+2008-05-12 Wim Taymans <wim.taymans@collabora.co.uk>
+
+ Based on patch by: Olivier Crete <tester at tester dot ca>
+
+ * gst/rtp/Makefile.am:
+ * gst/rtp/gstrtp.c: (plugin_init):
+ * gst/rtp/gstrtpdvdepay.c: (gst_rtp_dv_depay_base_init),
+ (gst_rtp_dv_depay_class_init), (gst_rtp_dv_depay_init),
+ (parse_encode), (gst_rtp_dv_depay_setcaps),
+ (calculate_difblock_location), (gst_rtp_dv_depay_process),
+ (gst_rtp_dv_depay_reset), (gst_rtp_dv_depay_change_state),
+ (gst_rtp_dv_depay_plugin_init):
+ * gst/rtp/gstrtpdvdepay.h:
+ * gst/rtp/gstrtpdvpay.c: (gst_dv_pay_mode_get_type),
+ (gst_rtp_dv_pay_base_init), (gst_rtp_dv_pay_class_init),
+ (gst_rtp_dv_pay_init), (gst_dv_pay_set_property),
+ (gst_dv_pay_get_property), (gst_rtp_dv_pay_setcaps),
+ (gst_dv_pay_negotiate), (include_dif),
+ (gst_rtp_dv_pay_handle_buffer), (gst_rtp_dv_pay_plugin_init):
+ * gst/rtp/gstrtpdvpay.h:
+ Add DV pay and depayloaders. Fixes #532423.
+
2008-05-12 Mark Nauwelaerts <mnauw@users.sf.net>
* gst/matroska/matroska-demux.c:
gstrtp.c \
gstrtpdepay.c \
gstrtpac3depay.c \
+ gstrtpdvdepay.c \
+ gstrtpdvpay.c \
gstrtpilbcdepay.c \
gstrtpilbcpay.c \
gstrtpmpadepay.c \
gstrtpL16depay.h \
gstrtpL16pay.h \
gstrtpac3depay.h \
+ gstrtpdvdepay.h \
+ gstrtpdvpay.h \
gstrtpamrdepay.h \
gstrtpamrpay.h \
gstrtpilbcdepay.h \
#include "gstrtpdepay.h"
#include "gstrtpac3depay.h"
+#include "gstrtpdvdepay.h"
+#include "gstrtpdvpay.h"
#include "gstrtpilbcdepay.h"
#include "gstrtpilbcpay.h"
#include "gstrtppcmupay.h"
if (!gst_rtp_ac3_depay_plugin_init (plugin))
return FALSE;
+ if (!gst_rtp_dv_depay_plugin_init (plugin))
+ return FALSE;
+
+ if (!gst_rtp_dv_pay_plugin_init (plugin))
+ return FALSE;
+
if (!gst_rtp_ilbc_pay_plugin_init (plugin))
return FALSE;
--- /dev/null
+/* Farsight
+ * Copyright (C) 2006 Marcel Moreaux <marcelm@spacelabs.nl>
+ * (C) 2008 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * RTP DV depayloader.
