gstreamer/ext/rtmp/gstrtmpsink.c
2021-03-23 14:19:17 +00:00

493 lines
13 KiB
C

/*
* GStreamer
* Copyright (C) 2010 Jan Schmidt <thaytan@noraisin.net>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-rtmpsink
* @title: rtmpsink
*
* This element delivers data to a streaming server via RTMP. It uses
* librtmp, and supports any protocols/urls that librtmp supports.
* The URL/location can contain extra connection or session parameters
* for librtmp, such as 'flashver=version'. See the librtmp documentation
* for more detail
*
* ## Example launch line
* |[
* gst-launch-1.0 -v videotestsrc ! ffenc_flv ! flvmux ! rtmpsink location='rtmp://localhost/path/to/stream live=1'
* ]| Encode a test video stream to FLV video format and stream it via RTMP.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "gstrtmpelements.h"
#include "gstrtmpsink.h"
#ifdef G_OS_WIN32
#include <winsock2.h>
#endif
#include <stdlib.h>
GST_DEBUG_CATEGORY_STATIC (gst_rtmp_sink_debug);
#define GST_CAT_DEFAULT gst_rtmp_sink_debug
#define DEFAULT_LOCATION NULL
enum
{
PROP_0,
PROP_LOCATION
};
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-flv")
);
static void gst_rtmp_sink_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static void gst_rtmp_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_rtmp_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_rtmp_sink_finalize (GObject * object);
static gboolean gst_rtmp_sink_stop (GstBaseSink * sink);
static gboolean gst_rtmp_sink_start (GstBaseSink * sink);
static gboolean gst_rtmp_sink_event (GstBaseSink * sink, GstEvent * event);
static gboolean gst_rtmp_sink_setcaps (GstBaseSink * sink, GstCaps * caps);
static GstFlowReturn gst_rtmp_sink_render (GstBaseSink * sink, GstBuffer * buf);
#define gst_rtmp_sink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstRTMPSink, gst_rtmp_sink, GST_TYPE_BASE_SINK,
G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER,
gst_rtmp_sink_uri_handler_init));
GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (rtmpsink, "rtmpsink", GST_RANK_PRIMARY,
GST_TYPE_RTMP_SINK, rtmp_element_init (plugin));
/* initialize the plugin's class */
static void
gst_rtmp_sink_class_init (GstRTMPSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSinkClass *gstbasesink_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesink_class = (GstBaseSinkClass *) klass;
gobject_class->finalize = gst_rtmp_sink_finalize;
gobject_class->set_property = gst_rtmp_sink_set_property;
gobject_class->get_property = gst_rtmp_sink_get_property;
g_object_class_install_property (gobject_class, PROP_LOCATION,
g_param_spec_string ("location", "RTMP Location", "RTMP url",
DEFAULT_LOCATION, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (gstelement_class,
"RTMP output sink",
"Sink/Network", "Sends FLV content to a server via RTMP",
"Jan Schmidt <thaytan@noraisin.net>");
gst_element_class_add_static_pad_template (gstelement_class, &sink_template);
gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_rtmp_sink_start);
gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_rtmp_sink_stop);
gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_rtmp_sink_render);
gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_rtmp_sink_setcaps);
gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_rtmp_sink_event);
GST_DEBUG_CATEGORY_INIT (gst_rtmp_sink_debug, "rtmpsink", 0,
"RTMP server element");
}
/* initialize the new element
* initialize instance structure
*/
static void
gst_rtmp_sink_init (GstRTMPSink * sink)
{
#ifdef G_OS_WIN32
WSADATA wsa_data;
