/* GStreamer * Copyright (C) <2008> Wim Taymans * * 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include "gstrtpvrawpay.h" GST_DEBUG_CATEGORY_STATIC (rtpvrawpay_debug); #define GST_CAT_DEFAULT (rtpvrawpay_debug) /* elementfactory information */ static const GstElementDetails gst_rtp_vrawpay_details = GST_ELEMENT_DETAILS ("RTP packet payloader", "Codec/Payloader/Network", "Payload raw video as RTP packets (RFC 4175)", "Wim Taymans "); static GstStaticPadTemplate gst_rtp_vraw_pay_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-raw-rgb, " "bpp = (int) 24, " "depth = (int) 24, " "endianness = (int) BIG_ENDIAN, " "red_mask = (int) 0xFF000000, " "green_mask = (int) 0x00FF0000, " "blue_mask = (int) 0x0000FF00, " "width = (int) [ 1, 32767 ], " "height = (int) [ 1, 32767 ]; " "video/x-raw-rgb, " "bpp = (int) 32, " "depth = (int) 32, " "endianness = (int) BIG_ENDIAN, " "red_mask = (int) 0xFF000000, " "green_mask = (int) 0x00FF0000, " "blue_mask = (int) 0x0000FF00, " "alpha_mask = (int) 0x000000FF, " "width = (int) [ 1, 32767 ], " "height = (int) [ 1, 32767 ]; " "video/x-raw-rgb, " "bpp = (int) 24, " "depth = (int) 24, " "endianness = (int) BIG_ENDIAN, " "red_mask = (int) 0x0000FF00, " "green_mask = (int) 0x00FF0000, " "blue_mask = (int) 0xFF000000, " "width = (int) [ 1, 32767 ], " "height = (int) [ 1, 32767 ]; " "video/x-raw-rgb, " "bpp = (int) 32, " "depth = (int) 32, " "endianness = (int) BIG_ENDIAN, " "red_mask = (int) 0x0000FF00, " "green_mask = (int) 0x00FF0000, " "blue_mask = (int) 0xFF000000, " "alpha_mask = (int) 0x000000FF, " "width = (int) [ 1, 32767 ], " "height = (int) [ 1, 32767 ]; " "video/x-raw-yuv, " "format = (fourcc) { AYUV, UYVY, I420, Y41B }, " "width = (int) [ 1, 32767 ], " "height = (int) [ 1, 32767 ]; ") ); static GstStaticPadTemplate gst_rtp_vraw_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) \"RAW\"," "sampling = (string) { \"RGB\", \"RGBA\", \"BGR\", \"BGRA\", " "\"YCbCr-4:4:4\", \"YCbCr-4:2:2\", \"YCbCr-4:2:0\", " "\"YCbCr-4:1:1\" }," /* we cannot express these as strings * "width = (string) [1 32767]," * "height = (string) [1 32767]," */ "depth = (string) { \"8\", \"10\", \"12\", \"16\" }," "colorimetry = (string) { \"BT601-5\", \"BT709-2\", \"SMPTE240M\" }" /* optional * interlace = * top-field-first = * chroma-position = (string) * gamma = (float) */ ) ); static void gst_rtp_vraw_pay_class_init (GstRtpVRawPayClass * klass); static void gst_rtp_vraw_pay_base_init (GstRtpVRawPayClass * klass); static void gst_rtp_vraw_pay_init (GstRtpVRawPay * rtpvrawpay); static void gst_rtp_vraw_pay_finalize (GObject * object); static gboolean gst_rtp_vraw_pay_setcaps (GstBaseRTPPayload * payload, GstCaps * caps); static GstFlowReturn gst_rtp_vraw_pay_handle_buffer (GstBaseRTPPayload * payload, GstBuffer * buffer); static GstBaseRTPPayloadClass *parent_class = NULL; static GType gst_rtp_vraw_pay_get_type (void) { static GType rtpvrawpay_type = 0; if (!rtpvrawpay_type) { static const GTypeInfo rtpvrawpay_info = { sizeof (GstRtpVRawPayClass), (GBaseInitFunc) gst_rtp_vraw_pay_base_init, NULL, (GClassInitFunc) gst_rtp_vraw_pay_class_init, NULL, NULL, sizeof (GstRtpVRawPay), 0, (GInstanceInitFunc) gst_rtp_vraw_pay_init, }; rtpvrawpay_type = g_type_register_static (GST_TYPE_BASE_RTP_PAYLOAD, "GstRtpVRawPay", &rtpvrawpay_info, 0); } return rtpvrawpay_type; } static void gst_rtp_vraw_pay_base_init (GstRtpVRawPayClass * klass) { GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_rtp_vraw_pay_src_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_rtp_vraw_pay_sink_template)); gst_element_class_set_details (element_class, &gst_rtp_vrawpay_details); } static void gst_rtp_vraw_pay_class_init (GstRtpVRawPayClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GstBaseRTPPayloadClass *gstbasertppayload_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gstbasertppayload_class = (GstBaseRTPPayloadClass *) klass; parent_class = g_type_class_peek_parent (klass); gobject_class->finalize = gst_rtp_vraw_pay_finalize; gstbasertppayload_class->set_caps = gst_rtp_vraw_pay_setcaps; gstbasertppayload_class->handle_buffer = gst_rtp_vraw_pay_handle_buffer; GST_DEBUG_CATEGORY_INIT (rtpvrawpay_debug, "rtpvrawpay", 0, "Raw video RTP Payloader"); } static void gst_rtp_vraw_pay_init (GstRtpVRawPay * rtpvrawpay) { } static void gst_rtp_vraw_pay_finalize (GObject * object) { GstRtpVRawPay *rtpvrawpay; rtpvrawpay = GST_RTP_VRAW_PAY (object); G_OBJECT_CLASS (parent_class)->finalize (object); } static gboolean gst_rtp_vraw_pay_setcaps (GstBaseRTPPayload * payload, GstCaps * caps) { GstRtpVRawPay *rtpvrawpay; GstStructure *s; gboolean res; const gchar *name; gint width, height; gint yp, up, vp; gint pgroup, ystride, uvstride = 0, xinc, yinc; GstVideoFormat sampling; const gchar *depthstr, *samplingstr, *colorimetrystr; gchar *wstr, *hstr; rtpvrawpay = GST_RTP_VRAW_PAY (payload); s = gst_caps_get_structure (caps, 0); /* start parsing the format */ name = gst_structure_get_name (s); /* these values are the only thing we can do */ depthstr = "8"; colorimetrystr = "SMPTE240M"; /* parse common width/height */ res = gst_structure_get_int (s, "width", &width); res &= gst_structure_get_int (s, "height", &height); if (!res) goto missing_dimension; yp = up = vp = 0; xinc = yinc = 1; if (!strcmp (name, "video/x-raw-rgb")) { gint amask, rmask; gboolean has_alpha; has_alpha = gst_structure_get_int (s, "alpha_mask", &amask); if (!gst_structure_get_int (s, "red_mask", &rmask)) goto unknown_mask; if (has_alpha) { pgroup = 4; ystride = width * 4; if (rmask == 0xFF000000) { sampling = GST_VIDEO_FORMAT_RGBA; samplingstr = "RGBA"; } else { sampling = GST_VIDEO_FORMAT_BGRA; samplingstr = "BGRA"; } } else { pgroup = 3; ystride = GST_ROUND_UP_4 (width * 3); if (rmask == 0xFF000000) { sampling = GST_VIDEO_FORMAT_RGB; samplingstr = "RGB"; } else { sampling = GST_VIDEO_FORMAT_BGR; samplingstr = "BGR"; } } } else if (!strcmp (name, "video/x-raw-yuv")) { guint32 fourcc; if (!gst_structure_get_fourcc (s, "format", &fourcc)) goto unknown_fourcc; GST_LOG_OBJECT (payload, "have fourcc %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (fourcc)); switch (fourcc) { case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'): sampling = GST_VIDEO_FORMAT_AYUV; samplingstr = "YCbCr-4:4:4"; pgroup = 3; ystride = width * 4; break; case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'): sampling = GST_VIDEO_FORMAT_UYVY; samplingstr = "YCbCr-4:2:2"; pgroup = 4; xinc = 2; ystride = GST_ROUND_UP_2 (width) * 2; break; case GST_MAKE_FOURCC ('Y', '4', '1', 'B'): sampling = GST_VIDEO_FORMAT_Y41B; samplingstr = "YCbCr-4:1:1"; pgroup = 6; xinc = 4; ystride = GST_ROUND_UP_4 (width); uvstride = GST_ROUND_UP_8 (width) / 4; up = ystride * height; vp = up + uvstride * height; break; case GST_MAKE_FOURCC ('I', '4', '2', '0'): sampling = GST_VIDEO_FORMAT_I420; samplingstr = "YCbCr-4:2:0"; pgroup = 6; xinc = yinc = 2; ystride = GST_ROUND_UP_4 (width); uvstride = GST_ROUND_UP_8 (width) / 2; up = ystride * GST_ROUND_UP_2 (height); vp = up + uvstride * GST_ROUND_UP_2 (height) / 2; break; default: goto unknown_fourcc; } } else goto unknown_format; rtpvrawpay->width = width; rtpvrawpay->height = height; rtpvrawpay->sampling = sampling; rtpvrawpay->pgroup = pgroup; rtpvrawpay->xinc = xinc; rtpvrawpay->yinc = yinc; rtpvrawpay->yp = yp; rtpvrawpay->up = up; rtpvrawpay->vp = vp; rtpvrawpay->ystride = ystride; rtpvrawpay->uvstride = uvstride; GST_DEBUG_OBJECT (payload, "width %d, height %d, sampling %d", width, height, sampling); GST_DEBUG_OBJECT (payload, "yp %d, up %d, vp %d", yp, up, vp); GST_DEBUG_OBJECT (payload, "pgroup %d, ystride %d, uvstride %d", pgroup, ystride, uvstride); wstr = g_strdup_printf ("%d", rtpvrawpay->width); hstr = g_strdup_printf ("%d", rtpvrawpay->height); gst_basertppayload_set_options (payload, "video", TRUE, "RAW", 90000); res = gst_basertppayload_set_outcaps (payload, "sampling", G_TYPE_STRING, samplingstr, "depth", G_TYPE_STRING, depthstr, "width", G_TYPE_STRING, wstr, "height", G_TYPE_STRING, hstr, "colorimetry", G_TYPE_STRING, colorimetrystr, NULL); g_free (wstr); g_free (hstr); return res; /* ERRORS */ unknown_mask: { GST_ERROR_OBJECT (payload, "unknown red mask specified"); return FALSE; } unknown_format: { GST_ERROR_OBJECT (payload, "unknown caps format"); return FALSE; } unknown_fourcc: { GST_ERROR_OBJECT (payload, "invalid or missing fourcc"); return FALSE; } missing_dimension: { GST_ERROR_OBJECT (payload, "missing width or height property"); return FALSE; } } static GstFlowReturn gst_rtp_vraw_pay_handle_buffer (GstBaseRTPPayload * payload, GstBuffer * buffer) { GstRtpVRawPay *rtpvrawpay; GstFlowReturn ret = GST_FLOW_OK; guint line, offset; guint8 *data, *yp, *up, *vp; guint ystride, uvstride; guint size, pgroup; guint mtu; guint width, height; rtpvrawpay = GST_RTP_VRAW_PAY (payload); data = GST_BUFFER_DATA (buffer); size = GST_BUFFER_SIZE (buffer); GST_LOG_OBJECT (rtpvrawpay, "new frame of %u bytes", size); /* get pointer and strides of the planes */ yp = data + rtpvrawpay->yp; up = data + rtpvrawpay->up; vp = data + rtpvrawpay->vp; ystride = rtpvrawpay->ystride; uvstride = rtpvrawpay->uvstride; mtu = GST_BASE_RTP_PAYLOAD_MTU (payload); /* amount of bytes for one pixel */ pgroup = rtpvrawpay->pgroup; width = rtpvrawpay->width; height = rtpvrawpay->height; /* start with line 0, offset 0 */ line = 0; offset = 0; /* write all lines */ while (line < height) { guint left; GstBuffer *out; guint8 *outdata, *headers; gboolean next_line; guint length, cont, pixels; /* get the max allowed payload length size, we try to fill the complete MTU */ left = gst_rtp_buffer_calc_payload_len (mtu, 0, 0); out = gst_rtp_buffer_new_allocate (left, 0, 0); GST_BUFFER_TIMESTAMP (out) = GST_BUFFER_TIMESTAMP (buffer); outdata = gst_rtp_buffer_get_payload (out); GST_LOG_OBJECT (rtpvrawpay, "created buffer of size %u for MTU %u", left, mtu); /* need 2 bytes for the extended sequence number */ *outdata++ = 0; *outdata++ = 0; left -= 2; /* the headers start here */ headers = outdata; /* while we can fit at least one header and one pixel */ while (left > (6 + pgroup)) { /* we need a 6 bytes header */ left -= 6; /* get how may bytes we need for the remaining pixels */ pixels = width - offset; length = (pixels * pgroup) / rtpvrawpay->xinc; if (left >= length) { /* pixels and header fit completely, we will write them and skip to the * next line. */ next_line = TRUE; } 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; *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 %d bytes", 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, "frame complete, set marker"); gst_rtp_buffer_set_marker (out, TRUE); } /* 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_NONE, GST_TYPE_RTP_VRAW_PAY); }