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639 lines
19 KiB
C
639 lines
19 KiB
C
/* GStreamer
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* Copyright (C) <2008> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <string.h>
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#include <gst/rtp/gstrtpbuffer.h>
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#include "gstrtpvrawpay.h"
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GST_DEBUG_CATEGORY_STATIC (rtpvrawpay_debug);
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#define GST_CAT_DEFAULT (rtpvrawpay_debug)
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static GstStaticPadTemplate gst_rtp_vraw_pay_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-raw-rgb, "
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"bpp = (int) 24, "
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"depth = (int) 24, "
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"endianness = (int) BIG_ENDIAN, "
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"red_mask = (int) 0xFF000000, "
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"green_mask = (int) 0x00FF0000, "
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"blue_mask = (int) 0x0000FF00, "
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"width = (int) [ 1, 32767 ], "
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"height = (int) [ 1, 32767 ]; "
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"video/x-raw-rgb, "
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"bpp = (int) 32, "
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"depth = (int) 32, "
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"endianness = (int) BIG_ENDIAN, "
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"red_mask = (int) 0xFF000000, "
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"green_mask = (int) 0x00FF0000, "
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"blue_mask = (int) 0x0000FF00, "
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"alpha_mask = (int) 0x000000FF, "
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"width = (int) [ 1, 32767 ], "
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"height = (int) [ 1, 32767 ]; "
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"video/x-raw-rgb, "
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"bpp = (int) 24, "
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"depth = (int) 24, "
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"endianness = (int) BIG_ENDIAN, "
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"red_mask = (int) 0x0000FF00, "
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"green_mask = (int) 0x00FF0000, "
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"blue_mask = (int) 0xFF000000, "
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"width = (int) [ 1, 32767 ], "
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"height = (int) [ 1, 32767 ]; "
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"video/x-raw-rgb, "
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"bpp = (int) 32, "
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"depth = (int) 32, "
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"endianness = (int) BIG_ENDIAN, "
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"red_mask = (int) 0x0000FF00, "
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"green_mask = (int) 0x00FF0000, "
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"blue_mask = (int) 0xFF000000, "
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"alpha_mask = (int) 0x000000FF, "
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"width = (int) [ 1, 32767 ], "
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"height = (int) [ 1, 32767 ]; "
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"video/x-raw-yuv, "
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"format = (fourcc) { AYUV, UYVY, I420, Y41B, UYVP }, "
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"width = (int) [ 1, 32767 ], " "height = (int) [ 1, 32767 ]; ")
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);
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static GstStaticPadTemplate gst_rtp_vraw_pay_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/x-rtp, "
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"media = (string) \"video\", "
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"payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
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"clock-rate = (int) 90000, "
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"encoding-name = (string) \"RAW\","
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"sampling = (string) { \"RGB\", \"RGBA\", \"BGR\", \"BGRA\", "
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"\"YCbCr-4:4:4\", \"YCbCr-4:2:2\", \"YCbCr-4:2:0\", "
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"\"YCbCr-4:1:1\" },"
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/* we cannot express these as strings
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* "width = (string) [1 32767],"
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* "height = (string) [1 32767],"
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*/
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"depth = (string) { \"8\", \"10\", \"12\", \"16\" },"
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"colorimetry = (string) { \"BT601-5\", \"BT709-2\", \"SMPTE240M\" }"
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/* optional
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* interlace =
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* top-field-first =
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* chroma-position = (string)
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* gamma = (float)
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*/
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)
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);
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static gboolean gst_rtp_vraw_pay_setcaps (GstBaseRTPPayload * payload,
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GstCaps * caps);
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static GstFlowReturn gst_rtp_vraw_pay_handle_buffer (GstBaseRTPPayload *
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payload, GstBuffer * buffer);
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GST_BOILERPLATE (GstRtpVRawPay, gst_rtp_vraw_pay, GstBaseRTPPayload,
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GST_TYPE_BASE_RTP_PAYLOAD)
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static void gst_rtp_vraw_pay_base_init (gpointer klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_rtp_vraw_pay_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_rtp_vraw_pay_sink_template));
