diff options
Diffstat (limited to 'gst')
| -rw-r--r-- | gst/gdp/Makefile.am | 13 | ||||
| -rw-r--r-- | gst/gdp/gstgdp.c | 46 | ||||
| -rw-r--r-- | gst/gdp/gstgdpdepay.c | 322 | ||||
| -rw-r--r-- | gst/gdp/gstgdpdepay.h | 75 | ||||
| -rw-r--r-- | gst/gdp/gstgdppay.c | 502 | ||||
| -rw-r--r-- | gst/gdp/gstgdppay.h | 66 |
6 files changed, 1024 insertions, 0 deletions
diff --git a/gst/gdp/Makefile.am b/gst/gdp/Makefile.am new file mode 100644 index 00000000..73851200 --- /dev/null +++ b/gst/gdp/Makefile.am @@ -0,0 +1,13 @@ +plugin_LTLIBRARIES = libgstgdp.la + +libgstgdp_la_SOURCES = \ + gstgdp.c \ + gstgdppay.c \ + gstgdpdepay.c + +libgstgdp_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CFLAGS) +libgstgdp_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) $(GST_GDP_LIBS) + +noinst_HEADERS = \ + gstgdppay.h \ + gstgdpdepay.h diff --git a/gst/gdp/gstgdp.c b/gst/gdp/gstgdp.c new file mode 100644 index 00000000..31d32598 --- /dev/null +++ b/gst/gdp/gstgdp.c @@ -0,0 +1,46 @@ +/* GStreamer + * Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org> + * + * 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 <gst/dataprotocol/dataprotocol.h> + +#include "gstgdppay.h" +#include "gstgdpdepay.h" + +static gboolean +plugin_init (GstPlugin * plugin) +{ + gst_dp_init (); + + if (!gst_gdp_depay_plugin_init (plugin)) + return FALSE; + + if (!gst_gdp_pay_plugin_init (plugin)) + return FALSE; + + return TRUE; +} + +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, + "gdp", + "Payload/depayload GDP packets", plugin_init, + VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN); diff --git a/gst/gdp/gstgdpdepay.c b/gst/gdp/gstgdpdepay.c new file mode 100644 index 00000000..5a37d984 --- /dev/null +++ b/gst/gdp/gstgdpdepay.c @@ -0,0 +1,322 @@ +/* GStreamer + * Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org> + * + * 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. + */ + +/** + * SECTION:element-gdpdepay + * @see_also: videorate, ffmpegcolorspace + * + * <refsect2> + * <para> + * This element depayloads GStreamer Data Protocol buffers back to deserialized + * buffers and events. + * </para> + * </refsect2> + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <string.h> + +#include <gst/dataprotocol/dataprotocol.h> + +#include "gstgdpdepay.h" + +/* elementfactory information */ +static const GstElementDetails gdp_depay_details = +GST_ELEMENT_DETAILS ("GDP Depayloader", + "Filter/Effect/Video", + "Depayloads GStreamer Data Protocol buffers", + "Thomas Vander Stichele <thomas at apestaart dot org>"); + +enum +{ + PROP_0, + /* FILL ME */ +}; + +static GstStaticPadTemplate gdp_depay_sink_template = +GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("application/x-gdp")); + +static GstStaticPadTemplate gdp_depay_src_template = +GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + +GST_DEBUG_CATEGORY (gst_gdp_depay_debug); +#define GST_CAT_DEFAULT gst_gdp_depay_debug + +#define _do_init(x) \ + GST_DEBUG_CATEGORY_INIT (gst_gdp_depay_debug, "gdpdepay", 0, \ + "GDP depayloader"); + +GST_BOILERPLATE_FULL (GstGDPDepay, gst_gdp_depay, GstElement, + GST_TYPE_ELEMENT, _do_init); + +static GstFlowReturn gst_gdp_depay_chain (GstPad * pad, GstBuffer * buffer); +static GstStateChangeReturn gst_gdp_depay_change_state (GstElement * + element, GstStateChange transition); + +static void gst_gdp_depay_finalize (GObject * object); + +static void +gst_gdp_depay_base_init (gpointer g_class) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); + + gst_element_class_set_details (element_class, &gdp_depay_details); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gdp_depay_sink_template)); + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gdp_depay_src_template)); +} + +static void +gst_gdp_depay_class_init (GstGDPDepayClass * klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + + gobject_class = (GObjectClass *) klass; + gstelement_class = (GstElementClass *) klass; + + parent_class = g_type_class_peek_parent (klass); + + gstelement_class->change_state = + GST_DEBUG_FUNCPTR (gst_gdp_depay_change_state); + gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gdp_depay_finalize); +} + +static void +gst_gdp_depay_init (GstGDPDepay * gdpdepay, GstGDPDepayClass * g_class) +{ + gdpdepay->sinkpad = + gst_pad_new_from_static_template (&gdp_depay_sink_template, "sink"); + gst_pad_set_setcaps_function (gdpdepay->sinkpad, + GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps)); + gst_pad_set_getcaps_function (gdpdepay->sinkpad, + GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps)); + gst_pad_set_chain_function (gdpdepay->sinkpad, + GST_DEBUG_FUNCPTR (gst_gdp_depay_chain)); + gst_element_add_pad (GST_ELEMENT (gdpdepay), gdpdepay->sinkpad); + + gdpdepay->srcpad = + gst_pad_new_from_static_template (&gdp_depay_src_template, "src"); + gst_element_add_pad (GST_ELEMENT (gdpdepay), gdpdepay->srcpad); + + /* our caps will always be decided by the incoming GDP caps buffers */ + gst_pad_use_fixed_caps (gdpdepay->srcpad); + + gdpdepay->adapter = gst_adapter_new (); +} + +static void +gst_gdp_depay_finalize (GObject * gobject) +{ + GstGDPDepay *this; + + this = GST_GDP_DEPAY (gobject); + if (this->caps) + gst_caps_unref (this->caps); + if (this->header) + g_free (this->header); + gst_adapter_clear (this->adapter); + g_object_unref (this->adapter); + + GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (gobject)); +} + +static GstFlowReturn +gst_gdp_depay_chain (GstPad * pad, GstBuffer * buffer) +{ + GstGDPDepay *this; + GstFlowReturn ret = GST_FLOW_OK; + GstCaps *caps; + GstBuffer *buf; + GstEvent *event; + guint8 *header = NULL; + guint8 *payload = NULL; + guint available; + gboolean running = TRUE; + + this = GST_GDP_DEPAY (gst_pad_get_parent (pad)); + + gst_adapter_push (this->adapter, buffer); + + while (running) { + switch (this->state) { + case GST_GDP_DEPAY_STATE_HEADER: + available = gst_adapter_available (this->adapter); + if (available < GST_DP_HEADER_LENGTH) { + running = FALSE; + break; + } + + if (this->header) + g_free (this->header); + GST_LOG_OBJECT (this, "reading GDP header from adapter"); + header = gst_adapter_take (this->adapter, GST_DP_HEADER_LENGTH); + if (!gst_dp_validate_header (GST_DP_HEADER_LENGTH, header)) + goto header_validate_error; + + this->payload_length = gst_dp_header_payload_length (header); + this->payload_type = gst_dp_header_payload_type (header); + this->header = header; + GST_LOG_OBJECT (this, + "read GDP header, payload size %d, switching to state PAYLOAD", + this->payload_length); + this->state = GST_GDP_DEPAY_STATE_PAYLOAD; + break; + + case GST_GDP_DEPAY_STATE_PAYLOAD: + available = gst_adapter_available (this->adapter); + if (available < this->payload_length) { + running = FALSE; + break; + } + + /* change state based on type */ + if (this->payload_type == GST_DP_PAYLOAD_BUFFER) { + GST_LOG_OBJECT (this, "switching to state BUFFER"); + this->state = GST_GDP_DEPAY_STATE_BUFFER; + } else if (this->payload_type == GST_DP_PAYLOAD_CAPS) { + GST_LOG_OBJECT (this, "switching to state CAPS"); + this->state = GST_GDP_DEPAY_STATE_CAPS; + } else if (this->payload_type >= GST_DP_PAYLOAD_EVENT_NONE) { + GST_LOG_OBJECT (this, "switching to state EVENT"); + this->state = GST_GDP_DEPAY_STATE_EVENT; + } else + goto wrong_type; + break; + + case GST_GDP_DEPAY_STATE_BUFFER: + if (!this->caps) { + GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), + ("Received a buffer without first receiving caps")); + ret = GST_FLOW_NOT_NEGOTIATED; + goto done; + } + + GST_LOG_OBJECT (this, "reading GDP buffer from adapter"); + buf = gst_dp_buffer_from_header (GST_DP_HEADER_LENGTH, this->header); + payload = gst_adapter_take (this->adapter, this->payload_length); + memcpy (GST_BUFFER_DATA (buf), payload, this->payload_length); + g_free (payload); + + gst_buffer_set_caps (buf, this->caps); + ret = gst_pad_push (this->srcpad, buf); + if (ret != GST_FLOW_OK) { + GST_WARNING_OBJECT (this, "pushing depayloaded buffer returned %d", + ret); + goto done; + } + + GST_LOG_OBJECT (this, "switching to state HEADER"); + this->state = GST_GDP_DEPAY_STATE_HEADER; + break; + + case GST_GDP_DEPAY_STATE_CAPS: + GST_LOG_OBJECT (this, "reading GDP caps from adapter"); + payload = gst_adapter_take (this->adapter, this->payload_length); + caps = gst_dp_caps_from_packet (GST_DP_HEADER_LENGTH, this->header, + payload); + g_free (payload); + GST_DEBUG_OBJECT (this, "read caps %" GST_PTR_FORMAT, caps); + gst_caps_replace (&(this->caps), caps); + gst_pad_set_caps (this->srcpad, caps); + /* drop the creation ref we still have */ + gst_caps_unref (caps); + + GST_LOG_OBJECT (this, "switching to state HEADER"); + this->state = GST_GDP_DEPAY_STATE_HEADER; + break; + + case GST_GDP_DEPAY_STATE_EVENT: + GST_LOG_OBJECT (this, "reading GDP event from adapter"); + /* adapter doesn't like 0 length payload */ + if (this->payload_length > 0) + payload = gst_adapter_take (this->adapter, this->payload_length); + event = gst_dp_event_from_packet (GST_DP_HEADER_LENGTH, this->header, + payload); + /* FIXME: set me as source ? */ + gst_pad_push_event (this->srcpad, event); + + GST_LOG_OBJECT (this, "switching to state HEADER"); + this->state = GST_GDP_DEPAY_STATE_HEADER; + break; + } + } + goto done; + +header_validate_error: + GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), + ("GDP packet header does not validate")); + g_free (header); + ret = GST_FLOW_ERROR; + goto done; + +wrong_type: + GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), + ("GDP packet header is of wrong type")); + g_free (header); + ret = GST_FLOW_ERROR; + goto done; + +done: + gst_object_unref (this); + return ret; +} + +static GstStateChangeReturn +gst_gdp_depay_change_state (GstElement * element, GstStateChange transition) +{ + GstStateChangeReturn ret; + GstGDPDepay *this = GST_GDP_DEPAY (element); + + switch (transition) { + case GST_STATE_CHANGE_READY_TO_NULL: + if (this->caps) { + gst_caps_unref (this->caps); + this->caps = NULL; + } + break; + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); + + return ret; +} + +gboolean +gst_gdp_depay_plugin_init (GstPlugin * plugin) +{ + if (!gst_element_register (plugin, "gdpdepay", GST_RANK_NONE, + GST_TYPE_GDP_DEPAY)) + return FALSE; + + return TRUE; +} diff --git a/gst/gdp/gstgdpdepay.h b/gst/gdp/gstgdpdepay.h new file mode 100644 index 00000000..d39ec5a5 --- /dev/null +++ b/gst/gdp/gstgdpdepay.h @@ -0,0 +1,75 @@ +/* Gnome-Streamer + * 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 