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demo: Fix analog output at low samplerate.

This commit is contained in:
Aurelien Jacobs 2014-11-17 11:38:37 +01:00 committed by Bert Vermeulen
parent 3772c04990
commit 62f155f0c7
1 changed files with 4 additions and 7 deletions
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11
src/hardware/demo/demo.c
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@ -671,6 +671,7 @@ static int prepare_data(int fd, int revents, void *cb_data)
struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic;
struct analog_gen *ag;
int ag_pattern_pos;
GHashTableIter iter;
void *value;
uint64_t logic_todo, analog_todo, expected_samplenum, analog_sent, sending_now;
@ -722,13 +723,9 @@ static int prepare_data(int fd, int revents, void *cb_data)
ag = value;
packet.type = SR_DF_ANALOG;
packet.payload = &ag->packet;
/* FIXME we should make sure we output a whole
* period of data before we send out again the
* beginning of our buffer. A ring buffer would
* help here as well */
sending_now = MIN(analog_todo, ag->num_samples);
ag_pattern_pos = devc->analog_counter % ag->num_samples;
sending_now = MIN(analog_todo, ag->num_samples-ag_pattern_pos);
ag->packet.data = ag->pattern_data + ag_pattern_pos;
ag->packet.num_samples = sending_now;
sr_session_send(sdi, &packet);