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gst_element_class_set_details_simple (element_class,
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"RTP Raw Video payloader", "Codec/Payloader/Network/RTP",
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"Payload raw video as RTP packets (RFC 4175)",
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"Wim Taymans <wim.taymans@gmail.com>");
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}
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static void
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gst_rtp_vraw_pay_class_init (GstRtpVRawPayClass * klass)
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{
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GstBaseRTPPayloadClass *gstbasertppayload_class;
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gstbasertppayload_class = (GstBaseRTPPayloadClass *) klass;
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gstbasertppayload_class->set_caps = gst_rtp_vraw_pay_setcaps;
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gstbasertppayload_class->handle_buffer = gst_rtp_vraw_pay_handle_buffer;
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GST_DEBUG_CATEGORY_INIT (rtpvrawpay_debug, "rtpvrawpay", 0,
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"Raw video RTP Payloader");
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}
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static void
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gst_rtp_vraw_pay_init (GstRtpVRawPay * rtpvrawpay, GstRtpVRawPayClass * klass)
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{
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}
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static gboolean
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gst_rtp_vraw_pay_setcaps (GstBaseRTPPayload * payload, GstCaps * caps)
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{
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GstRtpVRawPay *rtpvrawpay;
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GstStructure *s;
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gboolean res;
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const gchar *name;
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gint width, height;
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gint yp, up, vp;
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gint pgroup, ystride, uvstride = 0, xinc, yinc;
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GstVideoFormat sampling;
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const gchar *depthstr, *samplingstr, *colorimetrystr;
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gchar *wstr, *hstr;
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gboolean interlaced;
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const gchar *color_matrix;
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gint depth;
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rtpvrawpay = GST_RTP_VRAW_PAY (payload);
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s = gst_caps_get_structure (caps, 0);
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/* start parsing the format */
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name = gst_structure_get_name (s);
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/* these values are the only thing we can do */
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depthstr = "8";
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/* parse common width/height */
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res = gst_structure_get_int (s, "width", &width);
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res &= gst_structure_get_int (s, "height", &height);
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if (!res)
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goto missing_dimension;
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if (!gst_structure_get_boolean (s, "interlaced", &interlaced))
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interlaced = FALSE;
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color_matrix = gst_structure_get_string (s, "color-matrix");
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colorimetrystr = "SMPTE240M";
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if (color_matrix) {
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if (g_str_equal (color_matrix, "sdtv")) {
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/* BT.601 implies a bit more than just color-matrix */
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colorimetrystr = "BT601-5";
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} else if (g_str_equal (color_matrix, "hdtv")) {
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colorimetrystr = "BT709-2";
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}
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}
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yp = up = vp = 0;
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xinc = yinc = 1;
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if (!strcmp (name, "video/x-raw-rgb")) {
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gint amask, rmask;
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gboolean has_alpha;
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has_alpha = gst_structure_get_int (s, "alpha_mask", &amask);
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depth = 8;
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if (!gst_structure_get_int (s, "red_mask", &rmask))
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goto unknown_mask;
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if (has_alpha) {
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pgroup = 4;
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ystride = width * 4;
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if (rmask == 0xFF000000) {
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sampling = GST_VIDEO_FORMAT_RGBA;
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samplingstr = "RGBA";
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} else {
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sampling = GST_VIDEO_FORMAT_BGRA;
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samplingstr = "BGRA";
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}
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} else {
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pgroup = 3;
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ystride = GST_ROUND_UP_4 (width * 3);
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if (rmask == 0xFF000000) {
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sampling = GST_VIDEO_FORMAT_RGB;
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samplingstr = "RGB";
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} else {
