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VILLASnode/lib/formats/raw.c

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/** RAW IO format
*
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2017-2018, 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/plugin.h>
#include <villas/utils.h>
#include <villas/io.h>
#include <villas/formats/raw.h>
#include <villas/compat.h>
typedef float flt32_t;
typedef double flt64_t;
typedef long double flt128_t; /** @todo: check */
/** 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 raw_sprint(struct io *io, char *buf, size_t len, size_t *wbytes, struct sample *smps[], unsigned cnt)
{
int o = 0;
size_t nlen;
int8_t *i8 = (void *) buf;
int16_t *i16 = (void *) buf;
int32_t *i32 = (void *) buf;
int64_t *i64 = (void *) buf;
float *f32 = (void *) buf;
double *f64 = (void *) buf;
#ifdef HAS_128BIT
__int128 *i128 = (void *) buf;
__float128 *f128 = (void *) buf;
#endif
int bits = 1 << (io->flags >> 24);
/* The raw format can not encode multiple samples in one buffer
* as there is no support for framing. */
struct sample *smp = smps[0];
if (cnt > 1)
return -1;
/* First three values are sequence, seconds and nano-seconds timestamps
*
* These fields are always encoded as integers!
*/
if (io->flags & RAW_FAKE_HEADER) {
/* 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(io->flags & RAW_BIG_ENDIAN, 16, smp->sequence);
i16[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 16, smp->ts.origin.tv_sec);
i16[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 16, smp->ts.origin.tv_nsec);
break;
case 32:
i32[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 32, smp->sequence);
i32[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 32, smp->ts.origin.tv_sec);
i32[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 32, smp->ts.origin.tv_nsec);
break;
case 64:
i64[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 64, smp->sequence);
i64[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 64, smp->ts.origin.tv_sec);
i64[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 64, smp->ts.origin.tv_nsec);
break;
#ifdef HAS_128BIT
case 128:
i128[o++] = SWAP_INT_TO_LE(io->flags & RAW_BIG_ENDIAN, 128, smp->sequence);
i128[o++] = SWAP_INT_TO_LE(io->flags & RAW_BIG_ENDIAN, 128, smp->ts.origin.tv_sec);
i128[o++] = SWAP_INT_TO_LE(io->flags & RAW_BIG_ENDIAN, 128, smp->ts.origin.tv_nsec);
break;
#endif
}
}
for (int j = 0; j < smp->length; j++) {
enum signal_type fmt = sample_format(smp, j);
union signal_data *data = &smp->data[j];
/* Check length */
nlen = (o + fmt == SIGNAL_TYPE_COMPLEX ? 2 : 1) * (bits / 8);
if (nlen >= len)
goto out;
switch (fmt) {
case SIGNAL_TYPE_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(io->flags & RAW_BIG_ENDIAN, 32, data->f); break;
case 64: f64[o++] = SWAP_FLOAT_HTOX(io->flags & RAW_BIG_ENDIAN, 64, data->f); break;
#ifdef HAS_128BIT
case 128: f128[o++] = SWAP_FLOAT_HTOX(io->flags & RAW_BIG_ENDIAN, 128, data->f); break;
#endif
}
break;
case SIGNAL_TYPE_INTEGER:
switch (bits) {
case 8: i8 [o++] = data->i; break;
case 16: i16[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 16, data->i); break;
case 32: i32[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 32, data->i); break;
case 64: i64[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 64, data->i); break;
#ifdef HAS_128BIT
case 128: i128[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 128, data->i); break;
#endif
}
break;
case SIGNAL_TYPE_BOOLEAN:
switch (bits) {
case 8: i8 [o++] = data->b ? 1 : 0; break;
case 16: i16[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 16, data->b ? 1 : 0); break;
