hi3535 hifb

hifb.md

記錄hi3535 hifb

• cmd

cmd	note	cmddata
FBIOGET_VSCREENINFO	获取屏幕可变信息	struct fb_var_screeninfo
FBIOPUT_VSCREENINFO	设置屏幕可变信息
FBIOGET_FSCREENINFO	获取屏幕固定信息	struct fb_fix_screeninfo
FBIOPAN_DISPLAY	设置 PAN显示	struct fb_var_screeninfo
FBIOGET_CAPABILITY_HIFB	获取叠加层的支持能力	HIFB_CAPABILITY_S
FBIOGET_SCREEN_ORIGIN_HIFB	获取叠加层坐标原点	HIFB_POINT_S
FBIOPUT_SCREEN_ORIGIN_HIFB	设置叠加层坐标原点
FBIOGET_SHOW_HIFB	获取叠加层显示状态
FBIOPUT_SHOW_HIFB	设置叠加层显示状态
FBIOGET_ALPHA_HIFB	获取叠加层 Alpha	HIFB_ALPHA_S
FBIOPUT_ALPHA_HIFB	设置叠加层 Alpha
FBIOGET_COLORKEY_HIFB	获取叠加层的 Colorkey属性
FBIOPUT_COLORKEY_HIFB	设置叠加层的 Colorkey属性
FBIOGET_MDDRDETECT_HIFB	获取内存侦测属性
FBIOPUT_MDDRDETECT_HIFB	设置内存侦测属性

• FBIOGET_VSCREENINFO     * 获取屏幕可变信息 struct fb_var_screeninfo
  • 高清设备的图形层默认分辨率为 1280x720
  • 标清设备的图形层的默认分辨率为 720x576
  • 素格式默认为 ARGB1555     * Hi3535 支持像素格式 ARGB1555、ARGB4444 和 ARGB8888
  • ex1: 设置 Framebuffer的屏幕分辨率和像素格式等
  • 设置实际分辨率为 720x576，虚拟分辨率为 720x576, 偏移为（0，0） ，像素格式为 ARGB1555

struct fb_bitfield r32 = {10, 5, 0}; 
struct fb_bitfield g32 = {5, 5, 0}; 
struct fb_bitfield b32 = {0, 5, 0};  
struct fb_bitfield a32 = {15, 1, 0}; 

• FBIOGET_SHOW_HIFB     * 获取当前叠加层的显示状态
  • bShow = HI_TRUE：当前叠加层处于显示状态
  • bShow = HI_FALSE：当前叠加层处于藏状态
  • 为正常显示，在显示之前，应将 bShow的值设为HI_TRUE, 即使能对应图形层

Graphics Development User Guide.pdf

• HiSilicon digital media processing platform (HiMPP)
  • Two-dimensional engine (TDE) 硬件加速对图形图像进行处理
  • HiSilicon frame buffer (HiFB) 在 Linux Framebuffer 的基础上增加层间 colorkey、层间 Alpha

proc

可通过命令 cat /proc/graphics/hifbn（n为图形层号）查看各个图形层的状态

• 查看layer bind
  • cat /proc/umap/vo

-----GRAPHICS LAYER------------------------------------------------------------
 Layer BindDev
   HC0       0

• 使用ARGB1555且設定Alpha0為0，即可以顯示vo layout

/proc/graphics # cat hifb0
layer name                       :layer_0 
Open count                       :1
Show state                       :ON
Start position                   :(0, 0)
xres, yres                       :(1280, 720)
xres_virtual, yres_virtual       :(1280, 1440)
xoffset, yoffset                 :(0, 0)
fix.line_length                  :2560
Mem size:                        :8100 KB
Layer Scale (hw):                :NO 
ColorFormat:                     :ARGB1555
Alpha Enable                     :ON
AlphaChannel Enable              :ON
Alpha0, Alpha1                   :0, 255
Alpha Global                     :255
Colorkey Enable                  :OFF
Colorkey value                   :0x0
Deflicker Mode:                  :NONE
Deflicker Level:                 :AUTO
Display Buffer mode              :unkown
Displaying addr (register)       :0xa4e10000
display buffer[0] addr           :0xa4e10000
display buffer[1] addr           :0xa4fd2000
displayrect                      :(1280, 720)
screenrect                       :(1280, 720)
device max resolution            :1280, 720
IsNeedFlip(2buf)                 :NO
BufferIndexDisplaying(2buf)      :0
refresh request num(2buf)        :0
switch buf num(2buf)             :0
union rect (2buf)                :(0,0,0,0)
canavas updated addr             :0xa4e10000
canavas updated (w, h)           :1280,720 
canvas width                     :1280
canvas height                    :720
canvas pitch                     :2560
canvas format                    :ARGB1555
IsCompress                       :NO
Is DDR Dettect                   :NO
DDR Detect Zones                 :0