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sampling = GST_VIDEO_FORMAT_BGR;
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samplingstr = "BGR";
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}
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}
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} else if (!strcmp (name, "video/x-raw-yuv")) {
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guint32 fourcc;
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if (!gst_structure_get_fourcc (s, "format", &fourcc))
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goto unknown_fourcc;
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GST_LOG_OBJECT (payload, "have fourcc %" GST_FOURCC_FORMAT,
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GST_FOURCC_ARGS (fourcc));
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switch (fourcc) {
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case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'):
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sampling = GST_VIDEO_FORMAT_AYUV;
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samplingstr = "YCbCr-4:4:4";
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pgroup = 3;
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ystride = width * 4;
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depth = 8;
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break;
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case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
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sampling = GST_VIDEO_FORMAT_UYVY;
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samplingstr = "YCbCr-4:2:2";
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pgroup = 4;
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xinc = 2;
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ystride = GST_ROUND_UP_2 (width) * 2;
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depth = 8;
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break;
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case GST_MAKE_FOURCC ('Y', '4', '1', 'B'):
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sampling = GST_VIDEO_FORMAT_Y41B;
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samplingstr = "YCbCr-4:1:1";
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pgroup = 6;
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xinc = 4;
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ystride = GST_ROUND_UP_4 (width);
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uvstride = GST_ROUND_UP_8 (width) / 4;
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up = ystride * height;
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vp = up + uvstride * height;
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depth = 8;
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break;
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case GST_MAKE_FOURCC ('I', '4', '2', '0'):
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sampling = GST_VIDEO_FORMAT_I420;
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samplingstr = "YCbCr-4:2:0";
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pgroup = 6;
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xinc = yinc = 2;
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ystride = GST_ROUND_UP_4 (width);
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uvstride = GST_ROUND_UP_8 (width) / 2;
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up = ystride * GST_ROUND_UP_2 (height);
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vp = up + uvstride * GST_ROUND_UP_2 (height) / 2;
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depth = 8;
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break;
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case GST_MAKE_FOURCC ('U', 'Y', 'V', 'P'):
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#define GST_VIDEO_FORMAT_UYVP GST_VIDEO_FORMAT_UYVY /* FIXME */
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sampling = GST_VIDEO_FORMAT_UYVP;
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samplingstr = "YCbCr-4:2:2";
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pgroup = 4;
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xinc = 2;
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ystride = GST_ROUND_UP_2 (width) * 2;
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depth = 10;
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break;
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default:
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goto unknown_fourcc;
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}
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} else
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goto unknown_format;
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if (interlaced) {
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yinc *= 2;
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}
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if (depth == 10) {
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depthstr = "10";
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}
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rtpvrawpay->width = width;
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rtpvrawpay->height = height;
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rtpvrawpay->sampling = sampling;
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rtpvrawpay->pgroup = pgroup;
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rtpvrawpay->xinc = xinc;
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rtpvrawpay->yinc = yinc;
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rtpvrawpay->yp = yp;
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rtpvrawpay->up = up;
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rtpvrawpay->vp = vp;
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rtpvrawpay->ystride = ystride;
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rtpvrawpay->uvstride = uvstride;
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rtpvrawpay->interlaced = interlaced;
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rtpvrawpay->depth = depth;
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GST_DEBUG_OBJECT (payload, "width %d, height %d, sampling %d", width, height,
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sampling);
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GST_DEBUG_OBJECT (payload, "yp %d, up %d, vp %d", yp, up, vp);
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GST_DEBUG_OBJECT (payload, "pgroup %d, ystride %d, uvstride %d", pgroup,
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ystride, uvstride);
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wstr = g_strdup_printf ("%d", rtpvrawpay->width);
