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Change pixel format to 32 bits per pixel

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Until now, Genode's framebuffer session interface was based on the
RGB565 pixel format. This patch changes the pixel format to 32-bit
XRGB where the X part is ignored. It adapts all graphical applications
and device drivers accordingly.

The patch also adjusts the users of the drivers_interactive packages,
assigning 64 MiB RAM and 1500 caps to the drivers subsystem, which is
sufficient for covering high resolutions at 32 bits per pixel and to
accommodate multi-component USB HID input stacks.

Fixes #3784
This commit is contained in:
Norman Feske
2020-06-16 15:46:59 +02:00
parent 6119e03081
commit ef741ef80d
112 changed files with 500 additions and 696 deletions
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55
repos/os/include/framebuffer_session/framebuffer_session.h
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@ -18,12 +18,15 @@
#include <base/signal.h>
#include <dataspace/capability.h>
#include <session/session.h>
#include <os/surface.h>
namespace Framebuffer {
struct Mode;
struct Session;
struct Session_client;
using Area = Genode::Surface_base::Area;
}
@ -32,57 +35,11 @@ namespace Framebuffer {
*/
struct Framebuffer::Mode
{
public:
Area area;
/**
* Pixel formats
*/
enum Format { INVALID, RGB565 };
Genode::size_t bytes_per_pixel() const { return 4; }
static Genode::size_t bytes_per_pixel(Format format)
{
if (format == RGB565) return 2;
return 0;
}
private:
int _width = 0, _height = 0;
Format _format = INVALID;
/*
* Helpers for sanitized access. The sanitizing is needed whenever
* a 'Mode' object is transferred via RPC from an untrusted client.
*/
static Format _sanitized(Format f) { return f == RGB565 ? RGB565 : INVALID; }
static int _sanitized(int v) { return v >= 0 ? v : 0; }
public:
Mode() { }
Mode(int width, int height, Format format)
: _width(width), _height(height), _format(format) { }
int width() const { return _sanitized(_width); }
int height() const { return _sanitized(_height); }
Format format() const { return _sanitized(_format); }
/**
* Return number of bytes per pixel
*/
Genode::size_t bytes_per_pixel() const {
return bytes_per_pixel(format()); }
void print(Genode::Output &out) const
{
Genode::print(out, width(), "x", height(), "@");
switch (format()) {
case RGB565: Genode::print(out, "RGB565"); break;
default: Genode::print(out, "INVALID"); break;
}
}
void print(Genode::Output &out) const { Genode::print(out, area); }
};