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 ("video/x-h265, stream-format=(string)hvc1, alignment=(string)au; "
51 /* FIXME: hev1 format is not supported yet */
53 "stream-format = (string) hev1, alignment = (string) au; " */
55 "stream-format = (string) byte-stream, alignment = (string) { nal, au }")
58 static GstStaticPadTemplate gst_rtp_h265_depay_sink_template =
59 GST_STATIC_PAD_TEMPLATE ("sink",
62 GST_STATIC_CAPS ("application/x-rtp, "
63 "media = (string) \"video\", "
64 "clock-rate = (int) 90000, " "encoding-name = (string) \"H265\"")
65 /** optional parameters **/
66 /* "profile-space = (int) [ 0, 3 ], " */
67 /* "profile-id = (int) [ 0, 31 ], " */
68 /* "tier-flag = (int) [ 0, 1 ], " */
69 /* "level-id = (int) [ 0, 255 ], " */
70 /* "interop-constraints = (string) ANY, " */
71 /* "profile-compatibility-indicator = (string) ANY, " */
72 /* "sprop-sub-layer-id = (int) [ 0, 6 ], " */
73 /* "recv-sub-layer-id = (int) [ 0, 6 ], " */
74 /* "max-recv-level-id = (int) [ 0, 255 ], " */
75 /* "tx-mode = (string) {MST , SST}, " */
76 /* "sprop-vps = (string) ANY, " */
77 /* "sprop-sps = (string) ANY, " */
78 /* "sprop-pps = (string) ANY, " */
79 /* "sprop-sei = (string) ANY, " */
80 /* "max-lsr = (int) ANY, " *//* MUST be in the range of MaxLumaSR to 16 * MaxLumaSR, inclusive */
81 /* "max-lps = (int) ANY, " *//* MUST be in the range of MaxLumaPS to 16 * MaxLumaPS, inclusive */
82 /* "max-cpb = (int) ANY, " *//* MUST be in the range of MaxCPB to 16 * MaxCPB, inclusive */
83 /* "max-dpb = (int) [1, 16], " */
84 /* "max-br = (int) ANY, " *//* MUST be in the range of MaxBR to 16 * MaxBR, inclusive, for the highest level */
85 /* "max-tr = (int) ANY, " *//* MUST be in the range of MaxTileRows to 16 * MaxTileRows, inclusive, for the highest level */
86 /* "max-tc = (int) ANY, " *//* MUST be in the range of MaxTileCols to 16 * MaxTileCols, inclusive, for the highest level */
87 /* "max-fps = (int) ANY, " */
88 /* "sprop-max-don-diff = (int) [0, 32767], " */
89 /* "sprop-depack-buf-nalus = (int) [0, 32767], " */
90 /* "sprop-depack-buf-nalus = (int) [0, 4294967295], " */
91 /* "depack-buf-cap = (int) [1, 4294967295], " */
92 /* "sprop-segmentation-id = (int) [0, 3], " */
93 /* "sprop-spatial-segmentation-idc = (string) ANY, " */
94 /* "dec-parallel-cap = (string) ANY, " */
97 #define gst_rtp_h265_depay_parent_class parent_class
98 G_DEFINE_TYPE (GstRtpH265Depay, gst_rtp_h265_depay,
99 GST_TYPE_RTP_BASE_DEPAYLOAD);
101 static void gst_rtp_h265_depay_finalize (GObject * object);
103 static GstStateChangeReturn gst_rtp_h265_depay_change_state (GstElement *
104 element, GstStateChange transition);
106 static GstBuffer *gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload,
108 static gboolean gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * filter,
110 static gboolean gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay,
114 gst_rtp_h265_depay_class_init (GstRtpH265DepayClass * klass)
116 GObjectClass *gobject_class;
117 GstElementClass *gstelement_class;
118 GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
120 gobject_class = (GObjectClass *) klass;
121 gstelement_class = (GstElementClass *) klass;
122 gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
124 gobject_class->finalize = gst_rtp_h265_depay_finalize;
126 gst_element_class_add_static_pad_template (gstelement_class,
127 &gst_rtp_h265_depay_src_template);
128 gst_element_class_add_static_pad_template (gstelement_class,
129 &gst_rtp_h265_depay_sink_template);
131 gst_element_class_set_static_metadata (gstelement_class,
132 "RTP H265 depayloader", "Codec/Depayloader/Network/RTP",
133 "Extracts H265 video from RTP packets (RFC 7798)",
134 "Jurgen Slowack <jurgenslowack@gmail.com>");
135 gstelement_class->change_state = gst_rtp_h265_depay_change_state;
137 gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_h265_depay_process;
138 gstrtpbasedepayload_class->set_caps = gst_rtp_h265_depay_setcaps;
139 gstrtpbasedepayload_class->handle_event = gst_rtp_h265_depay_handle_event;
143 gst_rtp_h265_depay_init (GstRtpH265Depay * rtph265depay)
145 rtph265depay->adapter = gst_adapter_new ();
146 rtph265depay->picture_adapter = gst_adapter_new ();
147 rtph265depay->byte_stream = DEFAULT_BYTE_STREAM;
148 rtph265depay->stream_format = NULL;
149 rtph265depay->merge = DEFAULT_ACCESS_UNIT;
150 rtph265depay->vps = g_ptr_array_new_with_free_func (
151 (GDestroyNotify) gst_buffer_unref);
152 rtph265depay->sps = g_ptr_array_new_with_free_func (
153 (GDestroyNotify) gst_buffer_unref);
154 rtph265depay->pps = g_ptr_array_new_with_free_func (
155 (GDestroyNotify) gst_buffer_unref);
159 gst_rtp_h265_depay_reset (GstRtpH265Depay * rtph265depay, gboolean hard)
161 gst_adapter_clear (rtph265depay->adapter);
162 rtph265depay->wait_start = TRUE;
163 gst_adapter_clear (rtph265depay->picture_adapter);
164 rtph265depay->picture_start = FALSE;
165 rtph265depay->last_keyframe = FALSE;
166 rtph265depay->last_ts = 0;
167 rtph265depay->current_fu_type = 0;
168 rtph265depay->new_codec_data = FALSE;
169 g_ptr_array_set_size (rtph265depay->vps, 0);
170 g_ptr_array_set_size (rtph265depay->sps, 0);
171 g_ptr_array_set_size (rtph265depay->pps, 0);
174 if (rtph265depay->allocator != NULL) {
175 gst_object_unref (rtph265depay->allocator);
