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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_mikmod_session.h"
#include "soundprovider_mikmod_generic.h"
#include "module_reader.h"
#include "API/Sound/soundformat.h"
#include "API/Core/IOData/inputsource.h"
#include "API/Core/IOData/inputsource_provider.h"
#include "API/Core/System/error.h"
#include <cstring>
/////////////////////////////////////////////////////////////////////////////
// CL_SoundProvider_MikMod_Session construction:
CL_SoundProvider_MikMod_Session::CL_SoundProvider_MikMod_Session(CL_SoundProvider_MikMod_Generic *data) :
data(data), num_samples(0), position(0)
{
CL_InputSource *source = data->provider->open_source(data->filename);
MREADER *reader = new_clanlib_reader((void *) source);
if (reader == 0) throw CL_Error("new_clanlib_reader failed!");
module = Player_LoadGeneric(reader,CLANLIB_READER_CHANNELS,0);
if (module == 0)
{
delete_clanlib_reader(reader);
delete source;
throw CL_Error(MikMod_strerror(MikMod_errno));
}
module->wrap = false;
module->loop = false;
module->fadeout = true;
delete_clanlib_reader(reader);
delete source;
frequency = md_mixfreq;
format = (md_mode & DMODE_16BITS) ? sf_16bit_signed : sf_8bit_signed;
num_channels = (md_mode&DMODE_STEREO) ? 2 : 1;
}
CL_SoundProvider_MikMod_Session::~CL_SoundProvider_MikMod_Session()
{
Player_Stop();
// Player_Free(module); -- this crashes for some weird reason, help! -- mbn 23. april 2003
}
/////////////////////////////////////////////////////////////////////////////
// CL_SoundProvider_MikMod_Session attributes:
int CL_SoundProvider_MikMod_Session::get_num_samples() const
{
return num_samples;
}
int CL_SoundProvider_MikMod_Session::get_frequency() const
{
return frequency;
}
CL_SoundFormat CL_SoundProvider_MikMod_Session::get_format() const
{
return format;
}
int CL_SoundProvider_MikMod_Session::get_num_channels() const
{
return num_channels;
}
int CL_SoundProvider_MikMod_Session::get_position() const
{
return position;
}
/////////////////////////////////////////////////////////////////////////////
// CL_SoundProvider_MikMod_Session operations:
bool CL_SoundProvider_MikMod_Session::set_looping(bool loop)
{
module->wrap = loop;
module->loop = loop;
return true;
}
bool CL_SoundProvider_MikMod_Session::eof() const
{
return !Player_Active();
}
void CL_SoundProvider_MikMod_Session::stop()
{
Player_Stop();
}
bool CL_SoundProvider_MikMod_Session::play()
{
Player_Start (module);
return true;
}
bool CL_SoundProvider_MikMod_Session::set_position(int pos)
{
Player_SetPosition(pos);
position = pos;
if (num_samples < position) num_samples = position;
return true;
}
int CL_SoundProvider_MikMod_Session::get_data(void **data_ptr, int data_requested)
{
int total_written = 0;
int bytes_per_sample = (format == sf_16bit_signed) ? 2 : 1;
bytes_per_sample *= num_channels;
while (data_requested > 0)
{
MikMod_Update();
int written = VC_WriteBytes(buffer, ((data_requested > 16*1024) ? 16*1024 : data_requested) * bytes_per_sample);
written /= bytes_per_sample;
if (format == sf_16bit_signed)
{
short **channels = (short **) data_ptr;
if (num_channels == 2)
{
short *src = (short *) buffer;
for (int i=0; i<written; i++)
{
channels[0][i+total_written] = *(src++);
channels[1][i+total_written] = *(src++);
}
}
else
{
memcpy(channels[0]+total_written, buffer, written*2);
}
}
else if (format == sf_8bit_signed)
{
char **channels = (char **) data_ptr;
if (num_channels == 2)
{
char *src = (char *) buffer;
for (int i=0; i<written; i++)
{
channels[0][i+total_written] = *(src++);
channels[1][i+total_written] = *(src++);
}
}
else
{
memcpy(channels[0]+total_written, buffer, written);
}
}
position += written;
total_written += written;
data_requested -= written;
// Check if we reached the end of the song:
if (module->sngpos >= module->numpos)
{
stop();
break;
}
// If no more bytes to write from input stream:
// (This never happens with this version of mikmod, but its a good check anyway)
if (written < 16*1024) break;
}
if (num_samples < position) num_samples = position;
return total_written;
}
/////////////////////////////////////////////////////////////////////////////
// CL_SoundProvider_MikMod_Session implementation:
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