if (WSAStartup (MAKEWORD (2, 2), &wsa_data) != 0) {
GST_ERROR_OBJECT (sink, "WSAStartup failed: 0x%08x", WSAGetLastError ());
}
#endif
}
static void
gst_rtmp_sink_finalize (GObject * object)
{
GstRTMPSink *sink = GST_RTMP_SINK (object);
#ifdef G_OS_WIN32
WSACleanup ();
#endif
g_free (sink->uri);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_rtmp_sink_start (GstBaseSink * basesink)
{
GstRTMPSink *sink = GST_RTMP_SINK (basesink);
if (!sink->uri) {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
("Please set URI for RTMP output"), ("No URI set before starting"));
return FALSE;
}
sink->rtmp_uri = g_strdup (sink->uri);
sink->rtmp = RTMP_Alloc ();
if (!sink->rtmp) {
GST_ERROR_OBJECT (sink, "Could not allocate librtmp's RTMP context");
goto error;
}
RTMP_Init (sink->rtmp);
if (!RTMP_SetupURL (sink->rtmp, sink->rtmp_uri)) {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
("Failed to setup URL '%s'", sink->uri));
goto error;
}
GST_DEBUG_OBJECT (sink, "Created RTMP object");
/* Mark this as an output connection */
RTMP_EnableWrite (sink->rtmp);
sink->first = TRUE;
sink->have_write_error = FALSE;
return TRUE;
error:
if (sink->rtmp) {
RTMP_Free (sink->rtmp);
sink->rtmp = NULL;
}
g_free (sink->rtmp_uri);
sink->rtmp_uri = NULL;
return FALSE;
}
static gboolean
gst_rtmp_sink_stop (GstBaseSink * basesink)
{
GstRTMPSink *sink = GST_RTMP_SINK (basesink);
if (sink->header) {
gst_buffer_unref (sink->header);
sink->header = NULL;
}
if (sink->rtmp) {
RTMP_Close (sink->rtmp);
RTMP_Free (sink->rtmp);
sink->rtmp = NULL;
}
if (sink->rtmp_uri) {
g_free (sink->rtmp_uri);
sink->rtmp_uri = NULL;
}
return TRUE;
}
static GstFlowReturn
gst_rtmp_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstRTMPSink *sink = GST_RTMP_SINK (bsink);
gboolean need_unref = FALSE;
GstMapInfo map = GST_MAP_INFO_INIT;
if (sink->rtmp == NULL) {
/* Do not crash */
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL), ("Failed to write data"));
return GST_FLOW_ERROR;
}
/* Ignore buffers that are in the stream headers (caps) */
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_HEADER)) {
return GST_FLOW_OK;
}
if (sink->first) {
/* open the connection */
if (!RTMP_IsConnected (sink->rtmp)) {
if (!RTMP_Connect (sink->rtmp, NULL))
goto connection_failed;
if (!RTMP_ConnectStream (sink->rtmp, 0)) {
RTMP_Close (sink->rtmp);
goto connection_failed;
}
GST_DEBUG_OBJECT (sink, "Opened connection to %s", sink->rtmp_uri);
}
/* Prepend the header from the caps to the first non header buffer */
if (sink->header) {
buf = gst_buffer_append (gst_buffer_ref (sink->header),
gst_buffer_ref (buf));
need_unref = TRUE;
}
sink->first = FALSE;
}
if (sink->have_write_error)
goto write_failed;
GST_LOG_OBJECT (sink, "Sending %" G_GSIZE_FORMAT " bytes to RTMP server",
gst_buffer_get_size (buf));
gst_buffer_map (buf, &map, GST_MAP_READ);
if (RTMP_Write (sink->rtmp, (char *) map.data, map.size) <= 0)
goto write_failed;
gst_buffer_unmap (buf, &map);
if (need_unref)
gst_buffer_unref (buf);
return GST_FLOW_OK;
/* ERRORS */
write_failed:
{
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL), ("Failed to write data"));
gst_buffer_unmap (buf, &map);
if (need_unref)
gst_buffer_unref (buf);
sink->have_write_error = TRUE;
return GST_FLOW_ERROR;
}
connection_failed:
{
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
("Could not connect to RTMP stream \"%s\" for writing", sink->uri));
RTMP_Free (sink->rtmp);
sink->rtmp = NULL;
g_free (sink->rtmp_uri);
sink->rtmp_uri = NULL;
sink->have_write_error = TRUE;
return GST_FLOW_ERROR;
}
}
/*
* URI interface support.
