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[common] lgmp: separate transport configuration

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Move LGMP queue tunables into LGMPConfig.h and keep compatibility
aliases in KVMFR.h. Promote color-transform, SDR white-level, and
damage-limit definitions to transport-neutral common types so non-LGMP
transports do not depend on the KVMFR wire format.
This commit is contained in:
Geoffrey McRae
2026-07-20 05:09:43 +00:00
parent 5196c5503a
commit d4b3506e6c
11 changed files with 81 additions and 22 deletions
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27
common/include/common/KVMFR.h
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@@ -26,22 +26,16 @@
#include <stdint.h>
#include <stdbool.h>
#include "types.h"
#include "LGMPConfig.h"
#define KVMFR_MAGIC "KVMFR---"
#define KVMFR_VERSION 23
// Fallback used by producers that cannot report the source display's SDR
// white level. IDD frames override this with IDDCX_METADATA2::SdrWhiteLevel.
#define KVMFR_SDR_WHITE_LEVEL_DEFAULT 203
#define KVMFR_MAX_DAMAGE_RECTS 64
#define LGMP_Q_POINTER 1
#define LGMP_Q_FRAME 2
#define LGMP_Q_FRAME_LEN 2
#define LGMP_Q_POINTER_LEN 32
#define KVMFR_SDR_WHITE_LEVEL_DEFAULT LG_SDR_WHITE_LEVEL_DEFAULT
#define KVMFR_MAX_DAMAGE_RECTS LG_MAX_FRAME_DAMAGE_RECTS
#ifdef _MSC_VER
// don't warn on zero length arrays
@@ -144,25 +138,18 @@ KVMFRCursor;
enum
{
KVMFR_COLOR_TRANSFORM_MATRIX = 0x1,
KVMFR_COLOR_TRANSFORM_LUT = 0x2,
KVMFR_COLOR_TRANSFORM_MATRIX = LG_COLOR_TRANSFORM_MATRIX,
KVMFR_COLOR_TRANSFORM_LUT = LG_COLOR_TRANSFORM_LUT,
};
typedef uint32_t KVMFRColorTransformFlags;
typedef LGColorTransformFlags KVMFRColorTransformFlags;
// Optional payload appended to KVMFRCursor when
// CURSOR_FLAG_COLOR_TRANSFORM is present. The matrix is an XYZ-to-XYZ
// adjustment; the LUT is applied after encoding to the active wire transfer
// function. Four LUT components keep the payload directly uploadable as an
// RGBA32F texture, with alpha reserved and set to 1.0.
typedef struct KVMFRColorTransform
{
KVMFRColorTransformFlags flags;
float matrix[3][4];
float scalar;
float lut[4096][4];
}
KVMFRColorTransform;
typedef LGColorTransform KVMFRColorTransform;
enum
{