case 32: i32[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 32, data->b ? 1 : 0); break;
case 64: i64[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 64, data->b ? 1 : 0); break;
#ifdef HAS_128BIT
case 128: i128[o++] = SWAP_INT_HTOX(io->flags & RAW_BIG_ENDIAN, 128, data->b ? 1 : 0); break;
#endif
}
break;
case SIGNAL_TYPE_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(io->flags & RAW_BIG_ENDIAN, 32, creal(data->z));
f32[o++] = SWAP_FLOAT_HTOX(io->flags & RAW_BIG_ENDIAN, 32, cimag(data->z)); break;
case 64: f64[o++] = SWAP_FLOAT_HTOX(io->flags & RAW_BIG_ENDIAN, 64, creal(data->z));
f64[o++] = SWAP_FLOAT_HTOX(io->flags & RAW_BIG_ENDIAN, 64, cimag(data->z)); break;
#ifdef HAS_128BIT
case 128: f128[o++] = SWAP_FLOAT_HTOX(io->flags & RAW_BIG_ENDIAN, 128, creal(data->z);
f128[o++] = SWAP_FLOAT_HTOX(io->flags & RAW_BIG_ENDIAN, 128, cimag(data->z); break;
#endif
}
break;
case SIGNAL_TYPE_AUTO:
case SIGNAL_TYPE_INVALID:
return -1;
}
}
out: if (wbytes)
*wbytes = o * (bits / 8);
return 1;
}
int raw_sscan(struct io *io, const char *buf, size_t len, size_t *rbytes, struct sample *smps[], unsigned cnt)
{
int8_t *i8 = (void *) buf;
int16_t *i16 = (void *) buf;
int32_t *i32 = (void *) buf;
int64_t *i64 = (void *) buf;
float *f32 = (void *) buf;
double *f64 = (void *) buf;
#ifdef HAS_128BIT
__int128 *i128 = (void *) buf;
__float128 *f128 = (void *) buf;
#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, bits = 1 << (io->flags >> 24);
int nlen = len / (bits / 8);
if (cnt > 1)
return -1;
if (len % (bits / 8)) {
warning("Invalid RAW Payload length: %#zx", len);
return -1;
}
if (io->flags & RAW_FAKE_HEADER) {
if (nlen < o + 3) {
warning("Received a packet with no fake header. Skipping...");
return -1;
}
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(io->flags & RAW_BIG_ENDIAN, 16, i16[o++]);
smp->ts.origin.tv_sec = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 16, i16[o++]);
smp->ts.origin.tv_nsec = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 16, i16[o++]);
break;
case 32:
smp->sequence = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 32, i32[o++]);
smp->ts.origin.tv_sec = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 32, i32[o++]);
smp->ts.origin.tv_nsec = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 32, i32[o++]);
break;
case 64:
smp->sequence = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 64, i64[o++]);
smp->ts.origin.tv_sec = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 64, i64[o++]);
smp->ts.origin.tv_nsec = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 64, i64[o++]);
break;
#ifdef HAS_128BIT
case 128:
smp->sequence = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 128, i128[o++]);
smp->ts.origin.tv_sec = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 128, i128[o++]);
smp->ts.origin.tv_nsec = SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 128, i128[o++]);
break;
#endif
}
smp->flags = SAMPLE_HAS_SEQUENCE | SAMPLE_HAS_TS_ORIGIN;
}
else {
smp->flags = 0;
smp->sequence = 0;
smp->ts.origin.tv_sec = 0;
smp->ts.origin.tv_nsec = 0;
}
smp->signals = io->signals;
int i;
for (i = 0; i < smp->capacity && o < nlen; i++) {
enum signal_type fmt = sample_format(smp, i);
union signal_data *data = &smp->data[i];
switch (fmt) {
case SIGNAL_TYPE_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(io->flags & RAW_BIG_ENDIAN, 32, f32[o++]); break;
case 64: data->f = SWAP_FLOAT_XTOH(io->flags & RAW_BIG_ENDIAN, 64, f64[o++]); break;
#ifdef HAS_128BIT
case 128: data->f = SWAP_FLOAT_XTOH(io->flags & RAW_BIG_ENDIAN, 128, f128[o++]); break;
#endif
}
break;
case SIGNAL_TYPE_INTEGER:
switch (bits) {
