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)
162 gst_adapter_clear (rtph265depay->adapter);
163 rtph265depay->wait_start = TRUE;
164 gst_adapter_clear (rtph265depay->picture_adapter);
165 rtph265depay->picture_start = FALSE;
166 rtph265depay->last_keyframe = FALSE;
167 rtph265depay->last_ts = 0;
168 rtph265depay->current_fu_type = 0;
169 rtph265depay->new_codec_data = FALSE;
170 g_ptr_array_set_size (rtph265depay->vps, 0);
171 g_ptr_array_set_size (rtph265depay->sps, 0);
172 g_ptr_array_set_size (rtph265depay->pps, 0);
176 gst_rtp_h265_depay_finalize (GObject * object)
178 GstRtpH265Depay *rtph265depay;
180 rtph265depay = GST_RTP_H265_DEPAY (object);
182 if (rtph265depay->codec_data)
183 gst_buffer_unref (rtph265depay->codec_data);
185 g_free (rtph265depay->stream_format);
187 g_object_unref (rtph265depay->adapter);
188 g_object_unref (rtph265depay->picture_adapter);
190 g_ptr_array_free (rtph265depay->vps, TRUE);
191 g_ptr_array_free (rtph265depay->sps, TRUE);
192 g_ptr_array_free (rtph265depay->pps, TRUE);
194 G_OBJECT_CLASS (parent_class)->finalize (object);
198 gst_rtp_h265_depay_negotiate (GstRtpH265Depay * rtph265depay)
201 gint byte_stream = -1;
205 gst_pad_get_allowed_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay));
207 GST_DEBUG_OBJECT (rtph265depay, "allowed caps: %" GST_PTR_FORMAT, caps);
210 if (gst_caps_get_size (caps) > 0) {
211 GstStructure *s = gst_caps_get_structure (caps, 0);
212 const gchar *str = NULL;
214 if ((str = gst_structure_get_string (s, "stream-format"))) {
215 g_free (rtph265depay->stream_format);
216 rtph265depay->stream_format = g_strdup (str);
218 if (strcmp (str, "hev1") == 0) {
220 } else if (strcmp (str, "hvc1") == 0) {
222 } else if (strcmp (str, "byte-stream") == 0) {
225 GST_DEBUG_OBJECT (rtph265depay, "unknown stream-format: %s", str);
229 if ((str = gst_structure_get_string (s, "alignment"))) {
230 if (strcmp (str, "au") == 0) {
232 } else if (strcmp (str, "nal") == 0) {
235 GST_DEBUG_OBJECT (rtph265depay, "unknown alignment: %s", str);
239 gst_caps_unref (caps);
242 if (byte_stream != -1) {
243 GST_DEBUG_OBJECT (rtph265depay, "downstream requires byte-stream %d",
245 rtph265depay->byte_stream = byte_stream;
247 GST_DEBUG_OBJECT (rtph265depay, "defaulting to byte-stream %d",
248 DEFAULT_BYTE_STREAM);
249 g_free (rtph265depay->stream_format);
250 rtph265depay->stream_format = g_strdup ("byte-stream");
251 rtph265depay->byte_stream = DEFAULT_BYTE_STREAM;
254 GST_DEBUG_OBJECT (rtph265depay, "downstream requires merge %d", merge);
255 rtph265depay->merge = merge;
257 GST_DEBUG_OBJECT (rtph265depay, "defaulting to merge %d",
258 DEFAULT_ACCESS_UNIT);
259 rtph265depay->merge = DEFAULT_ACCESS_UNIT;
264 parse_sps (GstMapInfo * map, guint32 * sps_id)
265 { /* To parse seq_parameter_set_id */
266 GstBitReader br = GST_BIT_READER_INIT (map->data + 15,
272 if (!gst_rtp_read_golomb (&br, sps_id))
279 parse_pps (GstMapInfo * map, guint32 * sps_id, guint32 * pps_id)
280 { /* To parse picture_parameter_set_id */
281 GstBitReader br = GST_BIT_READER_INIT (map->data + 2,
287 if (!gst_rtp_read_golomb (&br, pps_id))
289 if (!gst_rtp_read_golomb (&br, sps_id))
297 gst_rtp_h265_set_src_caps (GstRtpH265Depay * rtph265depay)
303 if (!rtph265depay->byte_stream &&
304 (!rtph265depay->new_codec_data ||
305 rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0
306 || rtph265depay->pps->len == 0))
309 srccaps = gst_caps_new_simple ("video/x-h265",
310 "stream-format", G_TYPE_STRING, rtph265depay->stream_format,
311 "alignment", G_TYPE_STRING, rtph265depay->merge ? "au" : "nal", NULL);
313 if (!rtph265depay->byte_stream) {
314 GstBuffer *codec_data;
317 guint num_vps = rtph265depay->vps->len;
318 guint num_sps = rtph265depay->sps->len;
319 guint num_pps = rtph265depay->pps->len;
320 GstMapInfo map, nalmap;
323 guint8 num_arrays = 0;
328 guint32 max_sub_layers_minus1, temporal_id_nesting_flag, chroma_format_idc,
329 bit_depth_luma_minus8, bit_depth_chroma_minus8,
330 min_spatial_segmentation_idc;
332 /* Fixme: Current implementation is not embedding SEI in codec_data */
337 /* start with 23 bytes header */
340 num_arrays = (num_vps > 0) + (num_sps > 0) + (num_pps > 0);
343 /* add size of vps, sps & pps */
344 for (i = 0; i < num_vps; i++)
