01bb4a318d
This patch eliminates the copying of data when using FLIPADST forward transforms, by incorporating the necessary data flipping into the load_buffer_* functions of the SSE2 optimized forward transforms. The load_buffer_* functions are normally inlined, so the overhead of copying the data is removed and the overhead of flipping is minimized. Left to right flipping is still not free, as the columns need to be shuffled in registers. To preserve identity between the C and SSE2 implementations, the appropriate C implementations now also do the data flipping as part of the transform, rather than relying on the caller for flipping the input. Overall speedup is about 1.5-2% in encode on my tests. Note that these are only the forward transforms. Inverse transforms to come in a later patch. There are also a few code hygiene changes: - Fixed some indents of switch statements. - DCT_DCT transform now always use vp10_fht* functions, which dispatch to vpx_fdct* for DCT_DCT (some of them used to call vpx_fdct* directly, some of them used to call vp10_fht*). Change-Id: I93439257dc5cd104ac6129cfed45af142fb64574
1623 lines
54 KiB
C
1623 lines
54 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include <math.h>
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#include "./vp10_rtcd.h"
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#include "./vpx_config.h"
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#include "./vpx_dsp_rtcd.h"
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#include "vp10/common/blockd.h"
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#include "vp10/common/idct.h"
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#include "vpx_dsp/fwd_txfm.h"
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#include "vpx_ports/mem.h"
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static INLINE void range_check(const tran_low_t *input, const int size,
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const int bit) {
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#if CONFIG_COEFFICIENT_RANGE_CHECKING
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int i;
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for (i = 0; i < size; ++i) {
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assert(abs(input[i]) < (1 << bit));
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}
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#else
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(void)input;
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(void)size;
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(void)bit;
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#endif
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}
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#if CONFIG_EXT_TX
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void fdst4(const tran_low_t *input, tran_low_t *output) {
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// {sin(pi/5), sin(pi*2/5)} * sqrt(2/5) * sqrt(2)
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static const int32_t sinvalue_lookup[] = {
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141124871, 228344838,
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};
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int64_t sum;
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int64_t s03 = (input[0] + input[3]);
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int64_t d03 = (input[0] - input[3]);
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int64_t s12 = (input[1] + input[2]);
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int64_t d12 = (input[1] - input[2]);
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sum = s03 * sinvalue_lookup[0] + s12 * sinvalue_lookup[1];
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output[0] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d03 * sinvalue_lookup[1] + d12 * sinvalue_lookup[0];
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output[1] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s03 * sinvalue_lookup[1] - s12 * sinvalue_lookup[0];
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output[2] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d03 * sinvalue_lookup[0] - d12 * sinvalue_lookup[1];
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output[3] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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}
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void fdst8(const tran_low_t *input, tran_low_t *output) {
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// {sin(pi/9), sin(pi*2/9), ..., sin(pi*4/9)} * sqrt(2/9) * 2
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static const int sinvalue_lookup[] = {
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86559612, 162678858, 219176632, 249238470
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};
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int64_t sum;
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int64_t s07 = (input[0] + input[7]);
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int64_t d07 = (input[0] - input[7]);
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int64_t s16 = (input[1] + input[6]);
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int64_t d16 = (input[1] - input[6]);
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int64_t s25 = (input[2] + input[5]);
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int64_t d25 = (input[2] - input[5]);
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int64_t s34 = (input[3] + input[4]);
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int64_t d34 = (input[3] - input[4]);
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sum = s07 * sinvalue_lookup[0] + s16 * sinvalue_lookup[1] +
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s25 * sinvalue_lookup[2] + s34 * sinvalue_lookup[3];
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output[0] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d07 * sinvalue_lookup[1] + d16 * sinvalue_lookup[3] +
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d25 * sinvalue_lookup[2] + d34 * sinvalue_lookup[0];
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output[1] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = (s07 + s16 - s34)* sinvalue_lookup[2];
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output[2] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d07 * sinvalue_lookup[3] + d16 * sinvalue_lookup[0] -
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d25 * sinvalue_lookup[2] - d34 * sinvalue_lookup[1];
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output[3] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s07 * sinvalue_lookup[3] - s16 * sinvalue_lookup[0] -
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s25 * sinvalue_lookup[2] + s34 * sinvalue_lookup[1];
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output[4] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = (d07 - d16 + d34)* sinvalue_lookup[2];
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output[5] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s07 * sinvalue_lookup[1] - s16 * sinvalue_lookup[3] +
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s25 * sinvalue_lookup[2] - s34 * sinvalue_lookup[0];
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output[6] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d07 * sinvalue_lookup[0] - d16 * sinvalue_lookup[1] +
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d25 * sinvalue_lookup[2] - d34 * sinvalue_lookup[3];
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output[7] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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}
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void fdst16(const tran_low_t *input, tran_low_t *output) {
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// {sin(pi/17), sin(pi*2/17, ..., sin(pi*8/17)} * sqrt(2/17) * 2 * sqrt(2)
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static const int sinvalue_lookup[] = {
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47852167, 94074787, 137093803, 175444254,
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207820161, 233119001, 250479254, 259309736
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};
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int64_t sum;
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int64_t s015 = (input[0] + input[15]);
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int64_t d015 = (input[0] - input[15]);
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int64_t s114 = (input[1] + input[14]);
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int64_t d114 = (input[1] - input[14]);
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int64_t s213 = (input[2] + input[13]);
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int64_t d213 = (input[2] - input[13]);
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int64_t s312 = (input[3] + input[12]);
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int64_t d312 = (input[3] - input[12]);
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int64_t s411 = (input[4] + input[11]);
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int64_t d411 = (input[4] - input[11]);
