| /* 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 <string.h> |
| #include <stdlib.h> |
| |
| #include <gst/rtp/gstrtpbuffer.h> |
| #include <gst/pbutils/pbutils.h> |
| #include <gst/video/video.h> |
| |
| /* Included to not duplicate gst_rtp_h265_add_vps_sps_pps () */ |
| #include "gstrtph265depay.h" |
| |
| #include "gstrtph265pay.h" |
| #include "gstrtputils.h" |
| |
| GST_DEBUG_CATEGORY_STATIC (rtph265pay_debug); |
| #define GST_CAT_DEFAULT (rtph265pay_debug) |
| |
| /* references: |
| * |
| * Internet Draft RTP Payload Format for High Efficiency Video Coding |
| * |
| * draft-ietf-payload-rtp-h265-03.txt |
| * |
| * This draft will be replaced with an RFC, so some details may change. |
| * |
| */ |
| |
| static GstStaticPadTemplate gst_rtp_h265_pay_sink_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ( |
| /* only hvc1 and byte-stream formats supported for now */ |
| "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_pay_src_template = |
| GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("application/x-rtp, " |
| "media = (string) \"video\", " |
| "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", " |
| "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 DEFAULT_CONFIG_INTERVAL 0 |
| |
| enum |
| { |
| PROP_0, |
| PROP_CONFIG_INTERVAL |
| }; |
| |
| #define IS_ACCESS_UNIT(x) (((x) >= 0x00) && ((x) < 0x20)) |
| |
| static void gst_rtp_h265_pay_finalize (GObject * object); |
| |
| static void gst_rtp_h265_pay_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_rtp_h265_pay_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| |
| static GstCaps *gst_rtp_h265_pay_getcaps (GstRTPBasePayload * payload, |
| GstPad * pad, GstCaps * filter); |
| static gboolean gst_rtp_h265_pay_setcaps (GstRTPBasePayload * basepayload, |
| GstCaps * caps); |
| static GstFlowReturn gst_rtp_h265_pay_handle_buffer (GstRTPBasePayload * pad, |
| GstBuffer * buffer); |
| static gboolean gst_rtp_h265_pay_sink_event (GstRTPBasePayload * payload, |
| GstEvent * event); |
| static GstStateChangeReturn gst_rtp_h265_pay_change_state (GstElement * |
| element, GstStateChange transition); |
| |
| #define gst_rtp_h265_pay_parent_class parent_class |
| G_DEFINE_TYPE (GstRtpH265Pay, gst_rtp_h265_pay, GST_TYPE_RTP_BASE_PAYLOAD); |
| |
| static void |
| gst_rtp_h265_pay_class_init (GstRtpH265PayClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstElementClass *gstelement_class; |
| GstRTPBasePayloadClass *gstrtpbasepayload_class; |
| |
| gobject_class = (GObjectClass *) klass; |
| gstelement_class = (GstElementClass *) klass; |
| gstrtpbasepayload_class = (GstRTPBasePayloadClass *) klass; |
| |
| gobject_class->set_property = gst_rtp_h265_pay_set_property; |
| gobject_class->get_property = gst_rtp_h265_pay_get_property; |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), |
| PROP_CONFIG_INTERVAL, |
| g_param_spec_int ("config-interval", |
| "VPS SPS PPS Send Interval", |
| "Send VPS, SPS and PPS Insertion Interval in seconds (sprop parameter sets " |
| "will be multiplexed in the data stream when detected.) " |
| "(0 = disabled, -1 = send with every IDR frame)", |
| -1, 3600, DEFAULT_CONFIG_INTERVAL, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS) |
| ); |
| |
| gobject_class->finalize = gst_rtp_h265_pay_finalize; |
| |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_h265_pay_src_template); |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_h265_pay_sink_template); |
| |
| gst_element_class_set_static_metadata (gstelement_class, "RTP H265 payloader", |
| "Codec/Payloader/Network/RTP", |
| "Payload-encode H265 video into RTP packets (RFC 7798)", |
| "Jurgen Slowack <jurgenslowack@gmail.com>"); |
| |
| gstelement_class->change_state = |
| GST_DEBUG_FUNCPTR (gst_rtp_h265_pay_change_state); |
| |
| gstrtpbasepayload_class->get_caps = gst_rtp_h265_pay_getcaps; |
| gstrtpbasepayload_class->set_caps = gst_rtp_h265_pay_setcaps; |
| gstrtpbasepayload_class->handle_buffer = gst_rtp_h265_pay_handle_buffer; |
| gstrtpbasepayload_class->sink_event = gst_rtp_h265_pay_sink_event; |
| |
| GST_DEBUG_CATEGORY_INIT (rtph265pay_debug, "rtph265pay", 0, |
| "H265 RTP Payloader"); |
| } |
| |
| static void |
| gst_rtp_h265_pay_init (GstRtpH265Pay * rtph265pay) |
| { |
| rtph265pay->queue = g_array_new (FALSE, FALSE, sizeof (guint)); |
| rtph265pay->sps = g_ptr_array_new_with_free_func ( |
| (GDestroyNotify) gst_buffer_unref); |
| rtph265pay->pps = g_ptr_array_new_with_free_func ( |
| (GDestroyNotify) gst_buffer_unref); |
| rtph265pay->vps = g_ptr_array_new_with_free_func ( |
| (GDestroyNotify) gst_buffer_unref); |
| rtph265pay->last_vps_sps_pps = -1; |
| rtph265pay->vps_sps_pps_interval = DEFAULT_CONFIG_INTERVAL; |
| |
| rtph265pay->adapter = gst_adapter_new (); |
| } |
| |
| static void |
| gst_rtp_h265_pay_clear_vps_sps_pps (GstRtpH265Pay * rtph265pay) |
| { |
| g_ptr_array_set_size (rtph265pay->vps, 0); |
| g_ptr_array_set_size (rtph265pay->sps, 0); |
| g_ptr_array_set_size (rtph265pay->pps, 0); |
| } |
| |
| static void |
| gst_rtp_h265_pay_finalize (GObject * object) |
| { |
