mirror of
https://github.com/ericonr/sndio.git
synced 2024-02-18 04:45:21 -06:00
1804 lines
35 KiB
C
1804 lines
35 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2008-2012 Alexandre Ratchov <alex@caoua.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <errno.h>
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#include <poll.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "abuf.h"
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#include "defs.h"
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#include "dev.h"
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#include "file.h"
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#include "midi.h"
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#include "opt.h"
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#include "sock.h"
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#include "utils.h"
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#include "bsd-compat.h"
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void sock_log(struct sock *);
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void sock_close(struct sock *);
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void sock_slot_fill(void *);
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void sock_slot_flush(void *);
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void sock_slot_eof(void *);
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void sock_slot_onmove(void *);
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void sock_slot_onvol(void *, unsigned int);
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void sock_midi_imsg(void *, unsigned char *, int);
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void sock_midi_omsg(void *, unsigned char *, int);
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void sock_midi_fill(void *, int);
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struct sock *sock_new(int);
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void sock_exit(void *);
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int sock_fdwrite(struct sock *, void *, int);
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int sock_fdread(struct sock *, void *, int);
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int sock_rmsg(struct sock *);
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int sock_wmsg(struct sock *);
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int sock_rdata(struct sock *);
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int sock_wdata(struct sock *);
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int sock_setpar(struct sock *);
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int sock_auth(struct sock *);
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int sock_hello(struct sock *);
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int sock_execmsg(struct sock *);
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int sock_buildmsg(struct sock *);
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int sock_read(struct sock *);
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int sock_write(struct sock *);
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int sock_pollfd(void *, struct pollfd *);
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int sock_revents(void *, struct pollfd *);
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void sock_in(void *);
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void sock_out(void *);
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void sock_hup(void *);
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struct fileops sock_fileops = {
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"sock",
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sock_pollfd,
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sock_revents,
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sock_in,
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sock_out,
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sock_hup
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};
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struct slotops sock_slotops = {
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sock_slot_onmove,
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sock_slot_onvol,
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sock_slot_fill,
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sock_slot_flush,
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sock_slot_eof,
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sock_exit
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};
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struct midiops sock_midiops = {
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sock_midi_imsg,
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sock_midi_omsg,
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sock_midi_fill,
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sock_exit
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};
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struct sock *sock_list = NULL;
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unsigned int sock_sesrefs = 0; /* connections to the session */
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uint8_t sock_sescookie[AMSG_COOKIELEN]; /* owner of the session */
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void
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sock_log(struct sock *f)
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{
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#ifdef DEBUG
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static char *rstates[] = { "ridl", "rmsg", "rdat", "rret" };
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static char *wstates[] = { "widl", "wmsg", "wdat" };
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#endif
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if (f->slot)
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slot_log(f->slot);
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else if (f->midi)
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midi_log(f->midi);
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else if (f->ctlslot) {
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log_puts("ctlslot");
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log_putu(f->ctlslot - f->ctlslot->dev->ctlslot);
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} else
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log_puts("sock");
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#ifdef DEBUG
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if (log_level >= 3) {
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log_puts(",");
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log_puts(rstates[f->rstate]);
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log_puts(",");
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log_puts(wstates[f->wstate]);
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}
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#endif
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}
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void
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sock_close(struct sock *f)
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{
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struct sock **pf;
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for (pf = &sock_list; *pf != f; pf = &(*pf)->next) {
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#ifdef DEBUG
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if (*pf == NULL) {
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log_puts("sock_close: not on list\n");
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panic();
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}
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#endif
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}
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*pf = f->next;
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#ifdef DEBUG
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if (log_level >= 3) {
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sock_log(f);
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log_puts(": closing\n");
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}
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#endif
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if (f->pstate > SOCK_AUTH)
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sock_sesrefs--;
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if (f->slot) {
