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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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32bf6f1e09
Improve the mapping between va format and gst format. The new map will be generated dynamically, based on the query result of image format in VA driver. Also consider the ambiguity of RGB color format in LSB mode.
567 lines
19 KiB
C
567 lines
19 KiB
C
/*
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* video-format.h - Video format helpers for 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) 2011-2013 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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/**
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* SECTION:videoformat
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* @short_description: Video format helpers for VA-API
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*/
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#include "sysdeps.h"
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#include "gstvaapicompat.h"
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#include "gstvaapisurface.h"
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#include "video-format.h"
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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# define VIDEO_VA_ENDIANESS VA_MSB_FIRST
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#elif G_BYTE_ORDER == G_LITTLE_ENDIAN
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# define VIDEO_VA_ENDIANESS VA_LSB_FIRST
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#endif
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typedef struct _GstVideoFormatMapMap
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{
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GstVideoFormat format;
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GstVaapiChromaType chroma_type;
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VAImageFormat va_format;
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} GstVideoFormatMap;
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#define VA_BYTE_ORDER_NOT_CARE 0
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#define DEF_YUV(BYTE_ORDER, FORMAT, FOURCC, BPP, SUB) \
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{ G_PASTE(GST_VIDEO_FORMAT_,FORMAT), \
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G_PASTE(GST_VAAPI_CHROMA_TYPE_YUV,SUB), \
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{ VA_FOURCC FOURCC, BYTE_ORDER, BPP, }, }
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#define DEF_RGB(BYTE_ORDER, FORMAT, FOURCC, BPP, DEPTH, R,G,B,A) \
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{ G_PASTE(GST_VIDEO_FORMAT_,FORMAT), \
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G_PASTE(GST_VAAPI_CHROMA_TYPE_RGB,BPP), \
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{ VA_FOURCC FOURCC, BYTE_ORDER, BPP, DEPTH, R, G, B, A }, }
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/* Image formats, listed in HW order preference */
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/* *INDENT-OFF* */
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static const GstVideoFormatMap gst_vaapi_video_default_formats[] = {
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/* LSB and MSB video formats definitions are unclear and ambiguous.
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*
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* For MSB, there is no ambiguity: same order in define, memory and
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* CPU. For example,
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*
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* RGBA is RGBA in memory and RGBA with channel mask R:0xFF0000
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* G:0x00FF0000 B:0x0000FF00 A:0x000000FF in CPU.
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*
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* For LSB, CPU's perspective and memory's perspective are
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* different. For example,
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*
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* RGBA in LSB, from CPU's perspective, it's RGBA order in memory,
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* but when it is stored in memory, because CPU's little
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* endianness, it will be re-ordered, with mask R:0x000000FF
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* G:0x0000FF00 B:0x00FF0000 A:0xFF000000. In other words, from
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* memory's perspective, RGBA LSB is equal as ABGR MSB.
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*
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* These definitions are mixed used all over the media system and we
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* need to correct the mapping form VA video format to GStreamer
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* video format in both manners, especially for RGB format.
