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-rw-r--r--common/lcd.c178
1 files changed, 174 insertions, 4 deletions
diff --git a/common/lcd.c b/common/lcd.c
index 3017604734..4778655a26 100644
--- a/common/lcd.c
+++ b/common/lcd.c
@@ -696,6 +696,138 @@ static void splash_align_axis(int *axis, unsigned long panel_size,
}
#endif
+
+#ifdef CONFIG_LCD_BMP_RLE8
+
+#define BMP_RLE8_ESCAPE 0
+#define BMP_RLE8_EOL 0
+#define BMP_RLE8_EOBMP 1
+#define BMP_RLE8_DELTA 2
+
+static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
+ int cnt)
+{
+ while (cnt > 0) {
+ *(*fbp)++ = cmap[*bmap++];
+ cnt--;
+ }
+}
+
+static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
+{
+ ushort *fb = *fbp;
+ int cnt_8copy = cnt >> 3;
+
+ cnt -= cnt_8copy << 3;
+ while (cnt_8copy > 0) {
+ *fb++ = c;
+ *fb++ = c;
+ *fb++ = c;
+ *fb++ = c;
+ *fb++ = c;
+ *fb++ = c;
+ *fb++ = c;
+ *fb++ = c;
+ cnt_8copy--;
+ }
+ while (cnt > 0) {
+ *fb++ = c;
+ cnt--;
+ }
+ (*fbp) = fb;
+}
+
+/*
+ * Do not call this function directly, must be called from
+ * lcd_display_bitmap.
+ */
+static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
+ int x_off, int y_off)
+{
+ uchar *bmap;
+ ulong width, height;
+ ulong cnt, runlen;
+ int x, y;
+ int decode = 1;
+
+ width = le32_to_cpu(bmp->header.width);
+ height = le32_to_cpu(bmp->header.height);
+ bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
+
+ x = 0;
+ y = height - 1;
+
+ while (decode) {
+ if (bmap[0] == BMP_RLE8_ESCAPE) {
+ switch (bmap[1]) {
+ case BMP_RLE8_EOL:
+ /* end of line */
+ bmap += 2;
+ x = 0;
+ y--;
+ /* 16bpix, 2-byte per pixel, width should *2 */
+ fb -= (width * 2 + lcd_line_length);
+ break;
+ case BMP_RLE8_EOBMP:
+ /* end of bitmap */
+ decode = 0;
+ break;
+ case BMP_RLE8_DELTA:
+ /* delta run */
+ x += bmap[2];
+ y -= bmap[3];
+ /* 16bpix, 2-byte per pixel, x should *2 */
+ fb = (uchar *) (lcd_base + (y + y_off - 1)
+ * lcd_line_length + (x + x_off) * 2);
+ bmap += 4;
+ break;
+ default:
+ /* unencoded run */
+ runlen = bmap[1];
+ bmap += 2;
+ if (y < height) {
+ if (x < width) {
+ if (x + runlen > width)
+ cnt = width - x;
+ else
+ cnt = runlen;
+ draw_unencoded_bitmap(
+ (ushort **)&fb,
+ bmap, cmap, cnt);
+ }
+ x += runlen;
+ }
+ bmap += runlen;
+ if (runlen & 1)
+ bmap++;
+ }
+ } else {
+ /* encoded run */
+ if (y < height) {
+ runlen = bmap[0];
+ if (x < width) {
+ /* aggregate the same code */
+ while (bmap[0] == 0xff &&
+ bmap[2] != BMP_RLE8_ESCAPE &&
+ bmap[1] == bmap[3]) {
+ runlen += bmap[2];
+ bmap += 2;
+ }
+ if (x + runlen > width)
+ cnt = width - x;
+ else
+ cnt = runlen;
+ draw_encoded_bitmap((ushort **)&fb,
+ cmap[bmap[1]], cnt);
+ }
+ x += runlen;
+ }
+ bmap += 2;
+ }
+ }
+}
+#endif
+
#if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
#define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
#else
@@ -729,7 +861,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
uchar *fb;
bmp_image_t *bmp=(bmp_image_t *)bmp_image;
uchar *bmap;
- ushort padded_line;
+ ushort padded_width;
unsigned long width, height, byte_width;
unsigned long pwidth = panel_info.vl_col;
unsigned colors, bpix, bmp_bpix;
@@ -816,7 +948,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
}
#endif
- padded_line = (width&0x3) ? ((width&~0x3)+4) : (width);
+ padded_width = (width&0x3) ? ((width&~0x3)+4) : (width);
#ifdef CONFIG_SPLASH_SCREEN_ALIGN
splash_align_axis(&x, pwidth, width);
@@ -835,6 +967,18 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
switch (bmp_bpix) {
case 1: /* pass through */
case 8:
+#ifdef CONFIG_LCD_BMP_RLE8
+ if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
+ if (bpix != 16) {
+ /* TODO implement render code for bpix != 16 */
+ printf("Error: only support 16 bpix");
+ return 1;
+ }
+ lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
+ break;
+ }
+#endif
+
if (bpix != 16)
byte_width = width;
else
@@ -850,7 +994,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
fb += sizeof(uint16_t) / sizeof(*fb);
}
}
- bmap += (width - padded_line);
+ bmap += (padded_width - width);
fb -= (byte_width + lcd_line_length);
}
break;
@@ -862,7 +1006,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
for (j = 0; j < width; j++)
fb_put_word(&fb, &bmap);
- bmap += (padded_line - width) * 2;
+ bmap += (padded_width - width) * 2;
fb -= (width * 2 + lcd_line_length);
}
break;
@@ -940,5 +1084,31 @@ static void *lcd_logo(void)
#endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
}
+void lcd_position_cursor(unsigned col, unsigned row)
+{
+ console_col = min(col, CONSOLE_COLS - 1);
+ console_row = min(row, CONSOLE_ROWS - 1);
+}
+
+int lcd_get_pixel_width(void)
+{
+ return panel_info.vl_col;
+}
+
+int lcd_get_pixel_height(void)
+{
+ return panel_info.vl_row;
+}
+
+int lcd_get_screen_rows(void)
+{
+ return CONSOLE_ROWS;
+}
+
+int lcd_get_screen_columns(void)
+{
+ return CONSOLE_COLS;
+}
+
/************************************************************************/
/************************************************************************/