| GstRtpH265Pay *rtph265pay; |
| |
| rtph265pay = GST_RTP_H265_PAY (object); |
| |
| g_array_free (rtph265pay->queue, TRUE); |
| |
| g_ptr_array_free (rtph265pay->sps, TRUE); |
| g_ptr_array_free (rtph265pay->pps, TRUE); |
| g_ptr_array_free (rtph265pay->vps, TRUE); |
| |
| g_object_unref (rtph265pay->adapter); |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| static const gchar all_levels[][4] = { |
| "1", |
| "2", |
| "2.1", |
| "3", |
| "3.1", |
| "4", |
| "4.1", |
| "5", |
| "5.1", |
| "5.2", |
| "6", |
| "6.1", |
| "6.2" |
| }; |
| |
| static gboolean |
| parse_field (GstStructure * s, const gchar * field, gulong min, gulong max, |
| guint8 * result) |
| { |
| const gchar *str; |
| |
| g_assert (result != NULL); |
| |
| str = gst_structure_get_string (s, field); |
| if (str != NULL && *str != '\0') { |
| gulong value; |
| gchar *end; |
| |
| value = strtoul (str, &end, 10); |
| if (*end == '\0' && value >= min && value <= max) { |
| *result = (guint8) value; |
| } else { |
| return FALSE; |
| } |
| } else { |
| return FALSE; |
| } |
| |
| return TRUE; |
| } |
| |
| static GstCaps * |
| gst_rtp_h265_pay_getcaps (GstRTPBasePayload * payload, GstPad * pad, |
| GstCaps * filter) |
| { |
| GstCaps *template_caps; |
| GstCaps *allowed_caps; |
| GstCaps *caps; |
| GstCaps *icaps; |
| guint i; |
| |
| allowed_caps = |
| gst_pad_peer_query_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload), NULL); |
| |
| if (allowed_caps == NULL) |
| return NULL; |
| |
| template_caps = |
| gst_static_pad_template_get_caps (&gst_rtp_h265_pay_sink_template); |
| |
| if (gst_caps_is_any (allowed_caps)) { |
| caps = gst_caps_ref (template_caps); |
| goto done; |
| } |
| |
| if (gst_caps_is_empty (allowed_caps)) { |
| caps = gst_caps_ref (allowed_caps); |
| goto done; |
| } |
| |
| caps = gst_caps_new_empty (); |
| for (i = 0; i < gst_caps_get_size (allowed_caps); i++) { |
| GstStructure *s = gst_caps_get_structure (allowed_caps, i); |
| GstStructure *new_s = gst_structure_new_empty ("video/x-h265"); |
| guint8 ptl[12] = { 0, }; |
| guint8 value; |
| |
| if (parse_field (s, "profile-id", 0, 31, &value)) { |
| const gchar *profile; |
| |
| ptl[0] = value; |
| profile = gst_codec_utils_h265_get_profile (ptl, sizeof (ptl)); |
| if (profile != NULL) { |
| GST_DEBUG_OBJECT (payload, "profile %s", profile); |
| gst_structure_set (new_s, "profile", G_TYPE_STRING, profile, NULL); |
| } else { |
| GST_WARNING_OBJECT (payload, "invalid profile-id %d in caps", value); |
| } |
| } else { |
| GST_DEBUG_OBJECT (payload, "no valid profile-id in caps"); |
| } |
| |
| if (parse_field (s, "tier-flag", 0, 1, &value)) { |
| const gchar *tier; |
| |
| ptl[0] |= value << 5; |
| tier = gst_codec_utils_h265_get_tier (ptl, sizeof (ptl)); |
| GST_DEBUG_OBJECT (payload, "tier %s", tier); |
| gst_structure_set (new_s, "tier", G_TYPE_STRING, tier, NULL); |
| } else { |
| GST_DEBUG_OBJECT (payload, "no valid tier-flag in caps"); |
| } |
| |
| if (parse_field (s, "level-id", 0, 255, &value)) { |
| const gchar *level; |
| |
| ptl[11] = value; |
| level = gst_codec_utils_h265_get_level (ptl, sizeof (ptl)); |
| if (level != NULL) { |
| GST_DEBUG_OBJECT (payload, "level %s", level); |
| if (strcmp (level, "1") == 0) { |
| gst_structure_set (new_s, "level", G_TYPE_STRING, level, NULL); |
| } else { |
| GValue levels = { 0, }; |
| GValue val = { 0, }; |
| int j; |
| |
| g_value_init (&levels, GST_TYPE_LIST); |
| g_value_init (&val, G_TYPE_STRING); |
| |
| for (j = 0; j < G_N_ELEMENTS (all_levels); j++) { |
| g_value_set_static_string (&val, all_levels[j]); |
| gst_value_list_prepend_value (&levels, &val); |
| if (!strcmp (level, all_levels[j])) |
| break; |
| } |
| gst_structure_take_value (new_s, "level", &levels); |
| } |
| } else { |
| GST_WARNING_OBJECT (payload, "invalid level-id %d in caps", value); |
| } |
| } else { |
| GST_DEBUG_OBJECT (payload, "no valid level-id in caps"); |
| } |
| |
| caps = gst_caps_merge_structure (caps, new_s); |
| } |
| |
| icaps = gst_caps_intersect (caps, template_caps); |
| gst_caps_unref (caps); |
| caps = icaps; |
| |
| done: |
| |
| if (filter) { |
| GstCaps *tmp; |
| |
| GST_DEBUG_OBJECT (payload, "Intersect %" GST_PTR_FORMAT " and filter %" |
| GST_PTR_FORMAT, caps, filter); |
| tmp = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST); |
| gst_caps_unref (caps); |
| caps = tmp; |
| } |
| |
| gst_caps_unref (template_caps); |
| gst_caps_unref (allowed_caps); |
| |
| GST_LOG_OBJECT (payload, "returning caps %" GST_PTR_FORMAT, caps); |
| return caps; |
| } |
| |
| /* take the currently configured VPS, SPS and PPS lists and set them on the |
| * caps */ |
| static gboolean |
| gst_rtp_h265_pay_set_vps_sps_pps (GstRTPBasePayload * basepayload) |
| { |
| GstRtpH265Pay *payloader = GST_RTP_H265_PAY (basepayload); |
| gchar *set; |
| GString *vps; |
| GString *sps; |
| GString *pps; |
| guint count; |
| gboolean res; |
| GstMapInfo map; |
| guint i; |
| |
| vps = g_string_new (""); |
| sps = g_string_new (""); |
| pps = g_string_new (""); |
| count = 0; |
| |
| for (i = 0; i < payloader->vps->len; i++) { |