345 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
346 for (i = 0; i < num_sps; i++)
347 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
348 for (i = 0; i < num_pps; i++)
349 len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
351 GST_DEBUG_OBJECT (rtph265depay,
352 "constructing codec_data: num_vps =%d num_sps=%d, num_pps=%d", num_vps,
355 codec_data = gst_buffer_new_and_alloc (len);
356 gst_buffer_map (codec_data, &map, GST_MAP_READWRITE);
359 memset (data, 0, map.size);
361 /* Parsing sps to get the info required further on */
363 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
366 max_sub_layers_minus1 = ((nalmap.data[2]) >> 1) & 0x07;
367 temporal_id_nesting_flag = nalmap.data[2] & 0x01;
369 gst_bit_reader_init (&br, nalmap.data + 15, nalmap.size - 15);
371 gst_rtp_read_golomb (&br, &tmp); /* sps_seq_parameter_set_id */
372 gst_rtp_read_golomb (&br, &chroma_format_idc); /* chroma_format_idc */
374 if (chroma_format_idc == 3)
376 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* separate_colour_plane_flag */
378 gst_rtp_read_golomb (&br, &tmp); /* pic_width_in_luma_samples */
379 gst_rtp_read_golomb (&br, &tmp); /* pic_height_in_luma_samples */
381 gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* conformance_window_flag */
383 gst_rtp_read_golomb (&br, &tmp); /* conf_win_left_offset */
384 gst_rtp_read_golomb (&br, &tmp); /* conf_win_right_offset */
385 gst_rtp_read_golomb (&br, &tmp); /* conf_win_top_offset */
386 gst_rtp_read_golomb (&br, &tmp); /* conf_win_bottom_offset */
389 gst_rtp_read_golomb (&br, &bit_depth_luma_minus8); /* bit_depth_luma_minus8 */
390 gst_rtp_read_golomb (&br, &bit_depth_chroma_minus8); /* bit_depth_chroma_minus8 */
392 GST_DEBUG_OBJECT (rtph265depay,
393 "Ignoring min_spatial_segmentation for now (assuming zero)");
395 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 */
399 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
401 /* HEVCDecoderConfigurationVersion = 1 */
404 /* Copy from profile_tier_level (Rec. ITU-T H.265 (04/2013) section 7.3.3
406 * profile_space | tier_flat | profile_idc |
407 * profile_compatibility_flags | constraint_indicator_flags |
408 * level_idc | progressive_source_flag | interlaced_source_flag
409 * non_packed_constraint_flag | frame_only_constraint_flag
410 * reserved_zero_44bits | level_idc */
411 gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap,
413 for (i = 0; i < 12; i++)
414 data[i + 1] = nalmap.data[i];
415 gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap);
417 /* min_spatial_segmentation_idc */
418 GST_WRITE_UINT16_BE (data + 13, min_spatial_segmentation_idc);
420 data[15] = 0xfc; /* keeping parrallelismType as zero (unknown) */
421 data[16] = 0xfc | chroma_format_idc;
422 data[17] = 0xf8 | bit_depth_luma_minus8;
423 data[18] = 0xf8 | bit_depth_chroma_minus8;
424 data[19] = 0x00; /* keep avgFrameRate as unspecified */
425 data[20] = 0x00; /* keep avgFrameRate as unspecified */
426 /* constFrameRate(2 bits): 0, stream may or may not be of constant framerate
427 * numTemporalLayers (3 bits): number of temporal layers, value from SPS
428 * TemporalIdNested (1 bit): sps_temporal_id_nesting_flag from SPS
429 * lengthSizeMinusOne (2 bits): plus 1 indicates the length of the NALUnitLength */
431 0x00 | ((max_sub_layers_minus1 +
432 1) << 3) | (temporal_id_nesting_flag << 2) | (nl - 1);
433 GST_WRITE_UINT8 (data + 22, num_arrays); /* numOfArrays */
439 /* array_completeness | reserved_zero bit | nal_unit_type */
440 data[0] = 0x00 | 0x20;
443 GST_WRITE_UINT16_BE (data, num_vps);
446 for (i = 0; i < num_vps; i++) {
448 gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i));
449 GST_WRITE_UINT16_BE (data, nal_size);
450 gst_buffer_extract (g_ptr_array_index (rtph265depay->vps, i), 0,
452 data += 2 + nal_size;
453 GST_DEBUG_OBJECT (rtph265depay, "Copied VPS %d of length %u", i,
460 /* array_completeness | reserved_zero bit | nal_unit_type */
461 data[0] = 0x00 | 0x21;
464 GST_WRITE_UINT16_BE (data, num_sps);
467 for (i = 0; i < num_sps; i++) {
469 gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
470 GST_WRITE_UINT16_BE (data, nal_size);
471 gst_buffer_extract (g_ptr_array_index (rtph265depay->sps, i), 0,
473 data += 2 + nal_size;
