qemu/console.h
aliguori 7b5d76dae3 DisplayAllocator interface (Stefano Stabellini)
Hi all,
this patch adds a DisplayAllocator interface that allows display
frontends (sdl in particular) to provide a preallocated display buffer
for the graphical backend to use.

Whenever a graphical backend cannot use
qemu_create_displaysurface_from because its own internal pixel format
cannot be exported directly (text mode or graphical mode with color
depth 8 or 24), it creates another display buffer in memory using
qemu_create_displaysurface and does the conversion.
This new buffer needs to be blitted into the sdl surface buffer every time
we need to update portions of the screen.
We can avoid this using the DisplayAllocator interace: sdl provides its
own implementation of qemu_create_displaysurface, giving back the sdl
surface buffer directly (as we used to do before the DisplayState
changes).
Since the buffer returned by sdl could be in bgr format we need to put
back in the handlers of that case.

This approach is good if the two following conditions are true:

1) the sdl surface is a software surface that resides in main memory;

2) the host display color depth is either 16 or 32 bpp.

If first condition is false we can have bad performances using sdl
and vnc together.
If the second condition is false performances are certainly not going to
improve but they shouldn't get worse either.

The first condition is always true, at least on linux/X11 systems; but I
believe is true also on other platforms.
The second condition is true in the vast majority of the cases.

This patch should also have the good side effect of solving the sdl
2D slowness malc was reporting on MacOS, because SDL_BlitSurface is not
going to be called anymore when the guest is in text mode or 24bpp.
However the root problem is still present so I suspect we may
still see some slowness on MacOS when the guest is in 32 or 16 bpp.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6839 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-13 15:02:13 +00:00