| GstBuffer *vps_buf = |
| GST_BUFFER_CAST (g_ptr_array_index (payloader->vps, i)); |
| |
| gst_buffer_map (vps_buf, &map, GST_MAP_READ); |
| set = g_base64_encode (map.data, map.size); |
| gst_buffer_unmap (vps_buf, &map); |
| |
| g_string_append_printf (vps, "%s%s", i ? "," : "", set); |
| g_free (set); |
| count++; |
| } |
| for (i = 0; i < payloader->sps->len; i++) { |
| GstBuffer *sps_buf = |
| GST_BUFFER_CAST (g_ptr_array_index (payloader->sps, i)); |
| |
| gst_buffer_map (sps_buf, &map, GST_MAP_READ); |
| set = g_base64_encode (map.data, map.size); |
| gst_buffer_unmap (sps_buf, &map); |
| |
| g_string_append_printf (sps, "%s%s", i ? "," : "", set); |
| g_free (set); |
| count++; |
| } |
| for (i = 0; i < payloader->pps->len; i++) { |
| GstBuffer *pps_buf = |
| GST_BUFFER_CAST (g_ptr_array_index (payloader->pps, i)); |
| |
| gst_buffer_map (pps_buf, &map, GST_MAP_READ); |
| set = g_base64_encode (map.data, map.size); |
| gst_buffer_unmap (pps_buf, &map); |
| |
| g_string_append_printf (pps, "%s%s", i ? "," : "", set); |
| g_free (set); |
| count++; |
| } |
| |
| if (G_LIKELY (count)) { |
| /* combine into output caps */ |
| res = gst_rtp_base_payload_set_outcaps (basepayload, |
| "sprop-vps", G_TYPE_STRING, vps->str, |
| "sprop-sps", G_TYPE_STRING, sps->str, |
| "sprop-pps", G_TYPE_STRING, pps->str, NULL); |
| } else { |
| res = gst_rtp_base_payload_set_outcaps (basepayload, NULL); |
| } |
| g_string_free (vps, TRUE); |
| g_string_free (sps, TRUE); |
| g_string_free (pps, TRUE); |
| |
| return res; |
| } |
| |
| |
| static gboolean |
| gst_rtp_h265_pay_setcaps (GstRTPBasePayload * basepayload, GstCaps * caps) |
| { |
| GstRtpH265Pay *rtph265pay; |
| GstStructure *str; |
| const GValue *value; |
| GstMapInfo map; |
| guint8 *data; |
| gsize size; |
| GstBuffer *buffer; |
| const gchar *alignment, *stream_format; |
| guint8 num_arrays; |
| |
| rtph265pay = GST_RTP_H265_PAY (basepayload); |
| |
| str = gst_caps_get_structure (caps, 0); |
| |
| /* we can only set the output caps when we found the sprops and profile |
| * NALs */ |
| gst_rtp_base_payload_set_options (basepayload, "video", TRUE, "H265", 90000); |
| |
| rtph265pay->alignment = GST_H265_ALIGNMENT_UNKNOWN; |
| alignment = gst_structure_get_string (str, "alignment"); |
| if (alignment) { |
| if (g_str_equal (alignment, "au")) |
| rtph265pay->alignment = GST_H265_ALIGNMENT_AU; |
| if (g_str_equal (alignment, "nal")) |
| rtph265pay->alignment = GST_H265_ALIGNMENT_NAL; |
| } |
| |
| rtph265pay->stream_format = GST_H265_STREAM_FORMAT_UNKNOWN; |
| stream_format = gst_structure_get_string (str, "stream-format"); |
| if (stream_format) { |
| if (g_str_equal (stream_format, "hvc1")) |
| rtph265pay->stream_format = GST_H265_STREAM_FORMAT_HVC1; |
| if (g_str_equal (stream_format, "hev1")) |
| rtph265pay->stream_format = GST_H265_STREAM_FORMAT_HEV1; |
| if (g_str_equal (stream_format, "byte-stream")) |
| rtph265pay->stream_format = GST_H265_STREAM_FORMAT_BYTESTREAM; |
| } |
| |
| /* packetized HEVC video has a codec_data */ |
| if ((value = gst_structure_get_value (str, "codec_data"))) { |
| guint num_vps, num_sps, num_pps; |
| gint i, j, nal_size; |
| |
| GST_DEBUG_OBJECT (rtph265pay, "have packetized h265"); |
| |
| buffer = gst_value_get_buffer (value); |
| |
| gst_buffer_map (buffer, &map, GST_MAP_READ); |
| data = map.data; |
| size = map.size; |
| |
| /* parse the hevcC data */ |
| if (size < 23) |
| goto hevcc_too_small; |
| /* HEVCDecoderConfigurationVersion (must be 1) */ |
| if (data[0] != 1) |
| goto wrong_version; |
| |
| /* profile_space | tier_flag | profile_idc */ |
| GST_DEBUG_OBJECT (rtph265pay, "profile %06x", data[1]); |
| |
| /* profile_compatibility_flags */ |
| for (i = 2; i < 6; i++) { |
| for (j = 7; j >= 0; j--) { |
| GST_DEBUG_OBJECT (rtph265pay, "profile_compatibility_flag %06x", |
| (data[i] >> j) & 1); |
| } |
| } |
| |
| GST_DEBUG_OBJECT (rtph265pay, "progressive_source_flag %06x", |
| (data[6] >> 7) & 1); |
| GST_DEBUG_OBJECT (rtph265pay, "interlaced_source_flag %06x", |
| (data[6] >> 6) & 1); |
| GST_DEBUG_OBJECT (rtph265pay, "non_packed_constraint_flag %06x", |
| (data[6] >> 5) & 1); |
| GST_DEBUG_OBJECT (rtph265pay, "frame_only_constraint_flag %06x", |
| (data[6] >> 4) & 1); |
| |
| GST_DEBUG_OBJECT (rtph265pay, "level_idc %06x", data[12]); |
| |
| GST_DEBUG_OBJECT (rtph265pay, "min_spatial_segmentation_idc %06x", |
| ((data[13] ^ 0xf0) << 8) + data[14]); |
| GST_DEBUG_OBJECT (rtph265pay, "parrallelismType %06x (ignored by paloader)", |
| data[15]); |
| |
| GST_DEBUG_OBJECT (rtph265pay, "sps_chroma_format_idc %06x", |
| data[16] ^ 0xfc); |
| GST_DEBUG_OBJECT (rtph265pay, "bit_depth_luma_minus8 %06x", |
| data[17] ^ 0xf8); |
| GST_DEBUG_OBJECT (rtph265pay, "bit_depth_chroma_minus8 %06x", |
| data[18] ^ 0xf8); |
| GST_DEBUG_OBJECT (rtph265pay, "avgFrameRate %06x", data[19]); |
| GST_DEBUG_OBJECT (rtph265pay, "avgFrameRate %06x", data[20]); |
| |
| /* 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 */ |
| GST_DEBUG_OBJECT (rtph265pay, "constFrameRate %06x", |
| (data[21] >> 6) & 0x03); |
