mirror of
https://github.com/outbackdingo/UltraGrid.git
synced 2026-03-21 17:40:23 +00:00
580ac72ec2
using bound checking variants Remained last one instance in utils/text.c, that does the checking by itself and vsnprintf compat using vsprintf, that is not used, anyways.
263 lines
10 KiB
C
263 lines
10 KiB
C
/**
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* @file jack_common.h
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* @author Martin Piatka <piatka@cesnet.cz>
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* Martin Pulec <pulec@cesnet.cz>
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*/
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/*
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* Copyright (c) 2019-2023 CESNET, z. s. p. o.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, is permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of CESNET nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef JACK_COMMON_H
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#define JACK_COMMON_H
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#ifndef __cplusplus
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#include <stdbool.h>
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#endif // ! defined __cplusplus
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#include <jack/jack.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "compat/dlfunc.h"
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#include "debug.h"
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#include "types.h"
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#if defined (__linux__) && defined (_GNU_SOURCE)
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#include "utils/fs.h"
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#define HAVE_DLINFO 1
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#endif
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typedef int (*jack_activate_t)(jack_client_t *client) JACK_OPTIONAL_WEAK_EXPORT;
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typedef int (*jack_client_close_t)(jack_client_t *client) JACK_OPTIONAL_WEAK_EXPORT;
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typedef jack_client_t *(*jack_client_open_t)(const char *client_name,
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jack_options_t options,
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jack_status_t *status, ...) JACK_OPTIONAL_WEAK_EXPORT;
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typedef int (*jack_connect_t)(jack_client_t *client,
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const char *source_port,
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const char *destination_port) JACK_OPTIONAL_WEAK_EXPORT;
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typedef int (*jack_deactivate_t)(jack_client_t *client) JACK_OPTIONAL_WEAK_EXPORT;
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typedef int (*jack_disconnect_t)(jack_client_t *client,
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const char *source_port,
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const char *destination_port) JACK_OPTIONAL_WEAK_EXPORT;
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typedef void (*jack_free_t)(void* ptr) JACK_OPTIONAL_WEAK_EXPORT;
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typedef const char **(*jack_get_ports_t)(jack_client_t *client,
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const char *port_name_pattern,
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const char *type_name_pattern,
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unsigned long flags) JACK_OPTIONAL_WEAK_EXPORT;
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typedef jack_nframes_t (*jack_get_sample_rate_t)(jack_client_t *) JACK_OPTIONAL_WEAK_EXPORT;
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typedef void * (*jack_port_get_buffer_t)(jack_port_t *port, jack_nframes_t) JACK_OPTIONAL_WEAK_EXPORT;
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typedef const char * (*jack_port_name_t)(const jack_port_t *port) JACK_OPTIONAL_WEAK_EXPORT;
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typedef jack_port_t * (*jack_port_register_t)(jack_client_t *client,
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const char *port_name,
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const char *port_type,
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unsigned long flags,
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unsigned long buffer_size) JACK_OPTIONAL_WEAK_EXPORT;
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typedef int (*jack_set_process_callback_t)(jack_client_t *client,
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JackProcessCallback process_callback,
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void *arg) JACK_OPTIONAL_WEAK_EXPORT;
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typedef int (*jack_set_sample_rate_callback_t)(jack_client_t *client,
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JackSampleRateCallback srate_callback,
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void *arg) JACK_OPTIONAL_WEAK_EXPORT;
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struct libjack_connection {
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LIB_HANDLE libjack; ///< lib connection
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jack_activate_t activate;
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jack_client_close_t client_close;
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jack_client_open_t client_open;
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jack_connect_t connect;
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jack_deactivate_t deactivate;
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jack_disconnect_t disconnect;
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jack_free_t free;
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jack_get_ports_t get_ports;
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jack_get_sample_rate_t get_sample_rate;
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jack_port_get_buffer_t port_get_buffer;
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jack_port_name_t port_name;
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jack_port_register_t port_register;
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jack_set_process_callback_t set_process_callback;
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jack_set_sample_rate_callback_t set_sample_rate_callback;
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};
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static void close_libjack(struct libjack_connection *s)
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{
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if (s == NULL) {
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return;
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}
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#ifdef RTLD_DEFAULT
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if (s->libjack != RTLD_DEFAULT) {
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dlclose(s->libjack);
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}
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#else
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dlclose(s->libjack);
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#endif // defined RTLD_DEFAULT
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free(s);
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}
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#define JACK_DLSYM(sym) s->sym = (void *) dlsym(s->libjack, "jack_" #sym); if (s->sym == NULL) { log_msg(LOG_LEVEL_ERROR, "JACK symbol %s not found: %s\n", "jack_" #sym, dlerror()); return false; }
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static bool load_jack_symbols(struct libjack_connection *s)
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{
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JACK_DLSYM(activate);
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JACK_DLSYM(client_close)
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JACK_DLSYM(client_open)
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JACK_DLSYM(connect);
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JACK_DLSYM(deactivate);
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JACK_DLSYM(disconnect);
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JACK_DLSYM(free)
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JACK_DLSYM(get_ports)
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JACK_DLSYM(get_sample_rate);
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JACK_DLSYM(set_sample_rate_callback);
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JACK_DLSYM(port_get_buffer);
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JACK_DLSYM(port_name);
