input: Convert chronovu-la8 module.
This commit is contained in:
Bert Vermeulen
parent
5e83cd741f
commit
02e24c0ce0
|
|
@ -43,10 +43,10 @@ libsigrok_la_SOURCES = \
|
|||
|
||||
# Input modules
|
||||
# src/input/binary.c \
|
||||
# src/input/chronovu_la8.c \
|
||||
#
|
||||
libsigrok_la_SOURCES += \
|
||||
src/input/input.c \
|
||||
src/input/chronovu_la8.c \
|
||||
src/input/csv.c \
|
||||
src/input/vcd.c \
|
||||
src/input/wav.c
|
||||
|
|
|
|||
|
|
@ -27,180 +27,150 @@
|
|||
|
||||
#define LOG_PREFIX "input/chronovu-la8"
|
||||
|
||||
#define NUM_PACKETS 2048
|
||||
#define PACKET_SIZE 4096
|
||||
#define DEFAULT_NUM_CHANNELS 8
|
||||
#define DEFAULT_SAMPLERATE "100MHz"
|
||||
#define MAX_CHUNK_SIZE 4096
|
||||
#define CHRONOVU_LA8_FILESIZE 8 * 1024 * 1024 + 5
|
||||
|
||||
/**
|
||||
* Convert the LA8 'divcount' value to the respective samplerate (in Hz).
|
||||
*
|
||||
* LA8 hardware: sample period = (divcount + 1) * 10ns.
|
||||
* Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate).
|
||||
* Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate).
|
||||
*
|
||||
* @param divcount The divcount value as needed by the hardware.
|
||||
*
|
||||
* @return The samplerate in Hz, or 0xffffffffffffffff upon errors.
|
||||
*/
|
||||
static uint64_t divcount_to_samplerate(uint8_t divcount)
|
||||
struct context {
|
||||
gboolean started;
|
||||
uint64_t samplerate;
|
||||
};
|
||||
|
||||
static int format_match(GHashTable *metadata)
|
||||
{
|
||||
if (divcount == 0xff)
|
||||
return 0xffffffffffffffffULL;
|
||||
|
||||
return SR_MHZ(100) / (divcount + 1);
|
||||
}
|
||||
|
||||
static int format_match(const char *filename)
|
||||
{
|
||||
struct stat stat_buf;
|
||||
int ret;
|
||||
|
||||
if (!filename) {
|
||||
sr_err("%s: filename was NULL", __func__);
|
||||
// return SR_ERR; /* FIXME */
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (!g_file_test(filename, G_FILE_TEST_EXISTS)) {
|
||||
sr_err("%s: input file '%s' does not exist",
|
||||
__func__, filename);
|
||||
// return SR_ERR; /* FIXME */
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
|
||||
sr_err("%s: input file '%s' not a regular file",
|
||||
__func__, filename);
|
||||
// return SR_ERR; /* FIXME */
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* Only accept files of length 8MB + 5 bytes. */
|
||||
ret = stat(filename, &stat_buf);
|
||||
if (ret != 0) {
|
||||
sr_err("%s: Error getting file size of '%s'",
|
||||
__func__, filename);
|
||||
return FALSE;
|
||||
}
|
||||
if (stat_buf.st_size != (8 * 1024 * 1024 + 5)) {
|
||||
sr_dbg("%s: File size must be exactly 8388613 bytes ("
|
||||
"it actually is %d bytes in size), so this is not a "
|
||||
"ChronoVu LA8 file.", __func__, stat_buf.st_size);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* TODO: Check for divcount != 0xff. */
|
||||
int size;
|
||||
|
||||
size = GPOINTER_TO_INT(g_hash_table_lookup(metadata,
|
||||
GINT_TO_POINTER(SR_INPUT_META_FILESIZE)));
|
||||
if (size == CHRONOVU_LA8_FILESIZE)
|
||||
return TRUE;
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static int init(struct sr_input *in, const char *filename)
|
||||
static int init(struct sr_input *in, GHashTable *options)
|
||||
{
|
||||
struct sr_channel *ch;
|