| GST_DEBUG_OBJECT (rtph265pay, "numTemporalLayers %06x", |
| (data[21] >> 3) & 0x07); |
| GST_DEBUG_OBJECT (rtph265pay, "temporal_id_nesting_flag %06x", |
| (data[21] >> 2) & 0x01); |
| |
| rtph265pay->nal_length_size = (data[21] & 0x3) + 1; |
| GST_DEBUG_OBJECT (rtph265pay, "nal length %u", rtph265pay->nal_length_size); |
| |
| num_arrays = GST_READ_UINT8 (data + 22); |
| |
| data += 23; |
| size -= 23; |
| |
| if (num_arrays > 0) { |
| if ((data[0] & 0x3f) == 0x20) { /* VPS */ |
| |
| data++; |
| num_vps = data[0] << 8 | data[1]; |
| data += 2; |
| size -= 2; |
| |
| for (i = 0; i < num_vps; i++) { |
| |
| GstBuffer *vps_buf; |
| |
| if (size < 2) |
| goto hevcc_error; |
| |
| nal_size = (data[0] << 8) | data[1]; |
| data += 2; |
| size -= 2; |
| |
| GST_LOG_OBJECT (rtph265pay, "VPS %d size %d", i, nal_size); |
| |
| if (size < nal_size) |
| goto hevcc_error; |
| |
| /* make a buffer out of it and add to VPS list */ |
| vps_buf = gst_buffer_new_and_alloc (nal_size); |
| gst_buffer_fill (vps_buf, 0, data, nal_size); |
| gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265pay), |
| rtph265pay->vps, rtph265pay->sps, rtph265pay->pps, vps_buf); |
| data += nal_size; |
| size -= nal_size; |
| } |
| } |
| |
| --num_arrays; |
| } |
| |
| if (num_arrays > 0) { |
| if ((data[0] & 0x3f) == 0x21) { /* SPS */ |
| |
| data++; |
| num_sps = data[0] << 8 | data[1]; |
| data += 2; |
| size -= 2; |
| |
| for (i = 0; i < num_sps; i++) { |
| |
| GstBuffer *sps_buf; |
| |
| if (size < 2) |
| goto hevcc_error; |
| |
| nal_size = (data[0] << 8) | data[1]; |
| data += 2; |
| size -= 2; |
| |
| GST_LOG_OBJECT (rtph265pay, "SPS %d size %d", i, nal_size); |
| |
| if (size < nal_size) |
| goto hevcc_error; |
| |
| /* make a buffer out of it and add to SPS list */ |
| sps_buf = gst_buffer_new_and_alloc (nal_size); |
| gst_buffer_fill (sps_buf, 0, data, nal_size); |
| gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265pay), |
| rtph265pay->vps, rtph265pay->sps, rtph265pay->pps, sps_buf); |
| data += nal_size; |
| size -= nal_size; |
| } |
| } |
| |
| --num_arrays; |
| } |
| |
| if (num_arrays > 0) { |
| if ((data[0] & 0x3f) == 0x22) { /* PPS */ |
| |
| data++; |
| num_pps = data[0] << 8 | data[1]; |
| data += 2; |
| size -= 2; |
| |
| for (i = 0; i < num_pps; i++) { |
| |
| GstBuffer *pps_buf; |
| |
| if (size < 2) |
| goto hevcc_error; |
| |
| nal_size = (data[0] << 8) | data[1]; |
| data += 2; |
| size -= 2; |
| |
| GST_LOG_OBJECT (rtph265pay, "PPS %d size %d", i, nal_size); |
| |
| if (size < nal_size) |
| goto hevcc_error; |
| |
| /* make a buffer out of it and add to PPS list */ |
| pps_buf = gst_buffer_new_and_alloc (nal_size); |
| gst_buffer_fill (pps_buf, 0, data, nal_size); |
| gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (rtph265pay), |
| rtph265pay->vps, rtph265pay->sps, rtph265pay->pps, pps_buf); |
| data += nal_size; |
| size -= nal_size; |
| } |
| } |
| |
| --num_arrays; |
| } |
| |
| /* and update the caps with the collected data */ |
| if (!gst_rtp_h265_pay_set_vps_sps_pps (basepayload)) |
| goto set_vps_sps_pps_failed; |
| |
| GST_DEBUG_OBJECT (rtph265pay, "Caps have been set"); |
| |
| gst_buffer_unmap (buffer, &map); |
| } else { |
| GST_DEBUG_OBJECT (rtph265pay, "have bytestream h265"); |
| } |
| |
| return TRUE; |
| |
| hevcc_too_small: |
| { |
| GST_ERROR_OBJECT (rtph265pay, "hevcC size %" G_GSIZE_FORMAT " < 7", size); |
| goto error; |
| } |
| wrong_version: |
| { |
| GST_ERROR_OBJECT (rtph265pay, "wrong hevcC version"); |
| goto error; |
| } |
| hevcc_error: |
| { |
| GST_ERROR_OBJECT (rtph265pay, "hevcC too small "); |
| goto error; |
| } |
| set_vps_sps_pps_failed: |
| { |
| GST_ERROR_OBJECT (rtph265pay, "failed to set vps/sps/pps"); |
| goto error; |
| } |
| error: |
| { |
| gst_buffer_unmap (buffer, &map); |
| return FALSE; |
| } |
| } |
| |
| static guint |
| next_start_code (const guint8 * data, guint size) |
| { |
| /* Boyer-Moore string matching algorithm, in a degenerative |
| * sense because our search 'alphabet' is binary - 0 & 1 only. |
| * This allow us to simplify the general BM algorithm to a very |
| * simple form. */ |
| /* assume 1 is in the 3rd byte */ |
| guint offset = 2; |
| |
| while (offset < size) { |
| if (1 == data[offset]) { |
| unsigned int shift = offset; |
| |
| if (0 == data[--shift]) { |
| if (0 == data[--shift]) { |
| return shift; |
| } |
| } |
| /* The jump is always 3 because of the 1 previously matched. |
| * All the 0's must be after this '1' matched at offset */ |
| offset += 3; |
| } else if (0 == data[offset]) { |
| /* maybe next byte is 1? */ |
| offset++; |
| } else { |
| /* can jump 3 bytes forward */ |
| offset += 3; |
| } |
| /* at each iteration, we rescan in a backward manner until |
| * we match 0.0.1 in reverse order. Since our search string |
| * has only 2 'alpabets' (i.e. 0 & 1), we know that any |
| * mismatch will force us to shift a fixed number of steps */ |
| } |
| GST_DEBUG ("Cannot find next NAL start code. returning %u", size); |
| |
| return size; |
| } |
| |
| static gboolean |
| gst_rtp_h265_pay_decode_nal (GstRtpH265Pay * payloader, |
