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-rw-r--r--third_party/aom/av1/common/idct.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/idct.c b/third_party/aom/av1/common/idct.c
new file mode 100644
index 0000000000..2c1cb98271
--- /dev/null
+++ b/third_party/aom/av1/common/idct.c
@@ -0,0 +1,322 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include <math.h>
+
+#include "config/aom_dsp_rtcd.h"
+#include "config/av1_rtcd.h"
+
+#include "aom_ports/mem.h"
+#include "av1/common/av1_inv_txfm1d_cfg.h"
+#include "av1/common/av1_txfm.h"
+#include "av1/common/blockd.h"
+#include "av1/common/enums.h"
+#include "av1/common/idct.h"
+
+int av1_get_tx_scale(const TX_SIZE tx_size) {
+ const int pels = tx_size_2d[tx_size];
+ // Largest possible pels is 4096 (64x64).
+ return (pels > 256) + (pels > 1024);
+}
+
+// NOTE: The implementation of all inverses need to be aware of the fact
+// that input and output could be the same buffer.
+
+// idct
+void av1_highbd_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride,
+ int eob, int bd) {
+ if (eob > 1)
+ av1_highbd_iwht4x4_16_add(input, dest, stride, bd);
+ else
+ av1_highbd_iwht4x4_1_add(input, dest, stride, bd);
+}
+
+void av1_highbd_inv_txfm_add_4x4_c(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
+ int eob = txfm_param->eob;
+ int bd = txfm_param->bd;
+ int lossless = txfm_param->lossless;
+ const int32_t *src = cast_to_int32(input);
+ const TX_TYPE tx_type = txfm_param->tx_type;
+ if (lossless) {
+ assert(tx_type == DCT_DCT);
+ av1_highbd_iwht4x4_add(input, dest, stride, eob, bd);
+ return;
+ }
+
+ av1_inv_txfm2d_add_4x4_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type, bd);
+}
+
+void av1_highbd_inv_txfm_add_4x8(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_4x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_8x4(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_8x4_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_16x32(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_16x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_32x16(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_32x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_16x4(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_16x4_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_4x16(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_4x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_32x8(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_32x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_8x32(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_8x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_32x64(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_32x64_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_64x32(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_64x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_16x64(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_16x64_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_64x16(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_64x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_8x8_c(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ int bd = txfm_param->bd;
+ const TX_TYPE tx_type = txfm_param->tx_type;
+ const int32_t *src = cast_to_int32(input);
+
+ av1_inv_txfm2d_add_8x8_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type, bd);
+}
+
+void av1_highbd_inv_txfm_add_16x16_c(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ int bd = txfm_param->bd;
+ const TX_TYPE tx_type = txfm_param->tx_type;
+ const int32_t *src = cast_to_int32(input);
+
+ av1_inv_txfm2d_add_16x16_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
+ bd);
+}
+
+void av1_highbd_inv_txfm_add_8x16_c(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_8x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_16x8_c(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int32_t *src = cast_to_int32(input);
+ av1_inv_txfm2d_add_16x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+ txfm_param->tx_type, txfm_param->bd);
+}
+
+void av1_highbd_inv_txfm_add_32x32_c(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int bd = txfm_param->bd;
+ const TX_TYPE tx_type = txfm_param->tx_type;
+ const int32_t *src = cast_to_int32(input);
+
+ av1_inv_txfm2d_add_32x32_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
+ bd);
+}
+