case 8: data->i = (int8_t) i8[o++]; break;
case 16: data->i = (int16_t) SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 16, i16[o++]); break;
case 32: data->i = (int32_t) SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 32, i32[o++]); break;
case 64: data->i = (int64_t) SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 64, i64[o++]); break;
#ifdef HAS_128BIT
case 128: data->i = (__int128) SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 128, i128[o++]); break;
#endif
}
break;
case SIGNAL_TYPE_BOOLEAN:
switch (bits) {
case 8: data->b = (bool) i8[o++]; break;
case 16: data->b = (bool) SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 16, i16[o++]); break;
case 32: data->b = (bool) SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 32, i32[o++]); break;
case 64: data->b = (bool) SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 64, i64[o++]); break;
#ifdef HAS_128BIT
case 128: data->b = (bool) SWAP_INT_XTOH(io->flags & RAW_BIG_ENDIAN, 128, i128[o++]); break;
#endif
}
break;
case SIGNAL_TYPE_COMPLEX:
switch (bits) {
case 8: data->z = CMPLXF(-1, -1); o += 2; break; /* Not supported */
case 16: data->z = CMPLXF(-1, -1); o += 2; break; /* Not supported */
case 32: data->z = CMPLXF(
SWAP_FLOAT_XTOH(io->flags & RAW_BIG_ENDIAN, 32, f32[o++]), /* real */
SWAP_FLOAT_XTOH(io->flags & RAW_BIG_ENDIAN, 32, f32[o++]) /* imag */
);
break;
case 64: data->z = CMPLXF(
SWAP_FLOAT_XTOH(io->flags & RAW_BIG_ENDIAN, 64, f64[o++]), /* real */
SWAP_FLOAT_XTOH(io->flags & RAW_BIG_ENDIAN, 64, f64[o++]) /* imag */
);
break;
#if HAS_128BIT
case 128: data->z = CMPLXF(
SWAP_FLOAT_XTOH(io->flags & RAW_BIG_ENDIAN, 128, f128[o++]), /* real */
SWAP_FLOAT_XTOH(io->flags & RAW_BIG_ENDIAN, 128, f128[o++]) /* imag */
);
break;
#endif
}
break;
case SIGNAL_TYPE_AUTO:
case SIGNAL_TYPE_INVALID:
warning("Unsupported format in RAW payload");
return -1;
}
}
smp->length = i;
if (smp->length > smp->capacity) {
warning("Received more values than supported: length=%u, capacity=%u", smp->length, smp->capacity);
smp->length = smp->capacity;
}
if (rbytes)
*rbytes = o * (bits / 8);
return 1;
}
#define REGISTER_FORMAT_RAW(i, n, d, f) \
static struct plugin i = { \
.name = n, \
.description = d, \
.type = PLUGIN_TYPE_FORMAT, \
.format = { \
.flags = f | IO_HAS_BINARY_PAYLOAD |\
SAMPLE_HAS_DATA, \
.sprint = raw_sprint, \
.sscan = raw_sscan \
} \
}; \
REGISTER_PLUGIN(& i);
/* Feel free to add additional format identifiers here to suit your needs */
REGISTER_FORMAT_RAW(p_8, "raw.8", "Raw 8 bit", RAW_BITS_8)
REGISTER_FORMAT_RAW(p_16be, "raw.16.be", "Raw 16 bit, big endian byte-order", RAW_BITS_16 | RAW_BIG_ENDIAN)
REGISTER_FORMAT_RAW(p_32be, "raw.32.be", "Raw 32 bit, big endian byte-order", RAW_BITS_32 | RAW_BIG_ENDIAN)
REGISTER_FORMAT_RAW(p_64be, "raw.64.be", "Raw 64 bit, big endian byte-order", RAW_BITS_64 | RAW_BIG_ENDIAN)
REGISTER_FORMAT_RAW(p_16le, "raw.16.le", "Raw 16 bit, little endian byte-order", RAW_BITS_16)
REGISTER_FORMAT_RAW(p_32le, "raw.32.le", "Raw 32 bit, little endian byte-order", RAW_BITS_32)
REGISTER_FORMAT_RAW(p_64le, "raw.64.le", "Raw 64 bit, little endian byte-order", RAW_BITS_64)
#ifdef HAS_128BIT
REGISTER_FORMAT_RAW(p_128le, "raw.128.be", "Raw 128 bit, big endian byte-order", RAW_BITS_128 | RAW_BIG_ENDIAN)
REGISTER_FORMAT_RAW(p_128le, "raw.128.le", "Raw 128 bit, little endian byte-order", RAW_BITS_128)
#endif
REGISTER_FORMAT_RAW(p_gtnet, "gtnet", "RTDS GTNET", RAW_BITS_32 | RAW_BIG_ENDIAN)
REGISTER_FORMAT_RAW(p_gtnef, "gtnet.fake", "RTDS GTNET with fake header", RAW_BITS_32 | RAW_BIG_ENDIAN | RAW_FAKE_HEADER)
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