mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 13:41:48 +00:00
6accb7a1f5
The current way of using gst_video_info_set_format() will change all fields of the GstVideoInfo. We only need to change its format, stride and offset fields. In order to keep the consistency with th common drm API, we rename the gst_va_video_info_from_dma_info() into gst_va_dma_drm_info_to_video_info(). Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4883>
506 lines
16 KiB
C
506 lines
16 KiB
C
/* GStreamer
|
|
* Copyright (C) 2020 Igalia, S.L.
|
|
* Author: Víctor Jáquez <vjaquez@igalia.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstvavideoformat.h"
|
|
#ifndef G_OS_WIN32
|
|
#include <libdrm/drm_fourcc.h>
|
|
#endif
|
|
|
|
#define GST_CAT_DEFAULT gst_va_display_debug
|
|
GST_DEBUG_CATEGORY_EXTERN (gst_va_display_debug);
|
|
|
|
#define VA_NSB_FIRST 0 /* No Significant Bit */
|
|
|
|
/* *INDENT-OFF* */
|
|
static struct FormatMap
|
|
{
|
|
GstVideoFormat format;
|
|
guint va_rtformat;
|
|
VAImageFormat va_format;
|
|
/* The drm fourcc may have different definition from VA */
|
|
guint drm_fourcc;
|
|
} format_map[] = {
|
|
#ifndef G_OS_WIN32
|
|
#define F(format, drm, fourcc, rtformat, order, bpp, depth, r, g, b, a) { \
|
|
G_PASTE (GST_VIDEO_FORMAT_, format), \
|
|
G_PASTE (VA_RT_FORMAT_, rtformat), \
|
|
{ VA_FOURCC fourcc, G_PASTE (G_PASTE (VA_, order), _FIRST), \
|
|
bpp, depth, r, g, b, a }, G_PASTE (DRM_FORMAT_, drm) }
|
|
#else
|
|
#define F(format, drm, fourcc, rtformat, order, bpp, depth, r, g, b, a) { \
|
|
G_PASTE (GST_VIDEO_FORMAT_, format), \
|
|
G_PASTE (VA_RT_FORMAT_, rtformat), \
|
|
{ VA_FOURCC fourcc, G_PASTE (G_PASTE (VA_, order), _FIRST), \
|
|
bpp, depth, r, g, b, a }, 0 /* DRM_FORMAT_INVALID */ }
|
|
#endif
|
|
#define G(format, drm, fourcc, rtformat, order, bpp) \
|
|
F (format, drm, fourcc, rtformat, order, bpp, 0, 0, 0 ,0, 0)
|
|
G (NV12, NV12, ('N', 'V', '1', '2'), YUV420, NSB, 12),
|
|
G (NV21, NV21, ('N', 'V', '2', '1'), YUV420, NSB, 21),
|
|
G (VUYA, AYUV, ('A', 'Y', 'U', 'V'), YUV444, LSB, 32),
|
|
F (RGBA, RGBA8888, ('R', 'G', 'B', 'A'), RGB32, LSB, 32, 32, 0x000000ff,
|
|
0x0000ff00, 0x00ff0000, 0xff000000),
|
|
F (RGBx, RGBX8888, ('R', 'G', 'B', 'X'), RGB32, LSB, 32, 24, 0x000000ff,
|
|
0x0000ff00, 0x00ff0000, 0x00000000),
|
|
F (BGRA, BGRA8888, ('B', 'G', 'R', 'A'), RGB32, LSB, 32, 32, 0x00ff0000,
|
|
0x0000ff00, 0x000000ff, 0xff000000),
|
|
F (ARGB, ARGB8888, ('A', 'R', 'G', 'B'), RGB32, LSB, 32, 32, 0x0000ff00,
|
|
0x00ff0000, 0xff000000, 0x000000ff),
|
|
F (xRGB, XRGB8888, ('X', 'R', 'G', 'B'), RGB32, LSB, 32, 24, 0x0000ff00,
|
|
0x00ff0000, 0xff000000, 0x00000000),
|
|
F (ABGR, ABGR8888, ('A', 'B', 'G', 'R'), RGB32, LSB, 32, 32, 0xff000000,
|
|
0x00ff0000, 0x0000ff00, 0x000000ff),
|
|
F (xBGR, XBGR8888, ('X', 'B', 'G', 'R'), RGB32, LSB, 32, 24, 0xff000000,
|
|
0x00ff0000, 0x0000ff00, 0x00000000),
