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 "gstrtph265depay.h"
32 GST_DEBUG_CATEGORY_STATIC (rtph265depay_debug);
33 #define GST_CAT_DEFAULT (rtph265depay_debug)
35 /* This is what we'll default to when downstream hasn't
36 * expressed a restriction or preference via caps */
37 #define DEFAULT_BYTE_STREAM TRUE
38 #define DEFAULT_ACCESS_UNIT FALSE
40 /* 3 zero bytes syncword */
41 static const guint8 sync_bytes[] = { 0, 0, 0, 1 };
43 static GstStaticPadTemplate gst_rtp_h265_depay_src_template =
44 GST_STATIC_PAD_TEMPLATE ("src",
48 /* FIXME - hvc1 and hev1 formats are not supported yet */
50 "stream-format = (string) hvc1, alignment = (string) au; "
52 "stream-format = (string) hev1, alignment = (string) au; " */
54 "stream-format = (string) byte-stream, alignment = (string) { nal, au }")
57 static GstStaticPadTemplate gst_rtp_h265_depay_sink_template =
58 GST_STATIC_PAD_TEMPLATE ("sink",
61 GST_STATIC_CAPS ("application/x-rtp, "
62 "media = (string) \"video\", "
63 "clock-rate = (int) 90000, " "encoding-name = (string) \"H265\"")
64 /** optional parameters **/
65 /* "profile-space = (int) [ 0, 3 ], " */
66 /* "profile-id = (int) [ 0, 31 ], " */
67 /* "tier-flag = (int) [ 0, 1 ], " */
68 /* "level-id = (int) [ 0, 255 ], " */
69 /* "interop-constraints = (string) ANY, " */
70 /* "profile-compatibility-indicator = (string) ANY, " */
71 /* "sprop-sub-layer-id = (int) [ 0, 6 ], " */
72 /* "recv-sub-layer-id = (int) [ 0, 6 ], " */
73 /* "max-recv-level-id = (int) [ 0, 255 ], " */
74 /* "tx-mode = (string) {MST , SST}, " */
75 /* "sprop-vps = (string) ANY, " */
76 /* "sprop-sps = (string) ANY, " */
77 /* "sprop-pps = (string) ANY, " */
78 /* "sprop-sei = (string) ANY, " */
79 /* "max-lsr = (int) ANY, " *//* MUST be in the range of MaxLumaSR to 16 * MaxLumaSR, inclusive */
80 /* "max-lps = (int) ANY, " *//* MUST be in the range of MaxLumaPS to 16 * MaxLumaPS, inclusive */
81 /* "max-cpb = (int) ANY, " *//* MUST be in the range of MaxCPB to 16 * MaxCPB, inclusive */
82 /* "max-dpb = (int) [1, 16], " */
83 /* "max-br = (int) ANY, " *//* MUST be in the range of MaxBR to 16 * MaxBR, inclusive, for the highest level */
84 /* "max-tr = (int) ANY, " *//* MUST be in the range of MaxTileRows to 16 * MaxTileRows, inclusive, for the highest level */
85 /* "max-tc = (int) ANY, " *//* MUST be in the range of MaxTileCols to 16 * MaxTileCols, inclusive, for the highest level */
86 /* "max-fps = (int) ANY, " */
87 /* "sprop-max-don-diff = (int) [0, 32767], " */
88 /* "sprop-depack-buf-nalus = (int) [0, 32767], " */
89 /* "sprop-depack-buf-nalus = (int) [0, 4294967295], " */
90 /* "depack-buf-cap = (int) [1, 4294967295], " */
91 /* "sprop-segmentation-id = (int) [0, 3], " */
92 /* "sprop-spatial-segmentation-idc = (string) ANY, " */
93 /* "dec-parallel-cap = (string) ANY, " */
96 #define gst_rtp_h265_depay_parent_class parent_class
97 G_DEFINE_TYPE (GstRtpH265Depay, gst_rtp_h265_depay,
98 GST_TYPE_RTP_BASE_DEPAYLOAD);
100 static void gst_rtp_h265_depay_finalize (GObject * object);
102 static GstStateChangeReturn gst_rtp_h265_depay_change_state (GstElement *
103 element, GstStateChange transition);
105 static GstBuffer *gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload,
107 static gboolean gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * filter,
109 static gboolean gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay,
113 gst_rtp_h265_depay_class_init (GstRtpH265DepayClass * klass)
115 GObjectClass *gobject_class;
116 GstElementClass *gstelement_class;
117 GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
119 gobject_class = (GObjectClass *) klass;
120 gstelement_class = (GstElementClass *) klass;
121 gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
123 gobject_class->finalize = gst_rtp_h265_depay_finalize;
125 gst_element_class_add_pad_template (gstelement_class,
126 gst_static_pad_template_get (&gst_rtp_h265_depay_src_template));
127 gst_element_class_add_pad_template (gstelement_class,
128 gst_static_pad_template_get (&gst_rtp_h265_depay_sink_template));
130 gst_element_class_set_static_metadata (gstelement_class,
131 "RTP H265 depayloader", "Codec/Depayloader/Network/RTP",
132 "Extracts H265 video from RTP packets (draft-ietf-payload-rtp-h265-03.txt)",
133 "Jurgen Slowack <jurgenslowack@gmail.com>");
134 gstelement_class->change_state = gst_rtp_h265_depay_change_state;
136 gstrtpbasedepayload_class->process = gst_rtp_h265_depay_process;
137 gstrtpbasedepayload_class->set_caps = gst_rtp_h265_depay_setcaps;
138 gstrtpbasedepayload_class->handle_event = gst_rtp_h265_depay_handle_event;