• 使用ARGB888可以顯示vo layout
  • AlphaChannel Enable(off)
  • Alpha0, Alpha1 (0, 255) , 0表示全透明

layer name                       :layer_0 
Open count                       :1
Show state                       :ON
Start position                   :(0, 0)
xres, yres                       :(1280, 720)
xres_virtual, yres_virtual       :(1280, 720)
xoffset, yoffset                 :(0, 0)
fix.line_length                  :5120
Mem size:                        :8100 KB
Layer Scale (hw):                :NO 
ColorFormat:                     :ARGB8888
Alpha Enable                     :ON
AlphaChannel Enable              :OFF
Alpha0, Alpha1                   :0, 255
Alpha Global                     :255
Colorkey Enable                  :OFF
Colorkey value                   :0x0
Deflicker Mode:                  :NONE
Deflicker Level:                 :AUTO
Display Buffer mode              :unkown
Displaying addr (register)       :0xa4e10000
display buffer[0] addr           :0xa4e10000
display buffer[1] addr           :0xa5194000
displayrect                      :(1280, 720)
screenrect                       :(1280, 720)
device max resolution            :1280, 720
IsNeedFlip(2buf)                 :NO
BufferIndexDisplaying(2buf)      :0
refresh request num(2buf)        :0
switch buf num(2buf)             :0
union rect (2buf)                :(0,0,0,0)
canavas updated addr             :0xa4e10000
canavas updated (w, h)           :1280,720 
canvas width                     :1280
canvas height                    :720
canvas pitch                     :5120
canvas format                    :ARGB8888
IsCompress                       :NO
Is DDR Dettect                   :NO
DDR Detect Zones                 :0

HiFB

• EX1_DVR_FBStart
  • 開啟/dev/fb0之後不可以離開程式，若離開則會自動關閉，如下 Open count :0 Show state :OFF

/proc/graphics # cat hifb0
layer name                       :layer_0 
Open count                       :0
Show state                       :OFF
Start position                   :(0, 0)
xres, yres                       :(1280, 720)
xres_virtual, yres_virtual       :(1280, 720)
xoffset, yoffset                 :(0, 0)
fix.line_length                  :2560
Mem size:                        :8100 KB
Layer Scale (hw):                :NO 
ColorFormat:                     :ARGB1555
Alpha Enable                     :OFF
AlphaChannel Enable              :OFF
Alpha0, Alpha1                   :0, 255
Alpha Global                     :0
Colorkey Enable                  :ON
Colorkey value                   :0x7c1f
Deflicker Mode:                  :NONE
Deflicker Level:                 :AUTO
Display Buffer mode              :unkown
Displaying addr (register)       :0xa4e10000
display buffer[0] addr           :0xa4e10000
display buffer[1] addr           :0xa4fd2000
displayrect                      :(1280, 720)
screenrect                       :(1280, 720)
device max resolution            :1280, 720
IsNeedFlip(2buf)                 :NO
BufferIndexDisplaying(2buf)      :0
refresh request num(2buf)        :0
switch buf num(2buf)             :0
union rect (2buf)                :(0,0,0,0)
canavas updated addr             :0x0
canavas updated (w, h)           :0,0 
canvas width                     :0
canvas height                    :0
canvas pitch                     :0
canvas format                    :RGB565
IsCompress                       :NO
Is DDR Dettect                   :NO
DDR Detect Zones                 :0

• EX1_DVR_FBStart
  • 開啟/dev/fb0，無離開程式，但此時無vo layer輸出畫面(?) Open count :1 Show state :ON