|
|
F (BGRx, BGRX8888, ('B', 'G', 'R', 'X'), RGB32, LSB, 32, 24, 0x00ff0000,
|
|
0x0000ff00, 0x000000ff, 0x00000000),
|
|
G (UYVY, UYVY, ('U', 'Y', 'V', 'Y'), YUV422, NSB, 16),
|
|
G (YUY2, YUYV, ('Y', 'U', 'Y', '2'), YUV422, NSB, 16),
|
|
G (AYUV, AYUV, ('A', 'Y', 'U', 'V'), YUV444, LSB, 32),
|
|
/* F (????, NV11), */
|
|
G (YV12, YVU420, ('Y', 'V', '1', '2'), YUV420, NSB, 12),
|
|
/* F (????, P208), */
|
|
G (I420, YUV420, ('I', '4', '2', '0'), YUV420, NSB, 12),
|
|
/* F (????, YV24), */
|
|
/* F (????, YV32), */
|
|
/* F (????, Y800), */
|
|
/* F (????, IMC3), */
|
|
/* F (????, 411P), */
|
|
/* F (????, 411R), */
|
|
G (Y42B, YUV422, ('4', '2', '2', 'H'), YUV422, LSB, 16),
|
|
/* F (????, 422V), */
|
|
/* F (????, 444P), */
|
|
/* No RGBP support in drm fourcc */
|
|
G (RGBP, INVALID, ('R', 'G', 'B', 'P'), RGBP, LSB, 8),
|
|
/* F (????, BGRP), */
|
|
/* F (????, RGB565), */
|
|
/* F (????, BGR565), */
|
|
G (Y210, Y210, ('Y', '2', '1', '0'), YUV422_10, NSB, 32),
|
|
/* F (????, Y216), */
|
|
G (Y410, Y410, ('Y', '4', '1', '0'), YUV444_10, NSB, 32),
|
|
G (Y212_LE, Y212, ('Y', '2', '1', '2'), YUV422_12, NSB, 32),
|
|
G (Y412_LE, Y412, ('Y', '4', '1', '2'), YUV444_12, NSB, 32),
|
|
/* F (????, Y416), */
|
|
/* F (????, YV16), */
|
|
G (P010_10LE, P010, ('P', '0', '1', '0'), YUV420_10, NSB, 24),
|
|
G (P012_LE, P012, ('P', '0', '1', '2'), YUV420_12, NSB, 24),
|
|
/* F (P016_LE, P016, ????), */
|
|
/* F (????, I010), */
|
|
/* F (????, IYUV), */
|
|
/* F (????, A2R10G10B10), */
|
|
/* F (????, A2B10G10R10), */
|
|
/* F (????, X2R10G10B10), */
|
|
/* F (????, X2B10G10R10), */
|
|
/* No GRAY8 support in drm fourcc */
|
|
G (GRAY8, INVALID, ('Y', '8', '0', '0'), YUV400, NSB, 8),
|
|
G (Y444, YUV444, ('4', '4', '4', 'P'), YUV444, NSB, 24),
|
|
/* F (????, Y16), */
|
|
/* G (VYUY, VYUY, YUV422), */
|
|
/* G (YVYU, YVYU, YUV422), */
|
|
/* F (ARGB64, ARGB64, ????), */
|
|
/* F (????, ABGR64), */
|
|
F (RGB16, RGB565, ('R', 'G', '1', '6'), RGB16, NSB, 16, 16, 0x0000f800,
|
|
0x000007e0, 0x0000001f, 0x00000000),
|
|
F (RGB, RGB888, ('R', 'G', '2', '4'), RGB32, NSB, 32, 24, 0x00ff0000,
|
|
0x0000ff00, 0x000000ff, 0x00000000),
|
|
F (BGR10A2_LE, ARGB2101010, ('A', 'R', '3', '0'), RGB32, LSB, 32, 30,
|
|
0x3ff00000, 0x000ffc00, 0x000003ff, 0x30000000),
|
|
#undef F
|
|
#undef G
|
|
};
|
|
|
|
static const struct RBG32FormatMap
|
|
{
|
|
GstVideoFormat format;
|
|
guint drm_fourcc;
|
|
VAImageFormat va_format[2];
|
|
} rgb32_format_map[] = {
|
|
#define F(fourcc, order, bpp, depth, r, g, b, a) \
|
|
{ VA_FOURCC fourcc, G_PASTE (G_PASTE (VA_, order), _FIRST), bpp, depth, r, g, b, a }
|
|
#define A(fourcc, order, r, g, b, a) F (fourcc, order, 32, 32, r, g, b, a)
|
|
#define X(fourcc, order, r, g, b) F (fourcc, order, 32, 24, r, g, b, 0x0)
|
|
#ifndef G_OS_WIN32
|
|