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slot_del(f->slot);
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f->slot = NULL;
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}
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if (f->midi) {
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midi_del(f->midi);
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f->midi = NULL;
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}
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if (f->port) {
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port_unref(f->port);
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f->port = NULL;
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}
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if (f->ctlslot) {
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ctlslot_del(f->ctlslot);
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f->ctlslot = NULL;
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xfree(f->ctldesc);
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}
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file_del(f->file);
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close(f->fd);
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xfree(f);
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}
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void
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sock_slot_fill(void *arg)
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{
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struct sock *f = arg;
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struct slot *s = f->slot;
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f->fillpending += s->round;
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": fill, rmax -> ");
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log_puti(f->rmax);
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log_puts(", pending -> ");
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log_puti(f->fillpending);
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log_puts("\n");
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}
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#endif
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}
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void
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sock_slot_flush(void *arg)
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{
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struct sock *f = arg;
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struct slot *s = f->slot;
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f->wmax += s->round * s->sub.bpf;
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": flush, wmax -> ");
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log_puti(f->wmax);
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log_puts("\n");
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}
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#endif
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}
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void
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sock_slot_eof(void *arg)
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{
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struct sock *f = arg;
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#ifdef DEBUG
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if (log_level >= 3) {
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sock_log(f);
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log_puts(": stopped\n");
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}
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#endif
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f->stoppending = 1;
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}
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void
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sock_slot_onmove(void *arg)
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{
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struct sock *f = (struct sock *)arg;
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struct slot *s = f->slot;
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": onmove: delta -> ");
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log_puti(s->delta);
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log_puts("\n");
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}
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#endif
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if (s->pstate != SOCK_START)
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return;
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f->tickpending++;
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}
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void
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sock_slot_onvol(void *arg, unsigned int delta)
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{
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struct sock *f = (struct sock *)arg;
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struct slot *s = f->slot;
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": onvol: vol -> ");
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log_puti(s->vol);
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log_puts("\n");
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}
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#endif
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if (s->pstate != SOCK_START)
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return;
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}
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void
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sock_midi_imsg(void *arg, unsigned char *msg, int size)
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{
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struct sock *f = arg;
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midi_send(f->midi, msg, size);
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}
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void
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sock_midi_omsg(void *arg, unsigned char *msg, int size)
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{
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struct sock *f = arg;
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midi_out(f->midi, msg, size);
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}
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void
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sock_midi_fill(void *arg, int count)
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{
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struct sock *f = arg;
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f->fillpending += count;
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}
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struct sock *
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sock_new(int fd)
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{
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struct sock *f;
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f = xmalloc(sizeof(struct sock));
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f->pstate = SOCK_AUTH;
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f->opt = NULL;
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f->slot = NULL;
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f->port = NULL;
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f->midi = NULL;
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f->ctlslot = NULL;
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f->tickpending = 0;
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f->fillpending = 0;
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f->stoppending = 0;
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f->wstate = SOCK_WIDLE;
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f->wtodo = 0xdeadbeef;
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f->rstate = SOCK_RMSG;
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f->rtodo = sizeof(struct amsg);
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f->wmax = f->rmax = 0;
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f->lastvol = -1;
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f->file = file_new(&sock_fileops, f, "sock", 1);
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f->fd = fd;