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*/
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/* YUV formats */
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DEF_YUV (VA_BYTE_ORDER_NOT_CARE, NV12, ('N', 'V', '1', '2'), 12, 420),
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DEF_YUV (VA_BYTE_ORDER_NOT_CARE, YV12, ('Y', 'V', '1', '2'), 12, 420),
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DEF_YUV (VA_BYTE_ORDER_NOT_CARE, I420, ('I', '4', '2', '0'), 12, 420),
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DEF_YUV (VA_BYTE_ORDER_NOT_CARE, YUY2, ('Y', 'U', 'Y', '2'), 16, 422),
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DEF_YUV (VA_BYTE_ORDER_NOT_CARE, UYVY, ('U', 'Y', 'V', 'Y'), 16, 422),
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DEF_YUV (VA_BYTE_ORDER_NOT_CARE, Y444, ('4', '4', '4', 'P'), 24, 444),
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DEF_YUV (VA_BYTE_ORDER_NOT_CARE, GRAY8, ('Y', '8', '0', '0'), 8, 400),
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DEF_YUV (VA_LSB_FIRST, P010_10LE, ('P', '0', '1', '0'), 24, 420_10BPP),
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/* AYUV is a clear defined format by doc */
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DEF_YUV (VA_LSB_FIRST, VUYA, ('A', 'Y', 'U', 'V'), 32, 444),
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DEF_YUV (VA_BYTE_ORDER_NOT_CARE, Y210, ('Y', '2', '1', '0'), 32, 422_10BPP),
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DEF_YUV (VA_BYTE_ORDER_NOT_CARE, Y410, ('Y', '4', '1', '0'), 32, 444_10BPP),
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/* RGB formats */
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DEF_RGB (VA_LSB_FIRST, ARGB, ('A', 'R', 'G', 'B'), 32, 32, 0x0000ff00,
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0x00ff0000, 0xff000000, 0x000000ff),
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DEF_RGB (VA_LSB_FIRST, ARGB, ('B', 'G', 'R', 'A'), 32, 32, 0x0000ff00,
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0x00ff0000, 0xff000000, 0x000000ff),
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DEF_RGB (VA_MSB_FIRST, ARGB, ('A', 'R', 'G', 'B'), 32, 32, 0x00ff0000,
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0x0000ff00, 0x000000ff, 0xff000000),
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DEF_RGB (VA_LSB_FIRST, xRGB, ('X', 'R', 'G', 'B'), 32, 24, 0x0000ff00,
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0x00ff0000, 0xff000000, 0x00000000),
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DEF_RGB (VA_LSB_FIRST, xRGB, ('B', 'G', 'R', 'X'), 32, 24, 0x0000ff00,
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0x00ff0000, 0xff000000, 0x00000000),
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DEF_RGB (VA_MSB_FIRST, xRGB, ('X', 'R', 'G', 'B'), 32, 24, 0x00ff0000,
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0x0000ff00, 0x000000ff, 0x00000000),
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DEF_RGB (VA_LSB_FIRST, RGBA, ('R', 'G', 'B', 'A'), 32, 32, 0x000000ff,
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0x0000ff00, 0x00ff0000, 0xff000000),
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DEF_RGB (VA_LSB_FIRST, RGBA, ('A', 'B', 'G', 'R'), 32, 32, 0x000000ff,
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0x0000ff00, 0x00ff0000, 0xff000000),
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DEF_RGB (VA_MSB_FIRST, RGBA, ('R', 'G', 'B', 'A'), 32, 32, 0xff000000,
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0x00ff0000, 0x0000ff00, 0x000000ff),
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DEF_RGB (VA_LSB_FIRST, RGBx, ('R', 'G', 'B', 'X'), 32, 24, 0x000000ff,
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0x0000ff00, 0x00ff0000, 0x00000000),
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DEF_RGB (VA_LSB_FIRST, RGBx, ('X', 'B', 'G', 'R'), 32, 24, 0x000000ff,
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0x0000ff00, 0x00ff0000, 0x00000000),
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DEF_RGB (VA_MSB_FIRST, RGBx, ('R', 'G', 'B', 'X'), 32, 24, 0xff000000,
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0x00ff0000, 0x0000ff00, 0x00000000),
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DEF_RGB (VA_LSB_FIRST, ABGR, ('A', 'B', 'G', 'R'), 32, 32, 0xff000000,
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0x00ff0000, 0x0000ff00, 0x000000ff),
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DEF_RGB (VA_LSB_FIRST, ABGR, ('R', 'G', 'B', 'A'), 32, 32, 0xff000000,
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0x00ff0000, 0x0000ff00, 0x000000ff),
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DEF_RGB (VA_MSB_FIRST, ABGR, ('A', 'B', 'G', 'R'), 32, 32, 0x000000ff,
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0x0000ff00, 0x00ff0000, 0xff000000),
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DEF_RGB (VA_LSB_FIRST, xBGR, ('X', 'B', 'G', 'R'), 32, 24, 0xff000000,
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0x00ff0000, 0x0000ff00, 0x00000000),
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DEF_RGB (VA_LSB_FIRST, xBGR, ('R', 'G', 'B', 'X'), 32, 24, 0xff000000,
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0x00ff0000, 0x0000ff00, 0x00000000),
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DEF_RGB (VA_MSB_FIRST, xBGR, ('X', 'B', 'G', 'R'), 32, 24, 0x000000ff,
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0x0000ff00, 0x00ff0000, 0x00000000),
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DEF_RGB (VA_LSB_FIRST, BGRA, ('B', 'G', 'R', 'A'), 32, 32, 0x00ff0000,
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0x0000ff00, 0x000000ff, 0xff000000),
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DEF_RGB (VA_LSB_FIRST, BGRA, ('A', 'R', 'G', 'B'), 32, 32, 0x00ff0000,
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0x0000ff00, 0x000000ff, 0xff000000),
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DEF_RGB (VA_MSB_FIRST, BGRA, ('B', 'G', 'R', 'A'), 32, 32, 0x0000ff00,
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0x00ff0000, 0xff000000, 0x000000ff),
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DEF_RGB (VA_LSB_FIRST, BGRx, ('B', 'G', 'R', 'X'), 32, 24, 0x00ff0000,
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0x0000ff00, 0x000000ff, 0x00000000),
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DEF_RGB (VA_LSB_FIRST, BGRx, ('X', 'R', 'G', 'B'), 32, 24, 0x00ff0000,
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0x0000ff00, 0x000000ff, 0x00000000),
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DEF_RGB (VA_MSB_FIRST, BGRx, ('B', 'G', 'R', 'X'), 32, 24, 0x0000ff00,
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0x00ff0000, 0xff000000, 0x00000000),
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DEF_RGB (VA_BYTE_ORDER_NOT_CARE, RGB16, ('R', 'G', '1', '6'), 16, 16,
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0x0000f800, 0x000007e0, 0x0000001f, 0x00000000),
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DEF_RGB (VA_BYTE_ORDER_NOT_CARE, RGB, ('R', 'G', '2', '4'), 32, 24,
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0x00ff0000, 0x0000ff00, 0x000000ff, 0x00000000),
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{0,}
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};
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/* *INDENT-ON* */
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#undef DEF_RGB
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#undef DEF_YUV
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static GArray *gst_vaapi_video_formats_map;
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static inline gboolean
