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Add stdatomic.h compatibility for MSVC

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This commit is contained in:
Jean Pierre Cimalando 2020-02-25 15:23:53 +01:00
parent c9380186ba
commit 30b579feb4
2 changed files with 69 additions and 4 deletions
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64
lv2/atomic_compat.h Normal file
View file

@ -0,0 +1,64 @@
/*
SPDX-License-Identifier: ISC
Sfizz LV2 plugin
Copyright 2019-2020, Paul Ferrand <paul@ferrand.cc>
This file was based on skeleton and example code from the LV2 plugin
distribution available at http://lv2plug.in/
The LV2 sample plugins have the following copyright and notice, which are
extended to the current work:
Copyright 2011-2016 David Robillard <d@drobilla.net>
Copyright 2011 Gabriel M. Beddingfield <gabriel@teuton.org>
Copyright 2011 James Morris <jwm.art.net@gmail.com>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
Compiling this plugin statically against libsndfile implies distributing it
under the terms of the LGPL v3 license. See the LICENSE.md file for more
information. If you did not receive a LICENSE.md file, inform the current
maintainer.
THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#if defined(__cplusplus)
#include <atomic>
#elif defined(_MSC_VER)
#include <intrin.h>
typedef volatile int atomic_int;
inline int atomic_exchange(atomic_int *d, int x)
{
return _InterlockedExchange((volatile long *)d, (long)x);
}
inline void atomic_store(atomic_int *d, int x)
{
_InterlockedExchange((volatile long *)d, (long)x);
}
inline int atomic_load(const atomic_int *d)
{
return _InterlockedOr((volatile long *)d, 0);
}
#else
#include <stdatomic.h>
#endif

9
lv2/sfizz.c
View file

@ -53,9 +53,10 @@
#include <sfizz.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdatomic.h>
#include <string.h>
#include "atomic_compat.h"
#define DEFAULT_SFZ_FILE "/home/paul/Documents/AVL_Percussions/AVL_Drumkits_Percussion-1.0-Alt.sfz"
#define SFIZZ_URI "http://sfztools.github.io/sfizz"
#define SFIZZ_PREFIX SFIZZ_URI "#"
@ -149,7 +150,7 @@ typedef struct
int max_block_size;
int sample_counter;
float sample_rate;
_Atomic(bool) must_update_midnam;
atomic_int must_update_midnam;
} sfizz_plugin_t;
enum
@ -693,7 +694,7 @@ run(LV2_Handle instance, uint32_t sample_count)
// Render the block
sfizz_render_block(self->synth, self->output_buffers, 2, (int)sample_count);
if (self->midnam && atomic_exchange(&self->must_update_midnam, false))
if (self->midnam && atomic_exchange(&self->must_update_midnam, 0))
{
self->midnam->update(self->midnam->handle);
}
@ -784,7 +785,7 @@ sfizz_lv2_update_file_info(sfizz_plugin_t* self, const char* file_path)
lv2_log_note(&self->logger, "[sfizz] Number of groups: %d\n", sfizz_get_num_groups(self->synth));
lv2_log_note(&self->logger, "[sfizz] Number of regions: %d\n", sfizz_get_num_regions(self->synth));
atomic_store(&self->must_update_midnam, true);
atomic_store(&self->must_update_midnam, 1);
}
static LV2_State_Status