diff options
author | Wim Taymans <wim.taymans@gmail.com> | 2005-08-18 10:33:15 +0000 |
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committer | Wim Taymans <wim.taymans@gmail.com> | 2005-08-18 10:33:15 +0000 |
commit | 9a5c8cd25ef8fe33fb8b189f88725bfac5c68768 (patch) | |
tree | 8f14b039669348a7bb805c680293f30a4c560828 /gst/rtp/gstrtpmpapay.c | |
parent | a6c633b9ab883eee91c855dbec9a620acbdb944a (diff) |
gst/rtp/: Remove old code that is now in gst-libs/gst/rtp/.
Original commit message from CVS:
* gst/rtp/Makefile.am:
* gst/rtp/gstrtp-common.h:
* gst/rtp/gstrtp.c: (plugin_init):
* gst/rtp/gstrtpL16enc.h:
* gst/rtp/gstrtpdec.c: (gst_rtpdec_get_type),
(gst_rtpdec_class_init), (gst_rtpdec_chain_rtp),
(gst_rtpdec_chain_rtcp), (gst_rtpdec_change_state),
(gst_rtpdec_plugin_init):
* gst/rtp/gstrtph263pdec.c: (gst_rtph263pdec_get_type),
(gst_rtph263pdec_base_init), (gst_rtph263pdec_class_init),
(gst_rtph263pdec_init), (gst_rtph263pdec_chain),
(gst_rtph263pdec_set_property), (gst_rtph263pdec_get_property),
(gst_rtph263pdec_change_state), (gst_rtph263pdec_plugin_init):
* gst/rtp/gstrtph263pdec.h:
* gst/rtp/gstrtph263penc.c: (gst_rtph263penc_get_type),
(gst_rtph263penc_base_init), (gst_rtph263penc_class_init),
(gst_rtph263penc_init), (gst_rtph263penc_flush),
(gst_rtph263penc_chain), (gst_rtph263penc_set_property),
(gst_rtph263penc_get_property), (gst_rtph263penc_change_state),
(gst_rtph263penc_plugin_init):
* gst/rtp/gstrtph263penc.h:
* gst/rtp/gstrtpmpadec.c: (gst_rtpmpadec_get_type),
(gst_rtpmpadec_base_init), (gst_rtpmpadec_class_init),
(gst_rtpmpadec_init), (gst_rtpmpadec_chain),
(gst_rtpmpadec_set_property), (gst_rtpmpadec_get_property),
(gst_rtpmpadec_change_state), (gst_rtpmpadec_plugin_init):
* gst/rtp/gstrtpmpadec.h:
* gst/rtp/gstrtpmpaenc.c: (gst_rtpmpaenc_get_type),
(gst_rtpmpaenc_base_init), (gst_rtpmpaenc_class_init),
(gst_rtpmpaenc_init), (gst_rtpmpaenc_flush), (gst_rtpmpaenc_chain),
(gst_rtpmpaenc_set_property), (gst_rtpmpaenc_get_property),
(gst_rtpmpaenc_change_state), (gst_rtpmpaenc_plugin_init):
* gst/rtp/gstrtpmpaenc.h:
* gst/rtp/rtp-packet.c:
* gst/rtp/rtp-packet.h:
Remove old code that is now in gst-libs/gst/rtp/.
Added some payload/depayloaders.
* gst/udp/gstudpsink.c: (gst_udpsink_class_init):
Fix port number range.