176 rtph265depay->allocator = NULL;
178 gst_allocation_params_init (&rtph265depay->params);
183 gst_rtp_h265_depay_finalize (GObject * object)
185 GstRtpH265Depay *rtph265depay;
187 rtph265depay = GST_RTP_H265_DEPAY (object);
189 if (rtph265depay->codec_data)
190 gst_buffer_unref (rtph265depay->codec_data);
192 g_free (rtph265depay->stream_format);
194 g_object_unref (rtph265depay->adapter);
195 g_object_unref (rtph265depay->picture_adapter);
197 g_ptr_array_free (rtph265depay->vps, TRUE);
198 g_ptr_array_free (rtph265depay->sps, TRUE);
199 g_ptr_array_free (rtph265depay->pps, TRUE);
201 G_OBJECT_CLASS (parent_class)->finalize (object);
205 gst_rtp_h265_depay_negotiate (GstRtpH265Depay * rtph265depay)
208 gint byte_stream = -1;
212 gst_pad_get_allowed_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay));
214 GST_DEBUG_OBJECT (rtph265depay, "allowed caps: %" GST_PTR_FORMAT, caps);
217 if (gst_caps_get_size (caps) > 0) {
218 GstStructure *s = gst_caps_get_structure (caps, 0);
219 const gchar *str = NULL;
221 if ((str = gst_structure_get_string (s, "stream-format"))) {
222 g_free (rtph265depay->stream_format);
223 rtph265depay->stream_format = g_strdup (str);
225 if (strcmp (str, "hev1") == 0) {
227 } else if (strcmp (str, "hvc1") == 0) {
229 } else if (strcmp (str, "byte-stream") == 0) {
232 GST_DEBUG_OBJECT (rtph265depay, "unknown stream-format: %s", str);
236 if ((str = gst_structure_get_string (s, "alignment"))) {
237 if (strcmp (str, "au") == 0) {
239 } else if (strcmp (str, "nal") == 0) {
242 GST_DEBUG_OBJECT (rtph265depay, "unknown alignment: %s", str);
246 gst_caps_unref (caps);
249 if (byte_stream != -1) {
250 GST_DEBUG_OBJECT (rtph265depay, "downstream requires byte-stream %d",
252 rtph265depay->byte_stream = byte_stream;
254 GST_DEBUG_OBJECT (rtph265depay, "defaulting to byte-stream %d",
255 DEFAULT_BYTE_STREAM);
256 g_free (rtph265depay->stream_format);
257 rtph265depay->stream_format = g_strdup ("byte-stream");
258 rtph265depay->byte_stream = DEFAULT_BYTE_STREAM;
261 GST_DEBUG_OBJECT (rtph265depay, "downstream requires merge %d", merge);
262 rtph265depay->merge = merge;
264 GST_DEBUG_OBJECT (rtph265depay, "defaulting to merge %d",
265 DEFAULT_ACCESS_UNIT);
266 rtph265depay->merge = DEFAULT_ACCESS_UNIT;
271 parse_sps (GstMapInfo * map, guint32 * sps_id)
272 { /* To parse seq_parameter_set_id */
273 GstBitReader br = GST_BIT_READER_INIT (map->data + 15,
276 GST_MEMDUMP ("SPS", map->data, map->size);
281 if (!gst_rtp_read_golomb (&br, sps_id))
288 parse_pps (GstMapInfo * map, guint32 * sps_id, guint32 * pps_id)
289 { /* To parse picture_parameter_set_id */
290 GstBitReader br = GST_BIT_READER_INIT (map->data + 2,
293 GST_MEMDUMP ("PPS", map->data, map->size);
298 if (!gst_rtp_read_golomb (&br, pps_id))
300 if (!gst_rtp_read_golomb (&br, sps_id))
307 gst_rtp_h265_depay_set_output_caps (GstRtpH265Depay * rtph265depay,
310 GstAllocationParams params;
311 GstAllocator *allocator = NULL;
315 gst_allocation_params_init (¶ms);
317 srcpad = GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay);
319 res = gst_pad_set_caps (srcpad, caps);
324 query = gst_query_new_allocation (caps, TRUE);
325 if (!gst_pad_peer_query (srcpad, query)) {
326 GST_DEBUG_OBJECT (rtph265depay, "downstream ALLOCATION query failed");
329 if (gst_query_get_n_allocation_params (query) > 0) {
330 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
333 gst_query_unref (query);
336 if (rtph265depay->allocator)
337 gst_object_unref (rtph265depay->allocator);
339 rtph265depay->allocator = allocator;
340 rtph265depay->params = params;
346 gst_rtp_h265_set_src_caps (GstRtpH265Depay * rtph265depay)
348 gboolean res, update_caps;
353 if (!rtph265depay->byte_stream &&
354 (!rtph265depay->new_codec_data ||
355 rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0
356 || rtph265depay->pps->len == 0))
359 srccaps = gst_caps_new_simple ("video/x-h265",
360 "stream-format", G_TYPE_STRING, rtph265depay->stream_format,
361 "alignment", G_TYPE_STRING, rtph265depay->merge ? "au" : "nal", NULL);
363 if (!rtph265depay->byte_stream) {
364 GstBuffer *codec_data;
367 guint num_vps = rtph265depay->vps->len;
368 guint num_sps = rtph265depay->sps->len;
369 guint num_pps = rtph265depay->pps->len;
370 GstMapInfo map, nalmap;
372 guint8 num_arrays = 0;
377 guint32 max_sub_layers_minus1, temporal_id_nesting_flag, chroma_format_idc,
378 bit_depth_luma_minus8, bit_depth_chroma_minus8,
379 min_spatial_segmentation_idc;
381 /* Fixme: Current implementation is not embedding SEI in codec_data */
386 /* start with 23 bytes header */
389 num_arrays = (num_vps > 0) + (num_sps > 0) + (num_pps > 0);
390 len += 3 * num_arrays;
392 /* add size of vps, sps & pps */
393 for (i = 0; i < num_vps; i++)
394 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
395 for (i = 0; i < num_sps; i++)
396 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
397 for (i = 0; i < num_pps; i++)
398 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
400 GST_DEBUG_OBJECT (rtph265depay,
401 "constructing codec_data: num_vps =%d num_sps=%d, num_pps=%d", num_vps,
404 codec_data = gst_buffer_new_and_alloc (len);
405 gst_buffer_map (codec_data, &map, GST_MAP_READWRITE);
408 memset (data, 0, map.size);
