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video: bmp: Update RLE8 support to use the write function

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Update this code to use write_pix8() rather than writing the pixels only
for a single supported display depth. This allows us to support any
depth.

Add some more tests too.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-11-19 13:23:55 -07:00 committed by Anatolij Gustschin
parent 51f92c1430
commit 646e169aa0
2 changed files with 65 additions and 22 deletions
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49
drivers/video/video_bmp.c
View file

@ -67,28 +67,37 @@ static void write_pix8(u8 *fb, uint bpix, struct bmp_color_table_entry *palette,
}
#ifdef CONFIG_VIDEO_BMP_RLE8
static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
static void draw_unencoded_bitmap(u8 **fbp, uint bpix, uchar *bmap,
struct bmp_color_table_entry *palette,
int cnt)
{
u8 *fb = *fbp;
while (cnt > 0) {
*(*fbp)++ = cmap[*bmap++];
write_pix8(fb, bpix, palette, bmap++);
fb += bpix / 8;
cnt--;
}
*fbp = fb;
}
static void draw_encoded_bitmap(ushort **fbp, ushort col, int cnt)
static void draw_encoded_bitmap(u8 **fbp, uint bpix,
struct bmp_color_table_entry *palette, u8 *bmap,
int cnt)
{
ushort *fb = *fbp;
u8 *fb = *fbp;
while (cnt > 0) {
*fb++ = col;
write_pix8(fb, bpix, palette, bmap);
fb += bpix / 8;
cnt--;
}
*fbp = fb;
}
static void video_display_rle8_bitmap(struct udevice *dev,
struct bmp_image *bmp, ushort *cmap,
struct bmp_image *bmp, uint bpix,
struct bmp_color_table_entry *palette,
uchar *fb, int x_off, int y_off,
ulong width, ulong height)
{
@ -97,6 +106,7 @@ static void video_display_rle8_bitmap(struct udevice *dev,
ulong cnt, runlen;
int x, y;
int decode = 1;
uint bytes_per_pixel = bpix / 8;
debug("%s\n", __func__);
bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
@ -112,8 +122,8 @@ static void video_display_rle8_bitmap(struct udevice *dev,
bmap += 2;
x = 0;
y--;
/* 16bpix, 2-byte per pixel, width should *2 */
fb -= (width * 2 + priv->line_length);
fb -= width * bytes_per_pixel +
priv->line_length;
break;
case BMP_RLE8_EOBMP:
/* end of bitmap */
@ -123,9 +133,9 @@ static void video_display_rle8_bitmap(struct udevice *dev,
/* delta run */
x += bmap[2];
y -= bmap[3];
/* 16bpix, 2-byte per pixel, x should *2 */
fb = (uchar *)(priv->fb + (y + y_off - 1)
* priv->line_length + (x + x_off) * 2);
fb = (uchar *)(priv->fb +
(y + y_off - 1) * priv->line_length +
(x + x_off) * bytes_per_pixel);
bmap += 4;
break;
default:
@ -139,8 +149,8 @@ static void video_display_rle8_bitmap(struct udevice *dev,
else
cnt = runlen;
draw_unencoded_bitmap(
(ushort **)&fb,
bmap, cmap, cnt);
&fb, bpix,
bmap, palette, cnt);
}
x += runlen;
}
@ -164,8 +174,8 @@ static void video_display_rle8_bitmap(struct udevice *dev,
cnt = width - x;
else
cnt = runlen;
draw_encoded_bitmap((ushort **)&fb,
cmap[bmap[1]], cnt);
draw_encoded_bitmap(&fb, bpix, palette,
&bmap[1], cnt);
}
x += runlen;
}
@ -311,13 +321,8 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
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 */
printf("Error: only support 16 bpix");
return -EPROTONOSUPPORT;
}
video_display_rle8_bitmap(dev, bmp, cmap_base, fb, x,
y, width, height);
video_display_rle8_bitmap(dev, bmp, bpix, palette, fb,
x, y, width, height);
break;
}
#endif

38
test/dm/video.c
View file

@ -373,6 +373,44 @@ static int dm_test_video_bmp_comp(struct unit_test_state *uts)
}
DM_TEST(dm_test_video_bmp_comp, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test drawing a bitmap file on a 32bpp display */
static int dm_test_video_comp_bmp32(struct unit_test_state *uts)
{
struct udevice *dev;
ulong addr;
ut_assertok(uclass_find_first_device(UCLASS_VIDEO, &dev));
ut_assertnonnull(dev);
ut_assertok(sandbox_sdl_set_bpp(dev, VIDEO_BPP32));
ut_assertok(read_file(uts, "tools/logos/denx.bmp", &addr));
ut_assertok(video_bmp_display(dev, addr, 0, 0, false));
ut_asserteq(2024, compress_frame_buffer(uts, dev));
return 0;
}
DM_TEST(dm_test_video_comp_bmp32, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test drawing a bitmap file on a 8bpp display */
static int dm_test_video_comp_bmp8(struct unit_test_state *uts)
{
struct udevice *dev;
ulong addr;
ut_assertok(uclass_find_first_device(UCLASS_VIDEO, &dev));
ut_assertnonnull(dev);
ut_assertok(sandbox_sdl_set_bpp(dev, VIDEO_BPP8));
ut_assertok(read_file(uts, "tools/logos/denx.bmp", &addr));
ut_assertok(video_bmp_display(dev, addr, 0, 0, false));
ut_asserteq(1247, compress_frame_buffer(uts, dev));
return 0;
}
DM_TEST(dm_test_video_comp_bmp8, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test TrueType console */
static int dm_test_video_truetype(struct unit_test_state *uts)
{