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if (f->file == NULL) {
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xfree(f);
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return NULL;
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}
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f->next = sock_list;
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sock_list = f;
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return f;
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}
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void
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sock_exit(void *arg)
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{
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struct sock *f = (struct sock *)arg;
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#ifdef DEBUG
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if (log_level >= 3) {
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sock_log(f);
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log_puts(": exit\n");
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}
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#endif
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sock_close(f);
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}
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/*
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* write on the socke fd and handle errors
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*/
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int
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sock_fdwrite(struct sock *f, void *data, int count)
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{
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int n;
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n = write(f->fd, data, count);
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if (n < 0) {
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#ifdef DEBUG
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if (errno == EFAULT) {
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log_puts("sock_fdwrite: fault\n");
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panic();
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}
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#endif
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if (errno != EAGAIN) {
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if (log_level >= 1) {
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sock_log(f);
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log_puts(": write filed, errno = ");
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log_puti(errno);
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log_puts("\n");
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}
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sock_close(f);
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} else {
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": write blocked\n");
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}
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#endif
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}
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return 0;
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}
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if (n == 0) {
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sock_close(f);
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return 0;
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}
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return n;
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}
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/*
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* read from the socke fd and handle errors
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*/
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int
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sock_fdread(struct sock *f, void *data, int count)
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{
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int n;
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n = read(f->fd, data, count);
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if (n < 0) {
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#ifdef DEBUG
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if (errno == EFAULT) {
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log_puts("sock_fdread: fault\n");
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panic();
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}
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#endif
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if (errno != EAGAIN) {
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if (log_level >= 1) {
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sock_log(f);
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log_puts(": read failed, errno = ");
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log_puti(errno);
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log_puts("\n");
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}
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sock_close(f);
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} else {
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": read blocked\n");
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}
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#endif
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}
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return 0;
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}
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if (n == 0) {
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sock_close(f);
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return 0;
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}
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return n;
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}
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/*
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* read the next message into f->rmsg, return 1 on success
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*/
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int
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sock_rmsg(struct sock *f)
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{
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int n;
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char *data;
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#ifdef DEBUG
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if (f->rtodo == 0) {
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sock_log(f);
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log_puts(": sock_rmsg: nothing to read\n");
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panic();
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}
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#endif
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data = (char *)&f->rmsg + sizeof(struct amsg) - f->rtodo;
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n = sock_fdread(f, data, f->rtodo);
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if (n == 0)
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return 0;
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if (n < f->rtodo) {
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f->rtodo -= n;
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return 0;
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}
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f->rtodo = 0;
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": read full message\n");
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}
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#endif
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return 1;
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}
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/*
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* write the message in f->rmsg, return 1 on success
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*/
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int
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sock_wmsg(struct sock *f)
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{
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int n;
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char *data;