410 /* Parsing sps to get the info required further on */
412 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
415 max_sub_layers_minus1 = ((nalmap.data[2]) >> 1) & 0x07;
416 temporal_id_nesting_flag = nalmap.data[2] & 0x01;
418 gst_bit_reader_init (&br, nalmap.data + 15, nalmap.size - 15);
420 gst_rtp_read_golomb (&br, &tmp); /* sps_seq_parameter_set_id */
421 gst_rtp_read_golomb (&br, &chroma_format_idc); /* chroma_format_idc */
423 if (chroma_format_idc == 3)
425 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* separate_colour_plane_flag */
427 gst_rtp_read_golomb (&br, &tmp); /* pic_width_in_luma_samples */
428 gst_rtp_read_golomb (&br, &tmp); /* pic_height_in_luma_samples */
430 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* conformance_window_flag */
432 gst_rtp_read_golomb (&br, &tmp); /* conf_win_left_offset */
433 gst_rtp_read_golomb (&br, &tmp); /* conf_win_right_offset */
434 gst_rtp_read_golomb (&br, &tmp); /* conf_win_top_offset */
435 gst_rtp_read_golomb (&br, &tmp); /* conf_win_bottom_offset */
438 gst_rtp_read_golomb (&br, &bit_depth_luma_minus8); /* bit_depth_luma_minus8 */
439 gst_rtp_read_golomb (&br, &bit_depth_chroma_minus8); /* bit_depth_chroma_minus8 */
441 GST_DEBUG_OBJECT (rtph265depay,
442 "Ignoring min_spatial_segmentation for now (assuming zero)");
444 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 */
446 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
448 /* HEVCDecoderConfigurationVersion = 1 */
451 /* Copy from profile_tier_level (Rec. ITU-T H.265 (04/2013) section 7.3.3
453 * profile_space | tier_flat | profile_idc |
454 * profile_compatibility_flags | constraint_indicator_flags |
455 * level_idc | progressive_source_flag | interlaced_source_flag
456 * non_packed_constraint_flag | frame_only_constraint_flag
457 * reserved_zero_44bits | level_idc */
458 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
460 for (i = 0; i < 12; i++)
461 data[i + 1] = nalmap.data[i];
462 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
464 /* min_spatial_segmentation_idc */
465 GST_WRITE_UINT16_BE (data + 13, min_spatial_segmentation_idc);
467 data[15] = 0xfc; /* keeping parrallelismType as zero (unknown) */
468 data[16] = 0xfc | chroma_format_idc;
469 data[17] = 0xf8 | bit_depth_luma_minus8;
470 data[18] = 0xf8 | bit_depth_chroma_minus8;
471 data[19] = 0x00; /* keep avgFrameRate as unspecified */
472 data[20] = 0x00; /* keep avgFrameRate as unspecified */
473 /* constFrameRate(2 bits): 0, stream may or may not be of constant framerate
474 * numTemporalLayers (3 bits): number of temporal layers, value from SPS
475 * TemporalIdNested (1 bit): sps_temporal_id_nesting_flag from SPS
476 * lengthSizeMinusOne (2 bits): plus 1 indicates the length of the NALUnitLength */
477 /* we always output NALs with 4-byte nal unit length markers (or sync code) */
478 data[21] = rtph265depay->byte_stream ? 0x00 : 0x03;
479 data[21] |= ((max_sub_layers_minus1 + 1) << 3);
480 data[21] |= (temporal_id_nesting_flag << 2);
481 GST_WRITE_UINT8 (data + 22, num_arrays); /* numOfArrays */
487 /* array_completeness | reserved_zero bit | nal_unit_type */
488 data[0] = 0x00 | 0x20;
491 GST_WRITE_UINT16_BE (data, num_vps);
494 for (i = 0; i < num_vps; i++) {
496 gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
497 GST_WRITE_UINT16_BE (data, nal_size);
498 gst_buffer_extract (g_ptr_array_index (rtph265depay->vps, i), 0,
500 data += 2 + nal_size;
501 GST_DEBUG_OBJECT (rtph265depay, "Copied VPS %d of length %u", i,
508 /* array_completeness | reserved_zero bit | nal_unit_type */
509 data[0] = 0x00 | 0x21;
512 GST_WRITE_UINT16_BE (data, num_sps);
515 for (i = 0; i < num_sps; i++) {
517 gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
518 GST_WRITE_UINT16_BE (data, nal_size);
519 gst_buffer_extract (g_ptr_array_index (rtph265depay->sps, i), 0,
521 data += 2 + nal_size;
522 GST_DEBUG_OBJECT (rtph265depay, "Copied SPS %d of length %u", i,
529 /* array_completeness | reserved_zero bit | nal_unit_type */
530 data[0] = 0x00 | 0x22;
533 GST_WRITE_UINT16_BE (data, num_pps);
536 for (i = 0; i < num_pps; i++) {
538 gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
539 GST_WRITE_UINT16_BE (data, nal_size);
540 gst_buffer_extract (g_ptr_array_index (rtph265depay->pps, i), 0,
542 data += 2 + nal_size;
543 GST_DEBUG_OBJECT (rtph265depay, "Copied PPS %d of length %u", i,
548 new_size = data - map.data;
549 gst_buffer_unmap (codec_data, &map);
550 gst_buffer_set_size (codec_data, new_size);
552 gst_caps_set_simple (srccaps,
553 "codec_data", GST_TYPE_BUFFER, codec_data, NULL);
554 gst_buffer_unref (codec_data);
557 srcpad = GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay);
559 old_caps = gst_pad_get_current_caps (srcpad);
560 if (old_caps != NULL) {
562 /* Only update the caps if they are not equal. For
563 * AVC we don't update caps if only the codec_data
564 * changes. This is the same behaviour as in h264parse
565 * and gstrtph264depay
567 if (rtph265depay->byte_stream) {
568 update_caps = !gst_caps_is_equal (srccaps, old_caps);
570 GstCaps *tmp_caps = gst_caps_copy (srccaps);
571 GstStructure *old_s, *tmp_s;
573 old_s = gst_caps_get_structure (old_caps, 0);
574 tmp_s = gst_caps_get_structure (tmp_caps, 0);
575 if (gst_structure_has_field (old_s, "codec_data"))