474 GST_DEBUG_OBJECT (rtph265depay, "Copied SPS %d of length %u", i,
481 /* array_completeness | reserved_zero bit | nal_unit_type */
482 data[0] = 0x00 | 0x22;
485 GST_WRITE_UINT16_BE (data, num_pps);
488 for (i = 0; i < num_pps; i++) {
490 gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
491 GST_WRITE_UINT16_BE (data, nal_size);
492 gst_buffer_extract (g_ptr_array_index (rtph265depay->pps, i), 0,
494 data += 2 + nal_size;
495 GST_DEBUG_OBJECT (rtph265depay, "Copied PPS %d of length %u", i,
500 new_size = data - map.data;
501 gst_buffer_unmap (codec_data, &map);
502 gst_buffer_set_size (codec_data, new_size);
504 gst_caps_set_simple (srccaps,
505 "codec_data", GST_TYPE_BUFFER, codec_data, NULL);
506 gst_buffer_unref (codec_data);
510 gst_pad_get_current_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay));
511 if (old_caps != NULL) {
513 /* Only update the caps if they are not equal. For
514 * AVC we don't update caps if only the codec_data
515 * changes. This is the same behaviour as in h264parse
516 * and gstrtph264depay
518 if (rtph265depay->byte_stream) {
519 if (!gst_caps_is_equal (srccaps, old_caps))
521 gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
526 GstCaps *tmp_caps = gst_caps_copy (srccaps);
527 GstStructure *old_s, *tmp_s;
529 old_s = gst_caps_get_structure (old_caps, 0);
530 tmp_s = gst_caps_get_structure (tmp_caps, 0);
531 if (gst_structure_has_field (old_s, "codec_data"))
532 gst_structure_set_value (tmp_s, "codec_data",
533 gst_structure_get_value (old_s, "codec_data"));
535 if (!gst_caps_is_equal (old_caps, tmp_caps))
537 gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
542 gst_caps_unref (tmp_caps);
546 gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay),
550 gst_caps_unref (srccaps);
552 /* Insert SPS and PPS into the stream on next opportunity */
553 if (rtph265depay->sps->len > 0 || rtph265depay->pps->len > 0) {
555 GstBuffer *codec_data;
560 for (i = 0; i < rtph265depay->sps->len; i++) {
561 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i));
564 for (i = 0; i < rtph265depay->pps->len; i++) {
565 len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i));
568 codec_data = gst_buffer_new_and_alloc (len);
569 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
572 for (i = 0; i < rtph265depay->sps->len; i++) {
573 GstBuffer *sps_buf = g_ptr_array_index (rtph265depay->sps, i);
574 guint sps_size = gst_buffer_get_size (sps_buf);
576 if (rtph265depay->byte_stream)
577 memcpy (data, sync_bytes, sizeof (sync_bytes));
579 GST_WRITE_UINT32_BE (data, sps_size);
580 gst_buffer_extract (sps_buf, 0, data + 4, -1);
581 data += 4 + sps_size;
584 for (i = 0; i < rtph265depay->pps->len; i++) {
585 GstBuffer *pps_buf = g_ptr_array_index (rtph265depay->pps, i);
586 guint pps_size = gst_buffer_get_size (pps_buf);
588 if (rtph265depay->byte_stream)
589 memcpy (data, sync_bytes, sizeof (sync_bytes));
591 GST_WRITE_UINT32_BE (data, pps_size);
592 gst_buffer_extract (pps_buf, 0, data + 4, -1);
593 data += 4 + pps_size;
596 gst_buffer_unmap (codec_data, &map);
597 if (rtph265depay->codec_data)
598 gst_buffer_unref (rtph265depay->codec_data);
599 rtph265depay->codec_data = codec_data;
603 rtph265depay->new_codec_data = FALSE;
609 gst_rtp_h265_add_vps_sps_pps (GstElement * rtph265, GPtrArray * vps_array,
610 GPtrArray * sps_array, GPtrArray * pps_array, GstBuffer * nal)
616 gst_buffer_map (nal, &map, GST_MAP_READ);
618 type = (map.data[0] >> 1) & 0x3f;
620 if (type == GST_H265_VPS_NUT) {
621 guint32 vps_id = (map.data[2] >> 4) & 0x0f;
623 for (i = 0; i < vps_array->len; i++) {
624 GstBuffer *vps = g_ptr_array_index (vps_array, i);
628 gst_buffer_map (vps, &vpsmap, GST_MAP_READ);
629 tmp_vps_id = (vpsmap.data[2] >> 4) & 0x0f;
631 if (vps_id == tmp_vps_id) {
632 if (map.size == vpsmap.size &&
633 memcmp (map.data, vpsmap.data, vpsmap.size) == 0) {
634 GST_LOG_OBJECT (rtph265, "Unchanged VPS %u, not updating", vps_id);
635 gst_buffer_unmap (vps, &vpsmap);
638 gst_buffer_unmap (vps, &vpsmap);
639 g_ptr_array_remove_index_fast (vps_array, i);
640 g_ptr_array_add (vps_array, nal);
641 GST_LOG_OBJECT (rtph265, "Modified VPS %u, replacing", vps_id);
645 gst_buffer_unmap (vps, &vpsmap);
647 GST_LOG_OBJECT (rtph265, "Adding new VPS %u", vps_id);
648 g_ptr_array_add (vps_array, nal);