142 gst_rtp_h265_depay_init (GstRtpH265Depay * rtph265depay)
144 rtph265depay->adapter = gst_adapter_new ();
145 rtph265depay->picture_adapter = gst_adapter_new ();
146 rtph265depay->byte_stream = DEFAULT_BYTE_STREAM;
147 rtph265depay->stream_format = (gchar *) g_malloc (10);
148 rtph265depay->merge = DEFAULT_ACCESS_UNIT;
149 rtph265depay->vps = g_ptr_array_new_with_free_func (
150 (GDestroyNotify) gst_buffer_unref);
151 rtph265depay->sps = g_ptr_array_new_with_free_func (
152 (GDestroyNotify) gst_buffer_unref);
153 rtph265depay->pps = g_ptr_array_new_with_free_func (
154 (GDestroyNotify) gst_buffer_unref);
158 gst_rtp_h265_depay_reset (GstRtpH265Depay * rtph265depay)
160 gst_adapter_clear (rtph265depay->adapter);
161 rtph265depay->wait_start = TRUE;
162 gst_adapter_clear (rtph265depay->picture_adapter);
163 rtph265depay->picture_start = FALSE;
164 rtph265depay->last_keyframe = FALSE;
165 rtph265depay->last_ts = 0;
166 rtph265depay->current_fu_type = 0;
167 rtph265depay->new_codec_data = FALSE;
168 g_ptr_array_set_size (rtph265depay->vps, 0);
169 g_ptr_array_set_size (rtph265depay->sps, 0);
170 g_ptr_array_set_size (rtph265depay->pps, 0);
174 gst_rtp_h265_depay_finalize (GObject * object)
176 GstRtpH265Depay *rtph265depay;
178 rtph265depay = GST_RTP_H265_DEPAY (object);
180 if (rtph265depay->codec_data)
181 gst_buffer_unref (rtph265depay->codec_data);
183 g_free (rtph265depay->stream_format);
185 g_object_unref (rtph265depay->adapter);
186 g_object_unref (rtph265depay->picture_adapter);
188 g_ptr_array_free (rtph265depay->vps, TRUE);
189 g_ptr_array_free (rtph265depay->sps, TRUE);
190 g_ptr_array_free (rtph265depay->pps, TRUE);
192 G_OBJECT_CLASS (parent_class)->finalize (object);
196 gst_rtp_h265_depay_negotiate (GstRtpH265Depay * rtph265depay)
199 gint byte_stream = -1;
203 gst_pad_get_allowed_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay));
205 GST_DEBUG_OBJECT (rtph265depay, "allowed caps: %" GST_PTR_FORMAT, caps);
208 if (gst_caps_get_size (caps) > 0) {
209 GstStructure *s = gst_caps_get_structure (caps, 0);
210 const gchar *str = NULL;
212 if ((str = gst_structure_get_string (s, "stream-format"))) {
214 strcpy (rtph265depay->stream_format, str);
216 if (strcmp (str, "hev1") == 0) {
218 } else if (strcmp (str, "hvc1") == 0) {
220 } else if (strcmp (str, "byte-stream") == 0) {
223 GST_DEBUG_OBJECT (rtph265depay, "unknown stream-format: %s", str);
227 if ((str = gst_structure_get_string (s, "alignment"))) {
228 if (strcmp (str, "au") == 0) {
230 } else if (strcmp (str, "nal") == 0) {
233 GST_DEBUG_OBJECT (rtph265depay, "unknown alignment: %s", str);
237 gst_caps_unref (caps);
240 if (byte_stream != -1) {
241 GST_DEBUG_OBJECT (rtph265depay, "downstream requires byte-stream %d",
243 rtph265depay->byte_stream = byte_stream;
245 GST_DEBUG_OBJECT (rtph265depay, "defaulting to byte-stream %d",
246 DEFAULT_BYTE_STREAM);
247 strcpy (rtph265depay->stream_format, "byte-stream");
248 rtph265depay->byte_stream = DEFAULT_BYTE_STREAM;
251 GST_DEBUG_OBJECT (rtph265depay, "downstream requires merge %d", merge);
252 rtph265depay->merge = merge;
254 GST_DEBUG_OBJECT (rtph265depay, "defaulting to merge %d",
255 DEFAULT_ACCESS_UNIT);
256 rtph265depay->merge = DEFAULT_ACCESS_UNIT;
260 /* Stolen from bad/gst/mpegtsdemux/payloader_parsers.c */
261 /* variable length Exp-Golomb parsing according to H.265 spec section 9.2*/
263 read_golomb (GstBitReader * br, guint32 * value)
265 guint8 b, leading_zeros = -1;
268 for (b = 0; !b; leading_zeros++) {
269 if (!gst_bit_reader_get_bits_uint8 (br, &b, 1))
274 *value = (*value >> 1) - 1;
275 if (leading_zeros > 0) {
277 if (!gst_bit_reader_get_bits_uint32 (br, &tmp, leading_zeros))
286 parse_sps (GstMapInfo * map, guint32 * sps_id)
287 { /* To parse seq_parameter_set_id */
288 GstBitReader br = GST_BIT_READER_INIT (map->data + 15,
294 if (!read_golomb (&br, sps_id))
301 parse_pps (GstMapInfo * map, guint32 * sps_id, guint32 * pps_id)
302 { /* To parse picture_parameter_set_id */
303 GstBitReader br = GST_BIT_READER_INIT (map->data + 2,
309 if (!read_golomb (&br, pps_id))
311 if (!read_golomb (&br, sps_id))
319 gst_rtp_h265_set_src_caps (GstRtpH265Depay * rtph265depay)
324 if (!rtph265depay->byte_stream &&
325 (!rtph265depay->new_codec_data ||
326 rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0
327 || rtph265depay->pps->len == 0))
330 srccaps = gst_caps_new_simple ("video/x-h265",
331 "stream-format", G_TYPE_STRING,
332 rtph265depay->stream_format,
333 "alignment", G_TYPE_STRING, rtph265depay->merge ? "au" : "nal", NULL);
335 if (!rtph265depay->byte_stream) {
337 GstBuffer *codec_data;
