static GstFlowReturn
gst_kate_parse_push_headers (GstKateParse * parse)
{
/* mark and put on caps */
GstCaps *caps;
GstBuffer *outbuf;
kate_packet packet;
GList *headers, *outbuf_list = NULL;
int ret;
gboolean res;
/* get the headers into the caps, passing them to kate as we go */
caps =
gst_kate_util_set_header_on_caps (&parse->element,
gst_pad_get_current_caps (parse->sinkpad), parse->streamheader);
if (G_UNLIKELY (!caps)) {
GST_ELEMENT_ERROR (parse, STREAM, DECODE, (NULL),
("Failed to set headers on caps"));
return GST_FLOW_ERROR;
}
GST_DEBUG_OBJECT (parse, "here are the caps: %" GST_PTR_FORMAT, caps);
res = gst_pad_set_caps (parse->srcpad, caps);
gst_caps_unref (caps);
if (G_UNLIKELY (!res)) {
GST_WARNING_OBJECT (parse->srcpad, "Failed to set caps on source pad");
return GST_FLOW_NOT_NEGOTIATED;
}
headers = parse->streamheader;
while (headers) {
GstMapInfo info;
outbuf = GST_BUFFER_CAST (headers->data);
if (!gst_buffer_map (outbuf, &info, GST_MAP_READ)) {
GST_WARNING_OBJECT (outbuf, "Failed to map buffer");
continue;
}
kate_packet_wrap (&packet, info.size, info.data);
ret = kate_decode_headerin (&parse->ki, &parse->kc, &packet);
if (G_UNLIKELY (ret < 0)) {
GST_WARNING_OBJECT (parse, "Failed to decode header: %s",
gst_kate_util_get_error_message (ret));
}
gst_buffer_unmap (outbuf, &info);
/* takes ownership of outbuf, which was previously in parse->streamheader */
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_HEADER);
outbuf_list = g_list_append (outbuf_list, outbuf);
headers = headers->next;
}
/* first process queued events */
gst_kate_parse_drain_event_queue (parse);
/* push out buffers, ignoring return value... */
headers = outbuf_list;
while (headers) {
outbuf = GST_BUFFER_CAST (headers->data);
gst_pad_push (parse->srcpad, outbuf);
headers = headers->next;
}
g_list_free (outbuf_list);
g_list_free (parse->streamheader);
parse->streamheader = NULL;
parse->streamheader_sent = TRUE;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_kate_enc_send_headers (GstKateEnc * ke)
{
GstFlowReturn rflow = GST_FLOW_OK;
GstCaps *caps;
GList *headers = NULL, *item;
if (G_UNLIKELY (ke->category == NULL || *ke->category == '\0')) {
/* The error code is a bit of a lie, but seems most appropriate. */
GST_ELEMENT_ERROR (ke, LIBRARY, SETTINGS, (NULL),
("The 'category' property must be set. For subtitles, set it to "
"either 'SUB' (text subtitles) or 'K-SPU' (dvd-style subtitles)"));
return GST_FLOW_ERROR;
}
gst_kate_enc_set_metadata (ke);
/* encode headers and store them in a list */
while (1) {
kate_packet kp;
int ret = kate_encode_headers (&ke->k, &ke->kc, &kp);
if (ret == 0) {
GstBuffer *buffer;
buffer = gst_kate_enc_create_buffer (ke, &kp, 0, 0, 0, TRUE);
if (!buffer) {
GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
("Failed to create buffer, %u bytes", (guint) kp.nbytes));
rflow = GST_FLOW_ERROR;
break;
}
kate_packet_clear (&kp);
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_HEADER);
headers = g_list_append (headers, buffer);
} else if (ret > 0) {
GST_LOG_OBJECT (ke, "Last header encoded");
break;
} else {
GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
("Failed encoding headers: %s",
gst_kate_util_get_error_message (ret)));
rflow = GST_FLOW_ERROR;
break;
}
}
if (rflow == GST_FLOW_OK) {
if (gst_kate_enc_is_simple_subtitle_category (ke, ke->category)) {
caps = gst_kate_util_set_header_on_caps (&ke->element,
gst_caps_from_string ("subtitle/x-kate"), headers);
} else {
caps = gst_kate_util_set_header_on_caps (&ke->element,
gst_caps_from_string ("application/x-kate"), headers);
}
if (caps) {
GST_DEBUG_OBJECT (ke, "here are the caps: %" GST_PTR_FORMAT, caps);
gst_pad_set_caps (ke->srcpad, caps);
gst_caps_unref (caps);
if (ke->pending_segment)
gst_pad_push_event (ke->srcpad, ke->pending_segment);
ke->pending_segment = NULL;
GST_LOG_OBJECT (ke, "pushing headers");
item = headers;
while (item) {
GstBuffer *buffer = item->data;
GST_LOG_OBJECT (ke, "pushing header %p", buffer);
gst_kate_enc_push_buffer (ke, buffer);
item = item->next;
}
} else {
GST_ERROR_OBJECT (ke, "Failed to set headers on caps");
}
}
g_list_free (headers);
return rflow;
}
