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- /*
- * Copyright (c) 2016 Martin Storsjo
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with Libav; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
- #include <string.h>
- #include "checkasm.h"
- #include "libavcodec/avcodec.h"
- #include "libavcodec/h264dsp.h"
- #include "libavutil/common.h"
- #include "libavutil/internal.h"
- #include "libavutil/intreadwrite.h"
-
- static const uint32_t pixel_mask[3] = { 0xffffffff, 0x01ff01ff, 0x03ff03ff };
-
- #define SIZEOF_PIXEL ((bit_depth + 7) / 8)
- #define SIZEOF_COEF (2 * ((bit_depth + 7) / 8))
- #define PIXEL_STRIDE 16
-
- #define randomize_buffers() \
- do { \
- int x, y; \
- uint32_t mask = pixel_mask[bit_depth - 8]; \
- for (y = 0; y < sz; y++) { \
- for (x = 0; x < PIXEL_STRIDE; x += 4) { \
- AV_WN32A(src + y * PIXEL_STRIDE + x, rnd() & mask); \
- AV_WN32A(dst + y * PIXEL_STRIDE + x, rnd() & mask); \
- } \
- for (x = 0; x < sz; x++) { \
- if (bit_depth == 8) { \
- coef[y * sz + x] = src[y * PIXEL_STRIDE + x] - \
- dst[y * PIXEL_STRIDE + x]; \
- } else { \
- ((int32_t *)coef)[y * sz + x] = \
- ((uint16_t *)src)[y * (PIXEL_STRIDE/2) + x] - \
- ((uint16_t *)dst)[y * (PIXEL_STRIDE/2) + x]; \
- } \
- } \
- } \
- } while (0)
-
- #define dct4x4_impl(size, dctcoef) \
- static void dct4x4_##size(dctcoef *coef) \
- { \
- int i, y, x; \
- dctcoef tmp[16]; \
- for (i = 0; i < 4; i++) { \
- const int z0 = coef[i*4 + 0] + coef[i*4 + 3]; \
- const int z1 = coef[i*4 + 1] + coef[i*4 + 2]; \
- const int z2 = coef[i*4 + 0] - coef[i*4 + 3]; \
- const int z3 = coef[i*4 + 1] - coef[i*4 + 2]; \
- tmp[i + 4*0] = z0 + z1; \
- tmp[i + 4*1] = 2*z2 + z3; \
- tmp[i + 4*2] = z0 - z1; \
- tmp[i + 4*3] = z2 - 2*z3; \
- } \
- for (i = 0; i < 4; i++) { \
- const int z0 = tmp[i*4 + 0] + tmp[i*4 + 3]; \
- const int z1 = tmp[i*4 + 1] + tmp[i*4 + 2]; \
- const int z2 = tmp[i*4 + 0] - tmp[i*4 + 3]; \
- const int z3 = tmp[i*4 + 1] - tmp[i*4 + 2]; \
- coef[i*4 + 0] = z0 + z1; \
- coef[i*4 + 1] = 2*z2 + z3; \
- coef[i*4 + 2] = z0 - z1; \
- coef[i*4 + 3] = z2 - 2*z3; \
- } \
- for (y = 0; y < 4; y++) { \
- for (x = 0; x < 4; x++) { \
- static const int scale[] = { 13107 * 10, 8066 * 13, 5243 * 16 }; \
- const int idx = (y & 1) + (x & 1); \
- coef[y*4 + x] = (coef[y*4 + x] * scale[idx] + (1 << 14)) >> 15; \
- } \
- } \
- }
-
- #define DCT8_1D(src, srcstride, dst, dststride) do { \
- const int a0 = (src)[srcstride * 0] + (src)[srcstride * 7]; \
- const int a1 = (src)[srcstride * 0] - (src)[srcstride * 7]; \
- const int a2 = (src)[srcstride * 1] + (src)[srcstride * 6]; \
- const int a3 = (src)[srcstride * 1] - (src)[srcstride * 6]; \
- const int a4 = (src)[srcstride * 2] + (src)[srcstride * 5]; \
- const int a5 = (src)[srcstride * 2] - (src)[srcstride * 5]; \
- const int a6 = (src)[srcstride * 3] + (src)[srcstride * 4]; \
- const int a7 = (src)[srcstride * 3] - (src)[srcstride * 4]; \
- const int b0 = a0 + a6; \
- const int b1 = a2 + a4; \
- const int b2 = a0 - a6; \
- const int b3 = a2 - a4; \
- const int b4 = a3 + a5 + (a1 + (a1 >> 1)); \
- const int b5 = a1 - a7 - (a5 + (a5 >> 1)); \
- const int b6 = a1 + a7 - (a3 + (a3 >> 1)); \
- const int b7 = a3 - a5 + (a7 + (a7 >> 1)); \
- (dst)[dststride * 0] = b0 + b1; \
- (dst)[dststride * 1] = b4 + (b7 >> 2); \
- (dst)[dststride * 2] = b2 + (b3 >> 1); \
