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_static_pad_template (gstelement_class,
128 &gst_rtp_h265_depay_src_template);
129 gst_element_class_add_static_pad_template (gstelement_class,
130 &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 (RFC 7798)",
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 = NULL;
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, gboolean hard)
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);
175 if (rtph265depay->allocator != NULL) {
176 gst_object_unref (rtph265depay->allocator);
177 rtph265depay->allocator = NULL;
179 gst_allocation_params_init (&rtph265depay->params);
184 gst_rtp_h265_depay_finalize (GObject * object)
186 GstRtpH265Depay *rtph265depay;
188 rtph265depay = GST_RTP_H265_DEPAY (object);
190 if (rtph265depay->codec_data)
191 gst_buffer_unref (rtph265depay->codec_data);
193 g_free (rtph265depay->stream_format);
195 g_object_unref (rtph265depay->adapter);
196 g_object_unref (rtph265depay->picture_adapter);
198 g_ptr_array_free (rtph265depay->vps, TRUE);
199 g_ptr_array_free (rtph265depay->sps, TRUE);
200 g_ptr_array_free (rtph265depay->pps, TRUE);
202 G_OBJECT_CLASS (parent_class)->finalize (object);
206 gst_rtp_h265_depay_negotiate (GstRtpH265Depay * rtph265depay)
209 gint byte_stream = -1;
213 gst_pad_get_allowed_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay));
215 GST_DEBUG_OBJECT (rtph265depay, "allowed caps: %" GST_PTR_FORMAT, caps);
218 if (gst_caps_get_size (caps) > 0) {
219 GstStructure *s = gst_caps_get_structure (caps, 0);
220 const gchar *str = NULL;
222 if ((str = gst_structure_get_string (s, "stream-format"))) {
223 g_free (rtph265depay->stream_format);
224 rtph265depay->stream_format = g_strdup (str);
226 if (strcmp (str, "hev1") == 0) {
228 } else if (strcmp (str, "hvc1") == 0) {
230 } else if (strcmp (str, "byte-stream") == 0) {
233 GST_DEBUG_OBJECT (rtph265depay, "unknown stream-format: %s", str);
237 if ((str = gst_structure_get_string (s, "alignment"))) {
238 if (strcmp (str, "au") == 0) {
240 } else if (strcmp (str, "nal") == 0) {
243 GST_DEBUG_OBJECT (rtph265depay, "unknown alignment: %s", str);
247 gst_caps_unref (caps);
250 if (byte_stream != -1) {
251 GST_DEBUG_OBJECT (rtph265depay, "downstream requires byte-stream %d",
253 rtph265depay->byte_stream = byte_stream;
255 GST_DEBUG_OBJECT (rtph265depay, "defaulting to byte-stream %d",
256 DEFAULT_BYTE_STREAM);
257 g_free (rtph265depay->stream_format);
258 rtph265depay->stream_format = g_strdup ("byte-stream");
259 rtph265depay->byte_stream = DEFAULT_BYTE_STREAM;
262 GST_DEBUG_OBJECT (rtph265depay, "downstream requires merge %d", merge);
263 rtph265depay->merge = merge;
265 GST_DEBUG_OBJECT (rtph265depay, "defaulting to merge %d",
266 DEFAULT_ACCESS_UNIT);
267 rtph265depay->merge = DEFAULT_ACCESS_UNIT;
272 parse_sps (GstMapInfo * map, guint32 * sps_id)
273 { /* To parse seq_parameter_set_id */
274 GstBitReader br = GST_BIT_READER_INIT (map->data + 15,
280 if (!gst_rtp_read_golomb (&br, sps_id))
287 parse_pps (GstMapInfo * map, guint32 * sps_id, guint32 * pps_id)
288 { /* To parse picture_parameter_set_id */
289 GstBitReader br = GST_BIT_READER_INIT (map->data + 2,
295 if (!gst_rtp_read_golomb (&br, pps_id))
297 if (!gst_rtp_read_golomb (&br, sps_id))
304 gst_rtp_h265_depay_set_output_caps (GstRtpH265Depay * rtph265depay,
307 GstAllocationParams params;
308 GstAllocator *allocator = NULL;
312 gst_allocation_params_init (¶ms);
314 srcpad = GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay);
316 res = gst_pad_set_caps (srcpad, caps);
321 query = gst_query_new_allocation (caps, TRUE);
322 if (!gst_pad_peer_query (srcpad, query)) {
323 GST_DEBUG_OBJECT (rtph265depay, "downstream ALLOCATION query failed");
326 if (gst_query_get_n_allocation_params (query) > 0) {
327 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
330 gst_query_unref (query);
333 if (rtph265depay->allocator)
334 gst_object_unref (rtph265depay->allocator);
336 rtph265depay->allocator = allocator;
337 rtph265depay->params = params;
343 gst_rtp_h265_set_src_caps (GstRtpH265Depay * rtph265depay)
345 gboolean res, update_caps;
