2 * Copyright (C) <2006> Wim Taymans <wim.taymans@gmail.com>
3 * Copyright (C) <2014> Jurgen Slowack <jurgenslowack@gmail.com>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
28 #include <gst/base/gstbitreader.h>
29 #include <gst/rtp/gstrtpbuffer.h>
30 #include <gst/video/video.h>
31 #include "gstrtph265depay.h"
32 #include "gstrtputils.h"
34 GST_DEBUG_CATEGORY_STATIC (rtph265depay_debug);
35 #define GST_CAT_DEFAULT (rtph265depay_debug)
37 /* This is what we'll default to when downstream hasn't
38 * expressed a restriction or preference via caps */
39 #define DEFAULT_BYTE_STREAM TRUE
40 #define DEFAULT_ACCESS_UNIT FALSE
42 /* 3 zero bytes syncword */
43 static const guint8 sync_bytes[] = { 0, 0, 0, 1 };
45 static GstStaticPadTemplate gst_rtp_h265_depay_src_template =
46 GST_STATIC_PAD_TEMPLATE ("src",
50 /* FIXME - hvc1 and hev1 formats are not supported yet */
52 "stream-format = (string) hvc1, alignment = (string) au; "
54 "stream-format = (string) hev1, alignment = (string) au; " */
56 "stream-format = (string) byte-stream, alignment = (string) { nal, au }")
59 static GstStaticPadTemplate gst_rtp_h265_depay_sink_template =
60 GST_STATIC_PAD_TEMPLATE ("sink",
63 GST_STATIC_CAPS ("application/x-rtp, "
64 "media = (string) \"video\", "
65 "clock-rate = (int) 90000, " "encoding-name = (string) \"H265\"")
66 /** optional parameters **/
67 /* "profile-space = (int) [ 0, 3 ], " */
68 /* "profile-id = (int) [ 0, 31 ], " */
69 /* "tier-flag = (int) [ 0, 1 ], " */
70 /* "level-id = (int) [ 0, 255 ], " */
71 /* "interop-constraints = (string) ANY, " */
72 /* "profile-compatibility-indicator = (string) ANY, " */
73 /* "sprop-sub-layer-id = (int) [ 0, 6 ], " */
74 /* "recv-sub-layer-id = (int) [ 0, 6 ], " */
75 /* "max-recv-level-id = (int) [ 0, 255 ], " */
76 /* "tx-mode = (string) {MST , SST}, " */
77 /* "sprop-vps = (string) ANY, " */
78 /* "sprop-sps = (string) ANY, " */
79 /* "sprop-pps = (string) ANY, " */
80 /* "sprop-sei = (string) ANY, " */
81 /* "max-lsr = (int) ANY, " *//* MUST be in the range of MaxLumaSR to 16 * MaxLumaSR, inclusive */
82 /* "max-lps = (int) ANY, " *//* MUST be in the range of MaxLumaPS to 16 * MaxLumaPS, inclusive */
83 /* "max-cpb = (int) ANY, " *//* MUST be in the range of MaxCPB to 16 * MaxCPB, inclusive */
84 /* "max-dpb = (int) [1, 16], " */
85 /* "max-br = (int) ANY, " *//* MUST be in the range of MaxBR to 16 * MaxBR, inclusive, for the highest level */
86 /* "max-tr = (int) ANY, " *//* MUST be in the range of MaxTileRows to 16 * MaxTileRows, inclusive, for the highest level */
87 /* "max-tc = (int) ANY, " *//* MUST be in the range of MaxTileCols to 16 * MaxTileCols, inclusive, for the highest level */
88 /* "max-fps = (int) ANY, " */
89 /* "sprop-max-don-diff = (int) [0, 32767], " */
90 /* "sprop-depack-buf-nalus = (int) [0, 32767], " */
91 /* "sprop-depack-buf-nalus = (int) [0, 4294967295], " */
92 /* "depack-buf-cap = (int) [1, 4294967295], " */
93 /* "sprop-segmentation-id = (int) [0, 3], " */
94 /* "sprop-spatial-segmentation-idc = (string) ANY, " */
95 /* "dec-parallel-cap = (string) ANY, " */
98 #define gst_rtp_h265_depay_parent_class parent_class
99 G_DEFINE_TYPE (GstRtpH265Depay, gst_rtp_h265_depay,
100 GST_TYPE_RTP_BASE_DEPAYLOAD);
102 static void gst_rtp_h265_depay_finalize (GObject * object);
104 static GstStateChangeReturn gst_rtp_h265_depay_change_state (GstElement *
105 element, GstStateChange transition);
107 static GstBuffer *gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload,
109 static gboolean gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * filter,
111 static gboolean gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay,
115 gst_rtp_h265_depay_class_init (GstRtpH265DepayClass * klass)
117 GObjectClass *gobject_class;
118 GstElementClass *gstelement_class;
119 GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
121 gobject_class = (GObjectClass *) klass;
122 gstelement_class = (GstElementClass *) klass;
123 gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
125 gobject_class->finalize = gst_rtp_h265_depay_finalize;
127 gst_element_class_add_pad_template (gstelement_class,
128 gst_static_pad_template_get (&gst_rtp_h265_depay_src_template));
129 gst_element_class_add_pad_template (gstelement_class,
130 gst_static_pad_template_get (&gst_rtp_h265_depay_sink_template));
132 gst_element_class_set_static_metadata (gstelement_class,
133 "RTP H265 depayloader", "Codec/Depayloader/Network/RTP",
134 "Extracts H265 video from RTP packets (draft-ietf-payload-rtp-h265-03.txt)",
