550 lines
19 KiB
C++
550 lines
19 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 "test/acm_random.h"
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#include "test/register_state_check.h"
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#include "test/util.h"
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#include "third_party/googletest/src/include/gtest/gtest.h"
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extern "C" {
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#include "./vpx_config.h"
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#include "./vp9_rtcd.h"
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#include "vp9/common/vp9_filter.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vpx_ports/mem.h"
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}
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namespace {
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typedef void (*convolve_fn_t)(const uint8_t *src, int src_stride,
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uint8_t *dst, int dst_stride,
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const int16_t *filter_x, int filter_x_stride,
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const int16_t *filter_y, int filter_y_stride,
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int w, int h);
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struct ConvolveFunctions {
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ConvolveFunctions(convolve_fn_t h8, convolve_fn_t h8_avg,
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convolve_fn_t v8, convolve_fn_t v8_avg,
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convolve_fn_t hv8, convolve_fn_t hv8_avg)
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: h8_(h8), v8_(v8), hv8_(hv8), h8_avg_(h8_avg), v8_avg_(v8_avg),
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hv8_avg_(hv8_avg) {}
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convolve_fn_t h8_;
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convolve_fn_t v8_;
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convolve_fn_t hv8_;
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convolve_fn_t h8_avg_;
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convolve_fn_t v8_avg_;
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convolve_fn_t hv8_avg_;
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};
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// Reference 8-tap subpixel filter, slightly modified to fit into this test.
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#define VP9_FILTER_WEIGHT 128
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#define VP9_FILTER_SHIFT 7
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uint8_t clip_pixel(int x) {
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return x < 0 ? 0 :
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x > 255 ? 255 :
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x;
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}
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void filter_block2d_8_c(const uint8_t *src_ptr,
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const unsigned int src_stride,
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const int16_t *HFilter,
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const int16_t *VFilter,
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uint8_t *dst_ptr,
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unsigned int dst_stride,
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unsigned int output_width,
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unsigned int output_height) {
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// Between passes, we use an intermediate buffer whose height is extended to
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// have enough horizontally filtered values as input for the vertical pass.
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// This buffer is allocated to be big enough for the largest block type we
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// support.
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const int kInterp_Extend = 4;
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const unsigned int intermediate_height =
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(kInterp_Extend - 1) + output_height + kInterp_Extend;
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/* Size of intermediate_buffer is max_intermediate_height * filter_max_width,
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* where max_intermediate_height = (kInterp_Extend - 1) + filter_max_height
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* + kInterp_Extend
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* = 3 + 16 + 4
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* = 23
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* and filter_max_width = 16
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*/
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uint8_t intermediate_buffer[71 * 64];
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const int intermediate_next_stride = 1 - intermediate_height * output_width;
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// Horizontal pass (src -> transposed intermediate).
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{
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uint8_t *output_ptr = intermediate_buffer;
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const int src_next_row_stride = src_stride - output_width;
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unsigned int i, j;
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src_ptr -= (kInterp_Extend - 1) * src_stride + (kInterp_Extend - 1);
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for (i = 0; i < intermediate_height; ++i) {
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for (j = 0; j < output_width; ++j) {
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// Apply filter...
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const int temp = (src_ptr[0] * HFilter[0]) +
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(src_ptr[1] * HFilter[1]) +
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(src_ptr[2] * HFilter[2]) +
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(src_ptr[3] * HFilter[3]) +
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(src_ptr[4] * HFilter[4]) +
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(src_ptr[5] * HFilter[5]) +
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(src_ptr[6] * HFilter[6]) +
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(src_ptr[7] * HFilter[7]) +
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(VP9_FILTER_WEIGHT >> 1); // Rounding
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// Normalize back to 0-255...
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*output_ptr = clip_pixel(temp >> VP9_FILTER_SHIFT);
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++src_ptr;
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output_ptr += intermediate_height;
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}
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src_ptr += src_next_row_stride;
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output_ptr += intermediate_next_stride;
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}
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}
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// Vertical pass (transposed intermediate -> dst).
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{
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uint8_t *src_ptr = intermediate_buffer;
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const int dst_next_row_stride = dst_stride - output_width;
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unsigned int i, j;
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for (i = 0; i < output_height; ++i) {
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for (j = 0; j < output_width; ++j) {
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// Apply filter...
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const int temp = (src_ptr[0] * VFilter[0]) +
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(src_ptr[1] * VFilter[1]) +
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(src_ptr[2] * VFilter[2]) +
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(src_ptr[3] * VFilter[3]) +
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(src_ptr[4] * VFilter[4]) +
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(src_ptr[5] * VFilter[5]) +
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(src_ptr[6] * VFilter[6]) +
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(src_ptr[7] * VFilter[7]) +
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(VP9_FILTER_WEIGHT >> 1); // Rounding
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// Normalize back to 0-255...