350 if (!rtph265depay->byte_stream &&
351 (!rtph265depay->new_codec_data ||
352 rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0
353 || rtph265depay->pps->len == 0))
356 srccaps = gst_caps_new_simple ("video/x-h265",
357 "stream-format", G_TYPE_STRING, rtph265depay->stream_format,
358 "alignment", G_TYPE_STRING, rtph265depay->merge ? "au" : "nal", NULL);
360 if (!rtph265depay->byte_stream) {
361 GstBuffer *codec_data;
364 guint num_vps = rtph265depay->vps->len;
365 guint num_sps = rtph265depay->sps->len;
366 guint num_pps = rtph265depay->pps->len;
367 GstMapInfo map, nalmap;
370 guint8 num_arrays = 0;
375 guint32 max_sub_layers_minus1, temporal_id_nesting_flag, chroma_format_idc,
376 bit_depth_luma_minus8, bit_depth_chroma_minus8,
377 min_spatial_segmentation_idc;
379 /* Fixme: Current implementation is not embedding SEI in codec_data */
384 /* start with 23 bytes header */
387 num_arrays = (num_vps > 0) + (num_sps > 0) + (num_pps > 0);
390 /* add size of vps, sps & pps */
391 for (i = 0; i < num_vps; i++)
392 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
393 for (i = 0; i < num_sps; i++)
394 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
395 for (i = 0; i < num_pps; i++)
396 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
398 GST_DEBUG_OBJECT (rtph265depay,
399 "constructing codec_data: num_vps =%d num_sps=%d, num_pps=%d", num_vps,
402 codec_data = gst_buffer_new_and_alloc (len);
403 gst_buffer_map (codec_data, &map, GST_MAP_READWRITE);
406 memset (data, 0, map.size);
408 /* Parsing sps to get the info required further on */
410 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
413 max_sub_layers_minus1 = ((nalmap.data[2]) >> 1) & 0x07;
414 temporal_id_nesting_flag = nalmap.data[2] & 0x01;
416 gst_bit_reader_init (&br, nalmap.data + 15, nalmap.size - 15);
418 gst_rtp_read_golomb (&br, &tmp); /* sps_seq_parameter_set_id */
419 gst_rtp_read_golomb (&br, &chroma_format_idc); /* chroma_format_idc */
421 if (chroma_format_idc == 3)
423 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* separate_colour_plane_flag */
425 gst_rtp_read_golomb (&br, &tmp); /* pic_width_in_luma_samples */
426 gst_rtp_read_golomb (&br, &tmp); /* pic_height_in_luma_samples */
428 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* conformance_window_flag */
430 gst_rtp_read_golomb (&br, &tmp); /* conf_win_left_offset */
431 gst_rtp_read_golomb (&br, &tmp); /* conf_win_right_offset */
432 gst_rtp_read_golomb (&br, &tmp); /* conf_win_top_offset */
433 gst_rtp_read_golomb (&br, &tmp); /* conf_win_bottom_offset */
436 gst_rtp_read_golomb (&br, &bit_depth_luma_minus8); /* bit_depth_luma_minus8 */
437 gst_rtp_read_golomb (&br, &bit_depth_chroma_minus8); /* bit_depth_chroma_minus8 */
439 GST_DEBUG_OBJECT (rtph265depay,
440 "Ignoring min_spatial_segmentation for now (assuming zero)");
442 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 */
478 0x00 | ((max_sub_layers_minus1 +
479 1) << 3) | (temporal_id_nesting_flag << 2) | (nl - 1);
480 GST_WRITE_UINT8 (data + 22, num_arrays); /* numOfArrays */
486 /* array_completeness | reserved_zero bit | nal_unit_type */
487 data[0] = 0x00 | 0x20;
490 GST_WRITE_UINT16_BE (data, num_vps);
493 for (i = 0; i < num_vps; i++) {
495 gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
496 GST_WRITE_UINT16_BE (data, nal_size);
497 gst_buffer_extract (g_ptr_array_index (rtph265depay->vps, i), 0,
499 data += 2 + nal_size;
500 GST_DEBUG_OBJECT (rtph265depay, "Copied VPS %d of length %u", i,
507 /* array_completeness | reserved_zero bit | nal_unit_type */
508 data[0] = 0x00 | 0x21;
511 GST_WRITE_UINT16_BE (data, num_sps);
514 for (i = 0; i < num_sps; i++) {
516 gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
517 GST_WRITE_UINT16_BE (data, nal_size);
518 gst_buffer_extract (g_ptr_array_index (rtph265depay->sps, i), 0,
520 data += 2 + nal_size;
521 GST_DEBUG_OBJECT (rtph265depay, "Copied SPS %d of length %u", i,
528 /* array_completeness | reserved_zero bit | nal_unit_type */
529 data[0] = 0x00 | 0x22;
532 GST_WRITE_UINT16_BE (data, num_pps);
535 for (i = 0; i < num_pps; i++) {
