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#ifndef QEMU_FRAMEBUFFER_H
#define QEMU_FRAMEBUFFER_H
#include "exec/memory.h"
/* Framebuffer device helper routines. */
typedef void (*drawfn)(void *, uint8_t *, const uint8_t *, int, int);
/* framebuffer_update_memory_section: Update framebuffer
* #MemoryRegionSection, for example if the framebuffer is switched to
* a different memory area.
*
* @mem_section: Output #MemoryRegionSection, to be passed to
* framebuffer_update_display().
* @root: #MemoryRegion within which the framebuffer lies
* @base: Base address of the framebuffer within @root.
* @rows: Height of the screen.
* @src_width: Number of bytes in framebuffer memory between two rows.
*/
void framebuffer_update_memory_section(
MemoryRegionSection *mem_section,
MemoryRegion *root,
hwaddr base,
unsigned rows,
unsigned src_width);
/* framebuffer_update_display: Draw the framebuffer on a surface.
*
* @ds: #DisplaySurface to draw to.
* @mem_section: #MemoryRegionSection provided by
* framebuffer_update_memory_section().
* @cols: Width the screen.
* @rows: Height of the screen.
* @src_width: Number of bytes in framebuffer memory between two rows.
* @dest_row_pitch: Number of bytes in the surface data between two rows.
* Negative if the framebuffer is stored in the opposite order (e.g.
* bottom-to-top) compared to the framebuffer.
* @dest_col_pitch: Number of bytes in the surface data between two pixels.
* Negative if the framebuffer is stored in the opposite order (e.g.
* right-to-left) compared to the framebuffer.
* @invalidate: True if the function should redraw the whole screen
* without checking the DIRTY_MEMORY_VGA dirty bitmap.
* @fn: Drawing function to be called for each row that has to be drawn.
* @opaque: Opaque pointer passed to @fn.
* @first_row: Pointer to an integer, receives the number of the first row
* that was drawn (either the first dirty row, or 0 if @invalidate is true).
* @last_row: Pointer to an integer, receives the number of the last row that
* was drawn (either the last dirty row, or @rows-1 if @invalidate is true).
*/
void framebuffer_update_display(
DisplaySurface *ds,
MemoryRegionSection *mem_section,
int cols,
int rows,
int src_width,
int dest_row_pitch,
int dest_col_pitch,
int invalidate,
drawfn fn,
void *opaque,
int *first_row,
int *last_row);
#endif
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