mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-28 04:31:06 +00:00
buffer: optimize memory handling
This commit is contained in:
Wim Taymans
parent
a6d2490b10
commit
d9becdcd27
2 changed files with 141 additions and 69 deletions
203
gst/gstbuffer.c
203
gst/gstbuffer.c
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@ -138,20 +138,36 @@ struct _GstMetaItem
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GstMetaItem *next;
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GstMeta meta;
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};
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#define ITEM_SIZE(info) ((info)->size + sizeof (GstMetaItem))
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#define GST_BUFFER_MEMORY(b) (((GstBufferImpl *)(b))->memory)
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#define GST_BUFFER_MEM_MAX 16
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#define GST_BUFFER_MEM_LEN(b) (((GstBufferImpl *)(b))->len)
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#define GST_BUFFER_MEM_ARRAY(b) (((GstBufferImpl *)(b))->mem)
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#define GST_BUFFER_MEM_PTR(b,i) (((GstBufferImpl *)(b))->mem[i])
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#define GST_BUFFER_META(b) (((GstBufferImpl *)(b))->item)
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typedef struct
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{
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GstBuffer buffer;
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GPtrArray *memory;
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guint len;
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GstMemory *mem[GST_BUFFER_MEM_MAX];
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GstMetaItem *item;
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} GstBufferImpl;
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#define ITEM_SIZE(info) ((info)->size + sizeof (GstMetaItem))
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static inline void
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_memory_add (GstBuffer * buffer, GstMemory * mem)
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{
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guint len = GST_BUFFER_MEM_LEN (buffer);
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/* FIXME, span buffers when we run out of places */
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g_return_if_fail (len < GST_BUFFER_MEM_MAX);
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GST_BUFFER_MEM_PTR (buffer, len) = mem;
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GST_BUFFER_MEM_LEN (buffer) = len + 1;
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}
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#if 1
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/* buffer alignment in bytes
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* an alignment of 8 would be the same as malloc() guarantees
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*/
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@ -166,6 +182,7 @@ static size_t _gst_buffer_data_alignment = BUFFER_ALIGNMENT;
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#error "No buffer alignment configured"
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#endif
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#endif /* HAVE_POSIX_MEMALIGN */
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#endif
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void
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_gst_buffer_initialize (void)
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@ -249,17 +266,15 @@ gst_buffer_copy_into (GstBuffer * dest, GstBuffer * src,
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}
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if (flags & GST_BUFFER_COPY_MEMORY) {
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GPtrArray *sarr = GST_BUFFER_MEMORY (src);
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GPtrArray *darr = GST_BUFFER_MEMORY (dest);
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GstMemory *mem;
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gsize left, len, i, bsize;
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len = sarr->len;
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len = GST_BUFFER_MEM_LEN (src);
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left = size;
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/* copy and subbuffer */
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for (i = 0; i < len && left > 0; i++) {
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mem = g_ptr_array_index (sarr, i);
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mem = GST_BUFFER_MEM_PTR (src, i);
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bsize = gst_memory_get_sizes (mem, NULL);
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if (bsize <= offset) {
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@ -275,7 +290,7 @@ gst_buffer_copy_into (GstBuffer * dest, GstBuffer * src,
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} else {
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mem = gst_memory_ref (mem);
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}
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g_ptr_array_add (darr, mem);
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_memory_add (dest, mem);
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left -= tocopy;
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}
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}
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@ -326,6 +341,8 @@ static void
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_gst_buffer_free (GstBuffer * buffer)
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{
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GstMetaItem *walk, *next;
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guint i, len;
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gsize msize;
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g_return_if_fail (buffer != NULL);
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@ -347,10 +364,17 @@ _gst_buffer_free (GstBuffer * buffer)
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g_slice_free1 (ITEM_SIZE (info), walk);
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}
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/* free our data, unrefs the memory too */
