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"
33 GST_DEBUG_CATEGORY_STATIC (rtph265depay_debug);
34 #define GST_CAT_DEFAULT (rtph265depay_debug)
36 /* This is what we'll default to when downstream hasn't
37 * expressed a restriction or preference via caps */
38 #define DEFAULT_BYTE_STREAM TRUE
39 #define DEFAULT_ACCESS_UNIT FALSE
41 /* 3 zero bytes syncword */
42 static const guint8 sync_bytes[] = { 0, 0, 0, 1 };
44 static GstStaticPadTemplate gst_rtp_h265_depay_src_template =
45 GST_STATIC_PAD_TEMPLATE ("src",
49 /* FIXME - hvc1 and hev1 formats are not supported yet */
51 "stream-format = (string) hvc1, alignment = (string) au; "
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_pad_template (gstelement_class,
127 gst_static_pad_template_get (&gst_rtp_h265_depay_src_template));
128 gst_element_class_add_pad_template (gstelement_class,
129 gst_static_pad_template_get (&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 (draft-ietf-payload-rtp-h265-03.txt)",
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 = (gchar *) g_malloc (10);
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)
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);
175 gst_rtp_h265_depay_finalize (GObject * object)
177 GstRtpH265Depay *rtph265depay;
179 rtph265depay = GST_RTP_H265_DEPAY (object);
181 if (rtph265depay->codec_data)
182 gst_buffer_unref (rtph265depay->codec_data);
184 g_free (rtph265depay->stream_format);
186 g_object_unref (rtph265depay->adapter);
187 g_object_unref (rtph265depay->picture_adapter);
189 g_ptr_array_free (rtph265depay->vps, TRUE);
190 g_ptr_array_free (rtph265depay->sps, TRUE);
191 g_ptr_array_free (rtph265depay->pps, TRUE);
193 G_OBJECT_CLASS (parent_class)->finalize (object);
197 gst_rtp_h265_depay_negotiate (GstRtpH265Depay * rtph265depay)
200 gint byte_stream = -1;
204 gst_pad_get_allowed_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay));
206 GST_DEBUG_OBJECT (rtph265depay, "allowed caps: %" GST_PTR_FORMAT, caps);
209 if (gst_caps_get_size (caps) > 0) {
210 GstStructure *s = gst_caps_get_structure (caps, 0);
211 const gchar *str = NULL;
213 if ((str = gst_structure_get_string (s, "stream-format"))) {
215 strcpy (rtph265depay->stream_format, str);
217 if (strcmp (str, "hev1") == 0) {
219 } else if (strcmp (str, "hvc1") == 0) {
221 } else if (strcmp (str, "byte-stream") == 0) {
224 GST_DEBUG_OBJECT (rtph265depay, "unknown stream-format: %s", str);
228 if ((str = gst_structure_get_string (s, "alignment"))) {
229 if (strcmp (str, "au") == 0) {
231 } else if (strcmp (str, "nal") == 0) {
234 GST_DEBUG_OBJECT (rtph265depay, "unknown alignment: %s", str);
238 gst_caps_unref (caps);
241 if (byte_stream != -1) {
242 GST_DEBUG_OBJECT (rtph265depay, "downstream requires byte-stream %d",
244 rtph265depay->byte_stream = byte_stream;
246 GST_DEBUG_OBJECT (rtph265depay, "defaulting to byte-stream %d",
247 DEFAULT_BYTE_STREAM);
248 strcpy (rtph265depay->stream_format, "byte-stream");
249 rtph265depay->byte_stream = DEFAULT_BYTE_STREAM;
252 GST_DEBUG_OBJECT (rtph265depay, "downstream requires merge %d", merge);
253 rtph265depay->merge = merge;
255 GST_DEBUG_OBJECT (rtph265depay, "defaulting to merge %d",
256 DEFAULT_ACCESS_UNIT);
257 rtph265depay->merge = DEFAULT_ACCESS_UNIT;
261 /* Stolen from bad/gst/mpegtsdemux/payloader_parsers.c */
262 /* variable length Exp-Golomb parsing according to H.265 spec section 9.2*/
264 read_golomb (GstBitReader * br, guint32 * value)
266 guint8 b, leading_zeros = -1;
269 for (b = 0; !b; leading_zeros++) {
270 if (!gst_bit_reader_get_bits_uint8 (br, &b, 1))
275 *value = (*value >> 1) - 1;
276 if (leading_zeros > 0) {
278 if (!gst_bit_reader_get_bits_uint32 (br, &tmp, leading_zeros))
287 parse_sps (GstMapInfo * map, guint32 * sps_id)
288 { /* To parse seq_parameter_set_id */
289 GstBitReader br = GST_BIT_READER_INIT (map->data + 15,
295 if (!read_golomb (&br, sps_id))
302 parse_pps (GstMapInfo * map, guint32 * sps_id, guint32 * pps_id)
303 { /* To parse picture_parameter_set_id */
304 GstBitReader br = GST_BIT_READER_INIT (map->data + 2,
310 if (!read_golomb (&br, pps_id))
312 if (!read_golomb (&br, sps_id))
320 gst_rtp_h265_set_src_caps (GstRtpH265Depay * rtph265depay)
325 if (!rtph265depay->byte_stream &&
326 (!rtph265depay->new_codec_data ||
327 rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0
328 || rtph265depay->pps->len == 0))
331 srccaps = gst_caps_new_simple ("video/x-h265",
