7 @@
// *****************************************************************************
//
// SBC decoder based on Bludroid library
// SBC decoder and encoder based on Bludroid library
//
// *****************************************************************************
@ -50,26 +50,24 @@
#include <fcntl.h>
#include <unistd.h>
#include "btstack_sbc_decoder.h"
#include "btstack_sbc.h"
#include "btstack_sbc_plc.h"
#include "oi_codec_sbc.h"
#include "oi_assert.h"
#include "btstack.h"
#include "sbc_encoder.h"
#define SBC_MAX_CHANNELS 2
#define DECODER_DATA_SIZE (SBC_MAX_CHANNELS*SBC_MAX_BLOCKS*SBC_MAX_BANDS * 2 + SBC_CODEC_MIN_FILTER_BUFFERS*SBC_MAX_BANDS*SBC_MAX_CHANNELS * 2)
#include "btstack.h"
#define mSBC_SYNCWORD 0xad
#define SBC_SYNCWORD 0x9c
#define SBC_MAX_CHANNELS 2
// #define LOG_FRAME_STATUS
// Testing only - START
static int plc_enabled = 1;
static int corrupt_frame_period = -1;
// Testing - STOP
// *****************************************************************************
// SBC decoder start
#define DECODER_DATA_SIZE (SBC_MAX_CHANNELS*SBC_MAX_BLOCKS*SBC_MAX_BANDS * 2 + SBC_CODEC_MIN_FILTER_BUFFERS*SBC_MAX_BANDS*SBC_MAX_CHANNELS * 2)
typedef struct {
OI_UINT32 bytes_in_frame_buffer;
@ -86,10 +84,41 @@ typedef struct {
int first_good_frame_found;
} bludroid_decoder_state_t;
static btstack_sbc_decoder_state_t * sbc_state_singelton = NULL;
static bludroid_decoder_state_t bd_state;
// Testing only - START
static int plc_enabled = 1;
static int corrupt_frame_period = -1;
// Testing - STOP
// SBC decoder end
// *****************************************************************************
// *****************************************************************************
// SBC encoder start
typedef struct {
SBC_ENC_PARAMS context;
int num_data_bytes;
uint8_t sbc_packet[1000];
} bludroid_encoder_state_t;
static btstack_sbc_encoder_state_t * sbc_encoder_state_singelton = NULL;
static bludroid_encoder_state_t bd_encoder_state;
// SBC encoder start
// *****************************************************************************
// *****************************************************************************
//
// SBC decoder based on Bludroid library
//
// *****************************************************************************
void btstack_sbc_decoder_test_disable_plc(void){
plc_enabled = 0;
}
@ -364,3 +393,103 @@ void btstack_sbc_decoder_process_data(btstack_sbc_decoder_state_t * state, int p
}
// printf ("<<-- exit -->>\n");
}
// *****************************************************************************
//
// SBC encoder based on Bludroid library
//
// *****************************************************************************
void btstack_sbc_encoder_init(btstack_sbc_encoder_state_t * state, btstack_sbc_mode_t mode,
int blocks, int subbands, int allmethod, int sample_rate, int bitpool){
if (sbc_encoder_state_singelton && sbc_encoder_state_singelton != state ){
log_error("SBC encoder: different sbc decoder state is allready registered");
}
sbc_encoder_state_singelton = state;
sbc_encoder_state_singelton->mode = mode;
switch (sbc_encoder_state_singelton->mode){
case SBC_MODE_STANDARD:
bd_encoder_state.context.s16NumOfBlocks = blocks;
bd_encoder_state.context.s16NumOfSubBands = subbands;
bd_encoder_state.context.s16AllocationMethod = allmethod;
bd_encoder_state.context.s16BitPool = 31;
bd_encoder_state.context.mSBCEnabled = 0;
switch(sample_rate){
case 16000: bd_encoder_state.context.s16SamplingFreq = SBC_sf16000; break;
case 32000: bd_encoder_state.context.s16SamplingFreq = SBC_sf32000; break;
case 44100: bd_encoder_state.context.s16SamplingFreq = SBC_sf44100; break;
case 48000: bd_encoder_state.context.s16SamplingFreq = SBC_sf48000; break;
default: bd_encoder_state.context.s16SamplingFreq = 0; break;
}
break;
case SBC_MODE_mSBC:
bd_encoder_state.context.s16NumOfBlocks = 15;
bd_encoder_state.context.s16NumOfSubBands = 8;
bd_encoder_state.context.s16AllocationMethod = SBC_LOUDNESS;
bd_encoder_state.context.s16BitPool = 26;
bd_encoder_state.context.s16ChannelMode = SBC_MONO;
bd_encoder_state.context.s16NumOfChannels = 1;
bd_encoder_state.context.mSBCEnabled = 1;
bd_encoder_state.context.s16SamplingFreq = SBC_sf16000;
break;
}
bd_encoder_state.context.pu8Packet = bd_encoder_state.sbc_packet;
sbc_encoder_state_singelton->encoder_state = &bd_encoder_state;
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_encoder_state_singelton->encoder_state)->context;
SBC_Encoder_Init(context);
}
void btstack_sbc_encoder_process_data(int16_t * input_buffer){
if (!sbc_state_singelton){
log_error("SBC encoder: sbc state is NULL, call btstack_sbc_encoder_init to initialize it");
}
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_encoder_state_singelton->encoder_state)->context;
context->ps16PcmBuffer = input_buffer;
if (context->mSBCEnabled){
context->pu8Packet[0] = 0xad;
}
SBC_Encoder(context);
}
int btstack_sbc_encoder_num_audio_samples(void){
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_encoder_state_singelton->encoder_state)->context;
return context->s16NumOfSubBands * context->s16NumOfBlocks * context->s16NumOfChannels;
}
uint8_t * btstack_sbc_encoder_sbc_buffer(void){
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_encoder_state_singelton->encoder_state)->context;
return context->pu8Packet;
}
uint16_t btstack_sbc_encoder_sbc_buffer_length(void){
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_encoder_state_singelton->encoder_state)->context;
return context->u16PacketLength;
}
// static void btstack_sbc_encoder_dump_context(void){
// SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_encoder_state_singelton->encoder_state)->context;
// printf("Blocks %d\n", context->s16NumOfBlocks);
// printf("SubBands %d\n", context->s16NumOfSubBands);
// printf("Allocation Method %d\n", context->s16AllocationMethod);
// printf("BitPool %d\n", context->s16BitPool);
// printf("Channel Mode %d\n", context->s16ChannelMode);
// printf("Sample Rate ");
// switch (context->s16SamplingFreq){
// case 0: printf("16000\n"); break;
// case 1: printf("32000\n"); break;
// case 2: printf("44100\n"); break;
// case 3: printf("48000\n"); break;
// default: printf("not defined\n"); break;
// }
// printf("mSBC Enabled %d\n", context->mSBCEnabled);
// printf("\n");
// }

