ecore-buffer: Add ecore_buffer library to EFL.

Summary:
Ecore_Buffer is abstraction of graphic buffer.
it supports backend of shm, x11_dri2 and x11_dri3 for now,
and this library also provides method to share buffers between processes.
Ecore_Buffer_Provider and Ecore_Buffer_Consumer is for this, sharing buffer.
provider draws something in to Ecore_Buffer, and consumer receives and displays it.
the binary, bq_mgr is a connection maker for buffer provider and consumer.
it can be included Enlightenment as a deamon later.

@feature

Test Plan:
1. Configure with --enable-ecore-buffer and --enable-always-build-examples to build examples.
2. Run bq_mgr, it connects consumer and provider.
3. Run ecore_buffer_provider_example and ecore_buffer_consumer_example

Reviewers: lsj119, gwanglim, cedric, zmike, jpeg, raster, devilhorns

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D2197

1 files changed, 23 insertions, 0 deletions

diff --git a/src/lib/ecore_buffer/buffer_queue.h b/src/lib/ecore_buffer/buffer_queue.h
new file mode 100644
index 0000000000..f4f551fb6b
--- /dev/null
+++ b/src/lib/ecore_buffer/buffer_queue.h
@@ -0,0 +1,23 @@
+#ifndef _BUFFER_QUEUE_H_
+#define _BUFFER_QUEUE_H_
+
+#include <stdio.h>
+#include <Eina.h>
+
+#include "shared_buffer.h"
+
+typedef struct _Ecore_Buffer_Queue Ecore_Buffer_Queue;
+
+Ecore_Buffer_Queue   *_ecore_buffer_queue_new(int w, int h, int queue_size);
+void                  _ecore_buffer_queue_free(Ecore_Buffer_Queue *ebq);
+void                  _ecore_buffer_queue_enqueue(Ecore_Buffer_Queue *ebq, Shared_Buffer *sb);
+Eina_Bool             _ecore_buffer_queue_dequeue(Ecore_Buffer_Queue *ebq, Shared_Buffer **ret_sb);
+Eina_Bool             _ecore_buffer_queue_is_empty(Ecore_Buffer_Queue *ebq);
+void                  _ecore_buffer_queue_shared_buffer_add(Ecore_Buffer_Queue *ebq, Shared_Buffer *sb);
+void                  _ecore_buffer_queue_shared_buffer_remove(Ecore_Buffer_Queue *ebq, Shared_Buffer *sb);
+Shared_Buffer        *_ecore_buffer_queue_shared_buffer_find(Ecore_Buffer_Queue *ebq, Ecore_Buffer *buffer);
+Eina_List            *_ecore_buffer_queue_shared_buffer_list_get(Ecore_Buffer_Queue *ebq);
+void                  _ecore_buffer_queue_connection_state_set(Ecore_Buffer_Queue *ebq, Eina_Bool connect);
+Eina_Bool             _ecore_buffer_queue_connection_state_get(Ecore_Buffer_Queue *ebq);
+
+#endif