135 "Jurgen Slowack <jurgenslowack@gmail.com>");
136 gstelement_class->change_state = gst_rtp_h265_depay_change_state;
138 gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_h265_depay_process;
139 gstrtpbasedepayload_class->set_caps = gst_rtp_h265_depay_setcaps;
140 gstrtpbasedepayload_class->handle_event = gst_rtp_h265_depay_handle_event;
144 gst_rtp_h265_depay_init (GstRtpH265Depay * rtph265depay)
146 rtph265depay->adapter = gst_adapter_new ();
147 rtph265depay->picture_adapter = gst_adapter_new ();
148 rtph265depay->byte_stream = DEFAULT_BYTE_STREAM;
149 rtph265depay->stream_format = (gchar *) g_malloc (10);
150 rtph265depay->merge = DEFAULT_ACCESS_UNIT;
151 rtph265depay->vps = g_ptr_array_new_with_free_func (
152 (GDestroyNotify) gst_buffer_unref);
153 rtph265depay->sps = g_ptr_array_new_with_free_func (
154 (GDestroyNotify) gst_buffer_unref);
155 rtph265depay->pps = g_ptr_array_new_with_free_func (
156 (GDestroyNotify) gst_buffer_unref);
160 gst_rtp_h265_depay_reset (GstRtpH265Depay * rtph265depay)
162 gst_adapter_clear (rtph265depay->adapter);
163 rtph265depay->wait_start = TRUE;
164 gst_adapter_clear (rtph265depay->picture_adapter);
165 rtph265depay->picture_start = FALSE;
166 rtph265depay->last_keyframe = FALSE;
167 rtph265depay->last_ts = 0;
168 rtph265depay->current_fu_type = 0;
169 rtph265depay->new_codec_data = FALSE;
170 g_ptr_array_set_size (rtph265depay->vps, 0);
171 g_ptr_array_set_size (rtph265depay->sps, 0);
172 g_ptr_array_set_size (rtph265depay->pps, 0);
176 gst_rtp_h265_depay_finalize (GObject * object)
178 GstRtpH265Depay *rtph265depay;
180 rtph265depay = GST_RTP_H265_DEPAY (object);
182 if (rtph265depay->codec_data)
183 gst_buffer_unref (rtph265depay->codec_data);
185 g_free (rtph265depay->stream_format);
187 g_object_unref (rtph265depay->adapter);
188 g_object_unref (rtph265depay->picture_adapter);
190 g_ptr_array_free (rtph265depay->vps, TRUE);
191 g_ptr_array_free (rtph265depay->sps, TRUE);
192 g_ptr_array_free (rtph265depay->pps, TRUE);
194 G_OBJECT_CLASS (parent_class)->finalize (object);
198 gst_rtp_h265_depay_negotiate (GstRtpH265Depay * rtph265depay)
201 gint byte_stream = -1;
205 gst_pad_get_allowed_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay));
207 GST_DEBUG_OBJECT (rtph265depay, "allowed caps: %" GST_PTR_FORMAT, caps);
210 if (gst_caps_get_size (caps) > 0) {
211 GstStructure *s = gst_caps_get_structure (caps, 0);
212 const gchar *str = NULL;
214 if ((str = gst_structure_get_string (s, "stream-format"))) {
216 strcpy (rtph265depay->stream_format, str);
218 if (strcmp (str, "hev1") == 0) {
220 } else if (strcmp (str, "hvc1") == 0) {
222 } else if (strcmp (str, "byte-stream") == 0) {
225 GST_DEBUG_OBJECT (rtph265depay, "unknown stream-format: %s", str);
229 if ((str = gst_structure_get_string (s, "alignment"))) {
230 if (strcmp (str, "au") == 0) {
232 } else if (strcmp (str, "nal") == 0) {
235 GST_DEBUG_OBJECT (rtph265depay, "unknown alignment: %s", str);
239 gst_caps_unref (caps);
242 if (byte_stream != -1) {
243 GST_DEBUG_OBJECT (rtph265depay, "downstream requires byte-stream %d",
245 rtph265depay->byte_stream = byte_stream;
247 GST_DEBUG_OBJECT (rtph265depay, "defaulting to byte-stream %d",
248 DEFAULT_BYTE_STREAM);
249 strcpy (rtph265depay->stream_format, "byte-stream");
250 rtph265depay->byte_stream = DEFAULT_BYTE_STREAM;
253 GST_DEBUG_OBJECT (rtph265depay, "downstream requires merge %d", merge);
254 rtph265depay->merge = merge;
256 GST_DEBUG_OBJECT (rtph265depay, "defaulting to merge %d",
257 DEFAULT_ACCESS_UNIT);
258 rtph265depay->merge = DEFAULT_ACCESS_UNIT;
262 /* Stolen from bad/gst/mpegtsdemux/payloader_parsers.c */
263 /* variable length Exp-Golomb parsing according to H.265 spec section 9.2*/
265 read_golomb (GstBitReader * br, guint32 * value)
267 guint8 b, leading_zeros = -1;
270 for (b = 0; !b; leading_zeros++) {
271 if (!gst_bit_reader_get_bits_uint8 (br, &b, 1))
276 *value = (*value >> 1) - 1;
277 if (leading_zeros > 0) {
279 if (!gst_bit_reader_get_bits_uint32 (br, &tmp, leading_zeros))
288 parse_sps (GstMapInfo * map, guint32 * sps_id)
289 { /* To parse seq_parameter_set_id */
290 GstBitReader br = GST_BIT_READER_INIT (map->data + 15,
296 if (!read_golomb (&br, sps_id))
303 parse_pps (GstMapInfo * map, guint32 * sps_id, guint32 * pps_id)
304 { /* To parse picture_parameter_set_id */
305 GstBitReader br = GST_BIT_READER_INIT (map->data + 2,
311 if (!read_golomb (&br, pps_id))
313 if (!read_golomb (&br, sps_id))
321 gst_rtp_h265_set_src_caps (GstRtpH265Depay * rtph265depay)
326 if (!rtph265depay->byte_stream &&