328 lines
9.8 KiB
C

#ifndef CONSOLE_H
#define CONSOLE_H
#include "qemu-char.h"
/* keyboard/mouse support */
#define MOUSE_EVENT_LBUTTON 0x01
#define MOUSE_EVENT_RBUTTON 0x02
#define MOUSE_EVENT_MBUTTON 0x04
/* in ms */
#define GUI_REFRESH_INTERVAL 30
typedef void QEMUPutKBDEvent(void *opaque, int keycode);
typedef void QEMUPutMouseEvent(void *opaque, int dx, int dy, int dz, int buttons_state);
typedef struct QEMUPutMouseEntry {
QEMUPutMouseEvent *qemu_put_mouse_event;
void *qemu_put_mouse_event_opaque;
int qemu_put_mouse_event_absolute;
char *qemu_put_mouse_event_name;
/* used internally by qemu for handling mice */
struct QEMUPutMouseEntry *next;
} QEMUPutMouseEntry;
void qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque);
QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
void *opaque, int absolute,
const char *name);
void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry);
void kbd_put_keycode(int keycode);
void kbd_mouse_event(int dx, int dy, int dz, int buttons_state);
int kbd_mouse_is_absolute(void);
struct mouse_transform_info_s {
/* Touchscreen resolution */
int x;
int y;
/* Calibration values as used/generated by tslib */
int a[7];
};
void do_info_mice(Monitor *mon);
void do_mouse_set(Monitor *mon, int index);
/* keysym is a unicode code except for special keys (see QEMU_KEY_xxx
constants) */
#define QEMU_KEY_ESC1(c) ((c) | 0xe100)
#define QEMU_KEY_BACKSPACE 0x007f
#define QEMU_KEY_UP QEMU_KEY_ESC1('A')
#define QEMU_KEY_DOWN QEMU_KEY_ESC1('B')
#define QEMU_KEY_RIGHT QEMU_KEY_ESC1('C')
#define QEMU_KEY_LEFT QEMU_KEY_ESC1('D')
#define QEMU_KEY_HOME QEMU_KEY_ESC1(1)
#define QEMU_KEY_END QEMU_KEY_ESC1(4)
#define QEMU_KEY_PAGEUP QEMU_KEY_ESC1(5)
#define QEMU_KEY_PAGEDOWN QEMU_KEY_ESC1(6)
#define QEMU_KEY_DELETE QEMU_KEY_ESC1(3)
#define QEMU_KEY_CTRL_UP 0xe400
#define QEMU_KEY_CTRL_DOWN 0xe401
#define QEMU_KEY_CTRL_LEFT 0xe402
#define QEMU_KEY_CTRL_RIGHT 0xe403
#define QEMU_KEY_CTRL_HOME 0xe404
#define QEMU_KEY_CTRL_END 0xe405
#define QEMU_KEY_CTRL_PAGEUP 0xe406
#define QEMU_KEY_CTRL_PAGEDOWN 0xe407
void kbd_put_keysym(int keysym);
/* consoles */
#define QEMU_BIG_ENDIAN_FLAG 0x01
#define QEMU_ALLOCATED_FLAG 0x02
struct PixelFormat {
uint8_t bits_per_pixel;
uint8_t bytes_per_pixel;
uint8_t depth; /* color depth in bits */
uint32_t rmask, gmask, bmask, amask;
uint8_t rshift, gshift, bshift, ashift;
uint8_t rmax, gmax, bmax, amax;
uint8_t rbits, gbits, bbits, abits;
};
struct DisplaySurface {
uint8_t flags;
int width;
int height;
int linesize; /* bytes per line */
uint8_t *data;
struct PixelFormat pf;
};
struct DisplayChangeListener {
int idle;
uint64_t gui_timer_interval;
void (*dpy_update)(struct DisplayState *s, int x, int y, int w, int h);
void (*dpy_resize)(struct DisplayState *s);
void (*dpy_setdata)(struct DisplayState *s);
void (*dpy_refresh)(struct DisplayState *s);
void (*dpy_copy)(struct DisplayState *s, int src_x, int src_y,
int dst_x, int dst_y, int w, int h);
void (*dpy_fill)(struct DisplayState *s, int x, int y,
int w, int h, uint32_t c);
void (*dpy_text_cursor)(struct DisplayState *s, int x, int y);
struct DisplayChangeListener *next;
};
struct DisplayAllocator {
DisplaySurface* (*create_displaysurface)(int width, int height);
DisplaySurface* (*resize_displaysurface)(DisplaySurface *surface, int width, int height);
void (*free_displaysurface)(DisplaySurface *surface);
};
struct DisplayState {
struct DisplaySurface *surface;
void *opaque;
struct QEMUTimer *gui_timer;
struct DisplayAllocator* allocator;
struct DisplayChangeListener* listeners;
void (*mouse_set)(int x, int y, int on);
void (*cursor_define)(int width, int height, int bpp, int hot_x, int hot_y,
uint8_t *image, uint8_t *mask);
struct DisplayState *next;
};
void register_displaystate(DisplayState *ds);
DisplayState *get_displaystate(void);
DisplaySurface* qemu_create_displaysurface_from(int width, int height, int bpp,
int linesize, uint8_t *data);
PixelFormat qemu_different_endianness_pixelformat(int bpp);
PixelFormat qemu_default_pixelformat(int bpp);
extern struct DisplayAllocator default_allocator;
DisplayAllocator *register_displayallocator(DisplayState *ds, DisplayAllocator *da);
DisplaySurface* defaultallocator_create_displaysurface(int width, int height);
DisplaySurface* defaultallocator_resize_displaysurface(DisplaySurface *surface, int width, int height);
void defaultallocator_free_displaysurface(DisplaySurface *surface);
static inline DisplaySurface* qemu_create_displaysurface(DisplayState *ds, int width, int height)
