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Complete display + add JPEG

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This commit is contained in:
philippe44
2020-02-26 23:27:28 -08:00
parent a9f1240965
commit 1ae8f80e53
10 changed files with 290 additions and 12 deletions
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14
components/display/core/gds.c
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@@ -69,21 +69,22 @@ void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2,
memset( Device->Framebuffer, Color == GDS_COLOR_BLACK ? 0 : 0xff, Device->FramebufferSize );
} else {
uint8_t _Color = Color == GDS_COLOR_BLACK ? 0: 0xff;
uint8_t Width = Device->Width;
uint8_t Width = Device->Width >> 3;
uint8_t *optr = Device->Framebuffer;
// try to do byte processing as much as possible
for (int r = y1; r <= y2;) {
int c = x1;
// for a row that is not on a boundary, no optimization possible
while (r & 0x07 && r <= y2) {
for (c = x1; c <= x2; c++) GDS_DrawPixelFast( Device, c, r, Color);
for (c = x1; c <= x2; c++) GDS_DrawPixelFast( Device, c, r, Color );
r++;
}
// go fast if we have more than 8 lines to write
if (r + 8 < y2) {
memset(Device->Framebuffer + Width * r / 8 + x1, _Color, x2 - x1 + 1);
if (r + 8 <= y2) {
memset(optr + Width * r + x1, _Color, x2 - x1 + 1);
r += 8;
} else while (r <= y2) {
for (c = x1; c <= x2; c++) GDS_DrawPixelFast( Device, c, r, Color);
for (c = x1; c <= x2; c++) GDS_DrawPixelFast( Device, c, r, Color );
r++;
}
}
@@ -95,12 +96,13 @@ void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2,
} else {
uint8_t _Color = Color | (Color << 4);
uint8_t Width = Device->Width;
uint8_t *optr = Device->Framebuffer;
// try to do byte processing as much as possible
for (int r = y1; r <= y2; r++) {
int c = x1;
if (c & 0x01) GDS_DrawPixelFast( Device, c++, r, Color);
int chunk = (x2 - c + 1) >> 1;
memset(Device->Framebuffer + ((r * Width + c) >> 1), _Color, chunk);
memset(optr + ((r * Width + c) >> 1), _Color, chunk);
if (c + chunk <= x2) GDS_DrawPixelFast( Device, x2, r, Color);
}
}