+void av1_highbd_inv_txfm_add_64x64_c(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ const int bd = txfm_param->bd;
+ const TX_TYPE tx_type = txfm_param->tx_type;
+ const int32_t *src = cast_to_int32(input);
+ assert(tx_type == DCT_DCT);
+ av1_inv_txfm2d_add_64x64_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
+ bd);
+}
+
+static void init_txfm_param(const MACROBLOCKD *xd, int plane, TX_SIZE tx_size,
+ TX_TYPE tx_type, int eob, int reduced_tx_set,
+ TxfmParam *txfm_param) {
+ (void)plane;
+ txfm_param->tx_type = tx_type;
+ txfm_param->tx_size = tx_size;
+ txfm_param->eob = eob;
+ txfm_param->lossless = xd->lossless[xd->mi[0]->segment_id];
+ txfm_param->bd = xd->bd;
+ txfm_param->is_hbd = get_bitdepth_data_path_index(xd);
+ txfm_param->tx_set_type = av1_get_ext_tx_set_type(
+ txfm_param->tx_size, is_inter_block(xd->mi[0]), reduced_tx_set);
+}
+
+void av1_highbd_inv_txfm_add_c(const tran_low_t *input, uint8_t *dest,
+ int stride, const TxfmParam *txfm_param) {
+ assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
+ const TX_SIZE tx_size = txfm_param->tx_size;
+ switch (tx_size) {
+ case TX_32X32:
+ av1_highbd_inv_txfm_add_32x32_c(input, dest, stride, txfm_param);
+ break;
+ case TX_16X16:
+ av1_highbd_inv_txfm_add_16x16_c(input, dest, stride, txfm_param);
+ break;
+ case TX_8X8:
+ av1_highbd_inv_txfm_add_8x8_c(input, dest, stride, txfm_param);
+ break;
+ case TX_4X8:
+ av1_highbd_inv_txfm_add_4x8(input, dest, stride, txfm_param);
+ break;
+ case TX_8X4:
+ av1_highbd_inv_txfm_add_8x4(input, dest, stride, txfm_param);
+ break;
+ case TX_8X16:
+ av1_highbd_inv_txfm_add_8x16_c(input, dest, stride, txfm_param);
+ break;
+ case TX_16X8:
+ av1_highbd_inv_txfm_add_16x8_c(input, dest, stride, txfm_param);
+ break;
+ case TX_16X32:
+ av1_highbd_inv_txfm_add_16x32(input, dest, stride, txfm_param);
+ break;
+ case TX_32X16:
+ av1_highbd_inv_txfm_add_32x16(input, dest, stride, txfm_param);
+ break;
+ case TX_64X64:
+ av1_highbd_inv_txfm_add_64x64_c(input, dest, stride, txfm_param);
+ break;
+ case TX_32X64:
+ av1_highbd_inv_txfm_add_32x64(input, dest, stride, txfm_param);
+ break;
+ case TX_64X32:
+ av1_highbd_inv_txfm_add_64x32(input, dest, stride, txfm_param);
+ break;
+ case TX_16X64:
+ av1_highbd_inv_txfm_add_16x64(input, dest, stride, txfm_param);
+ break;
+ case TX_64X16:
+ av1_highbd_inv_txfm_add_64x16(input, dest, stride, txfm_param);
+ break;
+ case TX_4X4:
+ // this is like av1_short_idct4x4 but has a special case around eob<=1
+ // which is significant (not just an optimization) for the lossless
+ // case.
+ av1_highbd_inv_txfm_add_4x4_c(input, dest, stride, txfm_param);
+ break;
+ case TX_16X4:
+ av1_highbd_inv_txfm_add_16x4(input, dest, stride, txfm_param);
+ break;
+ case TX_4X16:
+ av1_highbd_inv_txfm_add_4x16(input, dest, stride, txfm_param);
+ break;
+ case TX_8X32:
+ av1_highbd_inv_txfm_add_8x32(input, dest, stride, txfm_param);
+ break;
+ case TX_32X8:
+ av1_highbd_inv_txfm_add_32x8(input, dest, stride, txfm_param);
+ break;
+ default: assert(0 && "Invalid transform size"); break;
+ }
+}
+
+void av1_inv_txfm_add_c(const tran_low_t *dqcoeff, uint8_t *dst, int stride,
+ const TxfmParam *txfm_param) {
+ const TX_SIZE tx_size = txfm_param->tx_size;
+ DECLARE_ALIGNED(32, uint16_t, tmp[MAX_TX_SQUARE]);
+ int tmp_stride = MAX_TX_SIZE;
+ int w = tx_size_wide[tx_size];
+ int h = tx_size_high[tx_size];
+ for (int r = 0; r < h; ++r) {
+ for (int c = 0; c < w; ++c) {
+ tmp[r * tmp_stride + c] = dst[r * stride + c];
+ }
+ }
+
+ av1_highbd_inv_txfm_add(dqcoeff, CONVERT_TO_BYTEPTR(tmp), tmp_stride,
+ txfm_param);
+
+ for (int r = 0; r < h; ++r) {
+ for (int c = 0; c < w; ++c) {
+ dst[r * stride + c] = (uint8_t)tmp[r * tmp_stride + c];
+ }
+ }
+}
+
+void av1_inverse_transform_block(const MACROBLOCKD *xd,
+ const tran_low_t *dqcoeff, int plane,
+ TX_TYPE tx_type, TX_SIZE tx_size, uint8_t *dst,
+ int stride, int eob, int reduced_tx_set) {
+ if (!eob) return;
+
+ assert(eob <= av1_get_max_eob(tx_size));
+
+ TxfmParam txfm_param;
+ init_txfm_param(xd, plane, tx_size, tx_type, eob, reduced_tx_set,
+ &txfm_param);
+ assert(av1_ext_tx_used[txfm_param.tx_set_type][txfm_param.tx_type]);
+
+ if (txfm_param.is_hbd) {
+ av1_highbd_inv_txfm_add(dqcoeff, dst, stride, &txfm_param);
+ } else {
+ av1_inv_txfm_add(dqcoeff, dst, stride, &txfm_param);
+ }
+}
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