Demonstration of the Bitmap rendering - reads BMP and JPG files in many format variants and renders to the screen.

Dependencies:   FlashFileSystem mbed RA8875

Bitmap and JPEG Demo

This demo publishes each graphic file from a list of files to the display. The graphic files can be BMP, JPG, or ICO. On the terminal it displays the filename and the return-code (in case of an error). This demo works as intended on the 480x272 display in either 8 or 16 bit per pixel mode and it should work on larger displays.

Items of interest to change and rebuild/test:

// Not all systems have the LocalFileSystem. Plug in the library and driver for yours.
LocalFileSystem local("local");             // Image source

TestImage_T TestImage[] = {
    { 0, 0, "/local/01601602.bmp"},
    { 0, 0, "/local/48027202.bmp"},
    { 0, 0, "/local/48027204.bmp"},
    { 0, 0, "/local/48027208.bmp"},
    { 0, 0, "/local/48027224.bmp"},
    { 0, 0, "/local/p480272.jpg"},
    { 0, 0, "/local/p480272.bmp"}
};

// deefine your screen size and color depth. 
#define SCREEN_W 480
#define SCREEN_H 272
#define SCREEN_BPP 16

LocalFileSystem may need to be altered to SDFileSystem (for example) and the corresponding paths in the TestImage array.

Also, the Screen size and bit per pixel color depth.

Images

The following image files are saved in different resolution and color depth. The first, and smallest, was simply for developing the monochrome support. Others are 4-bit color, 8-bit color, 24-bit color, and a mislabeled 1-bit color (shown as 02).

/media/uploads/WiredHome/testimages.zip

Revisions of RA8875.lib

Revision Date Message Actions
20:583a7555ec2f 2020-03-29 Pick up a bug-fix on jpeg rendering File  Diff  Annotate
19:853f3668db17 2020-03-28 Breaking change update to RA8875 Library. Improved APIs, Improved Portrait Mode, Code Cleanup. File  Diff  Annotate
18:dafd8eb3cebf 2019-03-04 Update RA8875 Lib to add GSL1680 support. File  Diff  Annotate
16:987892bebe05 2018-07-17 Repurposed to pull images from LocalFileSystem and FlashFileSystem File  Diff  Annotate
14:694822610507 2016-08-03 Changed a few images and repeat the test forever.; File  Diff  Annotate
13:5c69f3c304c8 2016-05-17 Revised demo to also show JPEG files, not just BMP files. File  Diff  Annotate
12:93adb3470150 2016-05-17 Working - original malloc was incorrect - causing out of bounds corruption. File  Diff  Annotate
10:e5eb5f6294fd 2016-05-16 not working - added instrumentation File  Diff  Annotate
8:caad7dbb4eda 2016-05-16 Not working - add instrumentation. File  Diff  Annotate
6:0d2003e1d114 2016-05-16 Add JDEC memory dump File  Diff  Annotate
4:12a2675c2b80 2016-05-16 add instrumentation File  Diff  Annotate
2:1e1dd697d12d 2016-05-16 Jpeg not yet working, just an intermediate checkpoint. File  Diff  Annotate
1:84fb3e9adaaf 2016-05-15 Working JPEG decoder using c functions external to the graphics library. File  Diff  Annotate
0:9ecf49d75058 2016-04-27 Demonstration that loads various bitmap files of different color depth. File  Diff  Annotate