#include "gstspanplc.h"
-GST_BOILERPLATE (GstSpanPlc, gst_span_plc, GstElement, GST_TYPE_ELEMENT);
+#include <gst/audio/audio.h>
+
+G_DEFINE_TYPE (GstSpanPlc, gst_span_plc, GST_TYPE_ELEMENT);
GST_DEBUG_CATEGORY_STATIC (gst_span_plc_debug);
#define GST_CAT_DEFAULT gst_span_plc_debug
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("audio/x-raw-int, "
- "endianness = (int) BYTE_ORDER, signed = (bool) TRUE, "
- "width = (int) 16, depth = (int) 16, "
- "rate = (int) [ 1, MAX ], channels = (int) 1")
+ GST_STATIC_CAPS ("audio/x-raw, format=\"" GST_AUDIO_NE (S16) "\", "
+ "rate = " GST_AUDIO_RATE_RANGE " , channels = (int) 1")
);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("audio/x-raw-int, "
- "endianness = (int) BYTE_ORDER, signed = (bool) TRUE, "
- "width = (int) 16, depth = (int) 16, "
- "rate = (int) [ 1, MAX ], channels = (int) 1")
+ GST_STATIC_CAPS ("audio/x-raw, format=\"" GST_AUDIO_NE (S16) "\", "
+ "rate = " GST_AUDIO_RATE_RANGE " , channels = (int) 1")
);
static void gst_span_plc_dispose (GObject * object);
static GstStateChangeReturn gst_span_plc_change_state (GstElement * element,
GstStateChange transition);
-static gboolean gst_span_plc_setcaps_sink (GstPad * pad, GstCaps * caps);
-static GstFlowReturn gst_span_plc_chain (GstPad * pad, GstBuffer * buf);
-static gboolean gst_span_plc_event_sink (GstPad * pad, GstEvent * event);
+static void gst_span_plc_setcaps_sink (GstSpanPlc * plc, GstCaps * caps);
+static GstFlowReturn gst_span_plc_chain (GstPad * pad, GstObject * parent,
+ GstBuffer * buf);
+static gboolean gst_span_plc_event_sink (GstPad * pad, GstObject * parent,
+ GstEvent * event);
+/* initialize the plugin's class */
static void
-gst_span_plc_base_init (gpointer gclass)
+gst_span_plc_class_init (GstSpanPlcClass * klass)
{
- GstElementClass *element_class = (GstElementClass *) gclass;
+ GObjectClass *gobject_class = (GObjectClass *) klass;
+ GstElementClass *gstelement_class = (GstElementClass *) klass;
- gst_element_class_add_pad_template (element_class,
+ gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&src_factory));
- gst_element_class_add_pad_template (element_class,
+ gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&sink_factory));
- gst_element_class_set_details_simple (element_class, "SpanDSP PLC",
+ gst_element_class_set_details_simple (gstelement_class, "SpanDSP PLC",
"Filter/Effect/Audio",
"Adds packet loss concealment to audio",
"Youness Alaoui <youness.alaoui@collabora.co.uk>");
-}
-
-/* initialize the plugin's class */
-static void
-gst_span_plc_class_init (GstSpanPlcClass * klass)
-{
- GObjectClass *gobject_class = (GObjectClass *) klass;
- GstElementClass *gstelement_class = (GstElementClass *) klass;
gobject_class->dispose = gst_span_plc_dispose;
GST_DEBUG_CATEGORY_INIT (gst_span_plc_debug, "spanplc",
0, "spanDSP's packet loss concealment");
+
}
static void
-gst_span_plc_init (GstSpanPlc * plc, GstSpanPlcClass * gclass)
+gst_span_plc_init (GstSpanPlc * plc)
{
GST_DEBUG_OBJECT (plc, "init");
plc->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
plc->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
- gst_pad_set_setcaps_function (plc->sinkpad,
- GST_DEBUG_FUNCPTR (gst_span_plc_setcaps_sink));
-
- gst_pad_set_getcaps_function (plc->srcpad,
- GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
- gst_pad_set_getcaps_function (plc->sinkpad,
- GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
-
gst_pad_set_chain_function (plc->sinkpad,
GST_DEBUG_FUNCPTR (gst_span_plc_chain));
-
gst_pad_set_event_function (plc->sinkpad,
GST_DEBUG_FUNCPTR (gst_span_plc_event_sink));
gst_element_add_pad (GST_ELEMENT (plc), plc->sinkpad);
plc->plc_state = NULL;
- plc->last_stop = GST_CLOCK_TIME_NONE;
GST_DEBUG_OBJECT (plc, "init complete");
}
plc_free (plc->plc_state);
plc->plc_state = NULL;
- G_OBJECT_CLASS (parent_class)->dispose (object);
+ G_OBJECT_CLASS (gst_span_plc_parent_class)->dispose (object);
}
static void
plc->plc_state = plc_init (NULL);
else
plc->plc_state = NULL;
- plc->last_stop = GST_CLOCK_TIME_NONE;
}
static GstStateChangeReturn
break;
}
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+ ret = GST_ELEMENT_CLASS (gst_span_plc_parent_class)->change_state (element,
+ transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
return ret;
}
-static gboolean
-gst_span_plc_setcaps_sink (GstPad * pad, GstCaps * caps)
+static void
+gst_span_plc_setcaps_sink (GstSpanPlc * plc, GstCaps * caps)
