new feature: download img from dropbox url

[shannon112]

No description provided.

[shannon112]

https://forum.arduino.cc/t/download-image-from-internet-to-esp32-and-display-it-out-to-a-tft-display/1075289

[shannon112]

https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Using-API-to-get-a-list-of-direct-url-s-to-images-in-a-folder/td-p/389583

[shannon112]

https://randomnerdtutorials.com/esp32-https-requests/

With the ESP32, to check the validity of a server, you can load any of those certificates: root, intermediate, or server certificate.

So, if you want to use it in your ESP32 projects, you’ll need to update your code quite frequently. If you want your code to run for years without worrying, you can use the website’s root certificate, which usually has a validity of five to ten years or more.

One of the easiest ways is to download the certificate directly from your browser. You can also use OpenSSL and get all the certificate information you need using the command line (we won’t cover this method in this tutorial).

[shannon112]

linux command to get my github profile photo
url -X GET "https://avatars.githubusercontent.com/u/24497728?v=4" --output img.png

[shannon112]

google drive, downloading, python approach
https://forum.arduino.cc/t/getting-file-from-google-drive-and-downloading-it-to-arduino/564541
https://randomnerdtutorials.com/getting-started-micropython-esp32-esp8266/

[shannon112]

similar project: https://github.com/Jaycar-Electronics/Digital-Photo-Frame
including decoding from a imgur photo

[shannon112]

how to get imgur images from album:
https://stackoverflow.com/questions/29354303/imgur-retrieval-of-direct-image-urls-given-album-link
curl -X GET "https://imgur.com/a/d0xpCRq/all" --output output.txt
https://github.com/nkouevda/albumr/blob/main/albumr/albumr.py

<div class="post-images">
<div id="zWhyREP" class="post-image-container" itemscope itemtype="https://schema.org/ImageObject">
<div id="VlVMfth" class="post-image-container post-image-container--spacer" itemscope itemtype="https://schema.org/ImageObject">

<script type="text/javascript">
            image               : {"id":"d0xpCRq","title":null,"description":null,"privacy":"1","cover":"VlVMfth","order":"0","layout":"b","num_images":"2","datetime":"2023-05-14 03:34:14","title_clean":null,"views":"1","isAd":false,"hash":"d0xpCRq","album_cover":"VlVMfth","album_privacy":"1","album_description":null,"album_layout":"b","starting_score":0,"is_album":true,"operation":null,"favorited":false,"force_grid":false,"is_viral":false,"cover_deletehash":"","album_images":{"count":2,"images":[{"hash":"VlVMfth","title":"","description":null,"has_sound":false,"width":907,"height":523,"size":263680,"ext":".png","animated":false,"prefer_video":false,"looping":false,"datetime":"2023-05-14 03:34:25","edited":"0"},{"hash":"zWhyREP","title":"","description":null,"has_sound":false,"width":836,"height":1169,"size":361123,"ext":".png","animated":false,"prefer_video":false,"looping":false,"datetime":"2023-05-14 03:39:48","edited":"0"}]},"adConfig":{"safeFlags":["not_in_gallery","share"],"highRiskFlags":[],"unsafeFlags":["sixth_mod_unsafe"],"wallUnsafeFlags":[],"showsAds":false,"showAdLevel":1,"safe_flags":["not_in_gallery","share"],"high_risk_flags":[],"unsafe_flags":["sixth_mod_unsafe"],"wall_unsafe_flags":[],"show_ads":false,"show_ad_level":1,"nsfw_score":0}},

[shannon112]

found official api: https://apidocs.imgur.com/#7dde894b-a967-4419-9be2-082fbf379109

GET https://api.imgur.com/3/album/{{albumHash}}/images

[shannon112]

parse json

{
    "id": "d0xpCRq",
    "title": null,
    "description": null,
    "privacy": "1",
    "cover": "VlVMfth",
    "order": "0",
    "layout": "b",
    "num_images": "2",
    "datetime": "2023-05-14 03:34:14",
    "title_clean": null,
    "views": "1",
    "isAd": false,
    "hash": "d0xpCRq",
    "album_cover": "VlVMfth",
    "album_privacy": "1",
    "album_description": null,
    "album_layout": "b",
    "starting_score": 0,
    "is_album": true,
    "operation": null,
    "favorited": false,
    "force_grid": false,
    "is_viral": false,
    "cover_deletehash": "",
    "album_images": {
        "count": 2,
        "images": [
            {
                "hash": "VlVMfth",
                "title": "",
                "description": null,
                "has_sound": false,
                "width": 907,
                "height": 523,
                "size": 263680,
                "ext": ".png",
                "animated": false,
                "prefer_video": false,
                "looping": false,
                "datetime": "2023-05-14 03:34:25",
                "edited": "0"
            },
            {
                "hash": "zWhyREP",
                "title": "",
                "description": null,
                "has_sound": false,
                "width": 836,
                "height": 1169,
                "size": 361123,
                "ext": ".png",
                "animated": false,
                "prefer_video": false,
                "looping": false,
                "datetime": "2023-05-14 03:39:48",
                "edited": "0"
            }
        ]
    },
    "adConfig": {
        "safeFlags": [
            "not_in_gallery",
            "share",
            "page_load"
        ],
        "highRiskFlags": [],
        "unsafeFlags": [
            "sixth_mod_unsafe"
        ],
        "wallUnsafeFlags": [],
        "showsAds": false,
        "showAdLevel": 1,
        "safe_flags": [
            "not_in_gallery",
            "share",
            "page_load"
        ],
        "high_risk_flags": [],
        "unsafe_flags": [
            "sixth_mod_unsafe"
        ],
        "wall_unsafe_flags": [],
        "show_ads": false,
        "show_ad_level": 1,
        "nsfw_score": 0
    }
}

https://github.com/bblanchon/ArduinoJson
https://arduinojson.org/v6/example/parser/

[shannon112]

https GET request cannot use HTTP/2.0, has to use HTTP/1.0, or will get bad request

[shannon112]

cannot read all?

      //char c = client.read();
      //Serial.write(c);

using readString instead

      String response = client.readString(); 
      Serial.println(response);

https://github.com/espressif/arduino-esp32/blob/3ec5f4efa1de4342aaab742008dc630091e5e035/cores/esp32/Stream.h#L118

[shannon112]

I'm missing c++ so much:
https://github.com/mike-matera/ArduinoSTL
https://github.com/maniacbug/StandardCplusplus

[shannon112]

Less similar examples:
https://hackaday.com/2020/03/01/a-minimal-esp8266-digital-picture-frame/
https://youtu.be/XfgxuXxZJiM
https://www.hackster.io/luo-zeqing/make-a-digital-photo-album-by-esp32-72a672
https://www.reddit.com/r/esp32/comments/u3mm0g/i_made_esp32_photo_frame_that_changes_every_day/