|
|
@@ -21,6 +21,7 @@ typedef struct {
|
|
|
struct { // DirectDraw
|
|
|
struct GDS_Device * Device;
|
|
|
int XOfs, YOfs;
|
|
|
+ int XMin, YMin;
|
|
|
int Depth;
|
|
|
};
|
|
|
};
|
|
|
@@ -38,9 +39,7 @@ static unsigned OutHandler(JDEC *Decoder, void *Bitmap, JRECT *Frame) {
|
|
|
uint8_t *Pixels = (uint8_t*) Bitmap;
|
|
|
|
|
|
for (int y = Frame->top; y <= Frame->bottom; y++) {
|
|
|
- if (y < Context->YOfs) continue;
|
|
|
for (int x = Frame->left; x <= Frame->right; x++) {
|
|
|
- if (x < Context->XOfs) continue;
|
|
|
// Convert the 888 to RGB565
|
|
|
uint16_t Value = (*Pixels++ & ~0x07) << 8;
|
|
|
Value |= (*Pixels++ & ~0x03) << 3;
|
|
|
@@ -57,12 +56,14 @@ static unsigned OutHandlerDirect(JDEC *Decoder, void *Bitmap, JRECT *Frame) {
|
|
|
int Shift = 8 - Context->Depth;
|
|
|
|
|
|
for (int y = Frame->top; y <= Frame->bottom; y++) {
|
|
|
+ if (y < Context->YMin) continue;
|
|
|
for (int x = Frame->left; x <= Frame->right; x++) {
|
|
|
+ if (x < Context->XMin) continue;
|
|
|
// Convert the 888 to RGB565
|
|
|
int Value = ((Pixels[0]*11 + Pixels[1]*59 + Pixels[2]*30) / 100) >> Shift;
|
|
|
Pixels += 3;
|
|
|
// used DrawPixel and not "fast" version as X,Y may be beyond screen
|
|
|
- GDS_DrawPixel( Context->Device, Context->XOfs + x, Context->YOfs + y, Value);
|
|
|
+ GDS_DrawPixel( Context->Device, x + Context->XOfs, y + Context->YOfs, Value);
|
|
|
}
|
|
|
}
|
|
|
return 1;
|
|
|
@@ -90,11 +91,16 @@ static uint16_t* DecodeJPEG(uint8_t *Source, int *Width, int *Height, float Scal
|
|
|
Decoder.scale = Scale;
|
|
|
|
|
|
if (Res == JDR_OK && !SizeOnly) {
|
|
|
- // find the scaling factor
|
|
|
Context.OutData = malloc(Decoder.width * Decoder.height * sizeof(uint16_t));
|
|
|
+
|
|
|
+ // find the scaling factor
|
|
|
uint8_t N = 0, ScaleInt = ceil(1.0 / Scale);
|
|
|
ScaleInt--; ScaleInt |= ScaleInt >> 1; ScaleInt |= ScaleInt >> 2; ScaleInt++;
|
|
|
while (ScaleInt >>= 1) N++;
|
|
|
+ if (N > 3) {
|
|
|
+ ESP_LOGW(TAG, "Image will not fit %dx%d", Decoder.width, Decoder.height);
|
|
|
+ N = 3;
|
|
|
+ }
|
|
|
|
|
|
// ready to decode
|
|
|
if (Context.OutData) {
|
|
|
@@ -102,7 +108,7 @@ static uint16_t* DecodeJPEG(uint8_t *Source, int *Width, int *Height, float Scal
|
|
|
Context.Height = Decoder.height / (1 << N);
|
|
|
if (Width) *Width = Context.Width;
|
|
|
if (Height) *Height = Context.Height;
|
|
|
- Res = jd_decomp(&Decoder, OutHandler, N > 3 ? 3 : N);
|
|
|
+ Res = jd_decomp(&Decoder, OutHandler, N);
|
|
|
if (Res != JDR_OK) {
|
|
|
ESP_LOGE(TAG, "Image decoder: jd_decode failed (%d)", Res);
|
|
|
}
|
|
|
@@ -202,16 +208,23 @@ bool GDS_DrawJPEG( struct GDS_Device* Device, uint8_t *Source, int x, int y, int
|
|
|
uint8_t Ratio = XRatio < YRatio ? ceil(1/XRatio) : ceil(1/YRatio);
|
|
|
Ratio--; Ratio |= Ratio >> 1; Ratio |= Ratio >> 2; Ratio++;
|
|
|
while (Ratio >>= 1) N++;
|
|
|
+ if (N > 3) {
|
|
|
+ ESP_LOGW(TAG, "Image will not fit %dx%d", Decoder.width, Decoder.height);
|
|
|
+ N = 3;
|
|
|
+ }
|
|
|
Context.Width /= 1 << N;
|
|
|
Context.Height /= 1 << N;
|
|
|
}
|
|
|
|
|
|
// then place it
|
|
|
- if (Fit & GDS_IMAGE_CENTER_X) Context.XOfs = x + ((Device->Width - x) - Context.Width) / 2;
|
|
|
- if (Fit & GDS_IMAGE_CENTER_Y) Context.YOfs = y + ((Device->Height - y) - Context.Height) / 2;
|
|
|
+ if (Fit & GDS_IMAGE_CENTER_X) Context.XOfs = (Device->Width + x - Context.Width) / 2;
|
|
|
+ if (Fit & GDS_IMAGE_CENTER_Y) Context.YOfs = (Device->Height + y - Context.Height) / 2;
|
|
|
|
|
|
+ Context.XMin = x - Context.XOfs;
|
|
|
+ Context.YMin = y - Context.YOfs;
|
|
|
+
|
|
|
// do decompress & draw
|
|
|
- Res = jd_decomp(&Decoder, OutHandlerDirect, N > 3 ? 3 : N);
|
|
|
+ Res = jd_decomp(&Decoder, OutHandlerDirect, N);
|
|
|
if (Res == JDR_OK) {
|
|
|
Ret = true;
|
|
|
} else {
|
philippe44