{
- GstSpanPlc *plc = GST_SPAN_PLC (gst_pad_get_parent (pad));
GstStructure *s = NULL;
- gboolean ret = FALSE;
+ gint sample_rate;
- ret = gst_pad_set_caps (plc->srcpad, caps);
s = gst_caps_get_structure (caps, 0);
- if (s) {
- gst_structure_get_int (s, "rate", &plc->sample_rate);
- GST_DEBUG_OBJECT (plc, "setcaps: got sample rate : %d", plc->sample_rate);
+ if (!s)
+ return;
+
+ gst_structure_get_int (s, "rate", &sample_rate);
+ if (sample_rate != plc->sample_rate) {
+ GST_DEBUG_OBJECT (plc, "setcaps: got sample rate : %d", sample_rate);
+ plc->sample_rate = sample_rate;
+ gst_span_plc_flush (plc, TRUE);
}
-
- gst_span_plc_flush (plc, TRUE);
- gst_object_unref (plc);
-
- return ret;
}
static GstFlowReturn
-gst_span_plc_chain (GstPad * pad, GstBuffer * buffer)
+gst_span_plc_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
- GstSpanPlc *plc = GST_SPAN_PLC (GST_PAD_PARENT (pad));
- GstClockTime buffer_duration;
-
- if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
- plc->last_stop = GST_BUFFER_TIMESTAMP (buffer);
- else
- GST_WARNING_OBJECT (plc, "Buffer has no timestamp!");
-
- if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
- buffer_duration = GST_BUFFER_DURATION (buffer);
- } else {
- GST_WARNING_OBJECT (plc, "Buffer has no duration!");
- buffer_duration = (GST_BUFFER_SIZE (buffer) /
- (plc->sample_rate * sizeof (guint16))) * GST_SECOND;
- GST_DEBUG_OBJECT (plc, "Buffer duration : %" GST_TIME_FORMAT,
- GST_TIME_ARGS (buffer_duration));
- }
-
- plc->last_stop += buffer_duration;
+ GstSpanPlc *plc = GST_SPAN_PLC (parent);
+ GstMapInfo map;
if (plc->plc_state->missing_samples != 0)
buffer = gst_buffer_make_writable (buffer);
- plc_rx (plc->plc_state, (int16_t *) GST_BUFFER_DATA (buffer),
- GST_BUFFER_SIZE (buffer) / 2);
+ gst_buffer_map (buffer, &map, GST_MAP_READWRITE);
+ plc_rx (plc->plc_state, (int16_t *) map.data, map.size / 2);
+ gst_buffer_unmap (buffer, &map);
return gst_pad_push (plc->srcpad, buffer);
}
static void
-gst_span_plc_send_fillin (GstSpanPlc * plc, GstClockTime duration)
+gst_span_plc_send_fillin (GstSpanPlc * plc, GstClockTime timestamp,
+ GstClockTime duration)
{
guint buf_size;
GstBuffer *buffer = NULL;
+ GstMapInfo map;
buf_size = ((float) duration / GST_SECOND) * plc->sample_rate;
buf_size *= sizeof (guint16);
buffer = gst_buffer_new_and_alloc (buf_size);
GST_DEBUG_OBJECT (plc, "Missing packet of %" GST_TIME_FORMAT
" == %d bytes", GST_TIME_ARGS (duration), buf_size);
- plc_fillin (plc->plc_state, (int16_t *) GST_BUFFER_DATA (buffer),
- GST_BUFFER_SIZE (buffer) / 2);
- GST_BUFFER_TIMESTAMP (buffer) = plc->last_stop;
+ gst_buffer_map (buffer, &map, GST_MAP_READWRITE);
+ plc_fillin (plc->plc_state, (int16_t *) map.data, map.size / 2);
+ gst_buffer_unmap (buffer, &map);
+ GST_BUFFER_PTS (buffer) = timestamp;
GST_BUFFER_DURATION (buffer) = duration;
- gst_buffer_set_caps (buffer, GST_PAD_CAPS (plc->srcpad));
gst_pad_push (plc->srcpad, buffer);
}
static gboolean
-gst_span_plc_event_sink (GstPad * pad, GstEvent * event)
+gst_span_plc_event_sink (GstPad * pad, GstObject * parent, GstEvent * event)
{
+ GstSpanPlc *plc = GST_SPAN_PLC (parent);
gboolean ret = FALSE;
- GstSpanPlc *plc = GST_SPAN_PLC (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (plc, "received event %s", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_NEWSEGMENT:
+ case GST_EVENT_CAPS:
+ {
+ GstCaps *caps;
+ gst_event_parse_caps (event, &caps);
+ gst_span_plc_setcaps_sink (plc, caps);
+ break;
+ }
+ case GST_EVENT_GAP:
{
- GstFormat format;
- gdouble rate;
- gint64 start, stop, time;
- gboolean update;
-
- gst_event_parse_new_segment (event, &update, &rate, &format, &start,
- &stop, &time);
-
- if (format != GST_FORMAT_TIME)
- goto newseg_wrong_format;
-
- if (update) {
- /* time progressed without data, see if we can fill the gap with
- * some concealment data */
- if (plc->last_stop < start)
- gst_span_plc_send_fillin (plc, start - plc->last_stop);
- }
- plc->last_stop = start;
+ GstClockTime timestamp;
+ GstClockTime duration;
+
+ gst_event_parse_gap (event, ×tamp, &duration);
+ gst_span_plc_send_fillin (plc, timestamp, duration);
break;
}
- case GST_EVENT_FLUSH_START:
+ case GST_EVENT_FLUSH_STOP:
gst_span_plc_flush (plc, TRUE);
break;
default:
gst_object_unref (plc);
return ret;
-newseg_wrong_format:
- {
- GST_DEBUG_OBJECT (plc, "received non TIME newsegment");
- gst_object_unref (plc);
- return FALSE;
- }
}