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#ifdef DEBUG
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if (f->wtodo == 0) {
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sock_log(f);
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log_puts(": sock_wmsg: already written\n");
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}
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#endif
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data = (char *)&f->wmsg + sizeof(struct amsg) - f->wtodo;
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n = sock_fdwrite(f, data, f->wtodo);
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if (n == 0)
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return 0;
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if (n < f->wtodo) {
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f->wtodo -= n;
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return 0;
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}
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f->wtodo = 0;
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": wrote full message\n");
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}
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#endif
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return 1;
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}
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/*
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* read data into the slot/midi ring buffer
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*/
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int
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sock_rdata(struct sock *f)
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{
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unsigned char midibuf[MIDI_BUFSZ];
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unsigned char *data;
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int n, count;
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#ifdef DEBUG
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if (f->rtodo == 0) {
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sock_log(f);
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log_puts(": data block already read\n");
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panic();
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}
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#endif
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while (f->rtodo > 0) {
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if (f->slot)
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data = abuf_wgetblk(&f->slot->mix.buf, &count);
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else {
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data = midibuf;
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count = MIDI_BUFSZ;
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}
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if (count > f->rtodo)
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count = f->rtodo;
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n = sock_fdread(f, data, count);
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if (n == 0)
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return 0;
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f->rtodo -= n;
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if (f->slot)
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abuf_wcommit(&f->slot->mix.buf, n);
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else
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midi_in(f->midi, midibuf, n);
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}
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": read complete block\n");
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}
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#endif
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if (f->slot)
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slot_write(f->slot);
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return 1;
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}
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/*
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* read data into the slot/midi ring buffer
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*/
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int
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sock_wdata(struct sock *f)
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{
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static unsigned char dummy[AMSG_DATAMAX];
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unsigned char *data = NULL;
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int n, count;
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#ifdef DEBUG
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if (f->wtodo == 0) {
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sock_log(f);
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log_puts(": attempted to write zero-sized data block\n");
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panic();
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}
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#endif
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if (f->pstate == SOCK_STOP) {
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while (f->wtodo > 0) {
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n = sock_fdwrite(f, dummy, f->wtodo);
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if (n == 0)
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return 0;
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f->wtodo -= n;
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}
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#ifdef DEBUG
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if (log_level >= 4) {
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sock_log(f);
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log_puts(": zero-filled remaining block\n");
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}
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#endif
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return 1;
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}
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while (f->wtodo > 0) {
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if (f->slot)
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data = abuf_rgetblk(&f->slot->sub.buf, &count);
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else if (f->midi)
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data = abuf_rgetblk(&f->midi->obuf, &count);
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else {
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data = (unsigned char *)f->ctldesc +
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(f->wsize - f->wtodo);
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count = f->wtodo;
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}
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if (count > f->wtodo)
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count = f->wtodo;
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n = sock_fdwrite(f, data, count);
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if (n == 0)
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return 0;
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f->wtodo -= n;
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if (f->slot)
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abuf_rdiscard(&f->slot->sub.buf, n);
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else if (f->midi)
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abuf_rdiscard(&f->midi->obuf, n);
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}
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if (f->slot)
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slot_read(f->slot);
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if (f->midi)
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midi_fill(f->midi);
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#ifdef DEBUG
|
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if (log_level >= 4) {
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sock_log(f);
|
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log_puts(": wrote complete block\n");
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}
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
sock_setpar(struct sock *f)
|
|
{
|
|