332 "stream-format", G_TYPE_STRING,
333 rtph265depay->stream_format,
334 "alignment", G_TYPE_STRING, rtph265depay->merge ? "au" : "nal", NULL);
336 if (!rtph265depay->byte_stream) {
338 GstBuffer *codec_data;
341 guint num_vps = rtph265depay->vps->len;
342 guint num_sps = rtph265depay->sps->len;
343 guint num_pps = rtph265depay->pps->len;
344 GstMapInfo map, nalmap;
347 guint8 num_arrays = 0;
352 guint32 max_sub_layers_minus1, temporal_id_nesting_flag, chroma_format_idc,
353 bit_depth_luma_minus8, bit_depth_chroma_minus8,
354 min_spatial_segmentation_idc;
356 /* Fixme: Current implementation is not embedding SEI in codec_data */
361 /* start with 23 bytes header */
364 num_arrays = (num_vps > 0) + (num_sps > 0) + (num_pps > 0);
367 /* add size of vps, sps & pps */
368 for (i = 0; i < num_vps; i++)
369 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
370 for (i = 0; i < num_sps; i++)
371 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
372 for (i = 0; i < num_pps; i++)
373 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
375 GST_DEBUG_OBJECT (rtph265depay,
376 "constructing codec_data: num_vps =%d num_sps=%d, num_pps=%d", num_vps,
379 codec_data = gst_buffer_new_and_alloc (len);
380 g_debug ("alloc_len: %u", len);
381 gst_buffer_map (codec_data, &map, GST_MAP_READWRITE);
384 memset (data, 0, map.size);
386 /* Parsing sps to get the info required further on */
388 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
391 max_sub_layers_minus1 = ((nalmap.data[2]) >> 1) & 0x07;
392 temporal_id_nesting_flag = nalmap.data[2] & 0x01;
394 gst_bit_reader_init (&br, nalmap.data + 15, nalmap.size - 15);
396 read_golomb (&br, &tmp); /* sps_seq_parameter_set_id */
397 read_golomb (&br, &chroma_format_idc); /* chroma_format_idc */
399 if (chroma_format_idc == 3)
401 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* separate_colour_plane_flag */
403 read_golomb (&br, &tmp); /* pic_width_in_luma_samples */
404 read_golomb (&br, &tmp); /* pic_height_in_luma_samples */
406 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* conformance_window_flag */
408 read_golomb (&br, &tmp); /* conf_win_left_offset */
409 read_golomb (&br, &tmp); /* conf_win_right_offset */
410 read_golomb (&br, &tmp); /* conf_win_top_offset */
411 read_golomb (&br, &tmp); /* conf_win_bottom_offset */
414 read_golomb (&br, &bit_depth_luma_minus8); /* bit_depth_luma_minus8 */
415 read_golomb (&br, &bit_depth_chroma_minus8); /* bit_depth_chroma_minus8 */
417 GST_DEBUG_OBJECT (rtph265depay,
418 "Ignoring min_spatial_segmentation for now (assuming zero)");
420 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 */
424 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
426 /* HEVCDecoderConfigurationVersion = 1 */
429 /* Copy from profile_tier_level (Rec. ITU-T H.265 (04/2013) section 7.3.3
431 * profile_space | tier_flat | profile_idc |
432 * profile_compatibility_flags | constraint_indicator_flags |
433 * level_idc | progressive_source_flag | interlaced_source_flag
434 * non_packed_constraint_flag | frame_only_constraint_flag
435 * reserved_zero_44bits | level_idc */
436 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
438 for (i = 0; i < 12; i++)
439 data[i + 1] = nalmap.data[i];
440 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
442 /* min_spatial_segmentation_idc */
443 GST_WRITE_UINT16_BE (data + 13, min_spatial_segmentation_idc);
445 data[15] = 0xfc; /* keeping parrallelismType as zero (unknown) */
446 data[16] = 0xfc | chroma_format_idc;
447 data[17] = 0xf8 | bit_depth_luma_minus8;
448 data[18] = 0xf8 | bit_depth_chroma_minus8;
449 data[19] = 0x00; /* keep avgFrameRate as unspecified */
450 data[20] = 0x00; /* keep avgFrameRate as unspecified */
451 /* constFrameRate(2 bits): 0, stream may or may not be of constant framerate
452 * numTemporalLayers (3 bits): number of temporal layers, value from SPS
453 * TemporalIdNested (1 bit): sps_temporal_id_nesting_flag from SPS
454 * lengthSizeMinusOne (2 bits): plus 1 indicates the length of the NALUnitLength */
456 0x00 | ((max_sub_layers_minus1 +
457 1) << 3) | (temporal_id_nesting_flag << 2) | (nl - 1);
458 GST_WRITE_UINT8 (data + 22, num_arrays); /* numOfArrays */
464 /* array_completeness | reserved_zero bit | nal_unit_type */
465 data[0] = 0x00 | 0x20;
468 GST_WRITE_UINT16_BE (data, num_vps);
471 for (i = 0; i < num_vps; i++) {
473 gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
474 GST_WRITE_UINT16_BE (data, nal_size);
