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/*
* Xilinx Video Library - Buffers Pool
*
* Copyright (C) 2014-2016 Ideas on board Oy
*
* Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at
* your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include <stdlib.h>
#include <string.h>
#include "xlnx-buffers.h"
struct xlnx_video_buffers_pool *xlnx_video_buffers_pool_new(unsigned int nbufs)
{
struct xlnx_video_buffer *buffers;
struct xlnx_video_buffers_pool *pool;
unsigned int i;
pool = malloc(sizeof *pool);
if (pool == NULL)
return NULL;
buffers = malloc(sizeof *buffers * nbufs);
if (buffers == NULL) {
free(pool);
return NULL;
}
memset(buffers, 0, sizeof *buffers * nbufs);
for (i = 0; i < nbufs; ++i)
buffers[i].index = i;
pool->nbufs = nbufs;
pool->buffers = buffers;
return pool;
}
void xlnx_video_buffers_pool_delete(struct xlnx_video_buffers_pool *pool)
{
unsigned int i;
for (i = 0; i < pool->nbufs; ++i) {
if (pool->buffers[i].allocated)
free(pool->buffers[i].mem);
}
free(pool->buffers);
free(pool);
}
int xlnx_video_buffers_pool_alloc(struct xlnx_video_buffers_pool *pool,
size_t size, size_t align)
{
unsigned int i;
int ret;
for (i = 0; i < pool->nbufs; ++i) {
ret = posix_memalign(&pool->buffers[i].mem, align, size);
if (ret != 0)
return -ret;
pool->buffers[i].size = size;
pool->buffers[i].allocated = true;
}
return 0;
}
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