| /* GStreamer |
| * Copyright (C) <2005> Wim Taymans <wim.taymans@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 <stdio.h> |
| |
| #include <gst/rtp/gstrtpbuffer.h> |
| #include <gst/video/video.h> |
| |
| #include "gstrtph263ppay.h" |
| #include "gstrtputils.h" |
| |
| #define DEFAULT_FRAGMENTATION_MODE GST_FRAGMENTATION_MODE_NORMAL |
| |
| enum |
| { |
| PROP_0, |
| PROP_FRAGMENTATION_MODE |
| }; |
| |
| #define GST_TYPE_FRAGMENTATION_MODE (gst_fragmentation_mode_get_type()) |
| static GType |
| gst_fragmentation_mode_get_type (void) |
| { |
| static GType fragmentation_mode_type = 0; |
| static const GEnumValue fragmentation_mode[] = { |
| {GST_FRAGMENTATION_MODE_NORMAL, "Normal", "normal"}, |
| {GST_FRAGMENTATION_MODE_SYNC, "Fragment at sync points", "sync"}, |
| {0, NULL, NULL}, |
| }; |
| |
| if (!fragmentation_mode_type) { |
| fragmentation_mode_type = |
| g_enum_register_static ("GstFragmentationMode", fragmentation_mode); |
| } |
| return fragmentation_mode_type; |
| } |
| |
| |
| GST_DEBUG_CATEGORY_STATIC (rtph263ppay_debug); |
| #define GST_CAT_DEFAULT rtph263ppay_debug |
| |
| static GstStaticPadTemplate gst_rtp_h263p_pay_sink_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("video/x-h263, variant = (string) itu") |
| ); |
| |
| /* |
| * We also return these in getcaps() as required by the SDP caps |
| * |
| * width = (int) [16, 4096] |
| * height = (int) [16, 4096] |
| * "annex-f = (boolean) {true, false}," |
| * "annex-i = (boolean) {true, false}," |
| * "annex-j = (boolean) {true, false}," |
| * "annex-l = (boolean) {true, false}," |
| * "annex-t = (boolean) {true, false}," |
| * "annex-v = (boolean) {true, false}") |
| */ |
| |
| |
| static GstStaticPadTemplate gst_rtp_h263p_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) \"H263-1998\"; " |
| "application/x-rtp, " |
| "media = (string) \"video\", " |
| "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", " |
| "clock-rate = (int) 90000, " "encoding-name = (string) \"H263-2000\"") |
| ); |
| |
| static void gst_rtp_h263p_pay_finalize (GObject * object); |
| |
| static void gst_rtp_h263p_pay_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_rtp_h263p_pay_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| |
| static gboolean gst_rtp_h263p_pay_setcaps (GstRTPBasePayload * payload, |
| GstCaps * caps); |
| static GstCaps *gst_rtp_h263p_pay_sink_getcaps (GstRTPBasePayload * payload, |
| GstPad * pad, GstCaps * filter); |
| static GstFlowReturn gst_rtp_h263p_pay_handle_buffer (GstRTPBasePayload * |
| payload, GstBuffer * buffer); |
| |
| #define gst_rtp_h263p_pay_parent_class parent_class |
| G_DEFINE_TYPE (GstRtpH263PPay, gst_rtp_h263p_pay, GST_TYPE_RTP_BASE_PAYLOAD); |
| |
| static void |
| gst_rtp_h263p_pay_class_init (GstRtpH263PPayClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstElementClass *gstelement_class; |
| GstRTPBasePayloadClass *gstrtpbasepayload_class; |
| |
| gobject_class = (GObjectClass *) klass; |
| gstelement_class = (GstElementClass *) klass; |
| gstrtpbasepayload_class = (GstRTPBasePayloadClass *) klass; |
| |
| gobject_class->finalize = gst_rtp_h263p_pay_finalize; |
| gobject_class->set_property = gst_rtp_h263p_pay_set_property; |
| gobject_class->get_property = gst_rtp_h263p_pay_get_property; |
| |
| gstrtpbasepayload_class->set_caps = gst_rtp_h263p_pay_setcaps; |
| gstrtpbasepayload_class->get_caps = gst_rtp_h263p_pay_sink_getcaps; |
