#include "gstrtph265pay.h"
#include "gstrtputils.h"
+#define AP_TYPE_ID 48
#define FU_TYPE_ID 49
GST_DEBUG_CATEGORY_STATIC (rtph265pay_debug);
#define GST_CAT_DEFAULT (rtph265pay_debug)
+#define GST_TYPE_RTP_H265_AGGREGATE_MODE \
+ (gst_rtp_h265_aggregate_mode_get_type ())
+
+
+static GType
+gst_rtp_h265_aggregate_mode_get_type (void)
+{
+ static GType type = 0;
+ static const GEnumValue values[] = {
+ {GST_RTP_H265_AGGREGATE_NONE, "Do not aggregate NAL units", "none"},
+ {GST_RTP_H265_AGGREGATE_ZERO_LATENCY, "Aggregate all that arrive together",
+ "zero-latency"},
+ {GST_RTP_H265_AGGREGATE_MAX,
+ "Aggregate all NAL units with the same timestamp (adds one frame of"
+ " latency)", "max"},
+ {0, NULL, NULL},
+ };
+
+ if (!type) {
+ type = g_enum_register_static ("GstRtpH265AggregateMode", values);
+ }
+ return type;
+}
+
+
+
/* references:
*
* Internet Draft RTP Payload Format for High Efficiency Video Coding
);
#define DEFAULT_CONFIG_INTERVAL 0
-
+#define DEFAULT_AGGREGATE_MODE GST_RTP_H265_AGGREGATE_ZERO_LATENCY
enum
{
PROP_0,
PROP_CONFIG_INTERVAL,
+ PROP_AGGREGATE_MODE,
};
static void gst_rtp_h265_pay_finalize (GObject * object);
GstEvent * event);
static GstStateChangeReturn gst_rtp_h265_pay_change_state (GstElement *
element, GstStateChange transition);
-static GstFlowReturn gst_rtp_h265_pay_payload_nal_single (GstRTPBasePayload *
- basepayload, GstBuffer * paybuf, GstClockTime dts, GstClockTime pts,
- gboolean marker);
-static GstFlowReturn gst_rtp_h265_pay_payload_nal_fragment (GstRTPBasePayload *
- basepayload, GstBuffer * paybuf, GstClockTime dts, GstClockTime pts,
- gboolean marker, guint mtu, guint8 nal_type, const guint8 * nal_header,
- int size);
+static gboolean gst_rtp_h265_pay_src_query (GstPad * pad, GstObject * parent,
+ GstQuery * query);
+
+static void gst_rtp_h265_pay_reset_bundle (GstRtpH265Pay * rtph265pay);
#define gst_rtp_h265_pay_parent_class parent_class
G_DEFINE_TYPE (GstRtpH265Pay, gst_rtp_h265_pay, GST_TYPE_RTP_BASE_PAYLOAD);
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
);
+ g_object_class_install_property (G_OBJECT_CLASS (klass),
+ PROP_AGGREGATE_MODE,
+ g_param_spec_enum ("aggregate-mode",
+ "Attempt to use aggregate packets",
+ "Bundle suitable SPS/PPS NAL units into aggregate packets.",
+ GST_TYPE_RTP_H265_AGGREGATE_MODE,
+ DEFAULT_AGGREGATE_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
+ );
+
gobject_class->finalize = gst_rtp_h265_pay_finalize;
gst_element_class_add_static_pad_template (gstelement_class,
(GDestroyNotify) gst_buffer_unref);
rtph265pay->last_vps_sps_pps = -1;
rtph265pay->vps_sps_pps_interval = DEFAULT_CONFIG_INTERVAL;
+ rtph265pay->aggregate_mode = DEFAULT_AGGREGATE_MODE;
rtph265pay->adapter = gst_adapter_new ();
+
+ gst_pad_set_query_function (GST_RTP_BASE_PAYLOAD_SRCPAD (rtph265pay),
+ gst_rtp_h265_pay_src_query);
}
static void
g_object_unref (rtph265pay->adapter);
+ gst_rtp_h265_pay_reset_bundle (rtph265pay);
+
G_OBJECT_CLASS (parent_class)->finalize (object);
}
+static gboolean