327 (!rtph265depay->new_codec_data ||
328 rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0
329 || rtph265depay->pps->len == 0))
332 srccaps = gst_caps_new_simple ("video/x-h265",
333 "stream-format", G_TYPE_STRING,
334 rtph265depay->stream_format,
335 "alignment", G_TYPE_STRING, rtph265depay->merge ? "au" : "nal", NULL);
337 if (!rtph265depay->byte_stream) {
339 GstBuffer *codec_data;
342 guint num_vps = rtph265depay->vps->len;
343 guint num_sps = rtph265depay->sps->len;
344 guint num_pps = rtph265depay->pps->len;
345 GstMapInfo map, nalmap;
348 guint8 num_arrays = 0;
353 guint32 max_sub_layers_minus1, temporal_id_nesting_flag, chroma_format_idc,
354 bit_depth_luma_minus8, bit_depth_chroma_minus8,
355 min_spatial_segmentation_idc;
357 /* Fixme: Current implementation is not embedding SEI in codec_data */
362 /* start with 23 bytes header */
365 num_arrays = (num_vps > 0) + (num_sps > 0) + (num_pps > 0);
368 /* add size of vps, sps & pps */
369 for (i = 0; i < num_vps; i++)
370 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
371 for (i = 0; i < num_sps; i++)
372 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
373 for (i = 0; i < num_pps; i++)
374 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
376 GST_DEBUG_OBJECT (rtph265depay,
377 "constructing codec_data: num_vps =%d num_sps=%d, num_pps=%d", num_vps,
380 codec_data = gst_buffer_new_and_alloc (len);
381 g_debug ("alloc_len: %u", len);
382 gst_buffer_map (codec_data, &map, GST_MAP_READWRITE);
385 memset (data, 0, map.size);
387 /* Parsing sps to get the info required further on */
389 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
392 max_sub_layers_minus1 = ((nalmap.data[2]) >> 1) & 0x07;
393 temporal_id_nesting_flag = nalmap.data[2] & 0x01;
395 gst_bit_reader_init (&br, nalmap.data + 15, nalmap.size - 15);
397 read_golomb (&br, &tmp); /* sps_seq_parameter_set_id */
398 read_golomb (&br, &chroma_format_idc); /* chroma_format_idc */
400 if (chroma_format_idc == 3)
402 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* separate_colour_plane_flag */
404 read_golomb (&br, &tmp); /* pic_width_in_luma_samples */
405 read_golomb (&br, &tmp); /* pic_height_in_luma_samples */
407 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* conformance_window_flag */
409 read_golomb (&br, &tmp); /* conf_win_left_offset */
410 read_golomb (&br, &tmp); /* conf_win_right_offset */
411 read_golomb (&br, &tmp); /* conf_win_top_offset */
412 read_golomb (&br, &tmp); /* conf_win_bottom_offset */
415 read_golomb (&br, &bit_depth_luma_minus8); /* bit_depth_luma_minus8 */
416 read_golomb (&br, &bit_depth_chroma_minus8); /* bit_depth_chroma_minus8 */
418 GST_DEBUG_OBJECT (rtph265depay,
419 "Ignoring min_spatial_segmentation for now (assuming zero)");
421 min_spatial_segmentation_idc = 0; /* NOTE - we ignore this for now, but in a perfect world, we should continue parsing to obtain the real value */
425 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
427 /* HEVCDecoderConfigurationVersion = 1 */
430 /* Copy from profile_tier_level (Rec. ITU-T H.265 (04/2013) section 7.3.3
432 * profile_space | tier_flat | profile_idc |
433 * profile_compatibility_flags | constraint_indicator_flags |
434 * level_idc | progressive_source_flag | interlaced_source_flag
435 * non_packed_constraint_flag | frame_only_constraint_flag
436 * reserved_zero_44bits | level_idc */
437 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
439 for (i = 0; i < 12; i++)
440 data[i + 1] = nalmap.data[i];
441 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
443 /* min_spatial_segmentation_idc */
444 GST_WRITE_UINT16_BE (data + 13, min_spatial_segmentation_idc);
446 data[15] = 0xfc; /* keeping parrallelismType as zero (unknown) */
447 data[16] = 0xfc | chroma_format_idc;
448 data[17] = 0xf8 | bit_depth_luma_minus8;
449 data[18] = 0xf8 | bit_depth_chroma_minus8;
450 data[19] = 0x00; /* keep avgFrameRate as unspecified */
451 data[20] = 0x00; /* keep avgFrameRate as unspecified */
452 /* constFrameRate(2 bits): 0, stream may or may not be of constant framerate
453 * numTemporalLayers (3 bits): number of temporal layers, value from SPS
454 * TemporalIdNested (1 bit): sps_temporal_id_nesting_flag from SPS
455 * lengthSizeMinusOne (2 bits): plus 1 indicates the length of the NALUnitLength */
457 0x00 | ((max_sub_layers_minus1 +
458 1) << 3) | (temporal_id_nesting_flag << 2) | (nl - 1);
459 GST_WRITE_UINT8 (data + 22, num_arrays); /* numOfArrays */
465 /* array_completeness | reserved_zero bit | nal_unit_type */