537 gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
538 GST_WRITE_UINT16_BE (data, nal_size);
539 gst_buffer_extract (g_ptr_array_index (rtph265depay->pps, i), 0,
541 data += 2 + nal_size;
542 GST_DEBUG_OBJECT (rtph265depay, "Copied PPS %d of length %u", i,
547 new_size = data - map.data;
548 gst_buffer_unmap (codec_data, &map);
549 gst_buffer_set_size (codec_data, new_size);
551 gst_caps_set_simple (srccaps,
552 "codec_data", GST_TYPE_BUFFER, codec_data, NULL);
553 gst_buffer_unref (codec_data);
556 srcpad = GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay);
558 old_caps = gst_pad_get_current_caps (srcpad);
559 if (old_caps != NULL) {
561 /* Only update the caps if they are not equal. For
562 * AVC we don't update caps if only the codec_data
563 * changes. This is the same behaviour as in h264parse
564 * and gstrtph264depay
566 if (rtph265depay->byte_stream) {
567 update_caps = !gst_caps_is_equal (srccaps, old_caps);
569 GstCaps *tmp_caps = gst_caps_copy (srccaps);
570 GstStructure *old_s, *tmp_s;
572 old_s = gst_caps_get_structure (old_caps, 0);
573 tmp_s = gst_caps_get_structure (tmp_caps, 0);
574 if (gst_structure_has_field (old_s, "codec_data"))
575 gst_structure_set_value (tmp_s, "codec_data",
576 gst_structure_get_value (old_s, "codec_data"));
578 update_caps = !gst_caps_is_equal (old_caps, tmp_caps);
579 gst_caps_unref (tmp_caps);
581 gst_caps_unref (old_caps);
587 res = gst_rtp_h265_depay_set_output_caps (rtph265depay, srccaps);
592 gst_caps_unref (srccaps);
594 /* Insert SPS and PPS into the stream on next opportunity */
595 if (rtph265depay->sps->len > 0 || rtph265depay->pps->len > 0) {
597 GstBuffer *codec_data;
602 for (i = 0; i < rtph265depay->sps->len; i++) {
603 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
606 for (i = 0; i < rtph265depay->pps->len; i++) {
607 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
610 codec_data = gst_buffer_new_and_alloc (len);
611 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
614 for (i = 0; i < rtph265depay->sps->len; i++) {
615 GstBuffer *sps_buf = g_ptr_array_index (rtph265depay->sps, i);
616 guint sps_size = gst_buffer_get_size (sps_buf);
618 if (rtph265depay->byte_stream)
619 memcpy (data, sync_bytes, sizeof (sync_bytes));
621 GST_WRITE_UINT32_BE (data, sps_size);
622 gst_buffer_extract (sps_buf, 0, data + 4, -1);
623 data += 4 + sps_size;
626 for (i = 0; i < rtph265depay->pps->len; i++) {
627 GstBuffer *pps_buf = g_ptr_array_index (rtph265depay->pps, i);
628 guint pps_size = gst_buffer_get_size (pps_buf);
630 if (rtph265depay->byte_stream)
631 memcpy (data, sync_bytes, sizeof (sync_bytes));
633 GST_WRITE_UINT32_BE (data, pps_size);
634 gst_buffer_extract (pps_buf, 0, data + 4, -1);
635 data += 4 + pps_size;
638 gst_buffer_unmap (codec_data, &map);
639 if (rtph265depay->codec_data)
640 gst_buffer_unref (rtph265depay->codec_data);
641 rtph265depay->codec_data = codec_data;
645 rtph265depay->new_codec_data = FALSE;
651 gst_rtp_h265_add_vps_sps_pps (GstElement * rtph265, GPtrArray * vps_array,
652 GPtrArray * sps_array, GPtrArray * pps_array, GstBuffer * nal)
658 gst_buffer_map (nal, &map, GST_MAP_READ);
660 type = (map.data[0] >> 1) & 0x3f;
662 if (type == GST_H265_VPS_NUT) {
663 guint32 vps_id = (map.data[2] >> 4) & 0x0f;
665 for (i = 0; i < vps_array->len; i++) {
666 GstBuffer *vps = g_ptr_array_index (vps_array, i);
670 gst_buffer_map (vps, &vpsmap, GST_MAP_READ);
671 tmp_vps_id = (vpsmap.data[2] >> 4) & 0x0f;
673 if (vps_id == tmp_vps_id) {
674 if (map.size == vpsmap.size &&
675 memcmp (map.data, vpsmap.data, vpsmap.size) == 0) {
676 GST_LOG_OBJECT (rtph265, "Unchanged VPS %u, not updating", vps_id);
677 gst_buffer_unmap (vps, &vpsmap);
680 gst_buffer_unmap (vps, &vpsmap);
681 g_ptr_array_remove_index_fast (vps_array, i);
682 g_ptr_array_add (vps_array, nal);
683 GST_LOG_OBJECT (rtph265, "Modified VPS %u, replacing", vps_id);
687 gst_buffer_unmap (vps, &vpsmap);
689 GST_LOG_OBJECT (rtph265, "Adding new VPS %u", vps_id);
690 g_ptr_array_add (vps_array, nal);
691 } else if (type == GST_H265_SPS_NUT) {
694 if (!parse_sps (&map, &sps_id)) {
695 GST_WARNING_OBJECT (rtph265, "Invalid SPS,"
