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VILLASnode/lib/formats/raw.cpp

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/** RAW IO format
*
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2014-2020, Institute for Automation of Complex Power Systems, EONERC
* @license GNU General Public License (version 3)
*
* VILLASnode
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program 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
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************************/
#include <villas/sample.h>
#include <villas/utils.hpp>
#include <villas/formats/raw.hpp>
#include <villas/compat.hpp>
#include <villas/exceptions.hpp>
typedef float flt32_t;
typedef double flt64_t;
typedef long double flt128_t; /** @todo check */
using namespace villas;
using namespace villas::node;
/** Convert double to host byte order */
#define SWAP_FLOAT_XTOH(o, b, n) ({ \
union { flt ## b ## _t f; uint ## b ## _t i; } x = { .f = n }; \
x.i = (o) ? be ## b ## toh(x.i) : le ## b ## toh(x.i); \
x.f; \
})
/** Convert double to big/little endian byte order */
#define SWAP_FLOAT_HTOX(o, b, n) ({ \
union { flt ## b ## _t f; uint ## b ## _t i; } x = { .f = n }; \
x.i = (o) ? htobe ## b (x.i) : htole ## b (x.i); \
x.f; \
})
/** Convert integer of varying width to host byte order */
#define SWAP_INT_XTOH(o, b, n) (o ? be ## b ## toh(n) : le ## b ## toh(n))
/** Convert integer of varying width to big/little endian byte order */
#define SWAP_INT_HTOX(o, b, n) (o ? htobe ## b (n) : htole ## b (n))
int RawFormat::sprint(char *buf, size_t len, size_t *wbytes, const struct sample * const smps[], unsigned cnt)
{
int o = 0;
size_t nlen;
void *vbuf = (char *) buf; /* Avoid warning about invalid pointer cast */
int8_t *i8 = (int8_t *) vbuf;
int16_t *i16 = (int16_t *) vbuf;
int32_t *i32 = (int32_t *) vbuf;
int64_t *i64 = (int64_t *) vbuf;
float *f32 = (float *) vbuf;
double *f64 = (double *) vbuf;
#ifdef HAS_128BIT
__int128 *i128 = (__int128 *) vbuf;
__float128 *f128 = (__float128 *) vbuf;
#endif
for (unsigned i = 0; i < cnt; i++) {
const struct sample *smp = smps[i];
/* First three values are sequence, seconds and nano-seconds timestamps
*
* These fields are always encoded as integers!
*/
if (fake) {
/* Check length */
nlen = (o + 3) * (bits / 8);
if (nlen >= len)
goto out;
switch (bits) {
case 8:
i8[o++] = smp->sequence;
i8[o++] = smp->ts.origin.tv_sec;
i8[o++] = smp->ts.origin.tv_nsec;
break;
case 16:
i16[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 16, smp->sequence);
i16[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 16, smp->ts.origin.tv_sec);
i16[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 16, smp->ts.origin.tv_nsec);
break;
case 32:
i32[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 32, smp->sequence);
i32[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 32, smp->ts.origin.tv_sec);
i32[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 32, smp->ts.origin.tv_nsec);
break;
case 64:
i64[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 64, smp->sequence);
i64[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 64, smp->ts.origin.tv_sec);
i64[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 64, smp->ts.origin.tv_nsec);
break;
#ifdef HAS_128BIT
case 128:
i128[o++] = SWAP_INT_TO_LE(endianess == Endianess::BIG, 128, smp->sequence);
i128[o++] = SWAP_INT_TO_LE(endianess == Endianess::BIG, 128, smp->ts.origin.tv_sec);
i128[o++] = SWAP_INT_TO_LE(endianess == Endianess::BIG, 128, smp->ts.origin.tv_nsec);
break;
#endif
}
}
for (unsigned j = 0; j < smp->length; j++) {
enum SignalType fmt = sample_format(smp, j);
const union signal_data *data = &smp->data[j];
/* Check length */
nlen = (o + (fmt == SignalType::COMPLEX ? 2 : 1)) * (bits / 8);
if (nlen >= len)
goto out;
switch (fmt) {
case SignalType::FLOAT:
switch (bits) {
case 8:
i8 [o++] = -1;
break; /* Not supported */
case 16:
i16[o++] = -1;
break; /* Not supported */
case 32:
f32[o++] = SWAP_FLOAT_HTOX(endianess == Endianess::BIG, 32, (float) data->f);
break;
case 64:
f64[o++] = SWAP_FLOAT_HTOX(endianess == Endianess::BIG, 64, data->f);