466 data[0] = 0x00 | 0x20;
469 GST_WRITE_UINT16_BE (data, num_vps);
472 for (i = 0; i < num_vps; i++) {
474 gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
475 GST_WRITE_UINT16_BE (data, nal_size);
476 gst_buffer_extract (g_ptr_array_index (rtph265depay->vps, i), 0,
478 data += 2 + nal_size;
479 GST_DEBUG_OBJECT (rtph265depay, "Copied VPS %d of length %u", i,
486 /* array_completeness | reserved_zero bit | nal_unit_type */
487 data[0] = 0x00 | 0x21;
490 GST_WRITE_UINT16_BE (data, num_sps);
493 for (i = 0; i < num_sps; i++) {
495 gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
496 GST_WRITE_UINT16_BE (data, nal_size);
497 gst_buffer_extract (g_ptr_array_index (rtph265depay->sps, i), 0,
499 data += 2 + nal_size;
500 GST_DEBUG_OBJECT (rtph265depay, "Copied SPS %d of length %u", i,
507 /* array_completeness | reserved_zero bit | nal_unit_type */
508 data[0] = 0x00 | 0x22;
511 GST_WRITE_UINT16_BE (data, num_pps);
514 for (i = 0; i < num_pps; i++) {
516 gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
517 GST_WRITE_UINT16_BE (data, nal_size);
518 gst_buffer_extract (g_ptr_array_index (rtph265depay->pps, i), 0,
520 data += 2 + nal_size;
521 GST_DEBUG_OBJECT (rtph265depay, "Copied PPS %d of length %u", i,
526 new_size = data - map.data;
527 gst_buffer_unmap (codec_data, &map);
528 gst_buffer_set_size (codec_data, new_size);
530 gst_caps_set_simple (srccaps,
531 "codec_data", GST_TYPE_BUFFER, codec_data, NULL);
532 gst_buffer_unref (codec_data);
535 if (gst_pad_has_current_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay))) {
537 gst_pad_get_current_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay));
539 /* Only update the caps if they are not equal. For
540 * AVC we don't update caps if only the codec_data
541 * changes. This is the same behaviour as in h264parse
542 * and gstrtph264depay
544 if (rtph265depay->byte_stream) {
545 if (!gst_caps_is_equal (srccaps, old_caps))
547 gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
552 GstCaps *tmp_caps = gst_caps_copy (srccaps);
553 GstStructure *old_s, *tmp_s;
555 old_s = gst_caps_get_structure (old_caps, 0);
556 tmp_s = gst_caps_get_structure (tmp_caps, 0);
557 if (gst_structure_has_field (old_s, "codec_data"))
558 gst_structure_set_value (tmp_s, "codec_data",
559 gst_structure_get_value (old_s, "codec_data"));
561 if (!gst_caps_is_equal (old_caps, tmp_caps))
563 gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
568 gst_caps_unref (tmp_caps);
572 gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
576 gst_caps_unref (srccaps);
578 /* Insert SPS and PPS into the stream on next opportunity */
579 if (rtph265depay->sps->len > 0 || rtph265depay->pps->len > 0) {
581 GstBuffer *codec_data;
586 for (i = 0; i < rtph265depay->sps->len; i++) {
587 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
590 for (i = 0; i < rtph265depay->pps->len; i++) {
591 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
594 codec_data = gst_buffer_new_and_alloc (len);
595 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
598 for (i = 0; i < rtph265depay->sps->len; i++) {
599 GstBuffer *sps_buf = g_ptr_array_index (rtph265depay->sps, i);
600 guint sps_size = gst_buffer_get_size (sps_buf);
602 if (rtph265depay->byte_stream)
603 memcpy (data, sync_bytes, sizeof (sync_bytes));
605 GST_WRITE_UINT32_BE (data, sps_size);
606 gst_buffer_extract (sps_buf, 0, data + 4, -1);
607 data += 4 + sps_size;
610 for (i = 0; i < rtph265depay->pps->len; i++) {
611 GstBuffer *pps_buf = g_ptr_array_index (rtph265depay->pps, i);
612 guint pps_size = gst_buffer_get_size (pps_buf);
614 if (rtph265depay->byte_stream)
615 memcpy (data, sync_bytes, sizeof (sync_bytes));
617 GST_WRITE_UINT32_BE (data, pps_size);
618 gst_buffer_extract (pps_buf, 0, data + 4, -1);
619 data += 4 + pps_size;
622 gst_buffer_unmap (codec_data, &map);
623 if (rtph265depay->codec_data)
624 gst_buffer_unref (rtph265depay->codec_data);
625 rtph265depay->codec_data = codec_data;
629 rtph265depay->new_codec_data = FALSE;
635 gst_rtp_h265_add_vps_sps_pps (GstElement * rtph265, GPtrArray * vps_array,
636 GPtrArray * sps_array, GPtrArray * pps_array, GstBuffer * nal)
642 gst_buffer_map (nal, &map, GST_MAP_READ);
644 type = (map.data[0] >> 1) & 0x3f;
646 if (type == GST_H265_VPS_NUT) {
647 guint32 vps_id = (map.data[2] >> 4) & 0x0f;
649 for (i = 0; i < vps_array->len; i++) {
650 GstBuffer *vps = g_ptr_array_index (vps_array, i);
654 gst_buffer_map (vps, &vpsmap, GST_MAP_READ);
655 tmp_vps_id = (vpsmap.data[2] >> 4) & 0x0f;
657 if (vps_id == tmp_vps_id) {
