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imageviewer: Initial support for JPEG progressive images. Add decoder

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Added jpeg decoder jpegp.c using RAINBOW lib. Currently enabled only for pictures not supported by old decoder (as old decoder more optimized for low mem targets)

Someone TODO:
 * Old decoder has optimized downscale logic which new decoder doesn't have (it gives big difference in required memory and time for decoding). This logic should be ported/adapted if possible.

 * Add smooth downscaling.

 * Grayscale support

Change-Id: Ie96bc62848b51cc6a3942f8e069ec6ab02dc1c56
This commit is contained in:
Roman Artiukhin 2024-10-09 19:39:15 +03:00 • committed by Solomon Peachy
parent 64ad7354b6
commit b8238f7b20
19 changed files with 599 additions and 22 deletions
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9
apps/plugins/imageviewer/imageviewer.c
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@ -853,6 +853,8 @@ static int load_and_show(char* filename, struct image_info *info)
file_pt[curfile] = NULL;
return change_filename(direction);
}
reload_decoder:
if (image_type != status) /* type of image is changed, load decoder. */
{
struct loader_info loader_info = {
@ -881,6 +883,13 @@ static int load_and_show(char* filename, struct image_info *info)
else
status = imgdec->load_image(filename, info, buf, &remaining);
if (status == PLUGIN_JPEG_PROGRESSIVE)
{
rb->lcd_clear_display();
status = IMAGE_JPEG_PROGRESSIVE;
goto reload_decoder;
}
if (status == PLUGIN_OUTOFMEM)
{
#ifdef USE_PLUG_BUF