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glbuffer: implements GstGLBaseMemory::alloc

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Create GstGLBufferAllocationParams which is subclass of GstGLAllocationParams
This commit is contained in:
Matthew Waters 2015-12-16 18:23:31 +11:00 committed by Tim-Philipp Müller
parent 8e79ad3248
commit 9d862cb83f
2 changed files with 84 additions and 1 deletions
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67
gst-libs/gst/gl/gstglbuffer.c
View file

@ -299,7 +299,7 @@ static GstMemory *
_gl_buffer_alloc (GstAllocator * allocator, gsize size,
GstAllocationParams * params)
{
g_critical ("Need to use gst_gl_buffer_alloc() to allocate from "
g_critical ("Need to use gst_gl_base_memory_alloc() to allocate from "
"this allocator");
return NULL;
@ -313,6 +313,70 @@ _gl_buffer_destroy (GstGLBuffer * mem)
gl->DeleteBuffers (1, &mem->id);
}
static void
_gst_gl_buffer_allocation_params_copy_data (GstGLBufferAllocationParams * src,
GstGLBufferAllocationParams * dest)
{
memset (dest, 0, sizeof (*dest));
gst_gl_allocation_params_copy_data (&src->parent, &dest->parent);
dest->gl_target = src->gl_target;
dest->gl_usage = src->gl_usage;
}
static void
_gst_gl_buffer_allocation_params_free_data (GstGLBufferAllocationParams *
params)
{
gst_gl_allocation_params_free_data (&params->parent);
}
GstGLBufferAllocationParams *
gst_gl_buffer_allocation_params_new (GstGLContext * context, gsize alloc_size,
GstAllocationParams * alloc_params, guint gl_target, guint gl_usage)
{
GstGLBufferAllocationParams *params;
g_return_val_if_fail (GST_IS_GL_CONTEXT (context), NULL);
g_return_val_if_fail (alloc_size > 0, NULL);
params = g_new0 (GstGLBufferAllocationParams, 1);
if (!gst_gl_allocation_params_init (&params->parent, sizeof (*params),
GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_BUFFER |
GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_ALLOC,
(GstGLAllocationParamsCopyFunc)
_gst_gl_buffer_allocation_params_copy_data,
(GstGLAllocationParamsFreeFunc)
_gst_gl_buffer_allocation_params_free_data, context, alloc_size,
alloc_params, NULL, NULL, NULL, 0)) {
g_free (params);
return NULL;
}
params->gl_target = gl_target;
params->gl_usage = gl_usage;
return params;
}
static GstGLBuffer *
_gl_buffer_alloc_mem (GstGLBufferAllocator * allocator,
GstGLBufferAllocationParams * params)
{
guint alloc_flags = params->parent.alloc_flags;
g_return_val_if_fail (alloc_flags &
GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_BUFFER, NULL);
g_return_val_if_fail (alloc_flags & GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_ALLOC,
NULL);
return _gl_buffer_new (GST_ALLOCATOR (allocator), NULL,
params->parent.context, params->gl_target, params->gl_usage,
params->parent.alloc_params, params->parent.alloc_size);
}
G_DEFINE_TYPE (GstGLBufferAllocator, gst_gl_buffer_allocator,
GST_TYPE_GL_BASE_MEMORY_ALLOCATOR);
@ -324,6 +388,7 @@ gst_gl_buffer_allocator_class_init (GstGLBufferAllocatorClass * klass)
gl_base = (GstGLBaseMemoryAllocatorClass *) klass;
gl_base->alloc = (GstGLBaseMemoryAllocatorAllocFunction) _gl_buffer_alloc_mem;
gl_base->create = (GstGLBaseMemoryAllocatorCreateFunction) _gl_buffer_create;
gl_base->map = (GstGLBaseMemoryAllocatorMapFunction) _gl_buffer_map;
gl_base->unmap = (GstGLBaseMemoryAllocatorUnmapFunction) _gl_buffer_unmap;

18
gst-libs/gst/gl/gstglbuffer.h
View file

@ -57,6 +57,24 @@ struct _GstGLBuffer
guint usage_hints; /* XXX: put this in the allocator? */
};
typedef struct _GstGLBufferAllocationParams GstGLBufferAllocationParams;
#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_BUFFER (1 << 4)
struct _GstGLBufferAllocationParams
{
GstGLAllocationParams parent;
guint gl_target;
guint gl_usage;
};
GstGLBufferAllocationParams * gst_gl_buffer_allocation_params_new (GstGLContext * context,
gsize alloc_size,
GstAllocationParams * alloc_params,
guint gl_target,
guint gl_usage);
/**
* GstGLBufferAllocator
*