658 if (map.size == vpsmap.size &&
659 memcmp (map.data, vpsmap.data, vpsmap.size) == 0) {
660 GST_LOG_OBJECT (rtph265, "Unchanged VPS %u, not updating", vps_id);
661 gst_buffer_unmap (vps, &vpsmap);
664 gst_buffer_unmap (vps, &vpsmap);
665 g_ptr_array_remove_index_fast (vps_array, i);
666 g_ptr_array_add (vps_array, nal);
667 GST_LOG_OBJECT (rtph265, "Modified VPS %u, replacing", vps_id);
671 gst_buffer_unmap (vps, &vpsmap);
673 GST_LOG_OBJECT (rtph265, "Adding new VPS %u", vps_id);
674 g_ptr_array_add (vps_array, nal);
675 } else if (type == GST_H265_SPS_NUT) {
678 if (!parse_sps (&map, &sps_id)) {
679 GST_WARNING_OBJECT (rtph265, "Invalid SPS,"
680 " can't parse seq_parameter_set_id");
684 for (i = 0; i < sps_array->len; i++) {
685 GstBuffer *sps = g_ptr_array_index (sps_array, i);
689 gst_buffer_map (sps, &spsmap, GST_MAP_READ);
690 parse_sps (&spsmap, &tmp_sps_id);
692 if (sps_id == tmp_sps_id) {
693 if (map.size == spsmap.size &&
694 memcmp (map.data, spsmap.data, spsmap.size) == 0) {
695 GST_LOG_OBJECT (rtph265, "Unchanged SPS %u, not updating", sps_id);
696 gst_buffer_unmap (sps, &spsmap);
699 gst_buffer_unmap (sps, &spsmap);
700 g_ptr_array_remove_index_fast (sps_array, i);
701 g_ptr_array_add (sps_array, nal);
702 GST_LOG_OBJECT (rtph265, "Modified SPS %u, replacing", sps_id);
706 gst_buffer_unmap (sps, &spsmap);
708 GST_LOG_OBJECT (rtph265, "Adding new SPS %u", sps_id);
709 g_ptr_array_add (sps_array, nal);
710 } else if (type == GST_H265_PPS_NUT) {
714 if (!parse_pps (&map, &sps_id, &pps_id)) {
715 GST_WARNING_OBJECT (rtph265, "Invalid PPS,"
716 " can't parse seq_parameter_set_id or pic_parameter_set_id");
720 for (i = 0; i < pps_array->len; i++) {
721 GstBuffer *pps = g_ptr_array_index (pps_array, i);
727 gst_buffer_map (pps, &ppsmap, GST_MAP_READ);
728 parse_pps (&ppsmap, &tmp_sps_id, &tmp_pps_id);
730 if (pps_id == tmp_pps_id) {
731 if (map.size == ppsmap.size &&
732 memcmp (map.data, ppsmap.data, ppsmap.size) == 0) {
733 GST_LOG_OBJECT (rtph265, "Unchanged PPS %u:%u, not updating", sps_id,
735 gst_buffer_unmap (pps, &ppsmap);
738 gst_buffer_unmap (pps, &ppsmap);
739 g_ptr_array_remove_index_fast (pps_array, i);
740 g_ptr_array_add (pps_array, nal);
741 GST_LOG_OBJECT (rtph265, "Modified PPS %u:%u, replacing",
746 gst_buffer_unmap (pps, &ppsmap);
748 GST_LOG_OBJECT (rtph265, "Adding new PPS %u:%i", sps_id, pps_id);
749 g_ptr_array_add (pps_array, nal);
755 gst_buffer_unmap (nal, &map);
760 gst_buffer_unmap (nal, &map);
761 gst_buffer_unref (nal);
768 gst_rtp_h265_depay_add_vps_sps_pps (GstRtpH265Depay * rtph265depay,
771 if (gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265depay),
772 rtph265depay->vps, rtph265depay->sps, rtph265depay->pps, nal))
773 rtph265depay->new_codec_data = TRUE;
777 gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
780 GstStructure *structure = gst_caps_get_structure (caps, 0);
781 GstRtpH265Depay *rtph265depay;
783 GstBuffer *codec_data;
787 rtph265depay = GST_RTP_H265_DEPAY (depayload);
789 if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
791 depayload->clock_rate = clock_rate;
793 /* Base64 encoded, comma separated config NALs */
794 ps = gst_structure_get_string (structure, "sprop-parameter-sets");
796 /* negotiate with downstream w.r.t. output format and alignment */
797 gst_rtp_h265_depay_negotiate (rtph265depay);
799 if (rtph265depay->byte_stream && ps != NULL) {
800 /* for bytestream we only need the parameter sets but we don't error out
801 * when they are not there, we assume they are in the stream. */
806 params = g_strsplit (ps, ",", 0);
808 /* count total number of bytes in base64. Also include the sync bytes in
809 * front of the params. */
811 for (i = 0; params[i]; i++) {
812 len += strlen (params[i]);
813 len += sizeof (sync_bytes);
815 /* we seriously overshoot the length, but it's fine. */
816 codec_data = gst_buffer_new_and_alloc (len);
818 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
821 for (i = 0; params[i]; i++) {
825 GST_DEBUG_OBJECT (depayload, "decoding param %d (%s)", i, params[i]);
826 memcpy (ptr, sync_bytes, sizeof (sync_bytes));
827 ptr += sizeof (sync_bytes);
829 g_base64_decode_step (params[i], strlen (params[i]), ptr, &state,
831 GST_DEBUG_OBJECT (depayload, "decoded %d bytes", len);
832 total += len + sizeof (sync_bytes);
835 gst_buffer_unmap (codec_data, &map);
836 gst_buffer_resize (codec_data, 0, total);
839 /* keep the codec_data, we need to send it as the first buffer. We cannot
840 * push it in the adapter because the adapter might be flushed on discont.