| gstrtpbasepayload_class->handle_buffer = gst_rtp_h263p_pay_handle_buffer; |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), |
| PROP_FRAGMENTATION_MODE, g_param_spec_enum ("fragmentation-mode", |
| "Fragmentation Mode", |
| "Packet Fragmentation Mode", GST_TYPE_FRAGMENTATION_MODE, |
| DEFAULT_FRAGMENTATION_MODE, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_h263p_pay_src_template); |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_h263p_pay_sink_template); |
| |
| gst_element_class_set_static_metadata (gstelement_class, "RTP H263 payloader", |
| "Codec/Payloader/Network/RTP", |
| "Payload-encodes H263/+/++ video in RTP packets (RFC 4629)", |
| "Wim Taymans <wim.taymans@gmail.com>"); |
| |
| GST_DEBUG_CATEGORY_INIT (rtph263ppay_debug, "rtph263ppay", |
| 0, "rtph263ppay (RFC 4629)"); |
| } |
| |
| static void |
| gst_rtp_h263p_pay_init (GstRtpH263PPay * rtph263ppay) |
| { |
| rtph263ppay->adapter = gst_adapter_new (); |
| |
| rtph263ppay->fragmentation_mode = DEFAULT_FRAGMENTATION_MODE; |
| } |
| |
| static void |
| gst_rtp_h263p_pay_finalize (GObject * object) |
| { |
| GstRtpH263PPay *rtph263ppay; |
| |
| rtph263ppay = GST_RTP_H263P_PAY (object); |
| |
| g_object_unref (rtph263ppay->adapter); |
| rtph263ppay->adapter = NULL; |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| static gboolean |
| gst_rtp_h263p_pay_setcaps (GstRTPBasePayload * payload, GstCaps * caps) |
| { |
| gboolean res; |
| GstCaps *peercaps; |
| gchar *encoding_name = NULL; |
| |
| g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE); |
| |
| peercaps = |
| gst_pad_peer_query_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload), NULL); |
| if (peercaps) { |
| GstCaps *tcaps = |
| gst_pad_get_pad_template_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload)); |
| GstCaps *intersect = gst_caps_intersect (peercaps, tcaps); |
| gst_caps_unref (tcaps); |
| |
| gst_caps_unref (peercaps); |
| if (!gst_caps_is_empty (intersect)) { |
| GstStructure *s = gst_caps_get_structure (intersect, 0); |
| encoding_name = g_strdup (gst_structure_get_string (s, "encoding-name")); |
| } |
| gst_caps_unref (intersect); |
| } |
| |
| if (!encoding_name) |
| encoding_name = g_strdup ("H263-1998"); |
| |
| gst_rtp_base_payload_set_options (payload, "video", TRUE, |
| (gchar *) encoding_name, 90000); |
| res = gst_rtp_base_payload_set_outcaps (payload, NULL); |
| g_free (encoding_name); |
| |
| return res; |
| } |
| |
| static GstCaps * |
| caps_append (GstCaps * caps, GstStructure * in_s, guint x, guint y, guint mpi) |
| { |
| GstStructure *s; |
| |
| if (!in_s) |
| return caps; |
| |
| if (mpi < 1 || mpi > 32) |
| return caps; |
| |
| s = gst_structure_copy (in_s); |
| |
| gst_structure_set (s, |
| "width", GST_TYPE_INT_RANGE, 1, x, |
| "height", GST_TYPE_INT_RANGE, 1, y, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 1001 * mpi, NULL); |
| |
| caps = gst_caps_merge_structure (caps, s); |
| |
| return caps; |
| } |
| |
| |
| static GstCaps * |
| gst_rtp_h263p_pay_sink_getcaps (GstRTPBasePayload * payload, GstPad * pad, |
| GstCaps * filter) |
| { |
| GstRtpH263PPay *rtph263ppay; |
| GstCaps *caps = NULL, *templ; |
| GstCaps *peercaps = NULL; |
| GstCaps *intersect = NULL; |
| guint i; |
| |
| rtph263ppay = GST_RTP_H263P_PAY (payload); |
| |
| peercaps = |
| gst_pad_peer_query_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload), NULL); |
| |
| /* if we're just outputting to udpsink or fakesink or so, we should also |