+gst_rtp_h265_pay_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
+{
+ GstRtpH265Pay *rtph265pay = GST_RTP_H265_PAY (parent);
+
+ if (GST_QUERY_TYPE (query) == GST_QUERY_LATENCY) {
+ gboolean retval;
+ gboolean live;
+ GstClockTime min_latency, max_latency;
+
+ retval = gst_pad_query_default (pad, parent, query);
+ if (!retval)
+ return retval;
+
+ if (rtph265pay->stream_format == GST_H265_STREAM_FORMAT_UNKNOWN ||
+ rtph265pay->alignment == GST_H265_ALIGNMENT_UNKNOWN)
+ return FALSE;
+
+ gst_query_parse_latency (query, &live, &min_latency, &max_latency);
+
+ if (rtph265pay->aggregate_mode == GST_RTP_H265_AGGREGATE_MAX &&
+ rtph265pay->alignment != GST_H265_ALIGNMENT_AU && rtph265pay->fps_num) {
+ GstClockTime one_frame = gst_util_uint64_scale_int (GST_SECOND,
+ rtph265pay->fps_denum, rtph265pay->fps_num);
+
+ min_latency += one_frame;
+ max_latency += one_frame;
+ gst_query_set_latency (query, live, min_latency, max_latency);
+ }
+ return TRUE;
+ }
+
+ return gst_pad_query_default (pad, parent, query);
+}
+
+
static const gchar all_levels[][4] = {
"1",
"2",
rtph265pay->stream_format = GST_H265_STREAM_FORMAT_BYTESTREAM;
}
+ if (!gst_structure_get_fraction (str, "framerate", &rtph265pay->fps_num,
+ &rtph265pay->fps_denum))
+ rtph265pay->fps_num = rtph265pay->fps_denum = 0;
+
+
/* packetized HEVC video has a codec_data */
if ((value = gst_structure_get_value (str, "codec_data"))) {
guint num_vps, num_sps, num_pps;
return updated;
}
-static GstFlowReturn
-gst_rtp_h265_pay_payload_nal (GstRTPBasePayload * basepayload,
- GPtrArray * paybufs, GstClockTime dts, GstClockTime pts);
+static GstFlowReturn gst_rtp_h265_pay_payload_nal (GstRTPBasePayload *
+ basepayload, GPtrArray * paybufs, GstClockTime dts, GstClockTime pts);
+static GstFlowReturn gst_rtp_h265_pay_payload_nal_single (GstRTPBasePayload *
+ basepayload, GstBuffer * paybuf, GstClockTime dts, GstClockTime pts,
+ gboolean marker);
+static GstFlowReturn gst_rtp_h265_pay_payload_nal_fragment (GstRTPBasePayload *
+ basepayload, GstBuffer * paybuf, GstClockTime dts, GstClockTime pts,
+ gboolean marker, guint mtu, guint8 nal_type, const guint8 * nal_header,
+ int size);
+static GstFlowReturn gst_rtp_h265_pay_payload_nal_bundle (GstRTPBasePayload *
+ basepayload, GstBuffer * paybuf, GstClockTime dts, GstClockTime pts,
+ gboolean marker, guint8 nal_type, const guint8 * nal_header, int size);
static GstFlowReturn
gst_rtp_h265_pay_send_vps_sps_pps (GstRTPBasePayload * basepayload,
return ret;
}
+static void
+gst_rtp_h265_pay_reset_bundle (GstRtpH265Pay * rtph265pay)
+{
+ g_clear_pointer (&rtph265pay->bundle, gst_buffer_list_unref);
+ rtph265pay->bundle_size = 0;
+ rtph265pay->bundle_contains_vcl = FALSE;
+}
+
static GstFlowReturn
gst_rtp_h265_pay_payload_nal (GstRTPBasePayload * basepayload,
GPtrArray * paybufs, GstClockTime dts, GstClockTime pts)
}
}
- ret = gst_rtp_h265_pay_payload_nal_fragment (basepayload, paybuf, dts,
- pts, marker, mtu, nal_type, nal_header, size);