842 if (rtph265depay->codec_data)
843 gst_buffer_unref (rtph265depay->codec_data);
844 rtph265depay->codec_data = codec_data;
845 } else if (!rtph265depay->byte_stream) {
850 goto incomplete_caps;
852 params = g_strsplit (ps, ",", 0);
854 GST_DEBUG_OBJECT (depayload, "we have %d params", g_strv_length (params));
856 /* start with 23 bytes header */
857 for (i = 0; params[i]; i++) {
864 nal_len = strlen (params[i]);
865 nal = gst_buffer_new_and_alloc (nal_len);
866 gst_buffer_map (nal, &nalmap, GST_MAP_READWRITE);
869 g_base64_decode_step (params[i], nal_len, nalmap.data, &state, &save);
871 GST_DEBUG_OBJECT (depayload, "adding param %d as %s", i,
872 (((nalmap.data[0] >> 1) & 0x3f) ==
873 32) ? "VPS" : (((nalmap.data[0] >> 1) & 0x3f) ==
874 33) ? "SPS" : "PPS");
876 gst_buffer_unmap (nal, &nalmap);
877 gst_buffer_set_size (nal, nal_len);
879 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay, nal);
883 if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0)
884 goto incomplete_caps;
887 return gst_rtp_h265_set_src_caps (rtph265depay);
892 GST_DEBUG_OBJECT (depayload, "we have incomplete caps,"
893 " doing setcaps later");
899 gst_rtp_h265_complete_au (GstRtpH265Depay * rtph265depay,
900 GstClockTime * out_timestamp, gboolean * out_keyframe)
905 /* we had a picture in the adapter and we completed it */
906 GST_DEBUG_OBJECT (rtph265depay, "taking completed AU");
907 outsize = gst_adapter_available (rtph265depay->picture_adapter);
908 outbuf = gst_adapter_take_buffer (rtph265depay->picture_adapter, outsize);
910 *out_timestamp = rtph265depay->last_ts;
911 *out_keyframe = rtph265depay->last_keyframe;
913 rtph265depay->last_keyframe = FALSE;
914 rtph265depay->picture_start = FALSE;
919 /* VPS/SPS/PPS/RADL/TSA/RASL/IDR/CRA is considered key, all others DELTA;
920 * so downstream waiting for keyframe can pick up at VPS/SPS/PPS/IDR */
922 #define NAL_TYPE_IS_PARAMETER_SET(nt) ( ((nt) == GST_H265_VPS_NUT)\
923 || ((nt) == GST_H265_SPS_NUT)\
924 || ((nt) == GST_H265_PPS_NUT) )
926 #define NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt) ( ((nt) == GST_H265_NAL_SLICE_TRAIL_N)\
927 || ((nt) == GST_H265_NAL_SLICE_TRAIL_R)\
928 || ((nt) == GST_H265_NAL_SLICE_TSA_N)\
929 || ((nt) == GST_H265_NAL_SLICE_TSA_R)\
930 || ((nt) == GST_H265_NAL_SLICE_STSA_N)\
931 || ((nt) == GST_H265_NAL_SLICE_STSA_R)\
932 || ((nt) == GST_H265_NAL_SLICE_RASL_N)\
933 || ((nt) == GST_H265_NAL_SLICE_RASL_R)\
934 || ((nt) == GST_H265_NAL_SLICE_BLA_W_LP)\
935 || ((nt) == GST_H265_NAL_SLICE_BLA_W_RADL)\
936 || ((nt) == GST_H265_NAL_SLICE_BLA_N_LP)\
937 || ((nt) == GST_H265_NAL_SLICE_IDR_W_RADL)\
938 || ((nt) == GST_H265_NAL_SLICE_IDR_N_LP)\
939 || ((nt) == GST_H265_NAL_SLICE_CRA_NUT) )
941 #define NAL_TYPE_IS_KEY(nt) (NAL_TYPE_IS_PARAMETER_SET(nt) || NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt))
944 gst_rtp_h265_depay_handle_nal (GstRtpH265Depay * rtph265depay, GstBuffer * nal,
945 GstClockTime in_timestamp, gboolean marker)
947 GstRTPBaseDepayload *depayload = GST_RTP_BASE_DEPAYLOAD (rtph265depay);
950 GstBuffer *outbuf = NULL;
951 GstClockTime out_timestamp;
952 gboolean keyframe, out_keyframe;
954 gst_buffer_map (nal, &map, GST_MAP_READ);
955 if (G_UNLIKELY (map.size < 5))
958 nal_type = (map.data[4] >> 1) & 0x3f;
959 GST_DEBUG_OBJECT (rtph265depay, "handle NAL type %d (RTP marker bit %d)",
962 keyframe = NAL_TYPE_IS_KEY (nal_type);
964 out_keyframe = keyframe;
965 out_timestamp = in_timestamp;
967 if (!rtph265depay->byte_stream) {
968 if (NAL_TYPE_IS_PARAMETER_SET (nal_type)) {
969 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay,
970 gst_buffer_copy_region (nal, GST_BUFFER_COPY_ALL,
971 4, gst_buffer_get_size (nal) - 4));
972 gst_buffer_unmap (nal, &map);
973 gst_buffer_unref (nal);
975 } else if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0) {
976 /* Down push down any buffer in non-bytestream mode if the SPS/PPS haven't
979 gst_pad_push_event (GST_RTP_BASE_DEPAYLOAD_SINKPAD (depayload),
980 gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
981 gst_structure_new ("GstForceKeyUnit",
982 "all-headers", G_TYPE_BOOLEAN, TRUE, NULL)));
983 gst_buffer_unmap (nal, &map);
984 gst_buffer_unref (nal);
988 if (rtph265depay->new_codec_data &&
989 rtph265depay->sps->len > 0 && rtph265depay->pps->len > 0)
990 gst_rtp_h265_set_src_caps (rtph265depay);
993 if (rtph265depay->merge) {
994 gboolean start = FALSE, complete = FALSE;
996 /* marker bit isn't mandatory so in the following code we try to detect
997 * an AU boundary (see H.265 spec section 7.4.2.4.4) */
999 if (NAL_TYPE_IS_CODED_SLICE_SEGMENT (nal_type)) {
1000 /* A NAL unit (X) ends an access unit if the next-occurring VCL NAL unit (Y) has the high-order bit of the first byte after its NAL unit header equal to 1 */
1002 if (((map.data[6] >> 7) & 0x01) == 1) {
1005 } else if ((nal_type >= 32 && nal_type <= 35)
1006 || nal_type == 39 || (nal_type >= 41 && nal_type <= 44)
1007 || (nal_type >= 48 && nal_type <= 55)) {
1008 /* VPS, SPS, PPS, SEI, ... terminate an access unit */
1011 GST_DEBUG_OBJECT (depayload, "start %d, complete %d", start, complete);
1013 if (complete && rtph265depay->picture_start)
1014 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1017 /* add to adapter */
1018 gst_buffer_unmap (nal, &map);
1020 GST_DEBUG_OBJECT (depayload, "adding NAL to picture adapter");
1021 gst_adapter_push (rtph265depay->picture_adapter, nal);
1022 rtph265depay->last_ts = in_timestamp;
1023 rtph265depay->last_keyframe |= keyframe;
1024 rtph265depay->picture_start |= start;
1027 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1030 /* no merge, output is input nal */
1031 GST_DEBUG_OBJECT (depayload, "using NAL as output");
1033 gst_buffer_unmap (nal, &map);
1037 /* prepend codec_data */
1038 if (rtph265depay->codec_data) {
1039 GST_DEBUG_OBJECT (depayload, "prepending codec_data");
1040 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay),
1041 rtph265depay->codec_data, outbuf,
1042 g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1043 outbuf = gst_buffer_append (rtph265depay->codec_data, outbuf);
1044 rtph265depay->codec_data = NULL;
1045 out_keyframe = TRUE;
1047 outbuf = gst_buffer_make_writable (outbuf);
1049 gst_rtp_drop_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1050 g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1052 GST_BUFFER_PTS (outbuf) = out_timestamp;