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g_ptr_array_free (GST_BUFFER_MEMORY (buffer), TRUE);
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/* get the size, when unreffing the memory, we could also unref the buffer
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* itself */
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msize = GST_MINI_OBJECT_SIZE (buffer);
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g_slice_free1 (GST_MINI_OBJECT_SIZE (buffer), buffer);
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/* free our memory */
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len = GST_BUFFER_MEM_LEN (buffer);
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for (i = 0; i < len; i++)
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gst_memory_unref (GST_BUFFER_MEM_PTR (buffer, i));
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if (msize)
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g_slice_free1 (msize, buffer);
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}
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static void
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@ -365,14 +389,15 @@ gst_buffer_init (GstBufferImpl * buffer, gsize size)
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buffer->buffer.mini_object.free =
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(GstMiniObjectFreeFunction) _gst_buffer_free;
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GST_BUFFER (buffer)->pool = NULL;
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GST_BUFFER_CAPS (buffer) = NULL;
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GST_BUFFER_TIMESTAMP (buffer) = GST_CLOCK_TIME_NONE;
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GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE;
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GST_BUFFER_OFFSET (buffer) = GST_BUFFER_OFFSET_NONE;
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GST_BUFFER_OFFSET_END (buffer) = GST_BUFFER_OFFSET_NONE;
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/* FIXME, do more efficient with array in the buffer memory itself */
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GST_BUFFER_MEMORY (buffer) =
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g_ptr_array_new_with_free_func ((GDestroyNotify) gst_memory_unref);
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GST_BUFFER_MEM_LEN (buffer) = 0;
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GST_BUFFER_META (buffer) = NULL;
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}
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/**
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@ -389,7 +414,7 @@ gst_buffer_new (void)
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{
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GstBufferImpl *newbuf;
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newbuf = g_slice_new0 (GstBufferImpl);
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newbuf = g_slice_new (GstBufferImpl);
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GST_CAT_LOG (GST_CAT_BUFFER, "new %p", newbuf);
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gst_buffer_init (newbuf, sizeof (GstBufferImpl));
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@ -417,7 +442,12 @@ gst_buffer_new_and_alloc (guint size)
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{
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GstBuffer *newbuf;
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GstMemory *mem;
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#if 0
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guint8 *data;
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gsize asize;
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#endif
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#if 1
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if (size > 0) {
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mem = gst_memory_new_alloc (size, _gst_buffer_data_alignment);
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if (G_UNLIKELY (mem == NULL))
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@ -429,11 +459,54 @@ gst_buffer_new_and_alloc (guint size)
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newbuf = gst_buffer_new ();
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if (mem != NULL)
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gst_buffer_take_memory (newbuf, mem);
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_memory_add (newbuf, mem);
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GST_CAT_LOG (GST_CAT_BUFFER, "new %p of size %d", newbuf, size);
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return newbuf;
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#endif
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#if 0
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asize = sizeof (GstBufferImpl) + size;
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data = g_slice_alloc (asize);
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if (G_UNLIKELY (data == NULL))
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goto no_memory;
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newbuf = GST_BUFFER_CAST (data);
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gst_buffer_init ((GstBufferImpl *) data, asize);
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if (size > 0) {
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mem = gst_memory_new_wrapped (0, data + sizeof (GstBufferImpl), NULL,
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size, 0, size);
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_memory_add (newbuf, mem);
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}
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return newbuf;
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#endif
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#if 0
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/* allocate memory and buffer */
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asize = sizeof (GstBufferImpl) + size;
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mem = gst_memory_new_alloc (asize, 0);
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if (G_UNLIKELY (mem == NULL))
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goto no_memory;
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/* map the data part and init the buffer in it, set the buffer size to 0 so
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* that a finalize won't free the buffer */
