Add new startup logo and startup / shutdown animation in mt6735

One 、 Turn it on logo
Turn it on logo In two parts , One is ：《uboot logo》, The other is ：《kernel logo》,Android When starting up, it will display 《uboot logo》 picture , Then it shows 《kernel logo》 picture . There are some Android The mobile phone will make these two pictures the same , therefore , When we start the machine, we don't feel the change .

Next, I want to change the original 《uboot logo》、《kernel logo》 Replace ：

Enter the command ：

cd ~/mt6735/bootable/bootloader/lk/dev/logo/wvga
Enter storage and start up logo Under the table of contents , take wvga_uboot.bmp wvga_kernel.bmp Replace these two pictures , And then mt6735 Compile and download the source code to AP7200 Mobile development board , Turn it on , See the effect .

uboot logo

kernel logo

Two 、 Power on animation
（1） Make pictures
Make a group of pictures, animations and other videos we usually see , In fact, it's from the circulation of pictures , Each picture is called “1 frame ”, It's usually used 1 How many pictures are played per second to calculate the number of frames , such as 1 Seconds to play 12 A picture , Namely 12 frame . So show the boot animation , Then we need to make a group of different pictures to play constantly . Be careful ： Make a group of drawings, such as part0, At least one , There is no upper limit , But there are too many pictures , The boot will be slow , A group of pictures is an integral multiple of the number of frames , such as :12 frame , A group can 12、24、36 A picture .

desc.txt What's in it ：

480 300 12
c 1 0 part0
c 1 0 part1
c 0 0 part2
480 300 12 A resolution of 480*300 The number of frames is 12
c 1 0 part0 c: display mode 1： Not infinite loop part0： According to the first 0 Part of the picture
c 1 0 part1 c: display mode 1： Not infinite loop part1： According to the first 1 Part of the picture
c 0 0 part2 c: display mode 0： Infinite loop part0： According to the first 2 Part of the picture
Package and compress the pictures after making them , When compressing part0 part1 part2… desc.txt Select all , The compression mode is storage mode ：

stay Linux Next, use the following command to package them together ：

zip -Z store raindi-bootanimation.zip part0/.png part1/.png part2/*.png desc.txt
（2） Replace the original boot animation
Input instructions at the terminal , Look at the copied files raindi-bootanimation.zip

open AllAudio file

AllAudio The contents of the document ：

（3） compile
source ./build/envsetup.sh
lunch 28
make 2>&1 | tee build.log
（4） Download to AP7350 Mobile development board and start to check the effect

Power on animation effect ：

3、 ... and 、 Shutdown animation
The addition of shutdown animation and startup animation is similar , Briefly describe the steps ：

1. Make a series of pictures , For continuous playback , Form an animation effect .
2. Pack the pictures , Note that the compression type is “ Storage ”.
3. Copy the packaged pictures to the following directory ：

cp /xxx/raindi-shutanimation.zip ~/mt6735/frameworks/base/data/sounds
4. modify AllAudio.mk Contents of Li , Make it possible to generate boot animation after compilation ：

vim ~/mt6735/frameworks/base/data/sounds/AllAudio.mk
Be careful ： The shutdown animation generates ：system/media/shutanimation.zip Boot animation is ：system/media/bootanimation.zip, Pay attention to the difference between the two when modifying

cd ~/mt6735/out/target/product/p6s_65u_l1/system/media

[email protected]:~/mt6735/out/target/product/p6s_65u_l1/system/media$ ls

audio bootanimation.zip images shutanimation.zip video

6. After the modification is completed , take mt6735 compile 、 Download to AP7350 Mobile development board , The effect is as follows ：

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