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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-02-22 22:16:22 +00:00
glbasememory: add a generic interface for allocating GL memories
This is made possible by a subclassable GstGLAllocationParams that holds the allocation parameters Every allocation would now go through gst_gl_base_memory_alloc with the allocation parameters now being specified in a single struct to allow extension by different allocators.
This commit is contained in:
Matthew Waters
Tim-Philipp Müller
parent
4cb42d34c6
commit
93215927a9
2 changed files with 212 additions and 5 deletions
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@ -505,3 +505,139 @@ gst_gl_base_memory_memcpy (GstGLBaseMemory * src, GstGLBaseMemory * dest,
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return TRUE;
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}
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/**
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* gst_gl_allocation_params_init:
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* @params: the #GstGLAllocationParams to initialize
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* @struct_size: the struct size of the implementation
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* @alloc: some alloc flags
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* @copy: a copy function
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* @free: a free function
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* @context: (transfer none): a #GstGLContext
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* @alloc_size: the number of bytes to allocate.
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* @alloc_params: (transfer none) (allow-none): a #GstAllocationParams to apply
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* @notify: (allow-none): a #GDestroyNotify
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* @user_data: (transfer none) (allow-none): user data to call @notify with
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* @wrapped_data: (transfer none) (allow-none): a sysmem data pointer to initialize the allocation with
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* @gl_handle: (transfer none): a GL handle to initialize the allocation with
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*
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* @notify will be called once for each allocated memory using these @params
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* when freeing the memory.
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*
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* Returns: whether the paramaters could be initialized
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*/
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gboolean
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gst_gl_allocation_params_init (GstGLAllocationParams * params,
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gsize struct_size, guint alloc_flags, GstGLAllocationParamsCopyFunc copy,
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GstGLAllocationParamsFreeFunc free, GstGLContext * context,
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gsize alloc_size, GstAllocationParams * alloc_params,
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GDestroyNotify notify, gpointer user_data, gpointer wrapped_data,
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guint gl_handle)
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{
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memset (params, 0, sizeof (*params));
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g_return_val_if_fail (struct_size > 0, FALSE);
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g_return_val_if_fail (copy != NULL, FALSE);
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g_return_val_if_fail (free != NULL, FALSE);
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g_return_val_if_fail (GST_IS_GL_CONTEXT (context), FALSE);
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params->struct_size = struct_size;
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params->alloc_size = alloc_size;
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params->copy = copy;
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params->free = free;
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params->alloc_flags = alloc_flags;
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params->context = gst_object_ref (context);
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if (alloc_params)
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params->alloc_params = gst_allocation_params_copy (alloc_params);
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params->notify = notify;
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params->user_data = user_data;
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params->wrapped_data = wrapped_data;
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params->gl_handle = gl_handle;
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return TRUE;
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}
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/**
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* gst_gl_allocation_params_copy:
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* @src: the #GstGLAllocationParams to initialize
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*
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* Returns: a copy of the #GstGLAllocationParams specified by @src or %NULL on
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* failure
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*/
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GstGLAllocationParams *
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gst_gl_allocation_params_copy (GstGLAllocationParams * src)
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{
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GstGLAllocationParams *dest;
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g_return_val_if_fail (src != NULL, NULL);
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dest = g_malloc0 (src->struct_size);
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if (src->copy)
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src->copy (src, dest);
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return dest;
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}
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/**
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* gst_gl_allocation_params_free:
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* @params: the #GstGLAllocationParams to initialize
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*
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* Frees the #GstGLAllocationParams and all associated data.
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*/
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void
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gst_gl_allocation_params_free (GstGLAllocationParams * params)
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{
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if (params->free)
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params->free (params);
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g_free (params);
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}
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void
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gst_gl_allocation_params_free_data (GstGLAllocationParams * params)
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{
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if (params->context)
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gst_object_unref (params->context);
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if (params->alloc_params)
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gst_allocation_params_free (params->alloc_params);
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}
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void
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gst_gl_allocation_params_copy_data (GstGLAllocationParams * src,
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GstGLAllocationParams * dest)
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{
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gst_gl_allocation_params_init (dest, src->struct_size, src->alloc_flags,
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src->copy, src->free, NULL, src->alloc_size, NULL, src->notify,
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src->user_data, src->wrapped_data, src->gl_handle);
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if (src->context)
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dest->context = gst_object_ref (src->context);
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if (src->alloc_params)
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dest->alloc_params = gst_allocation_params_copy (src->alloc_params);
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}
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G_DEFINE_BOXED_TYPE (GstGLAllocationParams, gst_gl_allocation_params,
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(GBoxedCopyFunc) gst_gl_allocation_params_copy,
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(GBoxedFreeFunc) gst_gl_allocation_params_free);
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/**
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* gst_gl_base_memory_alloc:
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* @allocator: a #GstGLBaseMemoryAllocator
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* @params: the #GstGLAllocationParams to allocate the memory with
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*
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* Returns: a new #GstGLBaseMemory from @allocator with the requested @params.
