1 files changed, 83 insertions, 0 deletions
diff --git a/third_party/dav1d/src/lf_mask.h b/third_party/dav1d/src/lf_mask.h
new file mode 100644
index 0000000000..5edf4a0932
--- /dev/null
+++ b/third_party/dav1d/src/lf_mask.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright © 2018-2021, VideoLAN and dav1d authors
+ * Copyright © 2018, Two Orioles, LLC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef DAV1D_SRC_LF_MASK_H
+#define DAV1D_SRC_LF_MASK_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "src/levels.h"
+
+typedef struct Av1FilterLUT {
+    uint8_t e[64];
+    uint8_t i[64];
+    uint64_t sharp[2];
+} Av1FilterLUT;
+
+typedef struct Av1RestorationUnit {
+    uint8_t /* enum Dav1dRestorationType */ type;
+    int8_t filter_h[3];
+    int8_t filter_v[3];
+    uint8_t sgr_idx;
+    int8_t sgr_weights[2];
+} Av1RestorationUnit;
+
+// each struct describes one 128x128 area (1 or 4 SBs), pre-superres-scaling
+typedef struct Av1Filter {
+    // each bit is 1 col
+    uint16_t filter_y[2 /* 0=col, 1=row */][32][3][2];
+    uint16_t filter_uv[2 /* 0=col, 1=row */][32][2][2];
+    int8_t cdef_idx[4]; // -1 means "unset"
+    uint16_t noskip_mask[16][2]; // for 8x8 blocks, but stored on a 4x8 basis
+} Av1Filter;
+
+// each struct describes one 128x128 area (1 or 4 SBs), post-superres-scaling
+typedef struct Av1Restoration {
+    Av1RestorationUnit lr[3][4];
+} Av1Restoration;
+
+void dav1d_create_lf_mask_intra(Av1Filter *lflvl, uint8_t (*level_cache)[4],
+                                const ptrdiff_t b4_stride,
+                                const uint8_t (*level)[8][2], int bx, int by,
+                                int iw, int ih, enum BlockSize bs,
+                                enum RectTxfmSize ytx, enum RectTxfmSize uvtx,
+                                enum Dav1dPixelLayout layout, uint8_t *ay,
+                                uint8_t *ly, uint8_t *auv, uint8_t *luv);
+void dav1d_create_lf_mask_inter(Av1Filter *lflvl, uint8_t (*level_cache)[4],
+                                const ptrdiff_t b4_stride,
+                                const uint8_t (*level)[8][2], int bx, int by,
+                                int iw, int ih, int skip_inter,
+                                enum BlockSize bs, enum RectTxfmSize max_ytx,
+                                const uint16_t *tx_mask, enum RectTxfmSize uvtx,
+                                enum Dav1dPixelLayout layout, uint8_t *ay,
+                                uint8_t *ly, uint8_t *auv, uint8_t *luv);
+void dav1d_calc_eih(Av1FilterLUT *lim_lut, int filter_sharpness);
+void dav1d_calc_lf_values(uint8_t (*values)[4][8][2], const Dav1dFrameHeader *hdr,
+                          const int8_t lf_delta[4]);
+
+#endif /* DAV1D_SRC_LF_MASK_H */