340 guint num_vps = rtph265depay->vps->len;
341 guint num_sps = rtph265depay->sps->len;
342 guint num_pps = rtph265depay->pps->len;
343 GstMapInfo map, nalmap;
346 guint8 num_arrays = 0;
351 guint32 max_sub_layers_minus1, temporal_id_nesting_flag, chroma_format_idc,
352 bit_depth_luma_minus8, bit_depth_chroma_minus8,
353 min_spatial_segmentation_idc;
355 /* Fixme: Current implementation is not embedding SEI in codec_data */
360 /* start with 23 bytes header */
363 num_arrays = (num_vps > 0) + (num_sps > 0) + (num_pps > 0);
366 /* add size of vps, sps & pps */
367 for (i = 0; i < num_vps; i++)
368 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
369 for (i = 0; i < num_sps; i++)
370 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
371 for (i = 0; i < num_pps; i++)
372 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
374 GST_DEBUG_OBJECT (rtph265depay,
375 "constructing codec_data: num_vps =%d num_sps=%d, num_pps=%d", num_vps,
378 codec_data = gst_buffer_new_and_alloc (len);
379 g_debug ("alloc_len: %u", len);
380 gst_buffer_map (codec_data, &map, GST_MAP_READWRITE);
383 memset (data, 0, map.size);
385 /* Parsing sps to get the info required further on */
387 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
390 max_sub_layers_minus1 = ((nalmap.data[2]) >> 1) & 0x07;
391 temporal_id_nesting_flag = nalmap.data[2] & 0x01;
393 gst_bit_reader_init (&br, nalmap.data + 15, nalmap.size - 15);
395 read_golomb (&br, &tmp); /* sps_seq_parameter_set_id */
396 read_golomb (&br, &chroma_format_idc); /* chroma_format_idc */
398 if (chroma_format_idc == 3)
400 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* separate_colour_plane_flag */
402 read_golomb (&br, &tmp); /* pic_width_in_luma_samples */
403 read_golomb (&br, &tmp); /* pic_height_in_luma_samples */
405 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* conformance_window_flag */
407 read_golomb (&br, &tmp); /* conf_win_left_offset */
408 read_golomb (&br, &tmp); /* conf_win_right_offset */
409 read_golomb (&br, &tmp); /* conf_win_top_offset */
410 read_golomb (&br, &tmp); /* conf_win_bottom_offset */
413 read_golomb (&br, &bit_depth_luma_minus8); /* bit_depth_luma_minus8 */
414 read_golomb (&br, &bit_depth_chroma_minus8); /* bit_depth_chroma_minus8 */
416 GST_DEBUG_OBJECT (rtph265depay,
417 "Ignoring min_spatial_segmentation for now (assuming zero)");
419 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 */
423 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
425 /* HEVCDecoderConfigurationVersion = 1 */
428 /* Copy from profile_tier_level (Rec. ITU-T H.265 (04/2013) section 7.3.3
430 * profile_space | tier_flat | profile_idc |
431 * profile_compatibility_flags | constraint_indicator_flags |
432 * level_idc | progressive_source_flag | interlaced_source_flag
433 * non_packed_constraint_flag | frame_only_constraint_flag
434 * reserved_zero_44bits | level_idc */
435 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
437 for (i = 0; i < 12; i++)
438 data[i + 1] = nalmap.data[i];
439 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
441 /* min_spatial_segmentation_idc */
442 GST_WRITE_UINT16_BE (data + 13, min_spatial_segmentation_idc);
444 data[15] = 0xfc; /* keeping parrallelismType as zero (unknown) */
445 data[16] = 0xfc | chroma_format_idc;
446 data[17] = 0xf8 | bit_depth_luma_minus8;
447 data[18] = 0xf8 | bit_depth_chroma_minus8;
448 data[19] = 0x00; /* keep avgFrameRate as unspecified */
449 data[20] = 0x00; /* keep avgFrameRate as unspecified */
450 /* constFrameRate(2 bits): 0, stream may or may not be of constant framerate
451 * numTemporalLayers (3 bits): number of temporal layers, value from SPS
452 * TemporalIdNested (1 bit): sps_temporal_id_nesting_flag from SPS
453 * lengthSizeMinusOne (2 bits): plus 1 indicates the length of the NALUnitLength */
455 0x00 | ((max_sub_layers_minus1 +
456 1) << 3) | (temporal_id_nesting_flag << 2) | (nl - 1);
457 GST_WRITE_UINT8 (data + 22, num_arrays); /* numOfArrays */
463 /* array_completeness | reserved_zero bit | nal_unit_type */
464 data[0] = 0x00 | 0x20;
467 GST_WRITE_UINT16_BE (data, num_vps);
470 for (i = 0; i < num_vps; i++) {
472 gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
473 GST_WRITE_UINT16_BE (data, nal_size);
474 gst_buffer_extract (g_ptr_array_index (rtph265depay->vps, i), 0,
476 data += 2 + nal_size;
477 GST_DEBUG_OBJECT (rtph265depay, "Copied VPS %d of length %u", i,
484 /* array_completeness | reserved_zero bit | nal_unit_type */
485 data[0] = 0x00 | 0x21;
488 GST_WRITE_UINT16_BE (data, num_sps);
491 for (i = 0; i < num_sps; i++) {
