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Add a API function to get the pixel size of nvnc_fb

dmabuf-import
Andri Yngvason 2021-09-05 00:20:05 +00:00
parent c7dd062498
commit 96886e21d5
4 changed files with 38 additions and 2 deletions
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1
include/neatvnc.h
View File

@ -97,6 +97,7 @@ uint16_t nvnc_fb_get_width(const struct nvnc_fb* fb);
uint16_t nvnc_fb_get_height(const struct nvnc_fb* fb);
uint32_t nvnc_fb_get_fourcc_format(const struct nvnc_fb* fb);
int32_t nvnc_fb_get_stride(const struct nvnc_fb* fb);
int nvnc_fb_get_pixel_size(const struct nvnc_fb* fb);
struct nvnc_fb_pool* nvnc_fb_pool_new(uint16_t width, uint16_t height,
uint32_t fourcc_format, uint16_t stride);

2
include/pixels.h
View File

@ -29,3 +29,5 @@ void pixel32_to_cpixel(uint8_t* restrict dst,
int rfb_pixfmt_from_fourcc(struct rfb_pixel_format *dst, uint32_t src);
uint32_t rfb_pixfmt_to_fourcc(const struct rfb_pixel_format* fmt);
int pixel_size_from_fourcc(uint32_t fourcc);

7
src/fb.c
View File

@ -15,6 +15,7 @@
*/
#include "fb.h"
#include "pixels.h"
#include "neatvnc.h"
#include <stdlib.h>
@ -99,6 +100,12 @@ int32_t nvnc_fb_get_stride(const struct nvnc_fb* fb)
return fb->stride;
}
EXPORT
int nvnc_fb_get_pixel_size(const struct nvnc_fb* fb)
{
return pixel_size_from_fourcc(fb->fourcc_format);
}
static void nvnc__fb_free(struct nvnc_fb* fb)
{
nvnc_cleanup_fn cleanup = fb->common.cleanup_fn;

30
src/pixels.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2019 - 2020 Andri Yngvason
* Copyright (c) 2019 - 2021 Andri Yngvason
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -220,4 +220,30 @@ bpp_16:
dst->true_colour_flag = 1;
return 0;
};
}
int pixel_size_from_fourcc(uint32_t fourcc)
{
switch (fourcc & ~DRM_FORMAT_BIG_ENDIAN) {
case DRM_FORMAT_RGBA8888:
case DRM_FORMAT_RGBX8888:
case DRM_FORMAT_BGRA8888:
case DRM_FORMAT_BGRX8888:
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ABGR8888:
case DRM_FORMAT_XBGR8888:
return 4;
case DRM_FORMAT_RGBA4444:
case DRM_FORMAT_RGBX4444:
case DRM_FORMAT_BGRA4444:
case DRM_FORMAT_BGRX4444:
case DRM_FORMAT_ARGB4444:
case DRM_FORMAT_XRGB4444:
case DRM_FORMAT_ABGR4444:
case DRM_FORMAT_XBGR4444:
return 2;
}
return 0;
}