| * accept any input compatible with our sink template caps */ |
| if (!peercaps || gst_caps_is_any (peercaps)) { |
| if (peercaps) |
| gst_caps_unref (peercaps); |
| caps = |
| gst_pad_get_pad_template_caps (GST_RTP_BASE_PAYLOAD_SINKPAD (payload)); |
| goto done; |
| } |
| |
| /* We basically need to differentiate two use-cases here: One where there's |
| * a capsfilter after the payloader with caps created from an SDP; in this |
| * case the filter caps are fixed and we want to signal to an encoder what |
| * we want it to produce. The second case is simply payloader ! depayloader |
| * where we are dealing with the depayloader's template caps. In this case |
| * we should accept any input compatible with our sink template caps. */ |
| if (!gst_caps_is_fixed (peercaps)) { |
| gst_caps_unref (peercaps); |
| caps = |
| gst_pad_get_pad_template_caps (GST_RTP_BASE_PAYLOAD_SINKPAD (payload)); |
| goto done; |
| } |
| |
| templ = gst_pad_get_pad_template_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload)); |
| intersect = gst_caps_intersect (peercaps, templ); |
| gst_caps_unref (peercaps); |
| gst_caps_unref (templ); |
| |
| if (gst_caps_is_empty (intersect)) |
| return intersect; |
| |
| caps = gst_caps_new_empty (); |
| for (i = 0; i < gst_caps_get_size (intersect); i++) { |
| GstStructure *s = gst_caps_get_structure (intersect, i); |
| const gchar *encoding_name = gst_structure_get_string (s, "encoding-name"); |
| |
| if (!strcmp (encoding_name, "H263-2000")) { |
| const gchar *profile_str = gst_structure_get_string (s, "profile"); |
| const gchar *level_str = gst_structure_get_string (s, "level"); |
| int profile = 0; |
| int level = 0; |
| |
| if (profile_str && level_str) { |
| gboolean i = FALSE, j = FALSE, l = FALSE, t = FALSE, f = FALSE, |
| v = FALSE; |
| GstStructure *new_s = gst_structure_new ("video/x-h263", |
| "variant", G_TYPE_STRING, "itu", |
| NULL); |
| |
| profile = atoi (profile_str); |
| level = atoi (level_str); |
| |
| /* These profiles are defined in the H.263 Annex X */ |
| switch (profile) { |
| case 0: |
| /* The Baseline Profile (Profile 0) */ |
| break; |
| case 1: |
| /* H.320 Coding Efficiency Version 2 Backward-Compatibility Profile |
| * (Profile 1) |
| * Baseline + Annexes I, J, L.4 and T |
| */ |
| i = j = l = t = TRUE; |
| break; |
| case 2: |
| /* Version 1 Backward-Compatibility Profile (Profile 2) |
| * Baseline + Annex F |
| */ |
| i = j = l = t = f = TRUE; |
| break; |
| case 3: |
| /* Version 2 Interactive and Streaming Wireless Profile |
| * Baseline + Annexes I, J, T |
| */ |
| i = j = t = TRUE; |
| break; |
| case 4: |
| /* Version 3 Interactive and Streaming Wireless Profile (Profile 4) |
| * Baseline + Annexes I, J, T, V, W.6.3.8, |
| */ |
| /* Missing W.6.3.8 */ |
| i = j = t = v = TRUE; |
| break; |
| case 5: |
| /* Conversational High Compression Profile (Profile 5) |
| * Baseline + Annexes F, I, J, L.4, T, D, U |
| */ |
| /* Missing D, U */ |
| f = i = j = l = t = TRUE; |
| break; |
| case 6: |
| /* Conversational Internet Profile (Profile 6) |
| * Baseline + Annexes F, I, J, L.4, T, D, U and |
| * K with arbitratry slice ordering |
| */ |
| /* Missing D, U, K with arbitratry slice ordering */ |
| f = i = j = l = t = TRUE; |
| break; |
| case 7: |
| /* Conversational Interlace Profile (Profile 7) |
| * Baseline + Annexes F, I, J, L.4, T, D, U, W.6.3.11 |
| */ |
| /* Missing D, U, W.6.3.11 */ |