/proc/graphics # cat hifb0
layer name                       :layer_0 
Open count                       :1
Show state                       :ON
Start position                   :(0, 0)
xres, yres                       :(1280, 720)
xres_virtual, yres_virtual       :(1280, 720)
xoffset, yoffset                 :(0, 0)
fix.line_length                  :2560
Mem size:                        :8100 KB
Layer Scale (hw):                :NO 
ColorFormat:                     :ARGB1555
Alpha Enable                     :OFF
AlphaChannel Enable              :OFF
Alpha0, Alpha1                   :0, 255
Alpha Global                     :0
Colorkey Enable                  :ON
Colorkey value                   :0x7c1f
Deflicker Mode:                  :NONE
Deflicker Level:                 :AUTO
Display Buffer mode              :unkown
Displaying addr (register)       :0xa4e10000
display buffer[0] addr           :0xa4e10000
display buffer[1] addr           :0xa4fd2000
displayrect                      :(1280, 720)
screenrect                       :(1280, 720)
device max resolution            :1280, 720
IsNeedFlip(2buf)                 :NO
BufferIndexDisplaying(2buf)      :0
refresh request num(2buf)        :0
switch buf num(2buf)             :0
union rect (2buf)                :(0,0,0,0)
canavas updated addr             :0x0
canavas updated (w, h)           :0,0 
canvas width                     :0
canvas height                    :0
canvas pitch                     :0
canvas format                    :RGB565
IsCompress                       :NO
Is DDR Dettect                   :NO
DDR Detect Zones                 :0

• EX1_DVR_FBStart
  • 開啟/dev/fb0無離開程式
  • 開啟Alpha Enable並且設定Alpha0為0x0(即全透明)
  • 關閉Color Key

/proc/graphics # cat hifb0
layer name                       :layer_0 
Open count                       :1
Show state                       :ON
Start position                   :(0, 0)
xres, yres                       :(1280, 720)
xres_virtual, yres_virtual       :(1280, 720)
xoffset, yoffset                 :(0, 0)
fix.line_length                  :2560
Mem size:                        :8100 KB
Layer Scale (hw):                :NO 
ColorFormat:                     :ARGB1555
Alpha Enable                     :OFF
AlphaChannel Enable              :ON
Alpha0, Alpha1                   :0, 255
Alpha Global                     :0
Colorkey Enable                  :OFF
Colorkey value                   :0x0
Deflicker Mode:                  :NONE
Deflicker Level:                 :AUTO
Display Buffer mode              :unkown
Displaying addr (register)       :0xa4e10000
display buffer[0] addr           :0xa4e10000
display buffer[1] addr           :0xa4fd2000
displayrect                      :(1280, 720)
screenrect                       :(1280, 720)
device max resolution            :1280, 720
IsNeedFlip(2buf)                 :NO
BufferIndexDisplaying(2buf)      :0
refresh request num(2buf)        :0
switch buf num(2buf)             :0
union rect (2buf)                :(0,0,0,0)
canavas updated addr             :0x0
canavas updated (w, h)           :0,0 
canvas width                     :0
canvas height                    :0
canvas pitch                     :0
canvas format                    :RGB565
IsCompress                       :NO
Is DDR Dettect                   :NO
DDR Detect Zones                 :0
/proc/graphics # 

• ex2_hifb_colorkey
  • 使用colorkey RED(0xfc00)

/proc/graphics # cat hifb0
layer name                       :layer_0 
Open count                       :2
Show state                       :ON
Start position                   :(0, 0)
xres, yres                       :(1280, 720)
xres_virtual, yres_virtual       :(1280, 1440)
xoffset, yoffset                 :(0, 0)
fix.line_length                  :2560
Mem size:                        :8100 KB
Layer Scale (hw):                :NO 
ColorFormat:                     :ARGB1555
Alpha Enable                     :OFF
AlphaChannel Enable              :OFF
Alpha0, Alpha1                   :0, 255
Alpha Global                     :255
Colorkey Enable                  :ON
Colorkey value                   :0xfc00
Deflicker Mode:                  :NONE
Deflicker Level:                 :AUTO
Display Buffer mode              :unkown
Displaying addr (register)       :0xa4e10000
display buffer[0] addr           :0xa4e10000
display buffer[1] addr           :0xa4fd2000
displayrect                      :(1280, 720)
screenrect                       :(1280, 720)
device max resolution            :1280, 720
IsNeedFlip(2buf)                 :NO
BufferIndexDisplaying(2buf)      :0
refresh request num(2buf)        :0
switch buf num(2buf)             :0
union rect (2buf)                :(0,0,0,0)
canavas updated addr             :0xa4e10000
canavas updated (w, h)           :1280,720 
canvas width                     :1280
canvas height                    :720
canvas pitch                     :2560
canvas format                    :ARGB1555
IsCompress                       :NO
Is DDR Dettect                   :NO
DDR Detect Zones                 :0