696 " can't parse seq_parameter_set_id");
700 for (i = 0; i < sps_array->len; i++) {
701 GstBuffer *sps = g_ptr_array_index (sps_array, i);
705 gst_buffer_map (sps, &spsmap, GST_MAP_READ);
706 parse_sps (&spsmap, &tmp_sps_id);
708 if (sps_id == tmp_sps_id) {
709 if (map.size == spsmap.size &&
710 memcmp (map.data, spsmap.data, spsmap.size) == 0) {
711 GST_LOG_OBJECT (rtph265, "Unchanged SPS %u, not updating", sps_id);
712 gst_buffer_unmap (sps, &spsmap);
715 gst_buffer_unmap (sps, &spsmap);
716 g_ptr_array_remove_index_fast (sps_array, i);
717 g_ptr_array_add (sps_array, nal);
718 GST_LOG_OBJECT (rtph265, "Modified SPS %u, replacing", sps_id);
722 gst_buffer_unmap (sps, &spsmap);
724 GST_LOG_OBJECT (rtph265, "Adding new SPS %u", sps_id);
725 g_ptr_array_add (sps_array, nal);
726 } else if (type == GST_H265_PPS_NUT) {
730 if (!parse_pps (&map, &sps_id, &pps_id)) {
731 GST_WARNING_OBJECT (rtph265, "Invalid PPS,"
732 " can't parse seq_parameter_set_id or pic_parameter_set_id");
736 for (i = 0; i < pps_array->len; i++) {
737 GstBuffer *pps = g_ptr_array_index (pps_array, i);
743 gst_buffer_map (pps, &ppsmap, GST_MAP_READ);
744 parse_pps (&ppsmap, &tmp_sps_id, &tmp_pps_id);
746 if (pps_id == tmp_pps_id) {
747 if (map.size == ppsmap.size &&
748 memcmp (map.data, ppsmap.data, ppsmap.size) == 0) {
749 GST_LOG_OBJECT (rtph265, "Unchanged PPS %u:%u, not updating", sps_id,
751 gst_buffer_unmap (pps, &ppsmap);
754 gst_buffer_unmap (pps, &ppsmap);
755 g_ptr_array_remove_index_fast (pps_array, i);
756 g_ptr_array_add (pps_array, nal);
757 GST_LOG_OBJECT (rtph265, "Modified PPS %u:%u, replacing",
762 gst_buffer_unmap (pps, &ppsmap);
764 GST_LOG_OBJECT (rtph265, "Adding new PPS %u:%i", sps_id, pps_id);
765 g_ptr_array_add (pps_array, nal);
771 gst_buffer_unmap (nal, &map);
776 gst_buffer_unmap (nal, &map);
777 gst_buffer_unref (nal);
784 gst_rtp_h265_depay_add_vps_sps_pps (GstRtpH265Depay * rtph265depay,
787 if (gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265depay),
788 rtph265depay->vps, rtph265depay->sps, rtph265depay->pps, nal))
789 rtph265depay->new_codec_data = TRUE;
793 gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
796 GstStructure *structure = gst_caps_get_structure (caps, 0);
797 GstRtpH265Depay *rtph265depay;
805 rtph265depay = GST_RTP_H265_DEPAY (depayload);
807 if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
809 depayload->clock_rate = clock_rate;
811 /* Base64 encoded, comma separated config NALs */
812 vps = gst_structure_get_string (structure, "sprop-vps");
813 sps = gst_structure_get_string (structure, "sprop-sps");
814 pps = gst_structure_get_string (structure, "sprop-pps");
815 if (vps == NULL || sps == NULL || pps == NULL) {
818 ps = g_strdup_printf ("%s,%s,%s", vps, sps, pps);
821 /* negotiate with downstream w.r.t. output format and alignment */
822 gst_rtp_h265_depay_negotiate (rtph265depay);
824 if (rtph265depay->byte_stream && ps != NULL) {
825 /* for bytestream we only need the parameter sets but we don't error out
826 * when they are not there, we assume they are in the stream. */
828 GstBuffer *codec_data;
832 params = g_strsplit (ps, ",", 0);
834 /* count total number of bytes in base64. Also include the sync bytes in
835 * front of the params. */
837 for (i = 0; params[i]; i++) {
838 len += strlen (params[i]);
839 len += sizeof (sync_bytes);
841 /* we seriously overshoot the length, but it's fine. */
842 codec_data = gst_buffer_new_and_alloc (len);
844 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
847 for (i = 0; params[i]; i++) {
851 GST_DEBUG_OBJECT (depayload, "decoding param %d (%s)", i, params[i]);
852 memcpy (ptr, sync_bytes, sizeof (sync_bytes));
853 ptr += sizeof (sync_bytes);
855 g_base64_decode_step (params[i], strlen (params[i]), ptr, &state,
857 GST_DEBUG_OBJECT (depayload, "decoded %d bytes", len);
858 total += len + sizeof (sync_bytes);
861 gst_buffer_unmap (codec_data, &map);
862 gst_buffer_resize (codec_data, 0, total);
865 /* keep the codec_data, we need to send it as the first buffer. We cannot
866 * push it in the adapter because the adapter might be flushed on discont.