| f = i = j = l = t = TRUE; |
| break; |
| case 8: |
| /* High Latency Profile (Profile 8) |
| * Baseline + Annexes F, I, J, L.4, T, D, U, P.5, O.1.1 and |
| * K with arbitratry slice ordering |
| */ |
| /* Missing D, U, P.5, O.1.1 */ |
| f = i = j = l = t = TRUE; |
| break; |
| } |
| |
| |
| if (f || i || j || t || l || v) { |
| GValue list = { 0 }; |
| GValue vstr = { 0 }; |
| |
| g_value_init (&list, GST_TYPE_LIST); |
| g_value_init (&vstr, G_TYPE_STRING); |
| |
| g_value_set_static_string (&vstr, "h263"); |
| gst_value_list_append_value (&list, &vstr); |
| g_value_set_static_string (&vstr, "h263p"); |
| gst_value_list_append_value (&list, &vstr); |
| |
| if (l || v) { |
| g_value_set_static_string (&vstr, "h263pp"); |
| gst_value_list_append_value (&list, &vstr); |
| } |
| g_value_unset (&vstr); |
| |
| gst_structure_set_value (new_s, "h263version", &list); |
| g_value_unset (&list); |
| } else { |
| gst_structure_set (new_s, "h263version", G_TYPE_STRING, "h263", NULL); |
| } |
| |
| |
| if (!f) |
| gst_structure_set (new_s, "annex-f", G_TYPE_BOOLEAN, FALSE, NULL); |
| if (!i) |
| gst_structure_set (new_s, "annex-i", G_TYPE_BOOLEAN, FALSE, NULL); |
| if (!j) |
| gst_structure_set (new_s, "annex-j", G_TYPE_BOOLEAN, FALSE, NULL); |
| if (!t) |
| gst_structure_set (new_s, "annex-t", G_TYPE_BOOLEAN, FALSE, NULL); |
| if (!l) |
| gst_structure_set (new_s, "annex-l", G_TYPE_BOOLEAN, FALSE, NULL); |
| if (!v) |
| gst_structure_set (new_s, "annex-v", G_TYPE_BOOLEAN, FALSE, NULL); |
| |
| |
| if (level <= 10 || level == 45) { |
| gst_structure_set (new_s, |
| "width", GST_TYPE_INT_RANGE, 1, 176, |
| "height", GST_TYPE_INT_RANGE, 1, 144, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 2002, NULL); |
| caps = gst_caps_merge_structure (caps, new_s); |
| } else if (level <= 20) { |
| GstStructure *s_copy = gst_structure_copy (new_s); |
| |
| gst_structure_set (new_s, |
| "width", GST_TYPE_INT_RANGE, 1, 352, |
| "height", GST_TYPE_INT_RANGE, 1, 288, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 2002, NULL); |
| caps = gst_caps_merge_structure (caps, new_s); |
| |
| gst_structure_set (s_copy, |
| "width", GST_TYPE_INT_RANGE, 1, 176, |
| "height", GST_TYPE_INT_RANGE, 1, 144, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 1001, NULL); |
| caps = gst_caps_merge_structure (caps, s_copy); |
| } else if (level <= 40) { |
| |
| gst_structure_set (new_s, |
| "width", GST_TYPE_INT_RANGE, 1, 352, |
| "height", GST_TYPE_INT_RANGE, 1, 288, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 1001, NULL); |
| caps = gst_caps_merge_structure (caps, new_s); |
| } else if (level <= 50) { |
| GstStructure *s_copy = gst_structure_copy (new_s); |
| |
| gst_structure_set (new_s, |
| "width", GST_TYPE_INT_RANGE, 1, 352, |
| "height", GST_TYPE_INT_RANGE, 1, 288, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 50, 1, NULL); |
| caps = gst_caps_merge_structure (caps, new_s); |
| |
| gst_structure_set (s_copy, |
| "width", GST_TYPE_INT_RANGE, 1, 352, |
| "height", GST_TYPE_INT_RANGE, 1, 240, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 60000, 1001, NULL); |
| caps = gst_caps_merge_structure (caps, s_copy); |
| } else if (level <= 60) { |
| GstStructure *s_copy = gst_structure_copy (new_s); |
| |
| gst_structure_set (new_s, |
| "width", GST_TYPE_INT_RANGE, 1, 720, |
| "height", GST_TYPE_INT_RANGE, 1, 288, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 50, 1, NULL); |