+ *
+ * Important note for NTSC-users:
+ *
+ * Because the author uses PAL video, and he does not have proper DV
+ * documentation (the DV format specification is not freely available),
+ * this code may very well contain PAL-specific assumptions.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <gst/gst.h>
+
+#include "gstrtpdvdepay.h"
+
+GST_DEBUG_CATEGORY (rtpdvdepay_debug);
+#define GST_CAT_DEFAULT (rtpdvdepay_debug)
+/* Filter signals and args */
+enum
+{
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0,
+};
+
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/x-dv")
+ );
+
+static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("application/x-rtp, "
+ "media = (string) { \"video\", \"audio\" },"
+ "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
+ "encoding-name = (string) \"DV\", "
+ "clock-rate = (int) 90000,"
+ "encode = (string) { \"SD-VCR/525-60\", \"SD-VCR/625-50\", \"HD-VCR/1125-60\","
+ "\"HD-VCR/1250-50\", \"SDL-VCR/525-60\", \"SDL-VCR/625-50\","
+ "\"306M/525-60\", \"306M/625-50\", \"314M-25/525-60\","
+ "\"314M-25/625-50\", \"314M-50/525-60\", \"314M-50/625-50\" }"
+ /* optional parameters can't go in the template
+ * "audio = (string) { \"bundled\", \"none\" }"
+ */
+ )
+ );
+
+static GstStateChangeReturn
+gst_rtp_dv_depay_change_state (GstElement * element, GstStateChange transition);
+
+static GstBuffer *gst_rtp_dv_depay_process (GstBaseRTPDepayload * base,
+ GstBuffer * in);
+static gboolean gst_rtp_dv_depay_setcaps (GstBaseRTPDepayload * depayload,
+ GstCaps * caps);
+
+GST_BOILERPLATE (GstRTPDVDepay, gst_rtp_dv_depay, GstBaseRTPDepayload,
+ GST_TYPE_BASE_RTP_DEPAYLOAD)
+
+ static void gst_rtp_dv_depay_base_init (gpointer g_class)
+{
+ static GstElementDetails plugin_details = {
+ "RTP DV Depayloader",
+ "Codec/Depayloader/Network",
+ "Depayloads DV from RTP packets (RFC 3189)",
+ "Marcel Moreaux <marcelm@spacelabs.nl>, Wim Taymans <wim.taymans@gmail.com>"
+ };
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&src_factory));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&sink_factory));
+
+ gst_element_class_set_details (element_class, &plugin_details);
+}
+
+/* initialize the plugin's class */
+static void
+gst_rtp_dv_depay_class_init (GstRTPDVDepayClass * klass)
+{
+ GstElementClass *gstelement_class = (GstElementClass *) klass;
+ GstBaseRTPDepayloadClass *gstbasertpdepayload_class =
+ (GstBaseRTPDepayloadClass *) klass;
+ gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
+
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_rtp_dv_depay_change_state);
+
+ gstbasertpdepayload_class->process =
+ GST_DEBUG_FUNCPTR (gst_rtp_dv_depay_process);
+ gstbasertpdepayload_class->set_caps =
+ GST_DEBUG_FUNCPTR (gst_rtp_dv_depay_setcaps);
+
+ GST_DEBUG_CATEGORY_INIT (rtpdvdepay_debug, "rtpdvdepay", 0,
+ "DV RTP Depayloader");
+}
+
+/* initialize the new element
+ * instantiate pads and add them to element
+ * set functions
+ * initialize structure
+ */
+static void
+gst_rtp_dv_depay_init (GstRTPDVDepay * filter, GstRTPDVDepayClass * klass)
+{
+}
+
+static gboolean
+parse_encode (GstRTPDVDepay * rtpdvdepay, const gchar * encode)
+{
+ rtpdvdepay->width = 720;
+ if (!strcmp (encode, "314M-25/525-60")) {
+ rtpdvdepay->frame_size = 240000;
+ rtpdvdepay->height = 480;
+ rtpdvdepay->rate_num = 30000;
+ rtpdvdepay->rate_denom = 1001;
+ } else if (!strcmp (encode, "SD-VCR/525-60")) {
+ rtpdvdepay->frame_size = 120000;
+ rtpdvdepay->height = 480;
+ rtpdvdepay->rate_num = 30000;
+ rtpdvdepay->rate_denom = 1001;
+ } else if (!strcmp (encode, "314M-50/625-50")) {
+ rtpdvdepay->frame_size = 288000;
+ rtpdvdepay->height = 576;
+ rtpdvdepay->rate_num = 25;
+ rtpdvdepay->rate_denom = 1;
+ } else if (!strcmp (encode, "SD-VCR/625-50")) {
+ rtpdvdepay->frame_size = 144000;
+ rtpdvdepay->height = 576;
+ rtpdvdepay->rate_num = 25;
+ rtpdvdepay->rate_denom = 1;
+ } else if (!strcmp (encode, "314M-25/625-50")) {
+ rtpdvdepay->frame_size = 144000;