| const guint8 * data, guint size, GstClockTime dts, GstClockTime pts) |
| { |
| guint8 type; |
| gboolean updated; |
| |
| /* default is no update */ |
| updated = FALSE; |
| |
| GST_DEBUG_OBJECT (payloader, "NAL payload size %u", size); |
| |
| type = (data[0] >> 1) & 0x3f; |
| |
| /* We record the timestamp of the last SPS/PPS so |
| * that we can insert them at regular intervals and when needed. */ |
| if (GST_H265_NAL_VPS == type || GST_H265_NAL_SPS == type |
| || GST_H265_NAL_PPS == type) { |
| GstBuffer *nal; |
| |
| /* trailing 0x0 are not part of the VPS/SPS/PPS */ |
| while (size > 0 && data[size - 1] == 0x0) |
| size--; |
| |
| /* encode the entire NAL in base64 */ |
| GST_DEBUG_OBJECT (payloader, "found %s (type 0x%x), size %u", |
| type == GST_H265_NAL_VPS ? "VPS" : type == GST_H265_NAL_SPS ? |
| "SPS" : "PPS", type, size); |
| |
| nal = gst_buffer_new_allocate (NULL, size, NULL); |
| gst_buffer_fill (nal, 0, data, size); |
| |
| updated = gst_rtp_h265_add_vps_sps_pps (GST_ELEMENT (payloader), |
| payloader->vps, payloader->sps, payloader->pps, nal); |
| |
| /* remember when we last saw VPS */ |
| if (updated && pts != -1) |
| payloader->last_vps_sps_pps = |
| gst_segment_to_running_time (&GST_RTP_BASE_PAYLOAD_CAST |
| (payloader)->segment, GST_FORMAT_TIME, pts); |
| } else { |
| GST_DEBUG_OBJECT (payloader, "NALU type 0x%x, size %u", type, size); |
| } |
| |
| return updated; |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h265_pay_payload_nal (GstRTPBasePayload * basepayload, |
| GPtrArray * paybufs, GstClockTime dts, GstClockTime pts); |
| |
| static GstFlowReturn |
| gst_rtp_h265_pay_send_vps_sps_pps (GstRTPBasePayload * basepayload, |
| GstRtpH265Pay * rtph265pay, GstClockTime dts, GstClockTime pts) |
| { |
| GstFlowReturn ret = GST_FLOW_OK; |
| gboolean sent_all_vps_sps_pps = TRUE; |
| guint i; |
| GPtrArray *bufs; |
| |
| bufs = g_ptr_array_new (); |
| |
| for (i = 0; i < rtph265pay->vps->len; i++) { |
| GstBuffer *vps_buf = |
| GST_BUFFER_CAST (g_ptr_array_index (rtph265pay->vps, i)); |
| |
| GST_DEBUG_OBJECT (rtph265pay, "inserting VPS in the stream"); |
| g_ptr_array_add (bufs, gst_buffer_ref (vps_buf)); |
| } |
| for (i = 0; i < rtph265pay->sps->len; i++) { |
| GstBuffer *sps_buf = |
| GST_BUFFER_CAST (g_ptr_array_index (rtph265pay->sps, i)); |
| |
| GST_DEBUG_OBJECT (rtph265pay, "inserting SPS in the stream"); |
| g_ptr_array_add (bufs, gst_buffer_ref (sps_buf)); |
| } |
| for (i = 0; i < rtph265pay->pps->len; i++) { |
| GstBuffer *pps_buf = |
| GST_BUFFER_CAST (g_ptr_array_index (rtph265pay->pps, i)); |
| |
| GST_DEBUG_OBJECT (rtph265pay, "inserting PPS in the stream"); |
| g_ptr_array_add (bufs, gst_buffer_ref (pps_buf)); |
| } |
| |
| ret = gst_rtp_h265_pay_payload_nal (basepayload, bufs, dts, pts); |
| if (ret != GST_FLOW_OK) { |
| /* not critical but warn */ |
| GST_WARNING_OBJECT (basepayload, "failed pushing VPS/SPS/PPS"); |
| |
| sent_all_vps_sps_pps = FALSE; |
| } |
| |
| if (pts != -1 && sent_all_vps_sps_pps) |
| rtph265pay->last_vps_sps_pps = |
| gst_segment_to_running_time (&basepayload->segment, GST_FORMAT_TIME, |
| pts); |
| |
| return ret; |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h265_pay_payload_nal (GstRTPBasePayload * basepayload, |
| GPtrArray * paybufs, GstClockTime dts, GstClockTime pts) |
| { |
| GstRtpH265Pay *rtph265pay; |
| guint mtu; |
| GstFlowReturn ret; |
| gint i; |
| gboolean sent_ps; |
| |
| rtph265pay = GST_RTP_H265_PAY (basepayload); |
| mtu = GST_RTP_BASE_PAYLOAD_MTU (rtph265pay); |
| |
| /* should set src caps before pushing stuff, |
| * and if we did not see enough VPS/SPS/PPS, that may not be the case */ |
| if (G_UNLIKELY (!gst_pad_has_current_caps (GST_RTP_BASE_PAYLOAD_SRCPAD |
| (basepayload)))) |
| gst_rtp_h265_pay_set_vps_sps_pps (basepayload); |
| |
| ret = GST_FLOW_OK; |
| sent_ps = FALSE; |
| for (i = 0; i < paybufs->len; i++) { |
| guint8 nalHeader[2]; |
| guint8 nalType; |
| guint packet_len, payload_len; |
| GstBuffer *paybuf; |
| GstBuffer *outbuf; |
| guint8 *payload; |
| GstBufferList *outlist = NULL; |
| gboolean send_ps; |
| GstRTPBuffer rtp = { NULL }; |
| guint size; |
| |
| paybuf = g_ptr_array_index (paybufs, i); |
| |
| if (ret != GST_FLOW_OK) { |
| /* unref buffers that will not be payloaded after a flow error */ |
| gst_buffer_unref (paybuf); |
| continue; |
| } |
| |
| size = gst_buffer_get_size (paybuf); |
| gst_buffer_extract (paybuf, 0, nalHeader, 2); |
| nalType = (nalHeader[0] >> 1) & 0x3f; |
| |
| GST_DEBUG_OBJECT (rtph265pay, "Processing Buffer with NAL TYPE=%d", |
| nalType); |
| |
| send_ps = FALSE; |
| |
| /* check if we need to emit an VPS/SPS/PPS now */ |
| if ((nalType == GST_H265_NAL_SLICE_TRAIL_N) |
| || (nalType == GST_H265_NAL_SLICE_TRAIL_R) |
| || (nalType == GST_H265_NAL_SLICE_TSA_N) |
| || (nalType == GST_H265_NAL_SLICE_TSA_R) |
| || (nalType == GST_H265_NAL_SLICE_STSA_N) |
| || (nalType == GST_H265_NAL_SLICE_STSA_R) |
| || (nalType == GST_H265_NAL_SLICE_RASL_N) |
| || (nalType == GST_H265_NAL_SLICE_RASL_R) |
| || (nalType == GST_H265_NAL_SLICE_BLA_W_LP) |
