diff options
author | Christian Schaller <uraeus@gnome.org> | 2003-03-02 10:16:26 +0000 |
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committer | Christian Schaller <uraeus@gnome.org> | 2003-03-02 10:16:26 +0000 |
commit | a1a3853e871cb52e95156cec216563a1741b3877 (patch) | |
tree | 4381d463f89cdf121fdb836ea7dc1ea2bf527129 /gst/rtp/gstrtpL16depay.c | |
parent | ab71414650b5bfe8af2a0274c012f0ab872032b9 (diff) |
Complete the move of the RTP plugin
Original commit message from CVS:
Complete the move of the RTP plugin
Diffstat (limited to 'gst/rtp/gstrtpL16depay.c')
-rw-r--r-- | gst/rtp/gstrtpL16depay.c | 338 |
1 files changed, 338 insertions, 0 deletions
diff --git a/gst/rtp/gstrtpL16depay.c b/gst/rtp/gstrtpL16depay.c new file mode 100644 index 00000000..6c50db8d --- /dev/null +++ b/gst/rtp/gstrtpL16depay.c @@ -0,0 +1,338 @@ +/* GStreamer + * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> + * + * 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 + */ + +#include <string.h> +#include "gstrtpL16parse.h" +#include "gstrtp-common.h" + +/* elementfactory information */ +static GstElementDetails gst_rtp_L16parse_details = { + "RTP packet parser", + "RtpL16Parse", + "GPL", + "Extracts raw audio from RTP packets", + VERSION, + "Zeeshan Ali <zak147@yahoo.com>", + "(C) 2003", +}; + +/* RtpL16Parse signals and args */ +enum +{ + /* FILL ME */ + LAST_SIGNAL +}; + +enum +{ + ARG_0, + ARG_FREQUENCY, + ARG_PAYLOAD_TYPE, +}; + +GST_PAD_TEMPLATE_FACTORY (src_factory, + "src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_CAPS_NEW ( + "audio_raw", + "audio/raw", + "format", GST_PROPS_STRING ("int"), + "law", GST_PROPS_INT (0), + "endianness", GST_PROPS_INT (G_BYTE_ORDER), + "signed", GST_PROPS_BOOLEAN (TRUE), + "width", GST_PROPS_INT (16), + "depth", GST_PROPS_INT (16), + "rate", GST_PROPS_INT_RANGE (1000, 48000), + "channels", GST_PROPS_INT_RANGE (1, 2)) +) + +GST_PAD_TEMPLATE_FACTORY (sink_factory, + "sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_CAPS_NEW ( + "rtp", + "application/x-rtp", + NULL) +); + +static void gst_rtpL16parse_class_init (GstRtpL16ParseClass * klass); +static void gst_rtpL16parse_init (GstRtpL16Parse * rtpL16parse); + +static void gst_rtpL16parse_chain (GstPad * pad, GstBuffer * buf); + +static void gst_rtpL16parse_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_rtpL16parse_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); +static GstElementStateReturn gst_rtpL16parse_change_state (GstElement * element); + +static GstElementClass *parent_class = NULL; + +static GType gst_rtpL16parse_get_type (void) +{ + static GType rtpL16parse_type = 0; + + if (!rtpL16parse_type) { + static const GTypeInfo rtpL16parse_info = { + sizeof (GstRtpL16ParseClass), + NULL, + NULL, + (GClassInitFunc) gst_rtpL16parse_class_init, + NULL, + NULL, + sizeof (GstRtpL16Parse), + 0, + (GInstanceInitFunc) gst_rtpL16parse_init, + }; + + rtpL16parse_type = g_type_register_static (GST_TYPE_ELEMENT, "GstRtpL16Parse", &rtpL16parse_info, 0); + } + return rtpL16parse_type; +} + +static void +gst_rtpL16parse_class_init (GstRtpL16ParseClass * klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + + gobject_class = (GObjectClass *) klass; + gstelement_class = (GstElementClass *) klass; + + parent_class = g_type_class_ref (GST_TYPE_ELEMENT); + + g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PAYLOAD_TYPE, + g_param_spec_int ("payload_type", "payload_type", "payload type", + G_MININT, G_MAXINT, PAYLOAD_L16_STEREO, G_PARAM_READABLE)); + g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FREQUENCY, + g_param_spec_int ("frequency", "frequency", "frequency", + G_MININT, G_MAXINT, 44100, G_PARAM_READWRITE)); + + gobject_class->set_property = gst_rtpL16parse_set_property; + gobject_class->get_property = gst_rtpL16parse_get_property; + + gstelement_class->change_state = gst_rtpL16parse_change_state; +} + +static void +gst_rtpL16parse_init (GstRtpL16Parse * rtpL16parse) +{ + rtpL16parse->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (src_factory), "src"); + rtpL16parse->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_factory), "sink"); + gst_element_add_pad (GST_ELEMENT (rtpL16parse), rtpL16parse->srcpad); + gst_element_add_pad (GST_ELEMENT (rtpL16parse), rtpL16parse->sinkpad); + gst_pad_set_chain_function (rtpL16parse->sinkpad, gst_rtpL16parse_chain); + + rtpL16parse->frequency = 44100; + rtpL16parse->channels = 2; + + rtpL16parse->payload_type = PAYLOAD_L16_STEREO; +} + +void +gst_rtpL16parse_ntohs (GstBuffer *buf) +{ + guint16 *i, *len; + + /* FIXME: is this code correct or even sane at all? */ + i = (guint16 *) GST_BUFFER_DATA(buf); + len = i + GST_BUFFER_SIZE (buf) / sizeof (guint16 *); + + for (; i<len; i++) { + *i = g_ntohs (*i); + } +} + +void +gst_rtpL16_caps_nego (GstRtpL16Parse *rtpL16parse) +{ + GstCaps *caps; + + caps = GST_CAPS_NEW ( + "audio_raw", + "audio/raw", + "format", GST_PROPS_STRING ("int"), + "law", GST_PROPS_INT (0), + "endianness", GST_PROPS_INT (G_BYTE_ORDER), + "signed", GST_PROPS_BOOLEAN (TRUE), + "width", GST_PROPS_INT (16), + "depth", GST_PROPS_INT (16), + "rate", GST_PROPS_INT (rtpL16parse->frequency), + "channels", GST_PROPS_INT (rtpL16parse->channels)); + + gst_pad_try_set_caps (rtpL16parse->srcpad, caps); +} + +void +gst_rtpL16parse_payloadtype_change (GstRtpL16Parse *rtpL16parse, rtp_payload_t pt) +{ + rtpL16parse->payload_type = pt; + + switch (pt) { + case PAYLOAD_L16_MONO: + rtpL16parse->channels = 1; + break; + case PAYLOAD_L16_STEREO: + rtpL16parse->channels = 2; + break; + default: + g_warning ("unkown payload_t %d\n", pt); + } + + gst_rtpL16_caps_nego (rtpL16parse); +} + +static void +gst_rtpL16parse_chain (GstPad * pad, GstBuffer * buf) +{ + GstRtpL16Parse *rtpL16parse; + GstBuffer *outbuf; + Rtp_Packet packet; + rtp_payload_t pt; + + g_return_if_fail (pad != NULL); + g_return_if_fail (GST_IS_PAD (pad)); + g_return_if_fail (buf != NULL); + + rtpL16parse = GST_RTP_L16_PARSE (GST_OBJECT_PARENT (pad)); + + g_return_if_fail (rtpL16parse != NULL); + g_return_if_fail (GST_IS_RTP_L16_PARSE (rtpL16parse)); + + if (GST_IS_EVENT (buf)) { + GstEvent *event = GST_EVENT (buf); + gst_pad_event_default (pad, event); + + return; + } + + if (GST_PAD_CAPS (rtpL16parse->srcpad) == NULL) { + gst_rtpL16_caps_nego (rtpL16parse); + } + + packet = rtp_packet_new_copy_data (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); + + pt = rtp_packet_get_payload_type (packet); + + if (pt != rtpL16parse->payload_type) { + gst_rtpL16parse_payloadtype_change (rtpL16parse, pt); + } + + outbuf = gst_buffer_new (); + GST_BUFFER_SIZE (outbuf) = rtp_packet_get_payload_len (packet); + GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf)); + GST_BUFFER_TIMESTAMP (outbuf) = g_ntohl (rtp_packet_get_timestamp (packet)) * GST_SECOND; + + memcpy (GST_BUFFER_DATA (outbuf), rtp_packet_get_payload (packet), GST_BUFFER_SIZE (outbuf)); + + GST_DEBUG (0,"gst_rtpL16parse_chain: pushing buffer of size %d", GST_BUFFER_SIZE(outbuf)); + + /* FIXME: According to RFC 1890, this is required, right? */ +#if G_BYTE_ORDER == G_LITTLE_ENDIAN + gst_rtpL16parse_ntohs (outbuf); +#endif + + gst_pad_push (rtpL16parse->srcpad, outbuf); + + rtp_packet_free (packet); + gst_buffer_unref (buf); +} + +static void +gst_rtpL16parse_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) +{ + GstRtpL16Parse *rtpL16parse; + + /* it's not null if we got it, but it might not be ours */ + g_return_if_fail (GST_IS_RTP_L16_PARSE (object)); + rtpL16parse = GST_RTP_L16_PARSE (object); + + switch (prop_id) { + case ARG_PAYLOAD_TYPE: + gst_rtpL16parse_payloadtype_change (rtpL16parse, g_value_get_int (value)); + break; + case ARG_FREQUENCY: + rtpL16parse->frequency = g_value_get_int (value); + break; + default: + break; + } +} + +static void +gst_rtpL16parse_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) +{ + GstRtpL16Parse *rtpL16parse; + + /* it's not null if we got it, but it might not be ours */ + g_return_if_fail (GST_IS_RTP_L16_PARSE (object)); + rtpL16parse = GST_RTP_L16_PARSE (object); + + switch (prop_id) { + case ARG_PAYLOAD_TYPE: + g_value_set_int (value, rtpL16parse->payload_type); + break; + case ARG_FREQUENCY: + g_value_set_int (value, rtpL16parse->frequency); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static GstElementStateReturn +gst_rtpL16parse_change_state (GstElement * element) +{ + GstRtpL16Parse *rtpL16parse; + + g_return_val_if_fail (GST_IS_RTP_L16_PARSE (element), GST_STATE_FAILURE); + + rtpL16parse = GST_RTP_L16_PARSE (element); + + GST_DEBUG (0, "state pending %d\n", GST_STATE_PENDING (element)); + + switch (GST_STATE_TRANSITION (element)) { + case GST_STATE_NULL_TO_READY: + break; + case GST_STATE_READY_TO_NULL: + break; + default: + break; + } + + /* if we haven't failed already, give the parent class a chance to ;-) */ + if (GST_ELEMENT_CLASS (parent_class)->change_state) + return GST_ELEMENT_CLASS (parent_class)->change_state (element); + + return GST_STATE_SUCCESS; +} + +gboolean +gst_rtpL16parse_plugin_init (GModule * module, GstPlugin * plugin) +{ + GstElementFactory *rtpL16parse; + + rtpL16parse = gst_element_factory_new ("rtpL16parse", GST_TYPE_RTP_L16_PARSE, &gst_rtp_L16parse_details); + g_return_val_if_fail (rtpL16parse != NULL, FALSE); + + gst_element_factory_add_pad_template (rtpL16parse, GST_PAD_TEMPLATE_GET (src_factory)); + gst_element_factory_add_pad_template (rtpL16parse, GST_PAD_TEMPLATE_GET (sink_factory)); + + gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (rtpL16parse)); + + return TRUE; +} |