/*
* TODO
*
- * - Add support for analog input data? (optional)
- * - Extend the set of supported column types. Just grab a double
- * value from floating point format input text.
+ * - Extend support for analog input data? (optional)
* - Optionally get precision ('digits') from the column's format spec?
* From the position which is "bit count" for logic channels?
+ * - Determine why analog samples of 'double' data type get scrambled
+ * in sigrok-cli screen output. Is analog.encoding->unitsize not
+ * handled properly? A sigrok-cli or libsigrok (src/output) issue?
* - Optionally get sample rate from timestamp column. Just best-effort
* approach, not necessarily reliable. Users can always specify rates.
* - Add a test suite for input modules in general, and CSV in specific?
* samplerates, etc).
*/
+typedef float csv_analog_t; /* 'double' currently is flawed. */
+
/* Single column formats. */
enum single_col_format {
FORMAT_NONE, /* Ignore this column. */
FORMAT_BIN, /* Bin digits for a set of bits (or just one bit). */
FORMAT_HEX, /* Hex digits for a set of bits. */
FORMAT_OCT, /* Oct digits for a set of bits. */
+ FORMAT_ANALOG, /* Floating point number for an analog channel. */
};
static const char *col_format_text[] = {
[FORMAT_BIN] = "binary",
[FORMAT_HEX] = "hexadecimal",
[FORMAT_OCT] = "octal",
+ [FORMAT_ANALOG] = "analog",
};
static const char col_format_char[] = {
[FORMAT_BIN] = 'b',
[FORMAT_HEX] = 'x',
[FORMAT_OCT] = 'o',
+ [FORMAT_ANALOG] = 'a',
};
struct column_details {
uint64_t samplerate;
gboolean samplerate_sent;
- /* Number of logic channels. */
+ /* Number of logic channels. List of names for analog datafeed. */
size_t logic_channels;
+ size_t analog_channels;
+ GSList **analog_datafeed_channels;
/* Column delimiter (actually separator), comment leader, EOL sequence. */
GString *delimiter;
size_t sample_unit_size; /**!< Byte count for a single sample. */
uint8_t *sample_buffer; /**!< Buffer for a single sample. */
+ csv_analog_t *analog_sample_buffer; /**!< Buffer for one set of analog values. */
uint8_t *datafeed_buffer; /**!< Queue for datafeed submission. */
size_t datafeed_buf_size;
size_t datafeed_buf_fill;
+ /* "Striped" layout, M samples for N channels each. */
+ csv_analog_t *analog_datafeed_buffer; /**!< Queue for analog datafeed. */
+ size_t analog_datafeed_buf_size;
+ size_t analog_datafeed_buf_fill;
/* Current line number. */
size_t line_number;
* (when it is full, or upon EOF).
*/
+static int flush_samplerate(const struct sr_input *in)
+{
+ struct context *inc;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_meta meta;
+ struct sr_config *src;
+
+ inc = in->priv;
+ if (inc->samplerate && !inc->samplerate_sent) {
+ packet.type = SR_DF_META;
+ packet.payload = &meta;
+ 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);
+ g_slist_free(meta.config);
+ sr_config_free(src);
+ inc->samplerate_sent = TRUE;
+ }
+
+ return SR_OK;
+}
+
static void clear_logic_samples(struct context *inc)
{
+ if (!inc->logic_channels)
+ return;
inc->sample_buffer = &inc->datafeed_buffer[inc->datafeed_buf_fill];
memset(inc->sample_buffer, 0, inc->sample_unit_size);
}
{
struct context *inc;
struct sr_datafeed_packet packet;
- struct sr_datafeed_meta meta;
- struct sr_config *src;
struct sr_datafeed_logic logic;
int rc;
if (!inc->datafeed_buf_fill)
return SR_OK;
- if (inc->samplerate && !inc->samplerate_sent) {
- packet.type = SR_DF_META;
- packet.payload = &meta;
- 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);
- g_slist_free(meta.config);
- sr_config_free(src);
- inc->samplerate_sent = TRUE;
- }
+ rc = flush_samplerate(in);
+ if (rc != SR_OK)
+ return rc;
memset(&packet, 0, sizeof(packet));
memset(&logic, 0, sizeof(logic));
