mobian, pinephone camera, and megapixels

Code:
$ cat .config/megapixels/postprocess.sh 

#!/bin/sh



# The post-processing script gets called after taking a burst of

# pictures into a temporary directory. The first argument is the

# directory containing the raw files in the burst. The contents

# are 1.dng, 2.dng.... up to the number of photos in the burst.

#

# The second argument is the filename for the final photo without

# the extension, like "/home/user/Pictures/IMG202104031234" 

#

# The post-processing script is responsible for cleaning up

# temporary directory for the burst.



if [ "$#" -ne 2 ]; then

    echo "Usage: $0 [burst-dir] [target-name]"

    exit 2

fi



BURST_DIR="$1"

TARGET_NAME="$2"



MAIN_PICTURE="$BURST_DIR"/1



# Copy the first frame of the burst as the raw photo

# cp "$BURST_DIR"/1.dng "$TARGET_NAME.dng"



# Create a .jpg if raw processing tools are installed

DCRAW=""

TIFF_EXT="dng.tiff"

if command -v "dcraw_emu" > /dev/null

then

    DCRAW=dcraw_emu

    # -fbdd 1    Raw denoising with FBDD

    set -- -fbdd 1

elif [ -x "/usr/lib/libraw/dcraw_emu" ]; then

    DCRAW=/usr/lib/libraw/dcraw_emu

    # -fbdd 1    Raw denoising with FBDD

    set -- -fbdd 1

elif command -v "dcraw" > /dev/null

then

    DCRAW=dcraw

    TIFF_EXT="tiff"

    set --

fi



CONVERT=""

if command -v "convert" > /dev/null

then

    CONVERT="convert"

    # -fbdd 1    Raw denoising with FBDD

    set -- -fbdd 1

elif command -v "gm" > /dev/null

then

    CONVERT="gm"

fi





if [ -n "$DCRAW" ]; then

    # +M        use embedded color matrix

    # -H 4        Recover highlights by rebuilding them

    # -o 1        Output in sRGB colorspace

    # -q 3        Debayer with AHD algorithm

    # -T        Output TIFF

    $DCRAW +M -H 4 -o 1 -q 3 -T "$@" "$MAIN_PICTURE.dng"



    # If imagemagick is available, convert the tiff to jpeg and apply slight sharpening

    if [ -n "$CONVERT" ];

    then

        if [ "$CONVERT" = "convert" ]; then

            convert "$MAIN_PICTURE.$TIFF_EXT" -sharpen 0x1.0 "$TARGET_NAME.jpg"

        else

            gm convert "$MAIN_PICTURE.$TIFF_EXT" -sharpen 0x1.0 "$TARGET_NAME.jpg"

        fi



        # If exiftool is installed copy the exif data over from the tiff to the jpeg

        # since imagemagick is stupid

        if command -v exiftool > /dev/null

        then

            exiftool -tagsFromfile "$MAIN_PICTURE.$TIFF_EXT" \

                 -software="Megapixels" \

                 -overwrite_original "$TARGET_NAME.jpg"

            exiftool -tagsFromFile @ "-ModifyDate>DateTimeOriginal" -overwrite_original "$TARGET_NAME.jpg"

        fi



        echo "$TARGET_NAME.jpg"

    else

        cp "$MAIN_PICTURE.$TIFF_EXT" "$TARGET_NAME.tiff"



        echo "$TARGET_NAME.tiff"

    fi

fi



# Clean up the temp dir containing the burst

rm -rf "$BURST_DIR"