117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
//=============================================================================
|
|
// MuseScore
|
|
// Music Composition & Notation
|
|
//
|
|
// Copyright (C) 2007-2011 Werner Schweer
|
|
//
|
|
// This program is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License version 2
|
|
// as published by the Free Software Foundation and appearing in
|
|
// the file LICENCE.GPL
|
|
//=============================================================================
|
|
|
|
#include "audiofile.h"
|
|
|
|
static sf_count_t getFileLen(void* f) {
|
|
return ((AudioFile*)f)->getFileLen();
|
|
}
|
|
static sf_count_t seek(sf_count_t offset, int whence, void* f) {
|
|
return ((AudioFile*)f)->seek(offset, whence);
|
|
}
|
|
static sf_count_t read(void* ptr, sf_count_t count, void* f) {
|
|
return ((AudioFile*)f)->read(ptr, count);
|
|
}
|
|
static sf_count_t write(const void* ptr, sf_count_t count, void* f) {
|
|
return ((AudioFile*)f)->write(ptr, count);
|
|
}
|
|
static sf_count_t tell(void* f) {
|
|
return ((AudioFile*)f)->tell();
|
|
}
|
|
|
|
static SF_VIRTUAL_IO sfio = {
|
|
getFileLen,
|
|
seek,
|
|
read,
|
|
write,
|
|
tell
|
|
};
|
|
|
|
//---------------------------------------------------------
|
|
// AudioFile
|
|
//---------------------------------------------------------
|
|
|
|
AudioFile::AudioFile()
|
|
{
|
|
memset(&info, 0, sizeof(info));
|
|
sf = 0;
|
|
}
|
|
|
|
AudioFile::~AudioFile()
|
|
{
|
|
if (sf)
|
|
sf_close(sf);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// open
|
|
//---------------------------------------------------------
|
|
|
|
bool AudioFile::open(const QByteArray& b)
|
|
{
|
|
buf = b;
|
|
idx = 0;
|
|
sf = sf_open_virtual(&sfio, SFM_READ, &info, this);
|
|
return sf != 0;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// read
|
|
//---------------------------------------------------------
|
|
|
|
int AudioFile::read(short* data, int frames)
|
|
{
|
|
return sf_readf_short(sf, data, frames);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// seek
|
|
//---------------------------------------------------------
|
|
|
|
sf_count_t AudioFile::seek(sf_count_t offset, int whence)
|
|
{
|
|
switch(whence) {
|
|
case SEEK_SET:
|
|
idx = offset;
|
|
break;
|
|
case SEEK_CUR:
|
|
idx += offset;
|
|
break;
|
|
case SEEK_END:
|
|
idx = buf.size() + offset;
|
|
break;
|
|
}
|
|
return idx;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// read
|
|
//---------------------------------------------------------
|
|
|
|
sf_count_t AudioFile::read(void* ptr, sf_count_t count)
|
|
{
|
|
count = qMin(count, (sf_count_t)(buf.size() - idx));
|
|
memcpy(ptr, buf.data() + idx, count);
|
|
idx += count;
|
|
return count;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// write
|
|
//---------------------------------------------------------
|
|
|
|
sf_count_t AudioFile::write(const void* /*ptr*/, sf_count_t /*count*/)
|
|
{
|
|
printf("write\n");
|
|
return 0;
|
|
}
|
|
|