576 gst_structure_set_value (tmp_s, "codec_data",
577 gst_structure_get_value (old_s, "codec_data"));
579 update_caps = !gst_caps_is_equal (old_caps, tmp_caps);
580 gst_caps_unref (tmp_caps);
582 gst_caps_unref (old_caps);
588 res = gst_rtp_h265_depay_set_output_caps (rtph265depay, srccaps);
593 gst_caps_unref (srccaps);
595 /* Insert SPS and PPS into the stream on next opportunity */
596 if (rtph265depay->sps->len > 0 || rtph265depay->pps->len > 0) {
598 GstBuffer *codec_data;
603 for (i = 0; i < rtph265depay->sps->len; i++) {
604 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
607 for (i = 0; i < rtph265depay->pps->len; i++) {
608 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
611 codec_data = gst_buffer_new_and_alloc (len);
612 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
615 for (i = 0; i < rtph265depay->sps->len; i++) {
616 GstBuffer *sps_buf = g_ptr_array_index (rtph265depay->sps, i);
617 guint sps_size = gst_buffer_get_size (sps_buf);
619 if (rtph265depay->byte_stream)
620 memcpy (data, sync_bytes, sizeof (sync_bytes));
622 GST_WRITE_UINT32_BE (data, sps_size);
623 gst_buffer_extract (sps_buf, 0, data + 4, -1);
624 data += 4 + sps_size;
627 for (i = 0; i < rtph265depay->pps->len; i++) {
628 GstBuffer *pps_buf = g_ptr_array_index (rtph265depay->pps, i);
629 guint pps_size = gst_buffer_get_size (pps_buf);
631 if (rtph265depay->byte_stream)
632 memcpy (data, sync_bytes, sizeof (sync_bytes));
634 GST_WRITE_UINT32_BE (data, pps_size);
635 gst_buffer_extract (pps_buf, 0, data + 4, -1);
636 data += 4 + pps_size;
639 gst_buffer_unmap (codec_data, &map);
640 if (rtph265depay->codec_data)
641 gst_buffer_unref (rtph265depay->codec_data);
642 rtph265depay->codec_data = codec_data;
646 rtph265depay->new_codec_data = FALSE;
652 gst_rtp_h265_add_vps_sps_pps (GstElement * rtph265, GPtrArray * vps_array,
653 GPtrArray * sps_array, GPtrArray * pps_array, GstBuffer * nal)
659 gst_buffer_map (nal, &map, GST_MAP_READ);
661 type = (map.data[0] >> 1) & 0x3f;
663 if (type == GST_H265_VPS_NUT) {
664 guint32 vps_id = (map.data[2] >> 4) & 0x0f;
666 for (i = 0; i < vps_array->len; i++) {
667 GstBuffer *vps = g_ptr_array_index (vps_array, i);
671 gst_buffer_map (vps, &vpsmap, GST_MAP_READ);
672 tmp_vps_id = (vpsmap.data[2] >> 4) & 0x0f;
674 if (vps_id == tmp_vps_id) {
675 if (map.size == vpsmap.size &&
676 memcmp (map.data, vpsmap.data, vpsmap.size) == 0) {
677 GST_LOG_OBJECT (rtph265, "Unchanged VPS %u, not updating", vps_id);
678 gst_buffer_unmap (vps, &vpsmap);
681 gst_buffer_unmap (vps, &vpsmap);
682 g_ptr_array_remove_index_fast (vps_array, i);
683 g_ptr_array_add (vps_array, nal);
684 GST_LOG_OBJECT (rtph265, "Modified VPS %u, replacing", vps_id);
688 gst_buffer_unmap (vps, &vpsmap);
690 GST_LOG_OBJECT (rtph265, "Adding new VPS %u", vps_id);
691 g_ptr_array_add (vps_array, nal);
692 } else if (type == GST_H265_SPS_NUT) {
695 if (!parse_sps (&map, &sps_id)) {
696 GST_WARNING_OBJECT (rtph265, "Invalid SPS,"
697 " can't parse seq_parameter_set_id");
701 for (i = 0; i < sps_array->len; i++) {
702 GstBuffer *sps = g_ptr_array_index (sps_array, i);
706 gst_buffer_map (sps, &spsmap, GST_MAP_READ);
707 parse_sps (&spsmap, &tmp_sps_id);
709 if (sps_id == tmp_sps_id) {
710 if (map.size == spsmap.size &&
711 memcmp (map.data, spsmap.data, spsmap.size) == 0) {
712 GST_LOG_OBJECT (rtph265, "Unchanged SPS %u, not updating", sps_id);
713 gst_buffer_unmap (sps, &spsmap);
716 gst_buffer_unmap (sps, &spsmap);
717 g_ptr_array_remove_index_fast (sps_array, i);
718 g_ptr_array_add (sps_array, nal);
719 GST_LOG_OBJECT (rtph265, "Modified SPS %u, replacing", sps_id);
723 gst_buffer_unmap (sps, &spsmap);
725 GST_LOG_OBJECT (rtph265, "Adding new SPS %u", sps_id);
726 g_ptr_array_add (sps_array, nal);
727 } else if (type == GST_H265_PPS_NUT) {
731 if (!parse_pps (&map, &sps_id, &pps_id)) {
732 GST_WARNING_OBJECT (rtph265, "Invalid PPS,"
733 " can't parse seq_parameter_set_id or pic_parameter_set_id");
737 for (i = 0; i < pps_array->len; i++) {
738 GstBuffer *pps = g_ptr_array_index (pps_array, i);
744 gst_buffer_map (pps, &ppsmap, GST_MAP_READ);
745 parse_pps (&ppsmap, &tmp_sps_id, &tmp_pps_id);
747 if (pps_id == tmp_pps_id) {
748 if (map.size == ppsmap.size &&
749 memcmp (map.data, ppsmap.data, ppsmap.size) == 0) {
750 GST_LOG_OBJECT (rtph265, "Unchanged PPS %u:%u, not updating", sps_id,
752 gst_buffer_unmap (pps, &ppsmap);
755 gst_buffer_unmap (pps, &ppsmap);
756 g_ptr_array_remove_index_fast (pps_array, i);
757 g_ptr_array_add (pps_array, nal);
758 GST_LOG_OBJECT (rtph265, "Modified PPS %u:%u, replacing",
763 gst_buffer_unmap (pps, &ppsmap);
765 GST_LOG_OBJECT (rtph265, "Adding new PPS %u:%i", sps_id, pps_id);
766 g_ptr_array_add (pps_array, nal);
772 gst_buffer_unmap (nal, &map);
777 gst_buffer_unmap (nal, &map);
778 gst_buffer_unref (nal);
785 gst_rtp_h265_depay_add_vps_sps_pps (GstRtpH265Depay * rtph265depay,
788 if (gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265depay),
789 rtph265depay->vps, rtph265depay->sps, rtph265depay->pps, nal))
790 rtph265depay->new_codec_data = TRUE;
794 gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
797 GstStructure *structure = gst_caps_get_structure (caps, 0);
798 GstRtpH265Depay *rtph265depay;
806 rtph265depay = GST_RTP_H265_DEPAY (depayload);
