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rtpdtmfsrc: Put the inter digit interval at the end, not at the start

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The reason is to let rtpdtmfmux drop buffers during the inter digit interval,
this way, there will be more silence around the DTMF tones so IVFs will have
a better chance recognizing them.
This commit is contained in:
Olivier Crête 2011-07-11 20:46:20 -04:00
parent 7837cc25fb
commit e6c431a533
1 changed files with 13 additions and 3 deletions
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16
gst/dtmf/gstrtpdtmfsrc.c
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@ -514,8 +514,7 @@ gst_rtp_dtmf_prepare_timestamps (GstRTPDTMFSrc * dtmfsrc)
if (clock == NULL)
return FALSE;
dtmfsrc->timestamp = gst_clock_get_time (clock)
+ (MIN_INTER_DIGIT_INTERVAL * GST_MSECOND)
dtmfsrc->start_timestamp = gst_clock_get_time (clock)
- gst_element_get_base_time (GST_ELEMENT (dtmfsrc));
dtmfsrc->start_timestamp = dtmfsrc->timestamp;
gst_object_unref (clock);
@ -591,7 +590,6 @@ gst_rtp_dtmf_prepare_buffer_data (GstRTPDTMFSrc * dtmfsrc, GstBuffer * buf)
GST_BUFFER_DURATION (buf) = dtmfsrc->ptime * GST_MSECOND;
GST_BUFFER_TIMESTAMP (buf) = dtmfsrc->timestamp;
dtmfsrc->timestamp += GST_BUFFER_DURATION (buf);
payload = (GstRTPDTMFPayload *) gst_rtp_buffer_get_payload (buf);
@ -606,6 +604,18 @@ gst_rtp_dtmf_prepare_buffer_data (GstRTPDTMFSrc * dtmfsrc, GstBuffer * buf)
if (dtmfsrc->redundancy_count == 0)
dtmfsrc->payload->duration += dtmfsrc->ptime * dtmfsrc->clock_rate / 1000;
if (dtmfsrc->redundancy_count == 0 && dtmfsrc->last_packet) {
GstClockTime inter_digit_interval = MIN_INTER_DIGIT_INTERVAL;
if (inter_digit_interval % dtmfsrc->ptime != 0)
inter_digit_interval += dtmfsrc->ptime -
(MIN_INTER_DIGIT_INTERVAL % dtmfsrc->ptime);
GST_BUFFER_DURATION (buf) += inter_digit_interval * GST_MSECOND;
}
if (GST_CLOCK_TIME_IS_VALID (dtmfsrc->timestamp))
dtmfsrc->timestamp += GST_BUFFER_DURATION (buf);
}
static GstBuffer *