Commit 39736940 authored by Hanspeter Portner's avatar Hanspeter Portner

Merge commit '2bf7767e' as 'ser_atom.lv2'

parents 2367bfee 2bf7767e
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# ser_atom.lv2
## General purpose LV2 atom forge serializer
### Reference
* <http://lv2plug.in/ns/ext/urid>
### License
Copyright (c) 2018 Hanspeter Portner (dev@open-music-kontrollers.ch)
This is free software: you can redistribute it and/or modify
it under the terms of the Artistic License 2.0 as published by
The Perl Foundation.
This source is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Artistic License 2.0 for more details.
You should have received a copy of the Artistic License 2.0
along the source as a COPYING file. If not, obtain it from
<http://www.perlfoundation.org/artistic_license_2_0>.
/*
* Copyright (c) 2018 Hanspeter Portner (dev@open-music-kontrollers.ch)
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the Artistic License 2.0 as published by
* The Perl Foundation.
*
* This source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Artistic License 2.0 for more details.
*
* You should have received a copy of the Artistic License 2.0
* along the source as a COPYING file. If not, obtain it from
* http://www.perlfoundation.org/artistic_license_2_0.
*/
#ifndef _SER_ATOM_H
#define _SER_ATOM_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdbool.h>
#include <stdint.h>
#include <stdatomic.h>
#include <stdlib.h>
#include <string.h>
#include <lv2/lv2plug.in/ns/ext/atom/forge.h>
#ifndef SER_ATOM_API
# define SER_ATOM_API static
#endif
typedef void *(*ser_atom_realloc_t)(void *data, void *buf, size_t size);
typedef void (*ser_atom_free_t)(void *data, void *buf);
typedef struct _ser_atom_t ser_atom_t;
SER_ATOM_API int
ser_atom_init(ser_atom_t *ser);
SER_ATOM_API int
ser_atom_funcs(ser_atom_t *ser, ser_atom_realloc_t realloc,
ser_atom_free_t free, void *data);
SER_ATOM_API int
ser_atom_reset(ser_atom_t *ser, LV2_Atom_Forge *forge);
SER_ATOM_API int
ser_atom_deinit(ser_atom_t *ser);
#ifdef SER_ATOM_IMPLEMENTATION
struct _ser_atom_t {
ser_atom_realloc_t realloc;
ser_atom_free_t free;
void *data;
size_t size;
size_t offset;
uint8_t *buf;
};
static LV2_Atom_Forge_Ref
_ser_atom_sink(LV2_Atom_Forge_Sink_Handle handle, const void *buf,
uint32_t size)
{
ser_atom_t *ser = handle;
const size_t needed = ser->offset + size;
while(needed > ser->size)
{
const size_t augmented = ser->size
? ser->size << 1
: 1024;
uint8_t *grown = ser->realloc(ser->data, ser->buf, augmented);
if(!grown) // out-of-memory
{
return 0;
}
ser->buf = grown;
ser->size = augmented;
}
const LV2_Atom_Forge_Ref ref = ser->offset + 1;
memcpy(&ser->buf[ser->offset], buf, size);
ser->offset += size;
return ref;
}
static LV2_Atom *
_ser_atom_deref(LV2_Atom_Forge_Sink_Handle handle, LV2_Atom_Forge_Ref ref)
{
ser_atom_t *ser = handle;
if(!ref) // invalid reference
{
return NULL;
}
const size_t offset = ref - 1;
return (LV2_Atom *)&ser->buf[offset];
}
static void *
_ser_atom_realloc(void *data, void *buf, size_t size)
{
(void)data;
return realloc(buf, size);
}
static void
_ser_atom_free(void *data, void *buf)
{
(void)data;
free(buf);
}
SER_ATOM_API int
ser_atom_funcs(ser_atom_t *ser, ser_atom_realloc_t realloc,
ser_atom_free_t free, void *data)
{
if(!ser || !realloc || !free || ser_atom_deinit(ser))
{
return -1;
}
ser->realloc = realloc;
ser->free = free;
ser->data = data;
return 0;
}
SER_ATOM_API int
ser_atom_init(ser_atom_t *ser)
{
if(!ser)
{
return -1;
}
ser->size = 0;
ser->offset = 0;
ser->buf = NULL;
return ser_atom_funcs(ser, _ser_atom_realloc, _ser_atom_free, NULL);
}
SER_ATOM_API int
ser_atom_reset(ser_atom_t *ser, LV2_Atom_Forge *forge)
{
if(!ser || !forge)
{
return -1;
}
lv2_atom_forge_set_sink(forge, _ser_atom_sink, _ser_atom_deref, ser);
ser->offset = 0;
return 0;
}
SER_ATOM_API int
ser_atom_deinit(ser_atom_t *ser)
{
if(!ser)
{
return -1;
}
if(ser->buf)
{
ser->free(ser->data, ser->buf);
}
ser->size = 0;
ser->offset = 0;
ser->buf = NULL;
return 0;
}
#endif // SER_ATOM_IMPLEMENTATION
#ifdef __cplusplus
}
#endif
#endif //_SER_ATOM_H
CC ?= gcc
C_FLAGS ?= -I../ -Wall -Wextra -Wpedantic $(shell pkg-config --cflags lv2) \
-fprofile-arcs -ftest-coverage
all: ser_atom_test
ser_atom_test: ser_atom_test.c ../ser_atom.lv2/ser_atom.h
$(CC) -std=c11 -g -o $@ $< $(C_FLAGS)
valgrind ./$@
gcov $<
clean:
rm -f ser_atom_test *.gcov *.gc*
/*
* Copyright (c) 2018 Hanspeter Portner (dev@open-music-kontrollers.ch)
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the Artistic License 2.0 as published by
* The Perl Foundation.