493 gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
494 GST_WRITE_UINT16_BE (data, nal_size);
495 gst_buffer_extract (g_ptr_array_index (rtph265depay->sps, i), 0,
497 data += 2 + nal_size;
498 GST_DEBUG_OBJECT (rtph265depay, "Copied SPS %d of length %u", i,
505 /* array_completeness | reserved_zero bit | nal_unit_type */
506 data[0] = 0x00 | 0x22;
509 GST_WRITE_UINT16_BE (data, num_pps);
512 for (i = 0; i < num_pps; i++) {
514 gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
515 GST_WRITE_UINT16_BE (data, nal_size);
516 gst_buffer_extract (g_ptr_array_index (rtph265depay->pps, i), 0,
518 data += 2 + nal_size;
519 GST_DEBUG_OBJECT (rtph265depay, "Copied PPS %d of length %u", i,
524 new_size = data - map.data;
525 gst_buffer_unmap (codec_data, &map);
526 gst_buffer_set_size (codec_data, new_size);
528 gst_caps_set_simple (srccaps,
529 "codec_data", GST_TYPE_BUFFER, codec_data, NULL);
530 gst_buffer_unref (codec_data);
533 res = gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
535 gst_caps_unref (srccaps);
538 rtph265depay->new_codec_data = FALSE;
544 gst_rtp_h265_add_vps_sps_pps (GstElement * rtph265, GPtrArray * vps_array,
545 GPtrArray * sps_array, GPtrArray * pps_array, GstBuffer * nal)
551 gst_buffer_map (nal, &map, GST_MAP_READ);
553 type = (map.data[0] >> 1) & 0x3f;
555 if (type == GST_H265_VPS_NUT) {
556 guint32 vps_id = (map.data[2] >> 4) & 0x0f;
558 for (i = 0; i < vps_array->len; i++) {
559 GstBuffer *vps = g_ptr_array_index (vps_array, i);
563 gst_buffer_map (vps, &vpsmap, GST_MAP_READ);
564 tmp_vps_id = (vpsmap.data[2] >> 4) & 0x0f;
566 if (vps_id == tmp_vps_id) {
567 if (map.size == vpsmap.size &&
568 memcmp (map.data, vpsmap.data, vpsmap.size) == 0) {
569 GST_LOG_OBJECT (rtph265, "Unchanged VPS %u, not updating", vps_id);
570 gst_buffer_unmap (vps, &vpsmap);
573 gst_buffer_unmap (vps, &vpsmap);
574 g_ptr_array_remove_index_fast (vps_array, i);
575 g_ptr_array_add (vps_array, nal);
576 GST_LOG_OBJECT (rtph265, "Modified VPS %u, replacing", vps_id);
580 gst_buffer_unmap (vps, &vpsmap);
582 GST_LOG_OBJECT (rtph265, "Adding new VPS %u", vps_id);
583 g_ptr_array_add (vps_array, nal);
584 } else if (type == GST_H265_SPS_NUT) {
587 if (!parse_sps (&map, &sps_id)) {
588 GST_WARNING_OBJECT (rtph265, "Invalid SPS,"
589 " can't parse seq_parameter_set_id");
593 for (i = 0; i < sps_array->len; i++) {
594 GstBuffer *sps = g_ptr_array_index (sps_array, i);
598 gst_buffer_map (sps, &spsmap, GST_MAP_READ);
599 parse_sps (&spsmap, &tmp_sps_id);
601 if (sps_id == tmp_sps_id) {
602 if (map.size == spsmap.size &&
603 memcmp (map.data, spsmap.data, spsmap.size) == 0) {
604 GST_LOG_OBJECT (rtph265, "Unchanged SPS %u, not updating", sps_id);
605 gst_buffer_unmap (sps, &spsmap);
608 gst_buffer_unmap (sps, &spsmap);
609 g_ptr_array_remove_index_fast (sps_array, i);
610 g_ptr_array_add (sps_array, nal);
611 GST_LOG_OBJECT (rtph265, "Modified SPS %u, replacing", sps_id);
615 gst_buffer_unmap (sps, &spsmap);
617 GST_LOG_OBJECT (rtph265, "Adding new SPS %u", sps_id);
618 g_ptr_array_add (sps_array, nal);
619 } else if (type == GST_H265_PPS_NUT) {
623 if (!parse_pps (&map, &sps_id, &pps_id)) {
624 GST_WARNING_OBJECT (rtph265, "Invalid PPS,"
625 " can't parse seq_parameter_set_id or pic_parameter_set_id");
629 for (i = 0; i < pps_array->len; i++) {
630 GstBuffer *pps = g_ptr_array_index (pps_array, i);
636 gst_buffer_map (pps, &ppsmap, GST_MAP_READ);
637 parse_pps (&ppsmap, &tmp_sps_id, &tmp_pps_id);
639 if (sps_id == tmp_sps_id && pps_id == tmp_pps_id) {
640 if (map.size == ppsmap.size &&
641 memcmp (map.data, ppsmap.data, ppsmap.size) == 0) {
642 GST_LOG_OBJECT (rtph265, "Unchanged PPS %u:%u, not updating", sps_id,
644 gst_buffer_unmap (pps, &ppsmap);
647 gst_buffer_unmap (pps, &ppsmap);
648 g_ptr_array_remove_index_fast (pps_array, i);
649 g_ptr_array_add (pps_array, nal);
650 GST_LOG_OBJECT (rtph265, "Modified PPS %u:%u, replacing",
655 gst_buffer_unmap (pps, &ppsmap);
657 GST_LOG_OBJECT (rtph265, "Adding new PPS %u:%i", sps_id, pps_id);
658 g_ptr_array_add (pps_array, nal);
664 gst_buffer_unmap (nal, &map);
669 gst_buffer_unmap (nal, &map);
670 gst_buffer_unref (nal);
677 gst_rtp_h265_depay_add_vps_sps_pps (GstRtpH265Depay * rtph265depay,
680 if (gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265depay),
681 rtph265depay->vps, rtph265depay->sps, rtph265depay->pps, nal))
682 rtph265depay->new_codec_data = TRUE;
686 gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
689 GstStructure *structure = gst_caps_get_structure (caps, 0);
690 GstRtpH265Depay *rtph265depay;
692 GstBuffer *codec_data;
696 rtph265depay = GST_RTP_H265_DEPAY (depayload);