struct slot *s = f->slot;
|
|
struct dev *d = s->dev;
|
|
struct amsg_par *p = &f->rmsg.u.par;
|
|
unsigned int min, max;
|
|
uint32_t rate, appbufsz;
|
|
uint16_t pchan, rchan;
|
|
|
|
rchan = ntohs(p->rchan);
|
|
pchan = ntohs(p->pchan);
|
|
appbufsz = ntohl(p->appbufsz);
|
|
rate = ntohl(p->rate);
|
|
|
|
if (AMSG_ISSET(p->bits)) {
|
|
if (p->bits < BITS_MIN || p->bits > BITS_MAX) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": ");
|
|
log_putu(p->bits);
|
|
log_puts(": bits out of bounds\n");
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
if (AMSG_ISSET(p->bps)) {
|
|
if (p->bps < ((p->bits + 7) / 8) || p->bps > 4) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": ");
|
|
log_putu(p->bps);
|
|
log_puts(": wrong bytes per sample\n");
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
} else
|
|
p->bps = APARAMS_BPS(p->bits);
|
|
s->par.bits = p->bits;
|
|
s->par.bps = p->bps;
|
|
}
|
|
if (AMSG_ISSET(p->sig))
|
|
s->par.sig = p->sig ? 1 : 0;
|
|
if (AMSG_ISSET(p->le))
|
|
s->par.le = p->le ? 1 : 0;
|
|
if (AMSG_ISSET(p->msb))
|
|
s->par.msb = p->msb ? 1 : 0;
|
|
if (AMSG_ISSET(rchan) && (s->mode & MODE_RECMASK)) {
|
|
if (rchan < 1)
|
|
rchan = 1;
|
|
if (rchan > NCHAN_MAX)
|
|
rchan = NCHAN_MAX;
|
|
s->sub.slot_cmin = f->opt->rmin;
|
|
s->sub.slot_cmax = f->opt->rmin + rchan - 1;
|
|
s->sub.dev_cmin = f->opt->rmin;
|
|
s->sub.dev_cmax = f->opt->rmax;
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": recording channels ");
|
|
log_putu(s->sub.dev_cmin);
|
|
log_puts(":");
|
|
log_putu(s->sub.dev_cmax);
|
|
log_puts(" -> ");
|
|
log_putu(s->sub.slot_cmin);
|
|
log_puts(":");
|
|
log_putu(s->sub.slot_cmax);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
}
|
|
if (AMSG_ISSET(pchan) && (s->mode & MODE_PLAY)) {
|
|
if (pchan < 1)
|
|
pchan = 1;
|
|
if (pchan > NCHAN_MAX)
|
|
pchan = NCHAN_MAX;
|
|
s->mix.slot_cmin = f->opt->pmin;
|
|
s->mix.slot_cmax = f->opt->pmin + pchan - 1;
|
|
s->mix.dev_cmin = f->opt->pmin;
|
|
s->mix.dev_cmax = f->opt->pmax;
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": playback channels ");
|
|
log_putu(s->mix.slot_cmin);
|
|
log_puts(":");
|
|
log_putu(s->mix.slot_cmax);
|
|
log_puts(" -> ");
|
|
log_putu(s->mix.dev_cmin);
|
|
log_puts(":");
|
|
log_putu(s->mix.dev_cmax);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
}
|
|
if (AMSG_ISSET(rate)) {
|
|
if (rate < RATE_MIN)
|
|
rate = RATE_MIN;
|
|
if (rate > RATE_MAX)
|
|
rate = RATE_MAX;
|
|
s->round = dev_roundof(d, rate);
|
|
s->rate = rate;
|
|
if (!AMSG_ISSET(appbufsz)) {
|
|
appbufsz = d->bufsz / d->round * s->round;
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": ");
|
|
log_putu(appbufsz);
|
|
log_puts(" frame buffer\n");
|
|
}
|
|
#endif
|
|
}
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": ");
|
|
log_putu(rate);
|
|
log_puts("Hz sample rate, ");
|
|
log_putu(s->round);
|
|
log_puts(" frame blocks\n");
|
|
}
|
|
#endif
|
|
}
|
|
if (AMSG_ISSET(p->xrun)) {
|
|
if (p->xrun != XRUN_IGNORE &&
|
|
p->xrun != XRUN_SYNC &&
|
|
p->xrun != XRUN_ERROR) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": ");
|
|
log_putx(p->xrun);
|
|
log_puts(": bad xrun policy\n");
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
s->xrun = p->xrun;
|
|
if (f->opt->mmc && s->xrun == XRUN_IGNORE)
|
|
s->xrun = XRUN_SYNC;
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": 0x");
|
|
log_putx(s->xrun);
|
|
log_puts(" xrun policy\n");
|
|
}
|
|
#endif
|
|
}
|
|
if (AMSG_ISSET(appbufsz)) {
|
|
rate = s->rate;
|
|
min = 1;
|
|
max = 1 + rate / d->round;
|
|
min *= s->round;
|
|
max *= s->round;
|
|
appbufsz += s->round / 2;
|
|
appbufsz -= appbufsz % s->round;
|
|
if (appbufsz < min)
|
|
appbufsz = min;
|
|
if (appbufsz > max)
|
|
appbufsz = max;
|
|
s->appbufsz = appbufsz;
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": ");
|
|
log_putu(s->appbufsz);
|
|
log_puts(" frame buffer\n");
|
|
}
|
|
#endif
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
sock_auth(struct sock *f)
|
|
{
|
|
struct amsg_auth *p = &f->rmsg.u.auth;
|
|
|
|
if (sock_sesrefs == 0) {
|
|
/* start a new session */
|
|
memcpy(sock_sescookie, p->cookie, AMSG_COOKIELEN);
|
|
} else if (memcmp(sock_sescookie, p->cookie, AMSG_COOKIELEN) != 0) {
|
|
/* another session is active, drop connection */
|
|
return 0;
|
|
}
|
|
sock_sesrefs++;
|
|
f->pstate = SOCK_HELLO;
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
sock_hello(struct sock *f)
|
|
{
|
|
struct amsg_hello *p = &f->rmsg.u.hello;
|
|
struct slot *s;
|
|
struct port *c;
|
|
struct dev *d;
|
|
unsigned int mode;
|
|
|
|
mode = ntohs(p->mode);
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": hello from <");
|
|
log_puts(p->who);
|
|
log_puts(">, mode = ");
|
|
log_putx(mode);
|
|
log_puts(", ver ");
|
|
log_putu(p->version);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
if (p->version != AMSG_VERSION) {
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": ");
|
|
log_putu(p->version);
|
|
log_puts(": unsupported protocol version\n");
|
|
}
|
|
return 0;
|
|
}
|
|
switch (mode) {
|
|
case MODE_MIDIIN:
|
|
case MODE_MIDIOUT:
|
|
case MODE_MIDIOUT | MODE_MIDIIN:
|
|
case MODE_REC:
|
|
case MODE_PLAY:
|
|
case MODE_PLAY | MODE_REC:
|
|
case MODE_MIXREAD:
|
|
case MODE_MIXWRITE:
|
|
case MODE_MIXREAD | MODE_MIXWRITE:
|
|
break;
|
|
default:
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": ");
|
|
log_putx(mode);
|
|
log_puts(": unsupported mode\n");
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
f->pstate = SOCK_INIT;
|
|
f->port = NULL;
|
|
if (mode & MODE_MIDIMASK) {
|
|
f->slot = NULL;
|
|
f->midi = midi_new(&sock_midiops, f, mode);
|
|
if (f->midi == NULL)
|
|
return 0;
|
|
/* XXX: add 'devtype' to libsndio */
|
|
if (p->devnum < 16) {
|
|
d = dev_bynum(p->devnum);
|
|
if (d == NULL)
|
|
return 0;
|
|
midi_tag(f->midi, p->devnum);
|
|
} else if (p->devnum < 32) {
|
|
midi_tag(f->midi, p->devnum);
|
|
} else if (p->devnum < 48) {
|
|
c = port_bynum(p->devnum - 32);
|
|
if (c == NULL || !port_ref(c))
|
|
return 0;
|
|
f->port = c;
|
|
midi_link(f->midi, c->midi);
|
|
} else
|
|
return 0;
|
|
return 1;
|
|
}
|
|
if (mode & MODE_MIXMASK) {
|
|
d = dev_bynum(p->devnum);
|
|
if (d == NULL) {
|
|
if (log_level >= 2) {
|
|
sock_log(f);
|
|
log_puts(": ");
|
|
log_putu(p->devnum);
|
|
log_puts(": no such device\n");
|
|
}
|
|
return 0;
|
|
}
|
|
f->ctlslot = ctlslot_new(d);
|
|
if (f->ctlslot == NULL) {
|
|
if (log_level >= 2) {
|
|
sock_log(f);
|
|
log_puts(": couldn't get slot\n");
|
|
}
|
|
return 0;
|
|
}
|
|
f->ctldesc = xmalloc(dev_nctl(f->ctlslot->dev) *
|
|
sizeof(struct amsg_mix_desc));
|
|
f->ctlops = 0;
|
|
return 1;
|
|
}
|
|
f->opt = opt_byname(p->opt, p->devnum);
|
|
if (f->opt == NULL)
|
|
return 0;
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": using ");
|
|
dev_log(f->opt->dev);
|
|
log_puts(".");
|
|
log_puts(f->opt->name);
|
|
log_puts(", mode = ");
|
|
log_putx(mode);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
if ((mode & MODE_REC) && (f->opt->mode & MODE_MON)) {
|
|
mode |= MODE_MON;
|
|
mode &= ~MODE_REC;
|
|
}
|
|
if ((mode & f->opt->mode) != mode) {
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": requested mode not allowed\n");
|
|
}
|
|
return 0;
|
|
}
|
|
s = slot_new(f->opt->dev, p->who, &sock_slotops, f, mode);
|
|
if (s == NULL)
|
|
return 0;
|
|
f->midi = NULL;
|
|
if (s->mode & MODE_PLAY) {
|
|
s->mix.slot_cmin = s->mix.dev_cmin = f->opt->pmin;
|
|
s->mix.slot_cmax = s->mix.dev_cmax = f->opt->pmax;
|
|
}
|
|
if (s->mode & MODE_RECMASK) {
|
|
s->sub.slot_cmin = s->sub.dev_cmin = f->opt->rmin;
|
|
s->sub.slot_cmax = s->sub.dev_cmax = f->opt->rmax;
|
|
}
|
|
if (f->opt->mmc) {
|
|
s->xrun = XRUN_SYNC;
|
|
s->tstate = MMC_STOP;
|
|
} else {
|
|
s->xrun = XRUN_IGNORE;
|
|
s->tstate = MMC_OFF;
|
|
}
|
|
s->mix.maxweight = f->opt->maxweight;
|
|
s->dup = f->opt->dup;
|
|
f->slot = s;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* execute the message in f->rmsg, return 1 on success
|
|
*/
|
|
int
|
|
sock_execmsg(struct sock *f)
|
|
{
|
|
struct ctl *c;
|
|
struct slot *s = f->slot;
|
|
struct amsg *m = &f->rmsg;
|
|
unsigned char *data;
|
|
int size, ctl;
|
|
|
|
switch (ntohl(m->cmd)) {
|
|
case AMSG_DATA:
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": DATA message\n");
|
|
}
|
|
#endif
|
|
if (s != NULL && f->pstate != SOCK_START) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": DATA, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
if ((f->slot && !(f->slot->mode & MODE_PLAY)) ||
|
|
(f->midi && !(f->midi->mode & MODE_MIDIOUT))) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": DATA, input-only mode\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
