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Minor internal improvement (clean-up) to AlteraFramereader driver

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This commit is contained in:
Joel Bodenmann 2017-02-20 17:47:27 +01:00
parent aa474ef037
commit 35a4e07d66
1 changed files with 14 additions and 19 deletions
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33
drivers/gdisp/AlteraFramereader/gdisp_lld_alteraframereader.c
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@ -27,14 +27,9 @@
#error "Screen height (SCREEN_HEIGHT) not set in board file."
#endif
// ToDo: Merge this into fbPriv
typedef struct fbInfo {
typedef struct fbPriv {
void* pixels; // The pixel buffer
coord_t linelen; // The number of bytes per display line
} fbInfo;
typedef struct fbPriv {
fbInfo fbi; // Display information
void* frame0;
void* frame1;
} fbPriv;
@ -43,8 +38,8 @@ typedef struct fbPriv {
/* Driver local routines . */
/*===========================================================================*/
#define PIXIL_POS(g, x, y) ((y) * ((fbPriv *)(g)->priv)->fbi.linelen + (x) * sizeof(LLDCOLOR_TYPE))
#define PIXEL_ADDR(g, pos) ((LLDCOLOR_TYPE *)(((char *)((fbPriv *)(g)->priv)->fbi.pixels)+pos))
#define PIXIL_POS(g, x, y) ((y) * ((fbPriv *)(g)->priv)->linelen + (x) * sizeof(LLDCOLOR_TYPE))
#define PIXEL_ADDR(g, pos) ((LLDCOLOR_TYPE *)(((char *)((fbPriv *)(g)->priv)->pixels)+pos))
#define PRIV(g) ((fbPriv *)g->priv)
/*===========================================================================*/
@ -68,11 +63,11 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay* g)
g->g.Orientation = GDISP_ROTATE_0;
g->g.Powermode = powerOn;
g->board = 0;
PRIV(g)->fbi.linelen = g->g.Width * sizeof(LLDCOLOR_TYPE); // bytes per line
PRIV(g)->fbi.pixels = PRIV(g)->frame0;
PRIV(g)->linelen = g->g.Width * sizeof(LLDCOLOR_TYPE); // bytes per line
PRIV(g)->pixels = PRIV(g)->frame0;
// Make sure the MSB is set so we bypass the data cache of the NIOS-II soft core
PRIV(g)->fbi.pixels = (void*)((char*)PRIV(g)->fbi.pixels + 0x80000000);
PRIV(g)->pixels = (void*)((char*)PRIV(g)->pixels + 0x80000000);
// Stop the framereader to allow for configuration
IOWR(ALT_VIP_VFR_0_BASE, 0x00, 0x00); // stop for config
@ -218,24 +213,24 @@ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g)
return;
case GDISP_CONTROL_BUFFERS_SWAP:
if (PRIV(g)->fbi.pixels == PRIV(g)->frame0) {
PRIV(g)->fbi.pixels = PRIV(g)->frame1;
if (PRIV(g)->pixels == PRIV(g)->frame0) {
PRIV(g)->pixels = PRIV(g)->frame1;
IOWR(ALT_VIP_VFR_0_BASE, 0x03, 0x00);
} else {
PRIV(g)->fbi.pixels = PRIV(g)->frame0;
PRIV(g)->pixels = PRIV(g)->frame0;
IOWR(ALT_VIP_VFR_0_BASE, 0x03, 0x01);
}
return;
case GDISP_CONTROL_BUFFERS_ENABLE:
// Display frame0, draw to frame1
PRIV(g)->fbi.pixels = PRIV(g)->frame1;
PRIV(g)->pixels = PRIV(g)->frame1;
IOWR(ALT_VIP_VFR_0_BASE, 0x03, 0x00);
return;
case GDISP_CONTROL_BUFFERS_DISABLE:
// Display frame0, draw to frame0
PRIV(g)->fbi.pixels = PRIV(g)->frame0;
PRIV(g)->pixels = PRIV(g)->frame0;
IOWR(ALT_VIP_VFR_0_BASE, 0x03, 0x00);
return;
}
@ -252,8 +247,8 @@ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g)
uint8_t* line;
// Calculate some values required for further calculations
bytes_per_pixel = ((fbPriv*)g->priv)->fbi.linelen/g->g.Width; // must be 4
bytes_per_line = ((fbPriv*)g->priv)->fbi.linelen;
bytes_per_pixel = ((fbPriv*)g->priv)->linelen/g->g.Width; // must be 4
bytes_per_line = ((fbPriv*)g->priv)->linelen;
// Allocate line buffer
line = gfxAlloc(bytes_per_pixel * g->p.cx);
@ -264,7 +259,7 @@ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g)
}
// Calculate the address of the first pixel of the rectangle (top left corner)
addr = (int)((char *)((fbPriv *)g->priv)->fbi.pixels + (g->p.y * bytes_per_line) + (g->p.x * bytes_per_pixel));
addr = (int)((char *)((fbPriv *)g->priv)->pixels + (g->p.y * bytes_per_line) + (g->p.x * bytes_per_pixel));
// Copy filled line buffer to create rectangle
for (i = 0; i < g->p.cy; i++) {