/*
* Copyright (C) 2014 BlueKitchen GmbH
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* 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
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*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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*/
// *****************************************************************************
//
// SBC decoder tests
//
// *****************************************************************************
#include "btstack_config.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include "oi_assert.h"
#include "btstack.h"
#include "btstack_sbc.h"
#include "wav_util.h"
#define PAKET_TYPE_SCO_OUT 8
#define PAKET_TYPE_SCO_IN 9
static int total_num_samples = 0;
static int frame_count = 0;
static void show_usage(void){
printf("\n\nUsage: ./pklg_msbc_test input_file \n");
printf("Example: ./pklg_msbc_test pklg/test1 \n");
}
static ssize_t __read(int fd, void *buf, size_t count){
ssize_t len, pos = 0;
while (count > 0) {
len = read(fd, (int8_t * )buf + pos, count);
if (len <= 0)
return pos;
count -= len;
pos += len;
}
return pos;
}
static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){
(void) context;
(void) sample_rate;
wav_writer_write_int16(num_samples*num_channels, data);
total_num_samples += num_samples*num_channels;
frame_count++;
}
static void process_file(const char * pklg_path, const char * wav_path, int packet_type, int plc_enabled){
printf("Processing %s -> %s: PLC enabled: %u, direction %s\n", pklg_path, wav_path, plc_enabled, packet_type == PAKET_TYPE_SCO_OUT ? "Out" : "In");
int oflags = O_RDONLY;
#ifdef _WIN32
oflags |= O_BINARY;
#endif
int fd = open(pklg_path, oflags);
if (fd < 0) {
printf("Can't open file %s", pklg_path);
return;
}
wav_writer_open(wav_path, 1, 16000);
total_num_samples = 0;
frame_count = 0;
btstack_sbc_mode_t mode = SBC_MODE_mSBC;
btstack_sbc_decoder_state_t state;
btstack_sbc_decoder_init(&state, mode, &handle_pcm_data, NULL);
btstack_sbc_decoder_test_set_plc_enabled(plc_enabled);
int sco_packet_counter = 0;
while (1){
int bytes_read;
// get next packet
uint8_t header[13];
bytes_read = __read(fd, header, sizeof(header));
if (0 >= bytes_read) break;
uint8_t type = header[12];
uint32_t size = big_endian_read_32(header, 0);
// auto-detect endianess of size param
if (size >0xffff){
size = little_endian_read_32(header, 0);
}
// subtract header
size -= 9;
uint8_t packet[300];
if (type == packet_type){
if (size > sizeof(packet) ){
printf("Error: size %d, packet counter %d \n", size, sco_packet_counter);
exit(10);
}
bytes_read = __read(fd, packet, size);
sco_packet_counter++;
btstack_sbc_decoder_process_data(&state, (packet[1] >> 4) & 3, packet+3, size-3);
} else {
// skip data
while (size){
int bytes_to_read = btstack_min(sizeof(packet), size);
__read(fd, packet, bytes_to_read);
size -= bytes_to_read;
}
}
}
wav_writer_close();
close(fd);
int good = state.good_frames_nr;
int bad = state.bad_frames_nr + state.zero_frames_nr;
int consecutive;
int total_frames_nr = good + bad;
printf("WAV Writer (SBC): Decoding done. Processed totaly %d frames:\n - %d good\n - %d bad\n", total_frames_nr, good, bad);
good = state.plc_state.good_frames_nr;
bad = state.plc_state.bad_frames_nr;
consecutive = state.plc_state.max_consecutive_bad_frames_nr;
total_frames_nr = good + bad;
printf("WAV Writer (PLC): Decoding done. Processed totaly %d frames:\n - %d good\n - %d bad\n - %d consecutive\n", total_frames_nr, good, bad, consecutive);
printf("Write %d frames to wav file: %s\n\n", frame_count, wav_path);
}
int main (int argc, const char * argv[]){
char wav_path[1000];
char pklg_path[1000];
if (argc < 2){
show_usage();
return -1;
}
int argv_pos = 1;
const char * filename = argv[argv_pos++];
#ifdef OCTAVE_OUTPUT
printf("OCTAVE OUTPUT active\n");
btstack_sbc_plc_octave_set_base_name(filename);
#endif
strcpy(pklg_path, filename);
strcat(pklg_path, ".pklg");
// in file, no plc
strcpy(wav_path, filename);
strcat(wav_path, "_in_raw.wav");
process_file(pklg_path, wav_path, PAKET_TYPE_SCO_IN, 0);
// in file, plc
strcpy(wav_path, filename);
strcat(wav_path, "_in_plc.wav");
process_file(pklg_path, wav_path, PAKET_TYPE_SCO_IN, 1);
// out file, no plc
strcpy(wav_path, filename);
strcat(wav_path, "_out.wav");
process_file(pklg_path, wav_path, PAKET_TYPE_SCO_OUT, 0);
}