649 } else if (type == GST_H265_SPS_NUT) {
652 if (!parse_sps (&map, &sps_id)) {
653 GST_WARNING_OBJECT (rtph265, "Invalid SPS,"
654 " can't parse seq_parameter_set_id");
658 for (i = 0; i < sps_array->len; i++) {
659 GstBuffer *sps = g_ptr_array_index (sps_array, i);
663 gst_buffer_map (sps, &spsmap, GST_MAP_READ);
664 parse_sps (&spsmap, &tmp_sps_id);
666 if (sps_id == tmp_sps_id) {
667 if (map.size == spsmap.size &&
668 memcmp (map.data, spsmap.data, spsmap.size) == 0) {
669 GST_LOG_OBJECT (rtph265, "Unchanged SPS %u, not updating", sps_id);
670 gst_buffer_unmap (sps, &spsmap);
673 gst_buffer_unmap (sps, &spsmap);
674 g_ptr_array_remove_index_fast (sps_array, i);
675 g_ptr_array_add (sps_array, nal);
676 GST_LOG_OBJECT (rtph265, "Modified SPS %u, replacing", sps_id);
680 gst_buffer_unmap (sps, &spsmap);
682 GST_LOG_OBJECT (rtph265, "Adding new SPS %u", sps_id);
683 g_ptr_array_add (sps_array, nal);
684 } else if (type == GST_H265_PPS_NUT) {
688 if (!parse_pps (&map, &sps_id, &pps_id)) {
689 GST_WARNING_OBJECT (rtph265, "Invalid PPS,"
690 " can't parse seq_parameter_set_id or pic_parameter_set_id");
694 for (i = 0; i < pps_array->len; i++) {
695 GstBuffer *pps = g_ptr_array_index (pps_array, i);
701 gst_buffer_map (pps, &ppsmap, GST_MAP_READ);
702 parse_pps (&ppsmap, &tmp_sps_id, &tmp_pps_id);
704 if (pps_id == tmp_pps_id) {
705 if (map.size == ppsmap.size &&
706 memcmp (map.data, ppsmap.data, ppsmap.size) == 0) {
707 GST_LOG_OBJECT (rtph265, "Unchanged PPS %u:%u, not updating", sps_id,
709 gst_buffer_unmap (pps, &ppsmap);
712 gst_buffer_unmap (pps, &ppsmap);
713 g_ptr_array_remove_index_fast (pps_array, i);
714 g_ptr_array_add (pps_array, nal);
715 GST_LOG_OBJECT (rtph265, "Modified PPS %u:%u, replacing",
720 gst_buffer_unmap (pps, &ppsmap);
722 GST_LOG_OBJECT (rtph265, "Adding new PPS %u:%i", sps_id, pps_id);
723 g_ptr_array_add (pps_array, nal);
729 gst_buffer_unmap (nal, &map);
734 gst_buffer_unmap (nal, &map);
735 gst_buffer_unref (nal);
742 gst_rtp_h265_depay_add_vps_sps_pps (GstRtpH265Depay * rtph265depay,
745 if (gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265depay),
746 rtph265depay->vps, rtph265depay->sps, rtph265depay->pps, nal))
747 rtph265depay->new_codec_data = TRUE;
751 gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
754 GstStructure *structure = gst_caps_get_structure (caps, 0);
755 GstRtpH265Depay *rtph265depay;
763 rtph265depay = GST_RTP_H265_DEPAY (depayload);
765 if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
767 depayload->clock_rate = clock_rate;
769 /* Base64 encoded, comma separated config NALs */
770 vps = gst_structure_get_string (structure, "sprop-vps");
771 sps = gst_structure_get_string (structure, "sprop-sps");
772 pps = gst_structure_get_string (structure, "sprop-pps");
773 if (vps == NULL || sps == NULL || pps == NULL) {
776 ps = g_strdup_printf ("%s,%s,%s", vps, sps, pps);
779 /* negotiate with downstream w.r.t. output format and alignment */
780 gst_rtp_h265_depay_negotiate (rtph265depay);
782 if (rtph265depay->byte_stream && ps != NULL) {
783 /* for bytestream we only need the parameter sets but we don't error out
784 * when they are not there, we assume they are in the stream. */
786 GstBuffer *codec_data;
790 params = g_strsplit (ps, ",", 0);
792 /* count total number of bytes in base64. Also include the sync bytes in
793 * front of the params. */
795 for (i = 0; params[i]; i++) {
796 len += strlen (params[i]);
797 len += sizeof (sync_bytes);
799 /* we seriously overshoot the length, but it's fine. */
800 codec_data = gst_buffer_new_and_alloc (len);
802 gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
805 for (i = 0; params[i]; i++) {
809 GST_DEBUG_OBJECT (depayload, "decoding param %d (%s)", i, params[i]);
810 memcpy (ptr, sync_bytes, sizeof (sync_bytes));
811 ptr += sizeof (sync_bytes);
813 g_base64_decode_step (params[i], strlen (params[i]), ptr, &state,
815 GST_DEBUG_OBJECT (depayload, "decoded %d bytes", len);
816 total += len + sizeof (sync_bytes);
819 gst_buffer_unmap (codec_data, &map);
820 gst_buffer_resize (codec_data, 0, total);
823 /* keep the codec_data, we need to send it as the first buffer. We cannot
824 * push it in the adapter because the adapter might be flushed on discont.
