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/* Processing Queue Management */
/*
* 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/>.
*/
#pragma once
#include <stdint.h>
#include <stdio.h> /* for FILE */
#include <osmocom/core/linuxlist.h>
enum osmo_gapk_pq_item_type {
OSMO_GAPK_ITEM_TYPE_SOURCE,
OSMO_GAPK_ITEM_TYPE_SINK,
OSMO_GAPK_ITEM_TYPE_PROC,
};
#define OSMO_GAPK_CAT_NAME_SOURCE "source"
#define OSMO_GAPK_CAT_NAME_SINK "sink"
#define OSMO_GAPK_CAT_NAME_PROC "proc"
struct osmo_gapk_pq_item {
/*! input frame size (in bytes). '0' in case of variable frames */
unsigned int len_in;
/*! output frame size (in bytes). '0' in case of variable frames */
unsigned int len_out;
/*! opaque state */
void *state;
/*! buffer for output data */
uint8_t *buf;
/*! call-back for actual format conversion function
* \param[in] state opaque state pointer
* \param[out] out caller-allocated buffer for output data
* \param[in] in input data
* \param[in] in_len length of input data \a in
* \returns number of output bytes written to \a out; negative on error */
int (*proc)(void *state, uint8_t *out, const uint8_t *in, unsigned int in_len);
int (*wait)(void *state);
void (*exit)(void *state);
/*! \brief link to a processing queue */
struct llist_head list;
/*! \brief type of item */
enum osmo_gapk_pq_item_type type;
/*! \brief category name (src, format, codec, sink) */
const char *cat_name;
/*! \brief sub-category name (file, rtp-amr, amr, alsa) */
const char *sub_name;
};
#define VAR_BUF_SIZE 320
struct osmo_gapk_pq {
struct llist_head items;
unsigned n_items;
/*! \brief human-readable name */
const char *name;
};
/* Processing queue management */
struct osmo_gapk_pq *osmo_gapk_pq_create(const char *name);
int osmo_gapk_pq_check(struct osmo_gapk_pq *pq, int strict);
int osmo_gapk_pq_prepare(struct osmo_gapk_pq *pq);
int osmo_gapk_pq_execute(struct osmo_gapk_pq *pq);
void osmo_gapk_pq_destroy(struct osmo_gapk_pq *pq);
char *osmo_gapk_pq_describe(struct osmo_gapk_pq *pq);
/* Processing queue item management */
struct osmo_gapk_pq_item *osmo_gapk_pq_add_item(struct osmo_gapk_pq *pq);
/* File */
int osmo_gapk_pq_queue_file_input(struct osmo_gapk_pq *pq, FILE *src, unsigned int block_len);
int osmo_gapk_pq_queue_file_output(struct osmo_gapk_pq *pq, FILE *dst, unsigned int block_len);
/* RTP */
int osmo_gapk_pq_queue_rtp_input(struct osmo_gapk_pq *pq, int rtp_fd,
unsigned int block_len, uint8_t pt);
int osmo_gapk_pq_queue_rtp_output(struct osmo_gapk_pq *pq, int rtp_fd,
unsigned int block_len, uint8_t pt);
/* ALSA */
int osmo_gapk_pq_queue_alsa_input(struct osmo_gapk_pq *pq, const char *hwdev, unsigned int blk_len);
int osmo_gapk_pq_queue_alsa_output(struct osmo_gapk_pq *pq, const char *hwdev, unsigned int blk_len);
/* Format */
struct osmo_gapk_format_desc;
int osmo_gapk_pq_queue_fmt_convert(struct osmo_gapk_pq *pq, const struct osmo_gapk_format_desc *fmt, int to_from_n);
/* Codec */
struct osmo_gapk_codec_desc;
int osmo_gapk_pq_queue_codec(struct osmo_gapk_pq *pq, const struct osmo_gapk_codec_desc *codec, int encode);
/* ECU (Error Concealment Unit) */
int osmo_gapk_pq_queue_ecu(struct osmo_gapk_pq *pq, const struct osmo_gapk_codec_desc *codec);
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