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hstr = g_strdup_printf ("%d", rtpvrawpay->height);
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gst_basertppayload_set_options (payload, "video", TRUE, "RAW", 90000);
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if (interlaced) {
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res = gst_basertppayload_set_outcaps (payload, "sampling", G_TYPE_STRING,
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samplingstr, "depth", G_TYPE_STRING, depthstr, "width", G_TYPE_STRING,
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wstr, "height", G_TYPE_STRING, hstr, "colorimetry", G_TYPE_STRING,
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colorimetrystr, "interlace", G_TYPE_STRING, "true", NULL);
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} else {
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res = gst_basertppayload_set_outcaps (payload, "sampling", G_TYPE_STRING,
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samplingstr, "depth", G_TYPE_STRING, depthstr, "width", G_TYPE_STRING,
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wstr, "height", G_TYPE_STRING, hstr, "colorimetry", G_TYPE_STRING,
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colorimetrystr, NULL);
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}
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g_free (wstr);
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g_free (hstr);
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return res;
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/* ERRORS */
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unknown_mask:
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{
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GST_ERROR_OBJECT (payload, "unknown red mask specified");
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return FALSE;
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}
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unknown_format:
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{
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GST_ERROR_OBJECT (payload, "unknown caps format");
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return FALSE;
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}
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unknown_fourcc:
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{
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GST_ERROR_OBJECT (payload, "invalid or missing fourcc");
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return FALSE;
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}
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missing_dimension:
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{
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GST_ERROR_OBJECT (payload, "missing width or height property");
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return FALSE;
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}
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}
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static GstFlowReturn
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gst_rtp_vraw_pay_handle_buffer (GstBaseRTPPayload * payload, GstBuffer * buffer)
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{
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GstRtpVRawPay *rtpvrawpay;
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GstFlowReturn ret = GST_FLOW_OK;
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guint line, offset;
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guint8 *data, *yp, *up, *vp;
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guint ystride, uvstride;
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guint size, pgroup;
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guint mtu;
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guint width, height;
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gint field;
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rtpvrawpay = GST_RTP_VRAW_PAY (payload);
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data = GST_BUFFER_DATA (buffer);
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size = GST_BUFFER_SIZE (buffer);
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GST_LOG_OBJECT (rtpvrawpay, "new frame of %u bytes", size);
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/* get pointer and strides of the planes */
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yp = data + rtpvrawpay->yp;
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up = data + rtpvrawpay->up;
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vp = data + rtpvrawpay->vp;
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ystride = rtpvrawpay->ystride;
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uvstride = rtpvrawpay->uvstride;
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mtu = GST_BASE_RTP_PAYLOAD_MTU (payload);
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/* amount of bytes for one pixel */
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pgroup = rtpvrawpay->pgroup;
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width = rtpvrawpay->width;
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height = rtpvrawpay->height;
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/* start with line 0, offset 0 */
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for (field = 0; field < 1 + rtpvrawpay->interlaced; field++) {
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line = field;
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offset = 0;
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/* write all lines */
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while (line < height) {
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guint left;
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GstBuffer *out;
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guint8 *outdata, *headers;
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gboolean next_line;
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guint length, cont, pixels;
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/* get the max allowed payload length size, we try to fill the complete MTU */
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left = gst_rtp_buffer_calc_payload_len (mtu, 0, 0);
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out = gst_rtp_buffer_new_allocate (left, 0, 0);
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if (field == 0) {
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GST_BUFFER_TIMESTAMP (out) = GST_BUFFER_TIMESTAMP (buffer);
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} else {
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GST_BUFFER_TIMESTAMP (out) = GST_BUFFER_TIMESTAMP (buffer) +
