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porting: hopefully clarify a little

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Wim Taymans 2013-03-27 17:08:51 +01:00
parent 700be18f11
commit 21851c0e04
1 changed files with 5 additions and 4 deletions
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9
docs/random/porting-to-1.0.txt
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@ -233,16 +233,17 @@ CHANGES
a GstBuffer that can then be retrieved with gst_buffer_peek_memory(). a GstBuffer that can then be retrieved with gst_buffer_peek_memory().
GST_BUFFER_DATA(), GST_BUFFER_MALLOCDATA(), GST_BUFFER_FREE_FUNC() and GST_BUFFER_DATA(), GST_BUFFER_MALLOCDATA(), GST_BUFFER_FREE_FUNC() and
GST_BUFFER_SIZE() are gone, along with the fields in GstBuffer. Use the GST_BUFFER_SIZE() are gone, along with the fields in GstBuffer.
memory API to get access to the buffer data. GST_BUFFER_SIZE() can be
replaced with gst_buffer_get_size() but if also access to the data is
required, gst_buffer_map() can return both the size and data in one go.
The most common way to access all the data in a buffer is by using The most common way to access all the data in a buffer is by using
gst_buffer_map() and gst_buffer_unmap(). These calls require you to specify gst_buffer_map() and gst_buffer_unmap(). These calls require you to specify
the access mode required to the data and will automatically merge and return the access mode required to the data and will automatically merge and return
a writable copy of the data. a writable copy of the data.
GST_BUFFER_SIZE() can be replaced with gst_buffer_get_size() but if also
access to the data is required, gst_buffer_map() can return both the size
and data in one go.
The buffer must be writable (gst_buffer_is_writable()) in order to modify The buffer must be writable (gst_buffer_is_writable()) in order to modify
the fields, metadata or buffer memory. gst_buffer_make_writable() will not the fields, metadata or buffer memory. gst_buffer_make_writable() will not
automatically make a writable copy of the memory but will instead increase automatically make a writable copy of the memory but will instead increase