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freeswitch/libs/libg722_1/tests/g722_1_tests.c
Steve Underwood 5d5485708d A bunch of tweaks to the G.722.1 codec
2010-12-26 13:25:03 +08:00

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/*
* g722_1 - a library for the G.722.1 and Annex C codecs
*
* g722_1_tests.c
*
* Adapted by Steve Underwood <steveu@coppice.org> from the reference
* code supplied with ITU G.722.1, which is:
*
* (C) 2004 Polycom, Inc.
* All rights reserved.
*
* 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.
*/
/*! \file */
/*! \page g722_1_tests_page G.722.1 codec tests
\section g722_1_tests_page_sec_1 What does it do?
\section g722_1_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>
#include <g722_1.h>
#include "timing.h"
#include "g192_bit_stream.h"
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)
{
g722_1_encode_state_t encode_state;
g722_1_encode_state_t *s;
int16_t amp[frames*MAX_FRAME_SIZE];
uint8_t g722_1_code[frames*MAX_BITS_PER_FRAME/8];
int 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);
}
if ((s = g722_1_encode_init(&encode_state, control->bit_rate, control->sample_rate)) == 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 < control->frame_size)
break;
actual_frames = samples/control->frame_size;
start = rdtscll();
bytes = g722_1_encode(s, g722_1_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(&g722_1_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)
{
g722_1_decode_state_t decode_state;
g722_1_decode_state_t *s;
int16_t amp[frames*MAX_DCT_LENGTH];
uint8_t g722_1_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;
if ((s = g722_1_decode_init(&decode_state, control->bit_rate, control->sample_rate)) == 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(&g722_1_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();
samples = g722_1_decode(s, amp, g722_1_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;
samples += g722_1_fillin(s, &amp[k], &g722_1_code[j], number_of_bytes_per_frame);
}
else
{
start = rdtscll();
samples = g722_1_decode(s, amp, g722_1_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-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)/50);
control->sample_rate = (int16_t) atoi(*++argv);
if (control->sample_rate == 16000)
{
control->frame_size = MAX_FRAME_SIZE >> 1;
printf("Sample rate = 16000 (G.722.1, 7kHz bandwidth)\n");
}
else if (control->sample_rate == 32000)
{
control->frame_size = MAX_FRAME_SIZE;
printf("Sample rate = 32000 (G.722.1 Annex C, 14kHz bandwidth)\n");
}
else
{
printf("Error. Sample rate must be 16000 or 32000\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 < 7)
{
printf("Usage: %s <E/D> <P(packed)/I(ITU)> <bit-rate> <sample rate> <input-file> <output-file>\n\n", argv[0]);
printf("Valid Rates: 24kbps = 24000\n");
printf(" 32kbps = 32000\n");
printf(" 48kbps = 48000\n");
printf("\n");
printf("Sample rate: 7kHz = 16000\n");
printf(" 14kHz = 32000\n");
printf("\n");
exit(1);
}
parse_command_line(argv, &control);
if (control.encode)
encode_test(&control, 2);
else
decode_test(&control, 2);
return 0;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/
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