diff options
| author | Simon Glass <sjg@chromium.org> | 2015-05-13 07:02:28 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-06-10 19:26:55 -0600 |
| commit | 8d379f179a18d6e9f3d7af8873c942a6834fb780 (patch) | |
| tree | ea8c2c04288dcc5c1a385a1e47602d47ee35bfd0 /common | |
| parent | 1c3dbe56f720132723a89709ef5f2baeb52b44d4 (diff) | |
lcd: Support colour lookup table on 16bpp display in BMP images
For 16-bit-per-pixel displays it is useful to support 8 bit-per-pixel
images to reduce image size. Add support for this when drawing BMP images.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common')
| -rw-r--r-- | common/lcd.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/common/lcd.c b/common/lcd.c index c7f28302cb1..5a52fe4287f 100644 --- a/common/lcd.c +++ b/common/lcd.c @@ -578,6 +578,8 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y) unsigned long width, height, byte_width; unsigned long pwidth = panel_info.vl_col; unsigned colors, bpix, bmp_bpix; + int hdr_size; + struct bmp_color_table_entry *palette = bmp->color_table; if (!bmp || !(bmp->header.signature[0] == 'B' && bmp->header.signature[1] == 'M')) { @@ -589,6 +591,8 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y) width = get_unaligned_le32(&bmp->header.width); height = get_unaligned_le32(&bmp->header.height); bmp_bpix = get_unaligned_le16(&bmp->header.bit_count); + hdr_size = get_unaligned_le16(&bmp->header.size); + debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix); colors = 1 << bmp_bpix; @@ -613,8 +617,8 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y) return 1; } - debug("Display-bmp: %d x %d with %d colors\n", - (int)width, (int)height, (int)colors); + debug("Display-bmp: %d x %d with %d colors, display %d\n", + (int)width, (int)height, (int)colors, 1 << bpix); if (bmp_bpix == 8) lcd_set_cmap(bmp, colors); @@ -641,6 +645,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y) cmap_base = configuration_get_cmap(); #ifdef CONFIG_LCD_BMP_RLE8 u32 compression = get_unaligned_le32(&bmp->header.compression); + debug("compressed %d %d\n", compression, BMP_BI_RLE8); if (compression == BMP_BI_RLE8) { if (bpix != 16) { /* TODO implement render code for bpix != 16 */ @@ -663,7 +668,19 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y) if (bpix != 16) { fb_put_byte(&fb, &bmap); } else { - *(uint16_t *)fb = cmap_base[*(bmap++)]; + struct bmp_color_table_entry *entry; + uint val; + + if (cmap_base) { + val = cmap_base[*bmap]; + } else { + entry = &palette[*bmap]; + val = entry->blue >> 3 | + entry->green >> 2 << 5 | + entry->red >> 3 << 11; + } + *(uint16_t *)fb = val; + bmap++; fb += sizeof(uint16_t) / sizeof(*fb); } } |