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Rework the wire protocol

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Send a command stream over the socket.
Implement a new buffer object that holds the data and commands.
Make iterator and builders to parse and construct buffers.
Rework gstreamer elements to use new API for creating and parsing
buffers.
Add _release_buffer to notify a stream when we are done processing the
buffer. This will eventually go all the way to the server and will allow
us to do more complicated buffer management.
This commit is contained in:
Wim Taymans 2015-08-24 16:41:04 +02:00
parent d0f3f3125b
commit c47fcd8105
14 changed files with 937 additions and 229 deletions
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57
src/gst/gstfdpay.c
View file

@ -53,7 +53,7 @@
#include <string.h>
#include <unistd.h>
#include "wire-protocol.h"
#include <client/pinos.h>
GST_DEBUG_CATEGORY_STATIC (gst_fdpay_debug_category);
#define GST_CAT_DEFAULT gst_fdpay_debug_category
@ -191,7 +191,7 @@ gst_fdpay_transform_size (GstBaseTransform *trans, GstPadDirection direction,
return FALSE;
} else {
/* transform size going downstream */
*othersize = sizeof (FDMessage);
*othersize = sizeof (PinosBuffer) + 30;
}
return TRUE;
@ -241,40 +241,53 @@ gst_fdpay_transform (GstBaseTransform * trans, GstBuffer * inbuf,
GstMemory *fdmem = NULL;
GstMapInfo info;
GError *err = NULL;
GSocketControlMessage *fdmsg = NULL;
FDMessage msg = { 0, };
PinosBuffer pbuf;
PinosPacketBuilder builder;
PinosBufferHeader hdr;
gsize size;
GST_DEBUG_OBJECT (fdpay, "transform_ip");
fdmem = gst_fdpay_get_fd_memory (fdpay, inbuf);
msg.flags = 0;
msg.seq = GST_BUFFER_OFFSET (inbuf);
msg.pts = GST_BUFFER_TIMESTAMP (inbuf) + GST_ELEMENT_CAST (trans)->base_time;
msg.dts_offset = 0;
msg.size = fdmem->size;
msg.offset = fdmem->offset;
hdr.flags = 0;
hdr.seq = GST_BUFFER_OFFSET (inbuf);
hdr.pts = GST_BUFFER_TIMESTAMP (inbuf) + GST_ELEMENT_CAST (trans)->base_time;
hdr.dts_offset = 0;
fdmsg = g_unix_fd_message_new ();
if (!g_unix_fd_message_append_fd ((GUnixFDMessage*) fdmsg,
gst_fd_memory_get_fd (fdmem), &err)) {
pinos_packet_builder_init (&builder, &hdr);
if (!pinos_packet_builder_add_fd_payload (&builder,
fdmem->offset,
fdmem->size,
gst_fd_memory_get_fd (fdmem),
&err))
goto append_fd_failed;
}
pinos_packet_builder_end (&builder, &pbuf);
gst_memory_unref(fdmem);
fdmem = NULL;
gst_buffer_add_net_control_message_meta (outbuf, fdmsg);
g_clear_object (&fdmsg);
gst_buffer_add_net_control_message_meta (outbuf,
pinos_buffer_get_socket_control_message (&pbuf));
size = pinos_buffer_get_size (&pbuf);
gst_buffer_map (outbuf, &info, GST_MAP_WRITE);
memcpy (info.data, &msg, sizeof (msg));
pinos_buffer_store (&pbuf, info.data);
gst_buffer_unmap (outbuf, &info);
gst_buffer_resize (outbuf, 0, size);
pinos_buffer_clear (&pbuf);
return GST_FLOW_OK;
/* ERRORS */
append_fd_failed:
GST_WARNING_OBJECT (trans, "Appending fd failed: %s", err->message);
gst_memory_unref(fdmem);
g_clear_error (&err);
g_clear_object (&fdmsg);
return GST_FLOW_ERROR;
{
GST_WARNING_OBJECT (trans, "Appending fd failed: %s", err->message);
gst_memory_unref(fdmem);
g_clear_error (&err);
return GST_FLOW_ERROR;
}
}