808 if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
810 depayload->clock_rate = clock_rate;
812 /* Base64 encoded, comma separated config NALs */
813 vps = gst_structure_get_string (structure, "sprop-vps");
814 sps = gst_structure_get_string (structure, "sprop-sps");
815 pps = gst_structure_get_string (structure, "sprop-pps");
816 if (vps == NULL || sps == NULL || pps == NULL) {
819 ps = g_strdup_printf ("%s,%s,%s", vps, sps, pps);
822 /* negotiate with downstream w.r.t. output format and alignment */
823 gst_rtp_h265_depay_negotiate (rtph265depay);
825 if (rtph265depay->byte_stream && ps != NULL) {
826 /* for bytestream we only need the parameter sets but we don't error out
827 * when they are not there, we assume they are in the stream. */
829 GstBuffer *codec_data;
833 params = g_strsplit (ps, ",", 0);
835 /* count total number of bytes in base64. Also include the sync bytes in
836 * front of the params. */
838 for (i = 0; params[i]; i++) {
839 len += strlen (params[i]);
840 len += sizeof (sync_bytes);
842 /* we seriously overshoot the length, but it's fine. */
843 codec_data = gst_buffer_new_and_alloc (len);
845 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
848 for (i = 0; params[i]; i++) {
852 GST_DEBUG_OBJECT (depayload, "decoding param %d (%s)", i, params[i]);
853 memcpy (ptr, sync_bytes, sizeof (sync_bytes));
854 ptr += sizeof (sync_bytes);
856 g_base64_decode_step (params[i], strlen (params[i]), ptr, &state,
858 GST_DEBUG_OBJECT (depayload, "decoded %d bytes", len);
859 total += len + sizeof (sync_bytes);
862 gst_buffer_unmap (codec_data, &map);
863 gst_buffer_resize (codec_data, 0, total);
866 /* keep the codec_data, we need to send it as the first buffer. We cannot
867 * push it in the adapter because the adapter might be flushed on discont.
869 if (rtph265depay->codec_data)
870 gst_buffer_unref (rtph265depay->codec_data);
871 rtph265depay->codec_data = codec_data;
872 } else if (!rtph265depay->byte_stream) {
877 goto incomplete_caps;
879 params = g_strsplit (ps, ",", 0);
881 GST_DEBUG_OBJECT (depayload, "we have %d params", g_strv_length (params));
883 /* start with 23 bytes header */
884 for (i = 0; params[i]; i++) {
891 nal_len = strlen (params[i]);
893 GST_WARNING_OBJECT (depayload, "empty param '%s' (#%d)", params[i], i);
896 nal = gst_buffer_new_and_alloc (nal_len);
897 gst_buffer_map (nal, &nalmap, GST_MAP_READWRITE);
900 g_base64_decode_step (params[i], nal_len, nalmap.data, &state, &save);
902 GST_DEBUG_OBJECT (depayload, "adding param %d as %s", i,
903 (((nalmap.data[0] >> 1) & 0x3f) ==
904 32) ? "VPS" : (((nalmap.data[0] >> 1) & 0x3f) ==
905 33) ? "SPS" : "PPS");
907 gst_buffer_unmap (nal, &nalmap);
908 gst_buffer_set_size (nal, nal_len);
910 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay, nal);
914 if (rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0 ||
915 rtph265depay->pps->len == 0) {
916 goto incomplete_caps;
922 return gst_rtp_h265_set_src_caps (rtph265depay);
927 GST_DEBUG_OBJECT (depayload, "we have incomplete caps,"
928 " doing setcaps later");
935 gst_rtp_h265_depay_allocate_output_buffer (GstRtpH265Depay * depay, gsize size)
937 GstBuffer *buffer = NULL;
939 g_return_val_if_fail (size > 0, NULL);
941 GST_LOG_OBJECT (depay, "want output buffer of %u bytes", (guint) size);
943 buffer = gst_buffer_new_allocate (depay->allocator, size, &depay->params);
944 if (buffer == NULL) {
945 GST_INFO_OBJECT (depay, "couldn't allocate output buffer");
946 buffer = gst_buffer_new_allocate (NULL, size, NULL);
953 gst_rtp_h265_complete_au (GstRtpH265Depay * rtph265depay,
954 GstClockTime * out_timestamp, gboolean * out_keyframe)
959 guint outsize, offset = 0;
960 gint b, n_bufs, m, n_mem;
962 /* we had a picture in the adapter and we completed it */
963 GST_DEBUG_OBJECT (rtph265depay, "taking completed AU");
964 outsize = gst_adapter_available (rtph265depay->picture_adapter);
966 outbuf = gst_rtp_h265_depay_allocate_output_buffer (rtph265depay, outsize);
971 if (!gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE))
974 list = gst_adapter_take_buffer_list (rtph265depay->picture_adapter, outsize);
976 n_bufs = gst_buffer_list_length (list);
977 for (b = 0; b < n_bufs; ++b) {
978 GstBuffer *buf = gst_buffer_list_get (list, b);
980 n_mem = gst_buffer_n_memory (buf);
981 for (m = 0; m < n_mem; ++m) {
982 GstMemory *mem = gst_buffer_peek_memory (buf, m);
983 gsize mem_size = gst_memory_get_sizes (mem, NULL, NULL);
986 if (gst_memory_map (mem, &mem_map, GST_MAP_READ)) {
987 memcpy (outmap.data + offset, mem_map.data, mem_size);
988 gst_memory_unmap (mem, &mem_map);
990 memset (outmap.data + offset, 0, mem_size);
995 gst_rtp_copy_video_meta (rtph265depay, outbuf, buf);
997 gst_buffer_list_unref (list);
998 gst_buffer_unmap (outbuf, &outmap);
1000 *out_timestamp = rtph265depay->last_ts;
1001 *out_keyframe = rtph265depay->last_keyframe;
1003 rtph265depay->last_keyframe = FALSE;
1004 rtph265depay->picture_start = FALSE;
1009 /* VPS/SPS/PPS/RADL/TSA/RASL/IDR/CRA is considered key, all others DELTA;
1010 * so downstream waiting for keyframe can pick up at VPS/SPS/PPS/IDR */
1012 #define NAL_TYPE_IS_PARAMETER_SET(nt) ( ((nt) == GST_H265_VPS_NUT)\
1013 || ((nt) == GST_H265_SPS_NUT)\