826 if (rtph265depay->codec_data)
827 gst_buffer_unref (rtph265depay->codec_data);
828 rtph265depay->codec_data = codec_data;
829 } else if (!rtph265depay->byte_stream) {
834 goto incomplete_caps;
836 params = g_strsplit (ps, ",", 0);
838 GST_DEBUG_OBJECT (depayload, "we have %d params", g_strv_length (params));
840 /* start with 23 bytes header */
841 for (i = 0; params[i]; i++) {
848 nal_len = strlen (params[i]);
849 nal = gst_buffer_new_and_alloc (nal_len);
850 gst_buffer_map (nal, &nalmap, GST_MAP_READWRITE);
853 g_base64_decode_step (params[i], nal_len, nalmap.data, &state, &save);
855 GST_DEBUG_OBJECT (depayload, "adding param %d as %s", i,
856 (((nalmap.data[0] >> 1) & 0x3f) ==
857 32) ? "VPS" : (((nalmap.data[0] >> 1) & 0x3f) ==
858 33) ? "SPS" : "PPS");
860 gst_buffer_unmap (nal, &nalmap);
861 gst_buffer_set_size (nal, nal_len);
863 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay, nal);
867 if (rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0 ||
868 rtph265depay->pps->len == 0) {
869 goto incomplete_caps;
875 return gst_rtp_h265_set_src_caps (rtph265depay);
880 GST_DEBUG_OBJECT (depayload, "we have incomplete caps,"
881 " doing setcaps later");
888 gst_rtp_h265_complete_au (GstRtpH265Depay * rtph265depay,
889 GstClockTime * out_timestamp, gboolean * out_keyframe)
894 /* we had a picture in the adapter and we completed it */
895 GST_DEBUG_OBJECT (rtph265depay, "taking completed AU");
896 outsize = gst_adapter_available (rtph265depay->picture_adapter);
897 outbuf = gst_adapter_take_buffer (rtph265depay->picture_adapter, outsize);
899 *out_timestamp = rtph265depay->last_ts;
900 *out_keyframe = rtph265depay->last_keyframe;
902 rtph265depay->last_keyframe = FALSE;
903 rtph265depay->picture_start = FALSE;
908 /* VPS/SPS/PPS/RADL/TSA/RASL/IDR/CRA is considered key, all others DELTA;
909 * so downstream waiting for keyframe can pick up at VPS/SPS/PPS/IDR */
911 #define NAL_TYPE_IS_PARAMETER_SET(nt) ( ((nt) == GST_H265_VPS_NUT)\
912 || ((nt) == GST_H265_SPS_NUT)\
913 || ((nt) == GST_H265_PPS_NUT) )
915 #define NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt) ( ((nt) == GST_H265_NAL_SLICE_TRAIL_N)\
916 || ((nt) == GST_H265_NAL_SLICE_TRAIL_R)\
917 || ((nt) == GST_H265_NAL_SLICE_TSA_N)\
918 || ((nt) == GST_H265_NAL_SLICE_TSA_R)\
919 || ((nt) == GST_H265_NAL_SLICE_STSA_N)\
920 || ((nt) == GST_H265_NAL_SLICE_STSA_R)\
921 || ((nt) == GST_H265_NAL_SLICE_RASL_N)\
922 || ((nt) == GST_H265_NAL_SLICE_RASL_R)\
923 || ((nt) == GST_H265_NAL_SLICE_BLA_W_LP)\
924 || ((nt) == GST_H265_NAL_SLICE_BLA_W_RADL)\
925 || ((nt) == GST_H265_NAL_SLICE_BLA_N_LP)\
926 || ((nt) == GST_H265_NAL_SLICE_IDR_W_RADL)\
927 || ((nt) == GST_H265_NAL_SLICE_IDR_N_LP)\
928 || ((nt) == GST_H265_NAL_SLICE_CRA_NUT) )
930 #define NAL_TYPE_IS_KEY(nt) (NAL_TYPE_IS_PARAMETER_SET(nt) || NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt))
933 gst_rtp_h265_depay_handle_nal (GstRtpH265Depay * rtph265depay, GstBuffer * nal,
934 GstClockTime in_timestamp, gboolean marker)
936 GstRTPBaseDepayload *depayload = GST_RTP_BASE_DEPAYLOAD (rtph265depay);
939 GstBuffer *outbuf = NULL;
940 GstClockTime out_timestamp;
941 gboolean keyframe, out_keyframe;
943 gst_buffer_map (nal, &map, GST_MAP_READ);
944 if (G_UNLIKELY (map.size < 5))
947 nal_type = (map.data[4] >> 1) & 0x3f;
948 GST_DEBUG_OBJECT (rtph265depay, "handle NAL type %d (RTP marker bit %d)",
951 keyframe = NAL_TYPE_IS_KEY (nal_type);
953 out_keyframe = keyframe;
954 out_timestamp = in_timestamp;
956 if (!rtph265depay->byte_stream) {
957 if (NAL_TYPE_IS_PARAMETER_SET (nal_type)) {
958 gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay,
959 gst_buffer_copy_region (nal, GST_BUFFER_COPY_ALL,
960 4, gst_buffer_get_size (nal) - 4));
961 gst_buffer_unmap (nal, &map);
962 gst_buffer_unref (nal);
964 } else if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0) {
965 /* Down push down any buffer in non-bytestream mode if the SPS/PPS haven't
968 gst_pad_push_event (GST_RTP_BASE_DEPAYLOAD_SINKPAD (depayload),
969 gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
970 gst_structure_new ("GstForceKeyUnit",
971 "all-headers", G_TYPE_BOOLEAN, TRUE, NULL)));
972 gst_buffer_unmap (nal, &map);
973 gst_buffer_unref (nal);