#define D(format, drm_fourcc) G_PASTE (GST_VIDEO_FORMAT_, format), G_PASTE (DRM_FORMAT_, drm_fourcc)
|
|
#else
|
|
#define D(format, drm_fourcc) G_PASTE (GST_VIDEO_FORMAT_, format), 0 /* DRM_FORMAT_INVALID */
|
|
#endif
|
|
{ D (ARGB, BGRA8888), {
|
|
A (('B', 'G', 'R', 'A'), LSB, 0x0000ff00, 0x00ff0000, 0xff000000, 0x000000ff),
|
|
A (('A', 'R', 'G', 'B'), MSB, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000),
|
|
} },
|
|
{ D (RGBA, ABGR8888), {
|
|
A (('A', 'B', 'G', 'R'), LSB, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000),
|
|
A (('R', 'G', 'B', 'A'), MSB, 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff),
|
|
} },
|
|
{ D (ABGR, RGBA8888), {
|
|
A (('R', 'G', 'B', 'A'), LSB, 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff),
|
|
A (('A', 'B', 'G', 'R'), MSB, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000),
|
|
} },
|
|
{ D (BGRA, ARGB8888), {
|
|
A (('A', 'R', 'G', 'B'), LSB, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000),
|
|
A (('B', 'G', 'R', 'A'), MSB, 0x0000ff00, 0x00ff0000, 0xff000000, 0x000000ff),
|
|
} },
|
|
{ D (xRGB, BGRX8888), {
|
|
X (('B', 'G', 'R', 'X'), LSB, 0x0000ff00, 0x00ff0000, 0xff000000),
|
|
X (('X', 'R', 'G', 'B'), MSB, 0x00ff0000, 0x0000ff00, 0x000000ff),
|
|
} },
|
|
{ D (RGBx, XBGR8888), {
|
|
X (('X', 'B', 'G', 'R'), LSB, 0x000000ff, 0x0000ff00, 0x00ff0000),
|
|
X (('R', 'G', 'B', 'X'), MSB, 0xff000000, 0x00ff0000, 0x0000ff00),
|
|
} },
|
|
{ D (xBGR, RGBX8888), {
|
|
X (('R', 'G', 'B', 'X'), LSB, 0xff000000, 0x00ff0000, 0x0000ff00),
|
|
X (('X', 'B', 'G', 'R'), MSB, 0x000000ff, 0x0000ff00, 0x00ff0000),
|
|
} },
|
|
{ D (BGRx, XRGB8888), {
|
|
X (('X', 'R', 'G', 'B'), LSB, 0x00ff0000, 0x0000ff00, 0x000000ff),
|
|
X (('B', 'G', 'R', 'X'), MSB, 0x0000ff00, 0x00ff0000, 0xff000000),
|
|
} },
|
|
#undef X
|
|
#undef A
|
|
#undef F
|
|
#undef D
|
|
};
|
|
/* *INDENT-ON* */
|
|
|
|
static const struct FormatMap *
|
|
get_format_map_from_va_fourcc (guint va_fourcc)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
|
|
if (format_map[i].va_format.fourcc == va_fourcc)
|
|
return &format_map[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const struct FormatMap *
|
|
get_format_map_from_drm_fourcc (guint drm_fourcc)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
|
|
if (format_map[i].drm_fourcc == drm_fourcc)
|
|
return &format_map[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct FormatMap *
|
|
get_format_map_from_video_format (GstVideoFormat format)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
|
|
if (format_map[i].format == format)
|
|
return &format_map[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static inline gboolean
|
|
va_format_is_rgb (const VAImageFormat * va_format)
|
|
{
|
|
return va_format->depth != 0;
|
|
}
|
|
|
|
static inline gboolean
|
|
va_format_is_same_rgb (const VAImageFormat * fmt1, const VAImageFormat * fmt2)
|
|
{
|
|