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*/
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GstGLBaseMemory *
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gst_gl_base_memory_alloc (GstGLBaseMemoryAllocator * allocator,
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GstGLAllocationParams * params)
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{
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GstGLBaseMemoryAllocatorClass *alloc_class;
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alloc_class = GST_GL_BASE_MEMORY_ALLOCATOR_GET_CLASS (allocator);
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g_return_val_if_fail (alloc_class != NULL, NULL);
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g_return_val_if_fail (alloc_class->alloc != NULL, NULL);
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return alloc_class->alloc (allocator, params);
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}
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@ -97,11 +97,77 @@ struct _GstGLBaseMemory
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gpointer user_data;
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};
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typedef gboolean (*GstGLBaseMemoryAllocatorCreateFunction) (GstGLBaseMemory * mem, GError ** error);
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typedef gpointer (*GstGLBaseMemoryAllocatorMapFunction) (GstGLBaseMemory * mem, GstMapInfo * info, gsize maxsize);
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typedef void (*GstGLBaseMemoryAllocatorUnmapFunction) (GstGLBaseMemory * mem, GstMapInfo * info);
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typedef GstGLBaseMemory * (*GstGLBaseMemoryAllocatorCopyFunction) (GstGLBaseMemory * mem, gssize offset, gssize size);
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typedef void (*GstGLBaseMemoryAllocatorDestroyFunction) (GstGLBaseMemory * mem);
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typedef struct _GstGLAllocationParams GstGLAllocationParams;
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/* subclass has to compose with the parent class */
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typedef void (*GstGLAllocationParamsCopyFunc) (GstGLAllocationParams * src, GstGLAllocationParams * dest);
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/* subclass has to compose with the parent class */
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typedef void (*GstGLAllocationParamsFreeFunc) (gpointer params);
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#define GST_TYPE_GL_ALLOCATION_PARAMS (gst_gl_allocation_params_get_type())
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GType gst_gl_allocation_params_get_type (void);
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_ALLOC (1 << 0)
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_SYSMEM (1 << 1)
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE (1 << 2)
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#define GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_USER (1 << 16)
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/* Because GstAllocationParams is not subclassable, start our own subclass
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* chain. FIXME: 2.0 make GstAllocationParams subclassable */
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struct _GstGLAllocationParams
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{
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gsize struct_size;
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GstGLAllocationParamsCopyFunc copy;
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GstGLAllocationParamsFreeFunc free;
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guint alloc_flags;
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gsize alloc_size;
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GstAllocationParams *alloc_params;
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GstGLContext *context;
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GDestroyNotify notify;
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gpointer user_data;
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/* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_SYSMEM only */
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gpointer wrapped_data;
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/* GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE only */
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guint gl_handle;
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};
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gboolean gst_gl_allocation_params_init (GstGLAllocationParams * params,
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gsize struct_size,
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guint alloc_flags,
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GstGLAllocationParamsCopyFunc copy,
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GstGLAllocationParamsFreeFunc free,
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GstGLContext * context,
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gsize alloc_size,
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GstAllocationParams * alloc_params,
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GDestroyNotify notify,
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gpointer user_data,
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gpointer wrapped_data,
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guint gl_handle);
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/* free with gst_gl_allocation_params_free */
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GstGLAllocationParams * gst_gl_allocation_params_copy (GstGLAllocationParams * src);
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void gst_gl_allocation_params_free (GstGLAllocationParams * params);
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/* subclass usage */
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void gst_gl_allocation_params_free_data (GstGLAllocationParams * params);
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/* subclass usage */
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void gst_gl_allocation_params_copy_data (GstGLAllocationParams * src,
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GstGLAllocationParams * dest);
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typedef GstGLBaseMemory * (*GstGLBaseMemoryAllocatorAllocFunction) (GstGLBaseMemoryAllocator * allocator,
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GstGLAllocationParams * params);
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typedef gboolean (*GstGLBaseMemoryAllocatorCreateFunction) (GstGLBaseMemory * mem,
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GError ** error);
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typedef gpointer (*GstGLBaseMemoryAllocatorMapFunction) (GstGLBaseMemory * mem,
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GstMapInfo * info,
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gsize maxsize);
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typedef void (*GstGLBaseMemoryAllocatorUnmapFunction) (GstGLBaseMemory * mem,
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GstMapInfo * info);
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typedef GstGLBaseMemory * (*GstGLBaseMemoryAllocatorCopyFunction) (GstGLBaseMemory * mem,
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gssize offset,
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gssize size);
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typedef void (*GstGLBaseMemoryAllocatorDestroyFunction) (GstGLBaseMemory * mem);
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/**
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* GstGLBaseMemoryAllocator
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@ -123,6 +189,8 @@ struct _GstGLBaseMemoryAllocatorClass
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{
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GstAllocatorClass parent_class;
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GstGLBaseMemoryAllocatorAllocFunction alloc;
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GstGLBaseMemoryAllocatorCreateFunction create;
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GstGLBaseMemoryAllocatorMapFunction map;
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#if 0
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@ -161,6 +229,9 @@ gboolean gst_gl_base_memory_memcpy (GstGLBaseMemory * src,
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gssize offset,
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gssize size);
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GstGLBaseMemory * gst_gl_base_memory_alloc (GstGLBaseMemoryAllocator * allocator,
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GstGLAllocationParams * params);
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G_END_DECLS
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#endif /* _GST_GL_BUFFER_H_ */
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