#endif
#include <string.h>
+
+#include "gstrdtbuffer.h"
#include "rdtdepay.h"
GST_DEBUG_CATEGORY_STATIC (rdtdepay_debug);
GST_BOILERPLATE (GstRDTDepay, gst_rdt_depay, GstElement, GST_TYPE_ELEMENT);
-static gboolean gst_rdt_depay_setcaps (GstPad * pad, GstCaps * caps);
-static GstFlowReturn gst_rdt_depay_chain (GstPad * pad, GstBuffer * buf);
+static void gst_rdt_depay_finalize (GObject * object);
static void gst_rdt_depay_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_rdt_depay_change_state (GstElement *
element, GstStateChange transition);
+static gboolean gst_rdt_depay_setcaps (GstPad * pad, GstCaps * caps);
+static GstFlowReturn gst_rdt_depay_chain (GstPad * pad, GstBuffer * buf);
+
static void
gst_rdt_depay_base_init (gpointer klass)
{
gobject_class->set_property = gst_rdt_depay_set_property;
gobject_class->get_property = gst_rdt_depay_get_property;
+ gobject_class->finalize = gst_rdt_depay_finalize;
+
gstelement_class->change_state = gst_rdt_depay_change_state;
}
gst_element_add_pad (GST_ELEMENT_CAST (rdtdepay), rdtdepay->srcpad);
}
+static void
+gst_rdt_depay_finalize (GObject * object)
+{
+ GstRDTDepay *rdtdepay;
+
+ rdtdepay = GST_RDT_DEPAY (object);
+
+ if (rdtdepay->header)
+ gst_buffer_unref (rdtdepay->header);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
static gboolean
gst_rdt_depay_setcaps (GstPad * pad, GstCaps * caps)
{
if (!header)
goto no_header;
- /* need to ref because we are going to give away a ref in push */
- gst_buffer_ref (header);
-
/* caps seem good, configure element */
rdtdepay->clock_rate = clock_rate;
/* set caps on pad and on header */
srccaps = gst_caps_new_simple ("application/vnd.rn-realmedia", NULL);
gst_pad_set_caps (rdtdepay->srcpad, srccaps);
- gst_buffer_set_caps (header, srccaps);
gst_caps_unref (srccaps);
- /* push header data first */
- gst_pad_push (rdtdepay->srcpad, header);
+ if (rdtdepay->header)
+ gst_buffer_unref (rdtdepay->header);
+ rdtdepay->header = gst_buffer_ref (header);
return TRUE;
}
}
-#define ASSERT_SIZE(n) if (size < (n)) goto not_enough_data;
-
static GstFlowReturn
-gst_rdt_depay_chain (GstPad * pad, GstBuffer * buf)
+gst_rdt_depay_push (GstRDTDepay * rdtdepay, GstBuffer * buffer)
{
- GstRDTDepay *rdtdepay;
GstFlowReturn ret;
- GstBuffer *outbuf;
- guint8 *data, *outdata;
- guint size, channel = 0;
- gboolean length_included_flag;
- gboolean need_reliable_flag = 0;
- gboolean is_reliable;
- guint16 seq_no;
- gboolean back_to_back;
- gboolean slow_data;
- guint asm_rule;
- guint32 ts;
- guint16 total_reliable;
- guint16 packet_type, packet_length;
-
- rdtdepay = GST_RDT_DEPAY (GST_PAD_PARENT (pad));
-
- /* data is in RDT format. */
- data = GST_BUFFER_DATA (buf);
- size = GST_BUFFER_SIZE (buf);
-
- while (size > 0) {
- ASSERT_SIZE (1);
- length_included_flag = (data[0] & 0x80) >> 7;
- need_reliable_flag = (data[0] & 0x40) >> 6;
- is_reliable = (data[0] & 0x01) >> 0;
- channel = (data[0] & 0x3e) >> 1;
-
- GST_DEBUG_OBJECT (rdtdepay, "length_included_flag=%i "
- "need_reliable_flag=%i is_reliable=%i", length_included_flag,
- need_reliable_flag, is_reliable);
-
- /* we can stop skipping */
- if (!length_included_flag)
- break;
- ASSERT_SIZE (5);
- packet_type = GST_READ_UINT16_BE (data + 1);
- packet_length = GST_READ_UINT16_BE (data + 3);
+ gst_buffer_set_caps (buffer, GST_PAD_CAPS (rdtdepay->srcpad));
- GST_DEBUG_OBJECT (rdtdepay, "Skipping packet of type %02x and length=%d...",
- packet_type, packet_length);
-
- ASSERT_SIZE (packet_length);
- data += packet_length;
- size -= packet_length;
+ if (rdtdepay->discont) {
+ GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
+ rdtdepay->discont = FALSE;
}
+ ret = gst_pad_push (rdtdepay->srcpad, buffer);
- ASSERT_SIZE (3);
- seq_no = GST_READ_UINT16_BE (data + 1);
-
- ASSERT_SIZE (4);
- back_to_back = (data[3] >> 7) & 0x01;
- slow_data = (data[3] >> 6) & 0x01;