return (fmt1->red_mask == fmt2->red_mask
|
|
&& fmt1->green_mask == fmt2->green_mask
|
|
&& fmt1->blue_mask == fmt2->blue_mask
|
|
&& fmt1->alpha_mask == fmt2->alpha_mask);
|
|
}
|
|
|
|
static inline gboolean
|
|
va_format_is_same (const VAImageFormat * fmt1, const VAImageFormat * fmt2)
|
|
{
|
|
if (fmt1->fourcc != fmt2->fourcc)
|
|
return FALSE;
|
|
if (fmt1->byte_order != VA_NSB_FIRST
|
|
&& fmt2->byte_order != VA_NSB_FIRST
|
|
&& fmt1->byte_order != fmt2->byte_order)
|
|
return FALSE;
|
|
return va_format_is_rgb (fmt1) ? va_format_is_same_rgb (fmt1, fmt2) : TRUE;
|
|
}
|
|
|
|
static const struct FormatMap *
|
|
get_format_map_from_va_image_format (const VAImageFormat * va_format)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
|
|
if (va_format_is_same (&format_map[i].va_format, va_format))
|
|
return &format_map[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
GstVideoFormat
|
|
gst_va_video_format_from_va_fourcc (guint fourcc)
|
|
{
|
|
const struct FormatMap *map = get_format_map_from_va_fourcc (fourcc);
|
|
|
|
return map ? map->format : GST_VIDEO_FORMAT_UNKNOWN;
|
|
}
|
|
|
|
guint
|
|
gst_va_fourcc_from_video_format (GstVideoFormat format)
|
|
{
|
|
const struct FormatMap *map = get_format_map_from_video_format (format);
|
|
|
|
return map ? map->va_format.fourcc : 0;
|
|
}
|
|
|
|
GstVideoFormat
|
|
gst_va_video_format_from_drm_fourcc (guint fourcc)
|
|
{
|
|
const struct FormatMap *map = get_format_map_from_drm_fourcc (fourcc);
|
|
|
|
return map ? map->format : GST_VIDEO_FORMAT_UNKNOWN;
|
|
}
|
|
|
|
guint
|
|
gst_va_drm_fourcc_from_video_format (GstVideoFormat format)
|
|
{
|
|
const struct FormatMap *map = get_format_map_from_video_format (format);
|
|
|
|
return map ? map->drm_fourcc : 0;
|
|
}
|
|
|
|
guint
|
|
gst_va_chroma_from_video_format (GstVideoFormat format)
|
|
{
|
|
const struct FormatMap *map = get_format_map_from_video_format (format);
|
|
|
|
return map ? map->va_rtformat : 0;
|
|
}
|
|
|
|
guint
|
|
gst_va_chroma_from_va_fourcc (guint va_fourcc)
|
|
{
|
|
const struct FormatMap *map = get_format_map_from_va_fourcc (va_fourcc);
|
|
|
|
return map ? map->va_rtformat : 0;
|
|
}
|
|
|
|
const VAImageFormat *
|
|
gst_va_image_format_from_video_format (GstVideoFormat format)
|
|
{
|
|
const struct FormatMap *map = get_format_map_from_video_format (format);
|
|
|
|
return map ? &map->va_format : NULL;
|
|
}
|
|
|
|
GstVideoFormat
|
|
gst_va_video_format_from_va_image_format (const VAImageFormat * va_format)
|
|
{
|
|
const struct FormatMap *map = get_format_map_from_va_image_format (va_format);
|
|
|
|
return map ? map->format : GST_VIDEO_FORMAT_UNKNOWN;
|
|
}
|
|
|
|
/*
|
|
* XXX: Not all the surfaces formats can be converted into every image
|
|
* format when mapped. This funtion will return the #GstVideoFormat
|
|
* that a surface will map when it is asked for a @image_format.