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 __GST_GDP_DEPAY_H__ +#define __GST_GDP_DEPAY_H__ + +#include <gst/gst.h> +#include <gst/base/gstadapter.h> + +G_BEGIN_DECLS + +#define GST_TYPE_GDP_DEPAY \ + (gst_gdp_depay_get_type()) +#define GST_GDP_DEPAY(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GDP_DEPAY,GstGDPDepay)) +#define GST_GDP_DEPAY_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GDP_DEPAY,GstGDPDepay)) +#define GST_IS_GDP_DEPAY(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GDP_DEPAY)) +#define GST_IS_GDP_DEPAY_CLASS(obj) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GDP_DEPAY)) + +typedef enum { + GST_GDP_DEPAY_STATE_HEADER = 0, + GST_GDP_DEPAY_STATE_PAYLOAD, + GST_GDP_DEPAY_STATE_BUFFER, + GST_GDP_DEPAY_STATE_CAPS, + GST_GDP_DEPAY_STATE_EVENT, +} GstGDPDepayState; + + +typedef struct _GstGDPDepay GstGDPDepay; +typedef struct _GstGDPDepayClass GstGDPDepayClass; + +struct _GstGDPDepay +{ + GstElement element; + GstPad *sinkpad; + GstPad *srcpad; + + GstAdapter *adapter; + GstGDPDepayState state; + GstCaps *caps; + + guint8 *header; + guint32 payload_length; + GstDPPayloadType payload_type; +}; + +struct _GstGDPDepayClass +{ + GstElementClass parent_class; +}; + +gboolean gst_gdp_depay_plugin_init (GstPlugin * plugin); + +G_END_DECLS + +#endif /* __GST_GDP_DEPAY_H__ */ diff --git a/gst/gdp/gstgdppay.c b/gst/gdp/gstgdppay.c new file mode 100644 index 00000000..e40d2f1b --- /dev/null +++ b/gst/gdp/gstgdppay.c @@ -0,0 +1,502 @@ +/* GStreamer + * Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org> + * + * 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. + */ + +/** + * SECTION:element-gdppay + * + * <refsect2> + * <para> + * This element payloads GStreamer buffers and events using the + * GStreamer Data Protocol. + * </para> + * </refsect2> + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <gst/dataprotocol/dataprotocol.h> + +#include "gstgdppay.h" + +/* elementfactory information */ +static const GstElementDetails gdp_pay_details = +GST_ELEMENT_DETAILS ("GDP Payloader", + "Filter/Effect/Video", + "Payloads GStreamer Data Protocol buffers", + "Thomas Vander Stichele <thomas at apestaart dot org>"); + +enum +{ + PROP_0, + /* FILL ME */ +}; + +static GstStaticPadTemplate gdp_pay_sink_template = +GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + +static GstStaticPadTemplate gdp_pay_src_template = +GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("application/x-gdp")); + +GST_DEBUG_CATEGORY (gst_gdp_pay_debug); +#define GST_CAT_DEFAULT gst_gdp_pay_debug + +#define _do_init(x) \ + GST_DEBUG_CATEGORY_INIT (gst_gdp_pay_debug, "gdppay", 0, \ + "GDP payloader"); + +GST_BOILERPLATE_FULL (GstGDPPay, gst_gdp_pay, GstElement, + GST_TYPE_ELEMENT, _do_init); + +static GstFlowReturn gst_gdp_pay_chain (GstPad * pad, GstBuffer * buffer); +static gboolean gst_gdp_pay_sink_event (GstPad * pad, GstEvent * event); +static GstStateChangeReturn gst_gdp_pay_change_state (GstElement * + element, GstStateChange transition); + +static void gst_gdp_pay_dispose (GObject * gobject); + +static void +gst_gdp_pay_base_init (gpointer g_class) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); + + gst_element_class_set_details (element_class, &gdp_pay_details); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gdp_pay_sink_template)); + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gdp_pay_src_template)); +} + +static void +gst_gdp_pay_class_init (GstGDPPayClass * klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + + gobject_class = (GObjectClass *) klass; + gstelement_class = (GstElementClass *) klass; + + parent_class = g_type_class_peek_parent (klass); + + gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_gdp_pay_dispose); + gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_gdp_pay_change_state); +} + +static void +gst_gdp_pay_init (GstGDPPay * gdppay, GstGDPPayClass * g_class) +{ + gdppay->sinkpad = + gst_pad_new_from_static_template (&gdp_pay_sink_template, "sink"); + gst_pad_set_chain_function (gdppay->sinkpad, + GST_DEBUG_FUNCPTR (gst_gdp_pay_chain)); + gst_pad_set_event_function (gdppay->sinkpad, + GST_DEBUG_FUNCPTR (gst_gdp_pay_sink_event)); + gst_element_add_pad (GST_ELEMENT (gdppay), gdppay->sinkpad); + + gdppay->srcpad = + gst_pad_new_from_static_template (&gdp_pay_src_template, "src"); + gst_element_add_pad (GST_ELEMENT (gdppay), gdppay->srcpad); + + gdppay->offset = 0; +} + +static void +gst_gdp_pay_dispose (GObject * gobject) +{ + GstGDPPay *this = GST_GDP_PAY (gobject); + + if (this->caps_buf) { + gst_buffer_unref (this->caps_buf); + this->caps_buf = NULL; + } + if (this->new_segment_buf) { + gst_buffer_unref (this->new_segment_buf); + this->new_segment_buf = NULL; + } + GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (gobject)); +} + +/* set OFFSET and OFFSET_END with running count */ +static void +gst_gdp_stamp_buffer (GstGDPPay * this, GstBuffer * buffer) +{ + GST_BUFFER_OFFSET (buffer) = this->offset; + GST_BUFFER_OFFSET_END (buffer) = this->offset + GST_BUFFER_SIZE (buffer); + this->offset = GST_BUFFER_OFFSET_END (buffer); +} + +static GstBuffer * +gst_gdp_buffer_from_caps (GstGDPPay * this, GstCaps * caps) +{ + GstBuffer *headerbuf; + GstBuffer *payloadbuf; + guint8 *header, *payload; + guint len; + + if (!gst_dp_packet_from_caps (caps, 0, &len, &header, &payload)) { + GST_WARNING_OBJECT (this, "could not create GDP header from caps"); + return NULL; + } + + GST_LOG_OBJECT (this, "creating GDP header and payload buffer from caps"); + headerbuf = gst_buffer_new (); + gst_buffer_set_data (headerbuf, header, len); + GST_BUFFER_MALLOCDATA (headerbuf) = header; + + payloadbuf = gst_buffer_new (); + gst_buffer_set_data (payloadbuf, payload, + gst_dp_header_payload_length (header)); + GST_BUFFER_MALLOCDATA (payloadbuf) = payload; + + return gst_buffer_join (headerbuf, payloadbuf); +} + +static GstBuffer * +gst_gdp_pay_buffer_from_buffer (GstGDPPay * this, GstBuffer * buffer) +{ + GstBuffer *headerbuf; + guint8 *header; + guint len; + + if (!gst_dp_header_from_buffer (buffer, 0, &len, &header)) { + GST_WARNING_OBJECT (this, "could not create GDP header from buffer"); + return NULL; + } + + GST_LOG_OBJECT (this, "creating GDP header and payload buffer from buffer"); + headerbuf = gst_buffer_new (); + gst_buffer_set_data (headerbuf, header, len); + GST_BUFFER_MALLOCDATA (headerbuf) = header; + + /* we do not want to lose the ref on the incoming buffer */ + gst_buffer_ref (buffer); + return gst_buffer_join (headerbuf, buffer); +} + +static GstBuffer * +gst_gdp_buffer_from_event (GstGDPPay * this, GstEvent * event) +{ + GstBuffer *headerbuf; + GstBuffer *payloadbuf; + guint8 *header, *payload; + guint len; + + if (!gst_dp_packet_from_event (event, 0, &len, &header, &payload)) { + GST_WARNING_OBJECT (this, "could not create GDP header from event"); + return NULL; + } + + GST_LOG_OBJECT (this, "creating GDP header and payload buffer from event"); + headerbuf = gst_buffer_new (); + gst_buffer_set_data (headerbuf, header, len); + GST_BUFFER_MALLOCDATA (headerbuf) = header; + + payloadbuf = gst_buffer_new (); + gst_buffer_set_data (payloadbuf, payload, + gst_dp_header_payload_length (header)); + GST_BUFFER_MALLOCDATA (payloadbuf) = payload; + + return gst_buffer_join (headerbuf, payloadbuf); +} + + +/* set our caps with streamheader, based on the latest newsegment and caps, + * and (possibly) GDP-serialized buffers of the streamheaders on the src pad */ +static GstFlowReturn +gst_gdp_pay_reset_streamheader (GstGDPPay * this) +{ + GstCaps *caps; + GstStructure *structure; + GstBuffer *new_segment_buf, *caps_buf; + GstFlowReturn r = GST_FLOW_OK; + + GValue array = { 0 }; + GValue value = { 0 }; + + /* we need both new segment and caps before we can set streamheader */ + if (!this->new_segment_buf || !this->caps_buf) + return GST_FLOW_OK; + + /* we copy to avoid circular refcounts */ + new_segment_buf = gst_buffer_copy (this->new_segment_buf); + caps_buf = gst_buffer_copy (this->caps_buf); + + /* put copies of the buffers in a fixed list */ + g_value_init (&array, GST_TYPE_ARRAY); + + g_value_init (&value, GST_TYPE_BUFFER); + gst_value_set_buffer (&value, new_segment_buf); + gst_value_array_append_value (&array, &value); + g_value_unset (&value); + + g_value_init (&value, GST_TYPE_BUFFER); + gst_value_set_buffer (&value, caps_buf); + gst_value_array_append_value (&array, &value); + g_value_unset (&value); + + /* we also need to add GDP serializations of the streamheaders of the + * incoming caps */ + /* FIXME: HEREIAM */ + + structure = gst_caps_get_structure (this->caps, 0); + if (gst_structure_has_field (structure, "streamheader")) { + const GValue *sh; + GArray *buffers; + GstBuffer *buffer; + int i; + + sh = gst_structure_get_value (structure, "streamheader"); + buffers = g_value_peek_pointer (sh); + GST_DEBUG_OBJECT (this, + "Need to serialize %d incoming streamheader buffers on our streamheader", + buffers->len); + for (i = 0; i < buffers->len; ++i) { + GValue *bufval; + GstBuffer *outbuffer; + + bufval = &g_array_index (buffers, GValue, i); + buffer = g_value_peek_pointer (bufval); + outbuffer = gst_gdp_pay_buffer_from_buffer (this, buffer); + g_value_init (&value, GST_TYPE_BUFFER); + gst_value_set_buffer (&value, outbuffer); + gst_value_array_append_value (&array, &value); + g_value_unset (&value); + } + } + + caps = gst_caps_from_string ("application/x-gdp"); + structure = gst_caps_get_structure (caps, 0); + + gst_structure_set_value (structure, "streamheader", &array); + g_value_unset (&array); + + /* Unref our copies */ + gst_buffer_unref (new_segment_buf); + gst_buffer_unref (caps_buf); + + GST_DEBUG_OBJECT (this, "Setting caps on src pad %" GST_PTR_FORMAT, caps); + gst_pad_set_caps (this->srcpad, caps); + gst_buffer_set_caps (this->caps_buf, caps); + gst_buffer_set_caps (this->new_segment_buf, caps); + + /* if these are our first ever buffers, send out new_segment first */ + if (!this->sent_streamheader) { + GstEvent *event = + gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_BYTES, 0, -1, 0); + GST_DEBUG_OBJECT (this, "Sending out new_segment event %p", event); + if (!gst_pad_push_event (this->srcpad, event)) { + GST_WARNING_OBJECT (this, "pushing new segment failed"); + return GST_FLOW_ERROR; + } + } + + /* push out these streamheader buffers, then flush our internal queue */ + GST_DEBUG_OBJECT (this, "Pushing GDP new_segment buffer %p", + this->new_segment_buf); + /* we stored these bufs with refcount 1, so make sure we keep