break;
#ifdef HAS_128BIT
case 128: f128[o++] = SWAP_FLOAT_HTOX(endianess == Endianess::BIG, 128, data->f); break;
#endif
}
break;
case SignalType::INTEGER:
switch (bits) {
case 8:
i8 [o++] = data->i;
break;
case 16:
i16[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 16, data->i);
break;
case 32:
i32[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 32, data->i);
break;
case 64:
i64[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 64, data->i);
break;
#ifdef HAS_128BIT
case 128:
i128[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 128, data->i);
break;
#endif
}
break;
case SignalType::BOOLEAN:
switch (bits) {
case 8:
i8 [o++] = data->b ? 1 : 0;
break;
case 16:
i16[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 16, data->b ? 1 : 0);
break;
case 32:
i32[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 32, data->b ? 1 : 0);
break;
case 64:
i64[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 64, data->b ? 1 : 0);
break;
#ifdef HAS_128BIT
case 128:
i128[o++] = SWAP_INT_HTOX(endianess == Endianess::BIG, 128, data->b ? 1 : 0);
break;
#endif
}
break;
case SignalType::COMPLEX:
switch (bits) {
case 8:
i8 [o++] = -1; /* Not supported */
i8 [o++] = -1;
break;
case 16:
i16[o++] = -1; /* Not supported */
i16[o++] = -1;
break;
case 32:
f32[o++] = SWAP_FLOAT_HTOX(endianess == Endianess::BIG, 32, (float) std::real(data->z));
f32[o++] = SWAP_FLOAT_HTOX(endianess == Endianess::BIG, 32, (float) std::imag(data->z));
break;
case 64:
f64[o++] = SWAP_FLOAT_HTOX(endianess == Endianess::BIG, 64, std::real(data->z));
f64[o++] = SWAP_FLOAT_HTOX(endianess == Endianess::BIG, 64, std::imag(data->z));
break;
#ifdef HAS_128BIT
case 128:
f128[o++] = SWAP_FLOAT_HTOX(endianess == Endianess::BIG, 128, std::real(data->z));
f128[o++] = SWAP_FLOAT_HTOX(endianess == Endianess::BIG, 128, std::imag(data->z));
break;
#endif
}
break;
case SignalType::INVALID:
return -1;
}
}
}
out: if (wbytes)
*wbytes = o * (bits / 8);
return cnt;
}
int RawFormat::sscan(const char *buf, size_t len, size_t *rbytes, struct sample * const smps[], unsigned cnt)
{
void *vbuf = (void *) buf; /* Avoid warning about invalid pointer cast */
int8_t *i8 = (int8_t *) vbuf;
int16_t *i16 = (int16_t *) vbuf;
int32_t *i32 = (int32_t *) vbuf;
int64_t *i64 = (int64_t *) vbuf;
float *f32 = (float *) vbuf;
double *f64 = (double *) vbuf;
#ifdef HAS_128BIT
__int128 *i128 = (__int128 *) vbuf;
__float128 *f128 = (__float128 *) vbuf;
#endif
/* The raw format can not encode multiple samples in one buffer
* as there is no support for framing. */
struct sample *smp = smps[0];
int o = 0;
int nlen = len / (bits / 8);
if (cnt > 1)
return -1;
if (len % (bits / 8))
return -1; /* Invalid RAW Payload length */
if (fake) {
if (nlen < o + 3)
return -1; /* Received a packet with no fake header. Skipping... */
switch (bits) {
case 8:
smp->sequence = i8[o++];
smp->ts.origin.tv_sec = i8[o++];
smp->ts.origin.tv_nsec = i8[o++];
break;
case 16:
smp->sequence = SWAP_INT_XTOH(endianess == Endianess::BIG, 16, i16[o++]);
smp->ts.origin.tv_sec = SWAP_INT_XTOH(endianess == Endianess::BIG, 16, i16[o++]);
smp->ts.origin.tv_nsec = SWAP_INT_XTOH(endianess == Endianess::BIG, 16, i16[o++]);
break;
case 32:
smp->sequence = SWAP_INT_XTOH(endianess == Endianess::BIG, 32, i32[o++]);
smp->ts.origin.tv_sec = SWAP_INT_XTOH(endianess == Endianess::BIG, 32, i32[o++]);
smp->ts.origin.tv_nsec = SWAP_INT_XTOH(endianess == Endianess::BIG, 32, i32[o++]);
break;
case 64:
smp->sequence = SWAP_INT_XTOH(endianess == Endianess::BIG, 64, i64[o++]);
smp->ts.origin.tv_sec = SWAP_INT_XTOH(endianess == Endianess::BIG, 64, i64[o++]);
smp->ts.origin.tv_nsec = SWAP_INT_XTOH(endianess == Endianess::BIG, 64, i64[o++]);
break;
#ifdef HAS_128BIT
case 128:
smp->sequence = SWAP_INT_XTOH(endianess == Endianess::BIG, 128, i128[o++]);
smp->ts.origin.tv_sec = SWAP_INT_XTOH(endianess == Endianess::BIG, 128, i128[o++]);
smp->ts.origin.tv_nsec = SWAP_INT_XTOH(endianess == Endianess::BIG, 128, i128[o++]);
break;
#endif
}
smp->flags = (int) SampleFlags::HAS_SEQUENCE | (int) SampleFlags::HAS_TS_ORIGIN;