*
* This source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Artistic License 2.0 for more details.
*
* You should have received a copy of the Artistic License 2.0
* along the source as a COPYING file. If not, obtain it from
* http://www.perlfoundation.org/artistic_license_2_0.
*/
#include <assert.h>
#include <inttypes.h>
#include <stdio.h>
#define SER_ATOM_IMPLEMENTATION
#include <ser_atom.lv2/ser_atom.h>
#define MAX_ITEMS 0x100000
static uint32_t
_map(void *data, const char *uri)
{
(void)uri;
uint32_t *urid = data;
return ++(*urid);
}
static void *
_realloc(void *data, void *buf, size_t size)
{
(void)data;
(void)buf;
(void)size;
return NULL;
}
static void
_free(void *data, void *buf)
{
(void)data;
(void)buf;
}
int
main(int argc, char **argv)
{
(void)argc;
(void)argv;
ser_atom_t ser;
LV2_Atom_Forge forge;
uint32_t urid = 0;
LV2_URID_Map map = {
.handle = &urid,
.map = _map
};
lv2_atom_forge_init(&forge, &map);
assert(ser_atom_init(NULL) != 0);
assert(ser_atom_init(&ser) == 0);
assert(ser.size == 0);
assert(ser.offset == 0);
assert(ser.buf == NULL);
assert(ser_atom_funcs(NULL, NULL, NULL, NULL) != 0);
assert(ser_atom_funcs(&ser, _realloc, _free, NULL) == 0);
assert(ser_atom_reset(&ser, &forge) == 0);
assert(lv2_atom_forge_bool(&forge, true) == 0);
_free(NULL, NULL);
assert(ser_atom_init(&ser) == 0);
assert(ser.realloc == _ser_atom_realloc);
assert(ser.free == _ser_atom_free);
assert(ser.data == NULL);
assert(ser.size == 0);
assert(ser.offset == 0);
assert(ser.buf == NULL);
assert(ser_atom_reset(NULL, &forge) != 0);
assert(ser_atom_reset(&ser, NULL) != 0);
assert(ser_atom_reset(NULL, NULL) != 0);
assert(ser_atom_reset(&ser, &forge) == 0);
LV2_Atom_Forge_Frame frame;
int64_t i;
assert(lv2_atom_forge_tuple(&forge, &frame) != 0);
for(i = 0; i < MAX_ITEMS; i++)
{
assert(lv2_atom_forge_long(&forge, i) != 0);
}
lv2_atom_forge_pop(&forge, &frame);
i = 0;
LV2_ATOM_TUPLE_FOREACH((const LV2_Atom_Tuple *)ser.buf, atom)
{
assert(atom->size == sizeof(int64_t));
assert(atom->type == forge.Long);
const int64_t *i64 = LV2_ATOM_BODY_CONST(atom);
assert(*i64 == i++);
}
const size_t tot_size = MAX_ITEMS*sizeof(LV2_Atom_Long) + sizeof(LV2_Atom_Tuple);
assert(ser.offset == tot_size);
assert(ser.size >= tot_size);
assert(lv2_atom_forge_deref(&forge, 0) == NULL);
assert(ser_atom_deinit(NULL) != 0);
assert(ser_atom_deinit(&ser) == 0);
assert(ser.size == 0);
assert(ser.offset == 0);
assert(ser.buf == NULL);
return 0;
}
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