return SR_OK;
}
+static void set_analog_value(struct context *inc, size_t ch_idx, csv_analog_t value);
+
+static void clear_analog_samples(struct context *inc)
+{
+ size_t idx;
+
+ if (!inc->analog_channels)
+ return;
+ inc->analog_sample_buffer = &inc->analog_datafeed_buffer[inc->analog_datafeed_buf_fill];
+ for (idx = 0; idx < inc->analog_channels; idx++)
+ set_analog_value(inc, idx, 0.0);
+}
+
+static void set_analog_value(struct context *inc, size_t ch_idx, csv_analog_t value)
+{
+ if (ch_idx >= inc->analog_channels)
+ return;
+ if (!value)
+ return;
+ inc->analog_sample_buffer[ch_idx * inc->analog_datafeed_buf_size] = value;
+}
+
+static int flush_analog_samples(const struct sr_input *in)
+{
+ /* TODO Use proper 'digits' value for this input module. */
+ static const int digits = 3;
+
+ struct context *inc;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog analog;
+ struct sr_analog_encoding encoding;
+ struct sr_analog_meaning meaning;
+ struct sr_analog_spec spec;
+ csv_analog_t *samples;
+ size_t ch_idx;
+ int rc;
+
+ inc = in->priv;
+ if (!inc->analog_datafeed_buf_fill)
+ return SR_OK;
+
+ rc = flush_samplerate(in);
+ if (rc != SR_OK)
+ return rc;
+
+ samples = inc->analog_datafeed_buffer;
+ for (ch_idx = 0; ch_idx < inc->analog_channels; ch_idx++) {
+ sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
+ memset(&packet, 0, sizeof(packet));
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ analog.num_samples = inc->analog_datafeed_buf_fill;
+ analog.data = samples;
+ analog.meaning->channels = inc->analog_datafeed_channels[ch_idx];
+ analog.meaning->mq = 0;
+ analog.meaning->mqflags = 0;
+ analog.meaning->unit = 0;
+ analog.encoding->unitsize = sizeof(samples[0]);
+ analog.encoding->is_signed = TRUE;
+ analog.encoding->is_float = TRUE;
+#ifdef WORDS_BIGENDIAN
+ analog.encoding->is_bigendian = TRUE;
+#else
+ analog.encoding->is_bigendian = FALSE;
+#endif
+ analog.encoding->digits = spec.spec_digits;
+ rc = sr_session_send(in->sdi, &packet);
+ if (rc != SR_OK)
+ return rc;
+ samples += inc->analog_datafeed_buf_size;
+ }
+
+ inc->analog_datafeed_buf_fill = 0;
+ return SR_OK;
+}
+
+static int queue_analog_samples(const struct sr_input *in)
+{
+ struct context *inc;
+ int rc;
+
+ inc = in->priv;
+ if (!inc->analog_channels)
+ return SR_OK;
+
+ inc->analog_datafeed_buf_fill++;
+ if (inc->analog_datafeed_buf_fill == inc->analog_datafeed_buf_size) {
+ rc = flush_analog_samples(in);
+ if (rc != SR_OK)
+ return rc;
+ }
+ return SR_OK;
+}
+
/* Helpers for "column processing". */
static int split_column_format(const char *spec,
case 'l':
format_code = FORMAT_BIN;
break;
+ case 'a':
+ format_code = FORMAT_ANALOG;
+ break;
default: /* includes NUL */
return SR_ERR_ARG;
}
return SR_ERR_ARG;
if (endp == spec)
count = 1;
- if (format_char == '-')
+ if (!format_code)
count = 0;
if (format_char == 'l')
count = 1;
+ if (format_code == FORMAT_ANALOG)
+ count = 1;
if (bit_count)
*bit_count = count;
spec = endp;
{
struct context *inc;
char **formats, *format;
- size_t format_count, column_count, bit_count;
+ size_t format_count, column_count, logic_count, analog_count;
size_t auto_column_count;
- size_t format_idx, c, b, column_idx, channel_idx;
+ size_t format_idx, c, b, column_idx, channel_idx, analog_idx;
enum single_col_format f;
struct column_details *detail;
GString *channel_name;
size_t create_idx;
char *column;
const char *caption;
+ int channel_type, channel_sdi_nr;
int ret;
inc = in->priv;
g_strfreev(formats);
return SR_ERR_ARG;
}
- column_count = bit_count = 0;
+ column_count = logic_count = analog_count = 0;
auto_column_count = 0;
for (format_idx = 0; format_idx < format_count; format_idx++) {