}
else {
smp->flags = 0;
smp->sequence = 0;
smp->ts.origin.tv_sec = 0;
smp->ts.origin.tv_nsec = 0;
}
smp->signals = signals;
unsigned i;
for (i = 0; i < smp->capacity && o < nlen; i++) {
enum SignalType fmt = sample_format(smp, i);
union signal_data *data = &smp->data[i];
switch (fmt) {
case SignalType::FLOAT:
switch (bits) {
case 8: data->f = -1; o++; break; /* Not supported */
case 16: data->f = -1; o++; break; /* Not supported */
case 32: data->f = SWAP_FLOAT_XTOH(endianess == Endianess::BIG, 32, f32[o++]); break;
case 64: data->f = SWAP_FLOAT_XTOH(endianess == Endianess::BIG, 64, f64[o++]); break;
#ifdef HAS_128BIT
case 128: data->f = SWAP_FLOAT_XTOH(endianess == Endianess::BIG, 128, f128[o++]); break;
#endif
}
break;
case SignalType::INTEGER:
switch (bits) {
case 8: data->i = (int8_t) i8[o++]; break;
case 16: data->i = (int16_t) SWAP_INT_XTOH(endianess == Endianess::BIG, 16, i16[o++]); break;
case 32: data->i = (int32_t) SWAP_INT_XTOH(endianess == Endianess::BIG, 32, i32[o++]); break;
case 64: data->i = (int64_t) SWAP_INT_XTOH(endianess == Endianess::BIG, 64, i64[o++]); break;
#ifdef HAS_128BIT
case 128: data->i = (__int128) SWAP_INT_XTOH(endianess == Endianess::BIG, 128, i128[o++]); break;
#endif
}
break;
case SignalType::BOOLEAN:
switch (bits) {
case 8: data->b = (bool) i8[o++]; break;
case 16: data->b = (bool) SWAP_INT_XTOH(endianess == Endianess::BIG, 16, i16[o++]); break;
case 32: data->b = (bool) SWAP_INT_XTOH(endianess == Endianess::BIG, 32, i32[o++]); break;
case 64: data->b = (bool) SWAP_INT_XTOH(endianess == Endianess::BIG, 64, i64[o++]); break;
#ifdef HAS_128BIT
case 128: data->b = (bool) SWAP_INT_XTOH(endianess == Endianess::BIG, 128, i128[o++]); break;
#endif
}
break;
case SignalType::COMPLEX:
switch (bits) {
case 8: data->z = std::complex<float>(-1, -1); o += 2; break; /* Not supported */
case 16: data->z = std::complex<float>(-1, -1); o += 2; break; /* Not supported */
case 32: data->z = std::complex<float>(
SWAP_FLOAT_XTOH(endianess == Endianess::BIG, 32, f32[o++]),
SWAP_FLOAT_XTOH(endianess == Endianess::BIG, 32, f32[o++]));
break;
case 64: data->z = std::complex<float>(
SWAP_FLOAT_XTOH(endianess == Endianess::BIG, 64, f64[o++]),
SWAP_FLOAT_XTOH(endianess == Endianess::BIG, 64, f64[o++]));
break;
#if HAS_128BIT
case 128: data->z = std::complex<float>(
SWAP_FLOAT_XTOH(endianess == Endianess::BIG, 128, f128[o++]),
SWAP_FLOAT_XTOH(endianess == Endianess::BIG, 128, f128[o++]));
break;
#endif
}
break;
case SignalType::INVALID:
return -1; /* Unsupported format in RAW payload */
}
}
smp->length = i;
if (smp->length > smp->capacity)
smp->length = smp->capacity; /* Received more values than supported */
if (rbytes)
*rbytes = o * (bits / 8);
return 1;
}
void RawFormat::parse(json_t *json)
{
int ret;
json_error_t err;
int fake_tmp = 0;
const char *end = nullptr;
ret = json_unpack_ex(json, &err, 0, "{ }",
"endianess", &end,
"fake", &fake_tmp,
"bits", &bits
);
if (ret)
throw ConfigError(json, err, "node-config-format-raw", "Failed to parse format configuration");
if (bits % 8 != 0 || bits > 128 || bits <= 0)
throw ConfigError(json, "node-config-format-raw-bits", "Failed to parse format configuration");
if (end) {
if (bits <= 8)
throw ConfigError(json, "node-config-format-raw-endianess", "An endianess settings must only provided for bits > 8");
if (!strcmp(end, "little"))
endianess = Endianess::LITTLE;
else if (!strcmp(end, "big"))
endianess = Endianess::BIG;
else
throw ConfigError(json, "node-config-format-raw-endianess", "Endianess must be either 'big' or 'little'");
}
fake = fake_tmp;
if (fake)
flags |= (int) SampleFlags::HAS_SEQUENCE | (int) SampleFlags::HAS_TS_ORIGIN;
else
flags &= ~((int) SampleFlags::HAS_SEQUENCE | (int) SampleFlags::HAS_TS_ORIGIN);
BinaryFormat::parse(json);
}
static char n1[] = "raw";
static char d1[] = "Raw binary data";
static FormatPlugin<RawFormat, n1, d1, (int) SampleFlags::HAS_DATA> p1;
static char n2[] = "gtnet";
static char d2[] = "RTDS GTNET";
static FormatPlugin<GtnetRawFormat, n2, d2, (int) SampleFlags::HAS_DATA> p2;
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