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buffer: add a new flag to track memory changes

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Add a flag to check if the memory changed in a buffer.
This commit is contained in:
Wim Taymans 2014-02-27 14:35:09 +01:00
parent 86f506e9d8
commit 5bca002f4b
2 changed files with 14 additions and 0 deletions
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11
gst/gstbuffer.c
View file

@ -286,6 +286,7 @@ _replace_memory (GstBuffer * buffer, guint len, guint idx, guint length,
&GST_BUFFER_MEM_PTR (buffer, end), (len - end) * sizeof (gpointer));
}
GST_BUFFER_MEM_LEN (buffer) = len - length;
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_TAG_MEMORY);
}
static inline void
@ -320,6 +321,8 @@ _memory_add (GstBuffer * buffer, gint idx, GstMemory * mem, gboolean lock)
gst_memory_lock (mem, GST_LOCK_FLAG_EXCLUSIVE);
GST_BUFFER_MEM_PTR (buffer, idx) = mem;
GST_BUFFER_MEM_LEN (buffer) = len + 1;
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_TAG_MEMORY);
}
GST_DEFINE_MINI_OBJECT_TYPE (GstBuffer, gst_buffer);
@ -519,6 +522,8 @@ _gst_buffer_copy (GstBuffer * buffer)
if (!gst_buffer_copy_into (copy, buffer, GST_BUFFER_COPY_ALL, 0, -1))
gst_buffer_replace (&copy, NULL);
GST_BUFFER_FLAG_SET (copy, GST_BUFFER_FLAG_TAG_MEMORY);
return copy;
}
@ -723,6 +728,7 @@ gst_buffer_new_allocate (GstAllocator * allocator, gsize size,
if (size > 0)
_memory_add (newbuf, -1, gst_memory_ref (mem), TRUE);
#endif
GST_BUFFER_FLAG_SET (newbuf, GST_BUFFER_FLAG_TAG_MEMORY);
return newbuf;
@ -769,6 +775,7 @@ gst_buffer_new_wrapped_full (GstMemoryFlags flags, gpointer data,
gst_memory_new_wrapped (flags, data, maxsize, offset, size, user_data,
notify);
_memory_add (newbuf, -1, mem, TRUE);
GST_BUFFER_FLAG_SET (newbuf, GST_BUFFER_FLAG_TAG_MEMORY);
return newbuf;
}
@ -883,6 +890,7 @@ _get_mapped (GstBuffer * buffer, guint idx, GstMapInfo * info,
GST_BUFFER_MEM_PTR (buffer, idx) = mapped;
/* unlock old memory */
gst_memory_unlock (mem, GST_LOCK_FLAG_EXCLUSIVE);
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_TAG_MEMORY);
}
gst_memory_unref (mem);
@ -1393,7 +1401,9 @@ gst_buffer_resize_range (GstBuffer * buffer, guint idx, gint length,
GST_BUFFER_MEM_PTR (buffer, i) = newmem;
gst_memory_unlock (mem, GST_LOCK_FLAG_EXCLUSIVE);
gst_memory_unref (mem);
}
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_TAG_MEMORY);
}
offset = noffs;
@ -1853,6 +1863,7 @@ gst_buffer_append_region (GstBuffer * buf1, GstBuffer * buf2, gssize offset,
}
GST_BUFFER_MEM_LEN (buf2) = 0;
GST_BUFFER_FLAG_UNSET (buf2, GST_BUFFER_FLAG_TAG_MEMORY);
gst_buffer_unref (buf2);
return buf1;

3
gst/gstbuffer.h
View file

@ -192,6 +192,8 @@ typedef struct _GstBufferPool GstBufferPool;
* @GST_BUFFER_FLAG_DROPPABLE: the buffer can be dropped without breaking the
* stream, for example to reduce bandwidth.
* @GST_BUFFER_FLAG_DELTA_UNIT: this unit cannot be decoded independently.
* @GST_BUFFER_FLAG_TAG_MEMORY: this flag is cleared when the memory of the buffer
* is added/removed
* @GST_BUFFER_FLAG_LAST: additional media specific flags can be added starting from
* this flag.
*
@ -208,6 +210,7 @@ typedef enum {
GST_BUFFER_FLAG_GAP = (GST_MINI_OBJECT_FLAG_LAST << 7),
GST_BUFFER_FLAG_DROPPABLE = (GST_MINI_OBJECT_FLAG_LAST << 8),
GST_BUFFER_FLAG_DELTA_UNIT = (GST_MINI_OBJECT_FLAG_LAST << 9),
GST_BUFFER_FLAG_TAG_MEMORY = (GST_MINI_OBJECT_FLAG_LAST << 10),
GST_BUFFER_FLAG_LAST = (GST_MINI_OBJECT_FLAG_LAST << 16)
} GstBufferFlags;