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data = gst_memory_map (mem, &asize, NULL, GST_MAP_WRITE);
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gst_buffer_init ((GstBufferImpl *) data, 0);
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gst_memory_unmap (mem, data, asize);
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/* strip off the buffer */
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gst_memory_trim (mem, sizeof (GstBufferImpl), size);
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newbuf = GST_BUFFER_CAST (data);
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if (size > 0)
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_memory_add (newbuf, mem);
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#endif
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return newbuf;
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/* ERRORS */
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no_memory:
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@ -456,7 +529,7 @@ gst_buffer_n_memory (GstBuffer * buffer)
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{
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g_return_val_if_fail (GST_IS_BUFFER (buffer), 0);
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return GST_BUFFER_MEMORY (buffer)->len;
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return GST_BUFFER_MEM_LEN (buffer);
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}
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/**
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@ -474,7 +547,7 @@ gst_buffer_take_memory (GstBuffer * buffer, GstMemory * mem)
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g_return_if_fail (gst_buffer_is_writable (buffer));
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g_return_if_fail (mem != NULL);
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g_ptr_array_add (GST_BUFFER_MEMORY (buffer), mem);
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_memory_add (buffer, mem);
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}
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/**
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@ -492,13 +565,11 @@ GstMemory *
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gst_buffer_peek_memory (GstBuffer * buffer, guint idx)
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{
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GstMemory *mem;
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GPtrArray *arr;
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g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
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arr = GST_BUFFER_MEMORY (buffer);
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g_return_val_if_fail (idx < arr->len, NULL);
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g_return_val_if_fail (idx < GST_BUFFER_MEM_LEN (buffer), NULL);
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mem = g_ptr_array_index (arr, idx);
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mem = GST_BUFFER_MEM_PTR (buffer, idx);
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return mem;
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}
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@ -516,16 +587,26 @@ gst_buffer_peek_memory (GstBuffer * buffer, guint idx)
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void
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gst_buffer_remove_memory_range (GstBuffer * buffer, guint idx, guint length)
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{
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GPtrArray *arr;
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guint len, i, end;
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g_return_if_fail (GST_IS_BUFFER (buffer));
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g_return_if_fail (gst_buffer_is_writable (buffer));
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arr = GST_BUFFER_MEMORY (buffer);
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len = GST_BUFFER_MEM_LEN (buffer);
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if (length == -1) {
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g_return_if_fail (idx < arr->len);
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length = arr->len - idx;
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g_return_if_fail (idx < len);
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length = len - idx;
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}
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g_ptr_array_remove_range (arr, idx, length);
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end = idx + length;
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for (i = idx; i < end; i++)
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gst_memory_unref (GST_BUFFER_MEM_PTR (buffer, i));
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if (end != len) {
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g_memmove (&GST_BUFFER_MEM_PTR (buffer, idx),
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&GST_BUFFER_MEM_PTR (buffer, end), (len - end) * sizeof (gpointer));
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}
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GST_BUFFER_MEM_LEN (buffer) = len - length;
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}
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/**
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@ -539,17 +620,15 @@ gst_buffer_remove_memory_range (GstBuffer * buffer, guint idx, guint length)
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gsize
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gst_buffer_get_size (GstBuffer * buffer)
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{
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GPtrArray *arr;
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guint i, size, len;
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g_return_val_if_fail (GST_IS_BUFFER (buffer), 0);
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arr = GST_BUFFER_MEMORY (buffer);
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len = arr->len;
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len = GST_BUFFER_MEM_LEN (buffer);
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size = 0;
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for (i = 0; i < len; i++) {
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size += gst_memory_get_sizes (g_ptr_array_index (arr, i), NULL);
