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legacyh264parse: Delay pushing buffers until we have width/height

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This commit is contained in:
Edward Hervey 2011-05-19 12:55:30 +02:00
parent 45e87e8cce
commit 219c90ce34
1 changed files with 33 additions and 1 deletions
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34
gst/h264parse/gsth264parse.c
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@ -1602,6 +1602,8 @@ gst_h264_parse_push_codec_buffer (GstH264Parse * h264parse, GstBuffer * nal,
static GstFlowReturn
gst_h264_parse_push_buffer (GstH264Parse * h264parse, GstBuffer * buf)
{
GstFlowReturn res = GST_FLOW_OK;
/* We can send pending events if this is the first call, since we now have
* caps for the srcpad */
if (G_UNLIKELY (h264parse->pending_segment != NULL)) {
@ -1619,6 +1621,33 @@ gst_h264_parse_push_buffer (GstH264Parse * h264parse, GstBuffer * buf)
}
}
if (G_UNLIKELY (h264parse->width == 0 || h264parse->height == 0)) {
GST_DEBUG ("Delaying actual push until we are configured");
h264parse->gather = g_list_append (h264parse->gather, buf);
goto beach;
}
if (G_UNLIKELY (h264parse->gather)) {
GList *pendingbuffers = h264parse->gather;
GList *tmp;
GST_DEBUG ("Pushing out pending buffers");
/* Yes, we're recursively calling in... */
h264parse->gather = NULL;
for (tmp = pendingbuffers; tmp; tmp = tmp->next) {
res = gst_h264_parse_push_buffer (h264parse, (GstBuffer *) tmp->data);
if (res != GST_FLOW_OK && res != GST_FLOW_NOT_LINKED)
break;
}
g_list_free (pendingbuffers);
if (res != GST_FLOW_OK && res != GST_FLOW_NOT_LINKED) {
gst_buffer_unref (buf);
goto beach;
}
}
/* start of picture is good time to slip in codec_data NALUs
* (when outputting NALS and transforming to bytestream) */
if (G_UNLIKELY (h264parse->codec_nals && h264parse->picture_start)) {
@ -1740,7 +1769,10 @@ gst_h264_parse_push_buffer (GstH264Parse * h264parse, GstBuffer * buf)
}
gst_buffer_set_caps (buf, h264parse->src_caps);
return gst_pad_push (h264parse->srcpad, buf);
res = gst_pad_push (h264parse->srcpad, buf);
beach:
return res;
}
/* takes over ownership of nal and returns fresh buffer */