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auparse: implement seeking

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Implement seeking and seeking query. Fixes #644512
This commit is contained in:
Chris E Jones 2011-04-20 15:25:58 -04:00 committed by Stefan Kost
parent dc2ddea91b
commit a1b7eeceb1
1 changed files with 108 additions and 9 deletions
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117
gst/auparse/gstauparse.c
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@ -78,6 +78,9 @@ static gboolean gst_au_parse_add_srcpad (GstAuParse * auparse, GstCaps * caps);
static gboolean gst_au_parse_src_query (GstPad * pad, GstQuery * query);
static gboolean gst_au_parse_src_event (GstPad * pad, GstEvent * event);
static gboolean gst_au_parse_sink_event (GstPad * pad, GstEvent * event);
static gboolean gst_au_parse_src_convert (GstAuParse * auparse,
GstFormat src_format, gint64 srcval, GstFormat dest_format,
gint64 * destval);
GST_BOILERPLATE (GstAuParse, gst_au_parse, GstElement, GST_TYPE_ELEMENT);
@ -251,7 +254,9 @@ gst_au_parse_parse_header (GstAuParse * auparse)
}
auparse->offset = GST_READ_UINT32_BE (head + 4);
/* Do not trust size, could be set to -1 : unknown */
/* Do not trust size, could be set to -1 : unknown
* otherwise: filesize = size + auparse->offset
*/
size = GST_READ_UINT32_BE (head + 8);
auparse->encoding = GST_READ_UINT32_BE (head + 12);
auparse->samplerate = GST_READ_UINT32_BE (head + 16);
@ -425,6 +430,9 @@ gst_au_parse_chain (GstPad * pad, GstBuffer * buf)
GstFlowReturn ret = GST_FLOW_OK;
GstAuParse *auparse;
gint avail, sendnow = 0;
gint64 timestamp;
gint64 duration;
gint64 offset;
auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
@ -446,7 +454,7 @@ gst_au_parse_chain (GstPad * pad, GstBuffer * buf)
goto out;
gst_pad_push_event (auparse->srcpad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_DEFAULT,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
0, GST_CLOCK_TIME_NONE, 0));
}
@ -464,6 +472,7 @@ gst_au_parse_chain (GstPad * pad, GstBuffer * buf)
if (sendnow > 0) {
GstBuffer *outbuf;
const guint8 *data;
gint64 pos;
ret = gst_pad_alloc_buffer_and_set_caps (auparse->srcpad,
auparse->buffer_offset, sendnow, GST_PAD_CAPS (auparse->srcpad),
@ -478,6 +487,22 @@ gst_au_parse_chain (GstPad * pad, GstBuffer * buf)
memcpy (GST_BUFFER_DATA (outbuf), data, sendnow);
gst_adapter_flush (auparse->adapter, sendnow);
pos = auparse->buffer_offset - auparse->offset;
pos = MAX (pos, 0);
if (auparse->sample_size > 0 && auparse->samplerate > 0) {
gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, pos,
GST_FORMAT_DEFAULT, &offset);
gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, pos,
GST_FORMAT_TIME, &timestamp);
gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES,
sendnow, GST_FORMAT_TIME, &duration);
GST_BUFFER_OFFSET (outbuf) = offset;
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = duration;
}
auparse->buffer_offset += sendnow;
ret = gst_pad_push (auparse->srcpad, outbuf);
@ -517,6 +542,9 @@ gst_au_parse_src_convert (GstAuParse * auparse, GstFormat src_format,
/* fallthrough */
case GST_FORMAT_DEFAULT:{
switch (dest_format) {
case GST_FORMAT_DEFAULT:
*destval = srcval;
break;
case GST_FORMAT_BYTES:
*destval = srcval * samplesize;
break;
@ -532,8 +560,8 @@ gst_au_parse_src_convert (GstAuParse * auparse, GstFormat src_format,
case GST_FORMAT_TIME:{
switch (dest_format) {
case GST_FORMAT_BYTES:
*destval =
gst_util_uint64_scale_int (srcval, rate * samplesize, GST_SECOND);
*destval = samplesize *
gst_util_uint64_scale_int (srcval, rate, GST_SECOND);
break;
case GST_FORMAT_DEFAULT:
*destval = gst_util_uint64_scale_int (srcval, rate, GST_SECOND);
@ -581,8 +609,7 @@ gst_au_parse_src_query (GstPad * pad, GstQuery * query)
len -= auparse->offset;
GST_OBJECT_UNLOCK (auparse);
ret = gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, len,
format, &val);
ret = gst_au_parse_src_convert (auparse, bformat, len, format, &val);
if (ret) {
gst_query_set_duration (query, format, val);
@ -611,6 +638,17 @@ gst_au_parse_src_query (GstPad * pad, GstQuery * query)
}
break;
}
case GST_QUERY_SEEKING:{
GstFormat format;
gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
/* FIXME: query duration in 'format'
gst_query_set_seeking (query, format, TRUE, 0, duration);
*/
gst_query_set_seeking (query, format, TRUE, 0, GST_CLOCK_TIME_NONE);
ret = TRUE;
break;
}
default:
ret = gst_pad_query_default (pad, query);
break;
@ -628,6 +666,7 @@ gst_au_parse_handle_seek (GstAuParse * auparse, GstEvent * event)
GstFormat format;
gdouble rate;
gint64 start, stop;
gboolean res;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
@ -637,19 +676,79 @@ gst_au_parse_handle_seek (GstAuParse * auparse, GstEvent * event)
return FALSE;
}
/* FIXME: implement seeking */
return FALSE;
res = gst_au_parse_src_convert (auparse, GST_FORMAT_TIME, start,
GST_FORMAT_BYTES, &start);
if (stop > 0) {
res = gst_au_parse_src_convert (auparse, GST_FORMAT_TIME, stop,
GST_FORMAT_BYTES, &stop);
}
GST_INFO_OBJECT (auparse,
"seeking: %" G_GINT64_FORMAT " ... %" G_GINT64_FORMAT, start, stop);
event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, start_type, start,
stop_type, stop);
res = gst_pad_push_event (auparse->sinkpad, event);
return res;
}
static gboolean
gst_au_parse_sink_event (GstPad * pad, GstEvent * event)
{
GstAuParse *auparse;
gboolean ret;
gboolean ret = TRUE;
auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:
{
GstFormat format;
gdouble rate, arate;
gint64 start, stop, time, offset = 0;
gboolean update;
GstSegment segment;
GstEvent *new_event = NULL;
gst_segment_init (&segment, GST_FORMAT_UNDEFINED);
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
&start, &stop, &time);
gst_segment_set_newsegment_full (&segment, update, rate, arate, format,
start, stop, time);
if (auparse->sample_size > 0) {
if (start > 0) {
offset = start;
start -= auparse->offset;
start = MAX (start, 0);
}
if (stop > 0) {
stop -= auparse->offset;
stop = MAX (stop, 0);
}
gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, start,
GST_FORMAT_TIME, &start);
gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, stop,
GST_FORMAT_TIME, &stop);
}
if (auparse->srcpad) {
GST_INFO_OBJECT (auparse,
"new segment: %" GST_TIME_FORMAT " ... %" GST_TIME_FORMAT,
GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
new_event = gst_event_new_new_segment_full (update, rate, arate,
GST_FORMAT_TIME, start, stop, start);
ret = gst_pad_push_event (auparse->srcpad, new_event);
}
auparse->buffer_offset = offset;
gst_event_unref (event);
break;
}
default:
ret = gst_pad_event_default (pad, event);
break;