diff options
Diffstat (limited to 'thirdparty/libvpx/vpx_dsp/inv_txfm.h')
| -rw-r--r-- | thirdparty/libvpx/vpx_dsp/inv_txfm.h | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/thirdparty/libvpx/vpx_dsp/inv_txfm.h b/thirdparty/libvpx/vpx_dsp/inv_txfm.h deleted file mode 100644 index 9cfe1be3a7..0000000000 --- a/thirdparty/libvpx/vpx_dsp/inv_txfm.h +++ /dev/null @@ -1,133 +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_high_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 input; -} - -static INLINE tran_high_t dct_const_round_shift(tran_high_t input) { - tran_high_t rv = ROUND_POWER_OF_TWO(input, DCT_CONST_BITS); - return (tran_high_t)rv; -} - -#if CONFIG_VP9_HIGHBITDEPTH -static INLINE tran_high_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 input; -} - -static INLINE tran_high_t highbd_dct_const_round_shift(tran_high_t input) { - tran_high_t rv = ROUND_POWER_OF_TWO(input, DCT_CONST_BITS); - return (tran_high_t)rv; -} -#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) ((((int32_t)check_range(x)) << 16) >> 16) -#if CONFIG_VP9_HIGHBITDEPTH -#define HIGHBD_WRAPLOW(x, bd) \ - ((((int32_t)highbd_check_range((x), bd)) << (24 - bd)) >> (24 - bd)) -#endif // CONFIG_VP9_HIGHBITDEPTH - -#else // CONFIG_EMULATE_HARDWARE - -#define WRAPLOW(x) ((int32_t)check_range(x)) -#if CONFIG_VP9_HIGHBITDEPTH -#define HIGHBD_WRAPLOW(x, bd) \ - ((int32_t)highbd_check_range((x), bd)) -#endif // CONFIG_VP9_HIGHBITDEPTH -#endif // CONFIG_EMULATE_HARDWARE - -void idct4_c(const tran_low_t *input, tran_low_t *output); -void idct8_c(const tran_low_t *input, tran_low_t *output); -void idct16_c(const tran_low_t *input, tran_low_t *output); -void idct32_c(const tran_low_t *input, tran_low_t *output); -void iadst4_c(const tran_low_t *input, tran_low_t *output); -void iadst8_c(const tran_low_t *input, tran_low_t *output); -void iadst16_c(const tran_low_t *input, tran_low_t *output); - -#if CONFIG_VP9_HIGHBITDEPTH -void vpx_highbd_idct4_c(const tran_low_t *input, tran_low_t *output, int bd); -void vpx_highbd_idct8_c(const tran_low_t *input, tran_low_t *output, int bd); -void vpx_highbd_idct16_c(const tran_low_t *input, tran_low_t *output, int bd); - -void vpx_highbd_iadst4_c(const tran_low_t *input, tran_low_t *output, int bd); -void vpx_highbd_iadst8_c(const tran_low_t *input, tran_low_t *output, int bd); -void vpx_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 = HIGHBD_WRAPLOW(trans, bd); - return clip_pixel_highbd(dest + (int)trans, bd); -} -#endif - -static INLINE uint8_t clip_pixel_add(uint8_t dest, tran_high_t trans) { - trans = WRAPLOW(trans); - return clip_pixel(dest + (int)trans); -} -#ifdef __cplusplus -} // extern "C" -#endif - -#endif // VPX_DSP_INV_TXFM_H_ |