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*dst_ptr++ = clip_pixel(temp >> VP9_FILTER_SHIFT);
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src_ptr += intermediate_height;
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}
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src_ptr += intermediate_next_stride;
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dst_ptr += dst_next_row_stride;
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}
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}
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}
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void block2d_average_c(uint8_t *src,
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unsigned int src_stride,
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uint8_t *output_ptr,
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unsigned int output_stride,
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unsigned int output_width,
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unsigned int output_height) {
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unsigned int i, j;
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for (i = 0; i < output_height; ++i) {
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for (j = 0; j < output_width; ++j) {
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output_ptr[j] = (output_ptr[j] + src[i * src_stride + j] + 1) >> 1;
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}
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output_ptr += output_stride;
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}
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}
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void filter_average_block2d_8_c(const uint8_t *src_ptr,
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const unsigned int src_stride,
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const int16_t *HFilter,
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const int16_t *VFilter,
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uint8_t *dst_ptr,
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unsigned int dst_stride,
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unsigned int output_width,
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unsigned int output_height) {
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uint8_t tmp[64 * 64];
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assert(output_width <= 64);
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assert(output_height <= 64);
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filter_block2d_8_c(src_ptr, src_stride, HFilter, VFilter, tmp, 64,
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output_width, output_height);
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block2d_average_c(tmp, 64, dst_ptr, dst_stride,
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output_width, output_height);
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}
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class ConvolveTest : public PARAMS(int, int, const ConvolveFunctions*) {
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public:
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static void SetUpTestCase() {
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// Force input_ to be unaligned, output to be 16 byte aligned.
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input_ = reinterpret_cast<uint8_t*>(
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vpx_memalign(kDataAlignment, kInputBufferSize + 1)) + 1;
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output_ = reinterpret_cast<uint8_t*>(
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vpx_memalign(kDataAlignment, kOutputBufferSize));
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}
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static void TearDownTestCase() {
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vpx_free(input_ - 1);
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input_ = NULL;
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vpx_free(output_);
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output_ = NULL;
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}
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protected:
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static const int kDataAlignment = 16;
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static const int kOuterBlockSize = 128;
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static const int kInputStride = kOuterBlockSize;
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static const int kOutputStride = kOuterBlockSize;
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static const int kMaxDimension = 64;
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static const int kInputBufferSize = kOuterBlockSize * kOuterBlockSize;
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static const int kOutputBufferSize = kOuterBlockSize * kOuterBlockSize;
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int Width() const { return GET_PARAM(0); }
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int Height() const { return GET_PARAM(1); }
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int BorderLeft() const {
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const int center = (kOuterBlockSize - Width()) / 2;
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return (center + (kDataAlignment - 1)) & ~(kDataAlignment - 1);
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}
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int BorderTop() const { return (kOuterBlockSize - Height()) / 2; }
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bool IsIndexInBorder(int i) {
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return (i < BorderTop() * kOuterBlockSize ||
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i >= (BorderTop() + Height()) * kOuterBlockSize ||
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i % kOuterBlockSize < BorderLeft() ||
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i % kOuterBlockSize >= (BorderLeft() + Width()));
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}
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virtual void SetUp() {
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UUT_ = GET_PARAM(2);
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/* Set up guard blocks for an inner block cetered in the outer block */
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for (int i = 0; i < kOutputBufferSize; ++i) {
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if (IsIndexInBorder(i))
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output_[i] = 255;
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else
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output_[i] = 0;
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}
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::libvpx_test::ACMRandom prng;
