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/*
* renderxv.c - XVideo rendering.
*
* Written by
* Dag Lem <resid@nimrod.no>
*
* This file is part of VICE, the Versatile Commodore Emulator.
* See README for copyright notice.
*
* 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., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA.
*
*/
/* The PAL Y/C and PAL Composite emulation is based on work by John
Selck <graham@cruise.de>. The Xv probing and allocation code is
loosely based on testxv.c (by André Werthmann) and VideoLAN. */
#include "vice.h"
#ifdef HAVE_XVIDEO
#include "renderxv.h"
#include "video.h"
#include "video/video-resources.h"
#include <stdio.h>
#include <string.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if defined(__QNX__) || defined(MINIX_SUPPORT)
Status XShmAttach(Display *display, XShmSegmentInfo *shminfo)
{
return 0;
}
Status XShmDetach(Display *display, XShmSegmentInfo *shminfo)
{
return 0;
}
#endif
#ifdef MINIX_SUPPORT
typedef long key_t;
struct ipc_perm {
key_t key;
unsigned short uid;
unsigned short gid;
unsigned short cuid;
unsigned short cgid;
unsigned short mode;
unsigned short seq;
};
struct shmid_ds {
struct ipc_perm shm_perm;
int shm_segsz;
time_t shm_atime;
time_t shm_dtime;
time_t shm_ctime;
unsigned short shm_cpid;
unsigned short shm_lpid;
short shm_nattch;
unsigned short shm_npages;
unsigned long *shm_pages;
};
#define IPC_PRIVATE ((key_t)0)
#define IPC_CREAT 0x0200
#define IPC_RMID 0x1000
int shmget(key_t key, int size, int shmflag)
{
return -1;
}
void *shmat(int shmid, const void *shmaddr, int shmflag)
{
}
int shmctl(int shmid, int cmd, struct shmid_ds *buf)
{
return -1;
}
int shmdt(const void *shmaddr)
{
return -1;
}
#endif
/* YUV formats in preferred order. */
fourcc_t fourcc_list[] = {
/* YUV 4:2:2 formats: */
{ FOURCC_UYVY },
{ FOURCC_YUY2 },
{ FOURCC_YVYU },
/* YUV 4:1:1 formats: */
{ FOURCC_YV12 },
{ FOURCC_I420 },
{ FOURCC_IYUV }, /* IYUV is a duplicate of I420. */
};
int find_yuv_port(Display* display, XvPortID* port, fourcc_t* format)
{
int i, j, k;
/* XvQueryExtension */
unsigned int version, release, request_base, event_base, error_base;
/* XvQueryAdaptors */
unsigned int num_adaptors;
XvAdaptorInfo* adaptor_info = NULL;
XvPortID port_id;
/* XvListImageFormats */
int num_formats;
XvImageFormatValues* format_list = NULL;
switch (XvQueryExtension(display, &version, &release, &request_base, &event_base, &error_base)) {
case Success:
break;
case XvBadExtension:
printf("XvQueryExtension returned XvBadExtension.\n");
return 0;
case XvBadAlloc:
printf("XvQueryExtension returned XvBadAlloc.\n");
return 0;
default:
printf("XvQueryExtension returned unknown error.\n");
return 0;
}
switch (XvQueryAdaptors(display, DefaultRootWindow(display), &num_adaptors, &adaptor_info)) {
case Success:
break;
case XvBadExtension:
printf("XvQueryAdaptors returned XvBadExtension.\n");
return 0;
case XvBadAlloc:
printf("XvQueryAdaptors returned XvBadAlloc.\n");
return 0;
default:
printf("XvQueryAdaptors returned unknown error.\n");
return 0;
}
/* Find YUV capable adaptor. */
for (i = 0; i < (int)num_adaptors; i++) {
if (!(adaptor_info[i].type & XvInputMask && adaptor_info[i].type & XvImageMask)) {
continue;
