#include "gstrtph263ppay.h"
+#define DEFAULT_FRAGMENTATION_MODE GST_FRAGMENTATION_MODE_NORMAL
+
+enum
+{
+ PROP_0,
+ PROP_FRAGMENTATION_MODE
+};
+
+#define GST_TYPE_FRAGMENTATION_MODE (gst_fragmentation_mode_get_type())
+static GType
+gst_fragmentation_mode_get_type (void)
+{
+ static GType fragmentation_mode_type = 0;
+ static const GFlagsValue fragmentation_mode[] = {
+ {GST_FRAGMENTATION_MODE_NORMAL, "Normal", "normal"},
+ {GST_FRAGMENTATION_MODE_SYNC, "Fragment at sync points", "sync"},
+ {0, NULL, NULL},
+ };
+
+ if (!fragmentation_mode_type) {
+ fragmentation_mode_type =
+ g_flags_register_static ("GstFragmentationMode", fragmentation_mode);
+ }
+ return fragmentation_mode_type;
+}
+
+
+GST_DEBUG_CATEGORY_STATIC (rtph263ppay_debug);
+#define GST_CAT_DEFAULT rtph263ppay_debug
+
/* elementfactory information */
static const GstElementDetails gst_rtp_h263ppay_details =
GST_ELEMENT_DETAILS ("RTP packet payloader",
static void gst_rtp_h263p_pay_init (GstRtpH263PPay * rtph263ppay);
static void gst_rtp_h263p_pay_finalize (GObject * object);
+static void gst_rtp_h263p_pay_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+
+static void gst_rtp_h263p_pay_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
static gboolean gst_rtp_h263p_pay_setcaps (GstBaseRTPPayload * payload,
GstCaps * caps);
static GstFlowReturn gst_rtp_h263p_pay_handle_buffer (GstBaseRTPPayload *
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gst_rtp_h263p_pay_finalize;
+ gobject_class->set_property = gst_rtp_h263p_pay_set_property;
+ gobject_class->get_property = gst_rtp_h263p_pay_get_property;
gstbasertppayload_class->set_caps = gst_rtp_h263p_pay_setcaps;
gstbasertppayload_class->handle_buffer = gst_rtp_h263p_pay_handle_buffer;
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass),
+ PROP_FRAGMENTATION_MODE, g_param_spec_enum ("fragmentation-mode",
+ "Fragmentation Mode",
+ "Packet Fragmentation Mode", GST_TYPE_FRAGMENTATION_MODE,
+ DEFAULT_FRAGMENTATION_MODE, G_PARAM_READWRITE));
+
+ GST_DEBUG_CATEGORY_INIT (rtph263ppay_debug, "rtph263ppay",
+ 0, "rtph263ppay (RFC 2429)");
+
}
static void
gst_rtp_h263p_pay_init (GstRtpH263PPay * rtph263ppay)
{
rtph263ppay->adapter = gst_adapter_new ();
+
+ rtph263ppay->fragmentation_mode = DEFAULT_FRAGMENTATION_MODE;
}
static void
return TRUE;
}
+static void
+gst_rtp_h263p_pay_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstRtpH263PPay *rtph263ppay;
+
+ rtph263ppay = GST_RTP_H263P_PAY (object);
+
+ switch (prop_id) {
+ case PROP_FRAGMENTATION_MODE:
+ rtph263ppay->fragmentation_mode = g_value_get_enum (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_rtp_h263p_pay_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstRtpH263PPay *rtph263ppay;
+
+ rtph263ppay = GST_RTP_H263P_PAY (object);
+
+ switch (prop_id) {
+ case PROP_FRAGMENTATION_MODE:
+ g_value_set_enum (value, rtph263ppay->fragmentation_mode);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
static GstFlowReturn
gst_rtp_h263p_pay_flush (GstRtpH263PPay * rtph263ppay)
return GST_FLOW_OK;
fragmented = FALSE;
-
/* This algorithm assumes the H263+ encoder sends complete frames in each
* buffer */
- /* This algorithm implements the Follow-on packets method for packetization.
- * This assumes low packet loss network. A more resilient method would be to
- * separate large frames at synchronisation points (Segments) (See RFC 2429
- * section 6). It would be interesting to have a property such as network
- * quality to select between both packetization methods */
+ /* With Fragmentation Mode at GST_FRAGMENTATION_MODE_NORMAL:
+ * This algorithm implements the Follow-on packets method for packetization.
+ * This assumes low packet loss network.
+ * With Fragmentation Mode at GST_FRAGMENTATION_MODE_SYNC:
+ * This algorithm separates large frames at synchronisation points (Segments)
+ * (See RFC 2429 section 6). It would be interesting to have a property such as network
+ * quality to select between both packetization methods */
/* TODO Add VRC supprt (See RFC 2429 section 4.2) */
+
while (avail > 0) {
guint towrite;
guint8 *payload;
guint8 *data;
guint payload_len;
gint header_len;
+ guint next_gop = 0;
+ gboolean found_gob = FALSE;
+
+ if (rtph263ppay->fragmentation_mode == GST_FRAGMENTATION_MODE_SYNC) {
+ /* start after 1st gop possible */
+ guint parsed_len = 3;
+ const guint8 *parse_data = NULL;
+
+ parse_data = gst_adapter_peek (rtph263ppay->adapter, avail);
+
+ /* Check if we have a gob or eos , eossbs */
+ if (avail >= 3 && *parse_data == 0 && *(parse_data + 1) == 0
+ && *(parse_data + 2) >= 0x80) {
+ GST_DEBUG_OBJECT (rtph263ppay, " Found GOB header");
+ found_gob = TRUE;
+ }
+ /* Find next and cut the packet accordingly */
+ while (parsed_len + 2 < avail) {
+ if (parse_data[parsed_len] == 0 && parse_data[parsed_len + 1] == 0
+ && parse_data[parsed_len + 2] >= 0x80) {
+ next_gop = parsed_len;
+ GST_DEBUG_OBJECT (rtph263ppay, " Next GOB Detected at : %d",
+ next_gop);
+ break;
+ }
+ parsed_len++;
+ }
+ }
/* for picture start frames (non-fragmented), we need to remove the first
* two 0x00 bytes and set P=1 */
- header_len = (fragmented ? 2 : 0);
+ header_len = (fragmented && !found_gob) ? 2 : 0;
towrite = MIN (avail, gst_rtp_buffer_calc_payload_len
(GST_BASE_RTP_PAYLOAD_MTU (rtph263ppay) - header_len, 0, 0));
+ if (next_gop > 0)
+ towrite = MIN (next_gop, towrite);
+
payload_len = header_len + towrite;
outbuf = gst_rtp_buffer_new_allocate (payload_len, 0, 0);
* | RR |P|V| PLEN |PEBIT|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
- payload[0] = fragmented ? 0x00 : 0x04;
+ /* if fragmented or gop header , write p bit =1 */
+ payload[0] = (fragmented && !found_gob) ? 0x00 : 0x04;
payload[1] = 0;
GST_BUFFER_TIMESTAMP (outbuf) = rtph263ppay->first_ts;
projects / platform / upstream / gst-plugins-good.git / commitdiff