+ if (rtph265pay->aggregate_mode != GST_RTP_H265_AGGREGATE_NONE)
+ ret = gst_rtp_h265_pay_payload_nal_bundle (basepayload, paybuf, dts, pts,
+ marker, nal_type, nal_header, size);
+ else
+ ret = gst_rtp_h265_pay_payload_nal_fragment (basepayload, paybuf, dts,
+ pts, marker, mtu, nal_type, nal_header, size);
}
g_ptr_array_free (paybufs, TRUE);
return ret;
}
+static GstFlowReturn
+gst_rtp_h265_pay_send_bundle (GstRtpH265Pay * rtph265pay, gboolean marker)
+{
+ GstRTPBasePayload *basepayload;
+ GstBufferList *bundle;
+ guint length, bundle_size;
+ GstBuffer *first, *outbuf;
+ GstClockTime dts, pts;
+
+ bundle_size = rtph265pay->bundle_size;
+
+ if (bundle_size == 0) {
+ GST_DEBUG_OBJECT (rtph265pay, "no bundle, nothing to send");
+ return GST_FLOW_OK;
+ }
+
+ basepayload = GST_RTP_BASE_PAYLOAD (rtph265pay);
+ bundle = rtph265pay->bundle;
+ length = gst_buffer_list_length (bundle);
+
+ first = gst_buffer_list_get (bundle, 0);
+ dts = GST_BUFFER_DTS (first);
+ pts = GST_BUFFER_PTS (first);
+
+ if (length == 1) {
+ /* Push unaggregated NALU */
+ outbuf = gst_buffer_ref (first);
+
+ GST_DEBUG_OBJECT (rtph265pay,
+ "sending NAL Unit unaggregated: datasize=%u", bundle_size - 2);
+ } else {
+ guint8 ap_header[2];
+ guint i;
+ guint8 layer_id = 0xFF;
+ guint8 temporal_id = 0xFF;
+
+ outbuf = gst_buffer_new_allocate (NULL, sizeof ap_header, NULL);
+
+ for (i = 0; i < length; i++) {
+ GstBuffer *buf = gst_buffer_list_get (bundle, i);
+ guint8 nal_header[2];
+ GstMemory *size_header;
+ GstMapInfo map;
+ guint8 nal_layer_id;
+ guint8 nal_temporal_id;
+
+ gst_buffer_extract (buf, 0, &nal_header, sizeof nal_header);
+
+ /* Propagate F bit */
+ if ((nal_header[0] & 0x80))
+ ap_header[0] |= 0x80;
+
+ /* Select lowest layer_id & temporal_id */
+ nal_layer_id = ((nal_header[0] & 0x01) << 5) |
+ ((nal_header[1] >> 3) & 0x1F);
+ nal_temporal_id = nal_header[1] & 0x7;
+ layer_id = MIN (layer_id, nal_layer_id);
+ temporal_id = MIN (temporal_id, nal_temporal_id);
+
+ /* append NALU size */
+ size_header = gst_allocator_alloc (NULL, 2, NULL);
+ gst_memory_map (size_header, &map, GST_MAP_WRITE);
+ GST_WRITE_UINT16_BE (map.data, gst_buffer_get_size (buf));
+ gst_memory_unmap (size_header, &map);
+ gst_buffer_append_memory (outbuf, size_header);
+
+ /* append NALU data */
+ outbuf = gst_buffer_append (outbuf, gst_buffer_ref (buf));
+ }
+
+ ap_header[0] = (AP_TYPE_ID << 1) | (layer_id & 0x20);
+ ap_header[1] = ((layer_id & 0x1F) << 3) | (temporal_id | 0x07);
+
+ gst_buffer_fill (outbuf, 0, &ap_header, sizeof ap_header);
+
+ GST_DEBUG_OBJECT (rtph265pay,
+ "sending AP bundle: n=%u header=%02x%02x datasize=%u",
+ length, ap_header[0], ap_header[1], bundle_size);
+ }
+
+ gst_rtp_h265_pay_reset_bundle (rtph265pay);
+ return gst_rtp_h265_pay_payload_nal_single (basepayload, outbuf, dts, pts,
+ marker);
+}
+
+static gboolean
+gst_rtp_h265_pay_payload_nal_bundle (GstRTPBasePayload * basepayload,
+ GstBuffer * paybuf, GstClockTime dts, GstClockTime pts,
+ gboolean marker, guint8 nal_type, const guint8 * nal_header, int size)