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int64_t s510 = (input[5] + input[10]);
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int64_t d510 = (input[5] - input[10]);
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int64_t s69 = (input[6] + input[9]);
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int64_t d69 = (input[6] - input[9]);
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int64_t s78 = (input[7] + input[8]);
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int64_t d78 = (input[7] - input[8]);
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sum = s015 * sinvalue_lookup[0] + s114 * sinvalue_lookup[1] +
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s213 * sinvalue_lookup[2] + s312 * sinvalue_lookup[3] +
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s411 * sinvalue_lookup[4] + s510 * sinvalue_lookup[5] +
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s69 * sinvalue_lookup[6] + s78 * sinvalue_lookup[7];
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output[0] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d015 * sinvalue_lookup[1] + d114 * sinvalue_lookup[3] +
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d213 * sinvalue_lookup[5] + d312 * sinvalue_lookup[7] +
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d411 * sinvalue_lookup[6] + d510 * sinvalue_lookup[4] +
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d69 * sinvalue_lookup[2] + d78 * sinvalue_lookup[0];
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output[1] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s015 * sinvalue_lookup[2] + s114 * sinvalue_lookup[5] +
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s213 * sinvalue_lookup[7] + s312 * sinvalue_lookup[4] +
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s411 * sinvalue_lookup[1] - s510 * sinvalue_lookup[0] -
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s69 * sinvalue_lookup[3] - s78 * sinvalue_lookup[6];
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output[2] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d015 * sinvalue_lookup[3] + d114 * sinvalue_lookup[7] +
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d213 * sinvalue_lookup[4] + d312 * sinvalue_lookup[0] -
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d411 * sinvalue_lookup[2] - d510 * sinvalue_lookup[6] -
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d69 * sinvalue_lookup[5] - d78 * sinvalue_lookup[1];
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output[3] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s015 * sinvalue_lookup[4] + s114 * sinvalue_lookup[6] +
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s213 * sinvalue_lookup[1] - s312 * sinvalue_lookup[2] -
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s411 * sinvalue_lookup[7] - s510 * sinvalue_lookup[3] +
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s69 * sinvalue_lookup[0] + s78 * sinvalue_lookup[5];
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output[4] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d015 * sinvalue_lookup[5] + d114 * sinvalue_lookup[4] -
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d213 * sinvalue_lookup[0] - d312 * sinvalue_lookup[6] -
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d411 * sinvalue_lookup[3] + d510 * sinvalue_lookup[1] +
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d69 * sinvalue_lookup[7] + d78 * sinvalue_lookup[2];
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output[5] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s015 * sinvalue_lookup[6] + s114 * sinvalue_lookup[2] -
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s213 * sinvalue_lookup[3] - s312 * sinvalue_lookup[5] +
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s411 * sinvalue_lookup[0] + s510 * sinvalue_lookup[7] +
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s69 * sinvalue_lookup[1] - s78 * sinvalue_lookup[4];
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output[6] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d015 * sinvalue_lookup[7] + d114 * sinvalue_lookup[0] -
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d213 * sinvalue_lookup[6] - d312 * sinvalue_lookup[1] +
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d411 * sinvalue_lookup[5] + d510 * sinvalue_lookup[2] -
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d69 * sinvalue_lookup[4] - d78 * sinvalue_lookup[3];
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output[7] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s015 * sinvalue_lookup[7] - s114 * sinvalue_lookup[0] -
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s213 * sinvalue_lookup[6] + s312 * sinvalue_lookup[1] +
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s411 * sinvalue_lookup[5] - s510 * sinvalue_lookup[2] -
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s69 * sinvalue_lookup[4] + s78 * sinvalue_lookup[3];
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output[8] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d015 * sinvalue_lookup[6] - d114 * sinvalue_lookup[2] -
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d213 * sinvalue_lookup[3] + d312 * sinvalue_lookup[5] +
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d411 * sinvalue_lookup[0] - d510 * sinvalue_lookup[7] +
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d69 * sinvalue_lookup[1] + d78 * sinvalue_lookup[4];
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output[9] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s015 * sinvalue_lookup[5] - s114 * sinvalue_lookup[4] -
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s213 * sinvalue_lookup[0] + s312 * sinvalue_lookup[6] -
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s411 * sinvalue_lookup[3] - s510 * sinvalue_lookup[1] +
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s69 * sinvalue_lookup[7] - s78 * sinvalue_lookup[2];
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output[10] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d015 * sinvalue_lookup[4] - d114 * sinvalue_lookup[6] +
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d213 * sinvalue_lookup[1] + d312 * sinvalue_lookup[2] -
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d411 * sinvalue_lookup[7] + d510 * sinvalue_lookup[3] +
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d69 * sinvalue_lookup[0] - d78 * sinvalue_lookup[5];
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output[11] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s015 * sinvalue_lookup[3] - s114 * sinvalue_lookup[7] +
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s213 * sinvalue_lookup[4] - s312 * sinvalue_lookup[0] -
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s411 * sinvalue_lookup[2] + s510 * sinvalue_lookup[6] -
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s69 * sinvalue_lookup[5] + s78 * sinvalue_lookup[1];
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output[12] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d015 * sinvalue_lookup[2] - d114 * sinvalue_lookup[5] +
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d213 * sinvalue_lookup[7] - d312 * sinvalue_lookup[4] +
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d411 * sinvalue_lookup[1] + d510 * sinvalue_lookup[0] -
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d69 * sinvalue_lookup[3] + d78 * sinvalue_lookup[6];
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output[13] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = s015 * sinvalue_lookup[1] - s114 * sinvalue_lookup[3] +
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s213 * sinvalue_lookup[5] - s312 * sinvalue_lookup[7] +
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s411 * sinvalue_lookup[6] - s510 * sinvalue_lookup[4] +
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s69 * sinvalue_lookup[2] - s78 * sinvalue_lookup[0];
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output[14] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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sum = d015 * sinvalue_lookup[0] - d114 * sinvalue_lookup[1] +
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d213 * sinvalue_lookup[2] - d312 * sinvalue_lookup[3] +
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d411 * sinvalue_lookup[4] - d510 * sinvalue_lookup[5] +
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d69 * sinvalue_lookup[6] - d78 * sinvalue_lookup[7];
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output[15] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
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}
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#endif // CONFIG_EXT_TX
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static void fdct4(const tran_low_t *input, tran_low_t *output) {
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tran_high_t temp;
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tran_low_t step[4];
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// stage 0
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range_check(input, 4, 14);
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// stage 1
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output[0] = input[0] + input[3];
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output[1] = input[1] + input[2];
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output[2] = input[1] - input[2];