format = formats[format_idx];
c = auto_column_count;
}
column_count += c;
- bit_count += c * b;
+ if (f == FORMAT_ANALOG)
+ analog_count += c;
+ else if (f)
+ logic_count += c * b;
}
- sr_dbg("Column format %s -> %zu columns, %zu logic channels.",
- column_format, column_count, bit_count);
+ sr_dbg("Column format %s -> %zu columns, %zu logic, %zu analog channels.",
+ column_format, column_count, logic_count, analog_count);
/* Allocate and fill in "column processing" details. Create channels. */
inc->column_want_count = column_count;
return SR_ERR_ARG;
}
inc->column_details = g_malloc0_n(column_count, sizeof(inc->column_details[0]));
- column_idx = channel_idx = 0;
+ column_idx = channel_idx = analog_idx = 0;
channel_name = g_string_sized_new(64);
for (format_idx = 0; format_idx < format_count; format_idx++) {
/* Process a format field, which can span multiple columns. */
detail = &inc->column_details[column_idx++];
detail->col_nr = column_idx;
detail->text_format = f;
- if (detail->text_format) {
+ if (detail->text_format == FORMAT_ANALOG) {
+ detail->channel_offset = analog_idx;
+ detail->channel_count = 1;
+ analog_idx += detail->channel_count;
+ } else if (detail->text_format) {
detail->channel_offset = channel_idx;
detail->channel_count = b;
- channel_idx += b;
+ channel_idx += detail->channel_count;
}
sr_dbg("detail -> col %zu, fmt %s, ch off/cnt %zu/%zu",
detail->col_nr, col_format_text[detail->text_format],
g_string_printf(channel_name, "%zu",
detail->channel_offset + create_idx);
}
- sr_channel_new(in->sdi, detail->channel_offset + create_idx,
- SR_CHANNEL_LOGIC, TRUE, channel_name->str);
+ if (detail->text_format == FORMAT_ANALOG) {
+ channel_sdi_nr = logic_count + detail->channel_offset + create_idx;
+ channel_type = SR_CHANNEL_ANALOG;
+ } else {
+ channel_sdi_nr = detail->channel_offset + create_idx;
+ channel_type = SR_CHANNEL_LOGIC;
+ }
+ sr_channel_new(in->sdi, channel_sdi_nr,
+ channel_type, TRUE, channel_name->str);
}
}
}
inc->logic_channels = channel_idx;
+ inc->analog_channels = analog_idx;
g_string_free(channel_name, TRUE);
g_strfreev(formats);
ch_rem--;
set_logic_level(inc, ch_idx + 0, bits & (1 << 0));
break;
+ case FORMAT_ANALOG:
case FORMAT_NONE:
/* ShouldNotHappen(TM), but silences compiler warning. */
return SR_ERR;
return SR_OK;
}
+/**
+ * @brief Parse a floating point text into an analog value.
+ *
+ * @param[in] column The input text, a floating point number.
+ * @param[in] inc The input module's context.
+ * @param[in] details The column processing details.
+ *
+ * @retval SR_OK Success.
+ * @retval SR_ERR Invalid input data (empty, or format error).
+ *
+ * This routine modifies the analog values in the current sample set,
+ * based on the text input and a user provided format spec.
+ */
+static int parse_analog(const char *column, struct context *inc,
+ const struct column_details *details)
+{
+ size_t length;
+ double dvalue; float fvalue;
+ csv_analog_t value;
+ int ret;
+
+ if (details->text_format != FORMAT_ANALOG)
+ return SR_ERR_BUG;
+
+ length = strlen(column);
+ if (!length) {
+ sr_err("Column %zu in line %zu is empty.", details->col_nr,
+ inc->line_number);
+ return SR_ERR;
+ }
+ if (sizeof(value) == sizeof(double)) {
+ ret = sr_atod_ascii(column, &dvalue);
+ value = dvalue;
+ } else if (sizeof(value) == sizeof(float)) {
+ ret = sr_atof_ascii(column, &fvalue);
+ value = fvalue;
+ } else {
+ ret = SR_ERR_BUG;
+ }
+ if (ret != SR_OK) {
+ sr_err("Cannot parse analog text %s in column %zu in line %zu.",
+ column, details->col_nr, inc->line_number);
+ return SR_ERR_DATA;
+ }
+ set_analog_value(inc, details->channel_offset, value);
+
+ return SR_OK;
+}
+
/**
* @brief Parse routine which ignores the input text.
