xref: /btstack/test/hfp/pklg_cvsd_test.c (revision 8e95b336b35b7422b465910e60e880082c28d615)

/*
 * 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
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 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * Please inquire about commercial licensing options at
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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 "btstack.h"
#include "btstack_cvsd_plc.h"

#include "wav_util.h"

#define BYTES_PER_FRAME 2

#define PAKET_TYPE_SCO_OUT 8
#define PAKET_TYPE_SCO_IN  9

static btstack_cvsd_plc_state_t plc_state;

static void show_usage(void){
    printf("\n\nUsage: ./pklg_cvsd_test input_file\n");
    printf("Example: ./pklg_cvsd_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 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 fd = open(pklg_path, O_RDONLY);
    if (fd < 0) {
        printf("Can't open file %s", pklg_path);
        return;
    }

    wav_writer_open(wav_path, 1, 8000);

    btstack_cvsd_plc_init(&plc_state);

    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 packet[256];
        uint32_t size = big_endian_read_32(header, 0) - 9;
        bytes_read = __read(fd, packet, size);

        uint8_t type = header[12];

        if (type != packet_type) continue;

        sco_packet_counter++;

        int16_t audio_frame_out[128];    //

        if (size > sizeof(audio_frame_out)){
            printf("sco_demo_receive_CVSD: SCO packet larger than local output buffer - dropping data.\n");
            break;
        }

        const int audio_bytes_read = size - 3;
        const int num_samples = audio_bytes_read / BYTES_PER_FRAME;

        // check SCO handle -- quick hack, not correct if handle 0x0000 is actually used for SCO
        uint16_t sco_handle = little_endian_read_16(packet, 0) & 0xfff;
        if (sco_handle == 0) continue;

        // convert into host endian
        int16_t audio_frame_in[128];
        int i;
        for (i=0;i<num_samples;i++){
            audio_frame_in[i] = little_endian_read_16(packet, 3 + i * 2);
        }

        if (plc_enabled){
            btstack_cvsd_plc_process_data(&plc_state, audio_frame_in, num_samples, audio_frame_out);
        } else {
            memcpy(audio_frame_out, audio_frame_in, audio_bytes_read);
        }

        wav_writer_write_int16(num_samples, audio_frame_out);
    }

    wav_writer_close();
    close(fd);

    btstack_cvsd_dump_statistics(&plc_state);
}

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++];

    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);
}