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buffer: add option to deep copy a buffer

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Add a buffer copy flag to force a memory copy in all cases.
This commit is contained in:
Wim Taymans 2013-02-16 14:59:02 +01:00
parent 6c7573226e
commit 1fcef378bd
2 changed files with 17 additions and 8 deletions
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8
gst/gstbuffer.c
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@ -402,6 +402,9 @@ gst_buffer_copy_into (GstBuffer * dest, GstBuffer * src,
if (flags & GST_BUFFER_COPY_MEMORY) { if (flags & GST_BUFFER_COPY_MEMORY) {
GstMemory *mem; GstMemory *mem;
gsize skip, left, len, i, bsize; gsize skip, left, len, i, bsize;
gboolean deep;
deep = flags & GST_BUFFER_COPY_DEEP;
len = GST_BUFFER_MEM_LEN (src); len = GST_BUFFER_MEM_LEN (src);
left = size; left = size;
@ -419,8 +422,9 @@ gst_buffer_copy_into (GstBuffer * dest, GstBuffer * src,
gsize tocopy; gsize tocopy;
tocopy = MIN (bsize - skip, left); tocopy = MIN (bsize - skip, left);
if (GST_MEMORY_IS_NO_SHARE (mem)) { if (deep || GST_MEMORY_IS_NO_SHARE (mem)) {
/* no share, always copy then */ /* deep copy or we're not allowed to share this memory
* between buffers, always copy then */
mem = gst_memory_copy (mem, skip, tocopy); mem = gst_memory_copy (mem, skip, tocopy);
skip = 0; skip = 0;
} else if (tocopy < bsize) { } else if (tocopy < bsize) {

11
gst/gstbuffer.h
View file

@ -377,12 +377,16 @@ gst_buffer_copy (const GstBuffer * buf)
* @GST_BUFFER_COPY_FLAGS: flag indicating that buffer flags should be copied * @GST_BUFFER_COPY_FLAGS: flag indicating that buffer flags should be copied
* @GST_BUFFER_COPY_TIMESTAMPS: flag indicating that buffer pts, dts, * @GST_BUFFER_COPY_TIMESTAMPS: flag indicating that buffer pts, dts,
* duration, offset and offset_end should be copied * duration, offset and offset_end should be copied
* @GST_BUFFER_COPY_MEMORY: flag indicating that buffer memory should be copied * @GST_BUFFER_COPY_MEMORY: flag indicating that buffer memory should be reffed
* and appended to already existing memory * and appended to already existing memory. Unless the memory is marked as
* NO_SHARE, no actual copy of the memory is made but it is simply reffed.
* Add @GST_BUFFER_COPY_DEEP to force a real copy.
* @GST_BUFFER_COPY_MERGE: flag indicating that buffer memory should be * @GST_BUFFER_COPY_MERGE: flag indicating that buffer memory should be
* merged * merged
* @GST_BUFFER_COPY_META: flag indicating that buffer meta should be * @GST_BUFFER_COPY_META: flag indicating that buffer meta should be
* copied * copied
* @GST_BUFFER_COPY_DEEP: flag indicating that memory should always be
* copied instead of reffed.
* *
* A set of flags that can be provided to the gst_buffer_copy_into() * A set of flags that can be provided to the gst_buffer_copy_into()
* function to specify which items should be copied. * function to specify which items should be copied.
@ -393,7 +397,8 @@ typedef enum {
GST_BUFFER_COPY_TIMESTAMPS = (1 << 1), GST_BUFFER_COPY_TIMESTAMPS = (1 << 1),
GST_BUFFER_COPY_META = (1 << 2), GST_BUFFER_COPY_META = (1 << 2),
GST_BUFFER_COPY_MEMORY = (1 << 3), GST_BUFFER_COPY_MEMORY = (1 << 3),
GST_BUFFER_COPY_MERGE = (1 << 4) GST_BUFFER_COPY_MERGE = (1 << 4),
GST_BUFFER_COPY_DEEP = (1 << 5)
} GstBufferCopyFlags; } GstBufferCopyFlags;
/** /**