static GstStateChangeReturn
audio_trim_change_state (GstElement *element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
AudioTrim *filter;
filter = AUDIO_TRIM (element);
switch(transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
filter->accumulator = 0.0;
filter->f0 = 0.99;
filter->trim_state = AUDIO_TRIM_NOT_STARTED;
filter->sound_duration = 0;
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:
release_buffers(filter);
break;
default:
break;
}
return ret;
}
static OMX_ERRORTYPE
httpr_prc_port_disable (const void * ap_prc, OMX_U32 a_pid)
{
httpr_prc_t * p_prc = (httpr_prc_t *) ap_prc;
p_prc->port_disabled_ = true;
release_buffers (p_prc);
return OMX_ErrorNone;
}
static OMX_ERRORTYPE
httpr_prc_stop_and_return (void * ap_prc)
{
httpr_prc_t * p_prc = ap_prc;
OMX_ERRORTYPE rc = OMX_ErrorNone;
assert (p_prc);
rc = httpr_srv_stop (p_prc->p_server_);
release_buffers (p_prc);
return rc;
}
void tracker_bitmap_color::initialize_buffers( int w, int h )
{
//Do nothing, If the previous image and input image are same as the dimensions,
if(m_img[FILTER_NONE] && m_img[FILTER_NONE]->width == w && m_img[FILTER_NONE]->height == h) return;
else release_buffers();
//for a camera input, assume the image is composed of 8bit RGB pixels.
//Also for the input image, the just the headers are sufficient.
m_img[FILTER_NONE] = cvCreateImageHeader(cvSize(w,h),8,3);
m_img[FILTER_HSV] = cvCreateImage(cvSize(w,h),8,3);
m_img[FILTER_HSV_THRESHOLD] = cvCreateImage(cvSize(w,h),8,1);
m_img[FILTER_HSV_THRESHOLD_RGB] = cvCreateImage(cvSize(w,h),8,3);
}
static GstFlowReturn
send_buffers_before(AudioTrim *filter, gint64 before)
{
GstFlowReturn ret = GST_FLOW_OK;
GList *b = filter->buffers;
while(b) {
GstBuffer *buf = b->data;
b->data = NULL;
if ((gint64)GST_BUFFER_OFFSET(buf) >= before) {
gst_buffer_unref(buf);
} else {
if ((gint64)GST_BUFFER_OFFSET_END(buf) > before) {
GstBuffer *head = buffer_head(filter, buf, before);
gst_buffer_unref(buf);
buf = head;
}
ret = gst_pad_push(filter->srcpad, buf);
if (ret != GST_FLOW_OK) break;
}
b = g_list_next(b);
}
release_buffers(filter);
return ret;
}
static GstFlowReturn
send_buffers_after(AudioTrim *filter, gint64 after)
{
GstFlowReturn ret = GST_FLOW_OK;
GList *b = filter->buffers;
while(b) {
GstBuffer *buf = b->data;
b->data = NULL;
if ((gint64)GST_BUFFER_OFFSET_END(buf) <= after) {
gst_buffer_unref(buf);
} else {
if ((gint64)GST_BUFFER_OFFSET(buf) < after) {
GstBuffer *tail = buffer_tail(filter, buf, after);
gst_buffer_unref(buf);
buf = tail;
}
ret = gst_pad_push(filter->srcpad, buf);
if (ret != GST_FLOW_OK) break;
}
b = g_list_next(b);
}
release_buffers(filter);
return ret;
}
/* GObject vmethod implementations */
static void
audio_trim_finalize (GObject *obj)
{
AudioTrim *filter = AUDIO_TRIM (obj);
release_buffers(filter);
}
void tracker_bitmap_color::on_delete()
{
release_buffers();
}