+ rtpdvdepay->height = 576;
+ rtpdvdepay->rate_num = 25;
+ rtpdvdepay->rate_denom = 1;
+ } else
+ rtpdvdepay->frame_size = -1;
+
+ return rtpdvdepay->frame_size != -1;
+}
+
+static gboolean
+gst_rtp_dv_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
+{
+ GstStructure *structure;
+ GstRTPDVDepay *rtpdvdepay;
+ GstCaps *srccaps;
+ gint clock_rate = 90000; /* default */
+ gboolean systemstream, ret;
+ const gchar *encode, *media;
+
+ rtpdvdepay = GST_RTP_DV_DEPAY (depayload);
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ if (gst_structure_has_field (structure, "clock-rate"))
+ gst_structure_get_int (structure, "clock-rate", &clock_rate);
+
+ /* we really need the encode property to figure out the frame size, it's also
+ * required by the spec */
+ if (!(encode = gst_structure_get_string (structure, "encode")))
+ goto no_encode;
+
+ /* figure out the size of one frame */
+ if (!parse_encode (rtpdvdepay, encode))
+ goto unknown_encode;
+
+ /* check the media, this tells us that the stream has video or not */
+ if (!(media = gst_structure_get_string (structure, "media")))
+ goto no_media;
+
+ systemstream = FALSE;
+
+ if (!strcmp (media, "audio")) {
+ /* we need a demuxer for audio only */
+ systemstream = TRUE;
+ } else if (!strcmp (media, "video")) {
+ const gchar *audio;
+
+ /* check the optional audio field, if it's present and set to bundled, we
+ * are dealing with a system stream. */
+ if ((audio = gst_structure_get_string (structure, "audio"))) {
+ if (!strcmp (audio, "bundled"))
+ systemstream = TRUE;
+ }
+ }
+
+ /* allocate accumulator */
+ rtpdvdepay->acc = gst_buffer_new_and_alloc (rtpdvdepay->frame_size);
+
+ /* Initialize the new accumulator frame.
+ * If the previous frame exists, copy that into the accumulator frame.
+ * This way, missing packets in the stream won't show up badly. */
+ memset (GST_BUFFER_DATA (rtpdvdepay->acc), 0, rtpdvdepay->frame_size);
+
+ srccaps = gst_caps_new_simple ("video/x-dv",
+ "systemstream", G_TYPE_BOOLEAN, systemstream,
+ "width", G_TYPE_INT, rtpdvdepay->width,
+ "height", G_TYPE_INT, rtpdvdepay->height,
+ "framerate", GST_TYPE_FRACTION, rtpdvdepay->rate_num,
+ rtpdvdepay->rate_denom, NULL);
+ ret = gst_pad_set_caps (depayload->srcpad, srccaps);
+ gst_caps_unref (srccaps);
+
+ depayload->clock_rate = clock_rate;
+ rtpdvdepay->negotiated = TRUE;
+
+ return ret;
+
+ /* ERRORS */
+no_encode:
+ {
+ GST_ERROR_OBJECT (rtpdvdepay, "required encode property not found in caps");
+ return FALSE;
+ }
+unknown_encode:
+ {
+ GST_ERROR_OBJECT (rtpdvdepay, "unknown encode property %s found", encode);
+ return FALSE;
+ }
+no_media:
+ {
+ GST_ERROR_OBJECT (rtpdvdepay, "required media property not found in caps");
+ return FALSE;
+ }
+}
+
+/* A DV frame consists of a bunch of 80-byte DIF blocks.
+ * Each DIF block contains a 3-byte header telling where in the DV frame the
+ * DIF block should go. We use this information to calculate its position.
+ */
+static guint
+calculate_difblock_location (guint8 * block)
+{
+ gint block_type, dif_sequence, dif_block;
+ guint location;
+
+ block_type = block[0] >> 5;
+ dif_sequence = block[1] >> 4;
+ dif_block = block[2];
+
+ switch (block_type) {
+ case 0: /* Header block */
+ location = dif_sequence * 150 * 80;
+ break;
+ case 1: /* Subcode block */
+ location = dif_sequence * 150 * 80 + (1 + dif_block) * 80;
+ break;
+ case 2: /* VAUX block */
+ location = dif_sequence * 150 * 80 + (3 + dif_block) * 80;
+ break;
+ case 3: /* Audio block */
+ location = dif_sequence * 150 * 80 + (6 + dif_block * 16) * 80;
+ break;
+ case 4: /* Video block */
+ location = dif_sequence * 150 * 80 +
+ (7 + (dif_block / 15) + dif_block) * 80;
+ break;
+ default: /* Something bogus */
+ GST_DEBUG ("UNKNOWN BLOCK");
+ location = -1;
+ break;
+ }
+ return location;
+}
+
+/* Process one RTP packet. Accumulate RTP payload in the proper place in a DV
+ * frame, and return that frame if we detect a new frame, or NULL otherwise.
