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diff --git a/third_party/dav1d/src/itx_tmpl.c b/third_party/dav1d/src/itx_tmpl.c
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+/*
+ * Copyright © 2018-2019, VideoLAN and dav1d authors
+ * Copyright © 2018-2019, 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.
+ */
+
+#include "config.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "common/attributes.h"
+#include "common/intops.h"
+
+#include "src/itx.h"
+#include "src/itx_1d.h"
+
+static NOINLINE void
+inv_txfm_add_c(pixel *dst, const ptrdiff_t stride, coef *const coeff,
+ const int eob, const int w, const int h, const int shift,
+ const itx_1d_fn first_1d_fn, const itx_1d_fn second_1d_fn,
+ const int has_dconly HIGHBD_DECL_SUFFIX)
+{
+ assert(w >= 4 && w <= 64);
+ assert(h >= 4 && h <= 64);
+ assert(eob >= 0);
+
+ const int is_rect2 = w * 2 == h || h * 2 == w;
+ const int rnd = (1 << shift) >> 1;
+
+ if (eob < has_dconly) {
+ int dc = coeff[0];
+ coeff[0] = 0;
+ if (is_rect2)
+ dc = (dc * 181 + 128) >> 8;
+ dc = (dc * 181 + 128) >> 8;
+ dc = (dc + rnd) >> shift;
+ dc = (dc * 181 + 128 + 2048) >> 12;
+ for (int y = 0; y < h; y++, dst += PXSTRIDE(stride))
+ for (int x = 0; x < w; x++)
+ dst[x] = iclip_pixel(dst[x] + dc);
+ return;
+ }
+
+ const int sh = imin(h, 32), sw = imin(w, 32);
+#if BITDEPTH == 8
+ const int row_clip_min = INT16_MIN;
+ const int col_clip_min = INT16_MIN;
+#else
+ const int row_clip_min = (int) ((unsigned) ~bitdepth_max << 7);
+ const int col_clip_min = (int) ((unsigned) ~bitdepth_max << 5);
+#endif
+ const int row_clip_max = ~row_clip_min;
+ const int col_clip_max = ~col_clip_min;
+
+ int32_t tmp[64 * 64], *c = tmp;
+ for (int y = 0; y < sh; y++, c += w) {
+ if (is_rect2)
+ for (int x = 0; x < sw; x++)
+ c[x] = (coeff[y + x * sh] * 181 + 128) >> 8;
+ else
+ for (int x = 0; x < sw; x++)
+ c[x] = coeff[y + x * sh];
+ first_1d_fn(c, 1, row_clip_min, row_clip_max);
+ }
+
+ memset(coeff, 0, sizeof(*coeff) * sw * sh);
+ for (int i = 0; i < w * sh; i++)
+ tmp[i] = iclip((tmp[i] + rnd) >> shift, col_clip_min, col_clip_max);
+
+ for (int x = 0; x < w; x++)
+ second_1d_fn(&tmp[x], w, col_clip_min, col_clip_max);
+
+ c = tmp;
+ for (int y = 0; y < h; y++, dst += PXSTRIDE(stride))
+ for (int x = 0; x < w; x++)
+ dst[x] = iclip_pixel(dst[x] + ((*c++ + 8) >> 4));
+}
+
+#define inv_txfm_fn(type1, type2, w, h, shift, has_dconly) \
+static void \
+inv_txfm_add_##type1##_##type2##_##w##x##h##_c(pixel *dst, \
+ const ptrdiff_t stride, \
+ coef *const coeff, \
+ const int eob \
+ HIGHBD_DECL_SUFFIX) \
+{ \
+ inv_txfm_add_c(dst, stride, coeff, eob, w, h, shift, \
+ dav1d_inv_##type1##w##_1d_c, dav1d_inv_##type2##h##_1d_c, \
+ has_dconly HIGHBD_TAIL_SUFFIX); \
+}
+
+#define inv_txfm_fn64(w, h, shift) \
+inv_txfm_fn(dct, dct, w, h, shift, 1)
+
+#define inv_txfm_fn32(w, h, shift) \
+inv_txfm_fn64(w, h, shift) \
+inv_txfm_fn(identity, identity, w, h, shift, 0)
+
+#define inv_txfm_fn16(w, h, shift) \
+inv_txfm_fn32(w, h, shift) \
+inv_txfm_fn(adst, dct, w, h, shift, 0) \
+inv_txfm_fn(dct, adst, w, h, shift, 0) \
+inv_txfm_fn(adst, adst, w, h, shift, 0) \
+inv_txfm_fn(dct, flipadst, w, h, shift, 0) \
+inv_txfm_fn(flipadst, dct, w, h, shift, 0) \
+inv_txfm_fn(adst, flipadst, w, h, shift, 0) \
+inv_txfm_fn(flipadst, adst, w, h, shift, 0) \
+inv_txfm_fn(flipadst, flipadst, w, h, shift, 0) \
+inv_txfm_fn(identity, dct, w, h, shift, 0) \
+inv_txfm_fn(dct, identity, w, h, shift, 0) \
+
+#define inv_txfm_fn84(w, h, shift) \
+inv_txfm_fn16(w, h, shift) \
+inv_txfm_fn(identity, flipadst, w, h, shift, 0) \
+inv_txfm_fn(flipadst, identity, w, h, shift, 0) \
+inv_txfm_fn(identity, adst, w, h, shift, 0) \
+inv_txfm_fn(adst, identity, w, h, shift, 0) \
+
+inv_txfm_fn84( 4, 4, 0)
+inv_txfm_fn84( 4, 8, 0)
+inv_txfm_fn84( 4, 16, 1)
+inv_txfm_fn84( 8, 4, 0)
