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freeswitch/libs/broadvoice/tests/broadvoice_tests.c

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/*
* broadvoice - a library for the BroadVoice 16 and 32 codecs
*
* broadvoice_tests.c
*
* Copyright 2008-2009 Steve Underwood <steveu@coppice.org>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1,
* as published by the Free Software Foundation.
*
* This program 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 program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: broadvoice_tests.c,v 1.2 2009/11/20 13:12:23 steveu Exp $
*/
/*! \file */
/*! \page broadvoice_tests_page BroadVoice 16 and 32 codec tests
\section broadvoice_tests_page_sec_1 What does it do?
\section broadvoice_tests_page_sec_2 How is it used?
*/
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#include <inttypes.h>
#include <stdio.h>
#include <string.h>
#include <audiofile.h>
#define BROADVOICE_EXPOSE_INTERNAL_STRUCTURES
#include <broadvoice.h>
#include "timing.h"
#include "g192_bit_stream.h"
#define MAX_FRAME_SIZE 80
#define MAX_BITS_PER_FRAME 160
typedef struct
{
int encode;
int encoded_format;
int bit_rate;
int sample_rate;
int number_of_bits_per_frame;
int frame_size;
char *source_file;
char *dest_file;
FILE *fp;
FILE *fp_bitstream;
} coder_control_t;
static int encode_test(coder_control_t *control, int frames)
{
bv16_encode_state_t encode_state_16;
bv16_encode_state_t *s16;
bv32_encode_state_t encode_state_32;
bv32_encode_state_t *s32;
int16_t amp[frames*MAX_FRAME_SIZE];
uint8_t bv_code[frames*MAX_BITS_PER_FRAME/8];
int samples;
int padded_samples;
int frame_cnt;
int bytes;
int actual_frames;
int i;
int64_t start;
int64_t end;
int64_t total;
if ((control->fp = fopen(control->source_file, "rb")) == NULL)
{
printf("Error opening %s.\n", control->source_file);
exit(1);
}
if ((control->fp_bitstream = fopen(control->dest_file, "wb")) == NULL)
{
printf("Error opening %s.\n", control->dest_file);
exit(1);
}
s16 = NULL;
s32 = NULL;
if (control->bit_rate == 16000)
{
if ((s16 = bv16_encode_init(&encode_state_16)) == NULL)
{
printf("Failed to initialise the encoder.\n");
exit(2);
}
}
else
{
if ((s32 = bv32_encode_init(&encode_state_32)) == NULL)
{
printf("Failed to initialise the encoder.\n");
exit(2);
}
}
frame_cnt = 0;
total = 0;
for (;;)
{
samples = fread(amp, sizeof(int16_t), frames*control->frame_size, control->fp);
if (samples <= 0)
break;
if (samples%control->frame_size != 0)
{
padded_samples = samples - samples%control->frame_size + control->frame_size;
/* Pad this fractional frame out to a full one with silence */
for (i = samples; i < padded_samples; i++)
amp[i] = 0;
samples = padded_samples;
}
actual_frames = samples/control->frame_size;
start = rdtscll();
if (control->bit_rate == 16000)
bytes = bv16_encode(s16, bv_code, amp, samples);
else
bytes = bv32_encode(s32, bv_code, amp, samples);
end = rdtscll();
frame_cnt += actual_frames;
/* Write output bitstream to the output file */
for (i = 0; i < actual_frames; i++)
itu_codec_bitstream_write(&bv_code[i*bytes/actual_frames], 8*bytes/actual_frames, control->encoded_format, control->fp_bitstream);
total += (end - start);
}
fclose(control->fp);
fclose(control->fp_bitstream);
printf("%d frames encoded\n", frame_cnt);
if (frame_cnt == 0)
frame_cnt = 1;
printf("%" PRId64 " cycles. %" PRId64 " per frame\n", total, total/frame_cnt);
return 0;
}
/*- End of function --------------------------------------------------------*/
static int decode_test(coder_control_t *control, int frames)
{
bv16_decode_state_t decode_state_16;
bv16_decode_state_t *s16;
bv32_decode_state_t decode_state_32;
bv32_decode_state_t *s32;
int16_t amp[frames*MAX_FRAME_SIZE];
uint8_t bv_code[frames*MAX_BITS_PER_FRAME/8];
int bytes;
int samples;
int frame_cnt;
int number_of_bytes_per_frame;
int actual_frames;
int i;
int j;
int k;
int n;
int16_t frame_error_flag;
int64_t start;
int64_t end;
int64_t total;
if ((control->fp_bitstream = fopen(control->source_file, "rb")) == NULL)
{
printf("Error opening %s.\n", control->source_file);
exit(1);
}
if ((control->fp = fopen(control->dest_file, "wb")) == NULL)
{
printf("Error opening %s.\n", control->dest_file);
exit(1);
}
number_of_bytes_per_frame = control->number_of_bits_per_frame/8;
s16 = NULL;
s32 = NULL;
