mangavalk/lcdproc
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glcd driver: Add direct support for framebuffer with paged memory layout.

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'struct glcd_framebuf' now contains a layout type which can either be
FB_TYPE_LINEAR (this is the default) or FB_TYPE_VPAGED. This actually affects
the drawing function and the frame-buffer memory calculation. A new 'size'
field is added to store the pre-calculated length.

Adopt existing driver to make use of the new feature (currently only glcd2usb
driver).
This commit is contained in:
mmdolze
2013-01-17 21:44:30 +00:00
parent 2f8df7fb35
commit 37563b5fd7
7 changed files with 91 additions and 77 deletions
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server/drivers/glcd-png.c
+5 -5
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@@ -63,12 +63,12 @@ glcd_png_init(Driver *drvthis)
}
p->ct_data = ct_data;
ct_data->backingstore = malloc(FB_BYTES_TOTAL);
ct_data->backingstore = malloc(p->framebuf.size);
if (ct_data->backingstore == NULL) {
report(RPT_ERR, "GLCD/png: unable to allocate backing store");
return -1;
}
memset(ct_data->backingstore, 0x00, FB_BYTES_TOTAL);
memset(ct_data->backingstore, 0x00, p->framebuf.size);
debug(RPT_DEBUG, "GLCD/png: init() done");
@@ -92,7 +92,7 @@ glcd_png_blit(PrivateData *p)
png_bytep row_pointer;
/* Check if framebufer has changed. If not there's nothing to do */
if (memcmp(p->framebuf.data, ct_data->backingstore, FB_BYTES_TOTAL) == 0)
if (memcmp(p->framebuf.data, ct_data->backingstore, p->framebuf.size) == 0)
return;
snprintf(filename, sizeof(filename), "/tmp/lcdproc%06d.png", num++);
@@ -134,7 +134,7 @@ glcd_png_blit(PrivateData *p)
row_pointer = p->framebuf.data;
for (row = 0; row < p->framebuf.px_height; row++) {
png_write_row(png_ptr, row_pointer);
row_pointer += BYTES_PER_LINE;
row_pointer += p->framebuf.bytesPerLine;
}
png_write_end(png_ptr, NULL);
@@ -142,7 +142,7 @@ glcd_png_blit(PrivateData *p)
fp = NULL;
png_destroy_write_struct(&png_ptr, &info_ptr);
memcpy(ct_data->backingstore, p->framebuf.data, FB_BYTES_TOTAL);
memcpy(ct_data->backingstore, p->framebuf.data, p->framebuf.size);
return;