| caps = gst_caps_merge_structure (caps, new_s); |
| |
| gst_structure_set (s_copy, |
| "width", GST_TYPE_INT_RANGE, 1, 720, |
| "height", GST_TYPE_INT_RANGE, 1, 240, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 60000, 1001, NULL); |
| caps = gst_caps_merge_structure (caps, s_copy); |
| } else if (level <= 70) { |
| GstStructure *s_copy = gst_structure_copy (new_s); |
| |
| gst_structure_set (new_s, |
| "width", GST_TYPE_INT_RANGE, 1, 720, |
| "height", GST_TYPE_INT_RANGE, 1, 576, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 50, 1, NULL); |
| caps = gst_caps_merge_structure (caps, new_s); |
| |
| gst_structure_set (s_copy, |
| "width", GST_TYPE_INT_RANGE, 1, 720, |
| "height", GST_TYPE_INT_RANGE, 1, 480, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 60000, 1001, NULL); |
| caps = gst_caps_merge_structure (caps, s_copy); |
| } else { |
| caps = gst_caps_merge_structure (caps, new_s); |
| } |
| |
| } else { |
| GstStructure *new_s = gst_structure_new ("video/x-h263", |
| "variant", G_TYPE_STRING, "itu", |
| "h263version", G_TYPE_STRING, "h263", |
| NULL); |
| |
| GST_DEBUG_OBJECT (rtph263ppay, "No profile or level specified" |
| " for H263-2000, defaulting to baseline H263"); |
| |
| caps = gst_caps_merge_structure (caps, new_s); |
| } |
| } else { |
| gboolean f = FALSE, i = FALSE, j = FALSE, t = FALSE; |
| /* FIXME: ffmpeg support the Appendix K too, how do we express it ? |
| * guint k; |
| */ |
| const gchar *str; |
| GstStructure *new_s = gst_structure_new ("video/x-h263", |
| "variant", G_TYPE_STRING, "itu", |
| NULL); |
| gboolean added = FALSE; |
| |
| str = gst_structure_get_string (s, "f"); |
| if (str && !strcmp (str, "1")) |
| f = TRUE; |
| |
| str = gst_structure_get_string (s, "i"); |
| if (str && !strcmp (str, "1")) |
| i = TRUE; |
| |
| str = gst_structure_get_string (s, "j"); |
| if (str && !strcmp (str, "1")) |
| j = TRUE; |
| |
| str = gst_structure_get_string (s, "t"); |
| if (str && !strcmp (str, "1")) |
| t = TRUE; |
| |
| if (f || i || j || t) { |
| GValue list = { 0 }; |
| GValue vstr = { 0 }; |
| |
| g_value_init (&list, GST_TYPE_LIST); |
| g_value_init (&vstr, G_TYPE_STRING); |
| |
| g_value_set_static_string (&vstr, "h263"); |
| gst_value_list_append_value (&list, &vstr); |
| g_value_set_static_string (&vstr, "h263p"); |
| gst_value_list_append_value (&list, &vstr); |
| g_value_unset (&vstr); |
| |
| gst_structure_set_value (new_s, "h263version", &list); |
| g_value_unset (&list); |
| } else { |
| gst_structure_set (new_s, "h263version", G_TYPE_STRING, "h263", NULL); |
| } |
| |
| if (!f) |
| gst_structure_set (new_s, "annex-f", G_TYPE_BOOLEAN, FALSE, NULL); |
| if (!i) |
| gst_structure_set (new_s, "annex-i", G_TYPE_BOOLEAN, FALSE, NULL); |
| if (!j) |
| gst_structure_set (new_s, "annex-j", G_TYPE_BOOLEAN, FALSE, NULL); |
| if (!t) |
| gst_structure_set (new_s, "annex-t", G_TYPE_BOOLEAN, FALSE, NULL); |
| |
| |
| str = gst_structure_get_string (s, "custom"); |
| if (str) { |
| unsigned int xmax, ymax, mpi; |
| if (sscanf (str, "%u,%u,%u", &xmax, &ymax, &mpi) == 3) { |
| if (xmax % 4 && ymax % 4 && mpi >= 1 && mpi <= 32) { |
| caps = caps_append (caps, new_s, xmax, ymax, mpi); |
| added = TRUE; |
| } else { |
| GST_WARNING_OBJECT (rtph263ppay, "Invalid custom framesize/MPI" |
| " %u x %u at %u, ignoring", xmax, ymax, mpi); |
| } |
| } else { |
| GST_WARNING_OBJECT (rtph263ppay, "Invalid custom framesize/MPI: %s," |
