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#include <assert.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/extensions/XvMC.h>
#include <vl_context.h>
/*
* XvMC defines 64 element blocks (8x8 elements).
* Elements are 8 bits when they represent color values,
* 9 bits when they reprecent DCT coefficients, we
* store them in 2 bytes in either case. DCT coefficients
* can be signed or unsigned, at our option.
*/
#define BLOCK_SIZE (64 * 2)
Status XvMCCreateBlocks(Display *display, XvMCContext *context, unsigned int num_blocks, XvMCBlockArray *blocks)
{
struct vl_context *vl_ctx;
assert(display);
if (!context)
return XvMCBadContext;
if (num_blocks == 0)
return BadValue;
assert(blocks);
vl_ctx = context->privData;
assert(display == vl_ctx->display);
blocks->context_id = context->context_id;
blocks->num_blocks = num_blocks;
blocks->blocks = malloc(BLOCK_SIZE * num_blocks);
/* Since we don't have a VL type for blocks, set privData to the display so we can catch mismatches */
blocks->privData = display;
return Success;
}
Status XvMCDestroyBlocks(Display *display, XvMCBlockArray *blocks)
{
assert(display);
assert(blocks);
assert(display == blocks->privData);
free(blocks->blocks);
return Success;
}
Status XvMCCreateMacroBlocks(Display *display, XvMCContext *context, unsigned int num_blocks, XvMCMacroBlockArray *blocks)
{
struct vl_context *vl_ctx;
assert(display);
if (!context)
return XvMCBadContext;
if (num_blocks == 0)
return BadValue;
assert(blocks);
vl_ctx = context->privData;
assert(display == vl_ctx->display);
blocks->context_id = context->context_id;
blocks->num_blocks = num_blocks;
blocks->macro_blocks = malloc(sizeof(XvMCMacroBlock) * num_blocks);
/* Since we don't have a VL type for blocks, set privData to the display so we can catch mismatches */
blocks->privData = display;
return Success;
}
Status XvMCDestroyMacroBlocks(Display *display, XvMCMacroBlockArray *blocks)
{
assert(display);
assert(blocks);
assert(display == blocks->privData);
free(blocks->macro_blocks);
return Success;
}
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