||||
struct context *inc;
|
||||
uint64_t samplerate;
|
||||
int num_channels, i;
|
||||
char name[SR_MAX_CHANNELNAME_LEN + 1];
|
||||
char *param;
|
||||
const char *s;
|
||||
char name[16];
|
||||
|
||||
(void)filename;
|
||||
|
||||
num_channels = DEFAULT_NUM_CHANNELS;
|
||||
|
||||
if (in->param) {
|
||||
param = g_hash_table_lookup(in->param, "numchannels");
|
||||
if (param) {
|
||||
num_channels = strtoul(param, NULL, 10);
|
||||
num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels"));
|
||||
if (num_channels < 1) {
|
||||
sr_err("%s: strtoul failed", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
}
|
||||
sr_err("Invalid value for numchannels: must be at least 1.");
|
||||
return SR_ERR_ARG;
|
||||
}
|
||||
|
||||
s = g_variant_get_string(g_hash_table_lookup(options, "samplerate"), NULL);
|
||||
if (sr_parse_sizestring(s, &samplerate) != SR_OK) {
|
||||
sr_err("Invalid samplerate '%s'.", s);
|
||||
return SR_ERR_ARG;
|
||||
}
|
||||
|
||||
/* Create a virtual device. */
|
||||
in->sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, NULL, NULL, NULL);
|
||||
in->priv = inc = g_malloc0(sizeof(struct context));
|
||||
inc->samplerate = samplerate;
|
||||
|
||||
for (i = 0; i < num_channels; i++) {
|
||||
snprintf(name, SR_MAX_CHANNELNAME_LEN, "%d", i);
|
||||
/* TODO: Check return value. */
|
||||
if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, name)))
|
||||
return SR_ERR;
|
||||
snprintf(name, 16, "%d", i);
|
||||
ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, name);
|
||||
in->sdi->channels = g_slist_append(in->sdi->channels, ch);
|
||||
}
|
||||
|
||||
return SR_OK;
|
||||
}
|
||||
|
||||
static int loadfile(struct sr_input *in, const char *filename)
|
||||
static int receive(const struct sr_input *in, GString *buf)
|
||||
{
|
||||
struct sr_datafeed_packet packet;
|
||||
struct sr_datafeed_meta meta;
|
||||
struct sr_datafeed_logic logic;
|
||||
struct sr_config *src;
|
||||
uint8_t buf[PACKET_SIZE], divcount;
|
||||
int i, fd, size, num_channels;
|
||||
uint64_t samplerate;
|
||||
struct context *inc;
|
||||
gsize chunk_size, i;
|
||||
int chunk, num_channels;
|
||||
|
||||
/* TODO: Use glib functions! GIOChannel, g_fopen, etc. */
|
||||
if ((fd = open(filename, O_RDONLY)) == -1) {
|
||||
sr_err("%s: file open failed", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
inc = in->priv;
|
||||
|
||||
g_string_append_len(in->buf, buf->str, buf->len);
|
||||
|
||||
num_channels = g_slist_length(in->sdi->channels);
|
||||
|
||||
/* Seek to the end of the file, and read the divcount byte. */
|
||||
divcount = 0x00; /* TODO: Don't hardcode! */
|
||||
|
||||
/* Convert the divcount value to a samplerate. */
|
||||
samplerate = divcount_to_samplerate(divcount);
|
||||
if (samplerate == 0xffffffffffffffffULL) {
|
||||
close(fd); /* FIXME */
|
||||
return SR_ERR;
|
||||
}
|
||||
sr_dbg("%s: samplerate is %" PRIu64, __func__, samplerate);
|
||||
|
||||
/* Send header packet to the session bus. */
|
||||
std_session_send_df_header(in->sdi, LOG_PREFIX);
|
||||
inc->started = TRUE;
|
||||
|
||||
/* Send metadata about the SR_DF_LOGIC packets to come. */
|
||||
packet.type = SR_DF_META;
|
||||
packet.payload = &meta;
|
||||