1055 GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1057 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1065 GST_WARNING_OBJECT (depayload, "dropping short NAL");
1066 gst_buffer_unmap (nal, &map);
1067 gst_buffer_unref (nal);
1073 gst_rtp_h265_push_fragmentation_unit (GstRtpH265Depay * rtph265depay,
1080 outsize = gst_adapter_available (rtph265depay->adapter);
1081 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
1083 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1084 GST_DEBUG_OBJECT (rtph265depay, "output %d bytes", outsize);
1086 if (rtph265depay->byte_stream) {
1087 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1089 goto not_implemented;
1091 gst_buffer_unmap (outbuf, &map);
1093 rtph265depay->current_fu_type = 0;
1095 outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf,
1096 rtph265depay->fu_timestamp, rtph265depay->fu_marker);
1098 if (send && outbuf) {
1099 gst_rtp_base_depayload_push (GST_RTP_BASE_DEPAYLOAD (rtph265depay), outbuf);
1106 GST_ERROR_OBJECT (rtph265depay,
1107 ("Only bytestream format is currently supported."));
1108 gst_buffer_unmap (outbuf, &map);
1114 gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
1116 GstRtpH265Depay *rtph265depay;
1117 GstBuffer *outbuf = NULL;
1118 guint8 nal_unit_type;
1120 rtph265depay = GST_RTP_H265_DEPAY (depayload);
1122 /* flush remaining data on discont */
1123 if (GST_BUFFER_IS_DISCONT (rtp->buffer)) {
1124 gst_adapter_clear (rtph265depay->adapter);
1125 rtph265depay->wait_start = TRUE;
1126 rtph265depay->current_fu_type = 0;
1134 guint outsize, nalu_size;
1135 GstClockTime timestamp;
1137 guint8 nuh_layer_id, nuh_temporal_id_plus1;
1141 gboolean donl_present = FALSE;
1144 timestamp = GST_BUFFER_PTS (rtp->buffer);
1146 payload_len = gst_rtp_buffer_get_payload_len (rtp);
1147 payload = gst_rtp_buffer_get_payload (rtp);
1148 marker = gst_rtp_buffer_get_marker (rtp);
1150 GST_DEBUG_OBJECT (rtph265depay, "receiving %d bytes", payload_len);
1152 if (payload_len == 0)
1155 /* +---------------+---------------+
1156 * |0|1|2|3|4|5|6|7|0|1|2|3|4|5|6|7|
1157 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1158 * |F| Type | LayerId | TID |
1159 * +-------------+-----------------+
1164 nal_unit_type = (payload[0] >> 1) & 0x3f;
1165 nuh_layer_id = ((payload[0] & 0x01) << 5) | (payload[1] >> 3); /* should be zero for now but this could change in future HEVC extensions */
1166 nuh_temporal_id_plus1 = payload[1] & 0x03;
1168 /* At least two byte header with type */
1171 GST_DEBUG_OBJECT (rtph265depay,
1172 "NAL header nal_unit_type %d, nuh_temporal_id_plus1 %d", nal_unit_type,
1173 nuh_temporal_id_plus1);
1175 GST_FIXME_OBJECT (rtph265depay, "Assuming DONL field is not present");
1177 /* FIXME - assuming DONL field is not present for now */
1178 /*donl_present = (tx-mode == "MST") || (sprop-max-don-diff > 0); */
1180 /* If FU unit was being processed, but the current nal is of a different
1181 * type. Assume that the remote payloader is buggy (didn't set the end bit
1182 * when the FU ended) and send out what we gathered thusfar */
1183 if (G_UNLIKELY (rtph265depay->current_fu_type != 0 &&
1184 nal_unit_type != rtph265depay->current_fu_type))
1185 gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE);
1187 switch (nal_unit_type) {
1190 GST_DEBUG_OBJECT (rtph265depay, "Processing aggregation packet");
1192 /* Aggregation packet (section 4.7) */
1194 /* An example of an AP packet containing two aggregation units
1195 without the DONL and DOND fields
1198 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1199 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1201 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1202 | PayloadHdr (Type=48) | NALU 1 Size |
1203 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1205 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ NALU 1 Data |
1208 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1209 | . . . | NALU 2 Size | NALU 2 HDR |
1210 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1212 +-+-+-+-+-+-+-+-+ NALU 2 Data |
1214 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1215 | :...OPTIONAL RTP padding |
1216 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1220 payload += header_len;
1221 payload_len -= header_len;
1223 rtph265depay->wait_start = FALSE;
1227 goto not_implemented_donl_present;
1230 while (payload_len > 2) {
1232 nalu_size = (payload[0] << 8) | payload[1];
1234 /* dont include nalu_size */
1235 if (nalu_size > (payload_len - 2))
1236 nalu_size = payload_len - 2;
1238 outsize = nalu_size + sizeof (sync_bytes);
1239 outbuf = gst_buffer_new_and_alloc (outsize);
1241 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1242 if (rtph265depay->byte_stream) {
1243 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1245 goto not_implemented;
1248 /* strip NALU size */
1252 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1253 gst_buffer_unmap (outbuf, &map);
1255 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1256 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1259 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1262 gst_adapter_push (rtph265depay->adapter, outbuf);
1264 payload += nalu_size;
1265 payload_len -= nalu_size;
1268 outsize = gst_adapter_available (rtph265depay->adapter);
1270 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
1272 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1279 GST_DEBUG_OBJECT (rtph265depay, "Processing Fragmentation Unit");
1281 /* Fragmentation units (FUs) Section 4.8 */
1283 /* The structure of a Fragmentation Unit (FU)
1285 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1286 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1287 | PayloadHdr (Type=49) | FU header | DONL (cond) |
1288 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-|
1293 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1294 | :...OPTIONAL RTP padding |
1295 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1301 payload += header_len;
1302 payload_len -= header_len;
1304 /* processing FU header */
1305 S = (payload[0] & 0x80) == 0x80;
1306 E = (payload[0] & 0x40) == 0x40;
1308 GST_DEBUG_OBJECT (rtph265depay,
1309 "FU header with S %d, E %d, nal_unit_type %d", S, E,
1312 if (rtph265depay->wait_start && !S)
1317 goto not_implemented_donl_present;
1322 GST_DEBUG_OBJECT (rtph265depay, "Start of Fragmentation Unit");
1324 /* If a new FU unit started, while still processing an older one.