size = ntohl(m->u.data.size);
|
|
if (size <= 0) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": zero size payload\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
if (s != NULL && size % s->mix.bpf != 0) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": not aligned to frame\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
if (s != NULL && size > f->ralign) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": size = ");
|
|
log_puti(size);
|
|
log_puts(": ralign = ");
|
|
log_puti(f->ralign);
|
|
log_puts(": not aligned to block\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
f->rstate = SOCK_RDATA;
|
|
f->rsize = f->rtodo = size;
|
|
if (s != NULL) {
|
|
f->ralign -= size;
|
|
if (f->ralign == 0)
|
|
f->ralign = s->round * s->mix.bpf;
|
|
}
|
|
if (f->rtodo > f->rmax) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": unexpected data, size = ");
|
|
log_putu(size);
|
|
log_puts(", rmax = ");
|
|
log_putu(f->rmax);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
f->rmax -= f->rtodo;
|
|
if (f->rtodo == 0) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": zero-length data chunk\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
break;
|
|
case AMSG_START:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": START message\n");
|
|
}
|
|
#endif
|
|
if (f->pstate != SOCK_INIT || s == NULL) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": START, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
f->tickpending = 0;
|
|
f->stoppending = 0;
|
|
slot_start(s);
|
|
if (s->mode & MODE_PLAY) {
|
|
f->fillpending = s->appbufsz;
|
|
f->ralign = s->round * s->mix.bpf;
|
|
f->rmax = 0;
|
|
}
|
|
if (s->mode & MODE_RECMASK) {
|
|
f->walign = s->round * s->sub.bpf;
|
|
f->wmax = 0;
|
|
}
|
|
f->pstate = SOCK_START;
|
|
f->rstate = SOCK_RMSG;
|
|
f->rtodo = sizeof(struct amsg);
|
|
if (log_level >= 2) {
|
|
slot_log(f->slot);
|
|
log_puts(": ");
|
|
log_putu(s->rate);
|
|
log_puts("Hz, ");
|
|
aparams_log(&s->par);
|
|
if (s->mode & MODE_PLAY) {
|
|
log_puts(", play ");
|
|
log_puti(s->mix.slot_cmin);
|
|
log_puts(":");
|
|
log_puti(s->mix.slot_cmax);
|
|
}
|
|
if (s->mode & MODE_RECMASK) {
|
|
log_puts(", rec ");
|
|
log_puti(s->sub.slot_cmin);
|
|
log_puts(":");
|
|
log_puti(s->sub.slot_cmax);
|
|
}
|
|
log_puts(", ");
|
|
log_putu(s->appbufsz / s->round);
|
|
log_puts(" blocks of ");
|
|
log_putu(s->round);
|
|
log_puts(" frames\n");
|
|
}
|
|
break;
|
|
case AMSG_STOP:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": STOP message\n");
|
|
}
|
|
#endif
|
|
if (f->pstate != SOCK_START) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": STOP, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
f->rmax = 0;
|
|
if (!(s->mode & MODE_PLAY))
|
|
f->stoppending = 1;
|
|
f->pstate = SOCK_STOP;
|
|
f->rstate = SOCK_RMSG;
|
|
f->rtodo = sizeof(struct amsg);
|
|
if (s->mode & MODE_PLAY) {
|
|
if (f->ralign < s->round * s->mix.bpf) {
|
|
data = abuf_wgetblk(&s->mix.buf, &size);
|
|
#ifdef DEBUG
|
|
if (size < f->ralign) {
|
|
sock_log(f);
|
|
log_puts(": unaligned stop, size = ");
|
|
log_putu(size);
|
|
log_puts(", ralign = ");
|
|
log_putu(f->ralign);
|
|
log_puts("\n");
|
|
panic();
|
|
}
|
|
#endif
|
|
memset(data, 0, f->ralign);
|
|
abuf_wcommit(&s->mix.buf, f->ralign);
|
|
f->ralign = s->round * s->mix.bpf;
|
|
}
|
|
}
|
|
slot_stop(s);
|
|
break;
|
|
case AMSG_SETPAR:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": SETPAR message\n");
|
|
}
|
|
#endif
|
|
if (f->pstate != SOCK_INIT || s == NULL) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": SETPAR, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
if (!sock_setpar(f)) {
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
f->rtodo = sizeof(struct amsg);
|
|
f->rstate = SOCK_RMSG;
|
|
break;
|
|
case AMSG_GETPAR:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": GETPAR message\n");
|
|
}
|
|
#endif
|
|
if (f->pstate != SOCK_INIT || s == NULL) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": GETPAR, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
AMSG_INIT(m);
|
|
m->cmd = htonl(AMSG_GETPAR);
|
|
m->u.par.legacy_mode = s->mode;
|
|
m->u.par.xrun = s->xrun;
|
|
m->u.par.bits = s->par.bits;
|
|
m->u.par.bps = s->par.bps;
|
|
m->u.par.sig = s->par.sig;
|
|
m->u.par.le = s->par.le;
|
|
m->u.par.msb = s->par.msb;
|
|
if (s->mode & MODE_PLAY) {
|
|
m->u.par.pchan = htons(s->mix.slot_cmax -
|
|
s->mix.slot_cmin + 1);
|
|
}
|
|
if (s->mode & MODE_RECMASK) {
|
|
m->u.par.rchan = htons(s->sub.slot_cmax -
|
|
s->sub.slot_cmin + 1);
|
|
}
|
|
m->u.par.rate = htonl(s->rate);
|
|
m->u.par.appbufsz = htonl(s->appbufsz);
|
|
m->u.par.bufsz = htonl(SLOT_BUFSZ(s));
|
|
m->u.par.round = htonl(s->round);
|
|
f->rstate = SOCK_RRET;
|
|
f->rtodo = sizeof(struct amsg);
|
|
break;
|
|
case AMSG_SETVOL:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": SETVOL message\n");
|
|
}
|
|
#endif
|
|
if (f->pstate < SOCK_INIT || s == NULL) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": SETVOL, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
ctl = ntohl(m->u.vol.ctl);
|
|
if (ctl > MIDI_MAXCTL) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": SETVOL, volume out of range\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
f->rtodo = sizeof(struct amsg);
|
|
f->rstate = SOCK_RMSG;
|
|
f->lastvol = ctl; /* dont trigger feedback message */
|
|
slot_setvol(f->slot, ctl);
|
|
dev_midi_vol(s->dev, s);
|
|
dev_onctl(s->dev, s->dev->ctl_addr +
|
|
CTLADDR_SLOT_LEVEL(f->slot - s->dev->slot), ctl);
|
|
break;
|
|
case AMSG_MIXSUB:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": MIXSUB message, desc = ");
|
|
log_putx(m->u.mixsub.desc);
|
|
log_puts(", val = ");
|
|
log_putx(m->u.mixsub.val);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
if (f->pstate != SOCK_INIT || f->ctlslot == NULL) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": MIXSUB, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
if (m->u.mixsub.desc) {
|
|
if (!(f->ctlops & SOCK_CTLDESC)) {
|
|
ctl = f->ctlslot->mask;
|
|
c = f->ctlslot->dev->ctl_list;
|
|
while (c != NULL) {
|
|
c->desc_mask |= ctl;
|
|
c = c->next;
|
|
}
|
|
}
|
|
f->ctlops |= SOCK_CTLDESC;
|
|
} else
|
|
f->ctlops &= ~SOCK_CTLDESC;
|
|
if (m->u.mixsub.val) {
|
|
f->ctlops |= SOCK_CTLVAL;
|
|
} else
|
|
f->ctlops &= ~SOCK_CTLVAL;
|
|
f->rstate = SOCK_RMSG;
|
|
f->rtodo = sizeof(struct amsg);
|
|
break;
|
|
case AMSG_MIXSET:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": MIXSET message\n");
|
|
}
|
|
#endif
|
|
if (f->pstate < SOCK_INIT || f->ctlslot == NULL) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": MIXSET, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
if (!dev_setctl(f->ctlslot->dev,
|
|
ntohs(m->u.mixset.addr),
|
|
ntohs(m->u.mixset.val),
|
|
f->ctlslot->mask)) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": MIXSET, wrong addr/val\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
f->rtodo = sizeof(struct amsg);
|
|
f->rstate = SOCK_RMSG;
|
|
break;
|
|
case AMSG_AUTH:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": AUTH message\n");
|
|
}
|
|
#endif
|
|
if (f->pstate != SOCK_AUTH) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": AUTH, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
if (!sock_auth(f)) {
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
f->rstate = SOCK_RMSG;
|
|
f->rtodo = sizeof(struct amsg);
|
|
break;
|
|
case AMSG_HELLO:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": HELLO message\n");
|
|
}
|
|
#endif
|
|
if (f->pstate != SOCK_HELLO) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": HELLO, wrong state\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
if (!sock_hello(f)) {
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
AMSG_INIT(m);
|
|
m->cmd = htonl(AMSG_ACK);
|
|
f->rstate = SOCK_RRET;
|
|
f->rtodo = sizeof(struct amsg);
|
|
break;
|
|
case AMSG_BYE:
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": BYE message\n");
|
|
}
|
|
#endif
|
|
if (s != NULL && f->pstate != SOCK_INIT) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": BYE, wrong state\n");
|
|
}
|
|
#endif
|
|
}
|
|
sock_close(f);
|
|
return 0;
|
|
default:
|
|
#ifdef DEBUG
|
|
if (log_level >= 1) {
|
|
sock_log(f);
|
|
log_puts(": unknown command in message\n");
|
|
}
|
|
#endif
|
|
sock_close(f);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* build a message in f->wmsg, return 1 on success and 0 if
|
|
* there's nothing to do. Assume f->wstate is SOCK_WIDLE
|
|
*/
|
|
int
|
|
sock_buildmsg(struct sock *f)
|
|
{
|
|
unsigned int size, mask;
|
|
struct amsg_mix_desc *desc;
|
|
struct ctl *c;
|
|
|
|
/*
|
|
* If pos changed (or initial tick), build a MOVE message.