475 gst_buffer_extract (g_ptr_array_index (rtph265depay->vps, i), 0,
477 data += 2 + nal_size;
478 GST_DEBUG_OBJECT (rtph265depay, "Copied VPS %d of length %u", i,
485 /* array_completeness | reserved_zero bit | nal_unit_type */
486 data[0] = 0x00 | 0x21;
489 GST_WRITE_UINT16_BE (data, num_sps);
492 for (i = 0; i < num_sps; i++) {
494 gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
495 GST_WRITE_UINT16_BE (data, nal_size);
496 gst_buffer_extract (g_ptr_array_index (rtph265depay->sps, i), 0,
498 data += 2 + nal_size;
499 GST_DEBUG_OBJECT (rtph265depay, "Copied SPS %d of length %u", i,
506 /* array_completeness | reserved_zero bit | nal_unit_type */
507 data[0] = 0x00 | 0x22;
510 GST_WRITE_UINT16_BE (data, num_pps);
513 for (i = 0; i < num_pps; i++) {
515 gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
516 GST_WRITE_UINT16_BE (data, nal_size);
517 gst_buffer_extract (g_ptr_array_index (rtph265depay->pps, i), 0,
519 data += 2 + nal_size;
520 GST_DEBUG_OBJECT (rtph265depay, "Copied PPS %d of length %u", i,
525 new_size = data - map.data;
526 gst_buffer_unmap (codec_data, &map);
527 gst_buffer_set_size (codec_data, new_size);
529 gst_caps_set_simple (srccaps,
530 "codec_data", GST_TYPE_BUFFER, codec_data, NULL);
531 gst_buffer_unref (codec_data);
534 if (gst_pad_has_current_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay))) {
536 gst_pad_get_current_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay));
538 /* Only update the caps if they are not equal. For
539 * AVC we don't update caps if only the codec_data
540 * changes. This is the same behaviour as in h264parse
541 * and gstrtph264depay
543 if (rtph265depay->byte_stream) {
544 if (!gst_caps_is_equal (srccaps, old_caps))
546 gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
551 GstCaps *tmp_caps = gst_caps_copy (srccaps);
552 GstStructure *old_s, *tmp_s;
554 old_s = gst_caps_get_structure (old_caps, 0);
555 tmp_s = gst_caps_get_structure (tmp_caps, 0);
556 if (gst_structure_has_field (old_s, "codec_data"))
557 gst_structure_set_value (tmp_s, "codec_data",
558 gst_structure_get_value (old_s, "codec_data"));
560 if (!gst_caps_is_equal (old_caps, tmp_caps))
562 gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
567 gst_caps_unref (tmp_caps);
571 gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
575 gst_caps_unref (srccaps);
577 /* Insert SPS and PPS into the stream on next opportunity */
578 if (rtph265depay->sps->len > 0 || rtph265depay->pps->len > 0) {
580 GstBuffer *codec_data;
585 for (i = 0; i < rtph265depay->sps->len; i++) {
586 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
589 for (i = 0; i < rtph265depay->pps->len; i++) {
590 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
593 codec_data = gst_buffer_new_and_alloc (len);
594 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
597 for (i = 0; i < rtph265depay->sps->len; i++) {
598 GstBuffer *sps_buf = g_ptr_array_index (rtph265depay->sps, i);
599 guint sps_size = gst_buffer_get_size (sps_buf);
601 if (rtph265depay->byte_stream)
602 memcpy (data, sync_bytes, sizeof (sync_bytes));
604 GST_WRITE_UINT32_BE (data, sps_size);
605 gst_buffer_extract (sps_buf, 0, data + 4, -1);
606 data += 4 + sps_size;
609 for (i = 0; i < rtph265depay->pps->len; i++) {
610 GstBuffer *pps_buf = g_ptr_array_index (rtph265depay->pps, i);
611 guint pps_size = gst_buffer_get_size (pps_buf);
613 if (rtph265depay->byte_stream)
614 memcpy (data, sync_bytes, sizeof (sync_bytes));
616 GST_WRITE_UINT32_BE (data, pps_size);
617 gst_buffer_extract (pps_buf, 0, data + 4, -1);
618 data += 4 + pps_size;
621 gst_buffer_unmap (codec_data, &map);
622 if (rtph265depay->codec_data)
623 gst_buffer_unref (rtph265depay->codec_data);
624 rtph265depay->codec_data = codec_data;
628 rtph265depay->new_codec_data = FALSE;
634 gst_rtp_h265_add_vps_sps_pps (GstElement * rtph265, GPtrArray * vps_array,
635 GPtrArray * sps_array, GPtrArray * pps_array, GstBuffer * nal)
641 gst_buffer_map (nal, &map, GST_MAP_READ);
643 type = (map.data[0] >> 1) & 0x3f;
645 if (type == GST_H265_VPS_NUT) {
646 guint32 vps_id = (map.data[2] >> 4) & 0x0f;
648 for (i = 0; i < vps_array->len; i++) {
649 GstBuffer *vps = g_ptr_array_index (vps_array, i);
653 gst_buffer_map (vps, &vpsmap, GST_MAP_READ);
654 tmp_vps_id = (vpsmap.data[2] >> 4) & 0x0f;
656 if (vps_id == tmp_vps_id) {
657 if (map.size == vpsmap.size &&
658 memcmp (map.data, vpsmap.data, vpsmap.size) == 0) {
