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added docs for _span and _merge, set pool_private to NULL on create

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Original commit message from CVS:
added docs for _span and _merge, set pool_private to NULL on create
This commit is contained in:
Erik Walthinsen 2001-09-04 04:34:32 +00:00
parent 43c70c0889
commit b368687c6c
1 changed files with 34 additions and 0 deletions
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34
gst/gstbuffer.c
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@ -75,6 +75,7 @@ gst_buffer_new(void)
buffer->timestamp = 0;
buffer->parent = NULL;
buffer->pool = NULL;
buffer->pool_private = NULL;
buffer->free = NULL;
buffer->copy = NULL;
@ -380,6 +381,25 @@ gst_buffer_copy (GstBuffer *buffer)
}
/**
* gst_buffer_span:
* @buf1: first source buffer to merge
* @offset: offset in first buffer to start new buffer
* @buf2: second source buffer to merge
* @len: length of new buffer
*
* Create a new buffer that consists of part of buf1 and buf2.
* Logically, buf1 and buf2 are concatenated into a single larger
* buffer, and a new buffer is created at the given offset inside
* this space, with a given length.
*
* If the two source buffers are children of the same larger buffer,
* and are contiguous, the new buffer will be a child of the shared
* parent, and thus no copying is necessary.
*
* Returns: new buffer that spans the two source buffers
*/
// FIXME need to think about CoW and such...
GstBuffer *
gst_buffer_span (GstBuffer *buf1, guint32 offset, GstBuffer *buf2, guint32 len)
{
@ -424,6 +444,20 @@ gst_buffer_span (GstBuffer *buf1, guint32 offset, GstBuffer *buf2, guint32 len)
}
/**
* gst_buffer_merge:
* @buf1: first source buffer to merge
* @buf2: second source buffer to merge
*
* Create a new buffer that is the concatenation of the two source
* buffers. The original source buffers will not be modified or
* unref'd.
*
* Internally is nothing more than a specialized gst_buffer_span,
* so the same optimizations can occur.
*
* Returns: new buffer that's the concatenation of the source buffers
*/
GstBuffer *
gst_buffer_merge (GstBuffer *buf1, GstBuffer *buf2)
{