struct frame_buf *
vpu_framebuf_alloc(int strideY, int height)
{
struct frame_buf *fb;
int size;
fb = get_framebuf();
if (fb == NULL)
return NULL;
size = strideY * height;
memset(&(fb->desc), 0, sizeof(vpu_mem_desc));
fb->desc.size = (size * 3 / 2);
if (IOGetPhyMem(&fb->desc))
{
DBG("--- Frame buffer allocation failed ---\n");
memset(&(fb->desc), 0, sizeof(vpu_mem_desc));
return NULL;
}
fb->addrY = fb->desc.phy_addr;
fb->addrCb = fb->addrY + size;
fb->addrCr = fb->addrCb + (size>>2);
fb->desc.virt_uaddr = IOGetVirtMem(&(fb->desc));
if (fb->desc.virt_uaddr <= 0)
{
IOFreePhyMem(&fb->desc);
memset(&(fb->desc), 0, sizeof(vpu_mem_desc));
return NULL;
}
return fb;
}
struct frame_buf *framebuf_alloc(int stdMode, int format, int strideY, int height)
{
struct frame_buf *fb;
int err;
int divX, divY;
fb = get_framebuf();
if(fb == NULL)
return NULL;
divX = (format == MODE420 || format == MODE422) ? 2 : 1;
divY = (format == MODE420 || format == MODE224) ? 2 : 1;
memset(&(fb->desc), 0, sizeof(vpu_mem_desc));
fb->desc.size = (strideY * height + strideY / divX * height / divY * 2);
if(cpu_is_mx37() || cpu_is_mx5x())
fb->desc.size += strideY / divX * height / divY;
err = IOGetPhyMem(&fb->desc);
if(err)
{
printf("Frame buffer allocation failure\n");
memset(&(fb->desc), 0, sizeof(vpu_mem_desc));
return NULL;
}
fb->addrY = fb->desc.phy_addr;
fb->addrCb = fb->addrY + strideY * height;
fb->addrCr = fb->addrCb + strideY / divX * height / divY;
fb->strideY = strideY;
fb->strideC = strideY / divX;
if(cpu_is_mx37() || cpu_is_mx5x())
{
if(stdMode == STD_MJPG)
fb->mvColBuf = fb->addrCr;
else
fb->mvColBuf = fb->addrCr + strideY / divX * height / divY;
}
fb->desc.virt_uaddr = IOGetVirtMem(&(fb->desc));
if(fb->desc.virt_uaddr <= 0)
{
IOFreePhyMem(&fb->desc);
memset(&(fb->desc), 0, sizeof(vpu_mem_desc));
return NULL;
}
return fb;
}
