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/*
** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Magnus Norddahl
** (if your name is missing here, please add it)
*/
#include "Sound/precomp.h"
#include "soundprovider_wave_session.h"
#include "soundprovider_wave_generic.h"
#include "API/Sound/soundformat.h"
#include <cstring>
/////////////////////////////////////////////////////////////////////////////
// CL_SoundProvider_Wave_Session construction:
CL_SoundProvider_Wave_Session::CL_SoundProvider_Wave_Session(CL_SoundProvider_Wave_Generic *data) :
data(data), position(0)
{
}
CL_SoundProvider_Wave_Session::~CL_SoundProvider_Wave_Session()
{
}
/////////////////////////////////////////////////////////////////////////////
// CL_SoundProvider_Wave_Session attributes:
int CL_SoundProvider_Wave_Session::get_num_samples() const
{
return data->num_samples;
}
int CL_SoundProvider_Wave_Session::get_frequency() const
{
return data->frequency;
}
CL_SoundFormat CL_SoundProvider_Wave_Session::get_format() const
{
return data->format;
}
int CL_SoundProvider_Wave_Session::get_num_channels() const
{
return data->num_channels;
}
int CL_SoundProvider_Wave_Session::get_position() const
{
return position;
}
/////////////////////////////////////////////////////////////////////////////
// CL_SoundProvider_Wave_Session operations:
bool CL_SoundProvider_Wave_Session::eof() const
{
return (position >= get_num_samples());
}
void CL_SoundProvider_Wave_Session::stop()
{
}
bool CL_SoundProvider_Wave_Session::play()
{
return true;
}
bool CL_SoundProvider_Wave_Session::set_position(int pos)
{
position = pos;
return true;
}
int CL_SoundProvider_Wave_Session::get_data(void **data_ptr, int data_requested)
{
int num_samples = get_num_samples();
if (position + data_requested > num_samples)
{
data_requested = num_samples - position;
if (data_requested < 0) return 0;
}
if (data->format == sf_16bit_signed)
{
short **channels = (short **) data_ptr;
if (data->num_channels == 2)
{
short *src = (short *) data->data + position * 2;
for (int i=0; i<data_requested; i++)
{
channels[0][i] = *(src++);
channels[1][i] = *(src++);
}
}
else
{
memcpy(channels[0], data->data+position*2, data_requested*2);
}
}
else if (data->format == sf_8bit_signed)
{
char **channels = (char **) data_ptr;
if (data->num_channels == 2)
{
char *src = (char *) data->data + position * 2;
for (int i=0; i<data_requested; i++)
{
channels[0][i] = *(src++);
channels[1][i] = *(src++);
}
}
else
{
memcpy(channels[0], data->data+position, data_requested);
}
}
position += data_requested;
return data_requested;
}
/////////////////////////////////////////////////////////////////////////////
// CL_SoundProvider_Wave_Session implementation:
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