fdpay: use fd allocator

Use the fd allocator instead of the dmabuf allocator.
Update the wire protocol

src/gst/gstfddepay.c

@@ -40,7 +40,7 @@
 
 #include <gst/gst.h>
 #include <gst/base/gstbasetransform.h>
-#include <gst/allocators/gstdmabuf.h>
+#include <gst/allocators/gstfdmemory.h>
 #include <gio/gunixfdmessage.h>
 
 #include <fcntl.h>
@@ -115,7 +115,7 @@ gst_fddepay_class_init (GstFddepayClass * klass)
 static void
 gst_fddepay_init (GstFddepay * fddepay)
 {
-  fddepay->dmabuf_allocator = gst_dmabuf_allocator_new ();
+  fddepay->fd_allocator = gst_fd_allocator_new ();
 }
 
 void
@@ -126,9 +126,9 @@ gst_fddepay_dispose (GObject * object)
   GST_DEBUG_OBJECT (fddepay, "dispose");
 
   /* clean up as possible.  may be called multiple times */
-  if (fddepay->dmabuf_allocator != NULL) {
+  if (fddepay->fd_allocator != NULL) {
-    g_object_unref (G_OBJECT (fddepay->dmabuf_allocator));
+    g_object_unref (G_OBJECT (fddepay->fd_allocator));
-    fddepay->dmabuf_allocator = NULL;
+    fddepay->fd_allocator = NULL;
   }
 
   G_OBJECT_CLASS (gst_fddepay_parent_class)->dispose (object);
@@ -169,7 +169,7 @@ gst_fddepay_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
 {
   GstFddepay *fddepay = GST_FDDEPAY (trans);
   FDMessage msg;
-  GstMemory *dmabufmem = NULL;
+  GstMemory *fdmem = NULL;
   GstNetControlMessageMeta * meta;
   int *fds = NULL;
   int fds_len = 0;
@@ -215,15 +215,17 @@ gst_fddepay_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
 
   /* FIXME: Use stat to find out the size of the file, to make sure that the
    * size we've been told is the true size for safety and security. */
-  dmabufmem = gst_dmabuf_allocator_alloc (fddepay->dmabuf_allocator, fd,
+  fdmem = gst_fd_allocator_alloc (fddepay->fd_allocator, fd,
-      msg.offset + msg.size);
+      msg.offset + msg.size, GST_FD_MEMORY_FLAG_NONE);
-  gst_memory_resize (dmabufmem, msg.offset, msg.size);
+  gst_memory_resize (fdmem, msg.offset, msg.size);
 
   gst_buffer_remove_all_memory (buf);
   gst_buffer_remove_meta (buf,
       gst_buffer_get_meta (buf, GST_NET_CONTROL_MESSAGE_META_API_TYPE));
-  gst_buffer_append_memory (buf, dmabufmem);
+  gst_buffer_append_memory (buf, fdmem);
-  dmabufmem = NULL;
+  fdmem = NULL;
+
+  GST_BUFFER_OFFSET (buf) = msg.seq;
 
   return GST_FLOW_OK;
 error:

src/gst/gstfddepay.h

@@ -34,7 +34,7 @@ typedef struct _GstFddepayClass GstFddepayClass;
 struct _GstFddepay
 {
   GstBaseTransform base_fddepay;
-  GstAllocator *dmabuf_allocator;
+  GstAllocator *fd_allocator;
 };
 
 struct _GstFddepayClass

src/gst/gstfdpay.c

@@ -40,8 +40,6 @@
 #include "config.h"
 #endif
 
-#include "wire-protocol.h"
-
 #include <gst/gst.h>
 #include <gst/allocators/gstfdmemory.h>
 #include <gst/base/gstbasetransform.h>
@@ -55,6 +53,8 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "wire-protocol.h"
+
 GST_DEBUG_CATEGORY_STATIC (gst_fdpay_debug_category);
 #define GST_CAT_DEFAULT gst_fdpay_debug_category
 
@@ -242,12 +242,16 @@ gst_fdpay_transform (GstBaseTransform * trans, GstBuffer * inbuf,
   GstMapInfo info;
   GError *err = NULL;
   GSocketControlMessage *fdmsg = NULL;
-  FDMessage msg = { 0, 0 };
+  FDMessage msg = { 0, };
 
   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);
+  msg.dts_offset = 0;
   msg.size = fdmem->size;
   msg.offset = fdmem->offset;
 

src/gst/gsttmpfileallocator.c

@@ -83,8 +83,6 @@ gst_tmpfile_allocator_alloc (GstAllocator * allocator, gsize size,
     GstAllocationParams * params)
 {
   GstTmpFileAllocator *alloc = (GstTmpFileAllocator *) allocator;
-  GstFdAllocator *fdalloc = GST_FD_ALLOCATOR_CAST (allocator);
-  GstFdAllocatorClass *klass = GST_FD_ALLOCATOR_GET_CLASS (alloc);
   GstMemory *mem;
   int fd;
   gsize maxsize;
@@ -99,7 +97,7 @@ gst_tmpfile_allocator_alloc (GstAllocator * allocator, gsize size,
   if (fd < 0)
     return NULL;
 
-  mem = klass->alloc (fdalloc, fd, maxsize, GST_FD_MEMORY_FLAG_NONE);
+  mem = gst_fd_allocator_alloc (allocator, fd, maxsize, GST_FD_MEMORY_FLAG_NONE);
   gst_memory_resize (mem, pad (params->prefix, params->align), size);
 
   return mem;
@@ -121,6 +119,8 @@ gst_tmpfile_allocator_init (GstTmpFileAllocator * allocator)
   GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
 
   alloc->mem_type = GST_ALLOCATOR_TMPFILE;
+
+  GST_OBJECT_FLAG_UNSET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC);
 }
 
 GstAllocator *

src/gst/wire-protocol.h

@@ -22,12 +22,24 @@
 
 #include <stdint.h>
 
-/* Almost the simplest possible FD passing protocol.  Each message should have
+/**
+ * @flags: possible flags
+ * @seq: a sequence number
+ * @pts: a PTS or presentation timestamp
+ * @dts_offset: an offset to @pts to get the DTS
+ * @offset: offset in fd
+ * @size: size of data in fd
+ *
+ * Almost the simplest possible FD passing protocol.  Each message should have
  * a file-descriptor attached which should be mmapable.  The data in the FD can
  * be found at offset and is size bytes long. */
 typedef struct {
-  uint64_t offset;
+  guint32 flags;
-  uint64_t size;
+  guint32 seq;
+  gint64 pts;
+  gint64 dts_offset;
+  guint64 offset;
+  guint64 size;
 } FDMessage;
 
 #endif