*/
static GstURIType
gst_rtmp_sink_uri_get_type (GType type)
{
return GST_URI_SINK;
}
static const gchar *const *
gst_rtmp_sink_uri_get_protocols (GType type)
{
static const gchar *protocols[] =
{ "rtmp", "rtmpt", "rtmps", "rtmpe", "rtmfp", "rtmpte", "rtmpts", NULL };
return protocols;
}
static gchar *
gst_rtmp_sink_uri_get_uri (GstURIHandler * handler)
{
GstRTMPSink *sink = GST_RTMP_SINK (handler);
/* FIXME: make thread-safe */
return g_strdup (sink->uri);
}
static gboolean
gst_rtmp_sink_uri_set_uri (GstURIHandler * handler, const gchar * uri,
GError ** error)
{
GstRTMPSink *sink = GST_RTMP_SINK (handler);
gboolean ret = TRUE;
if (GST_STATE (sink) >= GST_STATE_PAUSED) {
g_set_error (error, GST_URI_ERROR, GST_URI_ERROR_BAD_STATE,
"Changing the URI on rtmpsink when it is running is not supported");
return FALSE;
}
g_free (sink->uri);
sink->uri = NULL;
if (uri != NULL) {
int protocol;
AVal host;
unsigned int port;
AVal playpath, app;
if (!RTMP_ParseURL (uri, &protocol, &host, &port, &playpath, &app) ||
!host.av_len) {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
("Failed to parse URI %s", uri), (NULL));
g_set_error (error, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
"Could not parse RTMP URI");
ret = FALSE;
} else {
sink->uri = g_strdup (uri);
}
if (playpath.av_val)
free (playpath.av_val);
}
if (ret) {
sink->have_write_error = FALSE;
GST_DEBUG_OBJECT (sink, "Changed URI to %s", GST_STR_NULL (uri));
}
return ret;
}
static void
gst_rtmp_sink_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_rtmp_sink_uri_get_type;
iface->get_protocols = gst_rtmp_sink_uri_get_protocols;
iface->get_uri = gst_rtmp_sink_uri_get_uri;
iface->set_uri = gst_rtmp_sink_uri_set_uri;
}
static void
gst_rtmp_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstRTMPSink *sink = GST_RTMP_SINK (object);
switch (prop_id) {
case PROP_LOCATION:
gst_rtmp_sink_uri_set_uri (GST_URI_HANDLER (sink),
g_value_get_string (value), NULL);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_rtmp_sink_setcaps (GstBaseSink * sink, GstCaps * caps)
{
GstRTMPSink *rtmpsink = GST_RTMP_SINK (sink);
GstStructure *s;
const GValue *sh;
GST_DEBUG_OBJECT (sink, "caps set to %" GST_PTR_FORMAT, caps);
/* Clear our current header buffer */
if (rtmpsink->header) {
gst_buffer_unref (rtmpsink->header);
rtmpsink->header = NULL;
}
s = gst_caps_get_structure (caps, 0);
sh = gst_structure_get_value (s, "streamheader");
if (sh == NULL)
goto out;
if (GST_VALUE_HOLDS_BUFFER (sh)) {
rtmpsink->header = gst_buffer_ref (gst_value_get_buffer (sh));
} else if (GST_VALUE_HOLDS_ARRAY (sh)) {
GArray *buffers;
gint i;
buffers = g_value_peek_pointer (sh);
/* Concatenate all buffers in streamheader into one */
rtmpsink->header = gst_buffer_new ();
for (i = 0; i < buffers->len; ++i) {
GValue *val;
GstBuffer *buf;
val = &g_array_index (buffers, GValue, i);
buf = g_value_peek_pointer (val);
gst_buffer_ref (buf);
rtmpsink->header = gst_buffer_append (rtmpsink->header, buf);
}
} else {
GST_ERROR_OBJECT (rtmpsink, "streamheader field has unexpected type %s",
G_VALUE_TYPE_NAME (sh));
}
GST_DEBUG_OBJECT (rtmpsink, "have %" G_GSIZE_FORMAT " bytes of header data",
gst_buffer_get_size (rtmpsink->header));
out:
return TRUE;
}
static gboolean
gst_rtmp_sink_event (GstBaseSink * sink, GstEvent * event)
{
GstRTMPSink *rtmpsink = GST_RTMP_SINK (sink);
switch (event->type) {
case GST_EVENT_FLUSH_STOP:
rtmpsink->have_write_error = FALSE;
break;
default:
break;
}
return GST_BASE_SINK_CLASS (parent_class)->event (sink, event);
}
static void
gst_rtmp_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstRTMPSink *sink = GST_RTMP_SINK (object);
switch (prop_id) {
case PROP_LOCATION:
g_value_set_string (value, sink->uri);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}