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output[3] = input[0] - input[3];
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range_check(output, 4, 15);
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// stage 2
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temp = output[0] * cospi_16_64 + output[1] * cospi_16_64;
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step[0] = (tran_low_t)fdct_round_shift(temp);
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temp = output[1] * -cospi_16_64 + output[0] * cospi_16_64;
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step[1] = (tran_low_t)fdct_round_shift(temp);
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temp = output[2] * cospi_24_64 + output[3] * cospi_8_64;
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step[2] = (tran_low_t)fdct_round_shift(temp);
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temp = output[3] * cospi_24_64 + output[2] * -cospi_8_64;
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step[3] = (tran_low_t)fdct_round_shift(temp);
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range_check(step, 4, 16);
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// stage 3
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output[0] = step[0];
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output[1] = step[2];
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output[2] = step[1];
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output[3] = step[3];
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range_check(output, 4, 16);
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}
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static void fdct8(const tran_low_t *input, tran_low_t *output) {
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tran_high_t temp;
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tran_low_t step[8];
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// stage 0
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range_check(input, 8, 13);
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// stage 1
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output[0] = input[0] + input[7];
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output[1] = input[1] + input[6];
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output[2] = input[2] + input[5];
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output[3] = input[3] + input[4];
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output[4] = input[3] - input[4];
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output[5] = input[2] - input[5];
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output[6] = input[1] - input[6];
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output[7] = input[0] - input[7];
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range_check(output, 8, 14);
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// stage 2
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step[0] = output[0] + output[3];
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step[1] = output[1] + output[2];
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step[2] = output[1] - output[2];
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step[3] = output[0] - output[3];
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step[4] = output[4];
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temp = output[5] * -cospi_16_64 + output[6] * cospi_16_64;
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step[5] = (tran_low_t)fdct_round_shift(temp);
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temp = output[6] * cospi_16_64 + output[5] * cospi_16_64;
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step[6] = (tran_low_t)fdct_round_shift(temp);
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step[7] = output[7];
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range_check(step, 8, 15);
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// stage 3
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temp = step[0] * cospi_16_64 + step[1] * cospi_16_64;
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output[0] = (tran_low_t)fdct_round_shift(temp);
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temp = step[1] * -cospi_16_64 + step[0] * cospi_16_64;
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output[1] = (tran_low_t)fdct_round_shift(temp);
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temp = step[2] * cospi_24_64 + step[3] * cospi_8_64;
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output[2] = (tran_low_t)fdct_round_shift(temp);
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temp = step[3] * cospi_24_64 + step[2] * -cospi_8_64;
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output[3] = (tran_low_t)fdct_round_shift(temp);
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output[4] = step[4] + step[5];
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output[5] = step[4] - step[5];
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output[6] = step[7] - step[6];
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output[7] = step[7] + step[6];
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range_check(output, 8, 16);
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// stage 4
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step[0] = output[0];
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step[1] = output[1];
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step[2] = output[2];
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step[3] = output[3];
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temp = output[4] * cospi_28_64 + output[7] * cospi_4_64;
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step[4] = (tran_low_t)fdct_round_shift(temp);
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temp = output[5] * cospi_12_64 + output[6] * cospi_20_64;
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step[5] = (tran_low_t)fdct_round_shift(temp);
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temp = output[6] * cospi_12_64 + output[5] * -cospi_20_64;
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step[6] = (tran_low_t)fdct_round_shift(temp);
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temp = output[7] * cospi_28_64 + output[4] * -cospi_4_64;
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step[7] = (tran_low_t)fdct_round_shift(temp);
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range_check(step, 8, 16);
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// stage 5
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output[0] = step[0];
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output[1] = step[4];
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output[2] = step[2];
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output[3] = step[6];
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output[4] = step[1];
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output[5] = step[5];
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output[6] = step[3];
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output[7] = step[7];
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range_check(output, 8, 16);
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}
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static void fdct16(const tran_low_t *input, tran_low_t *output) {
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tran_high_t temp;
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tran_low_t step[16];
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// stage 0
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range_check(input, 16, 13);
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// stage 1
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output[0] = input[0] + input[15];
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output[1] = input[1] + input[14];
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output[2] = input[2] + input[13];
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output[3] = input[3] + input[12];
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output[4] = input[4] + input[11];
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output[5] = input[5] + input[10];
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output[6] = input[6] + input[9];
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output[7] = input[7] + input[8];
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output[8] = input[7] - input[8];
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output[9] = input[6] - input[9];
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output[10] = input[5] - input[10];
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output[11] = input[4] - input[11];
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output[12] = input[3] - input[12];
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output[13] = input[2] - input[13];
|
|
output[14] = input[1] - input[14];
|
|
output[15] = input[0] - input[15];
|
|
|
|
range_check(output, 16, 14);
|
|
|
|
// stage 2
|
|
step[0] = output[0] + output[7];
|
|
step[1] = output[1] + output[6];
|
|
step[2] = output[2] + output[5];
|
|
step[3] = output[3] + output[4];
|
|
step[4] = output[3] - output[4];
|
|
