• A little bit faster way to make a screenshot on android device through usb.
• I getting ~2sec, compared to ~6sec if doing default way.
• It works on my older Nexus7.
• Not sure about other devices.
• And you may want to remove 90deg rotation at ppm_to_bmp step.

so

it runs same adb shell screencap but w/o png conversion and converts given data to bmp at home

depends

• imagemagick
• adb, and usb connected device

alternative

shell script by max_plenert:

adb shell screencap /sdcard/mytmp/rock.raw
adb pull /sdcard/mytmp/rock.raw
adb shell rm /sdcard/mytmp/rock.raw

// remove the header
tail -c +13 rock.raw > rock.rgba

// extract width height and pixelformat:
hexdump -e '/4 "%d"' -s 0 -n 4 rock.raw
hexdump -e '/4 "%d"' -s 4 -n 4 rock.raw
hexdump -e '/4 "%d"' -s 8 -n 4 rock.raw

convert -size 480x800 -depth 8 rock.rgba rock.png