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JACK_DLSYM(port_register);
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JACK_DLSYM(set_process_callback);
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return true;
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}
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static struct libjack_connection *open_libjack(void)
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{
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struct libjack_connection *s = calloc(1, sizeof(struct libjack_connection));
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#ifdef RTLD_DEFAULT
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// try to load from already loaded library (eg. by LD_PRELOAD), RTLD_DEFAULT is POSIX-only
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if (dlsym(RTLD_DEFAULT, "jack_activate") != NULL) {
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s->libjack = RTLD_DEFAULT;
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if (load_jack_symbols(s)) {
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log_msg(LOG_LEVEL_VERBOSE, "Using preloaded JACK library.\n");
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return s;
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}
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}
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#endif
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const char *shlib =
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#ifdef _WIN32
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"C:/Windows/libjack64.dll";
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#elif defined (__APPLE__)
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"libjack.dylib";
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#elif defined (__linux__)
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"libjack.so";
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#else
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"";
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#endif
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s->libjack = dlopen(shlib, RTLD_NOW);
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if (s->libjack == NULL) {
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log_msg(LOG_LEVEL_ERROR, "JACK library \"%s\" opening failed: %s\n", shlib, dlerror());
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free(s);
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return NULL;
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}
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if (!load_jack_symbols(s)) {
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close_libjack(s);
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return NULL;
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}
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#ifdef HAVE_DLINFO
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char path[MAX_PATH_SIZE] = "(unknown)";
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dlinfo(s->libjack, RTLD_DI_ORIGIN, path); // nonstandard GNU extension
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log_msg(LOG_LEVEL_VERBOSE, "Loaded JACK library from %s.\n", path);
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#endif // defined HAVE_DLINFO
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return s;
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}
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static inline struct device_info *audio_jack_probe(const char *client_name,
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unsigned long port_flags,
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int *count)
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{
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jack_client_t *client;
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jack_status_t status;
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char *last_name = NULL;
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int i;
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const char **ports;
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int port_count = 0;
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struct libjack_connection *libjack = open_libjack();
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if (!libjack) {
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return NULL;
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}
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*count = 0;
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client = libjack->client_open(client_name, JackNoStartServer, &status);
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if(status & JackFailure) {
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log_msg(LOG_LEVEL_ERROR, "Opening JACK client failed.\n");
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close_libjack(libjack);
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return NULL;
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}
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ports = libjack->get_ports(client, NULL, NULL, port_flags);
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if(ports == NULL) {
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log_msg(LOG_LEVEL_ERROR, "Unable to enumerate JACK ports.\n");
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close_libjack(libjack);
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return NULL;
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}
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for(port_count = 0; ports[port_count] != NULL; port_count++);
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struct device_info *available_devices = port_count > 0 ? calloc(port_count, sizeof(struct device_info)) : NULL;
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int channel_count = 0;
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for(i = 0; ports[i] != NULL; i++) {
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char *item = strdup(ports[i]);
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assert(item != NULL);
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char *save_ptr = NULL;
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char *name;
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++channel_count;
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name = strtok_r(item, "_", &save_ptr);
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if (name == NULL) { // shouldn't happen
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log_msg(LOG_LEVEL_ERROR, "Incorrect JACK name: %s!\n", ports[i]);
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free(item);
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continue;
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}
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if(last_name && strcmp(last_name, name) != 0) {
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snprintf(available_devices[*count].name, sizeof available_devices[*count].name, "jack:%s (%d channels)", last_name, channel_count);
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snprintf(available_devices[*count].dev, sizeof available_devices[*count].dev, ":\"%s\"", last_name);
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channel_count = 0;
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(*count)++;
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}
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free(last_name);
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last_name = strdup(name);
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free(item);
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}
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if(last_name) {
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snprintf(available_devices[*count].name, sizeof available_devices[*count].name, "jack:%s (%d channels)", last_name, channel_count);
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snprintf(available_devices[*count].dev, sizeof available_devices[*count].dev, ":\"%s\"", last_name);
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(*count)++;
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}
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free(last_name);
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libjack->free(ports);
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libjack->client_close(client);
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close_libjack(libjack);
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return available_devices;
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}
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#endif //JACK_COMMON_H
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