698 if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
700 depayload->clock_rate = clock_rate;
702 /* Base64 encoded, comma separated config NALs */
703 ps = gst_structure_get_string (structure, "sprop-parameter-sets");
705 /* negotiate with downstream w.r.t. output format and alignment */
706 gst_rtp_h265_depay_negotiate (rtph265depay);
708 if (rtph265depay->byte_stream && ps != NULL) {
709 /* for bytestream we only need the parameter sets but we don't error out
710 * when they are not there, we assume they are in the stream. */
715 params = g_strsplit (ps, ",", 0);
717 /* count total number of bytes in base64. Also include the sync bytes in
718 * front of the params. */
720 for (i = 0; params[i]; i++) {
721 len += strlen (params[i]);
722 len += sizeof (sync_bytes);
724 /* we seriously overshoot the length, but it's fine. */
725 codec_data = gst_buffer_new_and_alloc (len);
727 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
730 for (i = 0; params[i]; i++) {
734 GST_DEBUG_OBJECT (depayload, "decoding param %d (%s)", i, params[i]);
735 memcpy (ptr, sync_bytes, sizeof (sync_bytes));
736 ptr += sizeof (sync_bytes);
738 g_base64_decode_step (params[i], strlen (params[i]), ptr, &state,
740 GST_DEBUG_OBJECT (depayload, "decoded %d bytes", len);
741 total += len + sizeof (sync_bytes);
744 gst_buffer_unmap (codec_data, &map);
745 gst_buffer_resize (codec_data, 0, total);
748 /* keep the codec_data, we need to send it as the first buffer. We cannot
749 * push it in the adapter because the adapter might be flushed on discont.
751 if (rtph265depay->codec_data)
752 gst_buffer_unref (rtph265depay->codec_data);
753 rtph265depay->codec_data = codec_data;
754 } else if (!rtph265depay->byte_stream) {
759 goto incomplete_caps;
761 params = g_strsplit (ps, ",", 0);
763 GST_DEBUG_OBJECT (depayload, "we have %d params", g_strv_length (params));
765 /* start with 23 bytes header */
766 for (i = 0; params[i]; i++) {
773 nal_len = strlen (params[i]);
774 nal = gst_buffer_new_and_alloc (nal_len);
775 gst_buffer_map (nal, &nalmap, GST_MAP_READWRITE);
778 g_base64_decode_step (params[i], nal_len, nalmap.data, &state, &save);
780 GST_DEBUG_OBJECT (depayload, "adding param %d as %s", i,
781 (((nalmap.data[0] >> 1) & 0x3f) ==
782 32) ? "VPS" : (((nalmap.data[0] >> 1) & 0x3f) ==
783 33) ? "SPS" : "PPS");
785 gst_buffer_unmap (nal, &nalmap);
786 gst_buffer_set_size (nal, nal_len);
788 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay, nal);
792 if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0)
793 goto incomplete_caps;
796 return gst_rtp_h265_set_src_caps (rtph265depay);
801 GST_DEBUG_OBJECT (depayload, "we have incomplete caps,"
802 " doing setcaps later");
808 gst_rtp_h265_complete_au (GstRtpH265Depay * rtph265depay,
809 GstClockTime * out_timestamp, gboolean * out_keyframe)
814 /* we had a picture in the adapter and we completed it */
815 GST_DEBUG_OBJECT (rtph265depay, "taking completed AU");
816 outsize = gst_adapter_available (rtph265depay->picture_adapter);
817 outbuf = gst_adapter_take_buffer (rtph265depay->picture_adapter, outsize);
819 *out_timestamp = rtph265depay->last_ts;
820 *out_keyframe = rtph265depay->last_keyframe;
822 rtph265depay->last_keyframe = FALSE;
823 rtph265depay->picture_start = FALSE;
828 /* VPS/SPS/PPS/RADL/TSA/RASL/IDR/CRA is considered key, all others DELTA;
829 * so downstream waiting for keyframe can pick up at VPS/SPS/PPS/IDR */
831 #define NAL_TYPE_IS_PARAMETER_SET(nt) ( ((nt) == GST_H265_VPS_NUT)\
832 || ((nt) == GST_H265_SPS_NUT)\
833 || ((nt) == GST_H265_PPS_NUT) )
835 #define NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt) ( ((nt) == GST_H265_NAL_SLICE_TRAIL_N)\
836 || ((nt) == GST_H265_NAL_SLICE_TRAIL_R)\
837 || ((nt) == GST_H265_NAL_SLICE_TSA_N)\
838 || ((nt) == GST_H265_NAL_SLICE_TSA_R)\
839 || ((nt) == GST_H265_NAL_SLICE_STSA_N)\
840 || ((nt) == GST_H265_NAL_SLICE_STSA_R)\
841 || ((nt) == GST_H265_NAL_SLICE_RASL_N)\
842 || ((nt) == GST_H265_NAL_SLICE_RASL_R)\
843 || ((nt) == GST_H265_NAL_SLICE_BLA_W_LP)\
844 || ((nt) == GST_H265_NAL_SLICE_BLA_W_RADL)\
845 || ((nt) == GST_H265_NAL_SLICE_BLA_N_LP)\
846 || ((nt) == GST_H265_NAL_SLICE_IDR_W_RADL)\
847 || ((nt) == GST_H265_NAL_SLICE_IDR_N_LP)\
848 || ((nt) == GST_H265_NAL_SLICE_CRA_NUT) )
850 #define NAL_TYPE_IS_KEY(nt) (NAL_TYPE_IS_PARAMETER_SET(nt) || NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt))
853 gst_rtp_h265_depay_handle_nal (GstRtpH265Depay * rtph265depay, GstBuffer * nal,
854 GstClockTime in_timestamp, gboolean marker)
856 GstRTPBaseDepayload *depayload = GST_RTP_BASE_DEPAYLOAD (rtph265depay);