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for (int i = 0; i < kInputBufferSize; ++i)
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input_[i] = prng.Rand8Extremes();
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}
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void CheckGuardBlocks() {
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for (int i = 0; i < kOutputBufferSize; ++i) {
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if (IsIndexInBorder(i))
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EXPECT_EQ(255, output_[i]);
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}
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}
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uint8_t* input() const {
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return input_ + BorderTop() * kOuterBlockSize + BorderLeft();
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}
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uint8_t* output() const {
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return output_ + BorderTop() * kOuterBlockSize + BorderLeft();
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}
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const ConvolveFunctions* UUT_;
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static uint8_t* input_;
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static uint8_t* output_;
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};
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uint8_t* ConvolveTest::input_ = NULL;
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uint8_t* ConvolveTest::output_ = NULL;
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TEST_P(ConvolveTest, GuardBlocks) {
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CheckGuardBlocks();
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}
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TEST_P(ConvolveTest, CopyHoriz) {
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uint8_t* const in = input();
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uint8_t* const out = output();
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DECLARE_ALIGNED(256, const int16_t, filter8[8]) = {0, 0, 0, 128, 0, 0, 0, 0};
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REGISTER_STATE_CHECK(
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UUT_->h8_(in, kInputStride, out, kOutputStride, filter8, 16, filter8, 16,
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Width(), Height()));
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CheckGuardBlocks();
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for (int y = 0; y < Height(); ++y)
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for (int x = 0; x < Width(); ++x)
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ASSERT_EQ(out[y * kOutputStride + x], in[y * kInputStride + x])
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<< "(" << x << "," << y << ")";
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}
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TEST_P(ConvolveTest, CopyVert) {
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uint8_t* const in = input();
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uint8_t* const out = output();
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DECLARE_ALIGNED(256, const int16_t, filter8[8]) = {0, 0, 0, 128, 0, 0, 0, 0};
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REGISTER_STATE_CHECK(
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UUT_->v8_(in, kInputStride, out, kOutputStride, filter8, 16, filter8, 16,
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Width(), Height()));
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CheckGuardBlocks();
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for (int y = 0; y < Height(); ++y)
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for (int x = 0; x < Width(); ++x)
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ASSERT_EQ(out[y * kOutputStride + x], in[y * kInputStride + x])
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<< "(" << x << "," << y << ")";
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}
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TEST_P(ConvolveTest, Copy2D) {
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uint8_t* const in = input();
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uint8_t* const out = output();
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DECLARE_ALIGNED(256, const int16_t, filter8[8]) = {0, 0, 0, 128, 0, 0, 0, 0};
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REGISTER_STATE_CHECK(
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UUT_->hv8_(in, kInputStride, out, kOutputStride, filter8, 16, filter8, 16,
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Width(), Height()));
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CheckGuardBlocks();
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for (int y = 0; y < Height(); ++y)
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for (int x = 0; x < Width(); ++x)
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ASSERT_EQ(out[y * kOutputStride + x], in[y * kInputStride + x])
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<< "(" << x << "," << y << ")";
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}
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const int16_t (*kTestFilterList[])[8] = {
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vp9_bilinear_filters,
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vp9_sub_pel_filters_8,
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vp9_sub_pel_filters_8s,
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vp9_sub_pel_filters_8lp
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};
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const int kNumFilterBanks = sizeof(kTestFilterList) /
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sizeof(kTestFilterList[0]);
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const int kNumFilters = 16;
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TEST(ConvolveTest, FiltersWontSaturateWhenAddedPairwise) {
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for (int filter_bank = 0; filter_bank < kNumFilterBanks; ++filter_bank) {
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const int16_t (*filters)[8] = kTestFilterList[filter_bank];
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for (int i = 0; i < kNumFilters; i++) {
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const int p0 = filters[i][0] + filters[i][1];
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const int p1 = filters[i][2] + filters[i][3];
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const int p2 = filters[i][4] + filters[i][5];
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const int p3 = filters[i][6] + filters[i][7];
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EXPECT_LE(p0, 128);
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EXPECT_LE(p1, 128);
