diff options
Diffstat (limited to 'gst/rtp/gstrtph265depay.c')
| -rw-r--r-- | gst/rtp/gstrtph265depay.c | 1581 |
1 files changed, 0 insertions, 1581 deletions
diff --git a/gst/rtp/gstrtph265depay.c b/gst/rtp/gstrtph265depay.c deleted file mode 100644 index 64dcf12ce..000000000 --- a/gst/rtp/gstrtph265depay.c +++ /dev/null @@ -1,1581 +0,0 @@ -/* GStreamer - * Copyright (C) <2006> Wim Taymans <wim.taymans@gmail.com> - * Copyright (C) <2014> Jurgen Slowack <jurgenslowack@gmail.com> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include <stdio.h> -#include <string.h> - -#include <gst/base/gstbitreader.h> -#include <gst/rtp/gstrtpbuffer.h> -#include <gst/video/video.h> -#include "gstrtph265depay.h" - -GST_DEBUG_CATEGORY_STATIC (rtph265depay_debug); -#define GST_CAT_DEFAULT (rtph265depay_debug) - -/* This is what we'll default to when downstream hasn't - * expressed a restriction or preference via caps */ -#define DEFAULT_BYTE_STREAM TRUE -#define DEFAULT_ACCESS_UNIT FALSE - -/* 3 zero bytes syncword */ -static const guint8 sync_bytes[] = { 0, 0, 0, 1 }; - -static GstStaticPadTemplate gst_rtp_h265_depay_src_template = - GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ( - /* FIXME - hvc1 and hev1 formats are not supported yet */ - /*"video/x-h265, " - "stream-format = (string) hvc1, alignment = (string) au; " - "video/x-h265, " - "stream-format = (string) hev1, alignment = (string) au; " */ - "video/x-h265, " - "stream-format = (string) byte-stream, alignment = (string) { nal, au }") - ); - -static GstStaticPadTemplate gst_rtp_h265_depay_sink_template = -GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("application/x-rtp, " - "media = (string) \"video\", " - "clock-rate = (int) 90000, " "encoding-name = (string) \"H265\"") - /** optional parameters **/ - /* "profile-space = (int) [ 0, 3 ], " */ - /* "profile-id = (int) [ 0, 31 ], " */ - /* "tier-flag = (int) [ 0, 1 ], " */ - /* "level-id = (int) [ 0, 255 ], " */ - /* "interop-constraints = (string) ANY, " */ - /* "profile-compatibility-indicator = (string) ANY, " */ - /* "sprop-sub-layer-id = (int) [ 0, 6 ], " */ - /* "recv-sub-layer-id = (int) [ 0, 6 ], " */ - /* "max-recv-level-id = (int) [ 0, 255 ], " */ - /* "tx-mode = (string) {MST , SST}, " */ - /* "sprop-vps = (string) ANY, " */ - /* "sprop-sps = (string) ANY, " */ - /* "sprop-pps = (string) ANY, " */ - /* "sprop-sei = (string) ANY, " */ - /* "max-lsr = (int) ANY, " *//* MUST be in the range of MaxLumaSR to 16 * MaxLumaSR, inclusive */ - /* "max-lps = (int) ANY, " *//* MUST be in the range of MaxLumaPS to 16 * MaxLumaPS, inclusive */ - /* "max-cpb = (int) ANY, " *//* MUST be in the range of MaxCPB to 16 * MaxCPB, inclusive */ - /* "max-dpb = (int) [1, 16], " */ - /* "max-br = (int) ANY, " *//* MUST be in the range of MaxBR to 16 * MaxBR, inclusive, for the highest level */ - /* "max-tr = (int) ANY, " *//* MUST be in the range of MaxTileRows to 16 * MaxTileRows, inclusive, for the highest level */ - /* "max-tc = (int) ANY, " *//* MUST be in the range of MaxTileCols to 16 * MaxTileCols, inclusive, for the highest level */ - /* "max-fps = (int) ANY, " */ - /* "sprop-max-don-diff = (int) [0, 32767], " */ - /* "sprop-depack-buf-nalus = (int) [0, 32767], " */ - /* "sprop-depack-buf-nalus = (int) [0, 4294967295], " */ - /* "depack-buf-cap = (int) [1, 4294967295], " */ - /* "sprop-segmentation-id = (int) [0, 3], " */ - /* "sprop-spatial-segmentation-idc = (string) ANY, " */ - /* "dec-parallel-cap = (string) ANY, " */ - ); - -#define gst_rtp_h265_depay_parent_class parent_class -G_DEFINE_TYPE (GstRtpH265Depay, gst_rtp_h265_depay, - GST_TYPE_RTP_BASE_DEPAYLOAD); - -static void gst_rtp_h265_depay_finalize (GObject * object); - -static GstStateChangeReturn gst_rtp_h265_depay_change_state (GstElement * - element, GstStateChange transition); - -static GstBuffer *gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload, - GstRTPBuffer * rtp); -static gboolean gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * filter, - GstCaps * caps); -static gboolean gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay, - GstEvent * event); - -static void -gst_rtp_h265_depay_class_init (GstRtpH265DepayClass * klass) -{ - GObjectClass *gobject_class; - GstElementClass *gstelement_class; - GstRTPBaseDepayloadClass *gstrtpbasedepayload_class; - - gobject_class = (GObjectClass *) klass; - gstelement_class = (GstElementClass *) klass; - gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass; - - gobject_class->finalize = gst_rtp_h265_depay_finalize; - - gst_element_class_add_pad_template (gstelement_class, - gst_static_pad_template_get (&gst_rtp_h265_depay_src_template)); - gst_element_class_add_pad_template (gstelement_class, - gst_static_pad_template_get (&gst_rtp_h265_depay_sink_template)); - - gst_element_class_set_static_metadata (gstelement_class, - "RTP H265 depayloader", "Codec/Depayloader/Network/RTP", - "Extracts H265 video from RTP packets (draft-ietf-payload-rtp-h265-03.txt)", - "Jurgen Slowack <jurgenslowack@gmail.com>"); - gstelement_class->change_state = gst_rtp_h265_depay_change_state; - - gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_h265_depay_process; - gstrtpbasedepayload_class->set_caps = gst_rtp_h265_depay_setcaps; - gstrtpbasedepayload_class->handle_event = gst_rtp_h265_depay_handle_event; -} - -static void -gst_rtp_h265_depay_init (GstRtpH265Depay * rtph265depay) -{ - rtph265depay->adapter = gst_adapter_new (); - rtph265depay->picture_adapter = gst_adapter_new (); - rtph265depay->byte_stream = DEFAULT_BYTE_STREAM; - rtph265depay->stream_format = (gchar *) g_malloc (10); - rtph265depay->merge = DEFAULT_ACCESS_UNIT; - rtph265depay->vps = g_ptr_array_new_with_free_func ( - (GDestroyNotify) gst_buffer_unref); - rtph265depay->sps = g_ptr_array_new_with_free_func ( - (GDestroyNotify) gst_buffer_unref); - rtph265depay->pps = g_ptr_array_new_with_free_func ( - (GDestroyNotify) gst_buffer_unref); -} - -static void -gst_rtp_h265_depay_reset (GstRtpH265Depay * rtph265depay) -{ - gst_adapter_clear (rtph265depay->adapter); - rtph265depay->wait_start = TRUE; - gst_adapter_clear (rtph265depay->picture_adapter); - rtph265depay->picture_start = FALSE; - rtph265depay->last_keyframe = FALSE; - rtph265depay->last_ts = 0; - rtph265depay->current_fu_type = 0; - rtph265depay->new_codec_data = FALSE; - g_ptr_array_set_size (rtph265depay->vps, 0); - g_ptr_array_set_size (rtph265depay->sps, 0); - g_ptr_array_set_size (rtph265depay->pps, 0); -} - -static void -gst_rtp_h265_depay_finalize (GObject * object) -{ - GstRtpH265Depay *rtph265depay; - - rtph265depay = GST_RTP_H265_DEPAY (object); - - if (rtph265depay->codec_data) - gst_buffer_unref (rtph265depay->codec_data); - - g_free (rtph265depay->stream_format); - - g_object_unref (rtph265depay->adapter); - g_object_unref (rtph265depay->picture_adapter); - - g_ptr_array_free (rtph265depay->vps, TRUE); - g_ptr_array_free (rtph265depay->sps, TRUE); - g_ptr_array_free (rtph265depay->pps, TRUE); - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -static void -gst_rtp_h265_depay_negotiate (GstRtpH265Depay * rtph265depay) -{ - GstCaps *caps; - gint byte_stream = -1; - gint merge = -1; - - caps = - gst_pad_get_allowed_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay)); - - GST_DEBUG_OBJECT (rtph265depay, "allowed caps: %" GST_PTR_FORMAT, caps); - - if (caps) { - if (gst_caps_get_size (caps) > 0) { - GstStructure *s = gst_caps_get_structure (caps, 0); - const gchar *str = NULL; - - if ((str = gst_structure_get_string (s, "stream-format"))) { - - strcpy (rtph265depay->stream_format, str); - - if (strcmp (str, "hev1") == 0) { - byte_stream = FALSE; - } else if (strcmp (str, "hvc1") == 0) { - byte_stream = FALSE; - } else if (strcmp (str, "byte-stream") == 0) { - byte_stream = TRUE; - } else { - GST_DEBUG_OBJECT (rtph265depay, "unknown stream-format: %s", str); - } - } - - if ((str = gst_structure_get_string (s, "alignment"))) { - if (strcmp (str, "au") == 0) { - merge = TRUE; - } else if (strcmp (str, "nal") == 0) { - merge = FALSE; - } else { - GST_DEBUG_OBJECT (rtph265depay, "unknown alignment: %s", str); - } - } - } - gst_caps_unref (caps); - } - - if (byte_stream != -1) { - GST_DEBUG_OBJECT (rtph265depay, "downstream requires byte-stream %d", - byte_stream); - rtph265depay->byte_stream = byte_stream; - } else { - GST_DEBUG_OBJECT (rtph265depay, "defaulting to byte-stream %d", - DEFAULT_BYTE_STREAM); - strcpy (rtph265depay->stream_format, "byte-stream"); - rtph265depay->byte_stream = DEFAULT_BYTE_STREAM; - } - if (merge != -1) { - GST_DEBUG_OBJECT (rtph265depay, "downstream requires merge %d", merge); - rtph265depay->merge = merge; - } else { - GST_DEBUG_OBJECT (rtph265depay, "defaulting to merge %d", - DEFAULT_ACCESS_UNIT); - rtph265depay->merge = DEFAULT_ACCESS_UNIT; - } -} - -/* Stolen from bad/gst/mpegtsdemux/payloader_parsers.c */ -/* variable length Exp-Golomb parsing according to H.265 spec section 9.2*/ -static gboolean -read_golomb (GstBitReader * br, guint32 * value) -{ - guint8 b, leading_zeros = -1; - *value = 1; - - for (b = 0; !b; leading_zeros++) { - if (!gst_bit_reader_get_bits_uint8 (br, &b, 1)) - return FALSE; - *value *= 2; - } - - *value = (*value >> 1) - 1; - if (leading_zeros > 0) { - guint32 tmp = 0; - if (!gst_bit_reader_get_bits_uint32 (br, &tmp, leading_zeros)) - return FALSE; - *value += tmp; - } - - return TRUE; -} - -static gboolean -parse_sps (GstMapInfo * map, guint32 * sps_id) -{ /* To parse seq_parameter_set_id */ - GstBitReader br = GST_BIT_READER_INIT (map->data + 15, - map->size - 15); - - if (map->size < 16) - return FALSE; - - if (!read_golomb (&br, sps_id)) - return FALSE; - - return TRUE; -} - -static gboolean -parse_pps (GstMapInfo * map, guint32 * sps_id, guint32 * pps_id) -{ /* To parse picture_parameter_set_id */ - GstBitReader br = GST_BIT_READER_INIT (map->data + 2, - map->size - 2); - - if (map->size < 3) - return FALSE; - - if (!read_golomb (&br, pps_id)) - return FALSE; - if (!read_golomb (&br, sps_id)) - return FALSE; - - return TRUE; -} - - -static gboolean -gst_rtp_h265_set_src_caps (GstRtpH265Depay * rtph265depay) -{ - gboolean res; - GstCaps *srccaps; - - if (!rtph265depay->byte_stream && - (!rtph265depay->new_codec_data || - rtph265depay->vps->len == 0 || rtph265depay->sps->len == 0 - || rtph265depay->pps->len == 0)) - return TRUE; - - srccaps = gst_caps_new_simple ("video/x-h265", - "stream-format", G_TYPE_STRING, - rtph265depay->stream_format, - "alignment", G_TYPE_STRING, rtph265depay->merge ? "au" : "nal", NULL); - - if (!rtph265depay->byte_stream) { - - GstBuffer *codec_data; - gint i = 0; - gint len; - guint num_vps = rtph265depay->vps->len; - guint num_sps = rtph265depay->sps->len; - guint num_pps = rtph265depay->pps->len; - GstMapInfo map, nalmap; - guint8 *data; - gint nl; - guint8 num_arrays = 0; - guint new_size; - GstBitReader br; - guint32 tmp; - guint8 tmp8 = 0; - guint32 max_sub_layers_minus1, temporal_id_nesting_flag, chroma_format_idc, - bit_depth_luma_minus8, bit_depth_chroma_minus8, - min_spatial_segmentation_idc; - - /* Fixme: Current implementation is not embedding SEI in codec_data */ - - if (num_sps == 0) - return FALSE; - - /* start with 23 bytes header */ - len = 23; - - num_arrays = (num_vps > 0) + (num_sps > 0) + (num_pps > 0); - len += num_arrays; - - /* add size of vps, sps & pps */ - for (i = 0; i < num_vps; i++) - len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i)); - for (i = 0; i < num_sps; i++) - len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i)); - for (i = 0; i < num_pps; i++) - len += 2 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i)); - - GST_DEBUG_OBJECT (rtph265depay, - "constructing codec_data: num_vps =%d num_sps=%d, num_pps=%d", num_vps, - num_sps, num_pps); - - codec_data = gst_buffer_new_and_alloc (len); - g_debug ("alloc_len: %u", len); - gst_buffer_map (codec_data, &map, GST_MAP_READWRITE); - data = map.data; - - memset (data, 0, map.size); - - /* Parsing sps to get the info required further on */ - - gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap, - GST_MAP_READ); - - max_sub_layers_minus1 = ((nalmap.data[2]) >> 1) & 0x07; - temporal_id_nesting_flag = nalmap.data[2] & 0x01; - - gst_bit_reader_init (&br, nalmap.data + 15, nalmap.size - 15); - - read_golomb (&br, &tmp); /* sps_seq_parameter_set_id */ - read_golomb (&br, &chroma_format_idc); /* chroma_format_idc */ - - if (chroma_format_idc == 3) - - gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* separate_colour_plane_flag */ - - read_golomb (&br, &tmp); /* pic_width_in_luma_samples */ - read_golomb (&br, &tmp); /* pic_height_in_luma_samples */ - - gst_bit_reader_get_bits_uint8 (&br, &tmp8, 1); /* conformance_window_flag */ - if (tmp8) { - read_golomb (&br, &tmp); /* conf_win_left_offset */ - read_golomb (&br, &tmp); /* conf_win_right_offset */ - read_golomb (&br, &tmp); /* conf_win_top_offset */ - read_golomb (&br, &tmp); /* conf_win_bottom_offset */ - } - - read_golomb (&br, &bit_depth_luma_minus8); /* bit_depth_luma_minus8 */ - read_golomb (&br, &bit_depth_chroma_minus8); /* bit_depth_chroma_minus8 */ - - GST_DEBUG_OBJECT (rtph265depay, - "Ignoring min_spatial_segmentation for now (assuming zero)"); - - 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 */ - - nl = nalmap.size; - - gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap); - - /* HEVCDecoderConfigurationVersion = 1 */ - data[0] = 1; - - /* Copy from profile_tier_level (Rec. ITU-T H.265 (04/2013) section 7.3.3 - * - * profile_space | tier_flat | profile_idc | - * profile_compatibility_flags | constraint_indicator_flags | - * level_idc | progressive_source_flag | interlaced_source_flag - * non_packed_constraint_flag | frame_only_constraint_flag - * reserved_zero_44bits | level_idc */ - gst_buffer_map (g_ptr_array_index (rtph265depay->sps, 0), &nalmap, - GST_MAP_READ); - for (i = 0; i < 12; i++) - data[i + 1] = nalmap.data[i]; - gst_buffer_unmap (g_ptr_array_index (rtph265depay->sps, 0), &nalmap); - - /* min_spatial_segmentation_idc */ - GST_WRITE_UINT16_BE (data + 13, min_spatial_segmentation_idc); - data[13] |= 0xf0; - data[15] = 0xfc; /* keeping parrallelismType as zero (unknown) */ - data[16] = 0xfc | chroma_format_idc; - data[17] = 0xf8 | bit_depth_luma_minus8; - data[18] = 0xf8 | bit_depth_chroma_minus8; - data[19] = 0x00; /* keep avgFrameRate as unspecified */ - data[20] = 0x00; /* keep avgFrameRate as unspecified */ - /* constFrameRate(2 bits): 0, stream may or may not be of constant framerate - * numTemporalLayers (3 bits): number of temporal layers, value from SPS - * TemporalIdNested (1 bit): sps_temporal_id_nesting_flag from SPS - * lengthSizeMinusOne (2 bits): plus 1 indicates the length of the NALUnitLength */ - data[21] = - 0x00 | ((max_sub_layers_minus1 + - 1) << 3) | (temporal_id_nesting_flag << 2) | (nl - 1); - GST_WRITE_UINT8 (data + 22, num_arrays); /* numOfArrays */ - - data += 23; - - /* copy all VPS */ - if (num_vps > 0) { - /* array_completeness | reserved_zero bit | nal_unit_type */ - data[0] = 0x00 | 0x20; - data++; - - GST_WRITE_UINT16_BE (data, num_vps); - data += 2; - - for (i = 0; i < num_vps; i++) { - gsize nal_size = - gst_buffer_get_size (g_ptr_array_index (rtph265depay->vps, i)); - GST_WRITE_UINT16_BE (data, nal_size); - gst_buffer_extract (g_ptr_array_index (rtph265depay->vps, i), 0, - data + 2, nal_size); - data += 2 + nal_size; - GST_DEBUG_OBJECT (rtph265depay, "Copied VPS %d of length %u", i, - (guint) nal_size); - } - } - - /* copy all SPS */ - if (num_sps > 0) { - /* array_completeness | reserved_zero bit | nal_unit_type */ - data[0] = 0x00 | 0x21; - data++; - - GST_WRITE_UINT16_BE (data, num_sps); - data += 2; - - for (i = 0; i < num_sps; i++) { - gsize nal_size = - gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i)); - GST_WRITE_UINT16_BE (data, nal_size); - gst_buffer_extract (g_ptr_array_index (rtph265depay->sps, i), 0, - data + 2, nal_size); - data += 2 + nal_size; - GST_DEBUG_OBJECT (rtph265depay, "Copied SPS %d of length %u", i, - (guint) nal_size); - } - } - - /* copy all PPS */ - if (num_pps > 0) { - /* array_completeness | reserved_zero bit | nal_unit_type */ - data[0] = 0x00 | 0x22; - data++; - - GST_WRITE_UINT16_BE (data, num_pps); - data += 2; - - for (i = 0; i < num_pps; i++) { - gsize nal_size = - gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i)); - GST_WRITE_UINT16_BE (data, nal_size); - gst_buffer_extract (g_ptr_array_index (rtph265depay->pps, i), 0, - data + 2, nal_size); - data += 2 + nal_size; - GST_DEBUG_OBJECT (rtph265depay, "Copied PPS %d of length %u", i, - (guint) nal_size); - } - } - - new_size = data - map.data; - gst_buffer_unmap (codec_data, &map); - gst_buffer_set_size (codec_data, new_size); - - gst_caps_set_simple (srccaps, - "codec_data", GST_TYPE_BUFFER, codec_data, NULL); - gst_buffer_unref (codec_data); - } - - if (gst_pad_has_current_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay))) { - GstCaps *old_caps = - gst_pad_get_current_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay)); - - /* Only update the caps if they are not equal. For - * AVC we don't update caps if only the codec_data - * changes. This is the same behaviour as in h264parse - * and gstrtph264depay - */ - if (rtph265depay->byte_stream) { - if (!gst_caps_is_equal (srccaps, old_caps)) - res = - gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay), - srccaps); - else - res = TRUE; - } else { - GstCaps *tmp_caps = gst_caps_copy (srccaps); - GstStructure *old_s, *tmp_s; - - old_s = gst_caps_get_structure (old_caps, 0); - tmp_s = gst_caps_get_structure (tmp_caps, 0); - if (gst_structure_has_field (old_s, "codec_data")) - gst_structure_set_value (tmp_s, "codec_data", - gst_structure_get_value (old_s, "codec_data")); - - if (!gst_caps_is_equal (old_caps, tmp_caps)) - res = - gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay), - srccaps); - else - res = TRUE; - - gst_caps_unref (tmp_caps); - } - } else { - res = - gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (rtph265depay), - srccaps); - } - - gst_caps_unref (srccaps); - - /* Insert SPS and PPS into the stream on next opportunity */ - if (rtph265depay->sps->len > 0 || rtph265depay->pps->len > 0) { - gint i; - GstBuffer *codec_data; - GstMapInfo map; - guint8 *data; - guint len = 0; - - for (i = 0; i < rtph265depay->sps->len; i++) { - len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->sps, i)); - } - - for (i = 0; i < rtph265depay->pps->len; i++) { - len += 4 + gst_buffer_get_size (g_ptr_array_index (rtph265depay->pps, i)); - } - - codec_data = gst_buffer_new_and_alloc (len); - gst_buffer_map (codec_data, &map, GST_MAP_WRITE); - data = map.data; - - for (i = 0; i < rtph265depay->sps->len; i++) { - GstBuffer *sps_buf = g_ptr_array_index (rtph265depay->sps, i); - guint sps_size = gst_buffer_get_size (sps_buf); - - if (rtph265depay->byte_stream) - memcpy (data, sync_bytes, sizeof (sync_bytes)); - else - GST_WRITE_UINT32_BE (data, sps_size); - gst_buffer_extract (sps_buf, 0, data + 4, -1); - data += 4 + sps_size; - } - - for (i = 0; i < rtph265depay->pps->len; i++) { - GstBuffer *pps_buf = g_ptr_array_index (rtph265depay->pps, i); - guint pps_size = gst_buffer_get_size (pps_buf); - - if (rtph265depay->byte_stream) - memcpy (data, sync_bytes, sizeof (sync_bytes)); - else - GST_WRITE_UINT32_BE (data, pps_size); - gst_buffer_extract (pps_buf, 0, data + 4, -1); - data += 4 + pps_size; - } - - gst_buffer_unmap (codec_data, &map); - if (rtph265depay->codec_data) - gst_buffer_unref (rtph265depay->codec_data); - rtph265depay->codec_data = codec_data; - } - - if (res) - rtph265depay->new_codec_data = FALSE; - - return res; -} - -gboolean -gst_rtp_h265_add_vps_sps_pps (GstElement * rtph265, GPtrArray * vps_array, - GPtrArray * sps_array, GPtrArray * pps_array, GstBuffer * nal) -{ - GstMapInfo map; - guchar type; - guint i; - - gst_buffer_map (nal, &map, GST_MAP_READ); - - type = (map.data[0] >> 1) & 0x3f; - - if (type == GST_H265_VPS_NUT) { - guint32 vps_id = (map.data[2] >> 4) & 0x0f; - - for (i = 0; i < vps_array->len; i++) { - GstBuffer *vps = g_ptr_array_index (vps_array, i); - GstMapInfo vpsmap; - guint32 tmp_vps_id; - - gst_buffer_map (vps, &vpsmap, GST_MAP_READ); - tmp_vps_id = (vpsmap.data[2] >> 4) & 0x0f; - - if (vps_id == tmp_vps_id) { - if (map.size == vpsmap.size && - memcmp (map.data, vpsmap.data, vpsmap.size) == 0) { - GST_LOG_OBJECT (rtph265, "Unchanged VPS %u, not updating", vps_id); - gst_buffer_unmap (vps, &vpsmap); - goto drop; - } else { - gst_buffer_unmap (vps, &vpsmap); - g_ptr_array_remove_index_fast (vps_array, i); - g_ptr_array_add (vps_array, nal); - GST_LOG_OBJECT (rtph265, "Modified VPS %u, replacing", vps_id); - goto done; - } - } - gst_buffer_unmap (vps, &vpsmap); - } - GST_LOG_OBJECT (rtph265, "Adding new VPS %u", vps_id); - g_ptr_array_add (vps_array, nal); - } else if (type == GST_H265_SPS_NUT) { - guint32 sps_id; - - if (!parse_sps (&map, &sps_id)) { - GST_WARNING_OBJECT (rtph265, "Invalid SPS," - " can't parse seq_parameter_set_id"); - goto drop; - } - - for (i = 0; i < sps_array->len; i++) { - GstBuffer *sps = g_ptr_array_index (sps_array, i); - GstMapInfo spsmap; - guint32 tmp_sps_id; - - gst_buffer_map (sps, &spsmap, GST_MAP_READ); - parse_sps (&spsmap, &tmp_sps_id); - - if (sps_id == tmp_sps_id) { - if (map.size == spsmap.size && - memcmp (map.data, spsmap.data, spsmap.size) == 0) { - GST_LOG_OBJECT (rtph265, "Unchanged SPS %u, not updating", sps_id); - gst_buffer_unmap (sps, &spsmap); - goto drop; - } else { - gst_buffer_unmap (sps, &spsmap); - g_ptr_array_remove_index_fast (sps_array, i); - g_ptr_array_add (sps_array, nal); - GST_LOG_OBJECT (rtph265, "Modified SPS %u, replacing", sps_id); - goto done; - } - } - gst_buffer_unmap (sps, &spsmap); - } - GST_LOG_OBJECT (rtph265, "Adding new SPS %u", sps_id); - g_ptr_array_add (sps_array, nal); - } else if (type == GST_H265_PPS_NUT) { - guint32 sps_id; - guint32 pps_id; - - if (!parse_pps (&map, &sps_id, &pps_id)) { - GST_WARNING_OBJECT (rtph265, "Invalid PPS," - " can't parse seq_parameter_set_id or pic_parameter_set_id"); - goto drop; - } - - for (i = 0; i < pps_array->len; i++) { - GstBuffer *pps = g_ptr_array_index (pps_array, i); - GstMapInfo ppsmap; - guint32 tmp_sps_id; - guint32 tmp_pps_id; - - - gst_buffer_map (pps, &ppsmap, GST_MAP_READ); - parse_pps (&ppsmap, &tmp_sps_id, &tmp_pps_id); - - if (pps_id == tmp_pps_id) { - if (map.size == ppsmap.size && - memcmp (map.data, ppsmap.data, ppsmap.size) == 0) { - GST_LOG_OBJECT (rtph265, "Unchanged PPS %u:%u, not updating", sps_id, - pps_id); - gst_buffer_unmap (pps, &ppsmap); - goto drop; - } else { - gst_buffer_unmap (pps, &ppsmap); - g_ptr_array_remove_index_fast (pps_array, i); - g_ptr_array_add (pps_array, nal); - GST_LOG_OBJECT (rtph265, "Modified PPS %u:%u, replacing", - sps_id, pps_id); - goto done; - } - } - gst_buffer_unmap (pps, &ppsmap); - } - GST_LOG_OBJECT (rtph265, "Adding new PPS %u:%i", sps_id, pps_id); - g_ptr_array_add (pps_array, nal); - } else { - goto drop; - } - -done: - gst_buffer_unmap (nal, &map); - - return TRUE; - -drop: - gst_buffer_unmap (nal, &map); - gst_buffer_unref (nal); - - return FALSE; -} - - -static void -gst_rtp_h265_depay_add_vps_sps_pps (GstRtpH265Depay * rtph265depay, - GstBuffer * nal) -{ - if (gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265depay), - rtph265depay->vps, rtph265depay->sps, rtph265depay->pps, nal)) - rtph265depay->new_codec_data = TRUE; -} - -static gboolean -gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps) -{ - gint clock_rate; - GstStructure *structure = gst_caps_get_structure (caps, 0); - GstRtpH265Depay *rtph265depay; - const gchar *ps; - GstBuffer *codec_data; - GstMapInfo map; - guint8 *ptr; - - rtph265depay = GST_RTP_H265_DEPAY (depayload); - - if (!gst_structure_get_int (structure, "clock-rate", &clock_rate)) - clock_rate = 90000; - depayload->clock_rate = clock_rate; - - /* Base64 encoded, comma separated config NALs */ - ps = gst_structure_get_string (structure, "sprop-parameter-sets"); - - /* negotiate with downstream w.r.t. output format and alignment */ - gst_rtp_h265_depay_negotiate (rtph265depay); - - if (rtph265depay->byte_stream && ps != NULL) { - /* for bytestream we only need the parameter sets but we don't error out - * when they are not there, we assume they are in the stream. */ - gchar **params; - guint len, total; - gint i; - - params = g_strsplit (ps, ",", 0); - - /* count total number of bytes in base64. Also include the sync bytes in - * front of the params. */ - len = 0; - for (i = 0; params[i]; i++) { - len += strlen (params[i]); - len += sizeof (sync_bytes); - } - /* we seriously overshoot the length, but it's fine. */ - codec_data = gst_buffer_new_and_alloc (len); - - gst_buffer_map (codec_data, &map, GST_MAP_WRITE); - ptr = map.data; - total = 0; - for (i = 0; params[i]; i++) { - guint save = 0; - gint state = 0; - - GST_DEBUG_OBJECT (depayload, "decoding param %d (%s)", i, params[i]); - memcpy (ptr, sync_bytes, sizeof (sync_bytes)); - ptr += sizeof (sync_bytes); - len = - g_base64_decode_step (params[i], strlen (params[i]), ptr, &state, - &save); - GST_DEBUG_OBJECT (depayload, "decoded %d bytes", len); - total += len + sizeof (sync_bytes); - ptr += len; - } - gst_buffer_unmap (codec_data, &map); - gst_buffer_resize (codec_data, 0, total); - g_strfreev (params); - - /* keep the codec_data, we need to send it as the first buffer. We cannot - * push it in the adapter because the adapter might be flushed on discont. - */ - if (rtph265depay->codec_data) - gst_buffer_unref (rtph265depay->codec_data); - rtph265depay->codec_data = codec_data; - } else if (!rtph265depay->byte_stream) { - gchar **params; - gint i; - - if (ps == NULL) - goto incomplete_caps; - - params = g_strsplit (ps, ",", 0); - - GST_DEBUG_OBJECT (depayload, "we have %d params", g_strv_length (params)); - - /* start with 23 bytes header */ - for (i = 0; params[i]; i++) { - GstBuffer *nal; - GstMapInfo nalmap; - gsize nal_len; - guint save = 0; - gint state = 0; - - nal_len = strlen (params[i]); - nal = gst_buffer_new_and_alloc (nal_len); - gst_buffer_map (nal, &nalmap, GST_MAP_READWRITE); - - nal_len = - g_base64_decode_step (params[i], nal_len, nalmap.data, &state, &save); - - GST_DEBUG_OBJECT (depayload, "adding param %d as %s", i, - (((nalmap.data[0] >> 1) & 0x3f) == - 32) ? "VPS" : (((nalmap.data[0] >> 1) & 0x3f) == - 33) ? "SPS" : "PPS"); - - gst_buffer_unmap (nal, &nalmap); - gst_buffer_set_size (nal, nal_len); - - gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay, nal); - } - g_strfreev (params); - - if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0) - goto incomplete_caps; - } - - return gst_rtp_h265_set_src_caps (rtph265depay); - - /* ERRORS */ -incomplete_caps: - { - GST_DEBUG_OBJECT (depayload, "we have incomplete caps," - " doing setcaps later"); - return TRUE; - } -} - -static GstBuffer * -gst_rtp_h265_complete_au (GstRtpH265Depay * rtph265depay, - GstClockTime * out_timestamp, gboolean * out_keyframe) -{ - guint outsize; - GstBuffer *outbuf; - - /* we had a picture in the adapter and we completed it */ - GST_DEBUG_OBJECT (rtph265depay, "taking completed AU"); - outsize = gst_adapter_available (rtph265depay->picture_adapter); - outbuf = gst_adapter_take_buffer (rtph265depay->picture_adapter, outsize); - - *out_timestamp = rtph265depay->last_ts; - *out_keyframe = rtph265depay->last_keyframe; - - rtph265depay->last_keyframe = FALSE; - rtph265depay->picture_start = FALSE; - - return outbuf; -} - -/* VPS/SPS/PPS/RADL/TSA/RASL/IDR/CRA is considered key, all others DELTA; - * so downstream waiting for keyframe can pick up at VPS/SPS/PPS/IDR */ - -#define NAL_TYPE_IS_PARAMETER_SET(nt) ( ((nt) == GST_H265_VPS_NUT)\ - || ((nt) == GST_H265_SPS_NUT)\ - || ((nt) == GST_H265_PPS_NUT) ) - -#define NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt) ( ((nt) == GST_H265_NAL_SLICE_TRAIL_N)\ - || ((nt) == GST_H265_NAL_SLICE_TRAIL_R)\ - || ((nt) == GST_H265_NAL_SLICE_TSA_N)\ - || ((nt) == GST_H265_NAL_SLICE_TSA_R)\ - || ((nt) == GST_H265_NAL_SLICE_STSA_N)\ - || ((nt) == GST_H265_NAL_SLICE_STSA_R)\ - || ((nt) == GST_H265_NAL_SLICE_RASL_N)\ - || ((nt) == GST_H265_NAL_SLICE_RASL_R)\ - || ((nt) == GST_H265_NAL_SLICE_BLA_W_LP)\ - || ((nt) == GST_H265_NAL_SLICE_BLA_W_RADL)\ - || ((nt) == GST_H265_NAL_SLICE_BLA_N_LP)\ - || ((nt) == GST_H265_NAL_SLICE_IDR_W_RADL)\ - || ((nt) == GST_H265_NAL_SLICE_IDR_N_LP)\ - || ((nt) == GST_H265_NAL_SLICE_CRA_NUT) ) - -#define NAL_TYPE_IS_KEY(nt) (NAL_TYPE_IS_PARAMETER_SET(nt) || NAL_TYPE_IS_CODED_SLICE_SEGMENT(nt)) - -static gboolean -foreach_metadata_copy (GstBuffer * inbuf, GstMeta ** meta, gpointer user_data) -{ - CopyMetaData *data = user_data; - GstElement *element = data->element; - GstBuffer *outbuf = data->outbuf; - GQuark copy_tag = data->copy_tag; - const GstMetaInfo *info = (*meta)->info; - const gchar *const *tags = gst_meta_api_type_get_tags (info->api); - - if (!tags || (copy_tag != 0 && g_strv_length ((gchar **) tags) == 1 - && gst_meta_api_type_has_tag (info->api, copy_tag))) { - GstMetaTransformCopy copy_data = { FALSE, 0, -1 }; - GST_DEBUG_OBJECT (element, "copy metadata %s", g_type_name (info->api)); - /* simply copy then */ - info->transform_func (outbuf, *meta, inbuf, - _gst_meta_transform_copy, ©_data); - } else { - GST_DEBUG_OBJECT (element, "not copying metadata %s", - g_type_name (info->api)); - } - - return TRUE; -} - -/* TODO: Should probably make copy_tag an array at some point */ -void -gst_rtp_copy_meta (GstElement * element, GstBuffer * outbuf, GstBuffer * inbuf, - GQuark copy_tag) -{ - CopyMetaData data = { element, outbuf, copy_tag }; - - gst_buffer_foreach_meta (inbuf, foreach_metadata_copy, &data); -} - -static gboolean -foreach_metadata_drop (GstBuffer * inbuf, GstMeta ** meta, gpointer user_data) -{ - DropMetaData *data = user_data; - GstElement *element = data->element; - GQuark keep_tag = data->keep_tag; - const GstMetaInfo *info = (*meta)->info; - const gchar *const *tags = gst_meta_api_type_get_tags (info->api); - - if (!tags || (keep_tag != 0 && g_strv_length ((gchar **) tags) == 1 - && gst_meta_api_type_has_tag (info->api, keep_tag))) { - GST_DEBUG_OBJECT (element, "keeping metadata %s", g_type_name (info->api)); - } else { - GST_DEBUG_OBJECT (element, "dropping metadata %s", g_type_name (info->api)); - *meta = NULL; - } - - return TRUE; -} - -/* TODO: Should probably make keep_tag an array at some point */ -static void -gst_rtp_drop_meta (GstElement * element, GstBuffer * buf, GQuark keep_tag) -{ - DropMetaData data = { element, keep_tag }; - - gst_buffer_foreach_meta (buf, foreach_metadata_drop, &data); -} - -static GstBuffer * -gst_rtp_h265_depay_handle_nal (GstRtpH265Depay * rtph265depay, GstBuffer * nal, - GstClockTime in_timestamp, gboolean marker) -{ - GstRTPBaseDepayload *depayload = GST_RTP_BASE_DEPAYLOAD (rtph265depay); - gint nal_type; - GstMapInfo map; - GstBuffer *outbuf = NULL; - GstClockTime out_timestamp; - gboolean keyframe, out_keyframe; - - gst_buffer_map (nal, &map, GST_MAP_READ); - if (G_UNLIKELY (map.size < 5)) - goto short_nal; - - nal_type = (map.data[4] >> 1) & 0x3f; - GST_DEBUG_OBJECT (rtph265depay, "handle NAL type %d (RTP marker bit %d)", - nal_type, marker); - - keyframe = NAL_TYPE_IS_KEY (nal_type); - - out_keyframe = keyframe; - out_timestamp = in_timestamp; - - if (!rtph265depay->byte_stream) { - if (NAL_TYPE_IS_PARAMETER_SET (nal_type)) { - gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay, - gst_buffer_copy_region (nal, GST_BUFFER_COPY_ALL, - 4, gst_buffer_get_size (nal) - 4)); - gst_buffer_unmap (nal, &map); - gst_buffer_unref (nal); - return NULL; - } else if (rtph265depay->sps->len == 0 || rtph265depay->pps->len == 0) { - /* Down push down any buffer in non-bytestream mode if the SPS/PPS haven't - * go through yet - */ - gst_pad_push_event (GST_RTP_BASE_DEPAYLOAD_SINKPAD (depayload), - gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM, - gst_structure_new ("GstForceKeyUnit", - "all-headers", G_TYPE_BOOLEAN, TRUE, NULL))); - gst_buffer_unmap (nal, &map); - gst_buffer_unref (nal); - return NULL; - } - - if (rtph265depay->new_codec_data && - rtph265depay->sps->len > 0 && rtph265depay->pps->len > 0) - gst_rtp_h265_set_src_caps (rtph265depay); - } - - if (rtph265depay->merge) { - gboolean start = FALSE, complete = FALSE; - - /* marker bit isn't mandatory so in the following code we try to detect - * an AU boundary (see H.265 spec section 7.4.2.4.4) */ - if (!marker) { - if (NAL_TYPE_IS_CODED_SLICE_SEGMENT (nal_type)) { - /* 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 */ - start = TRUE; - if (((map.data[6] >> 7) & 0x01) == 1) { - complete = TRUE; - } - } else if ((nal_type >= 32 && nal_type <= 35) - || nal_type == 39 || (nal_type >= 41 && nal_type <= 44) - || (nal_type >= 48 && nal_type <= 55)) { - /* VPS, SPS, PPS, SEI, ... terminate an access unit */ - complete = TRUE; - } - GST_DEBUG_OBJECT (depayload, "start %d, complete %d", start, complete); - - if (complete && rtph265depay->picture_start) - outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp, - &out_keyframe); - } - /* add to adapter */ - gst_buffer_unmap (nal, &map); - - GST_DEBUG_OBJECT (depayload, "adding NAL to picture adapter"); - gst_adapter_push (rtph265depay->picture_adapter, nal); - rtph265depay->last_ts = in_timestamp; - rtph265depay->last_keyframe |= keyframe; - rtph265depay->picture_start |= start; - - if (marker) - outbuf = gst_rtp_h265_complete_au (rtph265depay, &out_timestamp, - &out_keyframe); - } else { - /* no merge, output is input nal */ - GST_DEBUG_OBJECT (depayload, "using NAL as output"); - outbuf = nal; - gst_buffer_unmap (nal, &map); - } - - if (outbuf) { - /* prepend codec_data */ - if (rtph265depay->codec_data) { - GST_DEBUG_OBJECT (depayload, "prepending codec_data"); - gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), - rtph265depay->codec_data, outbuf, - g_quark_from_static_string (GST_META_TAG_VIDEO_STR)); - outbuf = gst_buffer_append (rtph265depay->codec_data, outbuf); - rtph265depay->codec_data = NULL; - out_keyframe = TRUE; - } - outbuf = gst_buffer_make_writable (outbuf); - - gst_rtp_drop_meta (GST_ELEMENT_CAST (rtph265depay), outbuf, - g_quark_from_static_string (GST_META_TAG_VIDEO_STR)); - - GST_BUFFER_PTS (outbuf) = out_timestamp; - - if (out_keyframe) - GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT); - else - GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT); - } - - return outbuf; - - /* ERRORS */ -short_nal: - { - GST_WARNING_OBJECT (depayload, "dropping short NAL"); - gst_buffer_unmap (nal, &map); - gst_buffer_unref (nal); - return NULL; - } -} - -static GstBuffer * -gst_rtp_h265_push_fragmentation_unit (GstRtpH265Depay * rtph265depay, - gboolean send) -{ - guint outsize; - GstMapInfo map; - GstBuffer *outbuf; - - outsize = gst_adapter_available (rtph265depay->adapter); - outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize); - - gst_buffer_map (outbuf, &map, GST_MAP_WRITE); - GST_DEBUG_OBJECT (rtph265depay, "output %d bytes", outsize); - - if (rtph265depay->byte_stream) { - memcpy (map.data, sync_bytes, sizeof (sync_bytes)); - } else { - goto not_implemented; - } - gst_buffer_unmap (outbuf, &map); - - rtph265depay->current_fu_type = 0; - - outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, - rtph265depay->fu_timestamp, rtph265depay->fu_marker); - - if (send && outbuf) { - gst_rtp_base_depayload_push (GST_RTP_BASE_DEPAYLOAD (rtph265depay), outbuf); - outbuf = NULL; - } - return outbuf; - -not_implemented: - { - GST_ERROR_OBJECT (rtph265depay, - ("Only bytestream format is currently supported.")); - gst_buffer_unmap (outbuf, &map); - return NULL; - } -} - -static GstBuffer * -gst_rtp_h265_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp) -{ - GstRtpH265Depay *rtph265depay; - GstBuffer *outbuf = NULL; - guint8 nal_unit_type; - - rtph265depay = GST_RTP_H265_DEPAY (depayload); - - /* flush remaining data on discont */ - if (GST_BUFFER_IS_DISCONT (rtp->buffer)) { - gst_adapter_clear (rtph265depay->adapter); - rtph265depay->wait_start = TRUE; - rtph265depay->current_fu_type = 0; - } - - { - gint payload_len; - guint8 *payload; - guint header_len; - GstMapInfo map; - guint outsize, nalu_size; - GstClockTime timestamp; - gboolean marker; - guint8 nuh_layer_id, nuh_temporal_id_plus1; - guint8 S, E; - guint16 nal_header; -#if 0 - gboolean donl_present = FALSE; -#endif - - timestamp = GST_BUFFER_PTS (rtp->buffer); - - payload_len = gst_rtp_buffer_get_payload_len (rtp); - payload = gst_rtp_buffer_get_payload (rtp); - marker = gst_rtp_buffer_get_marker (rtp); - - GST_DEBUG_OBJECT (rtph265depay, "receiving %d bytes", payload_len); - - if (payload_len == 0) - goto empty_packet; - - /* +---------------+---------------+ - * |0|1|2|3|4|5|6|7|0|1|2|3|4|5|6|7| - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * |F| Type | LayerId | TID | - * +-------------+-----------------+ - * - * F must be 0. - * - */ - nal_unit_type = (payload[0] >> 1) & 0x3f; - nuh_layer_id = ((payload[0] & 0x01) << 5) | (payload[1] >> 3); /* should be zero for now but this could change in future HEVC extensions */ - nuh_temporal_id_plus1 = payload[1] & 0x03; - - /* At least two byte header with type */ - header_len = 2; - - GST_DEBUG_OBJECT (rtph265depay, - "NAL header nal_unit_type %d, nuh_temporal_id_plus1 %d", nal_unit_type, - nuh_temporal_id_plus1); - - GST_FIXME_OBJECT (rtph265depay, "Assuming DONL field is not present"); - - /* FIXME - assuming DONL field is not present for now */ - /*donl_present = (tx-mode == "MST") || (sprop-max-don-diff > 0); */ - - /* If FU unit was being processed, but the current nal is of a different - * type. Assume that the remote payloader is buggy (didn't set the end bit - * when the FU ended) and send out what we gathered thusfar */ - if (G_UNLIKELY (rtph265depay->current_fu_type != 0 && - nal_unit_type != rtph265depay->current_fu_type)) - gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE); - - switch (nal_unit_type) { - case 48: - { - GST_DEBUG_OBJECT (rtph265depay, "Processing aggregation packet"); - - /* Aggregation packet (section 4.7) */ - - /* An example of an AP packet containing two aggregation units - without the DONL and DOND fields - - 0 1 2 3 - 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 - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | RTP Header | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | PayloadHdr (Type=48) | NALU 1 Size | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | NALU 1 HDR | | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ NALU 1 Data | - | . . . | - | | - + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | . . . | NALU 2 Size | NALU 2 HDR | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | NALU 2 HDR | | - +-+-+-+-+-+-+-+-+ NALU 2 Data | - | . . . | - | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | :...OPTIONAL RTP padding | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - */ - - /* strip headers */ - payload += header_len; - payload_len -= header_len; - - rtph265depay->wait_start = FALSE; - -#if 0 - if (donl_present) - goto not_implemented_donl_present; -#endif - - while (payload_len > 2) { - - nalu_size = (payload[0] << 8) | payload[1]; - - /* dont include nalu_size */ - if (nalu_size > (payload_len - 2)) - nalu_size = payload_len - 2; - - outsize = nalu_size + sizeof (sync_bytes); - outbuf = gst_buffer_new_and_alloc (outsize); - - gst_buffer_map (outbuf, &map, GST_MAP_WRITE); - if (rtph265depay->byte_stream) { - memcpy (map.data, sync_bytes, sizeof (sync_bytes)); - } else { - goto not_implemented; - } - - /* strip NALU size */ - payload += 2; - payload_len -= 2; - - memcpy (map.data + sizeof (sync_bytes), payload, nalu_size); - gst_buffer_unmap (outbuf, &map); - - gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf, - rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR)); - - outbuf = - gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp, - marker); - if (outbuf) - gst_adapter_push (rtph265depay->adapter, outbuf); - - payload += nalu_size; - payload_len -= nalu_size; - } - - outsize = gst_adapter_available (rtph265depay->adapter); - if (outsize > 0) { - outbuf = gst_adapter_take_buffer (rtph265depay->adapter, outsize); - outbuf = - gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp, - marker); - } - break; - } - case 49: - { - GST_DEBUG_OBJECT (rtph265depay, "Processing Fragmentation Unit"); - - /* Fragmentation units (FUs) Section 4.8 */ - - /* The structure of a Fragmentation Unit (FU) - * - * 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 - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | PayloadHdr (Type=49) | FU