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#include <functional>
#include <memory>
#include <cerrno>
#include <algorithm>
#include <string>
#include <sys/stat.h>
#include <string.h>
#include "wav.h"
#include "pcmengin.h"
static int fileext_to_libsndfmt(const std::string& filename) {
int fmt = SF_FORMAT_WAV; //default fmt
if (filename == "-")
return SF_FORMAT_AU;
size_t pos = filename.find_last_of(".");
if (pos == std::string::npos || pos == filename.size() - 1) //no dot or filename.
return fmt;
std::string ext = filename.substr(pos+1);
std::transform(ext.begin(), ext.end(), ext.begin(), ::toupper);
if (ext == "AU") {
fmt = SF_FORMAT_AU;
} else if (ext == "AIFF") {
fmt = SF_FORMAT_AIFF;
} else if (ext == "PCM" || ext == "RAW") {
fmt = SF_FORMAT_RAW;
}
return fmt;
}
TWav::TWav(const std::string& filename)
: File(SndfileHandle(filename)) {
//disable scaling short -> [-1.0, 1.0]
File.command(SFC_SET_NORM_DOUBLE /*| SFC_SET_NORM_FLOAT*/, nullptr, SF_FALSE);
}
TWav::TWav(const std::string& filename, int channels, int sampleRate)
: File(SndfileHandle(filename, SFM_WRITE, fileext_to_libsndfmt(filename) | SF_FORMAT_PCM_16, channels, sampleRate)) {
//disable scaling short -> [-1.0, 1.0]
File.command(SFC_SET_NORM_DOUBLE /*| SFC_SET_NORM_FLOAT*/, nullptr, SF_FALSE);
}
TWav::~TWav() {
}
uint64_t TWav::GetTotalSamples() const {
return File.frames();
}
uint32_t TWav::GetChannelNum() const {
return File.channels();
}
uint32_t TWav::GetSampleRate() const {
return File.samplerate();
}
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