static void
gst_jasper_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstJasperEnc *filter;
filter = GST_JASPER_ENC (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstFlowReturn
gst_jasper_enc_chain (GstPad * pad, GstBuffer * buf)
{
GstJasperEnc *enc;
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *outbuf = NULL;
guint8 *data;
gboolean discont = FALSE;
enc = GST_JASPER_ENC (gst_pad_get_parent (pad));
if (enc->fmt < 0)
goto not_negotiated;
GST_LOG_OBJECT (enc, "buffer with ts: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
discont = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT);
/* now really feed the data to encoder */
data = GST_BUFFER_DATA (buf);
ret = gst_jasper_enc_get_data (enc, data, &outbuf);
if (outbuf) {
gst_buffer_copy_metadata (outbuf, buf, GST_BUFFER_COPY_TIMESTAMPS);
if (discont)
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
}
if (ret == GST_FLOW_OK && outbuf)
ret = gst_pad_push (enc->srcpad, outbuf);
done:
gst_buffer_unref (buf);
gst_object_unref (enc);
return ret;
/* ERRORS */
not_negotiated:
{
GST_ELEMENT_ERROR (enc, CORE, NEGOTIATION, (NULL),
("format wasn't negotiated before chain function"));
ret = GST_FLOW_NOT_NEGOTIATED;
goto done;
}
}
static GstStateChangeReturn
gst_jasper_enc_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstJasperEnc *enc = GST_JASPER_ENC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (jas_init ())
goto fail_init;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_jasper_enc_reset (enc);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
jas_cleanup ();
break;
default:
break;
}
return ret;
/* ERRORS */
fail_init:
{
GST_ELEMENT_ERROR (enc, LIBRARY, INIT, (NULL), (NULL));
return GST_STATE_CHANGE_FAILURE;
}
}
static gboolean
gst_jasper_enc_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstJasperEnc *enc;
GstVideoFormat format;
gint width, height;
gint fps_num, fps_den;
gint par_num, par_den;
gint i;
enc = GST_JASPER_ENC (GST_PAD_PARENT (pad));
/* get info from caps */
if (!gst_video_format_parse_caps (caps, &format, &width, &height))
goto refuse_caps;
/* optional; pass along if present */
fps_num = fps_den = -1;
par_num = par_den = -1;
gst_video_parse_caps_framerate (caps, &fps_num, &fps_den);
gst_video_parse_caps_pixel_aspect_ratio (caps, &par_num, &par_den);
if (width == enc->width && height == enc->height && enc->format == format
&& fps_num == enc->fps_num && fps_den == enc->fps_den
&& par_num == enc->par_num && par_den == enc->par_den)
return TRUE;
/* store input description */
enc->format = format;
enc->width = width;
enc->height = height;
enc->fps_num = fps_num;
enc->fps_den = fps_den;
enc->par_num = par_num;
enc->par_den = par_den;
/* prepare a cached image description */
enc->channels = 3 + (gst_video_format_has_alpha (format) ? 1 : 0);
for (i = 0; i < enc->channels; ++i) {
enc->cwidth[i] = gst_video_format_get_component_width (format, i, width);
enc->cheight[i] = gst_video_format_get_component_height (format, i, height);
enc->offset[i] = gst_video_format_get_component_offset (format, i, width,
height);
enc->stride[i] = gst_video_format_get_row_stride (format, i, width);
enc->inc[i] = gst_video_format_get_pixel_stride (format, i);
}
if (!gst_jasper_enc_set_src_caps (enc))
goto setcaps_failed;
if (!gst_jasper_enc_init_encoder (enc))
goto setup_failed;
return TRUE;
/* ERRORS */
setup_failed:
{
GST_ELEMENT_ERROR (enc, LIBRARY, SETTINGS, (NULL), (NULL));
return FALSE;
}
setcaps_failed:
{
GST_WARNING_OBJECT (enc, "Setting src caps failed");
GST_ELEMENT_ERROR (enc, LIBRARY, SETTINGS, (NULL), (NULL));
return FALSE;
}
refuse_caps:
{
GST_WARNING_OBJECT (enc, "refused caps %" GST_PTR_FORMAT, caps);
gst_object_unref (enc);
return FALSE;
}
}