659 GST_LOG_OBJECT (rtph265, "Unchanged VPS %u, not updating", vps_id);
660 gst_buffer_unmap (vps, &vpsmap);
663 gst_buffer_unmap (vps, &vpsmap);
664 g_ptr_array_remove_index_fast (vps_array, i);
665 g_ptr_array_add (vps_array, nal);
666 GST_LOG_OBJECT (rtph265, "Modified VPS %u, replacing", vps_id);
670 gst_buffer_unmap (vps, &vpsmap);
672 GST_LOG_OBJECT (rtph265, "Adding new VPS %u", vps_id);
673 g_ptr_array_add (vps_array, nal);
674 } else if (type == GST_H265_SPS_NUT) {
677 if (!parse_sps (&map, &sps_id)) {
678 GST_WARNING_OBJECT (rtph265, "Invalid SPS,"
679 " can't parse seq_parameter_set_id");
683 for (i = 0; i < sps_array->len; i++) {
684 GstBuffer *sps = g_ptr_array_index (sps_array, i);
688 gst_buffer_map (sps, &spsmap, GST_MAP_READ);
689 parse_sps (&spsmap, &tmp_sps_id);
691 if (sps_id == tmp_sps_id) {
692 if (map.size == spsmap.size &&
693 memcmp (map.data, spsmap.data, spsmap.size) == 0) {
694 GST_LOG_OBJECT (rtph265, "Unchanged SPS %u, not updating", sps_id);
695 gst_buffer_unmap (sps, &spsmap);
698 gst_buffer_unmap (sps, &spsmap);
699 g_ptr_array_remove_index_fast (sps_array, i);
700 g_ptr_array_add (sps_array, nal);
701 GST_LOG_OBJECT (rtph265, "Modified SPS %u, replacing", sps_id);
705 gst_buffer_unmap (sps, &spsmap);
707 GST_LOG_OBJECT (rtph265, "Adding new SPS %u", sps_id);
708 g_ptr_array_add (sps_array, nal);
709 } else if (type == GST_H265_PPS_NUT) {
713 if (!parse_pps (&map, &sps_id, &pps_id)) {
714 GST_WARNING_OBJECT (rtph265, "Invalid PPS,"
715 " can't parse seq_parameter_set_id or pic_parameter_set_id");
719 for (i = 0; i < pps_array->len; i++) {
720 GstBuffer *pps = g_ptr_array_index (pps_array, i);
726 gst_buffer_map (pps, &ppsmap, GST_MAP_READ);
727 parse_pps (&ppsmap, &tmp_sps_id, &tmp_pps_id);
729 if (pps_id == tmp_pps_id) {
730 if (map.size == ppsmap.size &&
731 memcmp (map.data, ppsmap.data, ppsmap.size) == 0) {
732 GST_LOG_OBJECT (rtph265, "Unchanged PPS %u:%u, not updating", sps_id,
734 gst_buffer_unmap (pps, &ppsmap);
737 gst_buffer_unmap (pps, &ppsmap);
738 g_ptr_array_remove_index_fast (pps_array, i);
739 g_ptr_array_add (pps_array, nal);
740 GST_LOG_OBJECT (rtph265, "Modified PPS %u:%u, replacing",
745 gst_buffer_unmap (pps, &ppsmap);
747 GST_LOG_OBJECT (rtph265, "Adding new PPS %u:%i", sps_id, pps_id);
748 g_ptr_array_add (pps_array, nal);
754 gst_buffer_unmap (nal, &map);
759 gst_buffer_unmap (nal, &map);
760 gst_buffer_unref (nal);
767 gst_rtp_h265_depay_add_vps_sps_pps (GstRtpH265Depay * rtph265depay,
770 if (gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265depay),
771 rtph265depay->vps, rtph265depay->sps, rtph265depay->pps, nal))
772 rtph265depay->new_codec_data = TRUE;
776 gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
779 GstStructure *structure = gst_caps_get_structure (caps, 0);
780 GstRtpH265Depay *rtph265depay;
782 GstBuffer *codec_data;
786 rtph265depay = GST_RTP_H265_DEPAY (depayload);
788 if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
790 depayload->clock_rate = clock_rate;
792 /* Base64 encoded, comma separated config NALs */
793 ps = gst_structure_get_string (structure, "sprop-parameter-sets");
795 /* negotiate with downstream w.r.t. output format and alignment */
796 gst_rtp_h265_depay_negotiate (rtph265depay);
798 if (rtph265depay->byte_stream && ps != NULL) {
799 /* for bytestream we only need the parameter sets but we don't error out
800 * when they are not there, we assume they are in the stream. */
805 params = g_strsplit (ps, ",", 0);
807 /* count total number of bytes in base64. Also include the sync bytes in
808 * front of the params. */
810 for (i = 0; params[i]; i++) {
811 len += strlen (params[i]);
812 len += sizeof (sync_bytes);
814 /* we seriously overshoot the length, but it's fine. */
815 codec_data = gst_buffer_new_and_alloc (len);
817 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
820 for (i = 0; params[i]; i++) {
824 GST_DEBUG_OBJECT (depayload, "decoding param %d (%s)", i, params[i]);
825 memcpy (ptr, sync_bytes, sizeof (sync_bytes));
826 ptr += sizeof (sync_bytes);
828 g_base64_decode_step (params[i], strlen (params[i]), ptr, &state,
830 GST_DEBUG_OBJECT (depayload, "decoded %d bytes", len);
831 total += len + sizeof (sync_bytes);
834 gst_buffer_unmap (codec_data, &map);
835 gst_buffer_resize (codec_data, 0, total);
838 /* keep the codec_data, we need to send it as the first buffer. We cannot
839 * push it in the adapter because the adapter might be flushed on discont.