step[5] = output[2] - output[5];
|
|
step[6] = output[1] - output[6];
|
|
step[7] = output[0] - output[7];
|
|
step[8] = output[8];
|
|
step[9] = output[9];
|
|
temp = output[10] * -cospi_16_64 + output[13] * cospi_16_64;
|
|
step[10] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[11] * -cospi_16_64 + output[12] * cospi_16_64;
|
|
step[11] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[12] * cospi_16_64 + output[11] * cospi_16_64;
|
|
step[12] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[13] * cospi_16_64 + output[10] * cospi_16_64;
|
|
step[13] = (tran_low_t)fdct_round_shift(temp);
|
|
step[14] = output[14];
|
|
step[15] = output[15];
|
|
|
|
range_check(step, 16, 15);
|
|
|
|
// stage 3
|
|
output[0] = step[0] + step[3];
|
|
output[1] = step[1] + step[2];
|
|
output[2] = step[1] - step[2];
|
|
output[3] = step[0] - step[3];
|
|
output[4] = step[4];
|
|
temp = step[5] * -cospi_16_64 + step[6] * cospi_16_64;
|
|
output[5] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[6] * cospi_16_64 + step[5] * cospi_16_64;
|
|
output[6] = (tran_low_t)fdct_round_shift(temp);
|
|
output[7] = step[7];
|
|
output[8] = step[8] + step[11];
|
|
output[9] = step[9] + step[10];
|
|
output[10] = step[9] - step[10];
|
|
output[11] = step[8] - step[11];
|
|
output[12] = step[15] - step[12];
|
|
output[13] = step[14] - step[13];
|
|
output[14] = step[14] + step[13];
|
|
output[15] = step[15] + step[12];
|
|
|
|
range_check(output, 16, 16);
|
|
|
|
// stage 4
|
|
temp = output[0] * cospi_16_64 + output[1] * cospi_16_64;
|
|
step[0] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[1] * -cospi_16_64 + output[0] * cospi_16_64;
|
|
step[1] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[2] * cospi_24_64 + output[3] * cospi_8_64;
|
|
step[2] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[3] * cospi_24_64 + output[2] * -cospi_8_64;
|
|
step[3] = (tran_low_t)fdct_round_shift(temp);
|
|
step[4] = output[4] + output[5];
|
|
step[5] = output[4] - output[5];
|
|
step[6] = output[7] - output[6];
|
|
step[7] = output[7] + output[6];
|
|
step[8] = output[8];
|
|
temp = output[9] * -cospi_8_64 + output[14] * cospi_24_64;
|
|
step[9] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[10] * -cospi_24_64 + output[13] * -cospi_8_64;
|
|
step[10] = (tran_low_t)fdct_round_shift(temp);
|
|
step[11] = output[11];
|
|
step[12] = output[12];
|
|
temp = output[13] * cospi_24_64 + output[10] * -cospi_8_64;
|
|
step[13] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[14] * cospi_8_64 + output[9] * cospi_24_64;
|
|
step[14] = (tran_low_t)fdct_round_shift(temp);
|
|
step[15] = output[15];
|
|
|
|
range_check(step, 16, 16);
|
|
|
|
// stage 5
|
|
output[0] = step[0];
|
|
output[1] = step[1];
|
|
output[2] = step[2];
|
|
output[3] = step[3];
|
|
temp = step[4] * cospi_28_64 + step[7] * cospi_4_64;
|
|
output[4] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[5] * cospi_12_64 + step[6] * cospi_20_64;
|
|
output[5] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[6] * cospi_12_64 + step[5] * -cospi_20_64;
|
|
output[6] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[7] * cospi_28_64 + step[4] * -cospi_4_64;
|
|
output[7] = (tran_low_t)fdct_round_shift(temp);
|
|
output[8] = step[8] + step[9];
|
|
output[9] = step[8] - step[9];
|
|
output[10] = step[11] - step[10];
|
|
output[11] = step[11] + step[10];
|
|
output[12] = step[12] + step[13];
|
|
output[13] = step[12] - step[13];
|
|
output[14] = step[15] - step[14];
|
|
output[15] = step[15] + step[14];
|
|
|
|
range_check(output, 16, 16);
|
|
|
|
// stage 6
|
|
step[0] = output[0];
|
|
step[1] = output[1];
|
|
step[2] = output[2];
|
|
step[3] = output[3];
|
|
step[4] = output[4];
|
|
step[5] = output[5];
|
|
step[6] = output[6];
|
|
step[7] = output[7];
|
|
temp = output[8] * cospi_30_64 + output[15] * cospi_2_64;
|
|
step[8] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[9] * cospi_14_64 + output[14] * cospi_18_64;
|
|
step[9] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[10] * cospi_22_64 + output[13] * cospi_10_64;
|
|
step[10] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[11] * cospi_6_64 + output[12] * cospi_26_64;
|
|
step[11] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[12] * cospi_6_64 + output[11] * -cospi_26_64;
|
|
step[12] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[13] * cospi_22_64 + output[10] * -cospi_10_64;
|
|
step[13] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[14] * cospi_14_64 + output[9] * -cospi_18_64;
|
|
step[14] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[15] * cospi_30_64 + output[8] * -cospi_2_64;
|
|
step[15] = (tran_low_t)fdct_round_shift(temp);
|
|
|
|
range_check(step, 16, 16);
|
|
|
|
// stage 7
|
|
output[0] = step[0];
|
|
output[1] = step[8];
|
|
output[2] = step[4];
|
|
output[3] = step[12];
|
|
output[4] = step[2];
|
|
output[5] = step[10];
|
|
output[6] = step[6];
|
|
output[7] = step[14];
|
|
output[8] = step[1];
|
|
output[9] = step[9];
|
|
output[10] = step[5];
|
|
output[11] = step[13];
|
|
output[12] = step[3];
|
|
output[13] = step[11];
|
|
output[14] = step[7];
|
|
output[15] = step[15];
|
|
|
|
range_check(output, 16, 16);
|
|
}
|
|
|
|
/* #TODO(angiebird): Unify this with vp10_fwd_txfm.c: vp10_fdct32
|
|
static void fdct32(const tran_low_t *input, tran_low_t *output) {
|
|
tran_high_t temp;
|
|
tran_low_t step[32];
|
|
|
|
// stage 0
|
|
range_check(input, 32, 14);
|
|
|
|
// stage 1
|
|
output[0] = input[0] + input[31];
|
|
output[1] = input[1] + input[30];
|
|
output[2] = input[2] + input[29];
|
|
output[3] = input[3] + input[28];
|
|
output[4] = input[4] + input[27];
|
|
output[5] = input[5] + input[26];
|
|
output[6] = input[6] + input[25];
|
|
output[7] = input[7] + input[24];
|
|
output[8] = input[8] + input[23];
|
|
output[9] = input[9] + input[22];
|
|
output[10] = input[10] + input[21];
|
|
output[11] = input[11] + input[20];
|
|
output[12] = input[12] + input[19];
|
|
output[13] = input[13] + input[18];
|
|
output[14] = input[14] + input[17];
|
|
output[15] = input[15] + input[16];
|
|
output[16] = input[15] - input[16];
|
|
output[17] = input[14] - input[17];
|
|
output[18] = input[13] - input[18];
|
|
output[19] = input[12] - input[19];
|
|
output[20] = input[11] - input[20];
|
|
output[21] = input[10] - input[21];
|
|
output[22] = input[9] - input[22];
|
|
output[23] = input[8] - input[23];
|
|
output[24] = input[7] - input[24];
|
|
output[25] = input[6] - input[25];
|
|
output[26] = input[5] - input[26];
|
|
output[27] = input[4] - input[27];
|
|
output[28] = input[3] - input[28];
|
|
output[29] = input[2] - input[29];
|
|
output[30] = input[1] - input[30];
|
|
output[31] = input[0] - input[31];
|
|
|
|
range_check(output, 32, 15);
|
|
|
|
// stage 2
|
|
step[0] = output[0] + output[15];
|
|
step[1] = output[1] + output[14];
|
|
step[2] = output[2] + output[13];
|
|
step[3] = output[3] + output[12];
|
|
step[4] = output[4] + output[11];
|
|
step[5] = output[5] + output[10];
|
|
step[6] = output[6] + output[9];
|
|
step[7] = output[7] + output[8];
|
|
step[8] = output[7] - output[8];
|
|
step[9] = output[6] - output[9];
|
|
step[10] = output[5] - output[10];
|
|
step[11] = output[4] - output[11];
|
|
step[12] = output[3] - output[12];
|
|
step[13] = output[2] - output[13];
|
|
step[14] = output[1] - output[14];
|
|
step[15] = output[0] - output[15];
|
|
step[16] = output[16];
|
|
step[17] = output[17];
|
|
step[18] = output[18];
|
|
step[19] = output[19];
|
|
temp = output[20] * -cospi_16_64 + output[27] * cospi_16_64;
|
|
step[20] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[21] * -cospi_16_64 + output[26] * cospi_16_64;
|
|
step[21] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[22] * -cospi_16_64 + output[25] * cospi_16_64;
|
|
step[22] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[23] * -cospi_16_64 + output[24] * cospi_16_64;
|
|
step[23] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[24] * cospi_16_64 + output[23] * cospi_16_64;
|
|
step[24] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[25] * cospi_16_64 + output[22] * cospi_16_64;
|
|
step[25] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[26] * cospi_16_64 + output[21] * cospi_16_64;
|
|
step[26] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[27] * cospi_16_64 + output[20] * cospi_16_64;
|
|
step[27] = (tran_low_t)fdct_round_shift(temp);
|
|
step[28] = output[28];
|
|
step[29] = output[29];
|
|
step[30] = output[30];
|
|
step[31] = output[31];
|
|
|
|
range_check(step, 32, 16);
|
|
|
|
// stage 3
|
|
output[0] = step[0] + step[7];
|
|
output[1] = step[1] + step[6];
|
|
output[2] = step[2] + step[5];
|
|
output[3] = step[3] + step[4];
|
|
output[4] = step[3] - step[4];
|
|
output[5] = step[2] - step[5];
|
|
output[6] = step[1] - step[6];
|
|
output[7] = step[0] - step[7];
|
|
output[8] = step[8];
|
|
output[9] = step[9];
|
|
temp = step[10] * -cospi_16_64 + step[13] * cospi_16_64;
|
|
output[10] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[11] * -cospi_16_64 + step[12] * cospi_16_64;
|
|
output[11] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[12] * cospi_16_64 + step[11] * cospi_16_64;
|
|
output[12] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[13] * cospi_16_64 + step[10] * cospi_16_64;
|
|
output[13] = (tran_low_t)fdct_round_shift(temp);
|
|
output[14] = step[14];
|
|
output[15] = step[15];
|
|
output[16] = step[16] + step[23];
|