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size += gst_memory_get_sizes (GST_BUFFER_MEM_PTR (buffer, i), NULL);
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}
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return size;
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}
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@ -565,7 +644,6 @@ gst_buffer_get_size (GstBuffer * buffer)
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void
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gst_buffer_trim (GstBuffer * buffer, gsize offset, gsize size)
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{
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GPtrArray *arr;
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guint len;
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guint si, di;
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gsize bsize;
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@ -576,12 +654,11 @@ gst_buffer_trim (GstBuffer * buffer, gsize offset, gsize size)
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g_return_if_fail (gst_buffer_is_writable (buffer));
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arr = GST_BUFFER_MEMORY (buffer);
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len = arr->len;
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len = GST_BUFFER_MEM_LEN (buffer);
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/* copy and trim */
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for (di = si = 0; si < len && size > 0; si++) {
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mem = g_ptr_array_index (arr, si);
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mem = GST_BUFFER_MEM_PTR (buffer, si);
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bsize = gst_memory_get_sizes (mem, NULL);
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if (bsize <= offset) {
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@ -603,11 +680,11 @@ gst_buffer_trim (GstBuffer * buffer, gsize offset, gsize size)
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mem = tmp;
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}
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}
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g_ptr_array_index (arr, di++) = mem;
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GST_BUFFER_MEM_PTR (buffer, di++) = mem;
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size -= tocopy;
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}
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}
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g_ptr_array_set_size (arr, di);
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GST_BUFFER_MEM_LEN (buffer) = di;
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}
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/**
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@ -638,14 +715,12 @@ gpointer
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gst_buffer_map (GstBuffer * buffer, gsize * size, gsize * maxsize,
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GstMapFlags flags)
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{
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GPtrArray *arr;
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guint len;
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gpointer data;
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g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
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arr = GST_BUFFER_MEMORY (buffer);
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len = arr->len;
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len = GST_BUFFER_MEM_LEN (buffer);
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if (G_UNLIKELY ((flags & GST_MAP_WRITE) && !gst_buffer_is_writable (buffer)))
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goto not_writable;
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@ -653,7 +728,7 @@ gst_buffer_map (GstBuffer * buffer, gsize * size, gsize * maxsize,
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if (G_LIKELY (len == 1)) {
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GstMemory *mem;
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mem = g_ptr_array_index (arr, 0);
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mem = GST_BUFFER_MEM_PTR (buffer, 0);
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if (flags & GST_MAP_WRITE) {
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if (G_UNLIKELY (!GST_MEMORY_IS_WRITABLE (mem))) {
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@ -661,7 +736,7 @@ gst_buffer_map (GstBuffer * buffer, gsize * size, gsize * maxsize,
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/* replace with a writable copy */
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copy = gst_memory_copy (mem, 0, gst_memory_get_sizes (mem, NULL));
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g_ptr_array_index (arr, 0) = copy;
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GST_BUFFER_MEM_PTR (buffer, 0) = copy;
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gst_memory_unref (mem);
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mem = copy;
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}
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@ -698,17 +773,15 @@ not_writable:
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gboolean
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gst_buffer_unmap (GstBuffer * buffer, gpointer data, gsize size)
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{
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GPtrArray *arr;
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gboolean result;
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guint len;
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g_return_val_if_fail (GST_IS_BUFFER (buffer), FALSE);
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arr = GST_BUFFER_MEMORY (buffer);
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len = arr->len;
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len = GST_BUFFER_MEM_LEN (buffer);
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if (G_LIKELY (len == 1)) {
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GstMemory *mem = g_ptr_array_index (arr, 0);
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GstMemory *mem = GST_BUFFER_MEM_PTR (buffer, 0);
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result = gst_memory_unmap (mem, data, size);