841 if (rtph265depay->codec_data)
842 gst_buffer_unref (rtph265depay->codec_data);
843 rtph265depay->codec_data = codec_data;
844 } else if (!rtph265depay->byte_stream) {
849 goto incomplete_caps;
851 params = g_strsplit (ps, ",", 0);
853 GST_DEBUG_OBJECT (depayload, "we have %d params", g_strv_length (params));
855 /* start with 23 bytes header */
856 for (i = 0; params[i]; i++) {
863 nal_len = strlen (params[i]);
864 nal = gst_buffer_new_and_alloc (nal_len);
865 gst_buffer_map (nal, &nalmap, GST_MAP_READWRITE);
868 g_base64_decode_step (params[i], nal_len, nalmap.data, &state, &save);
870 GST_DEBUG_OBJECT (depayload, "adding param %d as %s", i,
871 (((nalmap.data[0] >> 1) & 0x3f) ==
872 32) ? "VPS" : (((nalmap.data[0] >> 1) & 0x3f) ==
873 33) ? "SPS" : "PPS");
875 gst_buffer_unmap (nal, &nalmap);
876 gst_buffer_set_size (nal, nal_len);
878 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay, nal);
882 if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0)
883 goto incomplete_caps;
886 return gst_rtp_h265_set_src_caps (rtph265depay);
891 GST_DEBUG_OBJECT (depayload, "we have incomplete caps,"
892 " doing setcaps later");
898 gst_rtp_h265_complete_au (GstRtpH265Depay * rtph265depay,
899 GstClockTime * out_timestamp, gboolean * out_keyframe)
904 /* we had a picture in the adapter and we completed it */
905 GST_DEBUG_OBJECT (rtph265depay, "taking completed AU");
906 outsize = gst_adapter_available (rtph265depay->picture_adapter);
907 outbuf = gst_adapter_take_buffer (rtph265depay->picture_adapter, outsize);
909 *out_timestamp = rtph265depay->last_ts;
910 *out_keyframe = rtph265depay->last_keyframe;
912 rtph265depay->last_keyframe = FALSE;
913 rtph265depay->picture_start = FALSE;
918 /* VPS/SPS/PPS/RADL/TSA/RASL/IDR/CRA is considered key, all others DELTA;
919 * so downstream waiting for keyframe can pick up at VPS/SPS/PPS/IDR */
921 #define NAL_TYPE_IS_PARAMETER_SET(nt) ( ((nt) == GST_H265_VPS_NUT)\
922 || ((nt) == GST_H265_SPS_NUT)\
923 || ((nt) == GST_H265_PPS_NUT) )
925 #define NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt) ( ((nt) == GST_H265_NAL_SLICE_TRAIL_N)\
926 || ((nt) == GST_H265_NAL_SLICE_TRAIL_R)\
927 || ((nt) == GST_H265_NAL_SLICE_TSA_N)\
928 || ((nt) == GST_H265_NAL_SLICE_TSA_R)\
929 || ((nt) == GST_H265_NAL_SLICE_STSA_N)\
930 || ((nt) == GST_H265_NAL_SLICE_STSA_R)\
931 || ((nt) == GST_H265_NAL_SLICE_RASL_N)\
932 || ((nt) == GST_H265_NAL_SLICE_RASL_R)\
933 || ((nt) == GST_H265_NAL_SLICE_BLA_W_LP)\
934 || ((nt) == GST_H265_NAL_SLICE_BLA_W_RADL)\
935 || ((nt) == GST_H265_NAL_SLICE_BLA_N_LP)\
936 || ((nt) == GST_H265_NAL_SLICE_IDR_W_RADL)\
937 || ((nt) == GST_H265_NAL_SLICE_IDR_N_LP)\
938 || ((nt) == GST_H265_NAL_SLICE_CRA_NUT) )
940 #define NAL_TYPE_IS_KEY(nt) (NAL_TYPE_IS_PARAMETER_SET(nt) || NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt))
943 foreach_metadata_copy (GstBuffer * inbuf, GstMeta ** meta, gpointer user_data)
945 CopyMetaData *data = user_data;
946 GstElement *element = data->element;
947 GstBuffer *outbuf = data->outbuf;
948 const GstMetaInfo *info = (*meta)->info;
949 const gchar *const *tags = gst_meta_api_type_get_tags (info->api);
951 if (!tags || (g_strv_length ((gchar **) tags) == 1
952 && gst_meta_api_type_has_tag (info->api,
953 g_quark_from_string (GST_META_TAG_VIDEO_STR)))) {
954 GstMetaTransformCopy copy_data = { FALSE, 0, -1 };
955 GST_DEBUG_OBJECT (element, "copy metadata %s", g_type_name (info->api));
956 /* simply copy then */
957 info->transform_func (outbuf, *meta, inbuf,
958 _gst_meta_transform_copy, ©_data);
960 GST_DEBUG_OBJECT (element, "not copying metadata %s",
961 g_type_name (info->api));
967 /* TODO: Should probably make copy_tag an array at some point */
969 gst_rtp_copy_meta (GstElement * element, GstBuffer * outbuf, GstBuffer * inbuf,
972 CopyMetaData data = { element, outbuf, copy_tag };
974 gst_buffer_foreach_meta (inbuf, foreach_metadata_copy, &data);
978 foreach_metadata_drop (GstBuffer * inbuf, GstMeta ** meta, gpointer user_data)
980 GstRtpH265Depay *depay = user_data;
981 const GstMetaInfo *info = (*meta)->info;
982 const gchar *const *tags = gst_meta_api_type_get_tags (info->api);
984 if (!tags || (g_strv_length ((gchar **) tags) == 1
985 && gst_meta_api_type_has_tag (info->api,
986 g_quark_from_string (GST_META_TAG_VIDEO_STR)))) {
987 GST_DEBUG_OBJECT (depay, "keeping metadata %s", g_type_name (info->api));
989 GST_DEBUG_OBJECT (depay, "dropping metadata %s", g_type_name (info->api));
997 gst_rtp_h265_depay_handle_nal (GstRtpH265Depay * rtph265depay, GstBuffer * nal,
998 GstClockTime in_timestamp, gboolean marker)
1000 GstRTPBaseDepayload *depayload = GST_RTP_BASE_DEPAYLOAD (rtph265depay);
1003 GstBuffer *outbuf = NULL;
1004 GstClockTime out_timestamp;
1005 gboolean keyframe, out_keyframe;
