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// Copyright (C) 2003--2004 Ronan Collobert (collober@idiap.ch)
//
// This file is part of Torch 3.1.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. The name of the author may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "IOMulti.h"
namespace Torch {
IOMulti::IOMulti(IOSequence **io_files_, int n_files_)
{
io_files = io_files_;
n_files = n_files_;
if(n_files <= 0)
error("IOMulti: check the number of files!");
n_sequences = 0;
for(int i = 0; i < n_files; i++)
n_sequences += io_files[i]->n_sequences;
frame_size = io_files[0]->frame_size;
indices = (int *)allocator->alloc(sizeof(int)*n_sequences);
offsets = (int *)allocator->alloc(sizeof(int)*n_sequences);
int *ptr_indices = indices;
int *ptr_offsets = offsets;
for(int i = 0; i < n_files; i++)
{
if(frame_size != io_files[i]->frame_size)
error("IOMulti: provided IO have incompatible frame sizes");
for(int j = 0; j < io_files[i]->n_sequences; j++)
{
*ptr_indices++ = i;
*ptr_offsets++ = j;
}
}
}
void IOMulti::getSequence(int t, Sequence *sequence)
{
io_files[indices[t]]->getSequence(offsets[t], sequence);
}
int IOMulti::getNumberOfFrames(int t)
{
return io_files[indices[t]]->getNumberOfFrames(offsets[t]);
}
int IOMulti::getTotalNumberOfFrames()
{
int n_total_frames_ = 0;
for(int i = 0; i < n_files; i++)
n_total_frames_ += io_files[i]->getTotalNumberOfFrames();
return n_total_frames_;
}
IOMulti::~IOMulti()
{
}
}
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