868 if (rtph265depay->codec_data)
869 gst_buffer_unref (rtph265depay->codec_data);
870 rtph265depay->codec_data = codec_data;
871 } else if (!rtph265depay->byte_stream) {
876 goto incomplete_caps;
878 params = g_strsplit (ps, ",", 0);
880 GST_DEBUG_OBJECT (depayload, "we have %d params", g_strv_length (params));
882 /* start with 23 bytes header */
883 for (i = 0; params[i]; i++) {
890 nal_len = strlen (params[i]);
892 GST_WARNING_OBJECT (depayload, "empty param '%s' (#%d)", params[i], i);
895 nal = gst_buffer_new_and_alloc (nal_len);
896 gst_buffer_map (nal, &nalmap, GST_MAP_READWRITE);
899 g_base64_decode_step (params[i], nal_len, nalmap.data, &state, &save);
901 GST_DEBUG_OBJECT (depayload, "adding param %d as %s", i,
902 (((nalmap.data[0] >> 1) & 0x3f) ==
903 32) ? "VPS" : (((nalmap.data[0] >> 1) & 0x3f) ==
904 33) ? "SPS" : "PPS");
906 gst_buffer_unmap (nal, &nalmap);
907 gst_buffer_set_size (nal, nal_len);
909 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay, nal);
913 if (rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0 ||
914 rtph265depay->pps->len == 0) {
915 goto incomplete_caps;
921 return gst_rtp_h265_set_src_caps (rtph265depay);
926 GST_DEBUG_OBJECT (depayload, "we have incomplete caps,"
927 " doing setcaps later");
934 gst_rtp_h265_depay_allocate_output_buffer (GstRtpH265Depay * depay, gsize size)
936 GstBuffer *buffer = NULL;
938 g_return_val_if_fail (size > 0, NULL);
940 GST_LOG_OBJECT (depay, "want output buffer of %u bytes", (guint) size);
942 buffer = gst_buffer_new_allocate (depay->allocator, size, &depay->params);
943 if (buffer == NULL) {
944 GST_INFO_OBJECT (depay, "couldn't allocate output buffer");
945 buffer = gst_buffer_new_allocate (NULL, size, NULL);
952 gst_rtp_h265_complete_au (GstRtpH265Depay * rtph265depay,
953 GstClockTime * out_timestamp, gboolean * out_keyframe)
958 guint outsize, offset = 0;
959 gint b, n_bufs, m, n_mem;
961 /* we had a picture in the adapter and we completed it */
962 GST_DEBUG_OBJECT (rtph265depay, "taking completed AU");
963 outsize = gst_adapter_available (rtph265depay->picture_adapter);
965 outbuf = gst_rtp_h265_depay_allocate_output_buffer (rtph265depay, outsize);
970 if (!gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE))
973 list = gst_adapter_take_buffer_list (rtph265depay->picture_adapter, outsize);
975 n_bufs = gst_buffer_list_length (list);
976 for (b = 0; b < n_bufs; ++b) {
977 GstBuffer *buf = gst_buffer_list_get (list, b);
979 n_mem = gst_buffer_n_memory (buf);
980 for (m = 0; m < n_mem; ++m) {
981 GstMemory *mem = gst_buffer_peek_memory (buf, m);
982 gsize mem_size = gst_memory_get_sizes (mem, NULL, NULL);
985 if (gst_memory_map (mem, &mem_map, GST_MAP_READ)) {
986 memcpy (outmap.data + offset, mem_map.data, mem_size);
987 gst_memory_unmap (mem, &mem_map);
989 memset (outmap.data + offset, 0, mem_size);
994 gst_rtp_copy_video_meta (rtph265depay, outbuf, buf);
996 gst_buffer_list_unref (list);
997 gst_buffer_unmap (outbuf, &outmap);
999 *out_timestamp = rtph265depay->last_ts;
1000 *out_keyframe = rtph265depay->last_keyframe;
1002 rtph265depay->last_keyframe = FALSE;
1003 rtph265depay->picture_start = FALSE;
1008 /* VPS/SPS/PPS/RADL/TSA/RASL/IDR/CRA is considered key, all others DELTA;
1009 * so downstream waiting for keyframe can pick up at VPS/SPS/PPS/IDR */
1011 #define NAL_TYPE_IS_PARAMETER_SET(nt) ( ((nt) == GST_H265_VPS_NUT)\
1012 || ((nt) == GST_H265_SPS_NUT)\
1013 || ((nt) == GST_H265_PPS_NUT) )
1015 #define NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt) ( ((nt) == GST_H265_NAL_SLICE_TRAIL_N)\
1016 || ((nt) == GST_H265_NAL_SLICE_TRAIL_R)\
1017 || ((nt) == GST_H265_NAL_SLICE_TSA_N)\
1018 || ((nt) == GST_H265_NAL_SLICE_TSA_R)\
1019 || ((nt) == GST_H265_NAL_SLICE_STSA_N)\
1020 || ((nt) == GST_H265_NAL_SLICE_STSA_R)\
1021 || ((nt) == GST_H265_NAL_SLICE_RASL_N)\
1022 || ((nt) == GST_H265_NAL_SLICE_RASL_R)\
1023 || ((nt) == GST_H265_NAL_SLICE_BLA_W_LP)\
1024 || ((nt) == GST_H265_NAL_SLICE_BLA_W_RADL)\
1025 || ((nt) == GST_H265_NAL_SLICE_BLA_N_LP)\
1026 || ((nt) == GST_H265_NAL_SLICE_IDR_W_RADL)\
1027 || ((nt) == GST_H265_NAL_SLICE_IDR_N_LP)\
1028 || ((nt) == GST_H265_NAL_SLICE_CRA_NUT) )
1030 /* Intra random access point */
1031 #define NAL_TYPE_IS_IRAP(nt) (((nt) == GST_H265_NAL_SLICE_BLA_W_LP) \
1032 || ((nt) == GST_H265_NAL_SLICE_BLA_W_RADL) \
1033 || ((nt) == GST_H265_NAL_SLICE_BLA_N_LP) \
1034 || ((nt) == GST_H265_NAL_SLICE_IDR_W_RADL) \
1035 || ((nt) == GST_H265_NAL_SLICE_IDR_N_LP) \
1036 || ((nt) == GST_H265_NAL_SLICE_CRA_NUT))
1038 #define NAL_TYPE_IS_KEY(nt) (NAL_TYPE_IS_PARAMETER_SET(nt) || NAL_TYPE_IS_IRAP(nt))
1041 gst_rtp_h265_depay_handle_nal (GstRtpH265Depay * rtph265depay, GstBuffer * nal,
