mirror of https://gerrit.osmocom.org/gapk
96 lines
3.2 KiB
C
96 lines
3.2 KiB
C
/* Processing Queue Management */
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/*
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* This file is part of gapk (GSM Audio Pocket Knife).
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*
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* gapk is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gapk is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with gapk. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdint.h>
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#include <stdio.h> /* for FILE */
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#include <osmocom/core/linuxlist.h>
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enum osmo_gapk_pq_item_type {
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OSMO_GAPK_ITEM_TYPE_SOURCE,
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OSMO_GAPK_ITEM_TYPE_SINK,
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OSMO_GAPK_ITEM_TYPE_PROC,
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};
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struct osmo_gapk_pq_item {
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/*! input frame size (in bytes). '0' in case of variable frames */
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unsigned int len_in;
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/*! output frame size (in bytes). '0' in case of variable frames */
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unsigned int len_out;
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/*! opaque state */
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void *state;
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/*! buffer for output data */
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uint8_t *buf;
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/*! call-back for actual format conversion function
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* \param[in] state opaque state pointer
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* \param[out] out caller-allocated buffer for output data
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* \param[in] in input data
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* \param[in] in_len length of input data \a in
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* \returns number of output bytes written to \a out; negative on error */
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int (*proc)(void *state, uint8_t *out, const uint8_t *in, unsigned int in_len);
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int (*wait)(void *state);
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void (*exit)(void *state);
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/*! \brief link to a processing queue */
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struct llist_head list;
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/*! \brief type of item */
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enum osmo_gapk_pq_item_type type;
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};
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#define VAR_BUF_SIZE 320
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struct osmo_gapk_pq {
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struct llist_head items;
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unsigned n_items;
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/*! \brief human-readable name */
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const char *name;
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};
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/* Processing queue management */
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struct osmo_gapk_pq *osmo_gapk_pq_create(const char *name);
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int osmo_gapk_pq_prepare(struct osmo_gapk_pq *pq);
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int osmo_gapk_pq_execute(struct osmo_gapk_pq *pq);
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void osmo_gapk_pq_destroy(struct osmo_gapk_pq *pq);
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/* Processing queue item management */
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struct osmo_gapk_pq_item *osmo_gapk_pq_add_item(struct osmo_gapk_pq *pq);
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/* File */
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int osmo_gapk_pq_queue_file_input(struct osmo_gapk_pq *pq, FILE *src, unsigned int block_len);
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int osmo_gapk_pq_queue_file_output(struct osmo_gapk_pq *pq, FILE *dst, unsigned int block_len);
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/* RTP */
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int osmo_gapk_pq_queue_rtp_input(struct osmo_gapk_pq *pq, int rtp_fd, unsigned int block_len);
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int osmo_gapk_pq_queue_rtp_output(struct osmo_gapk_pq *pq, int rtp_fd, unsigned int block_len);
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/* ALSA */
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int osmo_gapk_pq_queue_alsa_input(struct osmo_gapk_pq *pq, const char *hwdev, unsigned int blk_len);
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int osmo_gapk_pq_queue_alsa_output(struct osmo_gapk_pq *pq, const char *hwdev, unsigned int blk_len);
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/* Format */
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struct osmo_gapk_format_desc;
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int osmo_gapk_pq_queue_fmt_convert(struct osmo_gapk_pq *pq, const struct osmo_gapk_format_desc *fmt, int to_from_n);
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/* Codec */
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struct osmo_gapk_codec_desc;
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int osmo_gapk_pq_queue_codec(struct osmo_gapk_pq *pq, const struct osmo_gapk_codec_desc *codec, int encode);
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