Diffstat (limited to 'gst/rtp/gstrtpmpapay.c')
-rw-r--r-- | gst/rtp/gstrtpmpapay.c | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/gst/rtp/gstrtpmpapay.c b/gst/rtp/gstrtpmpapay.c new file mode 100644 index 00000000..6c77291f --- /dev/null +++ b/gst/rtp/gstrtpmpapay.c @@ -0,0 +1,331 @@ +/* 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 <string.h> + +#include <gst/rtp/gstrtpbuffer.h> + +#include "gstrtpmpaenc.h" + +/* elementfactory information */ +static GstElementDetails gst_rtp_mpaenc_details = { + "RTP packet parser", + "Codec/Parser/Network", + "Extracts MPEG audio from RTP packets", + "Wim Taymans <wim@fluendo.com>" +}; + +/* RtpMPAEnc signals and args */ +enum +{ + /* FILL ME */ + LAST_SIGNAL +}; + +#define DEFAULT_MTU 1024 + +enum +{ + PROP_0, + PROP_MTU +}; + +static GstStaticPadTemplate gst_rtpmpaenc_sink_template = +GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/mpeg") + ); + +static GstStaticPadTemplate gst_rtpmpaenc_src_template = +GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("application/x-rtp") + ); + + +static void gst_rtpmpaenc_class_init (GstRtpMPAEncClass * klass); +static void gst_rtpmpaenc_base_init (GstRtpMPAEncClass * klass); +static void gst_rtpmpaenc_init (GstRtpMPAEnc * rtpmpaenc); + +static GstFlowReturn gst_rtpmpaenc_chain (GstPad * pad, GstBuffer * buffer); + +static void gst_rtpmpaenc_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_rtpmpaenc_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); + +static GstElementStateReturn gst_rtpmpaenc_change_state (GstElement * element); + +static GstElementClass *parent_class = NULL; + +static GType +gst_rtpmpaenc_get_type (void) +{ + static GType rtpmpaenc_type = 0; + + if (!rtpmpaenc_type) { + static const GTypeInfo rtpmpaenc_info = { + sizeof (GstRtpMPAEncClass), + (GBaseInitFunc) gst_rtpmpaenc_base_init, + NULL, + (GClassInitFunc) gst_rtpmpaenc_class_init, + NULL, + NULL, + sizeof (GstRtpMPAEnc), + 0, + (GInstanceInitFunc) gst_rtpmpaenc_init, + }; + + rtpmpaenc_type = + g_type_register_static (GST_TYPE_ELEMENT, "GstRtpMPAEnc", + &rtpmpaenc_info, 0); + } + return rtpmpaenc_type; +} + +static void +gst_rtpmpaenc_base_init (GstRtpMPAEncClass * klass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gst_rtpmpaenc_src_template)); + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gst_rtpmpaenc_sink_template)); + + gst_element_class_set_details (element_class, &gst_rtp_mpaenc_details); +} + +static void +gst_rtpmpaenc_class_init (GstRtpMPAEncClass * 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_rtpmpaenc_set_property; + gobject_class->get_property = gst_rtpmpaenc_get_property; + + g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MTU, + g_param_spec_uint ("mtu", "MTU", + "Maximum size of one packet", + 28, G_MAXUINT, DEFAULT_MTU, G_PARAM_READWRITE)); + + gstelement_class->change_state = gst_rtpmpaenc_change_state; +} + +static void +gst_rtpmpaenc_init (GstRtpMPAEnc * rtpmpaenc) +{ + rtpmpaenc->srcpad = + gst_pad_new_from_template (gst_static_pad_template_get + (&gst_rtpmpaenc_src_template), "src"); + gst_element_add_pad (GST_ELEMENT (rtpmpaenc), rtpmpaenc->srcpad); + + rtpmpaenc->sinkpad = + gst_pad_new_from_template (gst_static_pad_template_get + (&gst_rtpmpaenc_sink_template), "sink"); + gst_pad_set_chain_function (rtpmpaenc->sinkpad, gst_rtpmpaenc_chain); + gst_element_add_pad (GST_ELEMENT (rtpmpaenc), rtpmpaenc->sinkpad); + + rtpmpaenc->adapter = gst_adapter_new (); + rtpmpaenc->mtu = DEFAULT_MTU; +} + +static GstFlowReturn +gst_rtpmpaenc_flush (GstRtpMPAEnc * rtpmpaenc) +{ + guint avail; + GstBuffer *outbuf; + GstFlowReturn ret; + guint16 frag_offset; + + /* the data available in the adapter is either smaller + * than the MTU or bigger. In the case it is smaller, the complete + * adapter contents can be