859 GstBuffer *outbuf = NULL;
860 GstClockTime out_timestamp;
861 gboolean keyframe, out_keyframe;
863 gst_buffer_map (nal, &map, GST_MAP_READ);
864 if (G_UNLIKELY (map.size < 5))
867 nal_type = (map.data[4] >> 1) & 0x3f;
868 GST_DEBUG_OBJECT (rtph265depay, "handle NAL type %d (RTP marker bit %d)",
871 keyframe = NAL_TYPE_IS_KEY (nal_type);
873 out_keyframe = keyframe;
874 out_timestamp = in_timestamp;
876 if (!rtph265depay->byte_stream) {
877 if (NAL_TYPE_IS_PARAMETER_SET (nal_type)) {
878 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay,
879 gst_buffer_copy_region (nal, GST_BUFFER_COPY_ALL,
880 4, gst_buffer_get_size (nal) - 4));
881 gst_buffer_unmap (nal, &map);
882 gst_buffer_unref (nal);
884 } else if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0) {
885 /* Down push down any buffer in non-bytestream mode if the SPS/PPS haven't
888 gst_pad_push_event (GST_RTP_BASE_DEPAYLOAD_SINKPAD (depayload),
889 gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
890 gst_structure_new ("GstForceKeyUnit",
891 "all-headers", G_TYPE_BOOLEAN, TRUE, NULL)));
892 gst_buffer_unmap (nal, &map);
893 gst_buffer_unref (nal);
897 if (rtph265depay->new_codec_data &&
898 rtph265depay->sps->len > 0 && rtph265depay->pps->len > 0)
899 gst_rtp_h265_set_src_caps (rtph265depay);
902 if (rtph265depay->merge) {
903 gboolean start = FALSE, complete = FALSE;
905 /* marker bit isn't mandatory so in the following code we try to detect
906 * an AU boundary (see H.265 spec section 7.4.2.4.4) */
909 if (NAL_TYPE_IS_CODED_SLICE_SEGMENT (nal_type)) {
910 /* 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 */
912 if (((map.data[6] >> 7) & 0x01) == 1) {
916 } else if ((nal_type >= 32 && nal_type <= 35)
917 || nal_type == 39 || (nal_type >= 41 && nal_type <= 44)
918 || (nal_type >= 48 && nal_type <= 55)) {
919 /* VPS, SPS, PPS, SEI, ... terminate an access unit */
922 GST_DEBUG_OBJECT (depayload, "start %d, complete %d", start, complete);
924 if (complete && rtph265depay->picture_start)
925 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
929 gst_buffer_unmap (nal, &map);
931 GST_DEBUG_OBJECT (depayload, "adding NAL to picture adapter");
932 gst_adapter_push (rtph265depay->picture_adapter, nal);
933 rtph265depay->last_ts = in_timestamp;
934 rtph265depay->last_keyframe |= keyframe;
935 rtph265depay->picture_start |= start;
938 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
941 /* no merge, output is input nal */
942 GST_DEBUG_OBJECT (depayload, "using NAL as output");
944 gst_buffer_unmap (nal, &map);
948 /* prepend codec_data */
949 if (rtph265depay->codec_data) {
950 GST_DEBUG_OBJECT (depayload, "prepending codec_data");
951 outbuf = gst_buffer_append (rtph265depay->codec_data, outbuf);
952 rtph265depay->codec_data = NULL;
955 outbuf = gst_buffer_make_writable (outbuf);
957 GST_BUFFER_PTS (outbuf) = out_timestamp;
960 GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
962 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
970 GST_WARNING_OBJECT (depayload, "dropping short NAL");
971 gst_buffer_unmap (nal, &map);
972 gst_buffer_unref (nal);
978 gst_rtp_h265_push_fragmentation_unit (GstRtpH265Depay * rtph265depay,
985 outsize = gst_adapter_available (rtph265depay->adapter);
986 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
988 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
989 GST_DEBUG_OBJECT (rtph265depay, "output %d bytes", outsize);
991 if (rtph265depay->byte_stream) {
992 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
994 goto not_implemented;
996 gst_buffer_unmap (outbuf, &map);
998 rtph265depay->current_fu_type = 0;
1000 outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf,
1001 rtph265depay->fu_timestamp, rtph265depay->fu_marker);
1003 if (send && outbuf) {
1004 gst_rtp_base_depayload_push (GST_RTP_BASE_DEPAYLOAD (rtph265depay), outbuf);
1011 GST_ERROR_OBJECT (rtph265depay,
1012 ("Only bytestream format is currently supported."));
1013 gst_buffer_unmap (outbuf, &map);
1019 gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload, GstBuffer * buf)
1021 GstRtpH265Depay *rtph265depay;
1022 GstBuffer *outbuf = NULL;
1023 guint8 nal_unit_type;
1024 GstRTPBuffer rtp = { NULL };
1026 rtph265depay = GST_RTP_H265_DEPAY (depayload);
1028 /* flush remaining data on discont */
1029 if (GST_BUFFER_IS_DISCONT (buf)) {
1030 gst_adapter_clear (rtph265depay->adapter);
1031 rtph265depay->wait_start = TRUE;
1032 rtph265depay->current_fu_type = 0;
1040 guint outsize, nalu_size;
1041 GstClockTime timestamp;
1043 guint8 nuh_layer_id, nuh_temporal_id_plus1;
1047 gboolean donl_present = FALSE;