| " ignoring", str); |
| } |
| } |
| |
| str = gst_structure_get_string (s, "16cif"); |
| if (str) { |
| int mpi = atoi (str); |
| caps = caps_append (caps, new_s, 1408, 1152, mpi); |
| added = TRUE; |
| } |
| |
| str = gst_structure_get_string (s, "4cif"); |
| if (str) { |
| int mpi = atoi (str); |
| caps = caps_append (caps, new_s, 704, 576, mpi); |
| added = TRUE; |
| } |
| |
| str = gst_structure_get_string (s, "cif"); |
| if (str) { |
| int mpi = atoi (str); |
| caps = caps_append (caps, new_s, 352, 288, mpi); |
| added = TRUE; |
| } |
| |
| str = gst_structure_get_string (s, "qcif"); |
| if (str) { |
| int mpi = atoi (str); |
| caps = caps_append (caps, new_s, 176, 144, mpi); |
| added = TRUE; |
| } |
| |
| str = gst_structure_get_string (s, "sqcif"); |
| if (str) { |
| int mpi = atoi (str); |
| caps = caps_append (caps, new_s, 128, 96, mpi); |
| added = TRUE; |
| } |
| |
| if (added) |
| gst_structure_free (new_s); |
| else |
| caps = gst_caps_merge_structure (caps, new_s); |
| } |
| } |
| |
| gst_caps_unref (intersect); |
| |
| 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; |
| } |
| |
| return caps; |
| } |
| |
| |
| static void |
| gst_rtp_h263p_pay_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstRtpH263PPay *rtph263ppay; |
| |
| rtph263ppay = GST_RTP_H263P_PAY (object); |
| |
| switch (prop_id) { |
| case PROP_FRAGMENTATION_MODE: |
| rtph263ppay->fragmentation_mode = g_value_get_enum (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_rtp_h263p_pay_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstRtpH263PPay *rtph263ppay; |
| |
| rtph263ppay = GST_RTP_H263P_PAY (object); |
| |
| switch (prop_id) { |
| case PROP_FRAGMENTATION_MODE: |
| g_value_set_enum (value, rtph263ppay->fragmentation_mode); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h263p_pay_flush (GstRtpH263PPay * rtph263ppay) |
| { |
| guint avail; |
| GstBufferList *list = NULL; |
| GstBuffer *outbuf = NULL; |
| GstFlowReturn ret; |
| gboolean fragmented = FALSE; |
| |
| avail = gst_adapter_available (rtph263ppay->adapter); |
| if (avail == 0) |
| return GST_FLOW_OK; |
| |
| fragmented = FALSE; |
| /* This algorithm assumes the H263/+/++ encoder sends complete frames in each |
| * buffer */ |
| /* With Fragmentation Mode at GST_FRAGMENTATION_MODE_NORMAL: |
| * This algorithm implements the Follow-on packets method for packetization. |
| * This assumes low packet loss network. |
| * With Fragmentation Mode at GST_FRAGMENTATION_MODE_SYNC: |
| * This algorithm separates large frames at synchronisation points (Segments) |
| * (See RFC 4629 section 6). It would be interesting to have a property such as network |
| * quality to select between both packetization methods */ |
| /* TODO Add VRC supprt (See RFC 4629 section 5.2) */ |
| |
| while (avail > 0) { |
| guint towrite; |
| guint8 *payload; |
| gint header_len; |
| guint next_gop = 0; |
| gboolean found_gob = FALSE; |
| GstRTPBuffer rtp = { NULL }; |
| GstBuffer *payload_buf; |
| |
| if (rtph263ppay->fragmentation_mode == GST_FRAGMENTATION_MODE_SYNC) { |
| /* start after 1st gop possible */ |
| |
| /* Check if we have a gob or eos , eossbs */ |
| /* FIXME EOS and EOSSBS packets should never contain any gobs and vice-versa */ |
| next_gop = |
| gst_adapter_masked_scan_uint32 (rtph263ppay->adapter, 0xffff8000, |
| 0x00008000, 0, avail); |
| if (next_gop == 0) { |
| GST_DEBUG_OBJECT (rtph263ppay, " Found GOB header"); |
