diff --git a/ChangeLog b/ChangeLog index 3512018d3a..6f53d8c6b5 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,25 @@ +2008-05-12 Wim Taymans + + Based on patch by: Olivier Crete + + * 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 * gst/matroska/matroska-demux.c: diff --git a/gst/rtp/Makefile.am b/gst/rtp/Makefile.am index e78d9bd7c6..a797f2b916 100644 --- a/gst/rtp/Makefile.am +++ b/gst/rtp/Makefile.am @@ -5,6 +5,8 @@ libgstrtp_la_SOURCES = \ gstrtp.c \ gstrtpdepay.c \ gstrtpac3depay.c \ + gstrtpdvdepay.c \ + gstrtpdvpay.c \ gstrtpilbcdepay.c \ gstrtpilbcpay.c \ gstrtpmpadepay.c \ @@ -61,6 +63,8 @@ noinst_HEADERS = \ gstrtpL16depay.h \ gstrtpL16pay.h \ gstrtpac3depay.h \ + gstrtpdvdepay.h \ + gstrtpdvpay.h \ gstrtpamrdepay.h \ gstrtpamrpay.h \ gstrtpilbcdepay.h \ diff --git a/gst/rtp/gstrtp.c b/gst/rtp/gstrtp.c index 5fde406921..5cf19a552b 100644 --- a/gst/rtp/gstrtp.c +++ b/gst/rtp/gstrtp.c @@ -23,6 +23,8 @@ #include "gstrtpdepay.h" #include "gstrtpac3depay.h" +#include "gstrtpdvdepay.h" +#include "gstrtpdvpay.h" #include "gstrtpilbcdepay.h" #include "gstrtpilbcpay.h" #include "gstrtppcmupay.h" @@ -70,6 +72,12 @@ plugin_init (GstPlugin * plugin) 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; diff --git a/gst/rtp/gstrtpdvdepay.c b/gst/rtp/gstrtpdvdepay.c new file mode 100644 index 0000000000..c61b20f6b7 --- /dev/null +++ b/gst/rtp/gstrtpdvdepay.c @@ -0,0 +1,419 @@ +/* Farsight + * Copyright (C) 2006 Marcel Moreaux + * (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. + */ + +/* + * 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 +#include +#include + +#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 , Wim Taymans " + }; + 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); +} diff --git a/gst/rtp/gstrtpdvdepay.h b/gst/rtp/gstrtpdvdepay.h new file mode 100644 index 0000000000..70234cad18 --- /dev/null +++ b/gst/rtp/gstrtpdvdepay.h @@ -0,0 +1,67 @@ +/* Farsight + * Copyright (C) 2006 Marcel Moreaux + * + * 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 +#include + +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__ */ diff --git a/gst/rtp/gstrtpdvpay.c b/gst/rtp/gstrtpdvpay.c new file mode 100644 index 0000000000..65cfaf987a --- /dev/null +++ b/gst/rtp/gstrtpdvpay.c @@ -0,0 +1,386 @@ +/* Farsight + * Copyright (C) 2006 Marcel Moreaux + * (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 + +#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 , Wim Taymans " +}; + +#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); +} diff --git a/gst/rtp/gstrtpdvpay.h b/gst/rtp/gstrtpdvpay.h new file mode 100644 index 0000000000..5aaf971d0e --- /dev/null +++ b/gst/rtp/gstrtpdvpay.h @@ -0,0 +1,67 @@ +/* Farsight + * Copyright (C) 2006 Marcel Moreaux + * + * 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 +#include + +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__ */