+ * We assume a DV frame is 144000 bytes. That should accomodate PAL as well as
+ * NTSC.
+ */
+static GstBuffer *
+gst_rtp_dv_depay_process (GstBaseRTPDepayload * base, GstBuffer * in)
+{
+ GstBuffer *out = NULL;
+ guint8 *payload;
+ guint32 rtp_ts;
+ guint payload_len, location;
+ GstRTPDVDepay *dvdepay = GST_RTP_DV_DEPAY (base);
+ gboolean marker;
+
+ if (!dvdepay->negotiated)
+ goto not_negotiated;
+
+ marker = gst_rtp_buffer_get_marker (in);
+
+ /* Check if the received packet contains (the start of) a new frame, we do
+ * this by checking the RTP timestamp. */
+ rtp_ts = gst_rtp_buffer_get_timestamp (in);
+
+ /* we cannot copy the packet yet if the marker is set, we will do that below
+ * after taking out the data */
+ if (dvdepay->prev_ts != -1 && rtp_ts != dvdepay->prev_ts && !marker) {
+ /* the timestamp changed */
+ GST_DEBUG_OBJECT (dvdepay, "new frame with ts %u, old ts %u", rtp_ts,
+ dvdepay->prev_ts);
+
+ /* return copy of accumulator. */
+ out = gst_buffer_copy (dvdepay->acc);
+ }
+
+ /* Extract the payload */
+ payload_len = gst_rtp_buffer_get_payload_len (in);
+ payload = gst_rtp_buffer_get_payload (in);
+
+ /* copy all DIF chunks in their place. */
+ while (payload_len >= 80) {
+ /* Calculate where in the frame the payload should go */
+ location = calculate_difblock_location (payload);
+
+ /* Check if we received a header. We will not pass on frames until
+ * we've received a header, otherwise the DV decoder goes wacko. */
+ if (location == 0)
+ dvdepay->have_header = TRUE;
+
+ /* And copy it in, provided the location is sane. */
+ if (location >= 0 && location <= dvdepay->frame_size - 80)
+ memcpy (GST_BUFFER_DATA (dvdepay->acc) + location, payload, 80);
+
+ payload += 80;
+ payload_len -= 80;
+ }
+
+ if (marker) {
+ /* The marker marks the end of a frame that we need to push. The next frame
+ * will change the timestamp but we won't copy the accumulator again because
+ * we set the prev_ts to -1. */
+ out = gst_buffer_copy (dvdepay->acc);
+ GST_DEBUG_OBJECT (dvdepay, "marker bit complete frame %u", rtp_ts);
+ dvdepay->prev_ts = -1;
+ } else {
+ /* save last timestamp */
+ dvdepay->prev_ts = rtp_ts;
+ }
+ return out;
+
+ /* ERRORS */
+not_negotiated:
+ {
+ GST_ELEMENT_ERROR (dvdepay, STREAM, NOT_IMPLEMENTED,
+ (NULL), ("not negotiated"));
+ return NULL;
+ }
+}
+
+static void
+gst_rtp_dv_depay_reset (GstRTPDVDepay * depay)
+{
+ if (depay->acc)
+ gst_buffer_unref (depay->acc);
+ depay->acc = NULL;
+
+ depay->prev_ts = -1;
+ depay->have_header = FALSE;
+ depay->frame_nr = 0;
+ depay->negotiated = FALSE;
+}
+
+static GstStateChangeReturn
+gst_rtp_dv_depay_change_state (GstElement * element, GstStateChange transition)
+{
+ GstStateChangeReturn ret;
+ GstRTPDVDepay *depay = GST_RTP_DV_DEPAY (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ gst_rtp_dv_depay_reset (depay);
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
+ (element, transition), GST_STATE_CHANGE_FAILURE);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ gst_rtp_dv_depay_reset (depay);
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+gboolean
+gst_rtp_dv_depay_plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "rtpdvdepay",
+ GST_RANK_NONE, GST_TYPE_RTP_DV_DEPAY);
+}
--- /dev/null
+/* Farsight
+ * Copyright (C) 2006 Marcel Moreaux <marcelm@spacelabs.nl>
+ *
+ * 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.