| || (nalType == GST_H265_NAL_SLICE_BLA_W_RADL) |
| || (nalType == GST_H265_NAL_SLICE_BLA_N_LP) |
| || (nalType == GST_H265_NAL_SLICE_IDR_W_RADL) |
| || (nalType == GST_H265_NAL_SLICE_IDR_N_LP) |
| || (nalType == GST_H265_NAL_SLICE_CRA_NUT)) { |
| if (rtph265pay->vps_sps_pps_interval > 0) { |
| if (rtph265pay->last_vps_sps_pps != -1) { |
| guint64 diff; |
| GstClockTime running_time = |
| gst_segment_to_running_time (&basepayload->segment, |
| GST_FORMAT_TIME, pts); |
| |
| GST_LOG_OBJECT (rtph265pay, |
| "now %" GST_TIME_FORMAT ", last VPS/SPS/PPS %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (running_time), |
| GST_TIME_ARGS (rtph265pay->last_vps_sps_pps)); |
| |
| /* calculate diff between last SPS/PPS in milliseconds */ |
| if (running_time > rtph265pay->last_vps_sps_pps) |
| diff = running_time - rtph265pay->last_vps_sps_pps; |
| else |
| diff = 0; |
| |
| GST_DEBUG_OBJECT (rtph265pay, |
| "interval since last VPS/SPS/PPS %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (diff)); |
| |
| /* bigger than interval, queue SPS/PPS */ |
| if (GST_TIME_AS_SECONDS (diff) >= rtph265pay->vps_sps_pps_interval) { |
| GST_DEBUG_OBJECT (rtph265pay, "time to send VPS/SPS/PPS"); |
| send_ps = TRUE; |
| } |
| } else { |
| /* no known previous SPS/PPS time, send now */ |
| GST_DEBUG_OBJECT (rtph265pay, |
| "no previous VPS/SPS/PPS time, send now"); |
| send_ps = TRUE; |
| } |
| } else if (rtph265pay->vps_sps_pps_interval == -1 |
| && (nalType == GST_H265_NAL_SLICE_IDR_W_RADL |
| || nalType == GST_H265_NAL_SLICE_IDR_N_LP)) { |
| /* send VPS/SPS/PPS before every IDR frame */ |
| send_ps = TRUE; |
| } |
| } |
| |
| if (!sent_ps && (send_ps || rtph265pay->send_vps_sps_pps)) { |
| /* we need to send SPS/PPS now first. FIXME, don't use the pts for |
| * checking when we need to send SPS/PPS but convert to running_time |
| * first */ |
| rtph265pay->send_vps_sps_pps = FALSE; |
| sent_ps = TRUE; |
| GST_DEBUG_OBJECT (rtph265pay, "sending VPS/SPS/PPS before current frame"); |
| ret = |
| gst_rtp_h265_pay_send_vps_sps_pps (basepayload, rtph265pay, dts, pts); |
| if (ret != GST_FLOW_OK) { |
| gst_buffer_unref (paybuf); |
| continue; |
| } |
| } |
| |
| packet_len = gst_rtp_buffer_calc_packet_len (size, 0, 0); |
| |
| if (packet_len < mtu) { |
| GST_DEBUG_OBJECT (rtph265pay, |
| "NAL Unit fit in one packet datasize=%d mtu=%d", size, mtu); |
| /* will fit in one packet */ |
| |
| /* use buffer lists |
| * create buffer without payload containing only the RTP header |
| * (memory block at index 0) */ |
| outbuf = gst_rtp_buffer_new_allocate (0, 0, 0); |
| |
| gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp); |
| |
| /* only set the marker bit on packets containing access units */ |
| if (i == paybufs->len - 1 |
| && rtph265pay->alignment == GST_H265_ALIGNMENT_AU |
| && IS_ACCESS_UNIT (nalType)) { |
| gst_rtp_buffer_set_marker (&rtp, 1); |
| } |
| |
| /* timestamp the outbuffer */ |
| GST_BUFFER_PTS (outbuf) = pts; |
| GST_BUFFER_DTS (outbuf) = dts; |
| |
| /* insert payload memory block */ |
| gst_rtp_copy_video_meta (rtph265pay, outbuf, paybuf); |
| outbuf = gst_buffer_append (outbuf, paybuf); |
| |
| outlist = gst_buffer_list_new (); |
| |
| /* add the buffer to the buffer list */ |
| gst_buffer_list_add (outlist, outbuf); |
| |
| gst_rtp_buffer_unmap (&rtp); |
| |
| /* push the list to the next element in the pipe */ |
| ret = gst_rtp_base_payload_push_list (basepayload, outlist); |
| } else { |
| /* fragmentation Units */ |
| guint limitedSize; |
| int ii = 0, start = 1, end = 0, pos = 0; |
| |
| GST_DEBUG_OBJECT (basepayload, |
| "NAL Unit DOES NOT fit in one packet datasize=%d mtu=%d", size, mtu); |
| |
| pos += 2; |
| size -= 2; |
| |
| GST_DEBUG_OBJECT (basepayload, "Using FU fragmentation for data size=%d", |
| size); |
| |
| /* We keep 3 bytes for PayloadHdr and FU Header */ |
| payload_len = gst_rtp_buffer_calc_payload_len (mtu - 3, 0, 0); |
| |
| outlist = gst_buffer_list_new (); |
| |
| while (end == 0) { |
| limitedSize = size < payload_len ? size : payload_len; |
| GST_DEBUG_OBJECT (basepayload, |
| "Inside FU fragmentation limitedSize=%d iteration=%d", limitedSize, |
| ii); |
| |
| /* use buffer lists |
| * create buffer without payload containing only the RTP header |
| * (memory block at index 0), and with space for PayloadHdr and FU header */ |
| outbuf = gst_rtp_buffer_new_allocate (3, 0, 0); |
| |
| gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp); |
| |
| GST_BUFFER_DTS (outbuf) = dts; |
| GST_BUFFER_PTS (outbuf) = pts; |
| payload = gst_rtp_buffer_get_payload (&rtp); |
| |
| if (limitedSize == size) { |
| GST_DEBUG_OBJECT (basepayload, "end size=%d iteration=%d", size, ii); |
| end = 1; |
| } |
| |
| /* PayloadHdr (type = 49) */ |
| payload[0] = (nalHeader[0] & 0x81) | (49 << 1); |
| payload[1] = nalHeader[1]; |
| |
| /* set the marker bit on the last packet of an access unit */ |
| if (IS_ACCESS_UNIT (nalType)) { |
| gst_rtp_buffer_set_marker (&rtp, |
| end && i == paybufs->len - 1 |
| && rtph265pay->alignment == GST_H265_ALIGNMENT_AU); |
| } |
| |
| /* FU Header */ |