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va_format_is_rgb (const VAImageFormat * va_format)
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{
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return va_format->depth != 0;
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}
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static inline gboolean
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va_format_is_yuv (const VAImageFormat * va_format)
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{
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return va_format->depth == 0;
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}
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static inline gboolean
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va_format_is_same_rgb (const VAImageFormat * fmt1, const VAImageFormat * fmt2)
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{
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return (fmt1->red_mask == fmt2->red_mask &&
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fmt1->green_mask == fmt2->green_mask &&
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fmt1->blue_mask == fmt2->blue_mask &&
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fmt1->alpha_mask == fmt2->alpha_mask);
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}
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static inline gboolean
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va_format_is_same (const VAImageFormat * fmt1, const VAImageFormat * fmt2)
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{
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if (fmt1->fourcc != fmt2->fourcc)
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return FALSE;
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if (fmt1->byte_order != VA_BYTE_ORDER_NOT_CARE &&
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fmt2->byte_order != VA_BYTE_ORDER_NOT_CARE &&
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fmt1->byte_order != fmt2->byte_order)
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return FALSE;
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return va_format_is_rgb (fmt1) ? va_format_is_same_rgb (fmt1, fmt2) : TRUE;
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}
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static const GstVideoFormatMap *
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get_map_in_default_by_gst_format (GstVideoFormat format)
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{
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const GstVideoFormatMap *m;
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for (m = gst_vaapi_video_default_formats; m->format; m++) {
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if (m->format == format)
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return m;
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}
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return NULL;
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}
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static const GstVideoFormatMap *
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get_map_in_default_by_va_format (const VAImageFormat * va_format)
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{
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const GstVideoFormatMap *m, *n;
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n = NULL;
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for (m = gst_vaapi_video_default_formats; m->format; m++) {
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if (va_format_is_same (&m->va_format, va_format)) {
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/* Should not map to VAImageFormat to same GstVideoFormat */
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g_assert (n == NULL);
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n = m;
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}
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}
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return n;
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}
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static const GstVideoFormatMap *
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get_map_by_gst_format (const GArray * formats, GstVideoFormat format)
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{
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const GstVideoFormatMap *entry;
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guint i;
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for (i = 0; i < formats->len; i++) {
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entry = &g_array_index (formats, GstVideoFormatMap, i);
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if (entry->format == format)
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return entry;
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}
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return NULL;
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}
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static const GstVideoFormatMap *
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get_map_by_va_format (const VAImageFormat * va_format)
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{
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const GArray *formats = gst_vaapi_video_formats_map;
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const GstVideoFormatMap *entry;
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guint i;
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for (i = 0; i < formats->len; i++) {
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entry = &g_array_index (formats, GstVideoFormatMap, i);
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if (va_format_is_same (&entry->va_format, va_format))
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return entry;
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}
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return NULL;
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}
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static guint
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get_fmt_score_in_default (GstVideoFormat format)
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{
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const GstVideoFormatMap *const m = get_map_in_default_by_gst_format (format);
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return m ? (m - &gst_vaapi_video_default_formats[0]) : G_MAXUINT;
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}
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static gint
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video_format_compare_by_score (gconstpointer a, gconstpointer b)
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{
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const GstVideoFormatMap *m1 = (GstVideoFormatMap *) a;
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const GstVideoFormatMap *m2 = (GstVideoFormatMap *) b;
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return ((gint) get_fmt_score_in_default (m1->format) -
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(gint) get_fmt_score_in_default (m2->format));
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}
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/**
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* gst_vaapi_video_format_to_string:
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* @format: a #GstVideoFormat
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*
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* Returns the string representation of the @format argument.
