int file32_write(const string& name, const void* s, int cb_s)
{
Cfile32 f;
if (int error = f.open_write(name))
return error;
return f.write(s, cb_s);
}
int Caud_file::extract_as_wav(const string& name)
{
Cvirtual_binary d = decode();
if (!d.data())
return 1;
Cfile32 f;
int error = f.open(name, GENERIC_WRITE);
if (error)
return error;
int cb_sample = get_cb_sample();
int cs_remaining = get_c_samples();
t_wav_header header;
memset(&header, 0, sizeof(t_wav_header));
header.file_header.id = wav_file_id;
header.file_header.size = sizeof(header) - sizeof(header.file_header) + (cs_remaining << 1);
header.form_type = wav_form_id;
header.format_chunk.header.id = wav_format_id;
header.format_chunk.header.size = sizeof(header.format_chunk) - sizeof(header.format_chunk.header);
header.format_chunk.formattag = 1;
header.format_chunk.c_channels = 1;
header.format_chunk.samplerate = get_samplerate();
header.format_chunk.byterate = cb_sample * get_samplerate();
header.format_chunk.blockalign = cb_sample;
header.format_chunk.cbits_sample = cb_sample << 3;
header.data_chunk_header.id = wav_data_id;
header.data_chunk_header.size = cb_sample * cs_remaining;
error = f.write(&header, sizeof(t_wav_header));
return error ? error : f.write(d);
}
int Cvirtual_file::save(const string& fname) const
{
Cfile32 f;
int error = f.open_write(fname);
if (!error)
{
for (auto& i : m_data)
error = f.write(i);
}
return error;
}
static int copy_block(Cfile32& s, int s_p, Cfile32& d, int d_p, int size)
{
Cvirtual_binary buffer;
while (size)
{
int cb_buffer = min(size, 4 << 20);
s.seek(s_p);
if (int e = s.read(buffer.write_start(cb_buffer), cb_buffer))
return e;
d.seek(d_p);
if (int e = d.write(buffer.data(), cb_buffer))
return e;
s_p += cb_buffer;
d_p += cb_buffer;
size -= cb_buffer;
}
return 0;
}
Cvirtual_binary file32_read(const string& name)
{
Cfile32 f;
return f.open_read(name) ? Cvirtual_binary() : f.get_mm();
}