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Diffstat (limited to 'vp10/common/vp10_inv_txfm.h')
-rw-r--r--vp10/common/vp10_inv_txfm.h122
1 files changed, 0 insertions, 122 deletions
diff --git a/vp10/common/vp10_inv_txfm.h b/vp10/common/vp10_inv_txfm.h
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index 52611acbd..000000000
--- a/vp10/common/vp10_inv_txfm.h
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@@ -1,122 +0,0 @@
-/*
- * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree. An additional intellectual property rights grant can be found
- * in the file PATENTS. All contributing project authors may
- * be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef VPX_DSP_INV_TXFM_H_
-#define VPX_DSP_INV_TXFM_H_
-
-#include <assert.h>
-
-#include "./vpx_config.h"
-#include "vpx_dsp/txfm_common.h"
-#include "vpx_ports/mem.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-static INLINE tran_low_t check_range(tran_high_t input) {
-#if CONFIG_COEFFICIENT_RANGE_CHECKING
- // For valid VP9 input streams, intermediate stage coefficients should always
- // stay within the range of a signed 16 bit integer. Coefficients can go out
- // of this range for invalid/corrupt VP9 streams. However, strictly checking
- // this range for every intermediate coefficient can burdensome for a decoder,
- // therefore the following assertion is only enabled when configured with
- // --enable-coefficient-range-checking.
- assert(INT16_MIN <= input);
- assert(input <= INT16_MAX);
-#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
- return (tran_low_t)input;
-}
-
-static INLINE tran_low_t dct_const_round_shift(tran_high_t input) {
- tran_high_t rv = ROUND_POWER_OF_TWO(input, DCT_CONST_BITS);
- return check_range(rv);
-}
-
-#if CONFIG_VP9_HIGHBITDEPTH
-static INLINE tran_low_t highbd_check_range(tran_high_t input,
- int bd) {
-#if CONFIG_COEFFICIENT_RANGE_CHECKING
- // For valid highbitdepth VP9 streams, intermediate stage coefficients will
- // stay within the ranges:
- // - 8 bit: signed 16 bit integer
- // - 10 bit: signed 18 bit integer
- // - 12 bit: signed 20 bit integer
- const int32_t int_max = (1 << (7 + bd)) - 1;
- const int32_t int_min = -int_max - 1;
- assert(int_min <= input);
- assert(input <= int_max);
- (void) int_min;
-#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
- (void) bd;
- return (tran_low_t)input;
-}
-
-static INLINE tran_low_t highbd_dct_const_round_shift(tran_high_t input,
- int bd) {
- tran_high_t rv = ROUND_POWER_OF_TWO(input, DCT_CONST_BITS);
- return highbd_check_range(rv, bd);
-}
-#endif // CONFIG_VP9_HIGHBITDEPTH
-
-#if CONFIG_EMULATE_HARDWARE
-// When CONFIG_EMULATE_HARDWARE is 1 the transform performs a
-// non-normative method to handle overflows. A stream that causes
-// overflows in the inverse transform is considered invalid in VP9,
-// and a hardware implementer is free to choose any reasonable
-// method to handle overflows. However to aid in hardware
-// verification they can use a specific implementation of the
-// WRAPLOW() macro below that is identical to their intended
-// hardware implementation (and also use configure options to trigger
-// the C-implementation of the transform).
-//
-// The particular WRAPLOW implementation below performs strict
-// overflow wrapping to match common hardware implementations.
-// bd of 8 uses trans_low with 16bits, need to remove 16bits
-// bd of 10 uses trans_low with 18bits, need to remove 14bits
-// bd of 12 uses trans_low with 20bits, need to remove 12bits
-// bd of x uses trans_low with 8+x bits, need to remove 24-x bits
-#define WRAPLOW(x, bd) ((((int32_t)(x)) << (24 - bd)) >> (24 - bd))
-#else
-#define WRAPLOW(x, bd) ((int32_t)(x))
-#endif // CONFIG_EMULATE_HARDWARE
-
-void vp10_idct4_c(const tran_low_t *input, tran_low_t *output);
-void vp10_idct8_c(const tran_low_t *input, tran_low_t *output);
-void vp10_idct16_c(const tran_low_t *input, tran_low_t *output);
-void vp10_idct32_c(const tran_low_t *input, tran_low_t *output);
-void vp10_iadst4_c(const tran_low_t *input, tran_low_t *output);
-void vp10_iadst8_c(const tran_low_t *input, tran_low_t *output);
-void vp10_iadst16_c(const tran_low_t *input, tran_low_t *output);
-
-#if CONFIG_VP9_HIGHBITDEPTH
-void vp10_highbd_idct4_c(const tran_low_t *input, tran_low_t *output, int bd);
-void vp10_highbd_idct8_c(const tran_low_t *input, tran_low_t *output, int bd);
-void vp10_highbd_idct16_c(const tran_low_t *input, tran_low_t *output, int bd);
-
-void vp10_highbd_iadst4_c(const tran_low_t *input, tran_low_t *output, int bd);
-void vp10_highbd_iadst8_c(const tran_low_t *input, tran_low_t *output, int bd);
-void vp10_highbd_iadst16_c(const tran_low_t *input, tran_low_t *output, int bd);
-
-static INLINE uint16_t highbd_clip_pixel_add(uint16_t dest, tran_high_t trans,
- int bd) {
- trans = WRAPLOW(trans, bd);
- return clip_pixel_highbd(WRAPLOW(dest + trans, bd), bd);
-}
-#endif
-
-static INLINE uint8_t clip_pixel_add(uint8_t dest, tran_high_t trans) {
- trans = WRAPLOW(trans, 8);
- return clip_pixel(WRAPLOW(dest + trans, 8));
-}
-#ifdef __cplusplus
-} // extern "C"
-#endif
-#endif // VPX_DSP_INV_TXFM_H_