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*
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* Return value: string representation of @format, or %NULL if unknown
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* or unsupported.
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*/
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const gchar *
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gst_vaapi_video_format_to_string (GstVideoFormat format)
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{
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return gst_video_format_to_string (format);
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}
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/**
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* gst_vaapi_video_format_is_rgb:
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* @format: a #GstVideoFormat
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*
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* Checks whether the format is an RGB format.
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*
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* Return value: %TRUE if @format is RGB format
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*/
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gboolean
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gst_vaapi_video_format_is_rgb (GstVideoFormat format)
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{
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const GstVideoFormatMap *const m =
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get_map_by_gst_format (gst_vaapi_video_formats_map, format);
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return m && va_format_is_rgb (&m->va_format);
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}
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/**
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* gst_vaapi_video_format_is_yuv:
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* @format: a #GstVideoFormat
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*
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* Checks whether the format is an YUV format.
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*
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* Return value: %TRUE if @format is YUV format
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*/
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gboolean
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gst_vaapi_video_format_is_yuv (GstVideoFormat format)
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{
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const GstVideoFormatMap *const m =
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get_map_by_gst_format (gst_vaapi_video_formats_map, format);
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return m && va_format_is_yuv (&m->va_format);
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}
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/**
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* gst_vaapi_video_format_from_va_fourcc:
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* @fourcc: a FOURCC value
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*
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* Converts a VA fourcc into the corresponding #GstVideoFormat. If no
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* matching fourcc was found, then zero is returned.
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*
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* Return value: the #GstVideoFormat corresponding to the VA @fourcc
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*/
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GstVideoFormat
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gst_vaapi_video_format_from_va_fourcc (guint32 fourcc)
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{
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const GArray *map = gst_vaapi_video_formats_map;
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const GstVideoFormatMap *m;
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guint i;
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/* Note: VA fourcc values are now standardized and shall represent
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a unique format. The associated VAImageFormat is just a hint to
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determine RGBA component ordering */
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for (i = 0; i < map->len; i++) {
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m = &g_array_index (map, GstVideoFormatMap, i);
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if (m->va_format.fourcc == fourcc)
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return m->format;
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}
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return GST_VIDEO_FORMAT_UNKNOWN;
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}
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/**
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* gst_vaapi_video_format_from_va_format:
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* @va_format: a #VAImageFormat
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*
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* Converts a VA image format into the corresponding #GstVideoFormat.
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* If the image format cannot be represented by #GstVideoFormat,
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* then zero is returned.
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*
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* Return value: the #GstVideoFormat describing the @va_format
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*/
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GstVideoFormat
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gst_vaapi_video_format_from_va_format (const VAImageFormat * va_format)
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{
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const GstVideoFormatMap *const m = get_map_by_va_format (va_format);
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return m ? m->format : GST_VIDEO_FORMAT_UNKNOWN;
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}
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/**
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* gst_vaapi_video_format_to_va_format:
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* @format: a #GstVideoFormat
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*
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* Converts a #GstVideoFormat into the corresponding VA image
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* format. If no matching VA image format was found, %NULL is returned
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* and this error must be reported to be fixed.
