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/*
* Pure Data Packet system module. - x window glue code (fairly tied to pd and pdp)
* Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
// this code is fairly tied to pd and pdp. serves mainly as reusable glue code
// for pdp_xv, pdp_glx, pdp_3d_windowcontext, ...
#include <string.h>
#include "pdp_xwindow.h"
#include "pdp_xvideo.h"
#include "pdp_post.h"
#include "pdp_packet.h"
#define D if(0)
/************************************* PDP_XVIDEO ************************************/
static void pdp_xvideo_create_xvimage(t_pdp_xvideo *xvid, int width, int height)
{
int i;
long size;
//post("pdp_xvideo_create_xvimage");
xvid->width = width;
xvid->height = height;
size = (xvid->width * xvid->height + (((xvid->width>>1)*(xvid->height>>1))<<1));
//post("create xvimage %d %d", xvid->width, xvid->height);
xvid->data = (unsigned char *)pdp_alloc(size);
for (i=0; i<size; i++) xvid->data[i] = i;
xvid->xvi = XvCreateImage(xvid->xdpy->dpy, xvid->xv_port, xvid->xv_format, (char *)xvid->data, xvid->width, xvid->height);
xvid->last_encoding = -1;
if ((!xvid->xvi) || (!xvid->data)) pdp_post ("ERROR CREATING XVIMAGE");
//pdp_post("created xvimag data:%x xvi:%x",xvid->data,xvid->xvi);
}
static void pdp_xvideo_destroy_xvimage(t_pdp_xvideo *xvid)
{
if(xvid->data) pdp_dealloc(xvid->data);
if (xvid->xvi) XFree(xvid->xvi);
xvid->xvi = 0;
xvid->data = 0;
}
void pdp_xvideo_display_packet(t_pdp_xvideo *xvid, t_pdp_xwindow *xwin, int packet)
{
t_pdp *header = pdp_packet_header(packet);
void *data = pdp_packet_data(packet);
t_bitmap * bm = pdp_packet_bitmap_info(packet);
unsigned int width, height, encoding, size, nbpixels;
/* some checks: only display when initialized and when pacet is bitmap YV12 */
if (!xvid->initialized) return;
if (!header) return;
if (!bm) return;
width = bm->width;
height = bm->height;
encoding = bm->encoding;
size = (width * height + (((width>>1)*(height>>1))<<1));
nbpixels = width * height;
if (PDP_BITMAP != header->type) return;
if (PDP_BITMAP_YV12 != encoding) return;
/* check if xvimage needs to be recreated */
if ((width != xvid->width) || (height != xvid->height)){
//pdp_post("pdp_xv: replace image");
pdp_xvideo_destroy_xvimage(xvid);
pdp_xvideo_create_xvimage(xvid, width, height);
}
/* copy the data to the XvImage buffer */
memcpy(xvid->data, data, size);
/* display */
XvPutImage(xvid->xdpy->dpy,xvid->xv_port, xwin->win,xwin->gc,xvid->xvi,
0,0,xvid->width,xvid->height, 0,0,xwin->winwidth,xwin->winheight);
XFlush(xvid->xdpy->dpy);
}
void pdp_xvideo_close(t_pdp_xvideo* xvid)
{
if (xvid->initialized){
if (xvid->xvi) pdp_xvideo_destroy_xvimage(xvid);
XvUngrabPort(xvid->xdpy->dpy, xvid->xv_port, CurrentTime);
xvid->xv_port = 0;
xvid->xdpy = 0;
xvid->last_encoding = -1;
xvid->initialized = false;
}
}
void pdp_xvideo_cleanup(t_pdp_xvideo* xvid)
{
// close xvideo port (and delete XvImage)
pdp_xvideo_close(xvid);
// no more dynamic data to free
}
void pdp_xvideo_free(t_pdp_xvideo* xvid){
pdp_xvideo_cleanup(xvid);
pdp_dealloc(xvid);
}
void pdp_xvideo_init(t_pdp_xvideo *xvid)
{
xvid->xdpy = 0;
xvid->xv_format = FOURCC_YV12;
xvid->xv_port = 0;
xvid->width = 320;
xvid->height = 240;
xvid->data = 0;
xvid->xvi = 0;
xvid->initialized = 0;
xvid->last_encoding = -1;
}
t_pdp_xvideo *pdp_xvideo_new(void)
{
t_pdp_xvideo *xvid = pdp_alloc(sizeof(*xvid));
pdp_xvideo_init(xvid);
return xvid;
}
int pdp_xvideo_open_on_display(t_pdp_xvideo *xvid, t_pdp_xdisplay *d)
{
unsigned int ver, rel, req, ev, err, i, j;
unsigned int adaptors;
int formats;
XvAdaptorInfo *ai;
if (xvid->initialized) return 1;
if (!d) return 0;
xvid->xdpy = d;
if (Success != XvQueryExtension(xvid->xdpy->dpy,&ver,&rel,&req,&ev,&err)) return 0;
/* find + lock port */
if (Success != XvQueryAdaptors(xvid->xdpy->dpy,DefaultRootWindow(xvid->xdpy->dpy),&adaptors,&ai))
return 0;
for (i = 0; i < adaptors; i++) {
if ((ai[i].type & XvInputMask) && (ai[i].type & XvImageMask)) {
for (j=0; j < ai[i].num_ports; j++){
if (Success != XvGrabPort(xvid->xdpy->dpy,ai[i].base_id+j,CurrentTime)) {
//fprintf(stderr,"INFO: Xvideo port %ld on adapter %d: is busy, skipping\n",ai[i].base_id+j, i);
}
else {
xvid->xv_port = ai[i].base_id + j;
goto breakout;
}
}
}
}
breakout:
XFree(ai);
if (0 == xvid->xv_port) return 0;
pdp_post("pdp_xvideo: grabbed port %d on adaptor %d", xvid->xv_port, i);
xvid->initialized = 1;
pdp_xvideo_create_xvimage(xvid, xvid->width, xvid->height);
return 1;
}
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