114
src/classic/btstack_sbc_decoder.h
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@ -1,114 +0,0 @@
/*
* Copyright (C) 2014 BlueKitchen GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Please inquire about commercial licensing options at
* contact@bluekitchen-gmbh.com
*
*/
/*
* btstack_sbc_decoder.h
*
*/
#ifndef __BTSTACK_SBC_DECODER_H
#define __BTSTACK_SBC_DECODER_H
#include <stdint.h>
#include "btstack_sbc.h"
#include "btstack_sbc_plc.h"
#if defined __cplusplus
extern "C" {
#endif
typedef struct {
void * context;
void (*handle_pcm_data)(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context);
// private
void * decoder_state;
btstack_sbc_plc_state_t plc_state;
btstack_sbc_mode_t mode;
// summary of processed good, bad and zero frames
int good_frames_nr;
int bad_frames_nr;
int zero_frames_nr;
} btstack_sbc_decoder_state_t;
/* API_START */
/**
* @brief Init SBC decoder
* @param state
* @param mode
* @param callback for decoded PCM data
* @param context provided in callback
*/
void btstack_sbc_decoder_init(btstack_sbc_decoder_state_t * state, btstack_sbc_mode_t mode, void (*callback)(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context), void * context);
/**
* @brief Process received SCO data
* @param state
* @param packet_status_flag from SCO packet: 0 = OK, 1 = possibly invalid data, 2 = no data received, 3 = data partially lost
* @param buffer
* @param size
*/
void btstack_sbc_decoder_process_data(btstack_sbc_decoder_state_t * state, int packet_status_flag, uint8_t * buffer, int size);
/**
* @brief Get number of samples per SBC frame
*/
int btstack_sbc_decoder_num_samples_per_frame(btstack_sbc_decoder_state_t * state);
/*
* @brief Get number of channels
*/
int btstack_sbc_decoder_num_channels(btstack_sbc_decoder_state_t * state);
/*
* @brief Get sample rate in hz
*/
int btstack_sbc_decoder_sample_rate(btstack_sbc_decoder_state_t * state);
/* API_END */
// testing only
void btstack_sbc_decoder_test_disable_plc(void);
void btstack_sbc_decoder_test_simulate_corrupt_frames(int period);
#if defined __cplusplus
}
#endif
#endif // __BTSTACK_SBC_DECODER_H