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*
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* Return value: the VA image format, or %NULL if none was found
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*/
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const VAImageFormat *
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gst_vaapi_video_format_to_va_format (GstVideoFormat format)
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{
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const GstVideoFormatMap *const m =
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get_map_by_gst_format (gst_vaapi_video_formats_map, format);
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return m ? &m->va_format : NULL;
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}
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/**
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* gst_vaapi_video_format_get_chroma_type:
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* @format: a #GstVideoFormat
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*
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* Converts a #GstVideoFormat into the corresponding #GstVaapiChromaType
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* format.
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*
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* Return value: the #GstVaapiChromaType format, or zero if no match
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* was found.
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*/
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guint
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gst_vaapi_video_format_get_chroma_type (GstVideoFormat format)
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{
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const GstVideoFormatMap *const m =
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get_map_by_gst_format (gst_vaapi_video_formats_map, format);
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return m ? m->chroma_type : 0;
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}
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/**
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* gst_vaapi_video_format_get_score:
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* @format: a #GstVideoFormat
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*
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* Determines how "native" is this @format. The lower is the returned
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* score, the best format this is for the underlying hardware.
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*
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* Return value: the @format score, or %G_MAXUINT if none was found
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*/
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guint
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gst_vaapi_video_format_get_score (GstVideoFormat format)
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{
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return get_fmt_score_in_default (format);
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}
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/**
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* gst_vaapi_video_format_from_chroma:
|
|
* @chroma_type: a #GstVaapiChromaType
|
|
*
|
|
* Returns the "preferred" pixel format that matches with
|
|
* @chroma_type.
|
|
*
|
|
* Returns: the preferred pixel format for @chroma_type
|
|
**/
|
|
GstVideoFormat
|
|
gst_vaapi_video_format_from_chroma (guint chroma_type)
|
|
{
|
|
switch (chroma_type) {
|
|
case GST_VAAPI_CHROMA_TYPE_YUV422:
|
|
return GST_VIDEO_FORMAT_YUY2;
|
|
case GST_VAAPI_CHROMA_TYPE_YUV400:
|
|
return GST_VIDEO_FORMAT_GRAY8;
|
|
case GST_VAAPI_CHROMA_TYPE_YUV420:
|
|
case GST_VAAPI_CHROMA_TYPE_RGB32: /* GstVideoGLTextureUploadMeta */
|
|
return GST_VIDEO_FORMAT_NV12;
|
|
case GST_VAAPI_CHROMA_TYPE_YUV420_10BPP:
|
|
return GST_VIDEO_FORMAT_P010_10LE;
|
|
case GST_VAAPI_CHROMA_TYPE_YUV444:
|
|
return GST_VIDEO_FORMAT_AYUV;
|
|
case GST_VAAPI_CHROMA_TYPE_YUV422_10BPP:
|
|
return GST_VIDEO_FORMAT_Y210;
|
|
case GST_VAAPI_CHROMA_TYPE_YUV444_10BPP:
|
|
return GST_VIDEO_FORMAT_Y410;
|
|
default:
|
|
return GST_VIDEO_FORMAT_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_vaapi_video_format_get_best_native:
|
|
* @format: a #GstVideoFormat
|
|
*
|
|
* Returns the best "native" pixel format that matches a particular
|
|
* color-space.