- (dst)[dststride * 3] = b5 + (b6 >> 2); \
- (dst)[dststride * 4] = b0 - b1; \
- (dst)[dststride * 5] = b6 - (b5 >> 2); \
- (dst)[dststride * 6] = (b2 >> 1) - b3; \
- (dst)[dststride * 7] = (b4 >> 2) - b7; \
- } while (0)
-
- #define dct8x8_impl(size, dctcoef) \
- static void dct8x8_##size(dctcoef *coef) \
- { \
- int i, x, y; \
- dctcoef tmp[64]; \
- for (i = 0; i < 8; i++) \
- DCT8_1D(coef + i, 8, tmp + i, 8); \
- \
- for (i = 0; i < 8; i++) \
- DCT8_1D(tmp + 8*i, 1, coef + i, 8); \
- \
- for (y = 0; y < 8; y++) { \
- for (x = 0; x < 8; x++) { \
- static const int scale[] = { \
- 13107 * 20, 11428 * 18, 20972 * 32, \
- 12222 * 19, 16777 * 25, 15481 * 24, \
- }; \
- static const int idxmap[] = { \
- 0, 3, 4, 3, \
- 3, 1, 5, 1, \
- 4, 5, 2, 5, \
- 3, 1, 5, 1, \
- }; \
- const int idx = idxmap[(y & 3) * 4 + (x & 3)]; \
- coef[y*8 + x] = ((int64_t)coef[y*8 + x] * \
- scale[idx] + (1 << 17)) >> 18; \
- } \
- } \
- }
-
- dct4x4_impl(16, int16_t)
- dct4x4_impl(32, int32_t)
-
- dct8x8_impl(16, int16_t)
- dct8x8_impl(32, int32_t)
-
- static void dct4x4(int16_t *coef, int bit_depth)
- {
- if (bit_depth == 8)
- dct4x4_16(coef);
- else
- dct4x4_32((int32_t *) coef);
- }
-
- static void dct8x8(int16_t *coef, int bit_depth)
- {
- if (bit_depth == 8) {
- dct8x8_16(coef);
- } else {
- dct8x8_32((int32_t *) coef);
- }
- }
-
-
- static void check_idct(void)
- {
- LOCAL_ALIGNED_16(uint8_t, src, [8 * 8 * 2]);
- LOCAL_ALIGNED_16(uint8_t, dst, [8 * 8 * 2]);
- LOCAL_ALIGNED_16(uint8_t, dst0, [8 * 8 * 2]);
- LOCAL_ALIGNED_16(uint8_t, dst1_base, [8 * 8 * 2 + 32]);
- LOCAL_ALIGNED_16(int16_t, coef, [8 * 8 * 2]);
- LOCAL_ALIGNED_16(int16_t, subcoef0, [8 * 8 * 2]);
- LOCAL_ALIGNED_16(int16_t, subcoef1, [8 * 8 * 2]);
- H264DSPContext h;
- int bit_depth, sz, align, dc;
- declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *dst, int16_t *block, int stride);
-
- for (bit_depth = 8; bit_depth <= 10; bit_depth++) {
- ff_h264dsp_init(&h, bit_depth, 1);
- for (sz = 4; sz <= 8; sz += 4) {
- randomize_buffers();
-
- if (sz == 4)
- dct4x4(coef, bit_depth);
- else
- dct8x8(coef, bit_depth);
-
- for (dc = 0; dc <= 1; dc++) {
- void (*idct)(uint8_t *, int16_t *, int) = NULL;
- switch ((sz << 1) | dc) {
- case (4 << 1) | 0: idct = h.h264_idct_add; break;
- case (4 << 1) | 1: idct = h.h264_idct_dc_add; break;
- case (8 << 1) | 0: idct = h.h264_idct8_add; break;
- case (8 << 1) | 1: idct = h.h264_idct8_dc_add; break;
- }
- if (check_func(idct, "h264_idct%d_add%s_%dbpp", sz, dc ? "_dc" : "", bit_depth)) {
- for (align = 0; align < 16; align += sz * SIZEOF_PIXEL) {
- uint8_t *dst1 = dst1_base + align;
- if (dc) {
- memset(subcoef0, 0, sz * sz * SIZEOF_COEF);
- memcpy(subcoef0, coef, SIZEOF_COEF);
- } else {
- memcpy(subcoef0, coef, sz * sz * SIZEOF_COEF);
- }
- memcpy(dst0, dst, sz * PIXEL_STRIDE);
- memcpy(dst1, dst, sz * PIXEL_STRIDE);
- memcpy(subcoef1, subcoef0, sz * sz * SIZEOF_COEF);
- call_ref(dst0, subcoef0, PIXEL_STRIDE);
- call_new(dst1, subcoef1, PIXEL_STRIDE);
- if (memcmp(dst0, dst1, sz * PIXEL_STRIDE) ||
- memcmp(subcoef0, subcoef1, sz * sz * SIZEOF_COEF))
- fail();
- bench_new(dst1, subcoef1, sz * SIZEOF_PIXEL);
- }
- }
- }
- }
- }
- report("idct");
- }
-
- void checkasm_check_h264dsp(void)
- {
- check_idct();
- }
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