168
src/classic/btstack_sbc_encoder_bludroid.c
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@ -1,168 +0,0 @@
/*
* Copyright (C) 2014 BlueKitchen GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Please inquire about commercial licensing options at
* contact@bluekitchen-gmbh.com
*
*/
// *****************************************************************************
//
// SBC encoder based on Bludroid library
//
// *****************************************************************************
#include "btstack_config.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include "sbc_encoder.h"
#include "btstack_sbc_encoder.h"
#include "btstack.h"
#define SBC_MAX_CHANNELS 2
#define mSBC_SYNCWORD 0xad
#define SBC_SYNCWORD 0x9c
// #define LOG_FRAME_STATUS
typedef struct {
SBC_ENC_PARAMS context;
int num_data_bytes;
uint8_t sbc_packet[1000];
} bludroid_encoder_state_t;
static btstack_sbc_encoder_state_t * sbc_state_singelton = NULL;
static bludroid_encoder_state_t bd_state;
void btstack_sbc_encoder_dump_context(void){
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_state_singelton->encoder_state)->context;
printf("Blocks %d\n", context->s16NumOfBlocks);
printf("SubBands %d\n", context->s16NumOfSubBands);
printf("Allocation Method %d\n", context->s16AllocationMethod);
printf("BitPool %d\n", context->s16BitPool);
printf("Channel Mode %d\n", context->s16ChannelMode);
printf("Sample Rate ");
switch (context->s16SamplingFreq){
case 0: printf("16000\n"); break;
case 1: printf("32000\n"); break;
case 2: printf("44100\n"); break;
case 3: printf("48000\n"); break;
default: printf("not defined\n"); break;
}
printf("mSBC Enabled %d\n", context->mSBCEnabled);
printf("\n");
}
int btstack_sbc_encoder_num_audio_samples(void){
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_state_singelton->encoder_state)->context;
return context->s16NumOfSubBands * context->s16NumOfBlocks * context->s16NumOfChannels;
}
uint8_t * btstack_sbc_encoder_sbc_buffer(void){
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_state_singelton->encoder_state)->context;
return context->pu8Packet;
}
uint16_t btstack_sbc_encoder_sbc_buffer_length(void){
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_state_singelton->encoder_state)->context;
return context->u16PacketLength;
}
void btstack_sbc_encoder_init(btstack_sbc_encoder_state_t * state, btstack_sbc_mode_t mode,
int blocks, int subbands, int allmethod, int sample_rate, int bitpool){
if (sbc_state_singelton && sbc_state_singelton != state ){
log_error("SBC encoder: different sbc decoder state is allready registered");
}
sbc_state_singelton = state;
sbc_state_singelton->mode = mode;
switch (sbc_state_singelton->mode){
case SBC_MODE_STANDARD:
bd_state.context.s16NumOfBlocks = blocks;
bd_state.context.s16NumOfSubBands = subbands;
bd_state.context.s16AllocationMethod = allmethod;
bd_state.context.s16BitPool = 31;
bd_state.context.mSBCEnabled = 0;
switch(sample_rate){
case 16000: bd_state.context.s16SamplingFreq = SBC_sf16000; break;
case 32000: bd_state.context.s16SamplingFreq = SBC_sf32000; break;
case 44100: bd_state.context.s16SamplingFreq = SBC_sf44100; break;
case 48000: bd_state.context.s16SamplingFreq = SBC_sf48000; break;
default: bd_state.context.s16SamplingFreq = 0; break;
}
break;
case SBC_MODE_mSBC:
bd_state.context.s16NumOfBlocks = 15;
bd_state.context.s16NumOfSubBands = 8;
bd_state.context.s16AllocationMethod = SBC_LOUDNESS;
bd_state.context.s16BitPool = 26;
bd_state.context.s16ChannelMode = SBC_MONO;
bd_state.context.s16NumOfChannels = 1;
bd_state.context.mSBCEnabled = 1;
bd_state.context.s16SamplingFreq = SBC_sf16000;
break;
}
bd_state.context.pu8Packet = bd_state.sbc_packet;
sbc_state_singelton->encoder_state = &bd_state;
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_state_singelton->encoder_state)->context;
SBC_Encoder_Init(context);
}
void btstack_sbc_encoder_process_data(int16_t * input_buffer){
if (!sbc_state_singelton){
log_error("SBC encoder: sbc state is NULL, call btstack_sbc_encoder_init to initialize it");
}
SBC_ENC_PARAMS * context = &((bludroid_encoder_state_t *)sbc_state_singelton->encoder_state)->context;
context->ps16PcmBuffer = input_buffer;
if (context->mSBCEnabled){
context->pu8Packet[0] = 0xad;
}
SBC_Encoder(context);
}

