Jan/WLED_MM_Infinity
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camelCase, future support, minor cleanup

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* use camelCase for local variables
* furure support: rename drawPixelCallback to draw2DPixelCallback
This commit is contained in:
Frank
2025-11-07 11:05:44 +01:00
parent 9564791640
commit f955df0488
1 changed files with 13 additions and 12 deletions
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25
wled00/image_loader.cpp
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@@ -49,8 +49,9 @@ bool openGif(const char *filename) { // side-effect: updates "file"
static Segment* activeSeg;
static uint16_t gifWidth, gifHeight; // these two must stay uint16_t, because they are passed by reference
static unsigned seg_cols = 1;
static unsigned seg_rows = 1;
static unsigned segCols = 1;
static unsigned segRows = 1;
//static unsigned segLen = 1; // for future 1D support
static int expandX = 1;
static int expandY = 1;
static int lastX = -1, lastY = -1;
@@ -69,12 +70,11 @@ void updateScreenCallback(void) {
}
lastX = lastY = -1; // invalidate last position
}
void drawPixelCallback(int16_t x, int16_t y, uint8_t red, uint8_t green, uint8_t blue) {
void draw2DPixelCallback(int16_t x, int16_t y, uint8_t red, uint8_t green, uint8_t blue) {
// simple nearest-neighbor downscaling
int outY = y * seg_rows / gifHeight;
int outX = x * seg_cols / gifWidth;
if ((unsigned(outX) >= seg_cols) || (unsigned(outY) >= seg_rows)) return; // out of range
int outY = y * segRows / gifHeight;
int outX = x * segCols / gifWidth;
if ((unsigned(outX) >= segCols) || (unsigned(outY) >= segRows)) return; // out of range
if ((lastX == outX) && (lastY == outY)) return; // downscaling optimization: skip re-painting same pixel
lastX = outX; lastY = outY;
@@ -105,8 +105,9 @@ byte renderImageToSegment(Segment &seg) {
// TODO: if (seg.mode != seg.currentMode()) return IMAGE_ERROR_WAITING;
if (activeSeg && activeSeg != &seg) return IMAGE_ERROR_SEG_LIMIT; // only one segment at a time
activeSeg = &seg;
seg_cols = activeSeg->virtualWidth();
seg_rows = activeSeg->virtualHeight();
segCols = activeSeg->virtualWidth();
segRows = activeSeg->virtualHeight();
// segLen = activeSeg->virtualLength(); // for future 1D and expand1D support
if (strncmp(lastFilename +1, seg.name, 32) != 0) { // segment name changed, load new image
strncpy(lastFilename +1, seg.name, 32);
@@ -126,7 +127,7 @@ byte renderImageToSegment(Segment &seg) {
}
decoder.setScreenClearCallback(screenClearCallback);
decoder.setUpdateScreenCallback(updateScreenCallback);
decoder.setDrawPixelCallback(drawPixelCallback);
decoder.setDrawPixelCallback(draw2DPixelCallback);
decoder.setFileSeekCallback(fileSeekCallback);
decoder.setFilePositionCallback(filePositionCallback);
decoder.setFileReadCallback(fileReadCallback);
@@ -177,8 +178,8 @@ byte renderImageToSegment(Segment &seg) {
return IMAGE_ERROR_GIF_DECODE;
}
// softhack007: pre-calculate upscaling for speedup
expandX = (seg_cols+(gifWidth-1)) / gifWidth;
expandY = (seg_rows+(gifHeight-1)) / gifHeight;
expandX = (segCols+(gifWidth-1)) / gifWidth;
expandY = (segRows+(gifHeight-1)) / gifHeight;
int result = decoder.decodeFrame(false);
if (result < 0) {