1014 || ((nt) == GST_H265_PPS_NUT) )
1016 #define NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt) ( ((nt) == GST_H265_NAL_SLICE_TRAIL_N)\
1017 || ((nt) == GST_H265_NAL_SLICE_TRAIL_R)\
1018 || ((nt) == GST_H265_NAL_SLICE_TSA_N)\
1019 || ((nt) == GST_H265_NAL_SLICE_TSA_R)\
1020 || ((nt) == GST_H265_NAL_SLICE_STSA_N)\
1021 || ((nt) == GST_H265_NAL_SLICE_STSA_R)\
1022 || ((nt) == GST_H265_NAL_SLICE_RASL_N)\
1023 || ((nt) == GST_H265_NAL_SLICE_RASL_R)\
1024 || ((nt) == GST_H265_NAL_SLICE_BLA_W_LP)\
1025 || ((nt) == GST_H265_NAL_SLICE_BLA_W_RADL)\
1026 || ((nt) == GST_H265_NAL_SLICE_BLA_N_LP)\
1027 || ((nt) == GST_H265_NAL_SLICE_IDR_W_RADL)\
1028 || ((nt) == GST_H265_NAL_SLICE_IDR_N_LP)\
1029 || ((nt) == GST_H265_NAL_SLICE_CRA_NUT) )
1031 /* Intra random access point */
1032 #define NAL_TYPE_IS_IRAP(nt) (((nt) == GST_H265_NAL_SLICE_BLA_W_LP) \
1033 || ((nt) == GST_H265_NAL_SLICE_BLA_W_RADL) \
1034 || ((nt) == GST_H265_NAL_SLICE_BLA_N_LP) \
1035 || ((nt) == GST_H265_NAL_SLICE_IDR_W_RADL) \
1036 || ((nt) == GST_H265_NAL_SLICE_IDR_N_LP) \
1037 || ((nt) == GST_H265_NAL_SLICE_CRA_NUT))
1039 #define NAL_TYPE_IS_KEY(nt) (NAL_TYPE_IS_PARAMETER_SET(nt) || NAL_TYPE_IS_IRAP(nt))
1042 gst_rtp_h265_depay_handle_nal (GstRtpH265Depay * rtph265depay, GstBuffer * nal,
1043 GstClockTime in_timestamp, gboolean marker)
1045 GstRTPBaseDepayload *depayload = GST_RTP_BASE_DEPAYLOAD (rtph265depay);
1048 GstBuffer *outbuf = NULL;
1049 GstClockTime out_timestamp;
1050 gboolean keyframe, out_keyframe;
1052 gst_buffer_map (nal, &map, GST_MAP_READ);
1053 if (G_UNLIKELY (map.size < 5))
1056 nal_type = (map.data[4] >> 1) & 0x3f;
1057 GST_DEBUG_OBJECT (rtph265depay, "handle NAL type %d (RTP marker bit %d)",
1060 keyframe = NAL_TYPE_IS_KEY (nal_type);
1062 out_keyframe = keyframe;
1063 out_timestamp = in_timestamp;
1065 if (!rtph265depay->byte_stream) {
1066 if (NAL_TYPE_IS_PARAMETER_SET (nal_type)) {
1067 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay,
1068 gst_buffer_copy_region (nal, GST_BUFFER_COPY_ALL,
1069 4, gst_buffer_get_size (nal) - 4));
1070 gst_buffer_unmap (nal, &map);
1071 gst_buffer_unref (nal);
1073 } else if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0) {
1074 /* Down push down any buffer in non-bytestream mode if the SPS/PPS haven't
1077 gst_pad_push_event (GST_RTP_BASE_DEPAYLOAD_SINKPAD (depayload),
1078 gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
1079 gst_structure_new ("GstForceKeyUnit",
1080 "all-headers", G_TYPE_BOOLEAN, TRUE, NULL)));
1081 gst_buffer_unmap (nal, &map);
1082 gst_buffer_unref (nal);
1086 if (rtph265depay->new_codec_data &&
1087 rtph265depay->sps->len > 0 && rtph265depay->pps->len > 0)
1088 gst_rtp_h265_set_src_caps (rtph265depay);
1091 if (rtph265depay->merge) {
1092 gboolean start = FALSE, complete = FALSE;
1094 /* marker bit isn't mandatory so in the following code we try to detect
1095 * an AU boundary (see H.265 spec section 7.4.2.4.4) */
1097 if (NAL_TYPE_IS_CODED_SLICE_SEGMENT (nal_type)) {
1098 /* 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 */
1100 if (((map.data[6] >> 7) & 0x01) == 1) {
1103 } else if ((nal_type >= 32 && nal_type <= 35)
1104 || nal_type == 39 || (nal_type >= 41 && nal_type <= 44)
1105 || (nal_type >= 48 && nal_type <= 55)) {
1106 /* VPS, SPS, PPS, SEI, ... terminate an access unit */
1109 GST_DEBUG_OBJECT (depayload, "start %d, complete %d", start, complete);
1111 if (complete && rtph265depay->picture_start)
1112 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1115 /* add to adapter */
1116 gst_buffer_unmap (nal, &map);
1118 GST_DEBUG_OBJECT (depayload, "adding NAL to picture adapter");
1119 gst_adapter_push (rtph265depay->picture_adapter, nal);
1120 rtph265depay->last_ts = in_timestamp;
1121 rtph265depay->last_keyframe |= keyframe;
1122 rtph265depay->picture_start |= start;
1125 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1128 /* no merge, output is input nal */
1129 GST_DEBUG_OBJECT (depayload, "using NAL as output");
1131 gst_buffer_unmap (nal, &map);
1135 /* prepend codec_data */
1136 if (rtph265depay->codec_data) {
1137 GST_DEBUG_OBJECT (depayload, "prepending codec_data");
1138 gst_rtp_copy_video_meta (rtph265depay, rtph265depay->codec_data, outbuf);
1139 outbuf = gst_buffer_append (rtph265depay->codec_data, outbuf);
1140 rtph265depay->codec_data = NULL;
1141 out_keyframe = TRUE;
1143 outbuf = gst_buffer_make_writable (outbuf);
1145 gst_rtp_drop_non_video_meta (rtph265depay, outbuf);
1147 GST_BUFFER_PTS (outbuf) = out_timestamp;
1150 GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1152 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1154 gst_rtp_base_depayload_push (depayload, outbuf);
1162 GST_WARNING_OBJECT (depayload, "dropping short NAL");
1163 gst_buffer_unmap (nal, &map);
1164 gst_buffer_unref (nal);
1170 gst_rtp_h265_finish_fragmentation_unit (GstRtpH265Depay * rtph265depay)
1176 outsize = gst_adapter_available (rtph265depay->adapter);
1177 g_assert (outsize >= 4);
1179 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
1181 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1182 GST_DEBUG_OBJECT (rtph265depay, "output %d bytes", outsize);
1184 if (rtph265depay->byte_stream) {
1185 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1187 GST_WRITE_UINT32_BE (map.data, outsize - 4);