+inv_txfm_fn84( 8, 8, 1)
+inv_txfm_fn84( 8, 16, 1)
+inv_txfm_fn32( 8, 32, 2)
+inv_txfm_fn84(16, 4, 1)
+inv_txfm_fn84(16, 8, 1)
+inv_txfm_fn16(16, 16, 2)
+inv_txfm_fn32(16, 32, 1)
+inv_txfm_fn64(16, 64, 2)
+inv_txfm_fn32(32, 8, 2)
+inv_txfm_fn32(32, 16, 1)
+inv_txfm_fn32(32, 32, 2)
+inv_txfm_fn64(32, 64, 1)
+inv_txfm_fn64(64, 16, 2)
+inv_txfm_fn64(64, 32, 1)
+inv_txfm_fn64(64, 64, 2)
+
+static void inv_txfm_add_wht_wht_4x4_c(pixel *dst, const ptrdiff_t stride,
+ coef *const coeff, const int eob
+ HIGHBD_DECL_SUFFIX)
+{
+ int32_t tmp[4 * 4], *c = tmp;
+ for (int y = 0; y < 4; y++, c += 4) {
+ for (int x = 0; x < 4; x++)
+ c[x] = coeff[y + x * 4] >> 2;
+ dav1d_inv_wht4_1d_c(c, 1);
+ }
+ memset(coeff, 0, sizeof(*coeff) * 4 * 4);
+
+ for (int x = 0; x < 4; x++)
+ dav1d_inv_wht4_1d_c(&tmp[x], 4);
+
+ c = tmp;
+ for (int y = 0; y < 4; y++, dst += PXSTRIDE(stride))
+ for (int x = 0; x < 4; x++)
+ dst[x] = iclip_pixel(dst[x] + *c++);
+}
+
+#if HAVE_ASM
+#if ARCH_AARCH64 || ARCH_ARM
+#include "src/arm/itx.h"
+#elif ARCH_X86
+#include "src/x86/itx.h"
+#endif
+#endif
+
+COLD void bitfn(dav1d_itx_dsp_init)(Dav1dInvTxfmDSPContext *const c, int bpc) {
+#define assign_itx_all_fn64(w, h, pfx) \
+ c->itxfm_add[pfx##TX_##w##X##h][DCT_DCT ] = \
+ inv_txfm_add_dct_dct_##w##x##h##_c
+
+#define assign_itx_all_fn32(w, h, pfx) \
+ assign_itx_all_fn64(w, h, pfx); \
+ c->itxfm_add[pfx##TX_##w##X##h][IDTX] = \
+ inv_txfm_add_identity_identity_##w##x##h##_c
+
+#define assign_itx_all_fn16(w, h, pfx) \
+ assign_itx_all_fn32(w, h, pfx); \
+ c->itxfm_add[pfx##TX_##w##X##h][DCT_ADST ] = \
+ inv_txfm_add_adst_dct_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][ADST_DCT ] = \
+ inv_txfm_add_dct_adst_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][ADST_ADST] = \
+ inv_txfm_add_adst_adst_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][ADST_FLIPADST] = \
+ inv_txfm_add_flipadst_adst_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][FLIPADST_ADST] = \
+ inv_txfm_add_adst_flipadst_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][DCT_FLIPADST] = \
+ inv_txfm_add_flipadst_dct_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][FLIPADST_DCT] = \
+ inv_txfm_add_dct_flipadst_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][FLIPADST_FLIPADST] = \
+ inv_txfm_add_flipadst_flipadst_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][H_DCT] = \
+ inv_txfm_add_dct_identity_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][V_DCT] = \
+ inv_txfm_add_identity_dct_##w##x##h##_c
+
+#define assign_itx_all_fn84(w, h, pfx) \
+ assign_itx_all_fn16(w, h, pfx); \
+ c->itxfm_add[pfx##TX_##w##X##h][H_FLIPADST] = \
+ inv_txfm_add_flipadst_identity_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][V_FLIPADST] = \
+ inv_txfm_add_identity_flipadst_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][H_ADST] = \
+ inv_txfm_add_adst_identity_##w##x##h##_c; \
+ c->itxfm_add[pfx##TX_##w##X##h][V_ADST] = \
+ inv_txfm_add_identity_adst_##w##x##h##_c; \
+
+ c->itxfm_add[TX_4X4][WHT_WHT] = inv_txfm_add_wht_wht_4x4_c;
+ assign_itx_all_fn84( 4, 4, );
+ assign_itx_all_fn84( 4, 8, R);
+ assign_itx_all_fn84( 4, 16, R);
+ assign_itx_all_fn84( 8, 4, R);
+ assign_itx_all_fn84( 8, 8, );
+ assign_itx_all_fn84( 8, 16, R);
+ assign_itx_all_fn32( 8, 32, R);
+ assign_itx_all_fn84(16, 4, R);
+ assign_itx_all_fn84(16, 8, R);
+ assign_itx_all_fn16(16, 16, );
+ assign_itx_all_fn32(16, 32, R);
+ assign_itx_all_fn64(16, 64, R);
+ assign_itx_all_fn32(32, 8, R);
+ assign_itx_all_fn32(32, 16, R);
+ assign_itx_all_fn32(32, 32, );
+ assign_itx_all_fn64(32, 64, R);
+ assign_itx_all_fn64(64, 16, R);
+ assign_itx_all_fn64(64, 32, R);
+ assign_itx_all_fn64(64, 64, );
+
+#if HAVE_ASM
+#if ARCH_AARCH64 || ARCH_ARM
+ itx_dsp_init_arm(c, bpc);
+#endif
+#if ARCH_X86
+ itx_dsp_init_x86(c, bpc);
+#endif
+#endif
+}