|
|
*
|
|
* Current implementation only seeks for @image_format in
|
|
* @surface_formats.
|
|
*/
|
|
GstVideoFormat
|
|
gst_va_video_surface_format_from_image_format (GstVideoFormat image_format,
|
|
GArray * surface_formats)
|
|
{
|
|
GstVideoFormat surface_format;
|
|
guint i, image_chroma;
|
|
|
|
if (image_format == GST_VIDEO_FORMAT_UNKNOWN)
|
|
return GST_VIDEO_FORMAT_UNKNOWN;
|
|
|
|
if (!surface_formats || surface_formats->len == 0)
|
|
return GST_VIDEO_FORMAT_UNKNOWN;
|
|
|
|
image_chroma = gst_va_chroma_from_video_format (image_format);
|
|
if (image_chroma == 0)
|
|
return GST_VIDEO_FORMAT_UNKNOWN;
|
|
|
|
for (i = 0; i < surface_formats->len; i++) {
|
|
surface_format = g_array_index (surface_formats, GstVideoFormat, i);
|
|
|
|
if (surface_format == image_format)
|
|
return surface_format;
|
|
}
|
|
|
|
return GST_VIDEO_FORMAT_UNKNOWN;
|
|
}
|
|
|
|
/* Convert the GstVideoInfoDmaDrm into a traditional GstVideoInfo
|
|
with recognized format. */
|
|
gboolean
|
|
gst_va_dma_drm_info_to_video_info (const GstVideoInfoDmaDrm * drm_info,
|
|
GstVideoInfo * info)
|
|
{
|
|
GstVideoFormat video_format;
|
|
GstVideoInfo tmp_info;
|
|
guint i;
|
|
|
|
g_return_val_if_fail (drm_info, FALSE);
|
|
g_return_val_if_fail (info, FALSE);
|
|
|
|
if (GST_VIDEO_INFO_FORMAT (&drm_info->vinfo) != GST_VIDEO_FORMAT_ENCODED) {
|
|
*info = drm_info->vinfo;
|
|
return TRUE;
|
|
}
|
|
|
|
/* The non linear DMA format will be recognized as FORMAT_ENCODED,
|
|
but we still need to know its real format to set the info such
|
|
as pitch and stride. Because va plugins have its internal mapping
|
|
between drm fourcc and video format, we do not use the standard
|
|
conversion API here. */
|
|
video_format = gst_va_video_format_from_drm_fourcc (drm_info->drm_fourcc);
|
|
if (video_format == GST_VIDEO_FORMAT_UNKNOWN)
|
|
return FALSE;
|
|
|
|
if (!gst_video_info_set_format (&tmp_info, video_format,
|
|
GST_VIDEO_INFO_WIDTH (&drm_info->vinfo),
|
|
GST_VIDEO_INFO_HEIGHT (&drm_info->vinfo)))
|
|
return FALSE;
|
|
|
|
*info = drm_info->vinfo;
|
|
info->finfo = tmp_info.finfo;
|
|
for (i = 0; i < GST_VIDEO_MAX_PLANES; i++)
|
|
info->stride[i] = tmp_info.stride[i];
|
|
for (i = 0; i < GST_VIDEO_MAX_PLANES; i++)
|
|
info->offset[i] = tmp_info.offset[i];
|
|
info->size = tmp_info.size;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstVideoFormat
|
|
find_gst_video_format_in_rgb32_map (VAImageFormat * image_format,
|
|
guint * drm_fourcc)
|
|
{
|
|
guint i, j;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (rgb32_format_map); i++) {
|
|
for (j = 0; j < G_N_ELEMENTS (rgb32_format_map[i].va_format); j++) {
|
|
if (va_format_is_same (&rgb32_format_map[i].va_format[j], image_format)) {
|
|
*drm_fourcc = rgb32_format_map[i].drm_fourcc;
|
|
