[FFmpeg-cvslog] checkasm: Add tests for h264 idct
Martin Storsjö
git at videolan.org
Wed Jul 13 17:23:13 CEST 2016
ffmpeg | branch: master | Martin Storsjö <martin at martin.st> | Sat Jun 11 14:17:37 2016 +0300| [105998fb5ca3c343f5c8cb39ce3197f87a5e4d36] | committer: Martin Storsjö
checkasm: Add tests for h264 idct
The tests are inspired by similar tests for vp9 by
Ronald Bultje.
Signed-off-by: Martin Storsjö <martin at martin.st>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=105998fb5ca3c343f5c8cb39ce3197f87a5e4d36
---
tests/checkasm/Makefile | 1 +
tests/checkasm/checkasm.c | 3 +
tests/checkasm/checkasm.h | 1 +
tests/checkasm/h264dsp.c | 232 +++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 237 insertions(+)
diff --git a/tests/checkasm/Makefile b/tests/checkasm/Makefile
index 8a0cee5..3c23853 100644
--- a/tests/checkasm/Makefile
+++ b/tests/checkasm/Makefile
@@ -2,6 +2,7 @@
# subsystems
AVCODECOBJS-$(CONFIG_BSWAPDSP) += bswapdsp.o
AVCODECOBJS-$(CONFIG_FMTCONVERT) += fmtconvert.o
+AVCODECOBJS-$(CONFIG_H264DSP) += h264dsp.o
AVCODECOBJS-$(CONFIG_H264PRED) += h264pred.o
AVCODECOBJS-$(CONFIG_H264QPEL) += h264qpel.o
diff --git a/tests/checkasm/checkasm.c b/tests/checkasm/checkasm.c
index c75e431..15f9f68 100644
--- a/tests/checkasm/checkasm.c
+++ b/tests/checkasm/checkasm.c
@@ -74,6 +74,9 @@ static const struct {
#if CONFIG_FMTCONVERT
{ "fmtconvert", checkasm_check_fmtconvert },
#endif
+#if CONFIG_H264DSP
+ { "h264dsp", checkasm_check_h264dsp },
+#endif
#if CONFIG_H264PRED
{ "h264pred", checkasm_check_h264pred },
#endif
diff --git a/tests/checkasm/checkasm.h b/tests/checkasm/checkasm.h
index c7aa19c..619ebc7 100644
--- a/tests/checkasm/checkasm.h
+++ b/tests/checkasm/checkasm.h
@@ -33,6 +33,7 @@
void checkasm_check_bswapdsp(void);
void checkasm_check_dcadsp(void);
void checkasm_check_fmtconvert(void);
+void checkasm_check_h264dsp(void);
void checkasm_check_h264pred(void);
void checkasm_check_h264qpel(void);
void checkasm_check_hevc_mc(void);
diff --git a/tests/checkasm/h264dsp.c b/tests/checkasm/h264dsp.c
new file mode 100644
index 0000000..082c3d4
--- /dev/null
+++ b/tests/checkasm/h264dsp.c
@@ -0,0 +1,232 @@
+/*
+ * 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 { \
+ uint32_t mask = pixel_mask[bit_depth - 8]; \
+ for (y = 0; y < sz; y++) { \
+ for (x = 0; x < sz * SIZEOF_PIXEL; 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;
+ int x, y, 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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