}
format_list = XvListImageFormats(display, adaptor_info[i].base_id, &num_formats);
for (j = 0; j < (int)(sizeof(fourcc_list) / sizeof(*fourcc_list)); j++) {
if (format->id && fourcc_list[j].id != format->id) {
continue;
}
for (k = 0; k < num_formats; k++) {
if (format_list[k].id != fourcc_list[j].id) {
continue;
}
for (port_id = adaptor_info[i].base_id; port_id < adaptor_info[i].base_id + adaptor_info[i].num_ports; port_id++) {
if (XvGrabPort(display, port_id, CurrentTime) != Success) {
continue;
}
*port = port_id;
*format = fourcc_list[j];
XFree(format_list);
XvFreeAdaptorInfo(adaptor_info);
return 1;
}
}
}
XFree(format_list);
}
XvFreeAdaptorInfo(adaptor_info);
printf("No suitable Xv YUV adaptor/port available.\n");
return 0;
}
XvImage* create_yuv_image(Display* display, XvPortID port, fourcc_t format, int width, int height, XShmSegmentInfo* shminfo)
{
XvImage* image;
if (shminfo) {
if (!(image = XvShmCreateImage(display, port, format.id, NULL, width, height, shminfo))) {
printf("Unable to create shm XvImage\n");
return NULL;
}
if ((shminfo->shmid = shmget(IPC_PRIVATE, image->data_size, IPC_CREAT | 0777)) == -1) {
printf("Unable to allocate shared memory\n");
XFree(image);
return NULL;
}
if (!(shminfo->shmaddr = shmat(shminfo->shmid, 0, 0))) {
printf("Unable to attach shared memory\n");
XFree(image);
shmctl(shminfo->shmid, IPC_RMID, 0);
return NULL;
}
shminfo->readOnly = False;
image->data = shminfo->shmaddr;
if (!XShmAttach(display, shminfo)) {
printf("XShmAttach failed\n");
XFree(image);
shmctl(shminfo->shmid, IPC_RMID, 0);
shmdt(shminfo->shmaddr);
return NULL;
}
/* Send image to X server. This instruction is required, since having
* built a Shm XImage and not using it causes an error on XCloseDisplay. */
XSync(display, False);
/* Mark the segment to be automatically removed when the last
attachment is broken (i.e. on shmdt or process exit). */
shmctl(shminfo->shmid, IPC_RMID, 0);
} else {
if (!(image = XvCreateImage(display, port, format.id, NULL, width, height))) {
printf("Unable to create XvImage\n");
return NULL;
}
image->data = malloc(image->data_size);
}
return image;
}
void destroy_yuv_image(Display* display, XvImage* image, XShmSegmentInfo* shminfo)
{
if (shminfo) {
XShmDetach(display, shminfo);
XFree(image);
shmdt(shminfo->shmaddr);
} else {
XFree(image);
}
}
void display_yuv_image(Display* display, XvPortID port, Drawable d, GC gc, XvImage* image, XShmSegmentInfo* shminfo,
int src_x, int src_y, unsigned int src_w, unsigned int src_h, unsigned int dest_w, unsigned int dest_h,
double aspect_ratio)
{
int dest_x = 0, dest_y = 0;
/* Keep aspect ratio of src image. */
if (dest_w * src_h < src_w * aspect_ratio * dest_h) {
dest_y = dest_h;
dest_h = dest_w * src_h / (src_w * aspect_ratio);
dest_y = (dest_y - dest_h) / 2;
} else {
dest_x = dest_w;
dest_w = dest_h * src_w * aspect_ratio / src_h;
dest_x = (dest_x - dest_w) / 2;
}
if (shminfo) {
XvShmPutImage(display, port, d, gc, image, src_x, src_y, src_w, src_h, dest_x, dest_y, dest_w, dest_h, False);
} else {
XvPutImage(display, port, d, gc, image, src_x, src_y, src_w, src_h, dest_x, dest_y, dest_w, dest_h);
}
}
#endif /* HAVE_XVIDEO */
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