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/*
* mpc123 - Musepack Console audio player
* Copyright (C) 2005-2008 Fernando Vezzosi <fv at linuxvar.it>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <unistd.h>
#include <fcntl.h>
#include "mpc123.h"
/* read wrapper */
static mpc_int32_t mpc123_file_read(mpc_reader *t, void *ptr, mpc_int32_t size){
reader_data *data=(reader_data*) t->data;
return read(data->fd, ptr, size);
}
/* seek wrapper */
static mpc_bool_t mpc123_file_seek(mpc_reader *t, mpc_int32_t offset){
reader_data *data=(reader_data*) t->data;
lseek(data->fd, offset, SEEK_SET);
return MPC_TRUE;
}
static mpc_int32_t mpc123_file_tell(mpc_reader *t){
reader_data *data=(reader_data*) t->data;
return lseek(data->fd, 0, SEEK_CUR);
}
/* get filesize */
static mpc_int32_t mpc123_file_get_size(mpc_reader *t){
reader_data *data=(reader_data*) t->data;
off_t old_offset=lseek(data->fd, 0, SEEK_CUR); /* save old pos */
mpc_int32_t toret=lseek(data->fd, 0, SEEK_END);
/* restore old situation */
lseek(data->fd, old_offset, SEEK_SET);
return toret;
}
/* on an empty disk, you can seek() forever */
static mpc_bool_t mpc123_file_canseek(mpc_reader *t){
return MPC_TRUE;
}
/*
* this provides raw data to the decoder library
* handles plain files
*/
mpc_reader mpc123_file_reader={
.read = mpc123_file_read,
.seek = mpc123_file_seek,
.tell = mpc123_file_tell,
.get_size = mpc123_file_get_size,
.canseek = mpc123_file_canseek,
.data = NULL /* reader_data * data */
};
/* vim:ft=c:tw=78:ts=2:et:cin:
*/
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