977 if (rtph265depay->new_codec_data &&
978 rtph265depay->sps->len > 0 && rtph265depay->pps->len > 0)
979 gst_rtp_h265_set_src_caps (rtph265depay);
982 if (rtph265depay->merge) {
983 gboolean start = FALSE, complete = FALSE;
985 /* marker bit isn't mandatory so in the following code we try to detect
986 * an AU boundary (see H.265 spec section 7.4.2.4.4) */
988 if (NAL_TYPE_IS_CODED_SLICE_SEGMENT (nal_type)) {
989 /* 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 */
991 if (((map.data[6] >> 7) & 0x01) == 1) {
994 } else if ((nal_type >= 32 && nal_type <= 35)
995 || nal_type == 39 || (nal_type >= 41 && nal_type <= 44)
996 || (nal_type >= 48 && nal_type <= 55)) {
997 /* VPS, SPS, PPS, SEI, ... terminate an access unit */
1000 GST_DEBUG_OBJECT (depayload, "start %d, complete %d", start, complete);
1002 if (complete && rtph265depay->picture_start)
1003 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1006 /* add to adapter */
1007 gst_buffer_unmap (nal, &map);
1009 GST_DEBUG_OBJECT (depayload, "adding NAL to picture adapter");
1010 gst_adapter_push (rtph265depay->picture_adapter, nal);
1011 rtph265depay->last_ts = in_timestamp;
1012 rtph265depay->last_keyframe |= keyframe;
1013 rtph265depay->picture_start |= start;
1016 outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp,
1019 /* no merge, output is input nal */
1020 GST_DEBUG_OBJECT (depayload, "using NAL as output");
1022 gst_buffer_unmap (nal, &map);
1026 /* prepend codec_data */
1027 if (rtph265depay->codec_data) {
1028 GST_DEBUG_OBJECT (depayload, "prepending codec_data");
1029 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay),
1030 rtph265depay->codec_data, outbuf,
1031 g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1032 outbuf = gst_buffer_append (rtph265depay->codec_data, outbuf);
1033 rtph265depay->codec_data = NULL;
1034 out_keyframe = TRUE;
1036 outbuf = gst_buffer_make_writable (outbuf);
1038 gst_rtp_drop_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1039 g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1041 GST_BUFFER_PTS (outbuf) = out_timestamp;
1044 GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1046 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
1054 GST_WARNING_OBJECT (depayload, "dropping short NAL");
1055 gst_buffer_unmap (nal, &map);
1056 gst_buffer_unref (nal);
1062 gst_rtp_h265_push_fragmentation_unit (GstRtpH265Depay * rtph265depay,
1069 outsize = gst_adapter_available (rtph265depay->adapter);
1070 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
1072 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1073 GST_DEBUG_OBJECT (rtph265depay, "output %d bytes", outsize);
1075 if (rtph265depay->byte_stream) {
1076 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1078 goto not_implemented;
1080 gst_buffer_unmap (outbuf, &map);
1082 rtph265depay->current_fu_type = 0;
1084 outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf,
1085 rtph265depay->fu_timestamp, rtph265depay->fu_marker);
1087 if (send && outbuf) {
1088 gst_rtp_base_depayload_push (GST_RTP_BASE_DEPAYLOAD (rtph265depay), outbuf);
1095 GST_ERROR_OBJECT (rtph265depay,
1096 ("Only bytestream format is currently supported."));
1097 gst_buffer_unmap (outbuf, &map);
1103 gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
1105 GstRtpH265Depay *rtph265depay;
1106 GstBuffer *outbuf = NULL;
1107 guint8 nal_unit_type;
1109 rtph265depay = GST_RTP_H265_DEPAY (depayload);
1111 /* flush remaining data on discont */
1112 if (GST_BUFFER_IS_DISCONT (rtp->buffer)) {
1113 gst_adapter_clear (rtph265depay->adapter);
1114 rtph265depay->wait_start = TRUE;
1115 rtph265depay->current_fu_type = 0;
1123 guint outsize, nalu_size;
1124 GstClockTime timestamp;
1126 guint8 nuh_layer_id, nuh_temporal_id_plus1;
1130 gboolean donl_present = FALSE;
1133 timestamp = GST_BUFFER_PTS (rtp->buffer);
1135 payload_len = gst_rtp_buffer_get_payload_len (rtp);
1136 payload = gst_rtp_buffer_get_payload (rtp);
1137 marker = gst_rtp_buffer_get_marker (rtp);
1139 GST_DEBUG_OBJECT (rtph265depay, "receiving %d bytes", payload_len);
1141 if (payload_len == 0)
1144 /* +---------------+---------------+
1145 * |0|1|2|3|4|5|6|7|0|1|2|3|4|5|6|7|
1146 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1147 * |F| Type | LayerId | TID |
