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glmemory: Use fallback for partial copy

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When the memory is partial copy, the texture size and videoinfo no
longer make sense. As we cannot guess what the application wants, we
safely copy into a sysmem memory.

https://bugzilla.gnome.org/show_bug.cgi?id=744246
This commit is contained in:
Nicolas Dufresne 2015-02-28 11:55:26 -05:00 committed by Tim-Philipp Müller
parent de79830b05
commit 33050939ff
2 changed files with 19 additions and 3 deletions
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21
gst-libs/gst/gl/gstglmemory.c
View file

@ -1038,12 +1038,18 @@ error:
static GstMemory *
_gl_mem_copy (GstGLMemory * src, gssize offset, gssize size)
{
GstGLMemory *dest;
GstGLAllocator *allocator = (GstGLAllocator *) src->mem.allocator;
GstMemory *ret = NULL;
g_mutex_lock (&((GstGLMemory *) src)->lock);
if (GST_GL_MEMORY_FLAG_IS_SET (src, GST_GL_MEMORY_FLAG_NEED_UPLOAD)) {
/* If not doing a full copy, then copy to sysmem, the 2D represention of the
* texture would become wrong */
if (offset > 0 || size < src->mem.size) {
ret = allocator->fallback_mem_copy (&src->mem, offset, size);
} else if (GST_GL_MEMORY_FLAG_IS_SET (src, GST_GL_MEMORY_FLAG_NEED_UPLOAD)) {
GstAllocationParams params = { 0, src->mem.align, 0, 0 };
GstGLMemory *dest;
dest = _gl_mem_new (src->mem.allocator, NULL, src->context, &params,
&src->info, &src->valign, src->plane, NULL, NULL);
@ -1057,9 +1063,11 @@ _gl_mem_copy (GstGLMemory * src, gssize offset, gssize size)
memcpy (dest->data, (guint8 *) src->data + src->mem.offset, src->mem.size);
GST_GL_MEMORY_FLAG_SET (dest, GST_GL_MEMORY_FLAG_NEED_UPLOAD);
ret = (GstMemory *) dest;
} else {
GstAllocationParams params = { 0, src->mem.align, 0, 0 };
GstGLMemoryCopyParams copy_params;
GstGLMemory *dest;
copy_params.src = src;
copy_params.tex_id = 0;
@ -1085,12 +1093,13 @@ _gl_mem_copy (GstGLMemory * src, gssize offset, gssize size)
dest->tex_target = copy_params.tex_target;
dest = _gl_mem_alloc_data (dest);
GST_GL_MEMORY_FLAG_SET (dest, GST_GL_MEMORY_FLAG_NEED_DOWNLOAD);
ret = (GstMemory *) dest;
}
done:
g_mutex_unlock (&((GstGLMemory *) src)->lock);
return (GstMemory *) dest;
return ret;
}
static GstMemory *
@ -1331,12 +1340,18 @@ gst_gl_allocator_init (GstGLAllocator * allocator)
{
GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
/* Keep the fallback copy function around, we will need it when copying with
* at an offset or smaller size */
allocator->fallback_mem_copy = alloc->mem_copy;
alloc->mem_type = GST_GL_MEMORY_ALLOCATOR;
alloc->mem_map = (GstMemoryMapFunction) _gl_mem_map;
alloc->mem_unmap = (GstMemoryUnmapFunction) _gl_mem_unmap;
alloc->mem_copy = (GstMemoryCopyFunction) _gl_mem_copy;
alloc->mem_share = (GstMemoryShareFunction) _gl_mem_share;
alloc->mem_is_span = (GstMemoryIsSpanFunction) _gl_mem_is_span;
GST_OBJECT_FLAG_SET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC);
}
/**

1
gst-libs/gst/gl/gstglmemory.h
View file

@ -190,6 +190,7 @@ void gst_gl_memory_download_transfer (GstGLMemory * gl_mem);
struct _GstGLAllocator
{
GstAllocator parent;
GstMemoryCopyFunction fallback_mem_copy;
};
/**