| found_gob = TRUE; |
| } |
| |
| /* Find next and cut the packet accordingly */ |
| /* TODO we should get as many gobs as possible until MTU is reached, this |
| * code seems to just get one GOB per packet */ |
| if (next_gop == 0 && avail > 3) |
| next_gop = |
| gst_adapter_masked_scan_uint32 (rtph263ppay->adapter, 0xffff8000, |
| 0x00008000, 3, avail - 3); |
| GST_DEBUG_OBJECT (rtph263ppay, " Next GOB Detected at : %d", next_gop); |
| if (next_gop == -1) |
| next_gop = 0; |
| } |
| |
| /* for picture start frames (non-fragmented), we need to remove the first |
| * two 0x00 bytes and set P=1 */ |
| if (!fragmented || found_gob) { |
| gst_adapter_flush (rtph263ppay->adapter, 2); |
| avail -= 2; |
| } |
| header_len = 2; |
| |
| towrite = MIN (avail, gst_rtp_buffer_calc_payload_len |
| (GST_RTP_BASE_PAYLOAD_MTU (rtph263ppay) - header_len, 0, 0)); |
| |
| if (next_gop > 0) |
| towrite = MIN (next_gop, towrite); |
| |
| outbuf = gst_rtp_buffer_new_allocate (header_len, 0, 0); |
| |
| gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp); |
| /* last fragment gets the marker bit set */ |
| gst_rtp_buffer_set_marker (&rtp, avail > towrite ? 0 : 1); |
| |
| payload = gst_rtp_buffer_get_payload (&rtp); |
| |
| /* 0 1 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | RR |P|V| PLEN |PEBIT| |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| /* if fragmented or gop header , write p bit =1 */ |
| payload[0] = (fragmented && !found_gob) ? 0x00 : 0x04; |
| payload[1] = 0; |
| |
| GST_BUFFER_PTS (outbuf) = rtph263ppay->first_timestamp; |
| GST_BUFFER_DURATION (outbuf) = rtph263ppay->first_duration; |
| gst_rtp_buffer_unmap (&rtp); |
| |
| payload_buf = gst_adapter_take_buffer_fast (rtph263ppay->adapter, towrite); |
| gst_rtp_copy_video_meta (rtph263ppay, outbuf, payload_buf); |
| outbuf = gst_buffer_append (outbuf, payload_buf); |
| avail -= towrite; |
| |
| /* If more data is available and this is our first iteration, |
| * we create a buffer list and remember that we're fragmented. |
| * |
| * If we're fragmented already, add buffers to the previously |
| * created buffer list. |
| * |
| * Otherwise fragmented will be FALSE and we just push the single output |
| * buffer, and no list is allocated. |
| */ |
| if (avail && !fragmented) { |
| fragmented = TRUE; |
| list = gst_buffer_list_new (); |
| gst_buffer_list_add (list, outbuf); |
| } else if (fragmented) { |
| gst_buffer_list_add (list, outbuf); |
| } |
| } |
| |
| if (fragmented) { |
| ret = |
| gst_rtp_base_payload_push_list (GST_RTP_BASE_PAYLOAD (rtph263ppay), |
| list); |
| } else { |
| ret = |
| gst_rtp_base_payload_push (GST_RTP_BASE_PAYLOAD (rtph263ppay), outbuf); |
| } |
| |
| return ret; |
| } |
| |
| static GstFlowReturn |
| gst_rtp_h263p_pay_handle_buffer (GstRTPBasePayload * payload, |
| GstBuffer * buffer) |
| { |
| GstRtpH263PPay *rtph263ppay; |
| GstFlowReturn ret; |
| |
| rtph263ppay = GST_RTP_H263P_PAY (payload); |
| |
| rtph263ppay->first_timestamp = GST_BUFFER_PTS (buffer); |
| rtph263ppay->first_duration = GST_BUFFER_DURATION (buffer); |
| |
| /* we always encode and flush a full picture */ |
| gst_adapter_push (rtph263ppay->adapter, buffer); |
| ret = gst_rtp_h263p_pay_flush (rtph263ppay); |
| |
| return ret; |
| } |
| |
| gboolean |
| gst_rtp_h263p_pay_plugin_init (GstPlugin * plugin) |
| { |
| return gst_element_register (plugin, "rtph263ppay", |
| GST_RANK_SECONDARY, GST_TYPE_RTP_H263P_PAY); |
| } |