|
output[17] = step[17] + step[22];
|
|
output[18] = step[18] + step[21];
|
|
output[19] = step[19] + step[20];
|
|
output[20] = step[19] - step[20];
|
|
output[21] = step[18] - step[21];
|
|
output[22] = step[17] - step[22];
|
|
output[23] = step[16] - step[23];
|
|
output[24] = step[31] - step[24];
|
|
output[25] = step[30] - step[25];
|
|
output[26] = step[29] - step[26];
|
|
output[27] = step[28] - step[27];
|
|
output[28] = step[28] + step[27];
|
|
output[29] = step[29] + step[26];
|
|
output[30] = step[30] + step[25];
|
|
output[31] = step[31] + step[24];
|
|
|
|
range_check(output, 32, 17);
|
|
|
|
// stage 4
|
|
step[0] = output[0] + output[3];
|
|
step[1] = output[1] + output[2];
|
|
step[2] = output[1] - output[2];
|
|
step[3] = output[0] - output[3];
|
|
step[4] = output[4];
|
|
temp = output[5] * -cospi_16_64 + output[6] * cospi_16_64;
|
|
step[5] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[6] * cospi_16_64 + output[5] * cospi_16_64;
|
|
step[6] = (tran_low_t)fdct_round_shift(temp);
|
|
step[7] = output[7];
|
|
step[8] = output[8] + output[11];
|
|
step[9] = output[9] + output[10];
|
|
step[10] = output[9] - output[10];
|
|
step[11] = output[8] - output[11];
|
|
step[12] = output[15] - output[12];
|
|
step[13] = output[14] - output[13];
|
|
step[14] = output[14] + output[13];
|
|
step[15] = output[15] + output[12];
|
|
step[16] = output[16];
|
|
step[17] = output[17];
|
|
temp = output[18] * -cospi_8_64 + output[29] * cospi_24_64;
|
|
step[18] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[19] * -cospi_8_64 + output[28] * cospi_24_64;
|
|
step[19] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[20] * -cospi_24_64 + output[27] * -cospi_8_64;
|
|
step[20] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[21] * -cospi_24_64 + output[26] * -cospi_8_64;
|
|
step[21] = (tran_low_t)fdct_round_shift(temp);
|
|
step[22] = output[22];
|
|
step[23] = output[23];
|
|
step[24] = output[24];
|
|
step[25] = output[25];
|
|
temp = output[26] * cospi_24_64 + output[21] * -cospi_8_64;
|
|
step[26] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[27] * cospi_24_64 + output[20] * -cospi_8_64;
|
|
step[27] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[28] * cospi_8_64 + output[19] * cospi_24_64;
|
|
step[28] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[29] * cospi_8_64 + output[18] * cospi_24_64;
|
|
step[29] = (tran_low_t)fdct_round_shift(temp);
|
|
step[30] = output[30];
|
|
step[31] = output[31];
|
|
|
|
range_check(step, 32, 18);
|
|
|
|
// stage 5
|
|
temp = step[0] * cospi_16_64 + step[1] * cospi_16_64;
|
|
output[0] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[1] * -cospi_16_64 + step[0] * cospi_16_64;
|
|
output[1] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[2] * cospi_24_64 + step[3] * cospi_8_64;
|
|
output[2] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[3] * cospi_24_64 + step[2] * -cospi_8_64;
|
|
output[3] = (tran_low_t)fdct_round_shift(temp);
|
|
output[4] = step[4] + step[5];
|
|
output[5] = step[4] - step[5];
|
|
output[6] = step[7] - step[6];
|
|
output[7] = step[7] + step[6];
|
|
output[8] = step[8];
|
|
temp = step[9] * -cospi_8_64 + step[14] * cospi_24_64;
|
|
output[9] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[10] * -cospi_24_64 + step[13] * -cospi_8_64;
|
|
output[10] = (tran_low_t)fdct_round_shift(temp);
|
|
output[11] = step[11];
|
|
output[12] = step[12];
|
|
temp = step[13] * cospi_24_64 + step[10] * -cospi_8_64;
|
|
output[13] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[14] * cospi_8_64 + step[9] * cospi_24_64;
|
|
output[14] = (tran_low_t)fdct_round_shift(temp);
|
|
output[15] = step[15];
|
|
output[16] = step[16] + step[19];
|
|
output[17] = step[17] + step[18];
|
|
output[18] = step[17] - step[18];
|
|
output[19] = step[16] - step[19];
|
|
output[20] = step[23] - step[20];
|
|
output[21] = step[22] - step[21];
|
|
output[22] = step[22] + step[21];
|
|
output[23] = step[23] + step[20];
|
|
output[24] = step[24] + step[27];
|
|
output[25] = step[25] + step[26];
|
|
output[26] = step[25] - step[26];
|
|
output[27] = step[24] - step[27];
|
|
output[28] = step[31] - step[28];
|
|
output[29] = step[30] - step[29];
|
|
output[30] = step[30] + step[29];
|
|
output[31] = step[31] + step[28];
|
|
|
|
range_check(output, 32, 18);
|
|
|
|
// stage 6
|
|
step[0] = output[0];
|
|
step[1] = output[1];
|
|
step[2] = output[2];
|
|
step[3] = output[3];
|
|
temp = output[4] * cospi_28_64 + output[7] * cospi_4_64;
|
|
step[4] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[5] * cospi_12_64 + output[6] * cospi_20_64;
|
|
step[5] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[6] * cospi_12_64 + output[5] * -cospi_20_64;
|
|
step[6] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[7] * cospi_28_64 + output[4] * -cospi_4_64;
|
|
step[7] = (tran_low_t)fdct_round_shift(temp);
|
|
step[8] = output[8] + output[9];
|
|
step[9] = output[8] - output[9];
|
|
step[10] = output[11] - output[10];
|
|
step[11] = output[11] + output[10];
|
|
step[12] = output[12] + output[13];
|
|
step[13] = output[12] - output[13];
|
|
step[14] = output[15] - output[14];
|
|
step[15] = output[15] + output[14];
|
|
step[16] = output[16];
|
|
temp = output[17] * -cospi_4_64 + output[30] * cospi_28_64;
|
|
step[17] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[18] * -cospi_28_64 + output[29] * -cospi_4_64;
|
|
step[18] = (tran_low_t)fdct_round_shift(temp);
|
|
step[19] = output[19];
|
|
step[20] = output[20];
|
|
temp = output[21] * -cospi_20_64 + output[26] * cospi_12_64;
|
|
step[21] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[22] * -cospi_12_64 + output[25] * -cospi_20_64;
|
|
step[22] = (tran_low_t)fdct_round_shift(temp);
|
|
step[23] = output[23];
|
|
step[24] = output[24];
|
|
temp = output[25] * cospi_12_64 + output[22] * -cospi_20_64;
|
|
step[25] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[26] * cospi_20_64 + output[21] * cospi_12_64;
|
|
step[26] = (tran_low_t)fdct_round_shift(temp);
|
|
step[27] = output[27];
|
|
step[28] = output[28];
|
|
temp = output[29] * cospi_28_64 + output[18] * -cospi_4_64;
|
|
step[29] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[30] * cospi_4_64 + output[17] * cospi_28_64;
|
|
step[30] = (tran_low_t)fdct_round_shift(temp);
|
|
step[31] = output[31];
|
|
|
|
range_check(step, 32, 18);
|
|
|
|
// stage 7
|
|
output[0] = step[0];
|
|
output[1] = step[1];
|
|
output[2] = step[2];
|
|
output[3] = step[3];
|
|
output[4] = step[4];
|
|
output[5] = step[5];
|
|
output[6] = step[6];
|
|
output[7] = step[7];
|
|
temp = step[8] * cospi_30_64 + step[15] * cospi_2_64;
|
|
output[8] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[9] * cospi_14_64 + step[14] * cospi_18_64;
|
|
output[9] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[10] * cospi_22_64 + step[13] * cospi_10_64;
|
|
output[10] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[11] * cospi_6_64 + step[12] * cospi_26_64;
|
|
output[11] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[12] * cospi_6_64 + step[11] * -cospi_26_64;
|
|
output[12] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[13] * cospi_22_64 + step[10] * -cospi_10_64;
|
|
output[13] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[14] * cospi_14_64 + step[9] * -cospi_18_64;
|
|
output[14] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = step[15] * cospi_30_64 + step[8] * -cospi_2_64;
|
|
output[15] = (tran_low_t)fdct_round_shift(temp);
|
|
output[16] = step[16] + step[17];
|
|
output[17] = step[16] - step[17];
|
|
output[18] = step[19] - step[18];
|
|
output[19] = step[19] + step[18];
|
|
output[20] = step[20] + step[21];
|
|
output[21] = step[20] - step[21];
|
|
output[22] = step[23] - step[22];
|
|
output[23] = step[23] + step[22];
|
|
output[24] = step[24] + step[25];
|
|
output[25] = step[24] - step[25];
|
|
output[26] = step[27] - step[26];
|
|
output[27] = step[27] + step[26];
|
|
output[28] = step[28] + step[29];
|
|
output[29] = step[28] - step[29];
|
|
output[30] = step[31] - step[30];
|
|
output[31] = step[31] + step[30];
|
|
|
|
range_check(output, 32, 18);
|
|
|
|
// stage 8
|
|
step[0] = output[0];
|
|
step[1] = output[1];
|
|
step[2] = output[2];
|
|
step[3] = output[3];
|
|
step[4] = output[4];
|
|
step[5] = output[5];
|
|
step[6] = output[6];
|
|
step[7] = output[7];
|
|
step[8] = output[8];
|
|
step[9] = output[9];
|
|
step[10] = output[10];
|
|
step[11] = output[11];
|
|
step[12] = output[12];
|
|
step[13] = output[13];
|
|
step[14] = output[14];
|
|
step[15] = output[15];
|
|
temp = output[16] * cospi_31_64 + output[31] * cospi_1_64;
|
|
step[16] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[17] * cospi_15_64 + output[30] * cospi_17_64;
|
|
step[17] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[18] * cospi_23_64 + output[29] * cospi_9_64;
|
|
step[18] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[19] * cospi_7_64 + output[28] * cospi_25_64;
|
|
step[19] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[20] * cospi_27_64 + output[27] * cospi_5_64;
|
|
step[20] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[21] * cospi_11_64 + output[26] * cospi_21_64;
|
|
step[21] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[22] * cospi_19_64 + output[25] * cospi_13_64;
|
|
step[22] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[23] * cospi_3_64 + output[24] * cospi_29_64;
|
|
