[PATCH 14/26] video: Update truetype console to support copy buffer

Simon Glass
2020-05-19T23:10:46Z

Update the implementation to keep a track of what it changes in the frame
buffer and then tell the copy buffer about it. Use the special
vidconsole_memmove() helper so that memmove() operations are also
reflected in the copy buffer.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

drivers/video/console_truetype.c | 43 +++++++++++++++++++++++---------
1 file changed, 31 insertions(+), 12 deletions(-)

diff --git a/drivers/video/console_truetype.c b/drivers/video/console_truetype.c
index 5f7f03904b..22b2ea7191 100644
--- a/drivers/video/console_truetype.c
+++ b/drivers/video/console_truetype.c
@@ -127,9 +127,9 @@ static int console_truetype_set_row(struct udevice *dev, uint row, int clr)
{
struct video_priv *vid_priv = dev_get_uclass_priv(dev->parent);
struct console_tt_priv *priv = dev_get_priv(dev);
- void *line;
+ void *end, *line;
int pixels = priv->font_size * vid_priv->line_length;
- int i;
+ int i, ret;

line = vid_priv->fb + row * priv->font_size * vid_priv->line_length;
switch (vid_priv->bpix) {
@@ -139,6 +139,7 @@ static int console_truetype_set_row(struct udevice *dev, uint row, int clr)

for (i = 0; i < pixels; i++)
*dst++ = clr;
+ end = dst;
break;
}
#endif
@@ -148,6 +149,7 @@ static int console_truetype_set_row(struct udevice *dev, uint row, int clr)

for (i = 0; i < pixels; i++)
*dst++ = clr;
+ end = dst;
break;
}
#endif
@@ -157,12 +159,16 @@ static int console_truetype_set_row(struct udevice *dev, uint row, int clr)

for (i = 0; i < pixels; i++)
*dst++ = clr;
+ end = dst;
break;
}
#endif
default:
return -ENOSYS;
}
+ ret = vidconsole_sync_copy(dev, line, end);
+ if (ret)
+ return ret;

return 0;
}
@@ -174,11 +180,14 @@ static int console_truetype_move_rows(struct udevice *dev, uint rowdst,
struct console_tt_priv *priv = dev_get_priv(dev);
void *dst;
void *src;
- int i, diff;
+ int i, diff, ret;

dst = vid_priv->fb + rowdst * priv->font_size * vid_priv->line_length;
src = vid_priv->fb + rowsrc * priv->font_size * vid_priv->line_length;
- memmove(dst, src, priv->font_size * vid_priv->line_length * count);
+ ret = vidconsole_memmove(dev, dst, src, priv->font_size *
+ vid_priv->line_length * count);
+ if (ret)
+ return ret;

/* Scroll up our position history */
diff = (rowsrc - rowdst) * priv->font_size;
@@ -203,8 +212,8 @@ static int console_truetype_putc_xy(struct udevice *dev, uint x, uint y,
struct pos_info *pos;
u8 *bits, *data;
int advance;
- void *line;
- int row;
+ void *start, *end, *line;
+ int row, ret;

/* First get some basic metrics about this character */
stbtt_GetCodepointHMetrics(font, ch, &advance, &lsb);
@@ -253,11 +262,12 @@ static int console_truetype_putc_xy(struct udevice *dev, uint x, uint y,

/* Figure out where to write the character in the frame buffer */
bits = data;
- line = vid_priv->fb + y * vid_priv->line_length +
+ start = vid_priv->fb + y * vid_priv->line_length +
VID_TO_PIXEL(x) * VNBYTES(vid_priv->bpix);
linenum = priv->baseline + yoff;
if (linenum > 0)
- line += linenum * vid_priv->line_length;
+ start += linenum * vid_priv->line_length;
+ line = start;

/*
* Write a row at a time, converting the 8bpp image into the colour
@@ -286,6 +296,7 @@ static int console_truetype_putc_xy(struct udevice *dev, uint x, uint y,
*dst++ &= out;
bits++;
}
+ end = dst;
break;
}
#endif
@@ -307,6 +318,7 @@ static int console_truetype_putc_xy(struct udevice *dev, uint x, uint y,
*dst++ &= out;
bits++;
}
+ end = dst;
break;
}
#endif
@@ -317,6 +329,9 @@ static int console_truetype_putc_xy(struct udevice *dev, uint x, uint y,

line += vid_priv->line_length;
}
+ ret = vidconsole_sync_copy(dev, start, line);
+ if (ret)
+ return ret;
free(data);

return width_frac;
@@ -340,12 +355,13 @@ static int console_truetype_erase(struct udevice *dev, int xstart, int ystart,
int xend, int yend, int clr)
{
struct video_priv *vid_priv = dev_get_uclass_priv(dev->parent);
- void *line;
+ void *start, *line;
int pixels = xend - xstart;
- int row, i;
+ int row, i, ret;

- line = vid_priv->fb + ystart * vid_priv->line_length;
- line += xstart * VNBYTES(vid_priv->bpix);
+ start = vid_priv->fb + ystart * vid_priv->line_length;
+ start += xstart * VNBYTES(vid_priv->bpix);
+ line = start;
for (row = ystart; row < yend; row++) {
switch (vid_priv->bpix) {
#ifdef CONFIG_VIDEO_BPP8
@@ -380,6 +396,9 @@ static int console_truetype_erase(struct udevice *dev, int xstart, int ystart,
}
line += vid_priv->line_length;
}
+ ret = vidconsole_sync_copy(dev, start, line);
+ if (ret)
+ return ret;

return 0;
}
--
2.26.2.761.g0e0b3e54be-goog