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#include <assert.h>
#include <X11/Xlib.h>
#include <X11/extensions/XvMClib.h>
#include <vl_context.h>
#include <vl_winsys.h>
static Status Validate(Display *display, XvPortID port, int surface_type_id, unsigned int width, unsigned int height, int flags, int *chroma_format)
{
unsigned int found_port = 0;
unsigned int found_surface = 0;
XvAdaptorInfo *adaptor_info;
unsigned int num_adaptors;
int num_types;
unsigned int max_width, max_height;
Status ret;
unsigned int i, j, k;
assert(display && chroma_format);
ret = XvQueryAdaptors(display, XDefaultRootWindow(display), &num_adaptors, &adaptor_info);
if (ret != Success)
return ret;
/* Scan through all adaptors looking for this port and surface */
for (i = 0; i < num_adaptors && !found_port; ++i)
{
/* Scan through all ports of this adaptor looking for our port */
for (j = 0; j < adaptor_info[i].num_ports && !found_port; ++j)
{
/* If this is our port, scan through all its surfaces looking for our surface */
if (adaptor_info[i].base_id + j == port)
{
XvMCSurfaceInfo *surface_info;
found_port = 1;
surface_info = XvMCListSurfaceTypes(display, adaptor_info[i].base_id, &num_types);
if (surface_info)
{
for (k = 0; k < num_types && !found_surface; ++k)
{
if (surface_info[k].surface_type_id == surface_type_id)
{
found_surface = 1;
max_width = surface_info[k].max_width;
max_height = surface_info[k].max_height;
*chroma_format = surface_info[k].chroma_format;
}
}
XFree(surface_info);
}
else
{
XvFreeAdaptorInfo(adaptor_info);
return BadAlloc;
}
}
}
}
XvFreeAdaptorInfo(adaptor_info);
if (!found_port)
return XvBadPort;
if (!found_surface)
return BadMatch;
if (width > max_width || height > max_height)
return BadValue;
if (flags != XVMC_DIRECT && flags != 0)
return BadValue;
return Success;
}
static enum VL_FORMAT FormatToVL(int xvmc_format)
{
enum VL_FORMAT vl_format;
switch (xvmc_format)
{
case XVMC_CHROMA_FORMAT_420:
{
vl_format = VL_FORMAT_YCBCR_420;
break;
}
case XVMC_CHROMA_FORMAT_422:
{
vl_format = VL_FORMAT_YCBCR_422;
break;
}
case XVMC_CHROMA_FORMAT_444:
{
vl_format = VL_FORMAT_YCBCR_444;
break;
}
default:
assert(0);
}
return vl_format;
}
Status XvMCCreateContext(Display *display, XvPortID port, int surface_type_id, int width, int height, int flags, XvMCContext *context)
{
int chroma_format;
Status ret;
struct VL_CONTEXT *vl_ctx;
struct pipe_context *pipe;
assert(display);
if (!context)
return XvMCBadContext;
ret = Validate(display, port, surface_type_id, width, height, flags, &chroma_format);
if (ret != Success)
return ret;
pipe = create_pipe_context(display, XDefaultScreen(display));
assert(pipe);
vlCreateContext(display, pipe, width, height, FormatToVL(chroma_format), &vl_ctx);
context->context_id = XAllocID(display);
context->surface_type_id = surface_type_id;
context->width = width;
context->height = height;
context->flags = flags;
context->port = port;
context->privData = vl_ctx;
return Success;
}
Status XvMCDestroyContext(Display *display, XvMCContext *context)
{
struct VL_CONTEXT *vl_ctx;
struct pipe_context *pipe;
assert(display);
if (!context)
return XvMCBadContext;
vl_ctx = context->privData;
assert(display == vl_ctx->display);
pipe = vl_ctx->pipe;
vlDestroyContext(vl_ctx);
destroy_pipe_context(pipe);
return Success;
}
/* XXX: The following are here temporarily, need to be implemented in the DDX driver */
/* TODO: Figure out which of these need to be in DDX, which are better off in DDX, which can stay */
Bool XvMCQueryExtension(Display *display, int *event_base, int *err_base)
{
*event_base = 0;
*err_base = 0;
return True;
}
Status XvMCQueryVersion(Display *display, int *major, int *minor)
{
*major = 1;
*minor = 0;
return Success;
}
XvMCSurfaceInfo* XvMCListSurfaceTypes(Display *display, XvPortID port, int *num)
{
XvMCSurfaceInfo *surface_info = calloc(1, sizeof(XvMCSurfaceInfo));
*num = 1;
surface_info->chroma_format = XVMC_CHROMA_FORMAT_420;
surface_info->max_width = 2048;
surface_info->max_height = 2048;
surface_info->mc_type = XVMC_IDCT | XVMC_MPEG_2;
surface_info->surface_type_id = 123; /* FIXME: XAllocID(display)*/;
surface_info->flags |= XVMC_INTRA_UNSIGNED;
return surface_info;
}
XvImageFormatValues* XvMCListSubpictureTypes(Display* display, XvPortID port, int surface_type_id, int *count_return)
{
/* TODO */
*count_return = 0;
return NULL;
}
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