/*
* Function: XvMCCreateContext
* Description: Create a XvMC context for the given surface parameters.
* Arguments:
* display - Connection to the X server.
* port - XvPortID to use as avertised by the X connection.
* surface_type_id - Unique identifier for the Surface type.
* width - Width of the surfaces.
* height - Height of the surfaces.
* flags - one or more of the following
* XVMC_DIRECT - A direct rendered context is requested.
*
* Notes: surface_type_id and width/height parameters must match those
* returned by XvMCListSurfaceTypes.
* Returns: Status
*/
_X_EXPORT Status XvMCCreateContext(Display * display, XvPortID port,
int surface_type_id, int width, int height,
int flags, XvMCContext * context)
{
Status ret;
CARD32 *priv_data = NULL;
struct intel_xvmc_hw_context *comm;
int major, minor;
int error_base;
int event_base;
int priv_count;
/* Verify Obvious things first */
if (!display || !context)
return BadValue;
if (!(flags & XVMC_DIRECT)) {
XVMC_ERR("Indirect Rendering not supported! Using Direct.");
return BadValue;
}
/*
Width, Height, and flags are checked against surface_type_id
and port for validity inside the X server, no need to check
here.
*/
context->surface_type_id = surface_type_id;
context->width = (unsigned short)((width + 15) & ~15);
context->height = (unsigned short)((height + 15) & ~15);
context->flags = flags;
context->port = port;
if (!XvMCQueryExtension(display, &event_base, &error_base)) {
XVMC_ERR("XvMCExtension is not available!");
return BadValue;
}
ret = XvMCQueryVersion(display, &major, &minor);
if (ret) {
XVMC_ERR
("XvMCQueryVersion Failed, unable to determine protocol version.");
return ret;
}
/* XXX: major and minor could be checked in future for XvMC
* protocol capability (i.e H.264/AVC decode available)
*/
/*
Pass control to the X server to create a drm_context_t for us and
validate the with/height and flags.
*/
if ((ret =
_xvmc_create_context(display, context, &priv_count, &priv_data))) {
XVMC_ERR("Unable to create XvMC Context.");
return ret;
}
comm = (struct intel_xvmc_hw_context *)priv_data;
if (xvmc_driver == NULL || xvmc_driver->type != comm->type) {
switch (comm->type) {
case XVMC_I915_MPEG2_MC:
xvmc_driver = &i915_xvmc_mc_driver;
break;
case XVMC_I965_MPEG2_MC:
xvmc_driver = &i965_xvmc_mc_driver;
break;
case XVMC_I965_MPEG2_VLD:
xvmc_driver = &xvmc_vld_driver;
break;
case XVMC_I945_MPEG2_VLD:
default:
XVMC_ERR("unimplemented xvmc type %d", comm->type);
XFree(priv_data);
priv_data = NULL;
return BadValue;
}
}
if (xvmc_driver == NULL || xvmc_driver->type != comm->type) {
XVMC_ERR("fail to load xvmc driver for type %d\n", comm->type);
return BadValue;
}
XVMC_INFO("decoder type is %s", intel_xvmc_decoder_string(comm->type));
/* check DRI2 */
ret = Success;
xvmc_driver->fd = -1;
ret = dri2_connect(display);
if (ret != Success) {
XFree(priv_data);
context->privData = NULL;
if (xvmc_driver->fd >= 0)
close(xvmc_driver->fd);
xvmc_driver = NULL;
return ret;
}
if ((xvmc_driver->bufmgr =
intel_bufmgr_gem_init(xvmc_driver->fd, 1024 * 64)) == NULL) {
XVMC_ERR("Can't init bufmgr\n");
return BadAlloc;
}
drm_intel_bufmgr_gem_enable_reuse(xvmc_driver->bufmgr);
/* call driver hook.
* driver hook should free priv_data after return if success.*/
ret =
(xvmc_driver->create_context) (display, context, priv_count,
priv_data);
if (ret) {
XVMC_ERR("driver create context failed\n");
XFree(priv_data);
context->privData = NULL;
xvmc_driver = NULL;
return ret;
}
pthread_mutex_init(&xvmc_driver->ctxmutex, NULL);
intelInitBatchBuffer();
intel_xvmc_dump_open();
return Success;
}
static Bool
GetPortId(Display *dpy, XvPortID *portID, int *surface_type)
{
int i, j, k, numAdapt, numTypes, eventBase, errorBase;
XvMCSurfaceInfo *surfaceInfo;
XvAdaptorInfo *info;
Bool result = 0;
if(!XvMCQueryExtension(dpy, &eventBase, &errorBase))
return 0;
if(Success != XvQueryAdaptors(dpy,DefaultRootWindow(dpy),&numAdapt,&info))
return 0;
for(i = 0; i < numAdapt; i++) {
if(info[i].type & XvImageMask) {
surfaceInfo = XvMCListSurfaceTypes(display, info[i].base_id,
&numTypes);
if(surfaceInfo) {
for(j = 0; j < numTypes; j++) {
if((surfaceInfo[j].chroma_format == XVMC_CHROMA_FORMAT_420) &&
(surfaceInfo[j].max_width >= coded_picture_width) &&
(surfaceInfo[j].max_height >= coded_picture_height) &&
((surfaceInfo[j].mc_type == (XVMC_MOCOMP | XVMC_MPEG_2)) ||
(surfaceInfo[j].mc_type == (XVMC_IDCT | XVMC_MPEG_2))))
{
if(use_idct != -1) {
if(use_idct == 1) {
if(surfaceInfo[j].mc_type ==
(XVMC_MOCOMP | XVMC_MPEG_2))
continue;
} else {
if(surfaceInfo[j].mc_type ==
(XVMC_IDCT | XVMC_MPEG_2))
continue;
}
}
for(k = 0; k < info[i].num_ports; k++) {
/* try to grab a port */
if(Success == XvGrabPort(dpy, info[i].base_id + k,
CurrentTime))
{
*portID = info[i].base_id + k;
*surface_type = surfaceInfo[j].surface_type_id;
result = 1;
break;
}
}
if(result) {
if(surfaceInfo[j].flags & XVMC_INTRA_UNSIGNED)
unsignedIntra = 1;
if(surfaceInfo[j].mc_type == (XVMC_IDCT | XVMC_MPEG_2))
useIDCT = 1;
break;
}
}
}
XFree(surfaceInfo);
}
}
}
XvFreeAdaptorInfo(info);
return result;
}
