From d9701bf8a7d9ee922ec753d0ce255f06ee4dd3d6 Mon Sep 17 00:00:00 2001
From: Wim Taymans <wim.taymans@gmail.com>
Date: Mon, 14 Aug 2000 10:57:30 +0000
Subject: [PATCH] Added the bufferpool handler.
Original commit message from CVS:
Added the bufferpool handler.
This object is able to generate buffers and is passed between elements to
exchange buffers. Elements can also use this pool to efficiently generate
output buffers.
---
gst/gstbufferpool.c | 86 +++++++++++++++++++++++++++++++++++++++++++++
gst/gstbufferpool.h | 68 +++++++++++++++++++++++++++++++++++
2 files changed, 154 insertions(+)
create mode 100644 gst/gstbufferpool.c
create mode 100644 gst/gstbufferpool.h
diff --git a/gst/gstbufferpool.c b/gst/gstbufferpool.c
new file mode 100644
index 0000000000..ca99a85eb4
--- /dev/null
+++ b/gst/gstbufferpool.c
@@ -0,0 +1,86 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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.
+ */
+
+
+#include <gst/gst.h>
+#include <gst/gstbufferpool.h>
+
+
+
+/**
+ * gst_buffer_pool_new:
+ *
+ * Create a new buffer pool.
+ *
+ * Returns: new buffer pool
+ */
+GstBufferPool *gst_buffer_pool_new()
+{
+ GstBufferPool *pool;
+
+ pool = g_malloc(sizeof(GstBufferPool));
+ DEBUG("BUF: allocating new buffer pool %p\n", pool);
+
+ pool->new_buffer = NULL;
+ pool->destroy_buffer = NULL;
+ return pool;
+}
+
+void gst_buffer_pool_set_create_function(GstBufferPool *pool, GstBufferPoolCreateFunction create, gpointer user_data)
+{
+ g_return_if_fail(pool != NULL);
+
+ pool->new_buffer = create;
+ pool->new_user_data = user_data;
+}
+
+void gst_buffer_pool_set_destroy_function(GstBufferPool *pool, GstBufferPoolDestroyFunction destroy, gpointer user_data)
+{
+ g_return_if_fail(pool != NULL);
+
+ pool->destroy_buffer = destroy;
+ pool->destroy_user_data = user_data;
+}
+
+void gst_buffer_pool_destroy(GstBufferPool *pool)
+{
+ g_return_if_fail(pool != NULL);
+
+ g_free(pool);
+}
+
+GstBuffer *gst_buffer_pool_new_buffer(GstBufferPool *pool)
+{
+ GstBuffer *buffer;
+
+ g_return_val_if_fail(pool != NULL, NULL);
+
+ buffer = pool->new_buffer(pool, pool->new_user_data);
+ buffer->pool = pool;
+
+ return buffer;
+}
+
+void gst_buffer_pool_destroy_buffer(GstBufferPool *pool, GstBuffer *buffer)
+{
+ g_return_if_fail(pool != NULL);
+ g_return_if_fail(buffer != NULL);
+
+ pool->destroy_buffer(pool, buffer, pool->new_user_data);
+}
diff --git a/gst/gstbufferpool.h b/gst/gstbufferpool.h
new file mode 100644
index 0000000000..823eb5466a
--- /dev/null
+++ b/gst/gstbufferpool.h
@@ -0,0 +1,68 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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_BUFFER_POOL_H__
+#define __GST_BUFFER_POOL_H__
+
+#include "gstbuffer.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GST_BUFFER_POOL(buf) \
+ ((GstBufferPool *)(buf))
+
+typedef struct _GstBufferPool GstBufferPool;
+
+typedef GstBuffer *(*GstBufferPoolCreateFunction) (GstBufferPool *pool, gpointer user_data);
+typedef void (*GstBufferPoolDestroyFunction) (GstBufferPool *pool, GstBuffer *buffer, gpointer user_data);
+
+struct _GstBufferPool {
+ /* will be called when a new buffer is to be created */
+ GstBufferPoolCreateFunction new_buffer;
+ /* user data to pass with the new_buffer function */
+ gpointer new_user_data;
+
+ gpointer destroy_user_data;
+ GstBufferPoolDestroyFunction destroy_buffer;
+};
+
+/* creating a new buffer pool from scratch */
+GstBufferPool *gst_buffer_pool_new();
+
+/* creating a buffer from the pool */
+GstBuffer *gst_buffer_pool_new_buffer(GstBufferPool *pool);
+void gst_buffer_pool_destroy_buffer(GstBufferPool *pool, GstBuffer *buffer);
+
+/* setting create and destroy functions */
+void gst_buffer_pool_set_create_function(GstBufferPool *pool, GstBufferPoolCreateFunction create, gpointer user_data);
+void gst_buffer_pool_set_destroy_function(GstBufferPool *pool, GstBufferPoolDestroyFunction destroy, gpointer user_data);
+
+/* destroying the buffer pool */
+void gst_buffer_pool_destroy(GstBufferPool *pool);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GST_BUFFER_POOL_H__ */