|
|
*
|
|
* Returns: the #GstVideoFormat with the corresponding best native
|
|
* format for #GstVaapiSurface
|
|
**/
|
|
GstVideoFormat
|
|
gst_vaapi_video_format_get_best_native (GstVideoFormat format)
|
|
{
|
|
GstVaapiChromaType chroma_type;
|
|
|
|
if (format == GST_VIDEO_FORMAT_ENCODED)
|
|
return GST_VIDEO_FORMAT_NV12;
|
|
chroma_type = gst_vaapi_video_format_get_chroma_type (format);
|
|
return gst_vaapi_video_format_from_chroma (chroma_type);
|
|
}
|
|
|
|
struct ImageFormatsData
|
|
{
|
|
VAImageFormat *formats;
|
|
guint n;
|
|
};
|
|
|
|
static gpointer
|
|
video_format_create_map_once (gpointer data)
|
|
{
|
|
const GstVideoFormatMap *src_entry, *entry;
|
|
guint i;
|
|
VAImageFormat *formats = ((struct ImageFormatsData *) data)->formats;
|
|
guint n = ((struct ImageFormatsData *) data)->n;
|
|
GArray *array = NULL;
|
|
|
|
if (formats == NULL || n == 0)
|
|
return NULL;
|
|
|
|
array = g_array_new (FALSE, TRUE, sizeof (GstVideoFormatMap));
|
|
if (array == NULL)
|
|
return NULL;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
src_entry = get_map_in_default_by_va_format (&formats[i]);
|
|
if (src_entry) {
|
|
entry = get_map_by_gst_format (array, src_entry->format);
|
|
if (entry && !va_format_is_same (&entry->va_format, &formats[i])) {
|
|
GST_INFO ("va_format1 with fourcc %" GST_FOURCC_FORMAT
|
|
" byte order: %d, BPP: %d, depth %d, red mask 0x%4x,"
|
|
" green mask 0x%4x, blue mask 0x%4x, alpha mask 0x%4x"
|
|
" conflict with va_foramt2 fourcc %" GST_FOURCC_FORMAT
|
|
" byte order: %d, BPP: %d, depth %d, red mask 0x%4x,"
|
|
" green mask 0x%4x, blue mask 0x%4x, alpha mask 0x%4x."
|
|
" Both map to the same GST format: %s, which is not"
|
|
" allowed, va_format1 will be skipped",
|
|
GST_FOURCC_ARGS (entry->va_format.fourcc),
|
|
entry->va_format.byte_order, entry->va_format.bits_per_pixel,
|
|
entry->va_format.depth, entry->va_format.red_mask,
|
|
entry->va_format.green_mask, entry->va_format.blue_mask,
|
|
entry->va_format.alpha_mask,
|
|
GST_FOURCC_ARGS (formats[i].fourcc),
|
|
formats[i].byte_order, formats[i].bits_per_pixel, formats[i].depth,
|
|
formats[i].red_mask, formats[i].green_mask, formats[i].blue_mask,
|
|
formats[i].alpha_mask, gst_video_format_to_string (entry->format));
|
|
continue;
|
|
}
|
|
g_array_append_val (array, (*src_entry));
|
|
}
|
|
|
|
if (va_format_is_rgb (&formats[i])) {
|
|
GST_LOG ("%s to map RGB va_format with fourcc: %"
|
|
GST_FOURCC_FORMAT
|
|
", byte order: %d BPP: %d, depth %d, red mask %4x,"
|
|
" green mask %4x, blue mask %4x, alpha mask %4x to %s gstreamer"
|
|
" video format", src_entry ? "succeed" : "failed",
|
|
GST_FOURCC_ARGS (formats[i].fourcc), formats[i].byte_order,
|
|
formats[i].bits_per_pixel, formats[i].depth, formats[i].red_mask,
|
|
formats[i].green_mask, formats[i].blue_mask, formats[i].alpha_mask,
|
|
src_entry ? gst_video_format_to_string (src_entry->format) : "any");
|
|
} else {
|
|
GST_LOG ("%s to map YUV va format with fourcc: %"
|
|
GST_FOURCC_FORMAT ", byte order: %d BPP: %d to %s gstreamer"
|
|
" video format", src_entry ? "succeed" : "failed",
|
|
GST_FOURCC_ARGS (formats[i].fourcc), formats[i].byte_order,
|
|
formats[i].bits_per_pixel,
|
|
src_entry ? gst_video_format_to_string (src_entry->format) : "any");
|
|
}
|
|
}
|
|
|
|
g_array_sort (array, video_format_compare_by_score);
|
|
gst_vaapi_video_formats_map = array;
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* gst_vaapi_video_format_new_map:
|
|
* @formats: all #VAImageFormat need to map
|
|
* @n: the number of VAImageFormat
|
|
*
|
|
* Return: True if create successfully.
|
|
**/
|
|
gboolean
|
|
gst_vaapi_video_format_create_map (VAImageFormat * formats, guint n)
|
|
{
|
|
static GOnce once = G_ONCE_INIT;
|
|
struct ImageFormatsData data = { formats, n };
|
|
|
|
g_once (&once, video_format_create_map_once, &data);
|
|
|
|
return once.retval != NULL;
|
|
}
|