diff options
author | Wim Taymans <wim.taymans@gmail.com> | 2005-09-06 15:50:58 +0000 |
---|---|---|
committer | Wim Taymans <wim.taymans@gmail.com> | 2005-09-06 15:50:58 +0000 |
commit | 98039503e90d89459a599cb3dc41955ff81482a6 (patch) | |
tree | b8d3423ee9a01c48a4d16dc6b9b7594421800cba /gst/rtp/gstrtpmp4vdepay.c | |
parent | a0fc3846597e209c141cbc348c052fa2feb90e23 (diff) |
gst/rtp/: Added mpeg4 video payload encoder/decoder.
Original commit message from CVS:
* gst/rtp/Makefile.am:
* gst/rtp/gstrtp.c: (plugin_init):
* gst/rtp/gstrtpmp4vdec.c: (gst_rtpmp4vdec_get_type),
(gst_rtpmp4vdec_base_init), (gst_rtpmp4vdec_class_init),
(gst_rtpmp4vdec_init), (gst_rtpmp4vdec_setcaps),
(gst_rtpmp4vdec_chain), (gst_rtpmp4vdec_set_property),
(gst_rtpmp4vdec_get_property), (gst_rtpmp4vdec_change_state),
(gst_rtpmp4vdec_plugin_init):
* gst/rtp/gstrtpmp4vdec.h:
* gst/rtp/gstrtpmp4venc.c: (gst_rtpmp4venc_get_type),
(gst_rtpmp4venc_base_init), (gst_rtpmp4venc_class_init),
(gst_rtpmp4venc_init), (gst_rtpmp4venc_setcaps),
(gst_rtpmp4venc_flush), (gst_rtpmp4venc_chain),
(gst_rtpmp4venc_set_property), (gst_rtpmp4venc_get_property),
(gst_rtpmp4venc_change_state), (gst_rtpmp4venc_plugin_init):
* gst/rtp/gstrtpmp4venc.h:
* gst/rtp/gstrtpmpadec.c: (gst_rtpmpadec_chain):
* gst/rtp/gstrtpmpaenc.c: (gst_rtpmpaenc_flush):
Added mpeg4 video payload encoder/decoder.
Added some docs in mpa payloader.
Diffstat (limited to 'gst/rtp/gstrtpmp4vdepay.c')
-rw-r--r-- | gst/rtp/gstrtpmp4vdepay.c | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/gst/rtp/gstrtpmp4vdepay.c b/gst/rtp/gstrtpmp4vdepay.c new file mode 100644 index 00000000..39ab5df9 --- /dev/null +++ b/gst/rtp/gstrtpmp4vdepay.c @@ -0,0 +1,309 @@ +/* GStreamer + * Copyright (C) <2005> Wim Taymans <wim@fluendo.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 + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <gst/rtp/gstrtpbuffer.h> + +#include <string.h> +#include "gstrtpmp4vdec.h" + +/* elementfactory information */ +static GstElementDetails gst_rtp_mp4vdec_details = { + "RTP packet parser", + "Codec/Parser/Network", + "Extracts MPEG4 video from RTP packets (RFC 3016)", + "Wim Taymans <wim@fluendo.com>" +}; + +/* RtpMP4VDec signals and args */ +enum +{ + /* FILL ME */ + LAST_SIGNAL +}; + +enum +{ + ARG_0, + ARG_FREQUENCY +}; + +static GstStaticPadTemplate gst_rtpmp4vdec_src_template = +GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("video/mpeg," + "mpegversion=(int) 4," "systemstream=(boolean)false") + ); + +static GstStaticPadTemplate gst_rtpmp4vdec_sink_template = +GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("application/x-rtp" + /* All optional parameters + * + * "rate=(int) [1, MAX]," + * "profile-level-id=[1,MAX]" + * "config=" + */ + ) + ); + + +static void gst_rtpmp4vdec_class_init (GstRtpMP4VDecClass * klass); +static void gst_rtpmp4vdec_base_init (GstRtpMP4VDecClass * klass); +static void gst_rtpmp4vdec_init (GstRtpMP4VDec * rtpmp4vdec); + +static gboolean gst_rtpmp4vdec_setcaps (GstPad * pad, GstCaps * caps); +static GstFlowReturn gst_rtpmp4vdec_chain (GstPad * pad, GstBuffer * buffer); + +static void gst_rtpmp4vdec_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_rtpmp4vdec_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); + +static GstStateChangeReturn gst_rtpmp4vdec_change_state (GstElement * element, + GstStateChange transition); + +static GstElementClass *parent_class = NULL; + +static GType +gst_rtpmp4vdec_get_type (void) +{ + static GType rtpmp4vdec_type = 0; + + if (!rtpmp4vdec_type) { + static const GTypeInfo rtpmp4vdec_info = { + sizeof (GstRtpMP4VDecClass), + (GBaseInitFunc) gst_rtpmp4vdec_base_init, + NULL, + (GClassInitFunc) gst_rtpmp4vdec_class_init, + NULL, + NULL, + sizeof (GstRtpMP4VDec), + 0, + (GInstanceInitFunc) gst_rtpmp4vdec_init, + }; + + rtpmp4vdec_type = + g_type_register_static (GST_TYPE_ELEMENT, "GstRtpMP4VDec", + &rtpmp4vdec_info, 0); + } + return rtpmp4vdec_type; +} + +static void +gst_rtpmp4vdec_base_init (GstRtpMP4VDecClass * klass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gst_rtpmp4vdec_src_template)); + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gst_rtpmp4vdec_sink_template)); + + gst_element_class_set_details (element_class, &gst_rtp_mp4vdec_details); +} + +static void +gst_rtpmp4vdec_class_init (GstRtpMP4VDecClass * klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + + gobject_class = (GObjectClass *) klass; + gstelement_class = (GstElementClass *) klass; + + parent_class = g_type_class_ref (GST_TYPE_ELEMENT); + + gobject_class->set_property = gst_rtpmp4vdec_set_property; + gobject_class->get_property = gst_rtpmp4vdec_get_property; + + gstelement_class->change_state = gst_rtpmp4vdec_change_state; +} + +static void +gst_rtpmp4vdec_init (GstRtpMP4VDec * rtpmp4vdec) +{ + rtpmp4vdec->srcpad = + gst_pad_new_from_template (gst_static_pad_template_get + (&gst_rtpmp4vdec_src_template), "src"); + gst_element_add_pad (GST_ELEMENT (rtpmp4vdec), rtpmp4vdec->srcpad); + + rtpmp4vdec->sinkpad = + gst_pad_new_from_template (gst_static_pad_template_get + (&gst_rtpmp4vdec_sink_template), "sink"); + gst_pad_set_setcaps_function (rtpmp4vdec->sinkpad, gst_rtpmp4vdec_setcaps); + gst_pad_set_chain_function (rtpmp4vdec->sinkpad, gst_rtpmp4vdec_chain); + gst_element_add_pad (GST_ELEMENT (rtpmp4vdec), rtpmp4vdec->sinkpad); +} + +static gboolean +gst_rtpmp4vdec_setcaps (GstPad * pad, GstCaps * caps) +{ + GstStructure *structure; + GstRtpMP4VDec *rtpmp4vdec; + GstCaps *srccaps; + + rtpmp4vdec = GST_RTP_MP4V_DEC (GST_OBJECT_PARENT (pad)); + + structure = gst_caps_get_structure (caps, 0); + + if (!gst_structure_get_int (structure, "rate", &rtpmp4vdec->rate)) + rtpmp4vdec->rate = 90000; + + srccaps = gst_caps_new_simple ("video/mpeg", + "mpegversion", G_TYPE_INT, 4, + "systemstream", G_TYPE_BOOLEAN, FALSE, NULL); + gst_pad_set_caps (rtpmp4vdec->srcpad, srccaps); + gst_caps_unref (srccaps); + + return TRUE; +} + +static GstFlowReturn +gst_rtpmp4vdec_chain (GstPad * pad, GstBuffer * buf) +{ + GstRtpMP4VDec *rtpmp4vdec; + GstBuffer *outbuf; + GstFlowReturn ret; + + rtpmp4vdec = GST_RTP_MP4V_DEC (gst_pad_get_parent (pad)); + + if (!gst_rtpbuffer_validate (buf)) + goto bad_packet; + + { + gint payload_len; + guint8 *payload; + guint32 timestamp; + + payload_len = gst_rtpbuffer_get_payload_len (buf); + payload = gst_rtpbuffer_get_payload (buf); + + timestamp = gst_rtpbuffer_get_timestamp (buf); + + outbuf = gst_buffer_new_and_alloc (payload_len); + memcpy (GST_BUFFER_DATA (outbuf), payload, payload_len); + + gst_adapter_push (rtpmp4vdec->adapter, outbuf); + + /* if this was the last packet of the VOP, create and push a buffer */ + if (gst_rtpbuffer_get_marker (buf)) { + guint avail; + + avail = gst_adapter_available (rtpmp4vdec->adapter); + + outbuf = gst_buffer_new_and_alloc (avail); + GST_BUFFER_MALLOCDATA (outbuf) = + gst_adapter_take (rtpmp4vdec->adapter, avail); + GST_BUFFER_DATA (outbuf) = GST_BUFFER_MALLOCDATA (outbuf); + gst_buffer_set_caps (outbuf, GST_PAD_CAPS (rtpmp4vdec->srcpad)); + GST_BUFFER_TIMESTAMP (outbuf) = timestamp * GST_SECOND / rtpmp4vdec->rate; + + GST_DEBUG ("gst_rtpmp4vdec_chain: pushing buffer of size %d", + GST_BUFFER_SIZE (outbuf)); + + ret = gst_pad_push (rtpmp4vdec->srcpad, outbuf); + } else { + ret = GST_FLOW_OK; + } + gst_buffer_unref (buf); + } + gst_object_unref (rtpmp4vdec); + + return ret; +bad_packet: + { + GST_DEBUG ("Packet did not validate"); + gst_buffer_unref (buf); + gst_object_unref (rtpmp4vdec); + + return GST_FLOW_ERROR; + } +} + +static void +gst_rtpmp4vdec_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstRtpMP4VDec *rtpmp4vdec; + + rtpmp4vdec = GST_RTP_MP4V_DEC (object); + + switch (prop_id) { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_rtpmp4vdec_get_property (GObject * object, guint prop_id, GValue * value, + GParamSpec * pspec) +{ + GstRtpMP4VDec *rtpmp4vdec; + + rtpmp4vdec = GST_RTP_MP4V_DEC (object); + + switch (prop_id) { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static GstStateChangeReturn +gst_rtpmp4vdec_change_state (GstElement * element, GstStateChange transition) +{ + GstRtpMP4VDec *rtpmp4vdec; + GstStateChangeReturn ret; + + rtpmp4vdec = GST_RTP_MP4V_DEC (element); + + switch (transition) { + case GST_STATE_CHANGE_NULL_TO_READY: + rtpmp4vdec->adapter = gst_adapter_new (); + break; + case GST_STATE_CHANGE_READY_TO_PAUSED: + gst_adapter_clear (rtpmp4vdec->adapter); + rtpmp4vdec->rate = 90000; + break; + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); + + switch (transition) { + case GST_STATE_CHANGE_READY_TO_NULL: + g_object_unref (rtpmp4vdec->adapter); + rtpmp4vdec->adapter = NULL; + break; + default: + break; + } + return ret; +} + +gboolean +gst_rtpmp4vdec_plugin_init (GstPlugin * plugin) +{ + return gst_element_register (plugin, "rtpmp4vdec", + GST_RANK_NONE, GST_TYPE_RTP_MP4V_DEC); +} |