1007 gst_buffer_map (nal, &map, GST_MAP_READ);
1008 if (G_UNLIKELY (map.size < 5))
1011 nal_type = (map.data[4] >> 1) & 0x3f;
1012 GST_DEBUG_OBJECT (rtph265depay, "handle NAL type %d (RTP marker bit %d)",
1015 keyframe = NAL_TYPE_IS_KEY (nal_type);
1017 out_keyframe = keyframe;
1018 out_timestamp = in_timestamp;
1020 if (!rtph265depay->byte_stream) {
1021 if (NAL_TYPE_IS_PARAMETER_SET (nal_type)) {
1022 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay,
1023 gst_buffer_copy_region (nal, GST_BUFFER_COPY_ALL,
1024 4, gst_buffer_get_size (nal) - 4));
1025 gst_buffer_unmap (nal, &map);
1026 gst_buffer_unref (nal);
1028 } else if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0) {
1029 /* Down push down any buffer in non-bytestream mode if the SPS/PPS haven't
1032 gst_pad_push_event (GST_RTP_BASE_DEPAYLOAD_SINKPAD (depayload),
1033 gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
1034 gst_structure_new ("GstForceKeyUnit",
1035 "all-headers", G_TYPE_BOOLEAN, TRUE, NULL)));
1036 gst_buffer_unmap (nal, &map);
1037 gst_buffer_unref (nal);
1041 if (rtph265depay->new_codec_data &&
1042 rtph265depay->sps->len > 0 && rtph265depay->pps->len > 0)
1043 gst_rtp_h265_set_src_caps (rtph265depay);
1046 if (rtph265depay->merge) {
1047 gboolean start = FALSE, complete = FALSE;
1049 /* marker bit isn't mandatory so in the following code we try to detect
1050 * an AU boundary (see H.265 spec section 7.4.2.4.4) */
1053 if (NAL_TYPE_IS_CODED_SLICE_SEGMENT (nal_type)) {
1054 /* 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 */
1056 if (((map.data[6] >> 7) & 0x01) == 1) {
1060 } else if ((nal_type >= 32 && nal_type <= 35)
1061 || nal_type == 39 || (nal_type >= 41 && nal_type <= 44)
1062 || (nal_type >= 48 && nal_type <= 55)) {
1063 /* VPS, SPS, PPS, SEI, ... terminate an access unit */
1066 GST_DEBUG_OBJECT (depayload, "start %d, complete %d", start, complete);
1068 if (complete && rtph265depay->picture_start)
1069 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1072 /* add to adapter */
1073 gst_buffer_unmap (nal, &map);
1075 GST_DEBUG_OBJECT (depayload, "adding NAL to picture adapter");
1076 gst_adapter_push (rtph265depay->picture_adapter, nal);
1077 rtph265depay->last_ts = in_timestamp;
1078 rtph265depay->last_keyframe |= keyframe;
1079 rtph265depay->picture_start |= start;
1082 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1085 /* no merge, output is input nal */
1086 GST_DEBUG_OBJECT (depayload, "using NAL as output");
1088 gst_buffer_unmap (nal, &map);
1092 /* prepend codec_data */
1093 if (rtph265depay->codec_data) {
1094 GST_DEBUG_OBJECT (depayload, "prepending codec_data");
1095 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay),
1096 rtph265depay->codec_data, outbuf,
1097 g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1098 outbuf = gst_buffer_append (rtph265depay->codec_data, outbuf);
1099 rtph265depay->codec_data = NULL;
1100 out_keyframe = TRUE;
1102 outbuf = gst_buffer_make_writable (outbuf);
1104 gst_buffer_foreach_meta (outbuf, foreach_metadata_drop, depayload);
1106 GST_BUFFER_PTS (outbuf) = out_timestamp;
1109 GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1111 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1119 GST_WARNING_OBJECT (depayload, "dropping short NAL");
1120 gst_buffer_unmap (nal, &map);
1121 gst_buffer_unref (nal);
1127 gst_rtp_h265_push_fragmentation_unit (GstRtpH265Depay * rtph265depay,
1134 outsize = gst_adapter_available (rtph265depay->adapter);
1135 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
1137 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1138 GST_DEBUG_OBJECT (rtph265depay, "output %d bytes", outsize);
1140 if (rtph265depay->byte_stream) {
1141 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1143 goto not_implemented;
1145 gst_buffer_unmap (outbuf, &map);
1147 rtph265depay->current_fu_type = 0;
1149 outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf,
1150 rtph265depay->fu_timestamp, rtph265depay->fu_marker);
1152 if (send && outbuf) {
1153 gst_rtp_base_depayload_push (GST_RTP_BASE_DEPAYLOAD (rtph265depay), outbuf);
1160 GST_ERROR_OBJECT (rtph265depay,
1161 ("Only bytestream format is currently supported."));
1162 gst_buffer_unmap (outbuf, &map);
1168 gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
1170 GstRtpH265Depay *rtph265depay;
1171 GstBuffer *outbuf = NULL;
1172 guint8 nal_unit_type;
1174 rtph265depay = GST_RTP_H265_DEPAY (depayload);
1176 /* flush remaining data on discont */
1177 if (GST_BUFFER_IS_DISCONT (rtp->buffer)) {
1178 gst_adapter_clear (rtph265depay->adapter);
1179 rtph265depay->wait_start = TRUE;
1180 rtph265depay->current_fu_type = 0;
1188 guint outsize, nalu_size;
1189 GstClockTime timestamp;
1191 guint8 nuh_layer_id, nuh_temporal_id_plus1;
