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/* File source/sink for use with Sample Buffer */
/* (C) 2011-2016 by Sylvain Munaut <tnt@246tNt.com>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <stdio.h>
#include "sampbuf.h"
#define MAX_CHUNK_SIZE (1 << 14) /* 128k samples = 1 Mo */
struct sa_file_priv {
FILE *fh;
};
static int
sa_file_src_init(struct sample_actor *sc, void *params)
{
struct sa_file_priv *p = sc->priv;
const char *filename = params;
p->fh = fopen(filename, "rb");
if (!p->fh) {
fprintf(stderr, "[!] File Source: Failed to open input file '%s'\n", filename);
perror("fopen");
return -errno;
}
return 0;
}
static int
sa_file_sink_init(struct sample_actor *sc, void *params)
{
struct sa_file_priv *p = sc->priv;
const char *filename = params;
p->fh = fopen(filename, "wb");
if (!p->fh) {
fprintf(stderr, "[!] File Sink: Failed to open output file '%s'\n", filename);
perror("fopen");
return -errno;
}
return 0;
}
static void
sa_file_fini(struct sample_actor *sc)
{
struct sa_file_priv *p = sc->priv;
fclose(p->fh);
}
static int
sa_file_src_work(struct sample_actor *sc,
float complex *data, unsigned int len)
{
struct sa_file_priv *p = sc->priv;
size_t rv;
if (len > MAX_CHUNK_SIZE)
len = MAX_CHUNK_SIZE;
rv = fread(data, sizeof(float complex), len, p->fh);
return rv > 0 ? rv : -1;
}
static int
sa_file_sink_work(struct sample_actor *sc,
float complex *data, unsigned int len)
{
struct sa_file_priv *p = sc->priv;
size_t rv;
if (len > MAX_CHUNK_SIZE)
len = MAX_CHUNK_SIZE;
rv = fwrite(data, sizeof(float complex), len, p->fh);
return rv > 0 ? rv : -1;
}
const struct sample_actor_desc sa_file_src = {
.init = sa_file_src_init,
.fini = sa_file_fini,
.work = sa_file_src_work,
.priv_size = sizeof(struct sa_file_priv),
};
const struct sample_actor_desc sa_file_sink = {
.init = sa_file_sink_init,
.fini = sa_file_fini,
.work = sa_file_sink_work,
.priv_size = sizeof(struct sa_file_priv),
};
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