1042 GstClockTime in_timestamp, gboolean marker)
1044 GstRTPBaseDepayload *depayload = GST_RTP_BASE_DEPAYLOAD (rtph265depay);
1047 GstBuffer *outbuf = NULL;
1048 GstClockTime out_timestamp;
1049 gboolean keyframe, out_keyframe;
1051 gst_buffer_map (nal, &map, GST_MAP_READ);
1052 if (G_UNLIKELY (map.size < 5))
1055 nal_type = (map.data[4] >> 1) & 0x3f;
1056 GST_DEBUG_OBJECT (rtph265depay, "handle NAL type %d (RTP marker bit %d)",
1059 keyframe = NAL_TYPE_IS_KEY (nal_type);
1061 out_keyframe = keyframe;
1062 out_timestamp = in_timestamp;
1064 if (!rtph265depay->byte_stream) {
1065 if (NAL_TYPE_IS_PARAMETER_SET (nal_type)) {
1066 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay,
1067 gst_buffer_copy_region (nal, GST_BUFFER_COPY_ALL,
1068 4, gst_buffer_get_size (nal) - 4));
1069 gst_buffer_unmap (nal, &map);
1070 gst_buffer_unref (nal);
1072 } else if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0) {
1073 /* Down push down any buffer in non-bytestream mode if the SPS/PPS haven't
1076 gst_pad_push_event (GST_RTP_BASE_DEPAYLOAD_SINKPAD (depayload),
1077 gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
1078 gst_structure_new ("GstForceKeyUnit",
1079 "all-headers", G_TYPE_BOOLEAN, TRUE, NULL)));
1080 gst_buffer_unmap (nal, &map);
1081 gst_buffer_unref (nal);
1085 if (rtph265depay->new_codec_data &&
1086 rtph265depay->sps->len > 0 && rtph265depay->pps->len > 0)
1087 gst_rtp_h265_set_src_caps (rtph265depay);
1090 if (rtph265depay->merge) {
1091 gboolean start = FALSE, complete = FALSE;
1093 /* marker bit isn't mandatory so in the following code we try to detect
1094 * an AU boundary (see H.265 spec section 7.4.2.4.4) */
1096 if (NAL_TYPE_IS_CODED_SLICE_SEGMENT (nal_type)) {
1097 /* 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 */
1099 if (((map.data[6] >> 7) & 0x01) == 1) {
1102 } else if ((nal_type >= 32 && nal_type <= 35)
1103 || nal_type == 39 || (nal_type >= 41 && nal_type <= 44)
1104 || (nal_type >= 48 && nal_type <= 55)) {
1105 /* VPS, SPS, PPS, SEI, ... terminate an access unit */
1108 GST_DEBUG_OBJECT (depayload, "start %d, complete %d", start, complete);
1110 if (complete && rtph265depay->picture_start)
1111 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1114 /* add to adapter */
1115 gst_buffer_unmap (nal, &map);
1117 GST_DEBUG_OBJECT (depayload, "adding NAL to picture adapter");
1118 gst_adapter_push (rtph265depay->picture_adapter, nal);
1119 rtph265depay->last_ts = in_timestamp;
1120 rtph265depay->last_keyframe |= keyframe;
1121 rtph265depay->picture_start |= start;
1124 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1127 /* no merge, output is input nal */
1128 GST_DEBUG_OBJECT (depayload, "using NAL as output");
1130 gst_buffer_unmap (nal, &map);
1134 /* prepend codec_data */
1135 if (rtph265depay->codec_data) {
1136 GST_DEBUG_OBJECT (depayload, "prepending codec_data");
1137 gst_rtp_copy_video_meta (rtph265depay, rtph265depay->codec_data, outbuf);
1138 outbuf = gst_buffer_append (rtph265depay->codec_data, outbuf);
1139 rtph265depay->codec_data = NULL;
1140 out_keyframe = TRUE;
1142 outbuf = gst_buffer_make_writable (outbuf);
1144 gst_rtp_drop_non_video_meta (rtph265depay, outbuf);
1146 GST_BUFFER_PTS (outbuf) = out_timestamp;
1149 GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1151 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1153 gst_rtp_base_depayload_push (depayload, outbuf);
1161 GST_WARNING_OBJECT (depayload, "dropping short NAL");
1162 gst_buffer_unmap (nal, &map);
1163 gst_buffer_unref (nal);
1169 gst_rtp_h265_finish_fragmentation_unit (GstRtpH265Depay * rtph265depay)
1175 outsize = gst_adapter_available (rtph265depay->adapter);
1176 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
1178 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1179 GST_DEBUG_OBJECT (rtph265depay, "output %d bytes", outsize);
1181 if (rtph265depay->byte_stream) {
1182 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1184 goto not_implemented;
1186 gst_buffer_unmap (outbuf, &map);
1188 rtph265depay->current_fu_type = 0;
1190 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf,
1191 rtph265depay->fu_timestamp, rtph265depay->fu_marker);
1197 GST_ERROR_OBJECT (rtph265depay,
1198 ("Only bytestream format is currently supported."));
1199 gst_buffer_unmap (outbuf, &map);
1205 gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
1207 GstRtpH265Depay *rtph265depay;
1208 GstBuffer *outbuf = NULL;
1209 guint8 nal_unit_type;
1211 rtph265depay = GST_RTP_H265_DEPAY (depayload);
1213 /* flush remaining data on discont */
1214 if (GST_BUFFER_IS_DISCONT (rtp->buffer)) {
1215 gst_adapter_clear (rtph265depay->adapter);
1216 rtph265depay->wait_start = TRUE;