1195 gboolean donl_present = FALSE;
1198 timestamp = GST_BUFFER_PTS (rtp->buffer);
1200 payload_len = gst_rtp_buffer_get_payload_len (rtp);
1201 payload = gst_rtp_buffer_get_payload (rtp);
1202 marker = gst_rtp_buffer_get_marker (rtp);
1204 GST_DEBUG_OBJECT (rtph265depay, "receiving %d bytes", payload_len);
1206 if (payload_len == 0)
1209 /* +---------------+---------------+
1210 * |0|1|2|3|4|5|6|7|0|1|2|3|4|5|6|7|
1211 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1212 * |F| Type | LayerId | TID |
1213 * +-------------+-----------------+
1218 nal_unit_type = (payload[0] >> 1) & 0x3f;
1219 nuh_layer_id = ((payload[0] & 0x01) << 5) | (payload[1] >> 3); /* should be zero for now but this could change in future HEVC extensions */
1220 nuh_temporal_id_plus1 = payload[1] & 0x03;
1222 /* At least two byte header with type */
1225 GST_DEBUG_OBJECT (rtph265depay,
1226 "NAL header nal_unit_type %d, nuh_temporal_id_plus1 %d", nal_unit_type,
1227 nuh_temporal_id_plus1);
1229 GST_FIXME_OBJECT (rtph265depay, "Assuming DONL field is not present");
1231 /* FIXME - assuming DONL field is not present for now */
1232 /*donl_present = (tx-mode == "MST") || (sprop-max-don-diff > 0); */
1234 /* If FU unit was being processed, but the current nal is of a different
1235 * type. Assume that the remote payloader is buggy (didn't set the end bit
1236 * when the FU ended) and send out what we gathered thusfar */
1237 if (G_UNLIKELY (rtph265depay->current_fu_type != 0 &&
1238 nal_unit_type != rtph265depay->current_fu_type))
1239 gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE);
1241 switch (nal_unit_type) {
1244 GST_DEBUG_OBJECT (rtph265depay, "Processing aggregation packet");
1246 /* Aggregation packet (section 4.7) */
1248 /* An example of an AP packet containing two aggregation units
1249 without the DONL and DOND fields
1252 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
1253 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1255 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1256 | PayloadHdr (Type=48) | NALU 1 Size |
1257 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1259 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ NALU 1 Data |
1262 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1263 | . . . | NALU 2 Size | NALU 2 HDR |
1264 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1266 +-+-+-+-+-+-+-+-+ NALU 2 Data |
1268 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1269 | :...OPTIONAL RTP padding |
1270 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1274 payload += header_len;
1275 payload_len -= header_len;
1277 rtph265depay->wait_start = FALSE;
1281 goto not_implemented_donl_present;
1284 while (payload_len > 2) {
1286 nalu_size = (payload[0] << 8) | payload[1];
1288 /* dont include nalu_size */
1289 if (nalu_size > (payload_len - 2))
1290 nalu_size = payload_len - 2;
1292 outsize = nalu_size + sizeof (sync_bytes);
1293 outbuf = gst_buffer_new_and_alloc (outsize);
1295 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1296 if (rtph265depay->byte_stream) {
1297 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1299 goto not_implemented;
1302 /* strip NALU size */
1306 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1307 gst_buffer_unmap (outbuf, &map);
1309 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1310 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1313 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1316 gst_adapter_push (rtph265depay->adapter, outbuf);
1318 payload += nalu_size;
1319 payload_len -= nalu_size;
1322 outsize = gst_adapter_available (rtph265depay->adapter);
1324 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
1326 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1333 GST_DEBUG_OBJECT (rtph265depay, "Processing Fragmentation Unit");
1335 /* Fragmentation units (FUs) Section 4.8 */
1337 /* The structure of a Fragmentation Unit (FU)
1339 * 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
1340 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1341 | PayloadHdr (Type=49) | FU header | DONL (cond) |
1342 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-|
1347 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1348 | :...OPTIONAL RTP padding |
1349 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1355 payload += header_len;
1356 payload_len -= header_len;
1358 /* processing FU header */
1359 S = (payload[0] & 0x80) == 0x80;
1360 E = (payload[0] & 0x40) == 0x40;
1362 GST_DEBUG_OBJECT (rtph265depay,
1363 "FU header with S %d, E %d, nal_unit_type %d", S, E,
1366 if (rtph265depay->wait_start && !S)
1371 goto not_implemented_donl_present;
1376 GST_DEBUG_OBJECT (rtph265depay, "Start of Fragmentation Unit");
1378 /* If a new FU unit started, while still processing an older one.
