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#include <assert.h>
#include <X11/Xlibint.h>
#include <X11/extensions/XvMClib.h>
#include <pipe/p_screen.h>
#include <pipe/p_video_context.h>
#include <pipe/p_video_state.h>
#include <pipe/p_state.h>
#include <vl_winsys.h>
#include <util/u_memory.h>
#include "xvmc_private.h"
static Status Validate(Display *dpy, XvPortID port, int surface_type_id,
unsigned int width, unsigned int height, int flags,
bool *found_port, int *screen, int *chroma_format, int *mc_type)
{
bool found_surface = false;
XvAdaptorInfo *adaptor_info;
unsigned int num_adaptors;
int num_types;
unsigned int max_width, max_height;
Status ret;
assert(dpy);
assert(found_port);
assert(screen);
assert(chroma_format);
assert(mc_type);
*found_port = false;
for (unsigned int i = 0; i < XScreenCount(dpy); ++i)
{
ret = XvQueryAdaptors(dpy, XRootWindow(dpy, i), &num_adaptors, &adaptor_info);
if (ret != Success)
return ret;
for (unsigned int j = 0; j < num_adaptors && !*found_port; ++j)
{
for (unsigned int k = 0; k < adaptor_info[j].num_ports && !*found_port; ++k)
{
XvMCSurfaceInfo *surface_info;
if (adaptor_info[j].base_id + k != port)
continue;
*found_port = true;
surface_info = XvMCListSurfaceTypes(dpy, adaptor_info[j].base_id, &num_types);
if (!surface_info)
{
XvFreeAdaptorInfo(adaptor_info);
return BadAlloc;
}
for (unsigned int l = 0; l < num_types && !found_surface; ++l)
{
if (surface_info[l].surface_type_id != surface_type_id)
continue;
found_surface = true;
max_width = surface_info[l].max_width;
max_height = surface_info[l].max_height;
*chroma_format = surface_info[l].chroma_format;
*mc_type = surface_info[l].mc_type;
*screen = i;
}
XFree(surface_info);
}
}
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 pipe_video_profile ProfileToPipe(int xvmc_profile)
{
if (xvmc_profile & XVMC_MPEG_1)
assert(0);
if (xvmc_profile & XVMC_MPEG_2)
return PIPE_VIDEO_PROFILE_MPEG2_MAIN;
if (xvmc_profile & XVMC_H263)
assert(0);
if (xvmc_profile & XVMC_MPEG_4)
assert(0);
assert(0);
return -1;
}
static enum pipe_video_chroma_format FormatToPipe(int xvmc_format)
{
switch (xvmc_format)
{
case XVMC_CHROMA_FORMAT_420:
return PIPE_VIDEO_CHROMA_FORMAT_420;
case XVMC_CHROMA_FORMAT_422:
return PIPE_VIDEO_CHROMA_FORMAT_422;
case XVMC_CHROMA_FORMAT_444:
return PIPE_VIDEO_CHROMA_FORMAT_444;
default:
assert(0);
}
return -1;
}
Status XvMCCreateContext(Display *dpy, XvPortID port, int surface_type_id,
int width, int height, int flags, XvMCContext *context)
{
bool found_port;
int scrn;
int chroma_format;
int mc_type;
Status ret;
struct pipe_screen *screen;
struct pipe_video_context *vpipe;
XvMCContextPrivate *context_priv;
assert(dpy);
if (!context)
return XvMCBadContext;
ret = Validate(dpy, port, surface_type_id, width, height, flags,
&found_port, &scrn, &chroma_format, &mc_type);
/* Success and XvBadPort have the same value */
if (ret != Success || !found_port)
return ret;
context_priv = CALLOC(1, sizeof(XvMCContextPrivate));
if (!context_priv)
return BadAlloc;
/* TODO: Reuse screen if process creates another context */
screen = vl_screen_create(dpy, scrn);
if (!screen)
{
FREE(context_priv);
return BadAlloc;
}
vpipe = vl_video_create(screen, ProfileToPipe(mc_type),
FormatToPipe(chroma_format), width, height);
if (!vpipe)
{
screen->destroy(screen);
FREE(context_priv);
return BadAlloc;
}
context_priv->vpipe = vpipe;
context->context_id = XAllocID(dpy);
context->surface_type_id = surface_type_id;
context->width = width;
context->height = height;
context->flags = flags;
context->port = port;
context->privData = context_priv;
SyncHandle();
return Success;
}
Status XvMCDestroyContext(Display *dpy, XvMCContext *context)
{
struct pipe_screen *screen;
struct pipe_video_context *vpipe;
XvMCContextPrivate *context_priv;
assert(dpy);
if (!context || !context->privData)
return XvMCBadContext;
context_priv = context->privData;
vpipe = context_priv->vpipe;
pipe_surface_reference(&context_priv->backbuffer, NULL);
screen = vpipe->screen;
vpipe->destroy(vpipe);
screen->destroy(screen);
FREE(context_priv);
context->privData = NULL;
return Success;
}
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