+{
+ GstRtpH265Pay *rtph265pay;
+ GstFlowReturn ret;
+ guint pay_size, bundle_size;
+ GstBufferList *bundle;
+ gboolean start_of_au;
+ guint mtu;
+
+ rtph265pay = GST_RTP_H265_PAY (basepayload);
+ mtu = GST_RTP_BASE_PAYLOAD_MTU (rtph265pay);
+ pay_size = 2 + gst_buffer_get_size (paybuf);
+ bundle = rtph265pay->bundle;
+ start_of_au = FALSE;
+
+ if (bundle) {
+ GstBuffer *first = gst_buffer_list_get (bundle, 0);
+
+ if (nal_type == GST_H265_NAL_AUD) {
+ GST_DEBUG_OBJECT (rtph265pay, "found access delimiter");
+ start_of_au = TRUE;
+ } else if (GST_BUFFER_IS_DISCONT (paybuf)) {
+ GST_DEBUG_OBJECT (rtph265pay, "found discont");
+ start_of_au = TRUE;
+ } else if (GST_BUFFER_PTS (first) != pts || GST_BUFFER_DTS (first) != dts) {
+ GST_DEBUG_OBJECT (rtph265pay, "found timestamp mismatch");
+ start_of_au = TRUE;
+ }
+ }
+
+ if (start_of_au) {
+ GST_DEBUG_OBJECT (rtph265pay, "sending bundle before start of AU");
+
+ ret = gst_rtp_h265_pay_send_bundle (rtph265pay, TRUE);
+ if (ret != GST_FLOW_OK)
+ goto out;
+
+ bundle = NULL;
+ }
+
+ bundle_size = 2 + pay_size;
+
+ if (gst_rtp_buffer_calc_packet_len (bundle_size, 0, 0) > mtu) {
+ GST_DEBUG_OBJECT (rtph265pay, "NAL Unit cannot fit in a bundle");
+
+ ret = gst_rtp_h265_pay_send_bundle (rtph265pay, FALSE);
+ if (ret != GST_FLOW_OK)
+ goto out;
+
+ return gst_rtp_h265_pay_payload_nal_fragment (basepayload, paybuf, dts, pts,
+ marker, mtu, nal_type, nal_header, size);
+ }
+
+ bundle_size = rtph265pay->bundle_size + pay_size;
+
+ if (gst_rtp_buffer_calc_packet_len (bundle_size, 0, 0) > mtu) {
+ GST_DEBUG_OBJECT (rtph265pay,
+ "bundle overflows, sending: bundlesize=%u datasize=2+%u mtu=%u",
+ rtph265pay->bundle_size, pay_size - 2, mtu);
+
+ ret = gst_rtp_h265_pay_send_bundle (rtph265pay, FALSE);
+ if (ret != GST_FLOW_OK)
+ goto out;
+
+ bundle = NULL;
+ }
+
+ if (!bundle) {
+ GST_DEBUG_OBJECT (rtph265pay, "creating new AP aggregate");
+ bundle = rtph265pay->bundle = gst_buffer_list_new ();
+ bundle_size = rtph265pay->bundle_size = 2;
+ rtph265pay->bundle_contains_vcl = FALSE;
+ }
+
+ GST_DEBUG_OBJECT (rtph265pay,
+ "bundling NAL Unit: bundlesize=%u datasize=2+%u mtu=%u",
+ rtph265pay->bundle_size, pay_size - 2, mtu);
+
+ paybuf = gst_buffer_make_writable (paybuf);
+ GST_BUFFER_PTS (paybuf) = pts;
+ GST_BUFFER_DTS (paybuf) = dts;
+
+ gst_buffer_list_add (bundle, gst_buffer_ref (paybuf));
+ rtph265pay->bundle_size += pay_size;
+ ret = GST_FLOW_OK;
+
+ /* In H.265, all VCL NAL units are < 32 */
+ if (nal_type < 32)
+ rtph265pay->bundle_contains_vcl = TRUE;
+
+ if (marker) {
+ GST_DEBUG_OBJECT (rtph265pay, "sending bundle at marker");
+ ret = gst_rtp_h265_pay_send_bundle (rtph265pay, TRUE);
+ }
+
+out:
+ gst_buffer_unref (paybuf);
+ return ret;
+}
static GstFlowReturn
gst_rtp_h265_pay_handle_buffer (GstRTPBasePayload * basepayload,
GstBuffer *paybuf = NULL;
gsize skip;
gboolean marker = FALSE;
+ gboolean discont = FALSE;
gboolean draining = (buffer == NULL);
rtph265pay = GST_RTP_H265_PAY (basepayload);
