mirror of https://gerrit.osmocom.org/gapk
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/* Process Queue: File handling tasks */
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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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#include <errno.h>
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#include <stdint.h>
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#include <talloc.h>
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#include <osmocom/gapk/logging.h>
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#include <osmocom/gapk/codecs.h>
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#include <osmocom/gapk/formats.h>
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#include <osmocom/gapk/procqueue.h>
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struct pq_state_file {
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FILE *fh;
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unsigned int blk_len;
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};
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static int
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pq_cb_file_input(void *_state, uint8_t *out, const uint8_t *in, unsigned int in_len)
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{
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struct pq_state_file *state = _state;
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int rv;
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rv = fread(out, state->blk_len, 1, state->fh);
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if (rv <= 0)
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return -1;
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return rv * state->blk_len;
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}
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static int
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pq_cb_file_output(void *_state, uint8_t *out, const uint8_t *in, unsigned int in_len)
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{
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struct pq_state_file *state = _state;
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int rv;
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rv = fwrite(in, in_len, 1, state->fh);
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return rv == 1 ? 0 : -1;
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}
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static void
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pq_cb_file_exit(void *_state)
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{
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talloc_free(_state);
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}
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static int
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pq_queue_file_op(struct osmo_gapk_pq *pq, FILE *fh, unsigned int blk_len, int in_out_n)
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{
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struct osmo_gapk_pq_item *item;
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struct pq_state_file *state;
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state = talloc_zero(pq, struct pq_state_file);
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if (!state)
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return -ENOMEM;
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state->fh = fh;
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state->blk_len = blk_len;
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item = osmo_gapk_pq_add_item(pq);
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if (!item) {
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talloc_free(state);
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return -ENOMEM;
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}
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item->type = in_out_n ?
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OSMO_GAPK_ITEM_TYPE_SOURCE : OSMO_GAPK_ITEM_TYPE_SINK;
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item->len_in = in_out_n ? 0 : blk_len;
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item->len_out = in_out_n ? blk_len : 0;
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item->state = state;
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item->proc = in_out_n ? pq_cb_file_input : pq_cb_file_output;
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item->wait = NULL;
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item->exit = pq_cb_file_exit;
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/* Change state's talloc context from pq to item */
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talloc_steal(item, state);
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return 0;
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}
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/*! Add file input to given processing queue
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* This usually only makes sense as first item in the queue
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* \param pq Processing Queue to add the input file to
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* \param[in] src caller-fopen()ed input file
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* \param[in] blk_len block length to be read from file
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* \returns 0 on sucess; negative on error */
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int
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osmo_gapk_pq_queue_file_input(struct osmo_gapk_pq *pq, FILE *src, unsigned int blk_len)
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{
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LOGPGAPK(LOGL_DEBUG, "PQ: Adding file input (blk_len=%u)\n", blk_len);
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return pq_queue_file_op(pq, src, blk_len, 1);
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}
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/*! Add file output to given processing queue
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* This usually only makes sense as first item in the queue
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* \param pq Processing Queue to add the output file to
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* \param[in] dst caller-fopen()ed output file
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* \param[in] blk_len block length to be written to file
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* \returns 0 on sucess; negative on error */
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int
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osmo_gapk_pq_queue_file_output(struct osmo_gapk_pq *pq, FILE *dst, unsigned int blk_len)
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{
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LOGPGAPK(LOGL_DEBUG, "PQ: Adding file output (blk_len=%u)\n", blk_len);
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return pq_queue_file_op(pq, dst, blk_len, 0);
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}
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