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/* Process Queue: Codec handling tasks */
/*
* This file is part of gapk (GSM Audio Pocket Knife).
*
* gapk 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 3 of the License, or
* (at your option) any later version.
*
* gapk 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 gapk. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <stdint.h>
#include <osmocom/gapk/logging.h>
#include <osmocom/gapk/codecs.h>
#include <osmocom/gapk/formats.h>
#include <osmocom/gapk/procqueue.h>
/*! Add a codecl to the processing queue
* \param pq Processing Queue to which the codec is added
* \param[in] codec description
* \param[in] encode (1) or decode (0)
* \returns 0 on success; negative on error */
int
osmo_gapk_pq_queue_codec(struct osmo_gapk_pq *pq, const struct osmo_gapk_codec_desc *codec, int enc_dec_n)
{
const struct osmo_gapk_codec_desc *codec_pcm;
const struct osmo_gapk_format_desc *fmt;
struct osmo_gapk_pq_item *item;
/* allocate a new item to the processing queue */
item = osmo_gapk_pq_add_item(pq);
if (!item)
return -ENOMEM;
/* initialize the codec, if there is an init function */
if (codec->codec_init) {
item->state = codec->codec_init();
if (!item->state)
return -EINVAL;
}
if (enc_dec_n) {
codec_pcm = osmo_gapk_codec_get_from_type(CODEC_PCM);
fmt = osmo_gapk_fmt_get_from_type(codec->codec_enc_format_type);
if (!fmt)
return -EINVAL;
item->len_in = codec_pcm->canon_frame_len;
item->len_out = fmt->frame_len;
item->proc = codec->codec_encode;
} else {
codec_pcm = osmo_gapk_codec_get_from_type(CODEC_PCM);
fmt = osmo_gapk_fmt_get_from_type(codec->codec_dec_format_type);
if (!fmt)
return -EINVAL;
item->len_in = fmt->frame_len;
item->len_out = codec_pcm->canon_frame_len;
item->proc = codec->codec_decode;
}
item->type = OSMO_GAPK_ITEM_TYPE_PROC;
item->exit = codec->codec_exit;
item->wait = NULL;
/* Meta information */
item->cat_name = "codec";
item->sub_name = codec->name;
LOGPGAPK(LOGL_DEBUG, "PQ '%s': Adding codec %s, %s format %s\n",
pq->name, codec->name, enc_dec_n ?
"encoding to" : "decoding from", fmt->name);
if (!item->proc)
return -ENOTSUP;
return 0;
}
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