1379 * Assume that the remote payloader is buggy (doesn't set the end
1380 * bit) and send out what we've gathered thusfar */
1381 if (G_UNLIKELY (rtph265depay->current_fu_type != 0))
1382 gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE);
1384 rtph265depay->current_fu_type = nal_unit_type;
1385 rtph265depay->fu_timestamp = timestamp;
1387 rtph265depay->wait_start = FALSE;
1389 /* reconstruct NAL header */
1391 ((payload[0] & 0x3f) << 9) | (nuh_layer_id << 3) |
1392 nuh_temporal_id_plus1;
1394 /* go back one byte so we can copy the payload + two bytes more in the front which
1395 * will be overwritten by the nal_header
1400 nalu_size = payload_len;
1401 outsize = nalu_size + sizeof (sync_bytes);
1402 outbuf = gst_buffer_new_and_alloc (outsize);
1404 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1405 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1406 map.data[sizeof (sync_bytes)] = nal_header >> 8;
1407 map.data[sizeof (sync_bytes) + 1] = nal_header & 0xff;
1408 gst_buffer_unmap (outbuf, &map);
1410 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1411 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1413 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1415 /* and assemble in the adapter */
1416 gst_adapter_push (rtph265depay->adapter, outbuf);
1419 GST_DEBUG_OBJECT (rtph265depay,
1420 "Following part of Fragmentation Unit");
1422 /* strip off FU header byte */
1426 outsize = payload_len;
1427 outbuf = gst_buffer_new_and_alloc (outsize);
1428 gst_buffer_fill (outbuf, 0, payload, outsize);
1430 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1431 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1433 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1435 /* and assemble in the adapter */
1436 gst_adapter_push (rtph265depay->adapter, outbuf);
1440 rtph265depay->fu_marker = marker;
1442 /* if NAL unit ends, flush the adapter */
1444 outbuf = gst_rtp_h265_push_fragmentation_unit (rtph265depay, FALSE);
1445 GST_DEBUG_OBJECT (rtph265depay, "End of Fragmentation Unit");
1450 goto not_implemented; /* PACI packets Section 4.9 */
1453 rtph265depay->wait_start = FALSE;
1455 /* All other cases: Single NAL unit packet Section 4.6 */
1456 /* the entire payload is the output buffer */
1460 goto not_implemented_donl_present;
1463 nalu_size = payload_len;
1464 outsize = nalu_size + sizeof (sync_bytes);
1465 outbuf = gst_buffer_new_and_alloc (outsize);
1467 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1468 if (rtph265depay->byte_stream) {
1469 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1471 goto not_implemented;
1473 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1474 gst_buffer_unmap (outbuf, &map);
1476 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1477 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1479 outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1491 GST_DEBUG_OBJECT (rtph265depay, "empty packet");
1496 GST_DEBUG_OBJECT (rtph265depay, "waiting for start");
1500 not_implemented_donl_present:
1502 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1503 (NULL), ("DONL field present not supported yet"));
1509 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1510 (NULL), ("NAL unit type %d not supported yet", nal_unit_type));
1516 gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay, GstEvent * event)
1518 GstRtpH265Depay *rtph265depay;
1520 rtph265depay = GST_RTP_H265_DEPAY (depay);
1522 switch (GST_EVENT_TYPE (event)) {
1523 case GST_EVENT_FLUSH_STOP:
1524 gst_rtp_h265_depay_reset (rtph265depay);
1531 GST_RTP_BASE_DEPAYLOAD_CLASS (parent_class)->handle_event (depay, event);
1534 static GstStateChangeReturn
1535 gst_rtp_h265_depay_change_state (GstElement * element,
1536 GstStateChange transition)
1538 GstRtpH265Depay *rtph265depay;
1539 GstStateChangeReturn ret;
1541 rtph265depay = GST_RTP_H265_DEPAY (element);
1543 switch (transition) {
1544 case GST_STATE_CHANGE_NULL_TO_READY:
1546 case GST_STATE_CHANGE_READY_TO_PAUSED:
1547 gst_rtp_h265_depay_reset (rtph265depay);
1553 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1555 switch (transition) {
1556 case GST_STATE_CHANGE_READY_TO_NULL:
1565 gst_rtp_h265_depay_plugin_init (GstPlugin * plugin)
1567 GST_DEBUG_CATEGORY_INIT (rtph265depay_debug, "rtph265depay", 0,
1568 "H265 Video RTP Depayloader");
1570 return gst_element_register (plugin, "rtph265depay",
1571 GST_RANK_SECONDARY, GST_TYPE_RTP_H265_DEPAY);