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141 lines
3.4 KiB
C
141 lines
3.4 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstbufferpool.c: Buffer-pool operations
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gst_private.h"
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#include "gstbuffer.h"
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/**
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* gst_buffer_pool_new:
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*
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* Create a new buffer pool.
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*
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* Returns: new buffer pool
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*/
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GstBufferPool*
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gst_buffer_pool_new (void)
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{
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GstBufferPool *pool;
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pool = g_malloc (sizeof(GstBufferPool));
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GST_DEBUG (0,"BUF: allocating new buffer pool %p\n", pool);
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pool->new_buffer = NULL;
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pool->destroy_buffer = NULL;
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return pool;
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}
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/**
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* gst_buffer_pool_set_create_function:
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* @pool: the pool to set the create function for
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* @create: the create function
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* @user_data: any user data to be passed in the create function
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*
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* Sets the function that will be called when a buffer is created
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* from this pool.
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*/
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void
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gst_buffer_pool_set_create_function (GstBufferPool *pool,
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GstBufferPoolCreateFunction create,
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gpointer user_data)
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{
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g_return_if_fail (pool != NULL);
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pool->new_buffer = create;
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pool->new_user_data = user_data;
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}
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/**
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* gst_buffer_pool_set_destroy_function:
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* @pool: the pool to set the destroy function for
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* @destroy: the destroy function
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* @user_data: any user data to be passed in the create function
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*
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* Sets the function that will be called when a buffer is destroyed
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* from this pool.
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*/
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void
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gst_buffer_pool_set_destroy_function (GstBufferPool *pool,
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GstBufferPoolDestroyFunction destroy,
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gpointer user_data)
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{
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g_return_if_fail (pool != NULL);
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pool->destroy_buffer = destroy;
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pool->destroy_user_data = user_data;
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}
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/**
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* gst_buffer_pool_destroy:
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* @pool: the pool to destroy
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*
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* Frees the memory for this bufferpool.
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*/
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void
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gst_buffer_pool_destroy (GstBufferPool *pool)
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{
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g_return_if_fail (pool != NULL);
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g_free(pool);
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}
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/**
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* gst_buffer_pool_new_buffer:
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* @pool: the pool to create the buffer from
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*
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* Uses the given pool to create a new buffer.
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*
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* Returns: The new buffer
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*/
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GstBuffer*
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gst_buffer_pool_new_buffer (GstBufferPool *pool)
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{
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GstBuffer *buffer;
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g_return_val_if_fail (pool != NULL, NULL);
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buffer = pool->new_buffer (pool, pool->new_user_data);
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buffer->pool = pool;
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return buffer;
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}
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/**
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* gst_buffer_pool_destroy_buffer:
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* @pool: the pool to return the buffer to
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* @buffer: the buffer to return to the pool
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*
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* Gives a buffer back to the given pool.
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*/
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void
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gst_buffer_pool_destroy_buffer (GstBufferPool *pool,
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GstBuffer *buffer)
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{
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g_return_if_fail (pool != NULL);
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g_return_if_fail (buffer != NULL);
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pool->destroy_buffer (pool, buffer, pool->new_user_data);
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}
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