GST_DEBUG_OBJECT (basepayload, "got %" G_GSIZE_FORMAT " bytes", size);
} else {
if (buffer) {
+ if (gst_adapter_available (rtph265pay->adapter) == 0)
+ discont = GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT);
marker = GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_MARKER);
gst_adapter_push (rtph265pay->adapter, buffer);
buffer = NULL;
ret = GST_FLOW_OK;
- /* now loop over all NAL units and put them in a packet
- * FIXME, we should really try to pack multiple NAL units into one RTP packet
- * if we can, especially for the config packets that won't cause decoder
- * latency. */
+ /* now loop over all NAL units and put them in a packet */
if (hevc) {
guint nal_length_size;
gsize offset = 0;
GST_BUFFER_FLAG_SET (paybuf, GST_BUFFER_FLAG_MARKER);
}
+ GST_BUFFER_FLAG_UNSET (paybuf, GST_BUFFER_FLAG_DISCONT);
+ if (discont) {
+ GST_BUFFER_FLAG_SET (paybuf, GST_BUFFER_FLAG_DISCONT);
+ discont = FALSE;
+ }
+
data += nal_len;
offset += nal_len;
size -= nal_len;
GST_BUFFER_FLAG_SET (paybuf, GST_BUFFER_FLAG_MARKER);
}
+ GST_BUFFER_FLAG_UNSET (paybuf, GST_BUFFER_FLAG_DISCONT);
+ if (discont) {
+ GST_BUFFER_FLAG_SET (paybuf, GST_BUFFER_FLAG_DISCONT);
+ discont = FALSE;
+ }
+
/* move to next NAL packet */
/* Skips the trailing zeros */
gst_adapter_flush (rtph265pay->adapter, nal_len - size);
g_array_set_size (nal_queue, 0);
}
+ if (ret == GST_FLOW_OK &&
+ rtph265pay->aggregate_mode == GST_RTP_H265_AGGREGATE_ZERO_LATENCY) {
+ GST_DEBUG_OBJECT (rtph265pay, "sending bundle at end incoming packet");
+ ret = gst_rtp_h265_pay_send_bundle (rtph265pay, FALSE);
+ }
+
done:
if (hevc) {
gst_buffer_unmap (buffer, &map);
gboolean res;
const GstStructure *s;
GstRtpH265Pay *rtph265pay = GST_RTP_H265_PAY (payload);
+ GstFlowReturn ret = GST_FLOW_OK;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
gst_adapter_clear (rtph265pay->adapter);
+ gst_rtp_h265_pay_reset_bundle (rtph265pay);
break;
case GST_EVENT_CUSTOM_DOWNSTREAM:
s = gst_event_get_structure (event);
* in byte-stream mode
*/
gst_rtp_h265_pay_handle_buffer (payload, NULL);
+ ret = gst_rtp_h265_pay_send_bundle (rtph265pay, TRUE);
+
break;
}
case GST_EVENT_STREAM_START:
break;
}
+ if (ret != GST_FLOW_OK)
+ return FALSE;
+
res = GST_RTP_BASE_PAYLOAD_CLASS (parent_class)->sink_event (payload, event);
return res;
case GST_STATE_CHANGE_READY_TO_PAUSED:
rtph265pay->send_vps_sps_pps = FALSE;
gst_adapter_clear (rtph265pay->adapter);
+ gst_rtp_h265_pay_reset_bundle (rtph265pay);
break;
default:
break;
case PROP_CONFIG_INTERVAL:
rtph265pay->vps_sps_pps_interval = g_value_get_int (value);
break;
+ case PROP_AGGREGATE_MODE:
+ rtph265pay->aggregate_mode = g_value_get_enum (value);
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
case PROP_CONFIG_INTERVAL:
g_value_set_int (value, rtph265pay->vps_sps_pps_interval);
break;
+ case PROP_AGGREGATE_MODE:
+ g_value_set_enum (value, rtph265pay->aggregate_mode);
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
projects / platform / upstream / gstreamer.git / commitdiff