Commit 7d2b7b69 authored by Angie Chiang's avatar Angie Chiang
Browse files

Add idct4

Change-Id: I1d1b6822452772cec95160491c7bc6d3bba1f5c2
parent b934148f
/*
* Copyright (c) 2015 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.
*/
#include "vp10/common/vp10_inv_txfm1d.h"
#if CONFIG_COEFFICIENT_RANGE_CHECKING
#define range_check(stage, input, buf, size, bit) \
{ \
int i, j; \
for (i = 0; i < size; ++i) { \
int buf_bit = get_max_bit(abs(buf[i])) + 1; \
if (buf_bit > bit) { \
printf("======== %s overflow ========\n", __func__); \
printf("stage: %d node: %d\n", stage, i); \
printf("bit: %d buf_bit: %d buf[i]: %d\n", bit, buf_bit, buf[i]); \
printf("input:\n"); \
for (j = 0; j < size; j++) { \
printf("%d,", input[j]); \
} \
printf("\n"); \
assert(0, "vp10_inv_txfm1d.c: range_check overflow"); \
} \
} \
}
#else
#define range_check(stage, input, buf, size, bit) \
{ \
(void) stage; \
(void) input; \
(void) buf; \
(void) size; \
(void) bit; \
}
#endif
void vp10_idct4_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range) {
const int32_t size = 4;
const int32_t *cospi;
int32_t stage = 0;
int32_t *bf0, *bf1;
int32_t step[4];
// stage 0;
range_check(stage, input, input, size, stage_range[stage]);
// stage 1;
stage++;
bf1 = output;
bf1[0] = input[0];
bf1[1] = input[2];
bf1[2] = input[1];
bf1[3] = input[3];
range_check(stage, input, bf1, size, stage_range[stage]);
// stage 2
stage++;
cospi = cospi_arr[cos_bit[stage] - cos_bit_min];
bf0 = output;
bf1 = step;
bf1[0] = half_btf(cospi[32], bf0[0], cospi[32], bf0[1], cos_bit[stage]);
bf1[1] = half_btf(cospi[32], bf0[0], -cospi[32], bf0[1], cos_bit[stage]);
bf1[2] = half_btf(cospi[48], bf0[2], -cospi[16], bf0[3], cos_bit[stage]);
bf1[3] = half_btf(cospi[16], bf0[2], cospi[48], bf0[3], cos_bit[stage]);
range_check(stage, input, bf1, size, stage_range[stage]);
// stage 3
stage++;
bf0 = step;
bf1 = output;
bf1[0] = bf0[0] + bf0[3];
bf1[1] = bf0[1] + bf0[2];
bf1[2] = bf0[1] - bf0[2];
bf1[3] = bf0[0] - bf0[3];
range_check(stage, input, bf1, size, stage_range[stage]);
}
/*
* Copyright (c) 2015 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 VP10_INV_TXFM1D_H_
#define VP10_INV_TXFM1D_H_
#include "vp10/common/vp10_txfm.h"
#ifdef __cplusplus
extern "C" {
#endif
void vp10_idct4_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range);
#ifdef __cplusplus
}
#endif
#endif // VP10_INV_TXFM1D_H_
......@@ -66,6 +66,8 @@ VP10_COMMON_SRCS-yes += common/vp10_fwd_txfm.c
VP10_COMMON_SRCS-yes += common/vp10_txfm.h
VP10_COMMON_SRCS-yes += common/vp10_fwd_txfm1d.h
VP10_COMMON_SRCS-yes += common/vp10_fwd_txfm1d.c
VP10_COMMON_SRCS-yes += common/vp10_inv_txfm1d.h
VP10_COMMON_SRCS-yes += common/vp10_inv_txfm1d.c
VP10_COMMON_SRCS-$(CONFIG_VP9_POSTPROC) += common/postproc.h
VP10_COMMON_SRCS-$(CONFIG_VP9_POSTPROC) += common/postproc.c
......
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