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GST_BUFFER_DURATION (buffer) / 2;
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}
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outdata = gst_rtp_buffer_get_payload (out);
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GST_LOG_OBJECT (rtpvrawpay, "created buffer of size %u for MTU %u", left,
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mtu);
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/*
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Extended Sequence Number | Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |F| Line No |C| Offset |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Length |F| Line No |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |C| Offset | .
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ .
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* . .
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* . Two (partial) lines of video data .
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* . .
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* +---------------------------------------------------------------+
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*/
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/* need 2 bytes for the extended sequence number */
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*outdata++ = 0;
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*outdata++ = 0;
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left -= 2;
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/* the headers start here */
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headers = outdata;
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/* while we can fit at least one header and one pixel */
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while (left > (6 + pgroup)) {
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/* we need a 6 bytes header */
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left -= 6;
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/* get how may bytes we need for the remaining pixels */
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pixels = width - offset;
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length = (pixels * pgroup) / rtpvrawpay->xinc;
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if (left >= length) {
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/* pixels and header fit completely, we will write them and skip to the
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* next line. */
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next_line = TRUE;
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|
} else {
|
|
/* line does not fit completely, see how many pixels fit */
|
|
pixels = (left / pgroup) * rtpvrawpay->xinc;
|
|
length = (pixels * pgroup) / rtpvrawpay->xinc;
|
|
next_line = FALSE;
|
|
}
|
|
GST_LOG_OBJECT (rtpvrawpay, "filling %u bytes in %u pixels", length,
|
|
pixels);
|
|
left -= length;
|
|
|
|
/* write length */
|
|
*outdata++ = (length >> 8) & 0xff;
|
|
*outdata++ = length & 0xff;
|
|
|
|
/* write line no */
|
|
*outdata++ = ((line >> 8) & 0x7f) | ((field << 7) & 0x80);
|
|
*outdata++ = line & 0xff;
|
|
|
|
if (next_line) {
|
|
/* go to next line we do this here to make the check below easier */
|
|
line += rtpvrawpay->yinc;
|
|
}
|
|
|
|
/* calculate continuation marker */
|
|
cont = (left > (6 + pgroup) && line < height) ? 0x80 : 0x00;
|
|
|
|
/* write offset and continuation marker */
|
|
*outdata++ = ((offset >> 8) & 0x7f) | cont;
|
|
*outdata++ = offset & 0xff;
|
|
|
|
if (next_line) {
|
|
/* reset offset */
|
|
offset = 0;
|
|
GST_LOG_OBJECT (rtpvrawpay, "go to next line %u", line);
|
|
} else {
|
|
offset += pixels;
|
|
GST_LOG_OBJECT (rtpvrawpay, "next offset %u", offset);
|
|
}
|
|
|
|
if (!cont)
|
|
break;
|
|
}
|
|
GST_LOG_OBJECT (rtpvrawpay, "consumed %u bytes",
|
|
(guint) (outdata - headers));
|
|
|
|
/* second pass, read headers and write the data */
|
|
while (TRUE) {
|
|
guint offs, lin;
|
|
|
|
/* read length and cont */
|
|
length = (headers[0] << 8) | headers[1];
|
|
lin = ((headers[2] & 0x7f) << 8) | headers[3];
|
|
offs = ((headers[4] & 0x7f) << 8) | headers[5];
|
|
cont = headers[4] & 0x80;
|
|
pixels = length / pgroup;
|
|
headers += 6;
|
|
|
|
GST_LOG_OBJECT (payload,
|
|
"writing length %u, line %u, offset %u, cont %d", length, lin, offs,
|
|
cont);
|
|
|
|
switch (rtpvrawpay->sampling) {
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
offs /= rtpvrawpay->xinc;
|
|
memcpy (outdata, yp + (lin * ystride) + (offs * pgroup), length);
|
|
outdata += length;
|
|
break;
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
{
|
|
gint i;
|
|
guint8 *datap;
|
|
|
|
datap = yp + (lin * ystride) + (offs * 4);
|
|
|
|
for (i = 0; i < pixels; i++) {
|
|
*outdata++ = datap[2];
|
|
*outdata++ = datap[1];
|
|
*outdata++ = datap[3];
|
|
datap += 4;
|
|
}
|
|
break;
|
|
}
|
|
case GST_VIDEO_FORMAT_I420:
|
|
{
|
|
gint i;
|
|
guint uvoff;
|
|
guint8 *yd1p, *yd2p, *udp, *vdp;
|
|
|
|
yd1p = yp + (lin * ystride) + (offs);
|
|
yd2p = yd1p + ystride;
|
|
uvoff =
|
|
(lin / rtpvrawpay->yinc * uvstride) + (offs / rtpvrawpay->xinc);
|
|
udp = up + uvoff;
|
|
vdp = vp + uvoff;
|
|
|
|
for (i = 0; i < pixels; i++) {
|
|
*outdata++ = *yd1p++;
|
|
*outdata++ = *yd1p++;
|
|
*outdata++ = *yd2p++;
|
|
*outdata++ = *yd2p++;
|
|
*outdata++ = *udp++;
|
|
*outdata++ = *vdp++;
|
|
}
|
|
break;
|
|
}
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
{
|
|
gint i;
|
|
guint uvoff;
|
|
guint8 *ydp, *udp, *vdp;
|
|
|
|
ydp = yp + (lin * ystride) + offs;
|
|
uvoff =
|
|
(lin / rtpvrawpay->yinc * uvstride) + (offs / rtpvrawpay->xinc);
|
|
udp = up + uvoff;
|
|
vdp = vp + uvoff;
|
|
|
|
for (i = 0; i < pixels; i++) {
|
|
*outdata++ = *udp++;
|
|
*outdata++ = *ydp++;
|
|
*outdata++ = *ydp++;
|
|
*outdata++ = *vdp++;
|
|
*outdata++ = *ydp++;
|
|
*outdata++ = *ydp++;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
gst_buffer_unref (out);
|
|
goto unknown_sampling;
|
|
}
|
|
|
|
if (!cont)
|
|
break;
|
|
}
|
|
|
|
if (line >= height) {
|
|
GST_LOG_OBJECT (rtpvrawpay, "field/frame complete, set marker");
|
|
gst_rtp_buffer_set_marker (out, TRUE);
|
|
}
|
|
if (left > 0) {
|
|
GST_LOG_OBJECT (rtpvrawpay, "we have %u bytes left", left);
|
|
GST_BUFFER_SIZE (out) -= left;
|
|
}
|
|
|
|
/* push buffer */
|
|
ret = gst_basertppayload_push (payload, out);
|
|
}
|
|
|
|
}
|
|
gst_buffer_unref (buffer);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
unknown_sampling:
|
|
{
|
|
GST_ELEMENT_ERROR (payload, STREAM, FORMAT,
|
|
(NULL), ("unimplemented sampling"));
|
|
gst_buffer_unref (buffer);
|
|
return GST_FLOW_NOT_SUPPORTED;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_rtp_vraw_pay_plugin_init (GstPlugin * plugin)
|
|
{
|
|
return gst_element_register (plugin, "rtpvrawpay",
|
|
GST_RANK_SECONDARY, GST_TYPE_RTP_VRAW_PAY);
|
|
}
|