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cpp example v5 model

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This commit is contained in:
Stefan Miletic
2024-07-01 15:04:48 +01:00
parent a395853982
commit 0b3d43d432
2 changed files with 134 additions and 405 deletions
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75
examples/cpp/wav.h
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@@ -16,6 +16,7 @@
#ifndef FRONTEND_WAV_H_
#define FRONTEND_WAV_H_
#include <iostream>
#include <assert.h>
#include <stdint.h>
#include <stdio.h>
@@ -59,7 +60,8 @@ class WavReader {
WavHeader header;
fread(&header, 1, sizeof(header), fp);
if (header.fmt_size < 16) {
printf("WaveData: expect PCM format data "
fprintf(stderr,
"WaveData: expect PCM format data "
"to have fmt chunk of at least size 16.\n");
return false;
} else if (header.fmt_size > 16) {
@@ -79,13 +81,6 @@ class WavReader {
fread(header.data, 8, sizeof(char), fp);
}
if (header.data_size == 0) {
int offset = ftell(fp);
fseek(fp, 0, SEEK_END);
header.data_size = ftell(fp) - offset;
fseek(fp, offset, SEEK_SET);
}
num_channel_ = header.channels;
sample_rate_ = header.sample_rate;
bits_per_sample_ = header.bit;
@@ -93,57 +88,33 @@ class WavReader {
data_ = new float[num_data]; // Create 1-dim array
num_samples_ = num_data / num_channel_;
std::cout << "num_channel_ :" << num_channel_ << std::endl;
std::cout << "sample_rate_ :" << sample_rate_ << std::endl;
std::cout << "bits_per_sample_:" << bits_per_sample_ << std::endl;
std::cout << "num_samples :" << num_data << std::endl;
std::cout << "num_data_size :" << header.data_size << std::endl;
switch (bits_per_sample_) {
for (int i = 0; i < num_data; ++i) {
switch (bits_per_sample_) {
case 8: {
char sample;
for (int i = 0; i < num_data; ++i) {
fread(&sample, 1, sizeof(char), fp);
data_[i] = static_cast<float>(sample) / 32768;
}
break;
char sample;
fread(&sample, 1, sizeof(char), fp);
data_[i] = static_cast<float>(sample);
break;
}
case 16: {
int16_t sample;
for (int i = 0; i < num_data; ++i) {
fread(&sample, 1, sizeof(int16_t), fp);
data_[i] = static_cast<float>(sample) / 32768;
}
break;
int16_t sample;
fread(&sample, 1, sizeof(int16_t), fp);
// std::cout << sample;
data_[i] = static_cast<float>(sample);
// std::cout << data_[i];
break;
}
case 32:
{
if (header.format == 1) //S32
{
int sample;
for (int i = 0; i < num_data; ++i) {
fread(&sample, 1, sizeof(int), fp);
data_[i] = static_cast<float>(sample) / 32768;
}
}
else if (header.format == 3) // IEEE-float
{
float sample;
for (int i = 0; i < num_data; ++i) {
fread(&sample, 1, sizeof(float), fp);
data_[i] = static_cast<float>(sample);
}
}
else {
printf("unsupported quantization bits\n");
}
break;
case 32: {
int sample;
fread(&sample, 1, sizeof(int), fp);
data_[i] = static_cast<float>(sample);
break;
}
default:
printf("unsupported quantization bits\n");
break;
fprintf(stderr, "unsupported quantization bits");
exit(1);
}
}
fclose(fp);
return true;
}