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} else {
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@ -731,7 +804,6 @@ void
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gst_buffer_fill (GstBuffer * buffer, gsize offset, gconstpointer src,
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gsize size)
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{
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GPtrArray *arr;
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gsize i, len;
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const guint8 *ptr = src;
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@ -739,15 +811,14 @@ gst_buffer_fill (GstBuffer * buffer, gsize offset, gconstpointer src,
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g_return_if_fail (gst_buffer_is_writable (buffer));
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g_return_if_fail (src != NULL);
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arr = GST_BUFFER_MEMORY (buffer);
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len = arr->len;
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len = GST_BUFFER_MEM_LEN (buffer);
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for (i = 0; i < len && size > 0; i++) {
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guint8 *data;
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gsize ssize, tocopy;
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GstMemory *mem;
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mem = g_ptr_array_index (arr, i);
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mem = GST_BUFFER_MEM_PTR (buffer, i);
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data = gst_memory_map (mem, &ssize, NULL, GST_MAP_WRITE);
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if (ssize > offset) {
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@ -777,22 +848,20 @@ gst_buffer_fill (GstBuffer * buffer, gsize offset, gconstpointer src,
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void
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gst_buffer_extract (GstBuffer * buffer, gsize offset, gpointer dest, gsize size)
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{
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GPtrArray *arr;
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gsize i, len;
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guint8 *ptr = dest;
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g_return_if_fail (GST_IS_BUFFER (buffer));
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g_return_if_fail (dest != NULL);
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arr = GST_BUFFER_MEMORY (buffer);
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len = arr->len;
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len = GST_BUFFER_MEM_LEN (buffer);
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for (i = 0; i < len && size > 0; i++) {
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guint8 *data;
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gsize ssize, tocopy;
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GstMemory *mem;
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mem = g_ptr_array_index (arr, i);
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mem = GST_BUFFER_MEM_PTR (buffer, i);
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data = gst_memory_map (mem, &ssize, NULL, GST_MAP_READ);
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if (ssize > offset) {
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@ -925,18 +994,20 @@ gst_buffer_create_sub (GstBuffer * buffer, gsize offset, gsize size)
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gboolean
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gst_buffer_is_span_fast (GstBuffer * buf1, GstBuffer * buf2)
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{
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GPtrArray *arr1, *arr2;
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GstMemory **arr1, **arr2;
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gsize len1, len2;
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|
||||
g_return_val_if_fail (GST_IS_BUFFER (buf1), FALSE);
|
||||
g_return_val_if_fail (GST_IS_BUFFER (buf2), FALSE);
|
||||
g_return_val_if_fail (buf1->mini_object.refcount > 0, FALSE);
|
||||
g_return_val_if_fail (buf2->mini_object.refcount > 0, FALSE);
|
||||
|
||||
arr1 = GST_BUFFER_MEMORY (buf1);
|
||||
arr2 = GST_BUFFER_MEMORY (buf2);
|
||||
arr1 = GST_BUFFER_MEM_ARRAY (buf1);
|
||||
len1 = GST_BUFFER_MEM_LEN (buf1);
|
||||
arr2 = GST_BUFFER_MEM_ARRAY (buf2);
|
||||
len2 = GST_BUFFER_MEM_LEN (buf2);
|
||||
|
||||
return gst_memory_is_span ((GstMemory **) arr1->pdata, arr1->len,
|
||||
(GstMemory **) arr2->pdata, arr2->len, NULL, NULL);
|
||||
return gst_memory_is_span (arr1, len1, arr2, len2, NULL, NULL);
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -966,7 +1037,8 @@ GstBuffer *
|
|||
gst_buffer_span (GstBuffer * buf1, gsize offset, GstBuffer * buf2, gsize len)
|
||||
{
|
||||
GstBuffer *newbuf;
|
||||
GPtrArray *arr1, *arr2;
|
||||
GstMemory **arr1, **arr2;
|
||||
gsize len1, len2;
|
||||
GstMemory *mem;
|
||||
|
||||
g_return_val_if_fail (GST_IS_BUFFER (buf1), NULL);
|
||||
|
|
@ -979,12 +1051,13 @@ gst_buffer_span (GstBuffer * buf1, gsize offset, GstBuffer * buf2, gsize len)
|
|||
|
||||
newbuf = gst_buffer_new ();
|
||||
|
||||
arr1 = GST_BUFFER_MEMORY (buf1);
|
||||
arr2 = GST_BUFFER_MEMORY (buf2);
|
||||
arr1 = GST_BUFFER_MEM_ARRAY (buf1);
|
||||
len1 = GST_BUFFER_MEM_LEN (buf1);
|
||||
arr2 = GST_BUFFER_MEM_ARRAY (buf2);
|
||||
len2 = GST_BUFFER_MEM_LEN (buf2);
|
||||
|
||||
mem = gst_memory_span ((GstMemory **) arr1->pdata, arr1->len, offset,
|
||||
(GstMemory **) arr2->pdata, arr2->len, len);
|
||||
gst_buffer_take_memory (newbuf, mem);
|
||||
mem = gst_memory_span (arr1, len1, offset, arr2, len2, len);
|
||||
_memory_add (newbuf, mem);
|
||||
|
||||
#if 0
|
||||
/* if the offset is 0, the new buffer has the same timestamp as buf1 */
|
||||
|
|
|
|||
|
|
@ -265,14 +265,13 @@ struct _GstBuffer {
|
|||
|
||||
/*< public >*/ /* with COW */
|
||||
GstBufferPool *pool;
|
||||
/* the media type of this buffer */
|
||||
GstCaps *caps;
|
||||
|
||||
/* timestamp */
|
||||
GstClockTime timestamp;
|
||||
GstClockTime duration;
|
||||
|
||||
/* the media type of this buffer */
|
||||
GstCaps *caps;
|
||||
|
||||
/* media specific offset */
|
||||
guint64 offset;
|
||||
guint64 offset_end;
|
||||
|
|
|
|||
Loading…
Reference in a new issue