| payload[2] = (start << 7) | (end << 6) | (nalType & 0x3f); |
| |
| gst_rtp_buffer_unmap (&rtp); |
| |
| /* insert payload memory block */ |
| gst_rtp_copy_video_meta (rtph265pay, outbuf, paybuf); |
| gst_buffer_copy_into (outbuf, paybuf, GST_BUFFER_COPY_MEMORY, pos, |
| limitedSize); |
| /* add the buffer to the buffer list */ |
| gst_buffer_list_add (outlist, outbuf); |
| |
| size -= limitedSize; |
| pos += limitedSize; |
| ii++; |
| start = 0; |
| } |
| |
| ret = gst_rtp_base_payload_push_list (basepayload, outlist); |
| gst_buffer_unref (paybuf); |
| } |
| } |
| |
| g_ptr_array_free (paybufs, TRUE); |
| |
| return ret; |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h265_pay_handle_buffer (GstRTPBasePayload * basepayload, |
| GstBuffer * buffer) |
| { |
| GstRtpH265Pay *rtph265pay; |
| GstFlowReturn ret; |
| gsize size; |
| guint nal_len, i; |
| GstMapInfo map; |
| const guint8 *data; |
| GstClockTime dts, pts; |
| GArray *nal_queue; |
| gboolean hevc; |
| GstBuffer *paybuf = NULL; |
| gsize skip; |
| |
| rtph265pay = GST_RTP_H265_PAY (basepayload); |
| |
| /* the input buffer contains one or more NAL units */ |
| |
| hevc = (rtph265pay->stream_format == GST_H265_STREAM_FORMAT_HEV1) |
| || (rtph265pay->stream_format == GST_H265_STREAM_FORMAT_HVC1); |
| |
| if (hevc) { |
| /* In hevc mode, there is no adapter, so nothing to flush */ |
| if (buffer == NULL) |
| return GST_FLOW_OK; |
| gst_buffer_map (buffer, &map, GST_MAP_READ); |
| data = map.data; |
| size = map.size; |
| pts = GST_BUFFER_PTS (buffer); |
| dts = GST_BUFFER_DTS (buffer); |
| GST_DEBUG_OBJECT (basepayload, "got %" G_GSIZE_FORMAT " bytes", size); |
| } else { |
| dts = gst_adapter_prev_dts (rtph265pay->adapter, NULL); |
| pts = gst_adapter_prev_pts (rtph265pay->adapter, NULL); |
| if (buffer) { |
| if (!GST_CLOCK_TIME_IS_VALID (dts)) |
| dts = GST_BUFFER_DTS (buffer); |
| if (!GST_CLOCK_TIME_IS_VALID (pts)) |
| pts = GST_BUFFER_PTS (buffer); |
| |
| gst_adapter_push (rtph265pay->adapter, buffer); |
| } |
| size = gst_adapter_available (rtph265pay->adapter); |
| /* Nothing to do here if the adapter is empty, e.g. on EOS */ |
| if (size == 0) |
| return GST_FLOW_OK; |
| data = gst_adapter_map (rtph265pay->adapter, size); |
| GST_DEBUG_OBJECT (basepayload, |
| "got %" G_GSIZE_FORMAT " bytes (%" G_GSIZE_FORMAT ")", size, |
| buffer ? gst_buffer_get_size (buffer) : 0); |
| } |
| |
| ret = GST_FLOW_OK; |
| |
| /* now loop over all NAL units and put them in a packet |
| * FIXME, we should really try to pack multiple NAL units into one RTP packet |
| * if we can, especially for the config packets that wont't cause decoder |
| * latency. */ |
| if (hevc) { |
| guint nal_length_size; |
| gsize offset = 0; |
| GPtrArray *paybufs; |
| |
| paybufs = g_ptr_array_new (); |
| nal_length_size = rtph265pay->nal_length_size; |
| |
| while (size > nal_length_size) { |
| gint i; |
| |
| nal_len = 0; |
| for (i = 0; i < nal_length_size; i++) { |
| nal_len = ((nal_len << 8) + data[i]); |
| } |
| |
| /* skip the length bytes, make sure we don't run past the buffer size */ |
| data += nal_length_size; |
| offset += nal_length_size; |
| size -= nal_length_size; |
| |
| if (size >= nal_len) { |
| GST_DEBUG_OBJECT (basepayload, "got NAL of size %u", nal_len); |
| } else { |
| nal_len = size; |
| GST_DEBUG_OBJECT (basepayload, "got incomplete NAL of size %u", |
| nal_len); |
| } |
| |
| paybuf = gst_buffer_copy_region (buffer, GST_BUFFER_COPY_ALL, offset, |
| nal_len); |
| g_ptr_array_add (paybufs, paybuf); |
| |
| data += nal_len; |
| offset += nal_len; |
| size -= nal_len; |
| } |
| ret = gst_rtp_h265_pay_payload_nal (basepayload, paybufs, dts, pts); |
| } else { |
| guint next; |
| gboolean update = FALSE; |
| GPtrArray *paybufs; |
| |
| /* get offset of first start code */ |
| next = next_start_code (data, size); |
| |
| /* skip to start code, if no start code is found, next will be size and we |
| * will not collect data. */ |
| data += next; |
| size -= next; |
| nal_queue = rtph265pay->queue; |
| skip = next; |
| |
| /* array must be empty when we get here */ |
| g_assert (nal_queue->len == 0); |
| |
| GST_DEBUG_OBJECT (basepayload, |
| "found first start at %u, bytes left %" G_GSIZE_FORMAT, next, size); |
| |
| paybufs = g_ptr_array_new (); |
| |
| /* first pass to locate NALs and parse VPS/SPS/PPS */ |
| while (size > 4) { |
| /* skip start code */ |
| data += 3; |
| size -= 3; |
| |
| /* use next_start_code() to scan buffer. |
| * next_start_code() returns the offset in data, |
| * starting from zero to the first byte of 0.0.0.1 |
| * If no start code is found, it returns the value of the |
| * 'size' parameter. |
| * data is unchanged by the call to next_start_code() |
| */ |
| next = next_start_code (data, size); |
| |
| if (next == size && buffer != NULL) { |
| /* Didn't find the start of next NAL and it's not EOS, |
| * handle it next time */ |
| break; |
| } |
| |
| /* nal length is distance to next start code */ |
| nal_len = next; |
| |
| GST_DEBUG_OBJECT (basepayload, "found next start at %u of size %u", next, |
| nal_len); |
| |