+ */
+
+#ifndef __GSTRTPDVDEPAY_H__
+#define __GSTRTPDVDEPAY_H__
+
+#include <gst/gst.h>
+#include <gst/rtp/gstbasertpdepayload.h>
+
+G_BEGIN_DECLS
+
+/* #define's don't like whitespacey bits */
+#define GST_TYPE_RTP_DV_DEPAY (gst_rtp_dv_depay_get_type())
+#define GST_RTP_DV_DEPAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_DV_DEPAY,GstRTPDVDepay))
+#define GST_RTP_DV_DEPAY_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_DV_DEPAY,GstRTPDVDepay))
+#define GST_IS_RTP_DV_DEPAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_DV_DEPAY))
+#define GST_IS_RTP_DV_DEPAY_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_DV_DEPAY))
+
+typedef struct _GstRTPDVDepay GstRTPDVDepay;
+typedef struct _GstRTPDVDepayClass GstRTPDVDepayClass;
+
+struct _GstRTPDVDepay
+{
+ GstBaseRTPDepayload parent;
+
+ GstBuffer *acc;
+ guint frame_size;
+ guint frame_nr;
+ guint32 prev_ts;
+ gboolean have_header;
+
+ gint width, height;
+ gint rate_num, rate_denom;
+ gboolean negotiated;
+};
+
+struct _GstRTPDVDepayClass
+{
+ GstBaseRTPDepayloadClass parent_class;
+};
+
+GType gst_rtp_dv_depay_get_type (void);
+gboolean gst_rtp_dv_depay_plugin_init (GstPlugin * plugin);
+
+G_END_DECLS
+
+#endif /* __GSTRTPDVDEPAY_H__ */
--- /dev/null
+/* Farsight
+ * Copyright (C) 2006 Marcel Moreaux <marcelm@spacelabs.nl>
+ * (C) 2008 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <gst/rtp/gstrtpbuffer.h>
+
+#include "gstrtpdvpay.h"
+
+GST_DEBUG_CATEGORY (rtpdvpay_debug);
+#define GST_CAT_DEFAULT (rtpdvpay_debug)
+
+/* Elementfactory information */
+static GstElementDetails gst_rtp_dv_pay_details = {
+ "RTP DV Payloader",
+ "Codec/Payloader/Network",
+ "Payloads DV into RTP packets (RFC 3189)",
+ "Marcel Moreaux <marcelm@spacelabs.nl>, Wim Taymans <wim.taymans@gmail.com>"
+};
+
+#define DEFAULT_MODE GST_DV_PAY_MODE_VIDEO
+enum
+{
+ PROP_0,
+ PROP_MODE
+};
+
+/* takes both system and non-system streams */
+static GstStaticPadTemplate gst_rtp_dv_pay_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/x-dv")
+ );
+
+static GstStaticPadTemplate gst_rtp_dv_pay_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("application/x-rtp, "
+ "media = (string) { \"video\", \"audio\" } ,"
+ "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
+ "encoding-name = (string) \"DV\", "
+ "clock-rate = (int) 90000,"
+ "encode = (string) { \"SD-VCR/525-60\", \"SD-VCR/625-50\", \"HD-VCR/1125-60\","
+ "\"HD-VCR/1250-50\", \"SDL-VCR/525-60\", \"SDL-VCR/625-50\","
+ "\"306M/525-60\", \"306M/625-50\", \"314M-25/525-60\","
+ "\"314M-25/625-50\", \"314M-50/525-60\", \"314M-50/625-50\" }"
+ /* optional parameters can't go in the template
+ * "audio = (string) { \"bundled\", \"none\" }"
+ */
+ )
+ );
+
+static gboolean gst_rtp_dv_pay_setcaps (GstBaseRTPPayload * payload,
+ GstCaps * caps);
+static GstFlowReturn gst_rtp_dv_pay_handle_buffer (GstBaseRTPPayload * payload,