|
|
*/
|
|
if (f->tickpending) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": building MOVE message, delta = ");
|
|
log_puti(f->slot->delta);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
AMSG_INIT(&f->wmsg);
|
|
f->wmsg.cmd = htonl(AMSG_MOVE);
|
|
f->wmsg.u.ts.delta = htonl(f->slot->delta);
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->wstate = SOCK_WMSG;
|
|
f->tickpending = 0;
|
|
/*
|
|
* XXX: use tickpending as accumulator rather than
|
|
* slot->delta
|
|
*/
|
|
f->slot->delta = 0;
|
|
return 1;
|
|
}
|
|
|
|
if (f->fillpending > 0) {
|
|
AMSG_INIT(&f->wmsg);
|
|
f->wmsg.cmd = htonl(AMSG_FLOWCTL);
|
|
f->wmsg.u.ts.delta = htonl(f->fillpending);
|
|
size = f->fillpending;
|
|
if (f->slot)
|
|
size *= f->slot->mix.bpf;
|
|
f->rmax += size;
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": building FLOWCTL message, count = ");
|
|
log_puti(f->fillpending);
|
|
log_puts(", rmax -> ");
|
|
log_puti(f->rmax);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->wstate = SOCK_WMSG;
|
|
f->fillpending = 0;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* if volume changed build a SETVOL message
|
|
*/
|
|
if (f->pstate >= SOCK_START && f->slot->vol != f->lastvol) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": building SETVOL message, vol = ");
|
|
log_puti(f->slot->vol);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
AMSG_INIT(&f->wmsg);
|
|
f->wmsg.cmd = htonl(AMSG_SETVOL);
|
|
f->wmsg.u.vol.ctl = htonl(f->slot->vol);
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->wstate = SOCK_WMSG;
|
|
f->lastvol = f->slot->vol;
|
|
return 1;
|
|
}
|
|
|
|
if (f->midi != NULL && f->midi->obuf.used > 0) {
|
|
size = f->midi->obuf.used;
|
|
if (size > AMSG_DATAMAX)
|
|
size = AMSG_DATAMAX;
|
|
AMSG_INIT(&f->wmsg);
|
|
f->wmsg.cmd = htonl(AMSG_DATA);
|
|
f->wmsg.u.data.size = htonl(size);
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->wstate = SOCK_WMSG;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* If data available, build a DATA message.
|
|
*/
|
|
if (f->slot != NULL && f->wmax > 0 && f->slot->sub.buf.used > 0) {
|
|
size = f->slot->sub.buf.used;
|
|
if (size > AMSG_DATAMAX)
|
|
size = AMSG_DATAMAX;
|
|
if (size > f->walign)
|
|
size = f->walign;
|
|
if (size > f->wmax)
|
|
size = f->wmax;
|
|
size -= size % f->slot->sub.bpf;
|
|
#ifdef DEBUG
|
|
if (size == 0) {
|
|
sock_log(f);
|
|
log_puts(": sock_buildmsg size == 0\n");
|
|
panic();
|
|
}
|
|
#endif
|
|
f->walign -= size;
|
|
f->wmax -= size;
|
|
if (f->walign == 0)
|
|
f->walign = f->slot->round * f->slot->sub.bpf;
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": building audio DATA message, size = ");
|
|
log_puti(size);
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
AMSG_INIT(&f->wmsg);
|
|
f->wmsg.cmd = htonl(AMSG_DATA);
|
|
f->wmsg.u.data.size = htonl(size);
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->wstate = SOCK_WMSG;
|
|
return 1;
|
|
}
|
|
|
|
if (f->stoppending) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": building STOP message\n");
|
|
}
|
|
#endif
|
|
f->stoppending = 0;
|
|
f->pstate = SOCK_INIT;
|
|
AMSG_INIT(&f->wmsg);
|
|
f->wmsg.cmd = htonl(AMSG_STOP);
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->wstate = SOCK_WMSG;
|
|
return 1;
|
|
}
|
|
|
|
if (f->ctlslot && (f->ctlops & SOCK_CTLDESC)) {
|
|
desc = f->ctldesc;
|
|
mask = f->ctlslot->mask;
|
|
for (c = f->ctlslot->dev->ctl_list; c != NULL; c = c->next) {
|
|
if ((c->desc_mask & mask) == 0)
|
|
continue;
|
|
c->desc_mask &= ~mask;
|
|
c->val_mask &= ~mask;
|
|
strlcpy(desc->chan0.str, c->chan0.str,
|
|
AMSG_MIX_NAMEMAX);
|
|
strlcpy(desc->chan0.opt, c->chan0.opt,
|
|
AMSG_MIX_NAMEMAX);
|
|
strlcpy(desc->chan1.str, c->chan1.str,
|
|
AMSG_MIX_NAMEMAX);
|
|
strlcpy(desc->chan1.opt, c->chan1.opt,
|
|
AMSG_MIX_NAMEMAX);
|
|
desc->type = c->type;
|
|
strlcpy(desc->func, c->func, AMSG_MIX_NAMEMAX);
|
|
desc->addr = htons(c->addr);
|
|
desc->curval = htons(c->curval);
|
|
desc++;
|
|
}
|
|
if (desc != f->ctldesc) {
|
|
size = (char *)desc - (char *)f->ctldesc;
|
|
AMSG_INIT(&f->wmsg);
|
|
f->wmsg.cmd = htonl(AMSG_DATA);
|
|
f->wmsg.u.data.size = htonl(size);
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->wstate = SOCK_WMSG;
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": building mixer DATA message\n");
|
|
}
|
|
#endif
|
|
return 1;
|
|
}
|
|
}
|
|
if (f->ctlslot && (f->ctlops & SOCK_CTLVAL)) {
|
|
mask = f->ctlslot->mask;
|
|