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EXPECT_LE(p2, 128);
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EXPECT_LE(p3, 128);
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EXPECT_LE(p0 + p3, 128);
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EXPECT_LE(p0 + p3 + p1, 128);
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EXPECT_LE(p0 + p3 + p1 + p2, 128);
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EXPECT_EQ(p0 + p1 + p2 + p3, 128);
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}
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}
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}
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const int16_t kInvalidFilter[8] = { 0 };
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TEST_P(ConvolveTest, MatchesReferenceSubpixelFilter) {
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uint8_t* const in = input();
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uint8_t* const out = output();
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uint8_t ref[kOutputStride * kMaxDimension];
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for (int filter_bank = 0; filter_bank < kNumFilterBanks; ++filter_bank) {
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const int16_t (*filters)[8] = kTestFilterList[filter_bank];
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for (int filter_x = 0; filter_x < kNumFilters; ++filter_x) {
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for (int filter_y = 0; filter_y < kNumFilters; ++filter_y) {
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filter_block2d_8_c(in, kInputStride,
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filters[filter_x], filters[filter_y],
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ref, kOutputStride,
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Width(), Height());
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if (filters == vp9_sub_pel_filters_8lp || (filter_x && filter_y))
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REGISTER_STATE_CHECK(
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UUT_->hv8_(in, kInputStride, out, kOutputStride,
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filters[filter_x], 16, filters[filter_y], 16,
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Width(), Height()));
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else if (filter_y)
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REGISTER_STATE_CHECK(
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UUT_->v8_(in, kInputStride, out, kOutputStride,
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kInvalidFilter, 16, filters[filter_y], 16,
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Width(), Height()));
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else
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REGISTER_STATE_CHECK(
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UUT_->h8_(in, kInputStride, out, kOutputStride,
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filters[filter_x], 16, kInvalidFilter, 16,
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Width(), Height()));
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CheckGuardBlocks();
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for (int y = 0; y < Height(); ++y)
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for (int x = 0; x < Width(); ++x)
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ASSERT_EQ(ref[y * kOutputStride + x], out[y * kOutputStride + x])
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<< "mismatch at (" << x << "," << y << "), "
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<< "filters (" << filter_bank << ","
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<< filter_x << "," << filter_y << ")";
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}
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}
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}
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}
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TEST_P(ConvolveTest, MatchesReferenceAveragingSubpixelFilter) {
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uint8_t* const in = input();
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uint8_t* const out = output();
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uint8_t ref[kOutputStride * kMaxDimension];
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// Populate ref and out with some random data
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::libvpx_test::ACMRandom prng;
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for (int y = 0; y < Height(); ++y) {
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for (int x = 0; x < Width(); ++x) {
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const uint8_t r = prng.Rand8Extremes();
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out[y * kOutputStride + x] = r;
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ref[y * kOutputStride + x] = r;
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}
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}
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const int kNumFilterBanks = sizeof(kTestFilterList) /
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sizeof(kTestFilterList[0]);
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for (int filter_bank = 0; filter_bank < kNumFilterBanks; ++filter_bank) {
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const int16_t (*filters)[8] = kTestFilterList[filter_bank];
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const int kNumFilters = 16;
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for (int filter_x = 0; filter_x < kNumFilters; ++filter_x) {
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for (int filter_y = 0; filter_y < kNumFilters; ++filter_y) {
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filter_average_block2d_8_c(in, kInputStride,
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filters[filter_x], filters[filter_y],
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ref, kOutputStride,
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Width(), Height());
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if (filters == vp9_sub_pel_filters_8lp || (filter_x && filter_y))
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REGISTER_STATE_CHECK(
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UUT_->hv8_avg_(in, kInputStride, out, kOutputStride,
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filters[filter_x], 16, filters[filter_y], 16,
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Width(), Height()));
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else if (filter_y)
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REGISTER_STATE_CHECK(
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UUT_->v8_avg_(in, kInputStride, out, kOutputStride,
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filters[filter_x], 16, filters[filter_y], 16,