{
return ds->allocator->create_displaysurface(width, height);
}
static inline DisplaySurface* qemu_resize_displaysurface(DisplayState *ds, int width, int height)
{
return ds->allocator->resize_displaysurface(ds->surface, width, height);
}
static inline void qemu_free_displaysurface(DisplayState *ds)
{
ds->allocator->free_displaysurface(ds->surface);
}
static inline int is_surface_bgr(DisplaySurface *surface)
{
if (surface->pf.bits_per_pixel == 32 && surface->pf.rshift == 0)
return 1;
else
return 0;
}
static inline int is_buffer_shared(DisplaySurface *surface)
{
return (!(surface->flags & QEMU_ALLOCATED_FLAG));
}
static inline void register_displaychangelistener(DisplayState *ds, DisplayChangeListener *dcl)
{
dcl->next = ds->listeners;
ds->listeners = dcl;
}
static inline void dpy_update(DisplayState *s, int x, int y, int w, int h)
{
struct DisplayChangeListener *dcl = s->listeners;
while (dcl != NULL) {
dcl->dpy_update(s, x, y, w, h);
dcl = dcl->next;
}
}
static inline void dpy_resize(DisplayState *s)
{
struct DisplayChangeListener *dcl = s->listeners;
while (dcl != NULL) {
dcl->dpy_resize(s);
dcl = dcl->next;
}
}
static inline void dpy_setdata(DisplayState *s)
{
struct DisplayChangeListener *dcl = s->listeners;
while (dcl != NULL) {
if (dcl->dpy_setdata) dcl->dpy_setdata(s);
dcl = dcl->next;
}
}
static inline void dpy_refresh(DisplayState *s)
{
struct DisplayChangeListener *dcl = s->listeners;
while (dcl != NULL) {
if (dcl->dpy_refresh) dcl->dpy_refresh(s);
dcl = dcl->next;
}
}
static inline void dpy_copy(struct DisplayState *s, int src_x, int src_y,
int dst_x, int dst_y, int w, int h) {
struct DisplayChangeListener *dcl = s->listeners;
while (dcl != NULL) {
if (dcl->dpy_copy)
dcl->dpy_copy(s, src_x, src_y, dst_x, dst_y, w, h);
else /* TODO */
dcl->dpy_update(s, dst_x, dst_y, w, h);
dcl = dcl->next;
}
}
static inline void dpy_fill(struct DisplayState *s, int x, int y,
int w, int h, uint32_t c) {
struct DisplayChangeListener *dcl = s->listeners;
while (dcl != NULL) {
if (dcl->dpy_fill) dcl->dpy_fill(s, x, y, w, h, c);
dcl = dcl->next;
}
}
static inline void dpy_cursor(struct DisplayState *s, int x, int y) {
struct DisplayChangeListener *dcl = s->listeners;
while (dcl != NULL) {
if (dcl->dpy_text_cursor) dcl->dpy_text_cursor(s, x, y);
dcl = dcl->next;
}
}
static inline int ds_get_linesize(DisplayState *ds)
{
return ds->surface->linesize;
}
static inline uint8_t* ds_get_data(DisplayState *ds)
{
return ds->surface->data;
}
static inline int ds_get_width(DisplayState *ds)
{
return ds->surface->width;
}
static inline int ds_get_height(DisplayState *ds)
{
return ds->surface->height;
}
static inline int ds_get_bits_per_pixel(DisplayState *ds)
{
return ds->surface->pf.bits_per_pixel;
}
static inline int ds_get_bytes_per_pixel(DisplayState *ds)
{
return ds->surface->pf.bytes_per_pixel;
}
typedef unsigned long console_ch_t;
static inline void console_write_ch(console_ch_t *dest, uint32_t ch)
{
cpu_to_le32wu((uint32_t *) dest, ch);
}
typedef void (*vga_hw_update_ptr)(void *);
typedef void (*vga_hw_invalidate_ptr)(void *);
typedef void (*vga_hw_screen_dump_ptr)(void *, const char *);
typedef void (*vga_hw_text_update_ptr)(void *, console_ch_t *);
DisplayState *graphic_console_init(vga_hw_update_ptr update,
vga_hw_invalidate_ptr invalidate,
vga_hw_screen_dump_ptr screen_dump,
vga_hw_text_update_ptr text_update,
void *opaque);
void vga_hw_update(void);
void vga_hw_invalidate(void);
void vga_hw_screen_dump(const char *filename);
void vga_hw_text_update(console_ch_t *chardata);
int is_graphic_console(void);
int is_fixedsize_console(void);
CharDriverState *text_console_init(const char *p);
void text_consoles_set_display(DisplayState *ds);
void console_select(unsigned int index);
void console_color_init(DisplayState *ds);
void qemu_console_resize(DisplayState *ds, int width, int height);
void qemu_console_copy(DisplayState *ds, int src_x, int src_y,
int dst_x, int dst_y, int w, int h);
/* sdl.c */
void sdl_display_init(DisplayState *ds, int full_screen, int no_frame);
/* cocoa.m */
void cocoa_display_init(DisplayState *ds, int full_screen);
/* vnc.c */
void vnc_display_init(DisplayState *ds);
void vnc_display_close(DisplayState *ds);
int vnc_display_open(DisplayState *ds, const char *display);
int vnc_display_password(DisplayState *ds, const char *password);
void do_info_vnc(Monitor *mon);
/* curses.c */
void curses_display_init(DisplayState *ds, int full_screen);
#endif