1189 gst_buffer_unmap (outbuf, &map);
1191 rtph265depay->current_fu_type = 0;
1193 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf,
1194 rtph265depay->fu_timestamp, rtph265depay->fu_marker);
1198 gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
1200 GstRtpH265Depay *rtph265depay;
1201 GstBuffer *outbuf = NULL;
1202 guint8 nal_unit_type;
1204 rtph265depay = GST_RTP_H265_DEPAY (depayload);
1206 /* flush remaining data on discont */
1207 if (GST_BUFFER_IS_DISCONT (rtp->buffer)) {
1208 gst_adapter_clear (rtph265depay->adapter);
1209 rtph265depay->wait_start = TRUE;
1210 rtph265depay->current_fu_type = 0;
1218 guint outsize, nalu_size;
1219 GstClockTime timestamp;
1221 guint8 nuh_layer_id, nuh_temporal_id_plus1;
1225 gboolean donl_present = FALSE;
1228 timestamp = GST_BUFFER_PTS (rtp->buffer);
1230 payload_len = gst_rtp_buffer_get_payload_len (rtp);
1231 payload = gst_rtp_buffer_get_payload (rtp);
1232 marker = gst_rtp_buffer_get_marker (rtp);
1234 GST_DEBUG_OBJECT (rtph265depay, "receiving %d bytes", payload_len);
1236 if (payload_len == 0)
1239 /* +---------------+---------------+
1240 * |0|1|2|3|4|5|6|7|0|1|2|3|4|5|6|7|
1241 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1242 * |F| Type | LayerId | TID |
1243 * +-------------+-----------------+
1248 nal_unit_type = (payload[0] >> 1) & 0x3f;
1249 nuh_layer_id = ((payload[0] & 0x01) << 5) | (payload[1] >> 3); /* should be zero for now but this could change in future HEVC extensions */
1250 nuh_temporal_id_plus1 = payload[1] & 0x03;
1252 /* At least two byte header with type */
1255 GST_DEBUG_OBJECT (rtph265depay,
1256 "NAL header nal_unit_type %d, nuh_temporal_id_plus1 %d", nal_unit_type,
1257 nuh_temporal_id_plus1);
1259 GST_FIXME_OBJECT (rtph265depay, "Assuming DONL field is not present");
1261 /* FIXME - assuming DONL field is not present for now */
1262 /*donl_present = (tx-mode == "MST") || (sprop-max-don-diff > 0); */
1264 /* If FU unit was being processed, but the current nal is of a different
1265 * type. Assume that the remote payloader is buggy (didn't set the end bit
1266 * when the FU ended) and send out what we gathered thusfar */
1267 if (G_UNLIKELY (rtph265depay->current_fu_type != 0 &&
1268 nal_unit_type != rtph265depay->current_fu_type))
1269 gst_rtp_h265_finish_fragmentation_unit (rtph265depay);
1271 switch (nal_unit_type) {
1274 GST_DEBUG_OBJECT (rtph265depay, "Processing aggregation packet");
1276 /* Aggregation packet (section 4.7) */
1278 /* An example of an AP packet containing two aggregation units
1279 without the DONL and DOND fields
1282 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
1283 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1285 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1286 | PayloadHdr (Type=48) | NALU 1 Size |
1287 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1289 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ NALU 1 Data |
1292 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1293 | . . . | NALU 2 Size | NALU 2 HDR |
1294 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1296 +-+-+-+-+-+-+-+-+ NALU 2 Data |
1298 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1299 | :...OPTIONAL RTP padding |
1300 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1304 payload += header_len;
1305 payload_len -= header_len;
1307 rtph265depay->wait_start = FALSE;
1311 goto not_implemented_donl_present;
1314 while (payload_len > 2) {
1316 nalu_size = (payload[0] << 8) | payload[1];
1318 /* dont include nalu_size */
1319 if (nalu_size > (payload_len - 2))
1320 nalu_size = payload_len - 2;
1322 outsize = nalu_size + sizeof (sync_bytes);
1323 outbuf = gst_buffer_new_and_alloc (outsize);
1325 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1326 if (rtph265depay->byte_stream) {
1327 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1329 GST_WRITE_UINT32_BE (map.data, nalu_size);
1332 /* strip NALU size */
1336 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1337 gst_buffer_unmap (outbuf, &map);
1339 gst_rtp_copy_video_meta (rtph265depay, outbuf, rtp->buffer);
1341 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1344 payload += nalu_size;
1345 payload_len -= nalu_size;
1351 GST_DEBUG_OBJECT (rtph265depay, "Processing Fragmentation Unit");
1353 /* Fragmentation units (FUs) Section 4.8 */
1355 /* The structure of a Fragmentation Unit (FU)
1357 * 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
1358 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1359 | PayloadHdr (Type=49) | FU header | DONL (cond) |
1360 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-|
1365 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1366 | :...OPTIONAL RTP padding |
1367 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1373 payload += header_len;
1374 payload_len -= header_len;
1376 /* processing FU header */
1377 S = (payload[0] & 0x80) == 0x80;
1378 E = (payload[0] & 0x40) == 0x40;
1380 GST_DEBUG_OBJECT (rtph265depay,
1381 "FU header with S %d, E %d, nal_unit_type %d", S, E,
1384 if (rtph265depay->wait_start && !S)
1389 goto not_implemented_donl_present;
1394 GST_DEBUG_OBJECT (rtph265depay, "Start of Fragmentation Unit");
1396 /* If a new FU unit started, while still processing an older one.