| /* We know our stream is a valid H265 NAL packet, |
| * go parse it for VPS/SPS/PPS to enrich the caps */ |
| /* order: make sure to check nal */ |
| update = gst_rtp_h265_pay_decode_nal (rtph265pay, data, nal_len, dts, pts) |
| || update; |
| |
| /* move to next NAL packet */ |
| data += nal_len; |
| size -= nal_len; |
| |
| g_array_append_val (nal_queue, nal_len); |
| } |
| |
| /* if has new VPS, SPS & PPS, update the output caps */ |
| if (G_UNLIKELY (update)) |
| if (!gst_rtp_h265_pay_set_vps_sps_pps (basepayload)) |
| goto caps_rejected; |
| |
| /* second pass to payload and push */ |
| |
| if (nal_queue->len != 0) |
| gst_adapter_flush (rtph265pay->adapter, skip); |
| |
| for (i = 0; i < nal_queue->len; i++) { |
| guint size; |
| |
| nal_len = g_array_index (nal_queue, guint, i); |
| /* skip start code */ |
| gst_adapter_flush (rtph265pay->adapter, 3); |
| |
| /* Trim the end unless we're the last NAL in the stream. |
| * In case we're not at the end of the buffer we know the next block |
| * starts with 0x000001 so all the 0x00 bytes at the end of this one are |
| * trailing 0x0 that can be discarded */ |
| size = nal_len; |
| data = gst_adapter_map (rtph265pay->adapter, size); |
| if (i + 1 != nal_queue->len || buffer != NULL) |
| for (; size > 1 && data[size - 1] == 0x0; size--) |
| /* skip */ ; |
| |
| /* FIXME: We need to wait until the next packet or EOS to |
| * actually payload the NAL so we can know if the current NAL is |
| * the last one of an access unit or not if we are in bytestream mode |
| */ |
| |
| paybuf = gst_adapter_take_buffer (rtph265pay->adapter, size); |
| g_assert (paybuf); |
| g_ptr_array_add (paybufs, paybuf); |
| |
| /* move to next NAL packet */ |
| /* Skips the trailing zeros */ |
| gst_adapter_flush (rtph265pay->adapter, nal_len - size); |
| } |
| /* put the data in one or more RTP packets */ |
| ret = gst_rtp_h265_pay_payload_nal (basepayload, paybufs, dts, pts); |
| g_array_set_size (nal_queue, 0); |
| } |
| |
| done: |
| if (hevc) { |
| gst_buffer_unmap (buffer, &map); |
| gst_buffer_unref (buffer); |
| } else { |
| gst_adapter_unmap (rtph265pay->adapter); |
| } |
| |
| return ret; |
| |
| caps_rejected: |
| { |
| GST_WARNING_OBJECT (basepayload, "Could not set outcaps"); |
| g_array_set_size (nal_queue, 0); |
| ret = GST_FLOW_NOT_NEGOTIATED; |
| goto done; |
| } |
| } |
| |
| static gboolean |
| gst_rtp_h265_pay_sink_event (GstRTPBasePayload * payload, GstEvent * event) |
| { |
| gboolean res; |
| const GstStructure *s; |
| GstRtpH265Pay *rtph265pay = GST_RTP_H265_PAY (payload); |
| |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_FLUSH_STOP: |
| gst_adapter_clear (rtph265pay->adapter); |
| break; |
| case GST_EVENT_CUSTOM_DOWNSTREAM: |
| s = gst_event_get_structure (event); |
| if (gst_structure_has_name (s, "GstForceKeyUnit")) { |
| gboolean resend_codec_data; |
| |
| if (gst_structure_get_boolean (s, "all-headers", |
| &resend_codec_data) && resend_codec_data) |
| rtph265pay->send_vps_sps_pps = TRUE; |
| } |
| break; |
| case GST_EVENT_EOS: |
| { |
| /* call handle_buffer with NULL to flush last NAL from adapter |
| * in byte-stream mode |
| */ |
| gst_rtp_h265_pay_handle_buffer (payload, NULL); |
| break; |
| } |
| case GST_EVENT_STREAM_START: |
| GST_DEBUG_OBJECT (rtph265pay, |
| "New stream detected => Clear VPS, SPS and PPS"); |
| gst_rtp_h265_pay_clear_vps_sps_pps (rtph265pay); |
| break; |
| default: |
| break; |
| } |
| |
| res = GST_RTP_BASE_PAYLOAD_CLASS (parent_class)->sink_event (payload, event); |
| |
| return res; |
| } |
| |
| static GstStateChangeReturn |
| gst_rtp_h265_pay_change_state (GstElement * element, GstStateChange transition) |
| { |
| GstStateChangeReturn ret; |
| GstRtpH265Pay *rtph265pay = GST_RTP_H265_PAY (element); |
| |
| switch (transition) { |
| case GST_STATE_CHANGE_READY_TO_PAUSED: |
| rtph265pay->send_vps_sps_pps = FALSE; |
| gst_adapter_clear (rtph265pay->adapter); |
| break; |
| default: |
| break; |
| } |
| |
| ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); |
| |
| switch (transition) { |
| case GST_STATE_CHANGE_PAUSED_TO_READY: |
| rtph265pay->last_vps_sps_pps = -1; |
| gst_rtp_h265_pay_clear_vps_sps_pps (rtph265pay); |
| break; |
| default: |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static void |
| gst_rtp_h265_pay_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstRtpH265Pay *rtph265pay; |
| |
| rtph265pay = GST_RTP_H265_PAY (object); |
| |
| switch (prop_id) { |
| case PROP_CONFIG_INTERVAL: |
| rtph265pay->vps_sps_pps_interval = g_value_get_int (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_rtp_h265_pay_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstRtpH265Pay *rtph265pay; |
| |
| rtph265pay = GST_RTP_H265_PAY (object); |
| |
| switch (prop_id) { |
| case PROP_CONFIG_INTERVAL: |
| g_value_set_int (value, rtph265pay->vps_sps_pps_interval); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| gboolean |
| gst_rtp_h265_pay_plugin_init (GstPlugin * plugin) |
| { |
| return gst_element_register (plugin, "rtph265pay", |
| GST_RANK_SECONDARY, GST_TYPE_RTP_H265_PAY); |
| } |