1217 rtph265depay->current_fu_type = 0;
1225 guint outsize, nalu_size;
1226 GstClockTime timestamp;
1228 guint8 nuh_layer_id, nuh_temporal_id_plus1;
1232 gboolean donl_present = FALSE;
1235 timestamp = GST_BUFFER_PTS (rtp->buffer);
1237 payload_len = gst_rtp_buffer_get_payload_len (rtp);
1238 payload = gst_rtp_buffer_get_payload (rtp);
1239 marker = gst_rtp_buffer_get_marker (rtp);
1241 GST_DEBUG_OBJECT (rtph265depay, "receiving %d bytes", payload_len);
1243 if (payload_len == 0)
1246 /* +---------------+---------------+
1247 * |0|1|2|3|4|5|6|7|0|1|2|3|4|5|6|7|
1248 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1249 * |F| Type | LayerId | TID |
1250 * +-------------+-----------------+
1255 nal_unit_type = (payload[0] >> 1) & 0x3f;
1256 nuh_layer_id = ((payload[0] & 0x01) << 5) | (payload[1] >> 3); /* should be zero for now but this could change in future HEVC extensions */
1257 nuh_temporal_id_plus1 = payload[1] & 0x03;
1259 /* At least two byte header with type */
1262 GST_DEBUG_OBJECT (rtph265depay,
1263 "NAL header nal_unit_type %d, nuh_temporal_id_plus1 %d", nal_unit_type,
1264 nuh_temporal_id_plus1);
1266 GST_FIXME_OBJECT (rtph265depay, "Assuming DONL field is not present");
1268 /* FIXME - assuming DONL field is not present for now */
1269 /*donl_present = (tx-mode == "MST") || (sprop-max-don-diff > 0); */
1271 /* If FU unit was being processed, but the current nal is of a different
1272 * type. Assume that the remote payloader is buggy (didn't set the end bit
1273 * when the FU ended) and send out what we gathered thusfar */
1274 if (G_UNLIKELY (rtph265depay->current_fu_type != 0 &&
1275 nal_unit_type != rtph265depay->current_fu_type))
1276 gst_rtp_h265_finish_fragmentation_unit (rtph265depay);
1278 switch (nal_unit_type) {
1281 GST_DEBUG_OBJECT (rtph265depay, "Processing aggregation packet");
1283 /* Aggregation packet (section 4.7) */
1285 /* An example of an AP packet containing two aggregation units
1286 without the DONL and DOND fields
1289 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
1290 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1292 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1293 | PayloadHdr (Type=48) | NALU 1 Size |
1294 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1296 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ NALU 1 Data |
1299 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1300 | . . . | NALU 2 Size | NALU 2 HDR |
1301 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1303 +-+-+-+-+-+-+-+-+ NALU 2 Data |
1305 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1306 | :...OPTIONAL RTP padding |
1307 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1311 payload += header_len;
1312 payload_len -= header_len;
1314 rtph265depay->wait_start = FALSE;
1318 goto not_implemented_donl_present;
1321 while (payload_len > 2) {
1323 nalu_size = (payload[0] << 8) | payload[1];
1325 /* dont include nalu_size */
1326 if (nalu_size > (payload_len - 2))
1327 nalu_size = payload_len - 2;
1329 outsize = nalu_size + sizeof (sync_bytes);
1330 outbuf = gst_buffer_new_and_alloc (outsize);
1332 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1333 if (rtph265depay->byte_stream) {
1334 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1336 gst_buffer_unmap (outbuf, &map);
1337 goto not_implemented;
1340 /* strip NALU size */
1344 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1345 gst_buffer_unmap (outbuf, &map);
1347 gst_rtp_copy_video_meta (rtph265depay, outbuf, rtp->buffer);
1349 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1352 payload += nalu_size;
1353 payload_len -= nalu_size;
1359 GST_DEBUG_OBJECT (rtph265depay, "Processing Fragmentation Unit");
1361 /* Fragmentation units (FUs) Section 4.8 */
1363 /* The structure of a Fragmentation Unit (FU)
1365 * 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
1366 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1367 | PayloadHdr (Type=49) | FU header | DONL (cond) |
1368 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-|
1373 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1374 | :...OPTIONAL RTP padding |
1375 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1381 payload += header_len;
1382 payload_len -= header_len;
1384 /* processing FU header */
1385 S = (payload[0] & 0x80) == 0x80;
1386 E = (payload[0] & 0x40) == 0x40;
1388 GST_DEBUG_OBJECT (rtph265depay,
1389 "FU header with S %d, E %d, nal_unit_type %d", S, E,
1392 if (rtph265depay->wait_start && !S)
1397 goto not_implemented_donl_present;
1402 GST_DEBUG_OBJECT (rtph265depay, "Start of Fragmentation Unit");
1404 /* If a new FU unit started, while still processing an older one.