step[23] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[24] * cospi_3_64 + output[23] * -cospi_29_64;
|
|
step[24] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[25] * cospi_19_64 + output[22] * -cospi_13_64;
|
|
step[25] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[26] * cospi_11_64 + output[21] * -cospi_21_64;
|
|
step[26] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[27] * cospi_27_64 + output[20] * -cospi_5_64;
|
|
step[27] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[28] * cospi_7_64 + output[19] * -cospi_25_64;
|
|
step[28] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[29] * cospi_23_64 + output[18] * -cospi_9_64;
|
|
step[29] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[30] * cospi_15_64 + output[17] * -cospi_17_64;
|
|
step[30] = (tran_low_t)fdct_round_shift(temp);
|
|
temp = output[31] * cospi_31_64 + output[16] * -cospi_1_64;
|
|
step[31] = (tran_low_t)fdct_round_shift(temp);
|
|
|
|
range_check(step, 32, 18);
|
|
|
|
// stage 9
|
|
output[0] = step[0];
|
|
output[1] = step[16];
|
|
output[2] = step[8];
|
|
output[3] = step[24];
|
|
output[4] = step[4];
|
|
output[5] = step[20];
|
|
output[6] = step[12];
|
|
output[7] = step[28];
|
|
output[8] = step[2];
|
|
output[9] = step[18];
|
|
output[10] = step[10];
|
|
output[11] = step[26];
|
|
output[12] = step[6];
|
|
output[13] = step[22];
|
|
output[14] = step[14];
|
|
output[15] = step[30];
|
|
output[16] = step[1];
|
|
output[17] = step[17];
|
|
output[18] = step[9];
|
|
output[19] = step[25];
|
|
output[20] = step[5];
|
|
output[21] = step[21];
|
|
output[22] = step[13];
|
|
output[23] = step[29];
|
|
output[24] = step[3];
|
|
output[25] = step[19];
|
|
output[26] = step[11];
|
|
output[27] = step[27];
|
|
output[28] = step[7];
|
|
output[29] = step[23];
|
|
output[30] = step[15];
|
|
output[31] = step[31];
|
|
|
|
range_check(output, 32, 18);
|
|
}
|
|
*/
|
|
|
|
static void fadst4(const tran_low_t *input, tran_low_t *output) {
|
|
tran_high_t x0, x1, x2, x3;
|
|
tran_high_t s0, s1, s2, s3, s4, s5, s6, s7;
|
|
|
|
x0 = input[0];
|
|
x1 = input[1];
|
|
x2 = input[2];
|
|
x3 = input[3];
|
|
|
|
if (!(x0 | x1 | x2 | x3)) {
|
|
output[0] = output[1] = output[2] = output[3] = 0;
|
|
return;
|
|
}
|
|
|
|
s0 = sinpi_1_9 * x0;
|
|
s1 = sinpi_4_9 * x0;
|
|
s2 = sinpi_2_9 * x1;
|
|
s3 = sinpi_1_9 * x1;
|
|
s4 = sinpi_3_9 * x2;
|
|
s5 = sinpi_4_9 * x3;
|
|
s6 = sinpi_2_9 * x3;
|
|
s7 = x0 + x1 - x3;
|
|
|
|
x0 = s0 + s2 + s5;
|
|
x1 = sinpi_3_9 * s7;
|
|
x2 = s1 - s3 + s6;
|
|
x3 = s4;
|
|
|
|
s0 = x0 + x3;
|
|
s1 = x1;
|
|
s2 = x2 - x3;
|
|
s3 = x2 - x0 + x3;
|
|
|
|
// 1-D transform scaling factor is sqrt(2).
|
|
output[0] = (tran_low_t)fdct_round_shift(s0);
|
|
output[1] = (tran_low_t)fdct_round_shift(s1);
|
|
output[2] = (tran_low_t)fdct_round_shift(s2);
|
|
output[3] = (tran_low_t)fdct_round_shift(s3);
|
|
}
|
|
|
|
static void fadst8(const tran_low_t *input, tran_low_t *output) {
|
|
tran_high_t s0, s1, s2, s3, s4, s5, s6, s7;
|
|
|
|
tran_high_t x0 = input[7];
|
|
tran_high_t x1 = input[0];
|
|
tran_high_t x2 = input[5];
|
|
tran_high_t x3 = input[2];
|
|
tran_high_t x4 = input[3];
|
|
tran_high_t x5 = input[4];
|
|
tran_high_t x6 = input[1];
|
|
tran_high_t x7 = input[6];
|
|
|
|
// stage 1
|
|
s0 = cospi_2_64 * x0 + cospi_30_64 * x1;
|
|
s1 = cospi_30_64 * x0 - cospi_2_64 * x1;
|
|
s2 = cospi_10_64 * x2 + cospi_22_64 * x3;
|
|
s3 = cospi_22_64 * x2 - cospi_10_64 * x3;
|
|
s4 = cospi_18_64 * x4 + cospi_14_64 * x5;
|
|
s5 = cospi_14_64 * x4 - cospi_18_64 * x5;
|
|
s6 = cospi_26_64 * x6 + cospi_6_64 * x7;
|
|
s7 = cospi_6_64 * x6 - cospi_26_64 * x7;
|
|
|
|
x0 = fdct_round_shift(s0 + s4);
|
|
x1 = fdct_round_shift(s1 + s5);
|
|
x2 = fdct_round_shift(s2 + s6);
|
|
x3 = fdct_round_shift(s3 + s7);
|
|
x4 = fdct_round_shift(s0 - s4);
|
|
x5 = fdct_round_shift(s1 - s5);
|
|
x6 = fdct_round_shift(s2 - s6);
|
|
x7 = fdct_round_shift(s3 - s7);
|
|
|
|
// stage 2
|
|
s0 = x0;
|
|
s1 = x1;
|
|
s2 = x2;
|
|
s3 = x3;
|
|
s4 = cospi_8_64 * x4 + cospi_24_64 * x5;
|
|
s5 = cospi_24_64 * x4 - cospi_8_64 * x5;
|
|
s6 = - cospi_24_64 * x6 + cospi_8_64 * x7;
|
|
s7 = cospi_8_64 * x6 + cospi_24_64 * x7;
|
|
|
|
x0 = s0 + s2;
|
|
x1 = s1 + s3;
|
|
x2 = s0 - s2;
|
|
x3 = s1 - s3;
|
|
x4 = fdct_round_shift(s4 + s6);
|
|
x5 = fdct_round_shift(s5 + s7);
|
|
x6 = fdct_round_shift(s4 - s6);
|
|
x7 = fdct_round_shift(s5 - s7);
|
|
|
|
// stage 3
|
|
s2 = cospi_16_64 * (x2 + x3);
|
|
s3 = cospi_16_64 * (x2 - x3);
|
|
s6 = cospi_16_64 * (x6 + x7);
|
|
s7 = cospi_16_64 * (x6 - x7);
|
|
|
|
x2 = fdct_round_shift(s2);
|
|
x3 = fdct_round_shift(s3);
|
|
x6 = fdct_round_shift(s6);
|
|
x7 = fdct_round_shift(s7);
|
|
|
|
output[0] = (tran_low_t)x0;
|
|
output[1] = (tran_low_t)-x4;
|
|
output[2] = (tran_low_t)x6;
|
|
output[3] = (tran_low_t)-x2;
|
|
output[4] = (tran_low_t)x3;
|
|
output[5] = (tran_low_t)-x7;
|
|
output[6] = (tran_low_t)x5;
|
|
output[7] = (tran_low_t)-x1;
|
|
}
|
|
|
|
static void fadst16(const tran_low_t *input, tran_low_t *output) {
|
|
tran_high_t s0, s1, s2, s3, s4, s5, s6, s7, s8;
|
|
tran_high_t s9, s10, s11, s12, s13, s14, s15;
|
|
|
|
tran_high_t x0 = input[15];
|
|
tran_high_t x1 = input[0];
|
|
tran_high_t x2 = input[13];
|
|
tran_high_t x3 = input[2];
|
|
tran_high_t x4 = input[11];
|
|
tran_high_t x5 = input[4];
|
|
tran_high_t x6 = input[9];
|
|
tran_high_t x7 = input[6];
|
|
tran_high_t x8 = input[7];
|
|
tran_high_t x9 = input[8];
|
|
tran_high_t x10 = input[5];
|
|
tran_high_t x11 = input[10];
|
|
tran_high_t x12 = input[3];
|
|
tran_high_t x13 = input[12];
|
|
tran_high_t x14 = input[1];
|
|
tran_high_t x15 = input[14];
|
|
|
|
// stage 1
|
|
s0 = x0 * cospi_1_64 + x1 * cospi_31_64;
|
|
s1 = x0 * cospi_31_64 - x1 * cospi_1_64;
|
|
s2 = x2 * cospi_5_64 + x3 * cospi_27_64;
|
|
s3 = x2 * cospi_27_64 - x3 * cospi_5_64;
|
|
s4 = x4 * cospi_9_64 + x5 * cospi_23_64;
|
|
s5 = x4 * cospi_23_64 - x5 * cospi_9_64;
|
|
s6 = x6 * cospi_13_64 + x7 * cospi_19_64;
|
|
s7 = x6 * cospi_19_64 - x7 * cospi_13_64;
|
|
s8 = x8 * cospi_17_64 + x9 * cospi_15_64;
|
|
s9 = x8 * cospi_15_64 - x9 * cospi_17_64;
|
|
s10 = x10 * cospi_21_64 + x11 * cospi_11_64;
|
|
s11 = x10 * cospi_11_64 - x11 * cospi_21_64;
|
|
s12 = x12 * cospi_25_64 + x13 * cospi_7_64;
|
|
s13 = x12 * cospi_7_64 - x13 * cospi_25_64;
|
|
s14 = x14 * cospi_29_64 + x15 * cospi_3_64;
|
|
s15 = x14 * cospi_3_64 - x15 * cospi_29_64;
|
|
|
|
x0 = fdct_round_shift(s0 + s8);
|
|
x1 = fdct_round_shift(s1 + s9);
|
|
x2 = fdct_round_shift(s2 + s10);
|
|
x3 = fdct_round_shift(s3 + s11);
|
|
x4 = fdct_round_shift(s4 + s12);
|
|
x5 = fdct_round_shift(s5 + s13);
|
|
x6 = fdct_round_shift(s6 + s14);
|
|
x7 = fdct_round_shift(s7 + s15);
|
|
x8 = fdct_round_shift(s0 - s8);
|
|
x9 = fdct_round_shift(s1 - s9);
|
|
x10 = fdct_round_shift(s2 - s10);
|
|
x11 = fdct_round_shift(s3 - s11);
|
|
x12 = fdct_round_shift(s4 - s12);
|
|
x13 = fdct_round_shift(s5 - s13);
|
|
x14 = fdct_round_shift(s6 - s14);
|
|
x15 = fdct_round_shift(s7 - s15);
|
|
|
|
// stage 2
|
|
s0 = x0;
|
|
s1 = x1;
|
|
s2 = x2;
|
|
s3 = x3;
|
|
s4 = x4;
|
|
s5 = x5;
|
|
s6 = x6;
|
|
s7 = x7;
|
|
s8 = x8 * cospi_4_64 + x9 * cospi_28_64;
|
|
s9 = x8 * cospi_28_64 - x9 * cospi_4_64;
|
|
s10 = x10 * cospi_20_64 + x11 * cospi_12_64;
|
|
s11 = x10 * cospi_12_64 - x11 * cospi_20_64;
|
|
s12 = - x12 * cospi_28_64 + x13 * cospi_4_64;
|
|
s13 = x12 * cospi_4_64 + x13 * cospi_28_64;
|
|
s14 = - x14 * cospi_12_64 + x15 * cospi_20_64;
|
|
s15 = x14 * cospi_20_64 + x15 * cospi_12_64;
|
|
|
|
x0 = s0 + s4;
|
|
x1 = s1 + s5;
|
|
x2 = s2 + s6;
|
|
x3 = s3 + s7;
|
|
x4 = s0 - s4;
|
|
x5 = s1 - s5;
|
|
x6 = s2 - s6;
|
|
x7 = s3 - s7;
|
|
x8 = fdct_round_shift(s8 + s12);
|
|
x9 = fdct_round_shift(s9 + s13);
|
|
x10 = fdct_round_shift(s10 + s14);
|
|
x11 = fdct_round_shift(s11 + s15);
|
|
x12 = fdct_round_shift(s8 - s12);
|
|
x13 = fdct_round_shift(s9 - s13);
|
|
x14 = fdct_round_shift(s10 - s14);
|
|
x15 = fdct_round_shift(s11 - s15);
|
|
|
|
// stage 3
|
|
s0 = x0;
|
|
s1 = x1;
|
|
s2 = x2;
|
|
s3 = x3;
|
|
s4 = x4 * cospi_8_64 + x5 * cospi_24_64;
|
|
s5 = x4 * cospi_24_64 - x5 * cospi_8_64;
|
|
s6 = - x6 * cospi_24_64 + x7 * cospi_8_64;
|
|
s7 = x6 * cospi_8_64 + x7 * cospi_24_64;
|
|
s8 = x8;
|
|
s9 = x9;
|
|
s10 = x10;
|
|
s11 = x11;
|
|
s12 = x12 * cospi_8_64 + x13 * cospi_24_64;
|
|
s13 = x12 * cospi_24_64 - x13 * cospi_8_64;
|
|
s14 = - x14 * cospi_24_64 + x15 * cospi_8_64;
|
|
s15 = x14 * cospi_8_64 + x15 * cospi_24_64;
|
|
|
|
x0 = s0 + s2;
|
|
x1 = s1 + s3;
|
|
x2 = s0 - s2;
|
|
x3 = s1 - s3;
|
|
x4 = fdct_round_shift(s4 + s6);
|
|
x5 = fdct_round_shift(s5 + s7);
|
|
x6 = fdct_round_shift(s4 - s6);
|
|
x7 = fdct_round_shift(s5 - s7);
|
|
x8 = s8 + s10;
|
|
x9 = s9 + s11;
|
|
x10 = s8 - s10;
|
|
x11 = s9 - s11;
|
|
x12 = fdct_round_shift(s12 + s14);
|
|
x13 = fdct_round_shift(s13 + s15);
|
|
x14 = fdct_round_shift(s12 - s14);
|
|
x15 = fdct_round_shift(s13 - s15);
|
|
|
|
// stage 4
|
|
s2 = (- cospi_16_64) * (x2 + x3);
|
|
s3 = cospi_16_64 * (x2 - x3);
|
|
s6 = cospi_16_64 * (x6 + x7);
|
|
s7 = cospi_16_64 * (- x6 + x7);
|
|
s10 = cospi_16_64 * (x10 + x11);
|
|
s11 = cospi_16_64 * (- x10 + x11);
|
|
s14 = (- cospi_16_64) * (x14 + x15);
|
|
s15 = cospi_16_64 * (x14 - x15);
|
|
|
|
x2 = fdct_round_shift(s2);
|
|
x3 = fdct_round_shift(s3);
|
|
x6 = fdct_round_shift(s6);
|
|
x7 = fdct_round_shift(s7);
|
|
x10 = fdct_round_shift(s10);
|
|