1050 timestamp = GST_BUFFER_PTS (buf);
1052 gst_rtp_buffer_map (buf, GST_MAP_READ, &rtp);
1054 payload_len = gst_rtp_buffer_get_payload_len (&rtp);
1055 payload = gst_rtp_buffer_get_payload (&rtp);
1056 marker = gst_rtp_buffer_get_marker (&rtp);
1058 GST_DEBUG_OBJECT (rtph265depay, "receiving %d bytes", payload_len);
1060 if (payload_len == 0)
1063 /* +---------------+---------------+
1064 * |0|1|2|3|4|5|6|7|0|1|2|3|4|5|6|7|
1065 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1066 * |F| Type | LayerId | TID |
1067 * +-------------+-----------------+
1072 nal_unit_type = (payload[0] >> 1) & 0x3f;
1073 nuh_layer_id = ((payload[0] & 0x01) << 5) | (payload[1] >> 3); /* should be zero for now but this could change in future HEVC extensions */
1074 nuh_temporal_id_plus1 = payload[1] & 0x03;
1076 /* At least two byte header with type */
1079 GST_DEBUG_OBJECT (rtph265depay,
1080 "NAL header nal_unit_type %d, nuh_temporal_id_plus1 %d", nal_unit_type,
1081 nuh_temporal_id_plus1);
1083 GST_FIXME_OBJECT (rtph265depay, "Assuming DONL field is not present");
1085 /* FIXME - assuming DONL field is not present for now */
1086 /*donl_present = (tx-mode == "MST") || (sprop-max-don-diff > 0); */
1088 /* If FU unit was being processed, but the current nal is of a different
1089 * type. Assume that the remote payloader is buggy (didn't set the end bit
1090 * when the FU ended) and send out what we gathered thusfar */
1091 if (G_UNLIKELY (rtph265depay->current_fu_type != 0 &&
1092 nal_unit_type != rtph265depay->current_fu_type))
1093 gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE);
1095 switch (nal_unit_type) {
1098 GST_DEBUG_OBJECT (rtph265depay, "Processing aggregation packet");
1100 /* Aggregation packet (section 4.7) */
1102 /* An example of an AP packet containing two aggregation units
1103 without the DONL and DOND fields
1106 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
1107 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1109 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1110 | PayloadHdr (Type=48) | NALU 1 Size |
1111 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1113 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ NALU 1 Data |
1116 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1117 | . . . | NALU 2 Size | NALU 2 HDR |
1118 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1120 +-+-+-+-+-+-+-+-+ NALU 2 Data |
1122 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1123 | :...OPTIONAL RTP padding |
1124 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1128 payload += header_len;
1129 payload_len -= header_len;
1131 rtph265depay->wait_start = FALSE;
1135 goto not_implemented_donl_present;
1138 while (payload_len > 2) {
1140 nalu_size = (payload[0] << 8) | payload[1];
1142 /* dont include nalu_size */
1143 if (nalu_size > (payload_len - 2))
1144 nalu_size = payload_len - 2;
1146 outsize = nalu_size + sizeof (sync_bytes);
1147 outbuf = gst_buffer_new_and_alloc (outsize);
1149 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1150 if (rtph265depay->byte_stream) {
1151 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1153 goto not_implemented;
1156 /* strip NALU size */
1160 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1161 gst_buffer_unmap (outbuf, &map);
1163 gst_adapter_push (rtph265depay->adapter, outbuf);
1165 payload += nalu_size;
1166 payload_len -= nalu_size;
1169 outsize = gst_adapter_available (rtph265depay->adapter);
1171 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
1173 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1180 GST_DEBUG_OBJECT (rtph265depay, "Processing Fragmentation Unit");
1182 /* Fragmentation units (FUs) Section 4.8 */
1184 /* The structure of a Fragmentation Unit (FU)
1186 * 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
1187 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1188 | PayloadHdr (Type=49) | FU header | DONL (cond) |
1189 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-|
1194 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1195 | :...OPTIONAL RTP padding |
1196 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1202 payload += header_len;
1203 payload_len -= header_len;
1205 /* processing FU header */
1206 S = (payload[0] & 0x80) == 0x80;
1207 E = (payload[0] & 0x40) == 0x40;
1209 GST_DEBUG_OBJECT (rtph265depay,
1210 "FU header with S %d, E %d, nal_unit_type %d", S, E,
1213 if (rtph265depay->wait_start && !S)
1218 goto not_implemented_donl_present;
1223 GST_DEBUG_OBJECT (rtph265depay, "Start of Fragmentation Unit");
1225 /* If a new FU unit started, while still processing an older one.