2
src/classic/hfp_msbc.c
View File

@ -46,7 +46,7 @@
#include <string.h>
#include "btstack_debug.h"
#include "btstack_sbc_encoder.h"
#include "btstack_sbc.h"
#include "hfp_msbc.h"
#define MSBC_FRAME_SIZE 57

2
src/classic/hfp_msbc.h
View File

@ -48,8 +48,6 @@
#include <stdint.h>
#include "btstack_sbc_encoder.h"
#if defined __cplusplus
extern "C" {
#endif

44
src/classic/btstack_sbc_encoder.h → src/classic/sbc_decoder.h
View File

@ -36,40 +36,52 @@
*/
/*
* btstack_sbc_encoder.h
* sbc_decoder.h
*
*/
#ifndef __BTSTACK_SBC_ENCODER_H
#define __BTSTACK_SBC_ENCODER_H
#ifndef __SBC_DECODER_H
#define __SBC_DECODER_H
#include <stdint.h>
#include "btstack_sbc.h"
#include "btstack_sbc_plc.h"
#if defined __cplusplus
extern "C" {
#endif
typedef enum{
SBC_MODE_STANDARD,
SBC_MODE_mSBC
} sbc_mode_t;
typedef struct {
void * context;
void (*handle_pcm_data)(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context);
// private
void * encoder_state;
btstack_sbc_mode_t mode;
} btstack_sbc_encoder_state_t;
void * decoder_state;
sbc_plc_state_t plc_state;
sbc_mode_t mode;
void btstack_sbc_encoder_init(btstack_sbc_encoder_state_t * state, btstack_sbc_mode_t mode,
int blocks, int subbands, int allmethod, int sample_rate, int bitpool);
// summary of processed good, bad and zero frames
int good_frames_nr;
int bad_frames_nr;
int zero_frames_nr;
} sbc_decoder_state_t;
void btstack_sbc_encoder_process_data(int16_t * input_buffer);
void sbc_decoder_init(sbc_decoder_state_t * state, sbc_mode_t mode, void (*callback)(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context), void * context);
void sbc_decoder_process_data(sbc_decoder_state_t * state, uint8_t * buffer, int size);
int sbc_decoder_num_samples_per_frame(sbc_decoder_state_t * state);
int sbc_decoder_num_channels(sbc_decoder_state_t * state);
int sbc_decoder_sample_rate(sbc_decoder_state_t * state);
uint8_t * btstack_sbc_encoder_sbc_buffer(void);
uint16_t btstack_sbc_encoder_sbc_buffer_length(void);
int btstack_sbc_encoder_num_audio_samples(void);
void btstack_sbc_encoder_dump_context(void);
// testing only
void sbc_decoder_test_disable_plc(void);
void sbc_decoder_test_simulate_corrupt_frames(int period);
#if defined __cplusplus
}
#endif
#endif // __BTSTACK_SBC_ENCODER_H
#endif // __SBC_DECODER_H

8
test/sbc/Makefile
View File

@ -9,10 +9,10 @@ include ${SBC_ENCODER_ROOT}/Makefile.inc
SBC_DECODER += \
${BTSTACK_ROOT}/src/classic/btstack_sbc_plc.c \
${BTSTACK_ROOT}/src/classic/btstack_sbc_decoder_bludroid.c \
${BTSTACK_ROOT}/src/classic/btstack_sbc_bludroid.c \
SBC_ENCODER += \
${BTSTACK_ROOT}/src/classic/btstack_sbc_encoder_bludroid.c \
${BTSTACK_ROOT}/src/classic/btstack_sbc_bludroid.c \
${BTSTACK_ROOT}/src/classic/hfp_msbc.c \
SBC_DECODER_OBJ = $(SBC_DECODER:.c=.o)
@ -38,10 +38,10 @@ SBC_TESTS = sbc_decoder_test sbc_encoder_test
all: ${SBC_TESTS}
sbc_decoder_test: ${SBC_DECODER_OBJ} ${COMMON_OBJ} sbc_decoder_test.o
sbc_decoder_test: ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} ${COMMON_OBJ} sbc_decoder_test.o
${CC} $^ ${CFLAGS} ${LDFLAGS} -o $@
sbc_encoder_test: ${SBC_ENCODER_OBJ} ${COMMON_OBJ} sbc_encoder_test.o
sbc_encoder_test: ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} ${COMMON_OBJ} sbc_encoder_test.o
${CC} $^ ${CFLAGS} ${LDFLAGS} -o $@
test: all

2
test/sbc/sbc_decoder_test.c
View File

@ -53,7 +53,7 @@
#include "oi_assert.h"
#include "btstack.h"
#include "btstack_sbc_decoder.h"
#include "btstack_sbc.h"
static uint8_t read_buffer[24];

7
test/sbc/sbc_encoder_test.c
View File

@ -51,9 +51,9 @@
#include <unistd.h>
#include "btstack.h"
#include "btstack_sbc_encoder.h"
#include "hfp_msbc.h"
#include "hfp_msbc.h"
#include "btstack_sbc.h"
static int num_frames = 0;
@ -129,9 +129,6 @@ int main (int argc, const char * argv[]){
fwrite(output_buffer, 1, sizeof(output_buffer), sbc_fd);
}
}
btstack_sbc_encoder_dump_context();
printf("Done, frame count %d \n", num_frames);
close(wav_fd);