x11 = fdct_round_shift(s11);
|
|
x14 = fdct_round_shift(s14);
|
|
x15 = fdct_round_shift(s15);
|
|
|
|
output[0] = (tran_low_t)x0;
|
|
output[1] = (tran_low_t)-x8;
|
|
output[2] = (tran_low_t)x12;
|
|
output[3] = (tran_low_t)-x4;
|
|
output[4] = (tran_low_t)x6;
|
|
output[5] = (tran_low_t)x14;
|
|
output[6] = (tran_low_t)x10;
|
|
output[7] = (tran_low_t)x2;
|
|
output[8] = (tran_low_t)x3;
|
|
output[9] = (tran_low_t)x11;
|
|
output[10] = (tran_low_t)x15;
|
|
output[11] = (tran_low_t)x7;
|
|
output[12] = (tran_low_t)x5;
|
|
output[13] = (tran_low_t)-x13;
|
|
output[14] = (tran_low_t)x9;
|
|
output[15] = (tran_low_t)-x1;
|
|
}
|
|
|
|
#if CONFIG_EXT_TX
|
|
static void copy_block(const int16_t *src, int src_stride, int l,
|
|
int16_t *dest, int dest_stride) {
|
|
int i;
|
|
for (i = 0; i < l; ++i) {
|
|
memcpy(dest + dest_stride * i, src + src_stride * i,
|
|
l * sizeof(int16_t));
|
|
}
|
|
}
|
|
|
|
static void fliplr(int16_t *dest, int stride, int l) {
|
|
int i, j;
|
|
for (i = 0; i < l; ++i) {
|
|
for (j = 0; j < l / 2; ++j) {
|
|
const int16_t tmp = dest[i * stride + j];
|
|
dest[i * stride + j] = dest[i * stride + l - 1 - j];
|
|
dest[i * stride + l - 1 - j] = tmp;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void flipud(int16_t *dest, int stride, int l) {
|
|
int i, j;
|
|
for (j = 0; j < l; ++j) {
|
|
for (i = 0; i < l / 2; ++i) {
|
|
const int16_t tmp = dest[i * stride + j];
|
|
dest[i * stride + j] = dest[(l - 1 - i) * stride + j];
|
|
dest[(l - 1 - i) * stride + j] = tmp;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void fliplrud(int16_t *dest, int stride, int l) {
|
|
int i, j;
|
|
for (i = 0; i < l / 2; ++i) {
|
|
for (j = 0; j < l; ++j) {
|
|
const int16_t tmp = dest[i * stride + j];
|
|
dest[i * stride + j] = dest[(l - 1 - i) * stride + l - 1 - j];
|
|
dest[(l - 1 - i) * stride + l - 1 - j] = tmp;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void copy_fliplr(const int16_t *src, int src_stride, int l,
|
|
int16_t *dest, int dest_stride) {
|
|
copy_block(src, src_stride, l, dest, dest_stride);
|
|
fliplr(dest, dest_stride, l);
|
|
}
|
|
|
|
static void copy_flipud(const int16_t *src, int src_stride, int l,
|
|
int16_t *dest, int dest_stride) {
|
|
copy_block(src, src_stride, l, dest, dest_stride);
|
|
flipud(dest, dest_stride, l);
|
|
}
|
|
|
|
static void copy_fliplrud(const int16_t *src, int src_stride, int l,
|
|
int16_t *dest, int dest_stride) {
|
|
copy_block(src, src_stride, l, dest, dest_stride);
|
|
fliplrud(dest, dest_stride, l);
|
|
}
|
|
|
|
static void maybe_flip_input(const int16_t **src, int *src_stride, int l,
|
|
int16_t *buff, int tx_type) {
|
|
switch (tx_type) {
|
|
case DCT_DCT:
|
|
case ADST_DCT:
|
|
case DCT_ADST:
|
|
case ADST_ADST:
|
|
case DST_DST:
|
|
case DCT_DST:
|
|
case DST_DCT:
|
|
case DST_ADST:
|
|
case ADST_DST:
|
|
break;
|
|
case FLIPADST_DCT:
|
|
case FLIPADST_ADST:
|
|
case FLIPADST_DST:
|
|
copy_flipud(*src, *src_stride, l, buff, l);
|
|
*src = buff;
|
|
*src_stride = l;
|
|
break;
|
|
case DCT_FLIPADST:
|
|
case ADST_FLIPADST:
|
|
case DST_FLIPADST:
|
|
copy_fliplr(*src, *src_stride, l, buff, l);
|
|
*src = buff;
|
|
*src_stride = l;
|
|
break;
|
|
case FLIPADST_FLIPADST:
|
|
copy_fliplrud(*src, *src_stride, l, buff, l);
|
|
*src = buff;
|
|
*src_stride = l;
|
|
break;
|
|
default:
|
|
assert(0);
|
|
break;
|
|
}
|
|
}
|
|
#endif // CONFIG_EXT_TX
|
|
|
|
static const transform_2d FHT_4[] = {
|
|
{ fdct4, fdct4 }, // DCT_DCT = 0,
|
|
{ fadst4, fdct4 }, // ADST_DCT = 1,
|
|
{ fdct4, fadst4 }, // DCT_ADST = 2,
|
|
{ fadst4, fadst4 }, // ADST_ADST = 3,
|
|
#if CONFIG_EXT_TX
|
|
{ fadst4, fdct4 }, // FLIPADST_DCT = 4,
|
|
{ fdct4, fadst4 }, // DCT_FLIPADST = 5,
|
|
{ fadst4, fadst4 }, // FLIPADST_FLIPADST = 6,
|
|
{ fadst4, fadst4 }, // ADST_FLIPADST = 7,
|
|
{ fadst4, fadst4 }, // FLIPADST_ADST = 8,
|
|
{ fdst4, fdct4 }, // DST_DCT = 9,
|
|
{ fdct4, fdst4 }, // DCT_DST = 10,
|
|
{ fdst4, fadst4 }, // DST_ADST = 11,
|
|
{ fadst4, fdst4 }, // ADST_DST = 12,
|
|
{ fdst4, fadst4 }, // DST_FLIPADST = 13,
|
|
{ fadst4, fdst4 }, // FLIPADST_DST = 14,
|
|
{ fdst4, fdst4 }, // DST_DST = 15
|
|
#endif // CONFIG_EXT_TX
|
|
};
|
|
|
|
static const transform_2d FHT_8[] = {
|
|
{ fdct8, fdct8 }, // DCT_DCT = 0,
|
|
{ fadst8, fdct8 }, // ADST_DCT = 1,
|
|
{ fdct8, fadst8 }, // DCT_ADST = 2,
|
|
{ fadst8, fadst8 }, // ADST_ADST = 3,
|
|
#if CONFIG_EXT_TX
|
|
{ fadst8, fdct8 }, // FLIPADST_DCT = 4,
|
|
{ fdct8, fadst8 }, // DCT_FLIPADST = 5,
|
|
{ fadst8, fadst8 }, // FLIPADST_FLIPADST = 6,
|
|
{ fadst8, fadst8 }, // ADST_FLIPADST = 7,
|
|
{ fadst8, fadst8 }, // FLIPADST_ADST = 8,
|
|
{ fdst8, fdct8 }, // DST_DCT = 9,
|
|
{ fdct8, fdst8 }, // DCT_DST = 10,
|
|
{ fdst8, fadst8 }, // DST_ADST = 11,
|
|
{ fadst8, fdst8 }, // ADST_DST = 12,
|
|
{ fdst8, fadst8 }, // DST_FLIPADST = 13,
|
|
{ fadst8, fdst8 }, // FLIPADST_DST = 14,
|
|
{ fdst8, fdst8 }, // DST_DST = 15
|
|
#endif // CONFIG_EXT_TX
|
|
};
|
|
|
|
static const transform_2d FHT_16[] = {
|
|
{ fdct16, fdct16 }, // DCT_DCT = 0,
|
|
{ fadst16, fdct16 }, // ADST_DCT = 1,
|
|
{ fdct16, fadst16 }, // DCT_ADST = 2,
|
|
{ fadst16, fadst16 }, // ADST_ADST = 3,
|
|
#if CONFIG_EXT_TX
|
|
{ fadst16, fdct16 }, // FLIPADST_DCT = 4,
|
|
{ fdct16, fadst16 }, // DCT_FLIPADST = 5,
|
|
{ fadst16, fadst16 }, // FLIPADST_FLIPADST = 6,
|
|
{ fadst16, fadst16 }, // ADST_FLIPADST = 7,
|
|
{ fadst16, fadst16 }, // FLIPADST_ADST = 8,
|
|
{ fdst16, fdct16 }, // DST_DCT = 9,
|
|
{ fdct16, fdst16 }, // DCT_DST = 10,
|
|
{ fdst16, fadst16 }, // DST_ADST = 11,
|
|
{ fadst16, fdst16 }, // ADST_DST = 12,
|
|
{ fdst16, fadst16 }, // DST_FLIPADST = 13,
|
|
{ fadst16, fdst16 }, // FLIPADST_DST = 14,
|
|
{ fdst16, fdst16 }, // DST_DST = 15
|
|
#endif // CONFIG_EXT_TX
|
|
};
|
|
|
|
void vp10_fht4x4_c(const int16_t *input, tran_low_t *output,
|
|
int stride, int tx_type) {
|
|
if (tx_type == DCT_DCT) {
|
|
vpx_fdct4x4_c(input, output, stride);
|
|
} else {
|
|
tran_low_t out[4 * 4];
|
|
int i, j;
|
|
tran_low_t temp_in[4], temp_out[4];
|
|
const transform_2d ht = FHT_4[tx_type];
|
|
|
|
#if CONFIG_EXT_TX
|
|
int16_t flipped_input[4 * 4];
|
|
maybe_flip_input(&input, &stride, 4, flipped_input, tx_type);
|
|
#endif
|
|
|
|
// Columns
|
|
for (i = 0; i < 4; ++i) {
|
|
for (j = 0; j < 4; ++j)
|
|
temp_in[j] = input[j * stride + i] * 16;
|
|
if (i == 0 && temp_in[0])
|
|
temp_in[0] += 1;
|
|
ht.cols(temp_in, temp_out);
|
|
for (j = 0; j < 4; ++j)
|
|
out[j * 4 + i] = temp_out[j];
|
|
}
|
|
|
|
// Rows
|
|
for (i = 0; i < 4; ++i) {
|
|
for (j = 0; j < 4; ++j)
|
|
temp_in[j] = out[j + i * 4];
|
|
ht.rows(temp_in, temp_out);
|
|
for (j = 0; j < 4; ++j)
|
|
output[j + i * 4] = (temp_out[j] + 1) >> 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
void vp10_fdct8x8_quant_c(const int16_t *input, int stride,
|
|
tran_low_t *coeff_ptr, intptr_t n_coeffs,
|
|
int skip_block,
|
|
const int16_t *zbin_ptr, const int16_t *round_ptr,
|
|
const int16_t *quant_ptr,
|
|
const int16_t *quant_shift_ptr,
|
|
tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
|
|
const int16_t *dequant_ptr,
|
|
uint16_t *eob_ptr,
|
|
const int16_t *scan, const int16_t *iscan) {
|
|
int eob = -1;
|
|
|
|
int i, j;
|
|
tran_low_t intermediate[64];
|
|
|
|
// Transform columns
|
|
{
|
|
tran_low_t *output = intermediate;
|
|
tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; // canbe16
|
|
tran_high_t t0, t1, t2, t3; // needs32
|
|
tran_high_t x0, x1, x2, x3; // canbe16
|
|
|
|
int i;
|
|
for (i = 0; i < 8; i++) {
|
|
// stage 1
|
|
s0 = (input[0 * stride] + input[7 * stride]) * 4;
|
|
s1 = (input[1 * stride] + input[6 * stride]) * 4;
|
|
s2 = (input[2 * stride] + input[5 * stride]) * 4;
|
|
s3 = (input[3 * stride] + input[4 * stride]) * 4;
|
|
s4 = (input[3 * stride] - input[4 * stride]) * 4;
|
|
s5 = (input[2 * stride] - input[5 * stride]) * 4;
|
|
s6 = (input[1 * stride] - input[6 * stride]) * 4;
|
|
s7 = (input[0 * stride] - input[7 * stride]) * 4;
|
|
|
|
// fdct4(step, step);
|
|
x0 = s0 + s3;
|
|
x1 = s1 + s2;
|
|
x2 = s1 - s2;
|
|
x3 = s0 - s3;
|
|
t0 = (x0 + x1) * cospi_16_64;
|
|
t1 = (x0 - x1) * cospi_16_64;
|
|
t2 = x2 * cospi_24_64 + x3 * cospi_8_64;
|
|
t3 = -x2 * cospi_8_64 + x3 * cospi_24_64;
|
|
output[0 * 8] = (tran_low_t)fdct_round_shift(t0);
|
|
output[2 * 8] = (tran_low_t)fdct_round_shift(t2);
|
|
output[4 * 8] = (tran_low_t)fdct_round_shift(t1);
|
|
output[6 * 8] = (tran_low_t)fdct_round_shift(t3);
|
|
|
|
// stage 2
|
|
t0 = (s6 - s5) * cospi_16_64;
|
|
t1 = (s6 + s5) * cospi_16_64;
|
|
t2 = fdct_round_shift(t0);
|
|
t3 = fdct_round_shift(t1);
|
|
|
|
// stage 3
|
|
x0 = s4 + t2;
|
|
x1 = s4 - t2;
|
|
x2 = s7 - t3;
|
|
x3 = s7 + t3;
|
|
|
|
// stage 4
|
|
t0 = x0 * cospi_28_64 + x3 * cospi_4_64;
|
|
t1 = x1 * cospi_12_64 + x2 * cospi_20_64;
|
|
t2 = x2 * cospi_12_64 + x1 * -cospi_20_64;
|
|
t3 = x3 * cospi_28_64 + x0 * -cospi_4_64;
|
|
output[1 * 8] = (tran_low_t)fdct_round_shift(t0);
|
|
output[3 * 8] = (tran_low_t)fdct_round_shift(t2);
|
|
output[5 * 8] = (tran_low_t)fdct_round_shift(t1);
|
|
output[7 * 8] = (tran_low_t)fdct_round_shift(t3);
|
|
input++;
|
|
output++;
|
|
}
|
|
}
|
|
|
|
// Rows
|
|
for (i = 0; i < 8; ++i) {
|
|
fdct8(&intermediate[i * 8], &coeff_ptr[i * 8]);
|
|
for (j = 0; j < 8; ++j)
|
|
coeff_ptr[j + i * 8] /= 2;
|
|
}
|
|
|
|
// TODO(jingning) Decide the need of these arguments after the
|
|
// quantization process is completed.