+ GstBuffer * buffer);
+
+#define GST_TYPE_DV_PAY_MODE (gst_dv_pay_mode_get_type())
+static GType
+gst_dv_pay_mode_get_type (void)
+{
+ static GType dv_pay_mode_type = 0;
+ static const GEnumValue dv_pay_modes[] = {
+ {GST_DV_PAY_MODE_VIDEO, "Video only", "video"},
+ {GST_DV_PAY_MODE_BUNDLED, "Video and Audio bundled", "bundled"},
+ {GST_DV_PAY_MODE_AUDIO, "Audio only", "audio"},
+ {0, NULL, NULL},
+ };
+
+ if (!dv_pay_mode_type) {
+ dv_pay_mode_type = g_enum_register_static ("GstDVPayMode", dv_pay_modes);
+ }
+ return dv_pay_mode_type;
+}
+
+
+static void gst_dv_pay_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_dv_pay_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+
+GST_BOILERPLATE (GstRTPDVPay, gst_rtp_dv_pay, GstBaseRTPPayload,
+ GST_TYPE_BASE_RTP_PAYLOAD)
+
+ static void gst_rtp_dv_pay_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rtp_dv_pay_sink_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rtp_dv_pay_src_template));
+ gst_element_class_set_details (element_class, &gst_rtp_dv_pay_details);
+}
+
+static void
+gst_rtp_dv_pay_class_init (GstRTPDVPayClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+ GstBaseRTPPayloadClass *gstbasertppayload_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+ gstbasertppayload_class = (GstBaseRTPPayloadClass *) klass;
+
+ gobject_class->set_property = gst_dv_pay_set_property;
+ gobject_class->get_property = gst_dv_pay_get_property;
+
+ gstbasertppayload_class->set_caps = gst_rtp_dv_pay_setcaps;
+ gstbasertppayload_class->handle_buffer = gst_rtp_dv_pay_handle_buffer;
+
+ g_object_class_install_property (gobject_class, PROP_MODE,
+ g_param_spec_enum ("mode", "Mode",
+ "The payload mode of payloading",
+ GST_TYPE_DV_PAY_MODE, DEFAULT_MODE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ GST_DEBUG_CATEGORY_INIT (rtpdvpay_debug, "rtpdvpay", 0, "DV RTP Payloader");
+}
+
+static void
+gst_rtp_dv_pay_init (GstRTPDVPay * rtpdvpay, GstRTPDVPayClass * klass)
+{
+}
+
+static void
+gst_dv_pay_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ GstRTPDVPay *rtpdvpay = GST_RTP_DV_PAY (object);
+
+ switch (prop_id) {
+ case PROP_MODE:
+ rtpdvpay->mode = g_value_get_enum (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_dv_pay_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstRTPDVPay *rtpdvpay = GST_RTP_DV_PAY (object);
+
+ switch (prop_id) {
+ case PROP_MODE:
+ g_value_set_enum (value, rtpdvpay->mode);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static gboolean
+gst_rtp_dv_pay_setcaps (GstBaseRTPPayload * payload, GstCaps * caps)
+{
+ GstRTPDVPay *rtpdvpay;
+
+ rtpdvpay = GST_RTP_DV_PAY (payload);
+
+ /* We don't do anything here, but we could check if it's a system stream and if
+ * it's not, default to sending the video only. We will negotiate downstream
+ * caps when we get to see the first frame. */
+
+ return TRUE;
+}
+
+static gboolean
