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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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850a637d0f
Only expose the exact static set of supported rate-control properties to the upper layer. For instance, if the GstVaapiEncoderXXX class does only support CQP rate control, then only add it the the exposed enum type. Add helper macros and functions to build a GType for an enum subset.
162 lines
5 KiB
C
162 lines
5 KiB
C
/*
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* gstvaapivalue.h - GValue implementations specific to VA-API
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*
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* Copyright (C) 2010-2011 Splitted-Desktop Systems
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* Author: Gwenole Beauchesne <gwenole.beauchesne@splitted-desktop.com>
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* Copyright (C) 2012-2013 Intel Corporation
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* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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#ifndef GST_VAAPI_VALUE_H
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#define GST_VAAPI_VALUE_H
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#include <glib-object.h>
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#include <gst/vaapi/gstvaapitypes.h>
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G_BEGIN_DECLS
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/**
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* GST_VAAPI_TYPE_POINT:
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*
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* A #GstVaapiPoint type that represents a 2D point coordinates.
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*
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* Return value: the GType of #GstVaapiPoint
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*/
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#define GST_VAAPI_TYPE_POINT gst_vaapi_point_get_type()
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/**
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* GST_VAAPI_TYPE_RECTANGLE:
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*
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* A #GstVaapiRectangle type that represents a 2D rectangle position
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* and size.
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*
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* Return value: the GType of #GstVaapiRectangle
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*/
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#define GST_VAAPI_TYPE_RECTANGLE gst_vaapi_rectangle_get_type()
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/**
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* GST_VAAPI_TYPE_RENDER_MODE:
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*
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* A #GstVaapiRenderMode type that represents the VA display backend
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* rendering mode: overlay (2D engine) or textured-blit (3D engine).
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*
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* Return value: the #GType of GstVaapiRenderMode
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*/
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#define GST_VAAPI_TYPE_RENDER_MODE gst_vaapi_render_mode_get_type()
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/**
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* GST_VAAPI_TYPE_ROTATION:
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*
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* A type that represents the VA display rotation.
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*
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* Return value: the #GType of GstVaapiRotation
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*/
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#define GST_VAAPI_TYPE_ROTATION gst_vaapi_rotation_get_type()
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/**
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* GST_VAAPI_TYPE_RATE_CONTROL:
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*
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* A type that represents the VA rate control.
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*
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* Return value: the #GType of GstVaapiRateControl
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*/
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#define GST_VAAPI_TYPE_RATE_CONTROL gst_vaapi_rate_control_get_type()
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GType
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gst_vaapi_point_get_type(void) G_GNUC_CONST;
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GType
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gst_vaapi_rectangle_get_type(void) G_GNUC_CONST;
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GType
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gst_vaapi_render_mode_get_type(void) G_GNUC_CONST;
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GType
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gst_vaapi_rotation_get_type(void) G_GNUC_CONST;
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GType
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gst_vaapi_rate_control_get_type(void) G_GNUC_CONST;
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/**
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* GST_VAAPI_POPCOUNT32:
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* @x: the value from which to compute population count
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*
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* Computes the number of bits set in the supplied 32-bit value @x.
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*
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* Return value: the number of bits set in @x
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*/
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#define GST_VAAPI_POPCOUNT32(x) \
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GST_VAAPI_POPCOUNT32_0(x)
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#define GST_VAAPI_POPCOUNT32_0(x) \
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GST_VAAPI_POPCOUNT32_1((x) - (((x) >> 1) & 0x55555555))
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#define GST_VAAPI_POPCOUNT32_1(x) \
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GST_VAAPI_POPCOUNT32_2(((x) & 0x33333333) + (((x) >> 2) & 0x33333333))
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#define GST_VAAPI_POPCOUNT32_2(x) \
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GST_VAAPI_POPCOUNT32_3((x) + ((x) >> 4))
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#define GST_VAAPI_POPCOUNT32_3(x) \
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GST_VAAPI_POPCOUNT32_4((x) & 0x0f0f0f0f)
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#define GST_VAAPI_POPCOUNT32_4(x) \
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(((x) * 0x01010101) >> 24)
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/* --- GstVaapiEnumSubset --- */
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/**
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* GstVaapiEnumSubset:
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* @name: name of the enum subset
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* @parent_type: parent enum type
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* @type: registered #GType
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* @type_info: #GTypeInfo used to build the @type
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* @values: pointer to a static array of #GEnumValue elements
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* @num_values: number of elements in the @values array, including the
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* terminator
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*
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* Structure that holds the required information to build a GEnum
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* subset from the supplied @parent_type, i.e. a subset of its values.
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*/
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typedef struct {
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GType parent_type;
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GType type;
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GTypeInfo type_info;
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const gchar *type_name;
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GEnumValue *values;
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guint num_values;
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} GstVaapiEnumSubset;
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G_GNUC_INTERNAL
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GType
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gst_vaapi_type_define_enum_subset_from_mask(GstVaapiEnumSubset *subset,
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guint32 mask);
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#define GST_VAAPI_TYPE_DEFINE_ENUM_SUBSET_FROM_MASK(NAME, name, TYPE, MASK) \
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static GType \
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G_PASTE(name,_get_type)(void) \
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{ \
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static GEnumValue enum_values[GST_VAAPI_POPCOUNT32(MASK) + 1]; \
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static GstVaapiEnumSubset subset = { \
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.type_name = G_STRINGIFY(NAME), \
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.values = enum_values, \
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.num_values = G_N_ELEMENTS(enum_values), \
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}; \
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if (g_once_init_enter(&subset.parent_type)) \
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g_once_init_leave(&subset.parent_type, TYPE); \
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return gst_vaapi_type_define_enum_subset_from_mask(&subset, MASK); \
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}
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G_END_DECLS
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#endif /* GST_VAAPI_VALUE_H */
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