framebuffer.h (2383B)
1 #ifndef QEMU_FRAMEBUFFER_H 2 #define QEMU_FRAMEBUFFER_H 3 4 #include "exec/memory.h" 5 6 /* Framebuffer device helper routines. */ 7 8 typedef void (*drawfn)(void *, uint8_t *, const uint8_t *, int, int); 9 10 /* framebuffer_update_memory_section: Update framebuffer 11 * #MemoryRegionSection, for example if the framebuffer is switched to 12 * a different memory area. 13 * 14 * @mem_section: Output #MemoryRegionSection, to be passed to 15 * framebuffer_update_display(). 16 * @root: #MemoryRegion within which the framebuffer lies 17 * @base: Base address of the framebuffer within @root. 18 * @rows: Height of the screen. 19 * @src_width: Number of bytes in framebuffer memory between two rows. 20 */ 21 void framebuffer_update_memory_section( 22 MemoryRegionSection *mem_section, 23 MemoryRegion *root, 24 hwaddr base, 25 unsigned rows, 26 unsigned src_width); 27 28 /* framebuffer_update_display: Draw the framebuffer on a surface. 29 * 30 * @ds: #DisplaySurface to draw to. 31 * @mem_section: #MemoryRegionSection provided by 32 * framebuffer_update_memory_section(). 33 * @cols: Width the screen. 34 * @rows: Height of the screen. 35 * @src_width: Number of bytes in framebuffer memory between two rows. 36 * @dest_row_pitch: Number of bytes in the surface data between two rows. 37 * Negative if the framebuffer is stored in the opposite order (e.g. 38 * bottom-to-top) compared to the framebuffer. 39 * @dest_col_pitch: Number of bytes in the surface data between two pixels. 40 * Negative if the framebuffer is stored in the opposite order (e.g. 41 * right-to-left) compared to the framebuffer. 42 * @invalidate: True if the function should redraw the whole screen 43 * without checking the DIRTY_MEMORY_VGA dirty bitmap. 44 * @fn: Drawing function to be called for each row that has to be drawn. 45 * @opaque: Opaque pointer passed to @fn. 46 * @first_row: Pointer to an integer, receives the number of the first row 47 * that was drawn (either the first dirty row, or 0 if @invalidate is true). 48 * @last_row: Pointer to an integer, receives the number of the last row that 49 * was drawn (either the last dirty row, or @rows-1 if @invalidate is true). 50 */ 51 void framebuffer_update_display( 52 DisplaySurface *ds, 53 MemoryRegionSection *mem_section, 54 int cols, 55 int rows, 56 int src_width, 57 int dest_row_pitch, 58 int dest_col_pitch, 59 int invalidate, 60 drawfn fn, 61 void *opaque, 62 int *first_row, 63 int *last_row); 64 65 #endif