header | DONL (cond) | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-| - | DONL (cond) | | - |-+-+-+-+-+-+-+-+ | - | FU payload | - | | - | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | :...OPTIONAL RTP padding | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * - * - */ - - /* strip headers */ - payload += header_len; - payload_len -= header_len; - - /* processing FU header */ - S = (payload[0] & 0x80) == 0x80; - E = (payload[0] & 0x40) == 0x40; - - GST_DEBUG_OBJECT (rtph265depay, - "FU header with S %d, E %d, nal_unit_type %d", S, E, - payload[0] & 0x3f); - - if (rtph265depay->wait_start && !S) - goto waiting_start; - -#if 0 - if (donl_present) - goto not_implemented_donl_present; -#endif - - if (S) { - - GST_DEBUG_OBJECT (rtph265depay, "Start of Fragmentation Unit"); - - /* If a new FU unit started, while still processing an older one. - * Assume that the remote payloader is buggy (doesn't set the end - * bit) and send out what we've gathered thusfar */ - if (G_UNLIKELY (rtph265depay->current_fu_type != 0)) - gst_rtp_h265_push_fragmentation_unit (rtph265depay, TRUE); - - rtph265depay->current_fu_type = nal_unit_type; - rtph265depay->fu_timestamp = timestamp; - - rtph265depay->wait_start = FALSE; - - /* reconstruct NAL header */ - nal_header = - ((payload[0] & 0x3f) << 9) | (nuh_layer_id << 3) | - nuh_temporal_id_plus1; - - /* go back one byte so we can copy the payload + two bytes more in the front which - * will be overwritten by the nal_header - */ - payload -= 1; - payload_len += 1; - - nalu_size = payload_len; - outsize = nalu_size + sizeof (sync_bytes); - outbuf = gst_buffer_new_and_alloc (outsize); - - gst_buffer_map (outbuf, &map, GST_MAP_WRITE); - memcpy (map.data + sizeof (sync_bytes), payload, nalu_size); - map.data[sizeof (sync_bytes)] = nal_header >> 8; - map.data[sizeof (sync_bytes) + 1] = nal_header & 0xff; - gst_buffer_unmap (outbuf, &map); - - gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf, - rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR)); - - GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize); - - /* and assemble in the adapter */ - gst_adapter_push (rtph265depay->adapter, outbuf); - } else { - - GST_DEBUG_OBJECT (rtph265depay, - "Following part of Fragmentation Unit"); - - /* strip off FU header byte */ - payload += 1; - payload_len -= 1; - - outsize = payload_len; - outbuf = gst_buffer_new_and_alloc (outsize); - gst_buffer_fill (outbuf, 0, payload, outsize); - - gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf, - rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR)); - - GST_DEBUG_OBJECT (rtph265depay, "queueing %d bytes", outsize); - - /* and assemble in the adapter */ - gst_adapter_push (rtph265depay->adapter, outbuf); - } - - outbuf = NULL; - rtph265depay->fu_marker = marker; - - /* if NAL unit ends, flush the adapter */ - if (E) { - outbuf = gst_rtp_h265_push_fragmentation_unit (rtph265depay, FALSE); - GST_DEBUG_OBJECT (rtph265depay, "End of Fragmentation Unit"); - } - break; - } - case 50: - goto not_implemented; /* PACI packets Section 4.9 */ - default: - { - rtph265depay->wait_start = FALSE; - - /* All other cases: Single NAL unit packet Section 4.6 */ - /* the entire payload is the output buffer */ - -#if 0 - if (donl_present) - goto not_implemented_donl_present; -#endif - - nalu_size = payload_len; - outsize = nalu_size + sizeof (sync_bytes); - outbuf = gst_buffer_new_and_alloc (outsize); - - gst_buffer_map (outbuf, &map, GST_MAP_WRITE); - if (rtph265depay->byte_stream) { - memcpy (map.data, sync_bytes, sizeof (sync_bytes)); - } else { - goto not_implemented; - } - memcpy (map.data + sizeof (sync_bytes), payload, nalu_size); - gst_buffer_unmap (outbuf, &map); - - gst_rtp_copy_meta (GST_ELEMENT_CAST (rtph265depay), outbuf, - rtp->buffer, g_quark_from_static_string (GST_META_TAG_VIDEO_STR)); - - outbuf = gst_rtp_h265_depay_handle_nal (rtph265depay, outbuf, timestamp, - marker); - break; - } - } - } - - return outbuf; - - /* ERRORS */ -empty_packet: - { - GST_DEBUG_OBJECT (rtph265depay, "empty packet"); - return NULL; - } -waiting_start: - { - GST_DEBUG_OBJECT (rtph265depay, "waiting for start"); - return NULL; - } -#if 0 -not_implemented_donl_present: - { - GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT, - (NULL), ("DONL field present not supported yet")); - return NULL; - } -#endif -not_implemented: - { - GST_ELEMENT_ERROR (rtph265depay, STREAM, FORMAT, - (NULL), ("NAL unit type %d not supported yet", nal_unit_type)); - return NULL; - } -} - -static gboolean -gst_rtp_h265_depay_handle_event (GstRTPBaseDepayload * depay, GstEvent * event) -{ - GstRtpH265Depay *rtph265depay; - - rtph265depay = GST_RTP_H265_DEPAY (depay); - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_FLUSH_STOP: - gst_rtp_h265_depay_reset (rtph265depay); - break; - default: - break; - } - - return - GST_RTP_BASE_DEPAYLOAD_CLASS (parent_class)->handle_event (depay, event); -} - -static GstStateChangeReturn -gst_rtp_h265_depay_change_state (GstElement * element, - GstStateChange transition) -{ - GstRtpH265Depay *rtph265depay; - GstStateChangeReturn ret; - - rtph265depay = GST_RTP_H265_DEPAY (element); - - switch (transition) { - case GST_STATE_CHANGE_NULL_TO_READY: - break; - case GST_STATE_CHANGE_READY_TO_PAUSED: - gst_rtp_h265_depay_reset (rtph265depay); - break; - default: - break; - } - - ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - - switch (transition) { - case GST_STATE_CHANGE_READY_TO_NULL: - break; - default: - break; - } - return ret; -} - -gboolean -gst_rtp_h265_depay_plugin_init (GstPlugin * plugin) -{ - GST_DEBUG_CATEGORY_INIT (rtph265depay_debug, "rtph265depay", 0, - "H265 Video RTP Depayloader"); - - return gst_element_register (plugin, "rtph265depay", - GST_RANK_SECONDARY, GST_TYPE_RTP_H265_DEPAY); -} |