1405 * Assume that the remote payloader is buggy (doesn't set the end
1406 * bit) and send out what we've gathered thusfar */
1407 if (G_UNLIKELY (rtph265depay->current_fu_type != 0))
1408 gst_rtp_h265_finish_fragmentation_unit (rtph265depay);
1410 rtph265depay->current_fu_type = nal_unit_type;
1411 rtph265depay->fu_timestamp = timestamp;
1413 rtph265depay->wait_start = FALSE;
1415 /* reconstruct NAL header */
1417 ((payload[0] & 0x3f) << 9) | (nuh_layer_id << 3) |
1418 nuh_temporal_id_plus1;
1420 /* go back one byte so we can copy the payload + two bytes more in the front which
1421 * will be overwritten by the nal_header
1426 nalu_size = payload_len;
1427 outsize = nalu_size + sizeof (sync_bytes);
1428 outbuf = gst_buffer_new_and_alloc (outsize);
1430 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1431 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1432 map.data[sizeof (sync_bytes)] = nal_header >> 8;
1433 map.data[sizeof (sync_bytes) + 1] = nal_header & 0xff;
1434 gst_buffer_unmap (outbuf, &map);
1436 gst_rtp_copy_video_meta (rtph265depay, outbuf, rtp->buffer);
1438 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1440 /* and assemble in the adapter */
1441 gst_adapter_push (rtph265depay->adapter, outbuf);
1444 GST_DEBUG_OBJECT (rtph265depay,
1445 "Following part of Fragmentation Unit");
1447 /* strip off FU header byte */
1451 outsize = payload_len;
1452 outbuf = gst_buffer_new_and_alloc (outsize);
1453 gst_buffer_fill (outbuf, 0, payload, outsize);
1455 gst_rtp_copy_video_meta (rtph265depay, outbuf, rtp->buffer);
1457 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1459 /* and assemble in the adapter */
1460 gst_adapter_push (rtph265depay->adapter, outbuf);
1464 rtph265depay->fu_marker = marker;
1466 /* if NAL unit ends, flush the adapter */
1468 gst_rtp_h265_finish_fragmentation_unit (rtph265depay);
1469 GST_DEBUG_OBJECT (rtph265depay, "End of Fragmentation Unit");
1474 goto not_implemented; /* PACI packets Section 4.9 */
1477 rtph265depay->wait_start = FALSE;
1479 /* All other cases: Single NAL unit packet Section 4.6 */
1480 /* the entire payload is the output buffer */
1484 goto not_implemented_donl_present;
1487 nalu_size = payload_len;
1488 outsize = nalu_size + sizeof (sync_bytes);
1489 outbuf = gst_buffer_new_and_alloc (outsize);
1491 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1492 if (rtph265depay->byte_stream) {
1493 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1495 gst_buffer_unmap (outbuf, &map);
1496 goto not_implemented;
1498 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1499 gst_buffer_unmap (outbuf, &map);
1501 gst_rtp_copy_video_meta (rtph265depay, outbuf, rtp->buffer);
1503 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp, marker);
1514 GST_DEBUG_OBJECT (rtph265depay, "empty packet");
1519 GST_DEBUG_OBJECT (rtph265depay, "waiting for start");
1523 not_implemented_donl_present:
1525 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1526 (NULL), ("DONL field present not supported yet"));
1532 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1533 (NULL), ("NAL unit type %d not supported yet", nal_unit_type));
1539 gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay, GstEvent * event)
1541 GstRtpH265Depay *rtph265depay;
1543 rtph265depay = GST_RTP_H265_DEPAY (depay);
1545 switch (GST_EVENT_TYPE (event)) {
1546 case GST_EVENT_FLUSH_STOP:
1547 gst_rtp_h265_depay_reset (rtph265depay, FALSE);
1554 GST_RTP_BASE_DEPAYLOAD_CLASS (parent_class)->handle_event (depay, event);
1557 static GstStateChangeReturn
1558 gst_rtp_h265_depay_change_state (GstElement * element,
1559 GstStateChange transition)
1561 GstRtpH265Depay *rtph265depay;
1562 GstStateChangeReturn ret;
1564 rtph265depay = GST_RTP_H265_DEPAY (element);
1566 switch (transition) {
1567 case GST_STATE_CHANGE_NULL_TO_READY:
1569 case GST_STATE_CHANGE_READY_TO_PAUSED:
1570 gst_rtp_h265_depay_reset (rtph265depay, TRUE);
1576 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1578 switch (transition) {
1579 case GST_STATE_CHANGE_PAUSED_TO_READY:
1580 gst_rtp_h265_depay_reset (rtph265depay, TRUE);
1582 case GST_STATE_CHANGE_READY_TO_NULL:
1591 gst_rtp_h265_depay_plugin_init (GstPlugin * plugin)
1593 GST_DEBUG_CATEGORY_INIT (rtph265depay_debug, "rtph265depay", 0,
1594 "H265 Video RTP Depayloader");
1596 return gst_element_register (plugin, "rtph265depay",
1597 GST_RANK_SECONDARY, GST_TYPE_RTP_H265_DEPAY);