|
|
(void)zbin_ptr;
|
|
(void)quant_shift_ptr;
|
|
(void)iscan;
|
|
|
|
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
|
|
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
|
|
|
|
if (!skip_block) {
|
|
// Quantization pass: All coefficients with index >= zero_flag are
|
|
// skippable. Note: zero_flag can be zero.
|
|
for (i = 0; i < n_coeffs; i++) {
|
|
const int rc = scan[i];
|
|
const int coeff = coeff_ptr[rc];
|
|
const int coeff_sign = (coeff >> 31);
|
|
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
|
|
|
|
int tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
|
|
tmp = (tmp * quant_ptr[rc != 0]) >> 16;
|
|
|
|
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
|
|
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0];
|
|
|
|
if (tmp)
|
|
eob = i;
|
|
}
|
|
}
|
|
*eob_ptr = eob + 1;
|
|
}
|
|
|
|
void vp10_fht8x8_c(const int16_t *input, tran_low_t *output,
|
|
int stride, int tx_type) {
|
|
if (tx_type == DCT_DCT) {
|
|
vpx_fdct8x8_c(input, output, stride);
|
|
} else {
|
|
tran_low_t out[64];
|
|
int i, j;
|
|
tran_low_t temp_in[8], temp_out[8];
|
|
const transform_2d ht = FHT_8[tx_type];
|
|
|
|
#if CONFIG_EXT_TX
|
|
int16_t flipped_input[8 * 8];
|
|
maybe_flip_input(&input, &stride, 8, flipped_input, tx_type);
|
|
#endif
|
|
|
|
// Columns
|
|
for (i = 0; i < 8; ++i) {
|
|
for (j = 0; j < 8; ++j)
|
|
temp_in[j] = input[j * stride + i] * 4;
|
|
ht.cols(temp_in, temp_out);
|
|
for (j = 0; j < 8; ++j)
|
|
out[j * 8 + i] = temp_out[j];
|
|
}
|
|
|
|
// Rows
|
|
for (i = 0; i < 8; ++i) {
|
|
for (j = 0; j < 8; ++j)
|
|
temp_in[j] = out[j + i * 8];
|
|
ht.rows(temp_in, temp_out);
|
|
for (j = 0; j < 8; ++j)
|
|
output[j + i * 8] = (temp_out[j] + (temp_out[j] < 0)) >> 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 4-point reversible, orthonormal Walsh-Hadamard in 3.5 adds, 0.5 shifts per
|
|
pixel. */
|
|
void vp10_fwht4x4_c(const int16_t *input, tran_low_t *output, int stride) {
|
|
int i;
|
|
tran_high_t a1, b1, c1, d1, e1;
|
|
const int16_t *ip_pass0 = input;
|
|
const tran_low_t *ip = NULL;
|
|
tran_low_t *op = output;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = ip_pass0[0 * stride];
|
|
b1 = ip_pass0[1 * stride];
|
|
c1 = ip_pass0[2 * stride];
|
|
d1 = ip_pass0[3 * stride];
|
|
|
|
a1 += b1;
|
|
d1 = d1 - c1;
|
|
e1 = (a1 - d1) >> 1;
|
|
b1 = e1 - b1;
|
|
c1 = e1 - c1;
|
|
a1 -= c1;
|
|
d1 += b1;
|
|
op[0] = (tran_low_t)a1;
|
|
op[4] = (tran_low_t)c1;
|
|
op[8] = (tran_low_t)d1;
|
|
op[12] = (tran_low_t)b1;
|
|
|
|
ip_pass0++;
|
|
op++;
|
|
}
|
|
ip = output;
|
|
op = output;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
a1 = ip[0];
|
|
b1 = ip[1];
|
|
c1 = ip[2];
|
|
d1 = ip[3];
|
|
|
|
a1 += b1;
|
|
d1 -= c1;
|
|
e1 = (a1 - d1) >> 1;
|
|
b1 = e1 - b1;
|
|
c1 = e1 - c1;
|
|
a1 -= c1;
|
|
d1 += b1;
|
|
op[0] = (tran_low_t)(a1 * UNIT_QUANT_FACTOR);
|
|
op[1] = (tran_low_t)(c1 * UNIT_QUANT_FACTOR);
|
|
op[2] = (tran_low_t)(d1 * UNIT_QUANT_FACTOR);
|
|
op[3] = (tran_low_t)(b1 * UNIT_QUANT_FACTOR);
|
|
|
|
ip += 4;
|
|
op += 4;
|
|
}
|
|
}
|
|
|
|
void vp10_fht16x16_c(const int16_t *input, tran_low_t *output,
|
|
int stride, int tx_type) {
|
|
if (tx_type == DCT_DCT) {
|
|
vpx_fdct16x16_c(input, output, stride);
|
|
} else {
|
|
tran_low_t out[256];
|
|
int i, j;
|
|
tran_low_t temp_in[16], temp_out[16];
|
|
const transform_2d ht = FHT_16[tx_type];
|
|
|
|
#if CONFIG_EXT_TX
|
|
int16_t flipped_input[16 * 16];
|
|
maybe_flip_input(&input, &stride, 16, flipped_input, tx_type);
|
|
#endif
|
|
|
|
// Columns
|
|
for (i = 0; i < 16; ++i) {
|
|
for (j = 0; j < 16; ++j)
|
|
temp_in[j] = input[j * stride + i] * 4;
|
|
ht.cols(temp_in, temp_out);
|
|
for (j = 0; j < 16; ++j)
|
|
out[j * 16 + i] = (temp_out[j] + 1 + (temp_out[j] < 0)) >> 2;
|
|
}
|
|
|
|
// Rows
|
|
for (i = 0; i < 16; ++i) {
|
|
for (j = 0; j < 16; ++j)
|
|
temp_in[j] = out[j + i * 16];
|
|
ht.rows(temp_in, temp_out);
|
|
for (j = 0; j < 16; ++j)
|
|
output[j + i * 16] = temp_out[j];
|
|
}
|
|
}
|
|
}
|
|
|
|
#if CONFIG_VP9_HIGHBITDEPTH
|
|
void vp10_highbd_fht4x4_c(const int16_t *input, tran_low_t *output,
|
|
int stride, int tx_type) {
|
|
vp10_fht4x4_c(input, output, stride, tx_type);
|
|
}
|
|
|
|
void vp10_highbd_fht8x8_c(const int16_t *input, tran_low_t *output,
|
|
int stride, int tx_type) {
|
|
vp10_fht8x8_c(input, output, stride, tx_type);
|
|
}
|
|
|
|
void vp10_highbd_fwht4x4_c(const int16_t *input, tran_low_t *output,
|
|
int stride) {
|
|
vp10_fwht4x4_c(input, output, stride);
|
|
}
|
|
|
|
void vp10_highbd_fht16x16_c(const int16_t *input, tran_low_t *output,
|
|
int stride, int tx_type) {
|
|
vp10_fht16x16_c(input, output, stride, tx_type);
|
|
}
|
|
#endif // CONFIG_VP9_HIGHBITDEPTH
|