1148 * +-------------+-----------------+
1153 nal_unit_type = (payload[0] >> 1) & 0x3f;
1154 nuh_layer_id = ((payload[0] & 0x01) << 5) | (payload[1] >> 3); /* should be zero for now but this could change in future HEVC extensions */
1155 nuh_temporal_id_plus1 = payload[1] & 0x03;
1157 /* At least two byte header with type */
1160 GST_DEBUG_OBJECT (rtph265depay,
1161 "NAL header nal_unit_type %d, nuh_temporal_id_plus1 %d", nal_unit_type,
1162 nuh_temporal_id_plus1);
1164 GST_FIXME_OBJECT (rtph265depay, "Assuming DONL field is not present");
1166 /* FIXME - assuming DONL field is not present for now */
1167 /*donl_present = (tx-mode == "MST") || (sprop-max-don-diff > 0); */
1169 /* If FU unit was being processed, but the current nal is of a different
1170 * type. Assume that the remote payloader is buggy (didn't set the end bit
1171 * when the FU ended) and send out what we gathered thusfar */
1172 if (G_UNLIKELY (rtph265depay->current_fu_type != 0 &&
1173 nal_unit_type != rtph265depay->current_fu_type))
1174 gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE);
1176 switch (nal_unit_type) {
1179 GST_DEBUG_OBJECT (rtph265depay, "Processing aggregation packet");
1181 /* Aggregation packet (section 4.7) */
1183 /* An example of an AP packet containing two aggregation units
1184 without the DONL and DOND fields
1187 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
1188 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1190 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1191 | PayloadHdr (Type=48) | NALU 1 Size |
1192 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1194 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ NALU 1 Data |
1197 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1198 | . . . | NALU 2 Size | NALU 2 HDR |
1199 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1201 +-+-+-+-+-+-+-+-+ NALU 2 Data |
1203 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1204 | :...OPTIONAL RTP padding |
1205 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1209 payload += header_len;
1210 payload_len -= header_len;
1212 rtph265depay->wait_start = FALSE;
1216 goto not_implemented_donl_present;
1219 while (payload_len > 2) {
1221 nalu_size = (payload[0] << 8) | payload[1];
1223 /* dont include nalu_size */
1224 if (nalu_size > (payload_len - 2))
1225 nalu_size = payload_len - 2;
1227 outsize = nalu_size + sizeof (sync_bytes);
1228 outbuf = gst_buffer_new_and_alloc (outsize);
1230 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1231 if (rtph265depay->byte_stream) {
1232 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1234 goto not_implemented;
1237 /* strip NALU size */
1241 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1242 gst_buffer_unmap (outbuf, &map);
1244 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1245 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1248 gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1251 gst_adapter_push (rtph265depay->adapter, outbuf);
1253 payload += nalu_size;
1254 payload_len -= nalu_size;
1257 outsize = gst_adapter_available (rtph265depay->adapter);
1259 outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize);
1264 GST_DEBUG_OBJECT (rtph265depay, "Processing Fragmentation Unit");
1266 /* Fragmentation units (FUs) Section 4.8 */
1268 /* The structure of a Fragmentation Unit (FU)
1270 * 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
1271 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1272 | PayloadHdr (Type=49) | FU header | DONL (cond) |
1273 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-|
1278 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1279 | :...OPTIONAL RTP padding |
1280 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1286 payload += header_len;
1287 payload_len -= header_len;
1289 /* processing FU header */
1290 S = (payload[0] & 0x80) == 0x80;
1291 E = (payload[0] & 0x40) == 0x40;
1293 GST_DEBUG_OBJECT (rtph265depay,
1294 "FU header with S %d, E %d, nal_unit_type %d", S, E,
1297 if (rtph265depay->wait_start && !S)
1302 goto not_implemented_donl_present;
1307 GST_DEBUG_OBJECT (rtph265depay, "Start of Fragmentation Unit");
1309 /* If a new FU unit started, while still processing an older one.
