From: Timur Tabi timur@freescale.com
Add support for 4bpp bitmaps, currently only for GDF_32BIT_X888RGB frame buffer format.
Signed-off-by: Timur Tabi timur@freescale.com Signed-off-by: Anatolij Gustschin agust@denx.de --- Hi Timur,
I slighlty modified original patch, the result is this v2. Hope this is okay.
Anatolij
v2: - slightly changed commit message - fixed too long lines (> 80) - added info output about unsupported frame buffer formats
drivers/video/cfb_console.c | 38 +++++++++++++++++++++++++++++++++++++- 1 files changed, 37 insertions(+), 1 deletions(-)
diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c index 3d047f2..dd849c2 100644 --- a/drivers/video/cfb_console.c +++ b/drivers/video/cfb_console.c @@ -1118,8 +1118,44 @@ int video_display_bitmap (ulong bmp_image, int x, int y) } #endif
- /* We handle only 8bpp or 24 bpp bitmap */ + /* We handle only 4, 8, or 24 bpp bitmaps */ switch (le16_to_cpu (bmp->header.bit_count)) { + case 4: + padded_line -= width / 2; + ycount = height; + + switch (VIDEO_DATA_FORMAT) { + case GDF_32BIT_X888RGB: + while (ycount--) { + WATCHDOG_RESET (); + /* + * Don't assume that 'width' is an + * even number + */ + for (xcount = 0; xcount < width; xcount++) { + uchar idx; + + if (xcount & 1) { + idx = *bmap & 0xF; + bmap++; + } else + idx = *bmap >> 4; + cte = bmp->color_table[idx]; + FILL_32BIT_X888RGB(cte.red, cte.green, + cte.blue); + } + bmap += padded_line; + fb -= (VIDEO_VISIBLE_COLS + width) * + VIDEO_PIXEL_SIZE; + } + break; + default: + puts("4bpp bitmap unsupported with current " + "video mode\n"); + break; + } + break; + case 8: padded_line -= width; if (VIDEO_DATA_FORMAT == GDF__8BIT_INDEX) {