+gst_dv_pay_negotiate (GstRTPDVPay * rtpdvpay, guint8 * data, guint size)
+{
+ gchar *encode, *media;
+ gboolean audio_bundled;
+
+ if ((data[3] & 0x80) == 0) { /* DSF flag */
+ /* it's an NTSC format */
+ if ((data[80 * 5 + 48 + 3] & 0x4) && (data[80 * 5 + 48] == 0x60)) { /* 4:2:2 sampling */
+ /* NTSC 50Mbps */
+ encode = "314M-25/525-60";
+ } else { /* 4:1:1 sampling */
+ /* NTSC 25Mbps */
+ encode = "SD-VCR/525-60";
+ }
+ } else {
+ /* it's a PAL format */
+ if ((data[80 * 5 + 48 + 3] & 0x4) && (data[80 * 5 + 48] == 0x60)) { /* 4:2:2 sampling */
+ /* PAL 50Mbps */
+ encode = "314M-50/625-50";
+ } else if ((data[5] & 0x07) == 0) { /* APT flag */
+ /* PAL 25Mbps 4:2:0 */
+ encode = "SD-VCR/625-50";
+ } else
+ /* PAL 25Mbps 4:1:1 */
+ encode = "314M-25/625-50";
+ }
+
+ media = "video";
+ audio_bundled = FALSE;
+
+ switch (rtpdvpay->mode) {
+ case GST_DV_PAY_MODE_AUDIO:
+ media = "audio";
+ break;
+ case GST_DV_PAY_MODE_BUNDLED:
+ audio_bundled = TRUE;
+ break;
+ default:
+ break;
+ }
+ gst_basertppayload_set_options (GST_BASE_RTP_PAYLOAD (rtpdvpay), media, TRUE,
+ "DV", 90000);
+
+ if (audio_bundled) {
+ gst_basertppayload_set_outcaps (GST_BASE_RTP_PAYLOAD (rtpdvpay),
+ "encode", G_TYPE_STRING, encode,
+ "audio", G_TYPE_STRING, "bundled", NULL);
+ } else {
+ gst_basertppayload_set_outcaps (GST_BASE_RTP_PAYLOAD (rtpdvpay),
+ "encode", G_TYPE_STRING, encode, NULL);
+ }
+ return TRUE;
+}
+
+static gboolean
+include_dif (GstRTPDVPay * rtpdvpay, guint8 * data)
+{
+ gint block_type;
+ gboolean res;
+
+ block_type = data[0] >> 5;
+
+ switch (block_type) {
+ case 0: /* Header block */
+ case 1: /* Subcode block */
+ case 2: /* VAUX block */
+ /* always include these blocks */
+ res = TRUE;
+ break;
+ case 3: /* Audio block */
+ /* never include audio if we are doing video only */
+ if (rtpdvpay->mode == GST_DV_PAY_MODE_VIDEO)
+ res = FALSE;
+ else
+ res = TRUE;
+ break;
+ case 4: /* Video block */
+ /* never include video if we are doing audio only */
+ if (rtpdvpay->mode == GST_DV_PAY_MODE_AUDIO)
+ res = FALSE;
+ else
+ res = TRUE;
+ break;
+ default: /* Something bogus, just ignore */
+ res = FALSE;
+ break;
+ }
+ return res;
+}
+
+/* Get a DV frame, chop it up in pieces, and push the pieces to the RTP layer.
+ */
+static GstFlowReturn
+gst_rtp_dv_pay_handle_buffer (GstBaseRTPPayload * basepayload,
+ GstBuffer * buffer)
+{
+ GstRTPDVPay *rtpdvpay;
+ guint max_payload_size;
+ GstBuffer *outbuf;
+ GstFlowReturn ret = GST_FLOW_OK;
+ gint hdrlen;
+ guint size;
+ guint8 *data;
+ guint8 *dest;
+ guint filled;
+
+ rtpdvpay = GST_RTP_DV_PAY (basepayload);
+
+ hdrlen = gst_rtp_buffer_calc_header_len (0);
+ /* DV frames are made up from a bunch of DIF blocks. DIF blocks are 80 bytes
+ * each, and we should put an integral number of them in each RTP packet.
+ * Therefore, we round the available room down to the nearest multiple of 80.