1310 * Assume that the remote payloader is buggy (doesn't set the end
1311 * bit) and send out what we've gathered thusfar */
1312 if (G_UNLIKELY (rtph265depay->current_fu_type != 0))
1313 gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE);
1315 rtph265depay->current_fu_type = nal_unit_type;
1316 rtph265depay->fu_timestamp = timestamp;
1318 rtph265depay->wait_start = FALSE;
1320 /* reconstruct NAL header */
1322 ((payload[0] & 0x3f) << 9) | (nuh_layer_id << 3) |
1323 nuh_temporal_id_plus1;
1325 /* go back one byte so we can copy the payload + two bytes more in the front which
1326 * will be overwritten by the nal_header
1331 nalu_size = payload_len;
1332 outsize = nalu_size + sizeof (sync_bytes);
1333 outbuf = gst_buffer_new_and_alloc (outsize);
1335 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1336 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1337 map.data[sizeof (sync_bytes)] = nal_header >> 8;
1338 map.data[sizeof (sync_bytes) + 1] = nal_header & 0xff;
1339 gst_buffer_unmap (outbuf, &map);
1341 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1342 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1344 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1346 /* and assemble in the adapter */
1347 gst_adapter_push (rtph265depay->adapter, outbuf);
1350 GST_DEBUG_OBJECT (rtph265depay,
1351 "Following part of Fragmentation Unit");
1353 /* strip off FU header byte */
1357 outsize = payload_len;
1358 outbuf = gst_buffer_new_and_alloc (outsize);
1359 gst_buffer_fill (outbuf, 0, payload, outsize);
1361 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1362 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1364 GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize);
1366 /* and assemble in the adapter */
1367 gst_adapter_push (rtph265depay->adapter, outbuf);
1371 rtph265depay->fu_marker = marker;
1373 /* if NAL unit ends, flush the adapter */
1375 outbuf = gst_rtp_h265_push_fragmentation_unit (rtph265depay, FALSE);
1376 GST_DEBUG_OBJECT (rtph265depay, "End of Fragmentation Unit");
1381 goto not_implemented; /* PACI packets Section 4.9 */
1384 rtph265depay->wait_start = FALSE;
1386 /* All other cases: Single NAL unit packet Section 4.6 */
1387 /* the entire payload is the output buffer */
1391 goto not_implemented_donl_present;
1394 nalu_size = payload_len;
1395 outsize = nalu_size + sizeof (sync_bytes);
1396 outbuf = gst_buffer_new_and_alloc (outsize);
1398 gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
1399 if (rtph265depay->byte_stream) {
1400 memcpy (map.data, sync_bytes, sizeof (sync_bytes));
1402 goto not_implemented;
1404 memcpy (map.data + sizeof (sync_bytes), payload, nalu_size);
1405 gst_buffer_unmap (outbuf, &map);
1407 gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf,
1408 rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR));
1410 outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp,
1422 GST_DEBUG_OBJECT (rtph265depay, "empty packet");
1427 GST_DEBUG_OBJECT (rtph265depay, "waiting for start");
1431 not_implemented_donl_present:
1433 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1434 (NULL), ("DONL field present not supported yet"));
1440 GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT,
1441 (NULL), ("NAL unit type %d not supported yet", nal_unit_type));
1447 gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay, GstEvent * event)
1449 GstRtpH265Depay *rtph265depay;
1451 rtph265depay = GST_RTP_H265_DEPAY (depay);
1453 switch (GST_EVENT_TYPE (event)) {
1454 case GST_EVENT_FLUSH_STOP:
1455 gst_rtp_h265_depay_reset (rtph265depay);
1462 GST_RTP_BASE_DEPAYLOAD_CLASS (parent_class)->handle_event (depay, event);
1465 static GstStateChangeReturn
1466 gst_rtp_h265_depay_change_state (GstElement * element,
1467 GstStateChange transition)
1469 GstRtpH265Depay *rtph265depay;
1470 GstStateChangeReturn ret;
1472 rtph265depay = GST_RTP_H265_DEPAY (element);
1474 switch (transition) {
1475 case GST_STATE_CHANGE_NULL_TO_READY:
1477 case GST_STATE_CHANGE_READY_TO_PAUSED:
1478 gst_rtp_h265_depay_reset (rtph265depay);
1484 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1486 switch (transition) {
1487 case GST_STATE_CHANGE_READY_TO_NULL:
1496 gst_rtp_h265_depay_plugin_init (GstPlugin * plugin)
1498 GST_DEBUG_CATEGORY_INIT (rtph265depay_debug, "rtph265depay", 0,
1499 "H265 Video RTP Depayloader");
1501 return gst_element_register (plugin, "rtph265depay",
1502 GST_RANK_SECONDARY, GST_TYPE_RTP_H265_DEPAY);