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input/csv: re-calculate samplerate after file re-import 

Don't clobber the user provided samplerate (specified by input module
options). This allows to re-determine the samplerate from a potentially
changed file on disk upon reload.
This commit is contained in:
Gerhard Sittig 2019-10-19 21:20:36 +02:00
parent 307b239390
commit 811dcf7ea9
1 changed files with 8 additions and 5 deletions
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13
src/input/csv.c
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@ -210,6 +210,7 @@ struct context {
/* Current samplerate, optionally determined from input data. */
uint64_t samplerate;
uint64_t calc_samplerate;
double prev_timestamp;
gboolean samplerate_sent;
@ -281,10 +282,12 @@ static int flush_samplerate(const struct sr_input *in)
struct sr_config *src;
inc = in->priv;
if (inc->samplerate && !inc->samplerate_sent) {
if (!inc->calc_samplerate && inc->samplerate)
inc->calc_samplerate = inc->samplerate;
if (inc->calc_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));
src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(inc->calc_samplerate));
meta.config = g_slist_append(NULL, src);
sr_session_send(in->sdi, &packet);
g_slist_free(meta.config);
@ -973,13 +976,13 @@ static int parse_timestamp(const char *column, struct context *inc,
* reduced rounding errors which result in odd rates.
* - Support other formats ("2 ms" or similar)?
*/
if (inc->samplerate)
if (inc->calc_samplerate)
return SR_OK;
ret = sr_atod_ascii(column, &ts);
if (ret != SR_OK)
ts = 0.0;
if (!ts) {
sr_warn("Cannot convert timestamp text %s in line %zu (or zero value).",
sr_info("Cannot convert timestamp text %s in line %zu (or zero value).",
column, inc->line_number);
inc->prev_timestamp = 0.0;
return SR_OK;
@ -1004,7 +1007,7 @@ static int parse_timestamp(const char *column, struct context *inc,
rate += 0.5;
rate = (uint64_t)rate;
sr_dbg("Rate from timestamp %g in line %zu.", rate, inc->line_number);
inc->samplerate = rate;
inc->calc_samplerate = rate;
inc->prev_timestamp = 0.0;
return SR_OK;