+ *
+ * The available room is just the packet MTU, minus the RTP header length. */
+ max_payload_size = ((GST_BASE_RTP_PAYLOAD_MTU (rtpdvpay) - hdrlen) / 80) * 80;
+
+ /* The length of the buffer to transmit. */
+ size = GST_BUFFER_SIZE (buffer);
+ data = GST_BUFFER_DATA (buffer);
+
+ GST_DEBUG_OBJECT (rtpdvpay,
+ "DV RTP payloader got buffer of %u bytes, splitting in %u byte "
+ "payload fragments, at time %" GST_TIME_FORMAT, size, max_payload_size,
+ GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
+
+ if (!rtpdvpay->negotiated) {
+ gst_dv_pay_negotiate (rtpdvpay, data, size);
+ /* if we have not yet scanned the stream for its type, do so now */
+ rtpdvpay->negotiated = TRUE;
+ }
+
+ outbuf = NULL;
+ dest = NULL;
+ filled = 0;
+
+ /* while we have a complete DIF chunks left */
+ while (size >= 80) {
+ /* Allocate a new buffer, set the timestamp */
+ if (outbuf == NULL) {
+ outbuf = gst_rtp_buffer_new_allocate (max_payload_size, 0, 0);
+ GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
+ dest = gst_rtp_buffer_get_payload (outbuf);
+ filled = 0;
+ }
+
+ /* inspect the DIF chunk, if we don't need to include it, skip to the next one. */
+ if (include_dif (rtpdvpay, data)) {
+ /* copy data in packet */
+ memcpy (dest, data, 80);
+
+ dest += 80;
+ filled += 80;
+ }
+
+ /* go to next dif chunk */
+ size -= 80;
+ data += 80;
+
+ /* push out the buffer if the next one would exceed the max packet size or
+ * when we are pushing the last packet */
+ if (filled + 80 > max_payload_size || size < 80) {
+ if (size < 160) {
+ guint hlen;
+
+ /* set marker */
+ gst_rtp_buffer_set_marker (outbuf, TRUE);
+
+ /* shrink buffer to last packet */
+ hlen = gst_rtp_buffer_get_header_len (outbuf);
+ gst_rtp_buffer_set_packet_len (outbuf, hlen + filled);
+ }
+ /* Push out the created piece, and check for errors. */
+ ret = gst_basertppayload_push (basepayload, outbuf);
+ if (ret != GST_FLOW_OK)
+ break;
+
+ outbuf = NULL;
+ }
+ }
+ gst_buffer_unref (buffer);
+
+ return ret;
+}
+
+gboolean
+gst_rtp_dv_pay_plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "rtpdvpay",
+ GST_RANK_NONE, GST_TYPE_RTP_DV_PAY);
+}
--- /dev/null
+/* Farsight
+ * Copyright (C) 2006 Marcel Moreaux <marcelm@spacelabs.nl>
+ *
+ * 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.
+ */
+
+
+#ifndef __GSTRTPDVPAY_H__
+#define __GSTRTPDVPAY_H__
+
+#include <gst/gst.h>
+#include <gst/rtp/gstbasertppayload.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstRTPDVPay GstRTPDVPay;
+typedef struct _GstRTPDVPayClass GstRTPDVPayClass;
+
+#define GST_TYPE_RTP_DV_PAY \
+ (gst_rtp_dv_pay_get_type())
+#define GST_RTP_DV_PAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_DV_PAY,GstRTPDVPay))
+#define GST_RTP_DV_PAY_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_DV_PAY,GstRTPDVPay))
+#define GST_IS_RTP_DV_PAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_DV_PAY))
+#define GST_IS_RTP_DV_PAY_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_DV_PAY))
+
+typedef enum
+{
+ GST_DV_PAY_MODE_VIDEO,
+ GST_DV_PAY_MODE_BUNDLED,
+ GST_DV_PAY_MODE_AUDIO
+} GstDVPayMode;
+
+struct _GstRTPDVPay
+{
+ GstBaseRTPPayload payload;
+
+ gboolean negotiated;
+ GstDVPayMode mode;
+};
+
+struct _GstRTPDVPayClass
+{
+ GstBaseRTPPayloadClass parent_class;
+};
+
+gboolean gst_rtp_dv_pay_plugin_init (GstPlugin * plugin);
+
+G_END_DECLS
+
+#endif /* __GSTRTPDVPAY_H__ */
projects / platform / upstream / gst-plugins-good.git / commitdiff