mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-10 03:19:40 +00:00
Code Issues 1 Projects Releases Wiki Activity

- Added seek on bytes

Browse source 
Original commit message from CVS:
- Added seek on bytes
- use index to lookup offsets
This commit is contained in:
Wim Taymans 2002-12-23 00:35:24 +00:00
parent d9bf04bce7
commit b9072f711a
1 changed files with 40 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

53
gst/mpegstream/gstmpegparse.c
View file

@ -351,7 +351,7 @@ gst_mpeg_parse_parse_packhead (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
scr = scr_adj; scr = scr_adj;
} }
if (mpeg_parse->index) { if (mpeg_parse->index && GST_INDEX_IS_WRITABLE (mpeg_parse->index)) {
/* update index if any */ /* update index if any */
gst_index_add_association (mpeg_parse->index, mpeg_parse->index_id, gst_index_add_association (mpeg_parse->index, mpeg_parse->index_id,
GST_ACCOCIATION_FLAG_KEY_UNIT, GST_ACCOCIATION_FLAG_KEY_UNIT,
@ -514,6 +514,7 @@ const GstFormat*
gst_mpeg_parse_get_src_formats (GstPad *pad) gst_mpeg_parse_get_src_formats (GstPad *pad)
{ {
static const GstFormat formats[] = { static const GstFormat formats[] = {
GST_FORMAT_BYTES,
GST_FORMAT_TIME, GST_FORMAT_TIME,
0 0
}; };
@ -603,10 +604,28 @@ gst_mpeg_parse_get_src_event_masks (GstPad *pad)
return masks; return masks;
} }
static gboolean
seek_index (GstMPEGParse *parse, GstEvent *event, guint64 *offset)
{
GstIndexEntry *entry;
entry = gst_index_get_assoc_entry (parse->index, parse->index_id,
GST_INDEX_LOOKUP_BEFORE,
GST_EVENT_SEEK_FORMAT (event),
GST_EVENT_SEEK_OFFSET (event));
if (!entry)
return FALSE;
if (gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, offset)) {
return TRUE;
}
return FALSE;
}
gboolean gboolean
gst_mpeg_parse_handle_src_event (GstPad *pad, GstEvent *event) gst_mpeg_parse_handle_src_event (GstPad *pad, GstEvent *event)
{ {
gboolean res = TRUE; gboolean res = FALSE;
GstMPEGParse *mpeg_parse = GST_MPEG_PARSE (gst_pad_get_parent (pad)); GstMPEGParse *mpeg_parse = GST_MPEG_PARSE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) { switch (GST_EVENT_TYPE (event)) {
@ -614,28 +633,36 @@ gst_mpeg_parse_handle_src_event (GstPad *pad, GstEvent *event)
{ {
guint64 desired_offset; guint64 desired_offset;
if (GST_EVENT_SEEK_FORMAT (event) != GST_FORMAT_TIME) { switch (GST_EVENT_SEEK_FORMAT (event)) {
gst_event_unref (event); case GST_FORMAT_BYTES:
return FALSE; if (mpeg_parse->index) {
if (!seek_index (mpeg_parse, event, &desired_offset)) {
goto done;
}
}
else {
desired_offset = GST_EVENT_SEEK_OFFSET (event);
}
break;
case GST_FORMAT_TIME:
desired_offset = mpeg_parse->mux_rate * 50 * GST_EVENT_SEEK_OFFSET (event) / (GST_SECOND);
break;
default:
goto done;
} }
if (GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH) {
}
desired_offset = mpeg_parse->mux_rate * 50 * GST_EVENT_SEEK_OFFSET (event) / (GST_SECOND);
if (!gst_bytestream_seek (mpeg_parse->packetize->bs, desired_offset, GST_SEEK_METHOD_SET)) { if (!gst_bytestream_seek (mpeg_parse->packetize->bs, desired_offset, GST_SEEK_METHOD_SET)) {
gst_event_unref (event); goto done;
return FALSE;
} }
mpeg_parse->discont_pending = TRUE; mpeg_parse->discont_pending = TRUE;
mpeg_parse->scr_pending = TRUE; mpeg_parse->scr_pending = TRUE;
res = TRUE;
break; break;
} }
default: default:
res = FALSE;
break; break;
} }
done:
gst_event_unref (event); gst_event_unref (event);
return res; return res;
} }