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Width(), Height()));
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else
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REGISTER_STATE_CHECK(
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UUT_->h8_avg_(in, kInputStride, out, kOutputStride,
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filters[filter_x], 16, filters[filter_y], 16,
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Width(), Height()));
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CheckGuardBlocks();
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for (int y = 0; y < Height(); ++y)
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for (int x = 0; x < Width(); ++x)
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ASSERT_EQ(ref[y * kOutputStride + x], out[y * kOutputStride + x])
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<< "mismatch at (" << x << "," << y << "), "
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<< "filters (" << filter_bank << ","
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<< filter_x << "," << filter_y << ")";
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}
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}
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}
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}
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DECLARE_ALIGNED(256, const int16_t, kChangeFilters[16][8]) = {
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{ 0, 0, 0, 0, 0, 0, 0, 128},
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{ 0, 0, 0, 0, 0, 0, 128},
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{ 0, 0, 0, 0, 0, 128},
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{ 0, 0, 0, 0, 128},
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{ 0, 0, 0, 128},
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{ 0, 0, 128},
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{ 0, 128},
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{ 128},
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{ 0, 0, 0, 0, 0, 0, 0, 128},
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{ 0, 0, 0, 0, 0, 0, 128},
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{ 0, 0, 0, 0, 0, 128},
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{ 0, 0, 0, 0, 128},
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{ 0, 0, 0, 128},
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{ 0, 0, 128},
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{ 0, 128},
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{ 128}
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};
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TEST_P(ConvolveTest, ChangeFilterWorks) {
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uint8_t* const in = input();
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uint8_t* const out = output();
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const int kPixelSelected = 4;
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REGISTER_STATE_CHECK(UUT_->h8_(in, kInputStride, out, kOutputStride,
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kChangeFilters[8], 17, kChangeFilters[4], 16,
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Width(), Height()));
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|
|
|
for (int x = 0; x < Width(); ++x) {
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const int kQ4StepAdjust = x >> 4;
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const int kFilterPeriodAdjust = (x >> 3) << 3;
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const int ref_x = kQ4StepAdjust + kFilterPeriodAdjust + kPixelSelected;
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ASSERT_EQ(in[ref_x], out[x]) << "x == " << x;
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}
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|
|
|
REGISTER_STATE_CHECK(UUT_->v8_(in, kInputStride, out, kOutputStride,
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|
kChangeFilters[4], 16, kChangeFilters[8], 17,
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|
Width(), Height()));
|
|
|
|
for (int y = 0; y < Height(); ++y) {
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|
const int kQ4StepAdjust = y >> 4;
|
|
const int kFilterPeriodAdjust = (y >> 3) << 3;
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|
const int ref_y = kQ4StepAdjust + kFilterPeriodAdjust + kPixelSelected;
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|
ASSERT_EQ(in[ref_y * kInputStride], out[y * kInputStride]) << "y == " << y;
|
|
}
|
|
|
|
REGISTER_STATE_CHECK(UUT_->hv8_(in, kInputStride, out, kOutputStride,
|
|
kChangeFilters[8], 17, kChangeFilters[8], 17,
|
|
Width(), Height()));
|
|
|
|
for (int y = 0; y < Height(); ++y) {
|
|
const int kQ4StepAdjustY = y >> 4;
|
|
const int kFilterPeriodAdjustY = (y >> 3) << 3;
|
|
const int ref_y = kQ4StepAdjustY + kFilterPeriodAdjustY + kPixelSelected;
|
|
for (int x = 0; x < Width(); ++x) {
|
|
const int kQ4StepAdjustX = x >> 4;
|
|
const int kFilterPeriodAdjustX = (x >> 3) << 3;
|
|
const int ref_x = kQ4StepAdjustX + kFilterPeriodAdjustX + kPixelSelected;
|
|
|
|
ASSERT_EQ(in[ref_y * kInputStride + ref_x], out[y * kOutputStride + x])
|
|
<< "x == " << x << ", y == " << y;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
using std::tr1::make_tuple;
|
|
|
|
const ConvolveFunctions convolve8_c(
|
|
vp9_convolve8_horiz_c, vp9_convolve8_avg_horiz_c,
|
|
vp9_convolve8_vert_c, vp9_convolve8_avg_vert_c,
|
|
vp9_convolve8_c, vp9_convolve8_avg_c);
|
|
|
|
INSTANTIATE_TEST_CASE_P(C, ConvolveTest, ::testing::Values(
|
|
make_tuple(4, 4, &convolve8_c),
|
|
make_tuple(8, 4, &convolve8_c),
|
|
make_tuple(4, 8, &convolve8_c),
|
|
make_tuple(8, 8, &convolve8_c),
|
|
make_tuple(16, 8, &convolve8_c),
|
|
make_tuple(8, 16, &convolve8_c),
|
|
make_tuple(16, 16, &convolve8_c),
|
|
make_tuple(32, 16, &convolve8_c),
|
|
make_tuple(16, 32, &convolve8_c),
|
|
make_tuple(32, 32, &convolve8_c),
|
|
make_tuple(64, 32, &convolve8_c),
|
|
make_tuple(32, 64, &convolve8_c),
|
|
make_tuple(64, 64, &convolve8_c)));
|
|
|
|
#if HAVE_SSSE3
|
|
const ConvolveFunctions convolve8_ssse3(
|
|
vp9_convolve8_horiz_ssse3, vp9_convolve8_avg_horiz_c,
|
|
vp9_convolve8_vert_ssse3, vp9_convolve8_avg_vert_c,
|
|
vp9_convolve8_ssse3, vp9_convolve8_avg_c);
|
|
|
|
INSTANTIATE_TEST_CASE_P(SSSE3, ConvolveTest, ::testing::Values(
|
|
make_tuple(4, 4, &convolve8_ssse3),
|
|
make_tuple(8, 4, &convolve8_ssse3),
|
|
make_tuple(4, 8, &convolve8_ssse3),
|
|
make_tuple(8, 8, &convolve8_ssse3),
|
|
make_tuple(16, 8, &convolve8_ssse3),
|
|
make_tuple(8, 16, &convolve8_ssse3),
|
|
make_tuple(16, 16, &convolve8_ssse3),
|
|
make_tuple(32, 16, &convolve8_ssse3),
|
|
make_tuple(16, 32, &convolve8_ssse3),
|
|
make_tuple(32, 32, &convolve8_ssse3),
|
|
make_tuple(64, 32, &convolve8_ssse3),
|
|
make_tuple(32, 64, &convolve8_ssse3),
|
|
make_tuple(64, 64, &convolve8_ssse3)));
|
|
#endif
|
|
} // namespace
|