*
[FORMAT_BIN] = parse_logic,
[FORMAT_OCT] = parse_logic,
[FORMAT_HEX] = parse_logic,
+ [FORMAT_ANALOG] = parse_analog,
};
static int init(struct sr_input *in, GHashTable *options)
{
struct context *inc;
size_t num_columns;
- size_t line_number, line_idx;
+ size_t line_number, line_idx, ch_idx;
int ret;
char **lines, *line, **columns;
* Allocate the larger buffer, the "sample buffer" will point
* to a location within that large buffer later.
*/
- inc->sample_unit_size = (inc->logic_channels + 7) / 8;
- inc->datafeed_buf_size = CHUNK_SIZE;
- inc->datafeed_buf_size *= inc->sample_unit_size;
- inc->datafeed_buffer = g_malloc(inc->datafeed_buf_size);
- inc->datafeed_buf_fill = 0;
+ if (inc->logic_channels) {
+ inc->sample_unit_size = (inc->logic_channels + 7) / 8;
+ inc->datafeed_buf_size = CHUNK_SIZE;
+ inc->datafeed_buf_size *= inc->sample_unit_size;
+ inc->datafeed_buffer = g_malloc(inc->datafeed_buf_size);
+ if (!inc->datafeed_buffer) {
+ sr_err("Cannot allocate datafeed send buffer (logic).");
+ ret = SR_ERR_MALLOC;
+ goto out;
+ }
+ inc->datafeed_buf_fill = 0;
+ }
+
+ if (inc->analog_channels) {
+ size_t sample_size, sample_count;
+ sample_size = sizeof(inc->analog_datafeed_buffer[0]);
+ inc->analog_datafeed_buf_size = CHUNK_SIZE;
+ inc->analog_datafeed_buf_size /= sample_size;
+ inc->analog_datafeed_buf_size /= inc->analog_channels;
+ sample_count = inc->analog_channels * inc->analog_datafeed_buf_size;
+ inc->analog_datafeed_buffer = g_malloc0(sample_count * sample_size);
+ if (!inc->analog_datafeed_buffer) {
+ sr_err("Cannot allocate datafeed send buffer (analog).");
+ ret = SR_ERR_MALLOC;
+ goto out;
+ }
+ inc->analog_datafeed_buf_fill = 0;
+ inc->analog_datafeed_channels = g_malloc0_n(inc->analog_channels, sizeof(inc->analog_datafeed_channels[0]));
+ for (ch_idx = 0; ch_idx < inc->analog_channels; ch_idx++) {
+ void *channel;
+ channel = g_slist_nth_data(in->sdi->channels, inc->logic_channels + ch_idx);
+ inc->analog_datafeed_channels[ch_idx] = g_slist_append(NULL, channel);
+ }
+ }
out:
if (columns)
/* Have the columns of the current text line processed. */
clear_logic_samples(inc);
+ clear_analog_samples(inc);
for (col_idx = 0; col_idx < inc->column_want_count; col_idx++) {
column = columns[col_idx];
col_nr = col_idx + 1;
/* Send sample data to the session bus (buffered). */
ret = queue_logic_samples(in);
+ ret += queue_analog_samples(in);
if (ret != SR_OK) {
sr_err("Sending samples failed.");
g_strfreev(columns);
return ret;
ret = flush_logic_samples(in);
+ ret += flush_analog_samples(in);
if (ret != SR_OK)
return ret;
inc->termination = NULL;
g_free(inc->datafeed_buffer);
inc->datafeed_buffer = NULL;
+ g_free(inc->analog_datafeed_buffer);
+ inc->analog_datafeed_buffer = NULL;
}
static int reset(struct sr_input *in)
projects / libsigrok.git / commitdiff