1397 * Assume that the remote payloader is buggy (doesn't set the end
1398 * bit) and send out what we've gathered thusfar */
1399 if (G_UNLIKELY (rtph265depay->current_fu_type != 0))
1400 gst_rtp_h265_finish_fragmentation_unit (rtph265depay);
1402 rtph265depay->current_fu_type = nal_unit_type;
1403 rtph265depay->fu_timestamp = timestamp;
1405 rtph265depay->wait_start = FALSE;
1407 /* reconstruct NAL header */
1409 ((payload[0] & 0x3f) << 9) | (nuh_layer_id << 3) |
1410 nuh_temporal_id_plus1;
1412 /* go back one byte so we can copy the payload + two bytes more in the front which
1413 * will be overwritten by the nal_header
1418 nalu_size = payload_len;
1419 outsize = nalu_size + sizeof (sync_bytes);
1420 outbuf = gst_buffer_new_and_alloc (outsize);
1422 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1423 if (rtph265depay->byte_stream) {
1424 GST_WRITE_UINT32_BE (map.data, 0x00000001);
1426 /* will be fixed up in finish_fragmentation_unit() */
1427 GST_WRITE_UINT32_BE (map.data, 0xffffffff);
1429 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1430 map.data[4] = nal_header >> 8;
1431 map.data[5] = nal_header & 0xff;
1432 gst_buffer_unmap (outbuf, &map);
1434 gst_rtp_copy_video_meta (rtph265depay, outbuf, rtp->buffer);
1436 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1438 /* and assemble in the adapter */
1439 gst_adapter_push (rtph265depay->adapter, outbuf);
1442 GST_DEBUG_OBJECT (rtph265depay,
1443 "Following part of Fragmentation Unit");
1445 /* strip off FU header byte */
1449 outsize = payload_len;
1450 outbuf = gst_buffer_new_and_alloc (outsize);
1451 gst_buffer_fill (outbuf, 0, payload, outsize);
1453 gst_rtp_copy_video_meta (rtph265depay, outbuf, rtp->buffer);
1455 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1457 /* and assemble in the adapter */
1458 gst_adapter_push (rtph265depay->adapter, outbuf);
1462 rtph265depay->fu_marker = marker;
1464 /* if NAL unit ends, flush the adapter */
1466 gst_rtp_h265_finish_fragmentation_unit (rtph265depay);
1467 GST_DEBUG_OBJECT (rtph265depay, "End of Fragmentation Unit");
1472 goto not_implemented; /* PACI packets Section 4.9 */
1475 rtph265depay->wait_start = FALSE;
1477 /* All other cases: Single NAL unit packet Section 4.6 */
1478 /* the entire payload is the output buffer */
1482 goto not_implemented_donl_present;
1485 nalu_size = payload_len;
1486 outsize = nalu_size + sizeof (sync_bytes);
1487 outbuf = gst_buffer_new_and_alloc (outsize);
1489 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1490 if (rtph265depay->byte_stream) {
1491 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1493 GST_WRITE_UINT32_BE (map.data, nalu_size);
1495 memcpy (map.data + 4, payload, nalu_size);
1496 gst_buffer_unmap (outbuf, &map);
1498 gst_rtp_copy_video_meta (rtph265depay, outbuf, rtp->buffer);
1500 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp, marker);
1511 GST_DEBUG_OBJECT (rtph265depay, "empty packet");
1516 GST_DEBUG_OBJECT (rtph265depay, "waiting for start");
1520 not_implemented_donl_present:
1522 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1523 (NULL), ("DONL field present not supported yet"));
1529 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1530 (NULL), ("NAL unit type %d not supported yet", nal_unit_type));
1536 gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay, GstEvent * event)
1538 GstRtpH265Depay *rtph265depay;
1540 rtph265depay = GST_RTP_H265_DEPAY (depay);
1542 switch (GST_EVENT_TYPE (event)) {
1543 case GST_EVENT_FLUSH_STOP:
1544 gst_rtp_h265_depay_reset (rtph265depay, FALSE);
1551 GST_RTP_BASE_DEPAYLOAD_CLASS (parent_class)->handle_event (depay, event);
1554 static GstStateChangeReturn
1555 gst_rtp_h265_depay_change_state (GstElement * element,
1556 GstStateChange transition)
1558 GstRtpH265Depay *rtph265depay;
1559 GstStateChangeReturn ret;
1561 rtph265depay = GST_RTP_H265_DEPAY (element);
1563 switch (transition) {
1564 case GST_STATE_CHANGE_NULL_TO_READY:
1566 case GST_STATE_CHANGE_READY_TO_PAUSED:
1567 gst_rtp_h265_depay_reset (rtph265depay, TRUE);
1573 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1575 switch (transition) {
1576 case GST_STATE_CHANGE_PAUSED_TO_READY:
1577 gst_rtp_h265_depay_reset (rtph265depay, TRUE);
1579 case GST_STATE_CHANGE_READY_TO_NULL:
1588 gst_rtp_h265_depay_plugin_init (GstPlugin * plugin)
1590 GST_DEBUG_CATEGORY_INIT (rtph265depay_debug, "rtph265depay", 0,
1591 "H265 Video RTP Depayloader");
1593 return gst_element_register (plugin, "rtph265depay",
1594 GST_RANK_SECONDARY, GST_TYPE_RTP_H265_DEPAY);