src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(samplerate));
|
||||
src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(inc->samplerate));
|
||||
meta.config = g_slist_append(NULL, src);
|
||||
sr_session_send(in->sdi, &packet);
|
||||
sr_config_free(src);
|
||||
|
||||
/* TODO: Handle trigger point. */
|
||||
|
||||
/* Send data packets to the session bus. */
|
||||
sr_dbg("%s: sending SR_DF_LOGIC data packets", __func__);
|
||||
packet.type = SR_DF_LOGIC;
|
||||
packet.payload = &logic;
|
||||
logic.unitsize = (num_channels + 7) / 8;
|
||||
logic.data = buf;
|
||||
logic.data = in->buf->str;
|
||||
|
||||
/* Send 8MB of total data to the session bus in small chunks. */
|
||||
for (i = 0; i < NUM_PACKETS; i++) {
|
||||
/* TODO: Handle errors, handle incomplete reads. */
|
||||
size = read(fd, buf, PACKET_SIZE);
|
||||
logic.length = size;
|
||||
/* Cut off at multiple of unitsize. */
|
||||
chunk_size = in->buf->len / logic.unitsize * logic.unitsize;
|
||||
|
||||
chunk = 0;
|
||||
for (i = 0; i < chunk_size; i += chunk) {
|
||||
chunk = MAX(MAX_CHUNK_SIZE, chunk_size - i);
|
||||
logic.length = chunk;
|
||||
sr_session_send(in->sdi, &packet);
|
||||
}
|
||||
close(fd); /* FIXME */
|
||||
|
||||
/* Send end packet to the session bus. */
|
||||
sr_dbg("%s: sending SR_DF_END", __func__);
|
||||
packet.type = SR_DF_END;
|
||||
packet.payload = NULL;
|
||||
sr_session_send(in->sdi, &packet);
|
||||
if (in->buf->len > chunk_size)
|
||||
g_string_erase(in->buf, 0, in->buf->len - chunk_size);
|
||||
|
||||
return SR_OK;
|
||||
}
|
||||
|
||||
static int cleanup(struct sr_input *in)
|
||||
{
|
||||
struct sr_datafeed_packet packet;
|
||||
struct context *inc;
|
||||
|
||||
inc = in->priv;
|
||||
|
||||
if (inc->started) {
|
||||
packet.type = SR_DF_END;
|
||||
sr_session_send(in->sdi, &packet);
|
||||
}
|
||||
g_free(in->priv);
|
||||
in->priv = NULL;
|
||||
|
||||
return SR_OK;
|
||||
}
|
||||
|
||||
static struct sr_option options[] = {
|
||||
{ "numchannels", "Number of channels", "Number of channels", NULL, NULL },
|
||||
{ "samplerate", "Sample rate", "Sample rate", NULL, NULL },
|
||||
{ 0 }
|
||||
};
|
||||
|
||||
static struct sr_option *get_options(void)
|
||||
{
|
||||
if (!options[0].def) {
|
||||
options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS));
|
||||
options[1].def = g_variant_ref_sink(g_variant_new_string(DEFAULT_SAMPLERATE));
|
||||
}
|
||||
|
||||
return options;
|
||||
}
|
||||
|
||||
SR_PRIV struct sr_input_module input_chronovu_la8 = {
|
||||
.id = "chronovu-la8",
|
||||
.name = "Chronovu-LA8",
|
||||
.desc = "ChronoVu LA8",
|
||||
.metadata = { SR_INPUT_META_FILESIZE | SR_INPUT_META_REQUIRED },
|
||||
.options = get_options,
|
||||
.format_match = format_match,
|
||||
.init = init,
|
||||
.loadfile = loadfile,
|
||||
.receive = receive,
|
||||
.cleanup = cleanup,
|
||||
};
|
||||
|
|
|
|||
|
|
@ -67,7 +67,7 @@ extern SR_PRIV struct sr_input_module input_wav;
|
|||
|
||||
static const struct sr_input_module *input_module_list[] = {
|
||||
&input_vcd,
|
||||
// &input_chronovu_la8,
|
||||
&input_chronovu_la8,
|
||||
&input_wav,
|
||||
&input_csv,
|
||||
/* This one has to be last, because it will take any input. */
|
||||
|
|
|
|||
Loading…
Reference in New Issue