a ref */ + r = gst_pad_push (this->srcpad, gst_buffer_ref (this->new_segment_buf)); + if (r != GST_FLOW_OK) { + GST_WARNING_OBJECT (this, "pushing GDP newsegment buffer returned %d", r); + return r; + } + GST_DEBUG_OBJECT (this, "Pushing GDP caps buffer %p", this->new_segment_buf); + r = gst_pad_push (this->srcpad, gst_buffer_ref (this->caps_buf)); + if (r != GST_FLOW_OK) { + GST_WARNING_OBJECT (this, "pushing GDP caps buffer returned %d", r); + return r; + } + this->sent_streamheader = TRUE; + GST_DEBUG_OBJECT (this, "need to push %d queued buffers", + g_list_length (this->queue)); + if (this->queue) { + GList *l; + + for (l = this->queue; l; l = g_list_next (l)) { + GST_DEBUG_OBJECT (this, "Pushing queued GDP buffer %p", l->data); + gst_buffer_set_caps (l->data, caps); + r = gst_pad_push (this->srcpad, l->data); + if (r != GST_FLOW_OK) { + GST_WARNING_OBJECT (this, "pushing queued GDP buffer returned %d", r); + return r; + } + } + } + + return r; +} + +/* queue a buffer internally if we haven't sent streamheader buffers yet; + * otherwise, just push on */ +static GstFlowReturn +gst_gdp_queue_buffer (GstGDPPay * this, GstBuffer * buffer) +{ + if (this->sent_streamheader) { + GST_LOG_OBJECT (this, "Pushing GDP buffer %p", buffer); + GST_LOG_OBJECT (this, "set caps %" GST_PTR_FORMAT, this->caps); + return gst_pad_push (this->srcpad, buffer); + } + + /* store it on an internal queue */ + this->queue = g_list_append (this->queue, buffer); + GST_DEBUG_OBJECT (this, "queued buffer %p, now %d buffers queued", + buffer, g_list_length (this->queue)); + return GST_FLOW_OK; +} + +static GstFlowReturn +gst_gdp_pay_chain (GstPad * pad, GstBuffer * buffer) +{ + GstGDPPay *this; + GstCaps *caps; + GstBuffer *outbuffer; + + this = GST_GDP_PAY (gst_pad_get_parent (pad)); + + caps = gst_buffer_get_caps (buffer); + + /* we should have received a new_segment before, otherwise it's a bug. + * fake one in that case */ + if (!this->new_segment_buf) { + GstEvent *event; + + GST_WARNING_OBJECT (this, + "did not receive new-segment before first buffer"); + event = gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_BYTES, 0, -1, 0); + outbuffer = gst_gdp_buffer_from_event (this, event); + gst_gdp_stamp_buffer (this, outbuffer); + GST_BUFFER_TIMESTAMP (outbuffer) = GST_BUFFER_TIMESTAMP (buffer); + GST_BUFFER_DURATION (outbuffer) = 0; + this->new_segment_buf = outbuffer; + gst_event_unref (event); + } + + /* make sure we've received caps before */ + if (!this->caps && !caps) { + GST_WARNING_OBJECT (this, "first received buffer does not have caps set"); + gst_buffer_unref (buffer); + gst_object_unref (this); + return GST_FLOW_NOT_NEGOTIATED; + } + /* if the caps have changed, process caps first */ + if (caps && !gst_caps_is_equal (this->caps, caps)) { + GST_LOG_OBJECT (this, "caps changed to %p, %" GST_PTR_FORMAT, caps, caps); + gst_caps_replace (&(this->caps), caps); + outbuffer = gst_gdp_buffer_from_caps (this, caps); + gst_gdp_stamp_buffer (this, outbuffer); + GST_BUFFER_TIMESTAMP (outbuffer) = GST_BUFFER_TIMESTAMP (buffer); + GST_BUFFER_DURATION (outbuffer) = 0; + GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_IN_CAPS); + this->caps_buf = outbuffer; + gst_gdp_pay_reset_streamheader (this); + } + + /* create a GDP header packet, + * then create a GST buffer of the header packet and the buffer contents */ + outbuffer = gst_gdp_pay_buffer_from_buffer (this, buffer); + gst_gdp_stamp_buffer (this, outbuffer); + GST_BUFFER_TIMESTAMP (outbuffer) = GST_BUFFER_TIMESTAMP (buffer); + GST_BUFFER_DURATION (outbuffer) = GST_BUFFER_DURATION (buffer); + gst_buffer_unref (buffer); + + gst_object_unref (this); + return gst_gdp_queue_buffer (this, outbuffer); +} + +static gboolean +gst_gdp_pay_sink_event (GstPad * pad, GstEvent * event) +{ + GstBuffer *outbuffer; + GstGDPPay *this = GST_GDP_PAY (gst_pad_get_parent (pad)); + GstFlowReturn flowret; + gboolean ret = TRUE; + + /* now turn the event into a buffer */ + outbuffer = gst_gdp_buffer_from_event (this, event); + gst_gdp_stamp_buffer (this, outbuffer); + GST_BUFFER_TIMESTAMP (outbuffer) = GST_EVENT_TIMESTAMP (event); + GST_BUFFER_DURATION (outbuffer) = 0; + + /* if we got a new segment, we should put it on our streamheader, + * and not send it on */ + if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) { + if (this->new_segment_buf) { + gst_buffer_unref (this->new_segment_buf); + } + this->new_segment_buf = outbuffer; + gst_gdp_pay_reset_streamheader (this); + } else { + flowret = gst_gdp_queue_buffer (this, outbuffer); + if (flowret != GST_FLOW_OK) { + GST_WARNING_OBJECT (this, "queueing GDP caps buffer returned %d", + flowret); + ret = FALSE; + goto done; + } + } + + /* if we have EOS, we should send on EOS ourselves */ + if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) { + GST_DEBUG_OBJECT (this, "Sending on EOS event %p", event); + return gst_pad_push_event (this->srcpad, event); + }; + +done: + gst_object_unref (this); + gst_event_unref (event); + return ret; +} + +static GstStateChangeReturn +gst_gdp_pay_change_state (GstElement * element, GstStateChange transition) +{ + GstStateChangeReturn ret; + GstGDPPay *this = GST_GDP_PAY (element); + + switch (transition) { + case GST_STATE_CHANGE_READY_TO_NULL: + if (this->caps) { + gst_caps_unref (this->caps); + this->caps = NULL; + } + break; + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); + + return ret; +} + +gboolean +gst_gdp_pay_plugin_init (GstPlugin * plugin) +{ + if (!gst_element_register (plugin, "gdppay", GST_RANK_NONE, GST_TYPE_GDP_PAY)) + return FALSE; + + return TRUE; +} diff --git a/gst/gdp/gstgdppay.h b/gst/gdp/gstgdppay.h new file mode 100644 index 00000000..255d6c77 --- /dev/null +++ b/gst/gdp/gstgdppay.h @@ -0,0 +1,66 @@ +/* Gnome-Streamer + * 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 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 __GST_GDP_PAY_H__ +#define __GST_GDP_PAY_H__ + +#include <gst/gst.h> + +G_BEGIN_DECLS + +#define GST_TYPE_GDP_PAY \ + (gst_gdp_pay_get_type()) +#define GST_GDP_PAY(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GDP_PAY,GstGDPPay)) +#define GST_GDP_PAY_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GDP_PAY,GstGDPPay)) +#define GST_IS_GDP_PAY(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GDP_PAY)) +#define GST_IS_GDP_PAY_CLASS(obj) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GDP_PAY)) + +typedef struct _GstGDPPay GstGDPPay; +typedef struct _GstGDPPayClass GstGDPPayClass; + +struct _GstGDPPay +{ + GstElement element; + GstPad *sinkpad; + GstPad *srcpad; + + GstCaps *caps; /* incoming caps */ + + GstBuffer *caps_buf; + GstBuffer *new_segment_buf; + + gboolean sent_streamheader; /* TRUE after the first streamheaders are sent */ + GList *queue; /* list of queued buffers before streamheaders are sent */ + guint64 offset; +}; + +struct _GstGDPPayClass +{ + GstElementClass parent_class; +}; + +gboolean gst_gdp_pay_plugin_init (GstPlugin * plugin); + +G_END_DECLS + +#endif /* __GST_GDP_PAY_H__ */ |