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Bodmer / JPEGDecoder

A JPEG decoder library
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Name of the Library is Wrong :) #25

Closed prof955 closed 6 years ago

prof955 commented 6 years ago

Hi, firstly thank you for that great library.

but i believe your library name should be JPEGDecoder+TFT Shower :) because it seem libray don't do decode Only. decode and draw images on screen too. and if i am correct(i hope not) it cannot do Decode Only...

am i right?

please say NO :) and point me where do i mistaken.

i found your library while i am looking library to decode PNG/BMP(or JPEG at least) image to use on my projects.
but my project don't include any TFT screen... so i stuck. i searched in codes you wrote. i tried to take just decode part from JPEG_functions but no luck. it's seems nested with tft draw functions.

i hope i am wrong(about library name) and you can prove i am wrong by showing me where the Only decoding part.

prof955 commented 6 years ago

is this part what i am looking for???

//================================================================== // Open a Jpeg file and dump it to the Serial port as a C array //================================================================== void createArray(const char *filename)

Bodmer commented 6 years ago

The library is a decoder for the Arduino environment to support TFT display libraries. The examples show the use of the decoder with different TFT libraries. The decoder converts all colour values to 16 bits so you may find this is not what you want.

The basic decoder code is picojpeg so that is a good place to start: https://github.com/richgel999/picojpeg

prof955 commented 6 years ago

ok. thank you for redirecting me. actually i take a look at that before ending up in here. didn't saw any use for myslef.

i believe i can use your library with some help. i tried to find how to use again and createArray is serial print of all data of jpeg image. data is in: while ( jpgFile.available()) { data = jpgFile.read(); but it is just seems uint8_t 0xFF(as an example) bytes. is it possible to decode as uint16_t 0xFFFF(as example) ?

i was just using funny language and i am sorry if it was uncomfortable / not funny for you. was it?

prof955 commented 6 years ago

or i can ask like that:

i want to use tft.drawRGBBitmapso i will need RGB values. Can i get from your library?

its like that in GFX libray: drawRGBBitmap(int16_t x, int16_t y, const uint16_t bitmap[], int16_t w, int16_t h)