for (c = f->ctlslot->dev->ctl_list; c != NULL; c = c->next) {
|
|
if ((c->val_mask & mask) == 0)
|
|
continue;
|
|
c->val_mask &= ~mask;
|
|
AMSG_INIT(&f->wmsg);
|
|
f->wmsg.cmd = htonl(AMSG_MIXSET);
|
|
f->wmsg.u.mixset.addr = htons(c->addr);
|
|
f->wmsg.u.mixset.val = htons(c->curval);
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->wstate = SOCK_WMSG;
|
|
#ifdef DEBUG
|
|
if (log_level >= 3) {
|
|
sock_log(f);
|
|
log_puts(": building mixer MIXSET message\n");
|
|
}
|
|
#endif
|
|
return 1;
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": no messages to build anymore, idling...\n");
|
|
}
|
|
#endif
|
|
f->wstate = SOCK_WIDLE;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* iteration of the socket reader loop, return 1 on success
|
|
*/
|
|
int
|
|
sock_read(struct sock *f)
|
|
{
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": reading ");
|
|
log_putu(f->rtodo);
|
|
log_puts(" todo\n");
|
|
}
|
|
#endif
|
|
switch (f->rstate) {
|
|
case SOCK_RIDLE:
|
|
return 0;
|
|
case SOCK_RMSG:
|
|
if (!sock_rmsg(f))
|
|
return 0;
|
|
if (!sock_execmsg(f))
|
|
return 0;
|
|
break;
|
|
case SOCK_RDATA:
|
|
if (!sock_rdata(f))
|
|
return 0;
|
|
f->rstate = SOCK_RMSG;
|
|
f->rtodo = sizeof(struct amsg);
|
|
break;
|
|
case SOCK_RRET:
|
|
if (f->wstate != SOCK_WIDLE) {
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": can't reply, write-end blocked\n");
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
f->wmsg = f->rmsg;
|
|
f->wstate = SOCK_WMSG;
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->rstate = SOCK_RMSG;
|
|
f->rtodo = sizeof(struct amsg);
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": copied RRET message\n");
|
|
}
|
|
#endif
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* iteration of the socket writer loop, return 1 on success
|
|
*/
|
|
int
|
|
sock_write(struct sock *f)
|
|
{
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": writing");
|
|
if (f->wstate != SOCK_WIDLE) {
|
|
log_puts(" todo = ");
|
|
log_putu(f->wtodo);
|
|
}
|
|
log_puts("\n");
|
|
}
|
|
#endif
|
|
switch (f->wstate) {
|
|
case SOCK_WMSG:
|
|
if (!sock_wmsg(f))
|
|
return 0;
|
|
if (ntohl(f->wmsg.cmd) != AMSG_DATA) {
|
|
f->wstate = SOCK_WIDLE;
|
|
f->wtodo = 0xdeadbeef;
|
|
break;
|
|
}
|
|
f->wstate = SOCK_WDATA;
|
|
f->wsize = f->wtodo = ntohl(f->wmsg.u.data.size);
|
|
/* PASSTHROUGH */
|
|
case SOCK_WDATA:
|
|
if (!sock_wdata(f))
|
|
return 0;
|
|
if (f->wtodo > 0)
|
|
break;
|
|
f->wstate = SOCK_WIDLE;
|
|
f->wtodo = 0xdeadbeef;
|
|
if (f->pstate == SOCK_STOP) {
|
|
f->pstate = SOCK_INIT;
|
|
f->wmax = 0;
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": drained, moved to INIT state\n");
|
|
}
|
|
#endif
|
|
}
|
|
/* PASSTHROUGH */
|
|
case SOCK_WIDLE:
|
|
if (f->rstate == SOCK_RRET) {
|
|
f->wmsg = f->rmsg;
|
|
f->wstate = SOCK_WMSG;
|
|
f->wtodo = sizeof(struct amsg);
|
|
f->rstate = SOCK_RMSG;
|
|
f->rtodo = sizeof(struct amsg);
|
|
#ifdef DEBUG
|
|
if (log_level >= 4) {
|
|
sock_log(f);
|
|
log_puts(": copied RRET message\n");
|
|
}
|
|
#endif
|
|
} else {
|
|
if (!sock_buildmsg(f))
|
|
return 0;
|
|
}
|
|
break;
|
|
#ifdef DEBUG
|
|
default:
|
|
sock_log(f);
|
|
log_puts(": bad writing end state\n");
|
|
panic();
|
|
#endif
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
sock_pollfd(void *arg, struct pollfd *pfd)
|
|
{
|
|
struct sock *f = arg;
|
|
int events = 0;
|
|
|
|
/*
|
|
* feedback counters, clock ticks and alike may have changed,
|
|
* prepare a message to trigger writes
|
|
*
|
|
* XXX: doing this at the beginning of the cycle is not optimal,
|
|
* because state is changed at the end of the read cycle, and
|
|
* thus counters, ret message and alike are generated then.
|
|
*/
|
|
if (f->wstate == SOCK_WIDLE && f->rstate != SOCK_RRET)
|
|
sock_buildmsg(f);
|
|
|
|
if (f->rstate == SOCK_RMSG ||
|
|
f->rstate == SOCK_RDATA)
|
|
events |= POLLIN;
|
|
if (f->rstate == SOCK_RRET ||
|
|
f->wstate == SOCK_WMSG ||
|
|
f->wstate == SOCK_WDATA)
|
|
events |= POLLOUT;
|
|
pfd->fd = f->fd;
|
|
pfd->events = events;
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
sock_revents(void *arg, struct pollfd *pfd)
|
|
{
|
|
return pfd->revents;
|
|
}
|
|
|
|
void
|
|
sock_in(void *arg)
|
|
{
|
|
struct sock *f = arg;
|
|
|
|
while (sock_read(f))
|
|
;
|
|
}
|
|
|
|
void
|
|
sock_out(void *arg)
|
|
{
|
|
struct sock *f = arg;
|
|
|
|
while (sock_write(f))
|
|
;
|
|
}
|
|
|
|
void
|
|
sock_hup(void *arg)
|
|
{
|
|
struct sock *f = arg;
|
|
|
|
sock_close(f);
|
|
}
|