return rgb32_format_map[i].format;
|
|
}
|
|
}
|
|
}
|
|
|
|
return GST_VIDEO_FORMAT_UNKNOWN;
|
|
}
|
|
|
|
struct ImageFormatArray
|
|
{
|
|
VAImageFormat *image_formats;
|
|
gint len;
|
|
};
|
|
|
|
static gpointer
|
|
fix_map (gpointer data)
|
|
{
|
|
struct ImageFormatArray *args = data;
|
|
GstVideoFormat format;
|
|
VAImageFormat *image_format;
|
|
struct FormatMap *map;
|
|
guint drm_fourcc = 0;
|
|
guint i;
|
|
|
|
for (i = 0; i < args->len; i++) {
|
|
image_format = &args->image_formats[i];
|
|
if (!va_format_is_rgb (image_format))
|
|
continue;
|
|
format = find_gst_video_format_in_rgb32_map (image_format, &drm_fourcc);
|
|
if (format == GST_VIDEO_FORMAT_UNKNOWN)
|
|
continue;
|
|
map = get_format_map_from_video_format (format);
|
|
if (!map)
|
|
continue;
|
|
if (va_format_is_same (&map->va_format, image_format))
|
|
continue;
|
|
|
|
map->va_format = *image_format;
|
|
map->drm_fourcc = drm_fourcc;
|
|
|
|
GST_INFO ("GST_VIDEO_FORMAT_%s => { fourcc %" GST_FOURCC_FORMAT ", "
|
|
"drm fourcc %" GST_FOURCC_FORMAT ", %s, bpp %d, depth %d, "
|
|
"R %#010x, G %#010x, B %#010x, A %#010x }",
|
|
gst_video_format_to_string (map->format),
|
|
GST_FOURCC_ARGS (map->va_format.fourcc),
|
|
GST_FOURCC_ARGS (map->drm_fourcc),
|
|
(map->va_format.byte_order == 1) ? "LSB" : "MSB",
|
|
map->va_format.bits_per_pixel, map->va_format.depth,
|
|
map->va_format.red_mask, map->va_format.green_mask,
|
|
map->va_format.blue_mask, map->va_format.alpha_mask);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* XXX: RGB32 LSB VAImageFormats don't map statically with GStreamer
|
|
* color formats. Each driver does what they want.
|
|
*
|
|
* For MSB, there is no ambiguity: same order in define, memory and
|
|
* CPU. For example,
|
|
*
|
|
* RGBA is RGBA in memory and RGBA with channel mask R:0xFF0000
|
|
* G:0x00FF0000 B:0x0000FF00 A:0x000000FF in CPU.
|
|
*
|
|
* For LSB, CPU's perspective and memory's perspective are
|
|
* different. For example,
|
|
*
|
|
* From CPU's perspective, it's RGBA order in memory, but when it is
|
|
* stored in memory, because CPU's little endianness, it will be
|
|
* re-ordered, with mask R:0x000000FF G:0x0000FF00 B:0x00FF0000
|
|
* A:0xFF000000.
|
|
*
|
|
* In other words, from memory's perspective, RGBA LSB is equal as
|
|
* ABGR MSB.
|
|
*
|
|
* These definitions are mixed used all over the media system and we
|
|
* need to correct the mapping form VA video format to GStreamer
|
|
* video format in both manners.
|
|
*
|
|
* https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/123
|
|
*/
|
|
void
|
|
gst_va_video_format_fix_map (VAImageFormat * image_formats, gint num)
|
|
{
|
|
static GOnce once = G_ONCE_INIT;
|
|
struct ImageFormatArray args = { image_formats, num };
|
|
|
|
g_once (&once, fix_map, &args);
|
|
}
|