1226 * Assume that the remote payloader is buggy (doesn't set the end
1227 * bit) and send out what we've gathered thusfar */
1228 if (G_UNLIKELY (rtph265depay->current_fu_type != 0))
1229 gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE);
1231 rtph265depay->current_fu_type = nal_unit_type;
1232 rtph265depay->fu_timestamp = timestamp;
1234 rtph265depay->wait_start = FALSE;
1236 /* reconstruct NAL header */
1238 ((payload[0] & 0x3f) << 9) | (nuh_layer_id << 3) |
1239 nuh_temporal_id_plus1;
1241 /* go back one byte so we can copy the payload + two bytes more in the front which
1242 * will be overwritten by the nal_header
1247 nalu_size = payload_len;
1248 outsize = nalu_size + sizeof (sync_bytes);
1249 outbuf = gst_buffer_new_and_alloc (outsize);
1251 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1252 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1253 map.data[sizeof (sync_bytes)] = nal_header >> 8;
1254 map.data[sizeof (sync_bytes) + 1] = nal_header & 0xff;
1255 gst_buffer_unmap (outbuf, &map);
1257 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1259 /* and assemble in the adapter */
1260 gst_adapter_push (rtph265depay->adapter, outbuf);
1263 GST_DEBUG_OBJECT (rtph265depay,
1264 "Following part of Fragmentation Unit");
1266 /* strip off FU header byte */
1270 outsize = payload_len;
1271 outbuf = gst_buffer_new_and_alloc (outsize);
1272 gst_buffer_fill (outbuf, 0, payload, outsize);
1274 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1276 /* and assemble in the adapter */
1277 gst_adapter_push (rtph265depay->adapter, outbuf);
1281 rtph265depay->fu_marker = marker;
1283 /* if NAL unit ends, flush the adapter */
1285 outbuf = gst_rtp_h265_push_fragmentation_unit (rtph265depay, FALSE);
1286 GST_DEBUG_OBJECT (rtph265depay, "End of Fragmentation Unit");
1291 goto not_implemented; /* PACI packets Section 4.9 */
1294 rtph265depay->wait_start = FALSE;
1296 /* All other cases: Single NAL unit packet Section 4.6 */
1297 /* the entire payload is the output buffer */
1301 goto not_implemented_donl_present;
1304 nalu_size = payload_len;
1305 outsize = nalu_size + sizeof (sync_bytes);
1306 outbuf = gst_buffer_new_and_alloc (outsize);
1308 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1309 if (rtph265depay->byte_stream) {
1310 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1312 goto not_implemented;
1314 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1315 gst_buffer_unmap (outbuf, &map);
1317 outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1322 gst_rtp_buffer_unmap (&rtp);
1330 GST_DEBUG_OBJECT (rtph265depay, "empty packet");
1331 gst_rtp_buffer_unmap (&rtp);
1336 GST_DEBUG_OBJECT (rtph265depay, "waiting for start");
1337 gst_rtp_buffer_unmap (&rtp);
1341 not_implemented_donl_present:
1343 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1344 (NULL), ("DONL field present not supported yet"));
1345 gst_rtp_buffer_unmap (&rtp);
1351 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1352 (NULL), ("NAL unit type %d not supported yet", nal_unit_type));
1353 gst_rtp_buffer_unmap (&rtp);
1359 gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay, GstEvent * event)
1361 GstRtpH265Depay *rtph265depay;
1363 rtph265depay = GST_RTP_H265_DEPAY (depay);
1365 switch (GST_EVENT_TYPE (event)) {
1366 case GST_EVENT_FLUSH_STOP:
1367 gst_rtp_h265_depay_reset (rtph265depay);
1374 GST_RTP_BASE_DEPAYLOAD_CLASS (parent_class)->handle_event (depay, event);
1377 static GstStateChangeReturn
1378 gst_rtp_h265_depay_change_state (GstElement * element,
1379 GstStateChange transition)
1381 GstRtpH265Depay *rtph265depay;
1382 GstStateChangeReturn ret;
1384 rtph265depay = GST_RTP_H265_DEPAY (element);
1386 switch (transition) {
1387 case GST_STATE_CHANGE_NULL_TO_READY:
1389 case GST_STATE_CHANGE_READY_TO_PAUSED:
1390 gst_rtp_h265_depay_reset (rtph265depay);
1396 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1398 switch (transition) {
1399 case GST_STATE_CHANGE_READY_TO_NULL:
1408 gst_rtp_h265_depay_plugin_init (GstPlugin * plugin)
1410 GST_DEBUG_CATEGORY_INIT (rtph265depay_debug, "rtph265depay", 0,
1411 "H265 Video RTP Depayloader");
1413 return gst_element_register (plugin, "rtph265depay",
1414 GST_RANK_SECONDARY, GST_TYPE_RTP_H265_DEPAY);