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/*
$Id: stream_provider_raw.cpp,v 1.3 2001/12/11 20:44:24 mbn Exp $
------------------------------------------------------------------------
ClanLib, the platform independent game SDK.
This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
version 2. See COPYING for details.
For a total list of contributers see CREDITS.
------------------------------------------------------------------------
File purpose:
Streamed sample
*/
#ifdef WIN32
#pragma warning (disable:4786)
#endif
#include "API/Core/System/cl_assert.h"
#include "API/Core/IOData/inputsource.h"
#include "API/Core/IOData/inputsource_provider.h"
#include "API/Sound/SoundProviders/stream_provider_raw.h"
/*****************************
CL_Streamed_RawSample
*****************************/
CL_SoundBuffer *CL_Streamed_RawSample::create(
const std::string &filename,
SoundFormat format,
int frequency,
CL_InputSourceProvider *inputprovider,
bool looped)
{
return CL_SoundBuffer::create(
new CL_Streamed_RawSample(
filename,
format,
frequency,
inputprovider,
looped),
true);
}
CL_Streamed_RawSample::CL_Streamed_RawSample(
const std::string &_filename,
SoundFormat _format,
int _frequency,
CL_InputSourceProvider *_inputprovider,
bool _looped)
{
filename = _filename;
looped = _looped;
format = _format;
frequency = _frequency;
if (_inputprovider == NULL)
{
inputprovider = CL_InputSourceProvider::create_file_provider(".");
}
else
{
inputprovider = _inputprovider->clone();
}
}
CL_Streamed_RawSample::~CL_Streamed_RawSample()
{
delete inputprovider;
}
CL_StreamSoundProvider_Session *CL_Streamed_RawSample::begin_session()
{
return new CL_Streamed_RawSample_Session(
inputprovider->open_source(filename.c_str()),
format,
frequency,
looped);
}
void CL_Streamed_RawSample::end_session(CL_StreamSoundProvider_Session *session)
{
delete session;
}
/********************************
CL_Streamed_RawSample_Session
********************************/
CL_Streamed_RawSample_Session::CL_Streamed_RawSample_Session(
CL_InputSource *_input,
SoundFormat _format,
int _frequency,
bool _looped)
{
input = _input;
looped = _looped;
cl_assert(input != NULL);
sample_size = input->size();
sample_freq = _frequency;
sample_format = _format;
sample_left = sample_size;
}
CL_Streamed_RawSample_Session::~CL_Streamed_RawSample_Session()
{
delete input;
}
bool CL_Streamed_RawSample_Session::eof() const
{
if (sample_left <= 0 && !looped) return true;
return false;
}
int CL_Streamed_RawSample_Session::get_data(void *data_ptr, int data_requested)
{
if (sample_left <= 0)
{
if (looped)
{
sample_left = sample_size;
input->seek(0, CL_InputSource::seek_set);
}
else
{
return 0;
}
}
if (looped)
{
if (data_requested > sample_left)
{
int pos = 0;
while (data_requested > 0)
{
input->read(&((unsigned char *) data_ptr)[pos], sample_left);
if (get_format() == sf_8bit_signed)
{
for (int i=0;i<sample_left;i++)
{
((unsigned char *) data_ptr)[pos+i] = char(short(((unsigned char *) data_ptr)[pos+i])+128);
}
}
data_requested -= sample_left;
pos += sample_left;
input->seek(0, CL_InputSource::seek_set);
int bytes_read = input->read(&((unsigned char *)data_ptr)[pos], data_requested);
data_requested -= bytes_read;
if (get_format() == sf_8bit_signed)
{
for (int i=0;i<bytes_read;i++)
{
((unsigned char *) data_ptr)[pos+i] = char(short(((unsigned char *) data_ptr)[pos+i])+128);
}
}
pos += bytes_read;
sample_left = sample_size - bytes_read;
}
return data_requested;
}
else
{
sample_left -= data_requested;
int read = input->read(data_ptr, data_requested);
if (get_format() == sf_8bit_signed)
{
for (int i=0;i<read;i++)
{
((unsigned char *) data_ptr)[i] = char(short(((unsigned char *) data_ptr)[i])+128);
}
}
return read;
}
}
else
{
sample_left -= data_requested;
if (sample_left < 0)
{
data_requested += sample_left;
}
int read = input->read(data_ptr, data_requested);
if (get_format() == sf_8bit_signed)
{
for (int i=0;i<read;i++)
{
((unsigned char *) data_ptr)[i] = char(short(((unsigned char *) data_ptr)[i])+128);
}
}
return read;
}
}
int CL_Streamed_RawSample_Session::get_frequency() const
{
return sample_freq;
}
SoundFormat CL_Streamed_RawSample_Session::get_format() const
{
return sample_format;
}
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