put in one packet. In the case the + * adapter has more than one MTU, we need to split the MPA data + * over multiple packets. The frag_offset in each packet header + * needs to be updated with the position in the MPA frame. */ + avail = gst_adapter_available (rtpmpaenc->adapter); + + ret = GST_FLOW_OK; + + frag_offset = 0; + while (avail > 0) { + guint towrite; + guint8 *payload; + guint8 *data; + guint payload_len; + guint packet_len; + + /* this will be the total lenght of the packet */ + packet_len = gst_rtpbuffer_calc_packet_len (4 + avail, 0, 0); + + /* fill one MTU or all available bytes */ + towrite = MIN (packet_len, rtpmpaenc->mtu); + + /* this is the payload length */ + payload_len = gst_rtpbuffer_calc_payload_len (towrite, 0, 0); + + /* create buffer to hold the payload */ + outbuf = gst_rtpbuffer_new_allocate (payload_len, 0, 0); + + payload_len -= 4; + + /* set timestamp */ + gst_rtpbuffer_set_timestamp (outbuf, + rtpmpaenc->first_ts * 90000 / GST_SECOND); + gst_rtpbuffer_set_payload_type (outbuf, GST_RTP_PAYLOAD_MPA); + gst_rtpbuffer_set_seq (outbuf, rtpmpaenc->seqnum++); + + payload = gst_rtpbuffer_get_payload (outbuf); + payload[0] = 0; + payload[1] = 0; + payload[2] = frag_offset >> 8; + payload[3] = frag_offset & 0xff; + + data = (guint8 *) gst_adapter_peek (rtpmpaenc->adapter, payload_len); + memcpy (&payload[4], data, payload_len); + gst_adapter_flush (rtpmpaenc->adapter, payload_len); + + GST_BUFFER_TIMESTAMP (outbuf) = rtpmpaenc->first_ts; + + ret = gst_pad_push (rtpmpaenc->srcpad, outbuf); + + avail -= payload_len; + frag_offset += payload_len; + } + + return ret; +} + +static GstFlowReturn +gst_rtpmpaenc_chain (GstPad * pad, GstBuffer * buffer) +{ + GstRtpMPAEnc *rtpmpaenc; + GstFlowReturn ret; + guint size, avail; + guint packet_len; + + rtpmpaenc = GST_RTP_MPA_ENC (gst_pad_get_parent (pad)); + + size = GST_BUFFER_SIZE (buffer); + avail = gst_adapter_available (rtpmpaenc->adapter); + + /* get packet length of previous data and this new data, + * payload length includes a 4 byte header */ + packet_len = gst_rtpbuffer_calc_packet_len (4 + avail + size, 0, 0); + + /* if this buffer is going to overflow the packet, flush what we + * have. */ + if (packet_len > rtpmpaenc->mtu) { + ret = gst_rtpmpaenc_flush (rtpmpaenc); + avail = 0; + } + + gst_adapter_push (rtpmpaenc->adapter, buffer); + + if (avail == 0) { + rtpmpaenc->first_ts = GST_BUFFER_TIMESTAMP (buffer); + } + gst_object_unref (rtpmpaenc); + + ret = GST_FLOW_OK; + + return ret; +} + +static void +gst_rtpmpaenc_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstRtpMPAEnc *rtpmpaenc; + + rtpmpaenc = GST_RTP_MPA_ENC (object); + + switch (prop_id) { + case PROP_MTU: + rtpmpaenc->mtu = g_value_get_uint (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_rtpmpaenc_get_property (GObject * object, guint prop_id, GValue * value, + GParamSpec * pspec) +{ + GstRtpMPAEnc *rtpmpaenc; + + rtpmpaenc = GST_RTP_MPA_ENC (object); + + switch (prop_id) { + case PROP_MTU: + g_value_set_uint (value, rtpmpaenc->mtu); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static GstElementStateReturn +gst_rtpmpaenc_change_state (GstElement * element) +{ + GstRtpMPAEnc *rtpmpaenc; + gint transition; + GstElementStateReturn ret; + + rtpmpaenc = GST_RTP_MPA_ENC (element); + transition = GST_STATE_TRANSITION (element); + + switch (transition) { + case GST_STATE_NULL_TO_READY: + break; + case GST_STATE_READY_TO_PAUSED: + rtpmpaenc->seqnum = 0; + break; + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element); + + switch (transition) { + case GST_STATE_READY_TO_NULL: + break; + default: + break; + } + return ret; +} + +gboolean +gst_rtpmpaenc_plugin_init (GstPlugin * plugin) +{ + return gst_element_register (plugin, "rtpmpaenc", + GST_RANK_NONE, GST_TYPE_RTP_MPA_ENC); +} |