if (control->bit_rate == 16000)
{
if ((s16 = bv16_decode_init(&decode_state_16)) == NULL)
{
printf("Failed to initialise the decoder.\n");
exit(2);
}
}
else
{
if ((s32 = bv32_decode_init(&decode_state_32)) == NULL)
{
printf("Failed to initialise the decoder.\n");
exit(2);
}
}
frame_cnt = 0;
total = 0;
frame_error_flag = 0;
n = 0;
for (;;)
{
for (actual_frames = 0, bytes = 0, i = 0; i < frames; i++)
{
n = itu_codec_bitstream_read(&bv_code[i*number_of_bytes_per_frame],
&frame_error_flag,
number_of_bytes_per_frame*8,
control->encoded_format,
control->fp_bitstream)/8;
bytes += n;
if (n == number_of_bytes_per_frame)
actual_frames++;
if (frame_error_flag || n != number_of_bytes_per_frame)
break;
}
if (frame_error_flag || bytes >= number_of_bytes_per_frame)
{
if (frame_error_flag)
{
samples = 0;
if (actual_frames > 0)
{
start = rdtscll();
if (control->bit_rate == 16000)
samples = bv16_decode(s16, amp, bv_code, bytes - number_of_bytes_per_frame);
else
samples = bv32_decode(s32, amp, bv_code, bytes - number_of_bytes_per_frame);
end = rdtscll();
total += (end - start);
}
j = bytes - number_of_bytes_per_frame;
if (j < 0)
j = 0;
k = (actual_frames - 1)*control->frame_size;
if (k < 0)
k = 0;
#if 0
if (control->bit_rate == 16000)
samples += bv16_fillin(s16, &amp[k], &bv_code[j], number_of_bytes_per_frame);
else
samples += bv32_fillin(s32, &amp[k], &bv_code[j], number_of_bytes_per_frame);
#else
if (control->bit_rate == 16000)
samples += bv16_fillin(s16, &amp[k], number_of_bytes_per_frame);
else
samples += bv32_fillin(s32, &amp[k], number_of_bytes_per_frame);
#endif
}
else
{
start = rdtscll();
if (control->bit_rate == 16000)
samples = bv16_decode(s16, amp, bv_code, bytes);
else
samples = bv32_decode(s32, amp, bv_code, bytes);
end = rdtscll();
total += (end - start);
}
frame_cnt += actual_frames;
/* For ITU testing, chop off the 2 LSBs. */
//for (i = 0; i < samples; i++)
// amp[i] &= 0xFFFC;
/* Write frame of output samples */
fwrite(amp, sizeof(int16_t), samples, control->fp);
}
if (!frame_error_flag && n != number_of_bytes_per_frame)
break;
}
fclose(control->fp);
fclose(control->fp_bitstream);
printf("%d frames decoded\n", frame_cnt);
if (frame_cnt == 0)
frame_cnt = 1;
printf("%" PRId64 " cycles. %" PRId64 " per frame\n", total, total/frame_cnt);
return 0;
}
/*- End of function --------------------------------------------------------*/
static void parse_command_line(char *argv[], coder_control_t *control)
{
control->encode = (strcasecmp(*++argv, "e") == 0);
if (strcasecmp(*++argv, "p") == 0)
{
control->encoded_format = ITU_CODEC_BITSTREAM_PACKED;
printf("Encoding format = packed bitstream\n");
}
else if (strcasecmp(*argv, "i") == 0)
{
control->encoded_format = ITU_CODEC_BITSTREAM_G192;
printf("Encoding format = ITU G.192 format bitstream\n");
}
else
{
printf("Error. Encoded format must be P for packed, or I for ITU format\n");
exit(1);
}
control->bit_rate = (int32_t) atoi(*++argv);
control->number_of_bits_per_frame = (int16_t) (control->bit_rate/200);
control->sample_rate = (control->bit_rate == 16000) ? 8000 : 16000;
if (control->sample_rate == 8000)
{
control->frame_size = MAX_FRAME_SIZE >> 1;
printf("Sample rate = 8000 (BroadVoice16, 3.4kHz bandwidth)\n");
}
else if (control->sample_rate == 16000)
{
control->frame_size = MAX_FRAME_SIZE;
printf("Sample rate = 16000 (BroadVoice32, 7.1kHz bandwidth)\n");
}
else
{
printf("Error. Sample rate must be 8000 or 16000\n");
exit(1);
}
control->source_file = *++argv;
control->dest_file = *++argv;
printf("Bit rate = %d\n", control->bit_rate);
printf("Framesize = %d samples\n", control->frame_size);
printf("Number of bits per frame = %d bits\n", control->number_of_bits_per_frame);
printf("\n");
printf("\n");
}
/*- End of function --------------------------------------------------------*/
int main(int argc, char *argv[])
{
coder_control_t control;
/* Check usage */
if (argc < 6)
{
printf("Usage: %s <E/D> <P(packed)/I(ITU)> <bit rate> <input-file> <output-file>\n\n", argv[0]);
printf("Sample rate: 3.5kHz = 8000\n");
printf(" 7.1kHz = 16000\n");
printf("\n");
exit(1);
}
parse_command_line(argv, &control);
if (control.encode)
encode_test(&control, 4);
else
decode_test(&control, 4);
return 0;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/
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