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/**
* @file directfb.c DirectFB video display module
*
* Copyright (C) 2010 Creytiv.com
* Copyright (C) 2013 Andreas Shimokawa <andi@fischlustig.de>
*/
#include <re.h>
#include <rem.h>
#include <baresip.h>
#include <directfb.h>
struct vidisp_st {
const struct vidisp *vd; /**< Inheritance (1st) */
struct vidsz size; /**< Current size */
IDirectFBWindow *window; /**< DirectFB Window */
IDirectFBSurface *surface; /**< Surface for pixels */
IDirectFBDisplayLayer *layer; /**< Display layer */
};
static IDirectFB *dfb;
static struct vidisp *vid;
static void destructor(void *arg)
{
struct vidisp_st *st = arg;
if (st->surface)
st->surface->Release(st->surface);
if (st->window)
st->window->Release(st->window);
if (st->layer)
st->layer->Release(st->layer);
}
static int alloc(struct vidisp_st **stp, const struct vidisp *vd,
struct vidisp_prm *prm, const char *dev,
vidisp_resize_h *resizeh, void *arg)
{
struct vidisp_st *st;
int err = 0;
/* Not used by DirectFB */
(void) prm;
(void) dev;
(void) resizeh;
(void) arg;
st = mem_zalloc(sizeof(*st), destructor);
if (!st)
return ENOMEM;
st->vd = vd;
dfb->GetDisplayLayer(dfb, DLID_PRIMARY, &st->layer);
if (err)
mem_deref(st);
else
*stp = st;
return err;
}
static int display(struct vidisp_st *st, const char *title,
const struct vidframe *frame)
{
void *pixels;
int pitch, i;
unsigned h;
uint8_t *p;
(void) title;
if (!vidsz_cmp(&st->size, &frame->size)) {
if (st->size.w && st->size.h) {
info("directfb: reset: %u x %u ---> %u x %u\n",
st->size.w, st->size.h,
frame->size.w, frame->size.h);
}
if (st->surface) {
st->surface->Release(st->surface);
st->surface = NULL;
}
if (st->window) {
st->window->Release(st->window);
st->window = NULL;
}
}
if (!st->window) {
DFBWindowDescription desc;
desc.flags = DWDESC_WIDTH|DWDESC_HEIGHT|DWDESC_PIXELFORMAT;
desc.width = frame->size.w;
desc.height = frame->size.h;
desc.pixelformat = DSPF_I420;
st->layer->CreateWindow(st->layer, &desc, &st->window);
st->size = frame->size;
st->window->SetOpacity(st->window, 0xff);
st->window->GetSurface(st->window, &st->surface);
}
st->surface->Lock(st->surface, DSLF_WRITE, &pixels, &pitch);
p = pixels;
for (i=0; i<3; i++) {
const uint8_t *s = frame->data[i];
const unsigned stp = frame->linesize[0] / frame->linesize[i];
const unsigned sz = frame->size.w / stp;
for (h = 0; h < frame->size.h; h += stp) {
memcpy(p, s, sz);
s += frame->linesize[i];
p += (pitch / stp);
}
}
st->surface->Unlock(st->surface);
/* Update the screen! */
st->surface->Flip(st->surface, 0, 0);
return 0;
}
static void hide(struct vidisp_st *st)
{
if (!st || !st->window)
return;
st->window->SetOpacity(st->window, 0x00);
}
static int module_init(void)
{
int err = 0;
DFBResult ret;
ret = DirectFBInit(NULL, NULL);
if (ret) {
DirectFBError("DirectFBInit() failed", ret);
return (int) ret;
}
ret = DirectFBCreate(&dfb);
if (ret) {
DirectFBError("DirectFBCreate() failed", ret);
return (int) ret;
}
err = vidisp_register(&vid, baresip_vidispl(),
"directfb", alloc, NULL, display, hide);
if (err)
return err;
return 0;
}
static int module_close(void)
{
vid = mem_deref(vid);
if (dfb) {
dfb->Release(dfb);
dfb = NULL;
}
return 0;
}
EXPORT_SYM const struct mod_export DECL_EXPORTS(directfb) = {
"directfb",
"vidisp",
module_init,
module_close
};
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