- asm_rule = ((data[3] << 2) & 0xf) >> 2;
-
- ASSERT_SIZE (8);
- ts = GST_READ_UINT32_BE (data + 4);
-
- if (need_reliable_flag) {
- ASSERT_SIZE (10);
- total_reliable = GST_READ_UINT16_BE (data + 8);
- data += 10;
- size -= 10;
- } else {
- data += 9;
- size -= 9;
- }
+ return ret;
+}
+
+static GstFlowReturn
+gst_rdt_depay_handle_data (GstRDTDepay * rdtdepay, GstClockTime outtime,
+ GstRDTPacket * packet)
+{
+ GstFlowReturn ret;
+ GstBuffer *outbuf;
+ guint8 *data, *outdata;
+ guint size;
+ guint16 stream_id;
+ guint32 timestamp;
- GST_DEBUG_OBJECT (rdtdepay, "Passing on packet %d: "
- "back_to_back=%i slow_data=%i asm_rule=%i timestamp=%u",
- seq_no, back_to_back, slow_data, asm_rule, ts);
+ /* get pointers to the packet data */
+ gst_rdt_packet_data_peek_data (packet, &data, &size);
outbuf = gst_buffer_new_and_alloc (12 + size);
outdata = GST_BUFFER_DATA (outbuf);
- GST_BUFFER_TIMESTAMP (outbuf) =
- gst_util_uint64_scale_int (ts, GST_SECOND, rdtdepay->clock_rate);
+ GST_BUFFER_TIMESTAMP (outbuf) = outtime;
+
+ GST_DEBUG_OBJECT (rdtdepay, "have size %u", size);
+
+ /* copy over some things */
+ stream_id = gst_rdt_packet_data_get_stream_id (packet);
+ timestamp = gst_rdt_packet_data_get_timestamp (packet);
GST_WRITE_UINT16_BE (outdata + 0, 0); /* version */
GST_WRITE_UINT16_BE (outdata + 2, size + 12); /* length */
- GST_WRITE_UINT16_BE (outdata + 4, channel); /* stream */
- GST_WRITE_UINT32_BE (outdata + 6, ts); /* timestamp */
+ GST_WRITE_UINT16_BE (outdata + 4, stream_id); /* stream */
+ GST_WRITE_UINT32_BE (outdata + 6, timestamp); /* timestamp */
GST_WRITE_UINT16_BE (outdata + 10, 0); /* flags */
memcpy (outdata + 12, data, size);
- gst_buffer_unref (buf);
- gst_buffer_set_caps (outbuf, GST_PAD_CAPS (rdtdepay->srcpad));
- ret = gst_pad_push (rdtdepay->srcpad, outbuf);
+ GST_DEBUG_OBJECT (rdtdepay, "Passing on packet "
+ "stream_id=%u timestamp=%u, outtime %" GST_TIME_FORMAT, stream_id,
+ timestamp, GST_TIME_ARGS (outtime));
+
+ ret = gst_rdt_depay_push (rdtdepay, outbuf);
return ret;
+}
- /* ERRORS */
-not_enough_data:
- {
- GST_ELEMENT_WARNING (rdtdepay, STREAM, DECODE, (NULL),
- ("Not enough data."));
- return GST_FLOW_OK;
+static GstFlowReturn
+gst_rdt_depay_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstRDTDepay *rdtdepay;
+ GstFlowReturn ret;
+ GstClockTime timestamp;
+ gboolean more;
+ GstRDTPacket packet;
+
+ rdtdepay = GST_RDT_DEPAY (GST_PAD_PARENT (pad));
+
+ if (GST_BUFFER_IS_DISCONT (buf)) {
+ GST_LOG_OBJECT (rdtdepay, "received discont");
+ rdtdepay->discont = TRUE;
+ }
+
+ if (rdtdepay->header) {
+ GstBuffer *out;
+
+ out = rdtdepay->header;
+ rdtdepay->header = NULL;
+
+ /* push header data first */
+ ret = gst_rdt_depay_push (rdtdepay, out);
+ }
+
+ /* save timestamp */
+ timestamp = GST_BUFFER_TIMESTAMP (buf);
+
+ ret = GST_FLOW_OK;
+
+ GST_LOG_OBJECT (rdtdepay, "received buffer timestamp %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (timestamp));
+
+ /* data is in RDT format. */
+ more = gst_rdt_buffer_get_first_packet (buf, &packet);
+ while (more) {
+ GstRDTType type;
+
+ type = gst_rdt_packet_get_type (&packet);
+ GST_DEBUG_OBJECT (rdtdepay, "Have packet of type %04x", type);
+
+ if (GST_RDT_IS_DATA_TYPE (type)) {
+ GST_DEBUG_OBJECT (rdtdepay, "We have a data packet");
+ ret = gst_rdt_depay_handle_data (rdtdepay, timestamp, &packet);
+ } else {
+ switch (type) {
+ default:
+ GST_DEBUG_OBJECT (rdtdepay, "Ignoring packet");
+ break;
+ }
+ }
+ if (ret != GST_FLOW_OK)
+ break;
+
+ more = gst_rdt_packet_move_to_next (&packet);
}
+
+ return ret;
}
static void
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ if (rdtdepay->header)
+ gst_buffer_unref (rdtdepay->header);
+ rdtdepay->header = NULL;
+ break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
projects / platform / upstream / gstreamer.git / commitdiff