1325 * Assume that the remote payloader is buggy (doesn't set the end
1326 * bit) and send out what we've gathered thusfar */
1327 if (G_UNLIKELY (rtph265depay->current_fu_type != 0))
1328 gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE);
1330 rtph265depay->current_fu_type = nal_unit_type;
1331 rtph265depay->fu_timestamp = timestamp;
1333 rtph265depay->wait_start = FALSE;
1335 /* reconstruct NAL header */
1337 ((payload[0] & 0x3f) << 9) | (nuh_layer_id << 3) |
1338 nuh_temporal_id_plus1;
1340 /* go back one byte so we can copy the payload + two bytes more in the front which
1341 * will be overwritten by the nal_header
1346 nalu_size = payload_len;
1347 outsize = nalu_size + sizeof (sync_bytes);
1348 outbuf = gst_buffer_new_and_alloc (outsize);
1350 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1351 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1352 map.data[sizeof (sync_bytes)] = nal_header >> 8;
1353 map.data[sizeof (sync_bytes) + 1] = nal_header & 0xff;
1354 gst_buffer_unmap (outbuf, &map);
1356 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1357 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1359 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1361 /* and assemble in the adapter */
1362 gst_adapter_push (rtph265depay->adapter, outbuf);
1365 GST_DEBUG_OBJECT (rtph265depay,
1366 "Following part of Fragmentation Unit");
1368 /* strip off FU header byte */
1372 outsize = payload_len;
1373 outbuf = gst_buffer_new_and_alloc (outsize);
1374 gst_buffer_fill (outbuf, 0, payload, outsize);
1376 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1377 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1379 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1381 /* and assemble in the adapter */
1382 gst_adapter_push (rtph265depay->adapter, outbuf);
1386 rtph265depay->fu_marker = marker;
1388 /* if NAL unit ends, flush the adapter */
1390 outbuf = gst_rtp_h265_push_fragmentation_unit (rtph265depay, FALSE);
1391 GST_DEBUG_OBJECT (rtph265depay, "End of Fragmentation Unit");
1396 goto not_implemented; /* PACI packets Section 4.9 */
1399 rtph265depay->wait_start = FALSE;
1401 /* All other cases: Single NAL unit packet Section 4.6 */
1402 /* the entire payload is the output buffer */
1406 goto not_implemented_donl_present;
1409 nalu_size = payload_len;
1410 outsize = nalu_size + sizeof (sync_bytes);
1411 outbuf = gst_buffer_new_and_alloc (outsize);
1413 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1414 if (rtph265depay->byte_stream) {
1415 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1417 goto not_implemented;
1419 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1420 gst_buffer_unmap (outbuf, &map);
1422 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1423 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1425 outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1437 GST_DEBUG_OBJECT (rtph265depay, "empty packet");
1442 GST_DEBUG_OBJECT (rtph265depay, "waiting for start");
1446 not_implemented_donl_present:
1448 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1449 (NULL), ("DONL field present not supported yet"));
1455 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1456 (NULL), ("NAL unit type %d not supported yet", nal_unit_type));
1462 gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay, GstEvent * event)
1464 GstRtpH265Depay *rtph265depay;
1466 rtph265depay = GST_RTP_H265_DEPAY (depay);
1468 switch (GST_EVENT_TYPE (event)) {
1469 case GST_EVENT_FLUSH_STOP:
1470 gst_rtp_h265_depay_reset (rtph265depay);
1477 GST_RTP_BASE_DEPAYLOAD_CLASS (parent_class)->handle_event (depay, event);
1480 static GstStateChangeReturn
1481 gst_rtp_h265_depay_change_state (GstElement * element,
1482 GstStateChange transition)
1484 GstRtpH265Depay *rtph265depay;
1485 GstStateChangeReturn ret;
1487 rtph265depay = GST_RTP_H265_DEPAY (element);
1489 switch (transition) {
1490 case GST_STATE_CHANGE_NULL_TO_READY:
1492 case GST_STATE_CHANGE_READY_TO_PAUSED:
1493 gst_rtp_h265_depay_reset (rtph265depay);
1499 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1501 switch (transition) {
1502 case GST_STATE_CHANGE_READY_TO_NULL:
1511 gst_rtp_h265_depay_plugin_init (GstPlugin * plugin)
1513 GST_DEBUG_CATEGORY_INIT (rtph265depay_debug, "rtph265depay", 0,
1514 "H265 Video RTP Depayloader");
1516 return gst_element_register (plugin, "rtph265depay",
1517 GST_RANK_SECONDARY, GST_TYPE_RTP_H265_DEPAY);