From: Niklas Haas <g...@haasn.dev>
Because of the lack of an external ABI on low-level kernels, we cannot
directly test internal functions. Instead, we construct a minimal op chain
consisting of a read, the op to be tested, and a write.
The bigger complication arises from the fact that the backend may generate
arbitrary internal state that needs to be passed back to the implementation,
which means we cannot directly call `func_ref` on the generated chain. To get
around this, always compile the op chain twice - once using the backend to be
tested, and once using the reference C backend.
---
tests/checkasm/Makefile | 8 +-
tests/checkasm/checkasm.c | 1 +
tests/checkasm/checkasm.h | 1 +
tests/checkasm/sw_ops.c | 748 ++++++++++++++++++++++++++++++++++++++
4 files changed, 757 insertions(+), 1 deletion(-)
create mode 100644 tests/checkasm/sw_ops.c
diff --git a/tests/checkasm/Makefile b/tests/checkasm/Makefile
index d5c50e5599..be4c6b265f 100644
--- a/tests/checkasm/Makefile
+++ b/tests/checkasm/Makefile
@@ -65,7 +65,13 @@ AVFILTEROBJS-$(CONFIG_SOBEL_FILTER) += vf_convolution.o
CHECKASMOBJS-$(CONFIG_AVFILTER) += $(AVFILTEROBJS-yes)
# swscale tests
-SWSCALEOBJS += sw_gbrp.o sw_range_convert.o
sw_rgb.o sw_scale.o sw_yuv2rgb.o sw_yuv2yuv.o
+SWSCALEOBJS += sw_gbrp.o \
+ sw_ops.o \
+ sw_range_convert.o \
+ sw_rgb.o \
+ sw_scale.o \
+ sw_yuv2rgb.o \
+ sw_yuv2yuv.o
CHECKASMOBJS-$(CONFIG_SWSCALE) += $(SWSCALEOBJS)
diff --git a/tests/checkasm/checkasm.c b/tests/checkasm/checkasm.c
index 6e99d33d70..5f3a900bfd 100644
--- a/tests/checkasm/checkasm.c
+++ b/tests/checkasm/checkasm.c
@@ -294,6 +294,7 @@ static const struct {
{ "sw_scale", checkasm_check_sw_scale },
{ "sw_yuv2rgb", checkasm_check_sw_yuv2rgb },
{ "sw_yuv2yuv", checkasm_check_sw_yuv2yuv },
+ { "sw_ops", checkasm_check_sw_ops },
#endif
#if CONFIG_AVUTIL
{ "aes", checkasm_check_aes },
diff --git a/tests/checkasm/checkasm.h b/tests/checkasm/checkasm.h
index 0f8dea82e9..959e66d9f8 100644
--- a/tests/checkasm/checkasm.h
+++ b/tests/checkasm/checkasm.h
@@ -131,6 +131,7 @@ void checkasm_check_sw_rgb(void);
void checkasm_check_sw_scale(void);
void checkasm_check_sw_yuv2rgb(void);
void checkasm_check_sw_yuv2yuv(void);
+void checkasm_check_sw_ops(void);
void checkasm_check_takdsp(void);
void checkasm_check_utvideodsp(void);
void checkasm_check_v210dec(void);
diff --git a/tests/checkasm/sw_ops.c b/tests/checkasm/sw_ops.c
new file mode 100644
index 0000000000..7b38bd6902
--- /dev/null
+++ b/tests/checkasm/sw_ops.c
@@ -0,0 +1,748 @@
+/**
+ * Copyright (C) 2025 Niklas Haas
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <string.h>
+
+#include "libavutil/avassert.h"
+#include "libavutil/mem_internal.h"
+#include "libavutil/refstruct.h"
+
+#include "libswscale/ops.h"
+#include "libswscale/ops_internal.h"
+
+#include "checkasm.h"
+
+enum {
+ PIXELS = 64,
+};
+
+enum {
+ U8 = SWS_PIXEL_U8,
+ U16 = SWS_PIXEL_U16,
+ U32 = SWS_PIXEL_U32,
+ F32 = SWS_PIXEL_F32,
+};
+
+#define FMT(fmt, ...) tprintf((char[256]) {0}, 256, fmt, __VA_ARGS__)
+static const char *tprintf(char buf[], size_t size, const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ vsnprintf(buf, size, fmt, ap);
+ va_end(ap);
+ return buf;
+}
+
+static int rw_pixel_bits(const SwsOp *op)
+{
+ const int elems = op->rw.packed ? op->rw.elems : 1;
+ const int size = ff_sws_pixel_type_size(op->type);
+ const int bits = 8 >> op->rw.frac;
+ av_assert1(bits >= 1);
+ return elems * size * bits;
+}
+
+static float rndf(void)
+{
+ union { uint32_t u; float f; } x;
+ do {
+ x.u = rnd();
+ } while (!isnormal(x.f));
+ return x.f;
+}
+
+static void fill32f(float *line, int num, unsigned range)
+{
+ const float scale = (float) range / UINT32_MAX;
+ for (int i = 0; i < num; i++)
+ line[i] = range ? scale * rnd() : rndf();
+}
+
+static void fill32(uint32_t *line, int num, unsigned range)
+{
+ for (int i = 0; i < num; i++)
+ line[i] = range ? rnd() % (range + 1) : rnd();
+}
+
+static void fill16(uint16_t *line, int num, unsigned range)
+{
+ if (!range) {
+ fill32((uint32_t *) line, AV_CEIL_RSHIFT(num, 1), 0);
+ } else {
+ for (int i = 0; i < num; i++)
+ line[i] = rnd() % (range + 1);
+ }
+}
+
+static void fill8(uint8_t *line, int num, unsigned range)
+{
+ if (!range) {
+ fill32((uint32_t *) line, AV_CEIL_RSHIFT(num, 2), 0);
+ } else {
+ for (int i = 0; i < num; i++)
+ line[i] = rnd() % (range + 1);
+ }
+}
+
+static void check_ops(const char *report, unsigned range, const SwsOp *ops)
+{
+ SwsContext *ctx = sws_alloc_context();
+ SwsCompiledOp comp_ref = {0}, comp_new = {0};
+ SwsOpList oplist = { .ops = (SwsOp *) ops };
+ const SwsOp *read_op, *write_op;
+
+ declare_func(void, const SwsOpExec *exec, const void *priv, int pixels);
+
+ DECLARE_ALIGNED_64(char, src0)[4][PIXELS * sizeof(uint32_t[4])];
+ DECLARE_ALIGNED_64(char, src1)[4][PIXELS * sizeof(uint32_t[4])];
+ DECLARE_ALIGNED_64(char, dst0)[4][PIXELS * sizeof(uint32_t[4])];
+ DECLARE_ALIGNED_64(char, dst1)[4][PIXELS * sizeof(uint32_t[4])];
+
+ if (!ctx)
+ return;
+ ctx->flags = SWS_BITEXACT;
+
+ read_op = &ops[0];
+ for (oplist.num_ops = 0; ops[oplist.num_ops].op; oplist.num_ops++)
+ write_op = &ops[oplist.num_ops];
+
+ for (int p = 0; p < 4; p++) {
+ void *plane = src0[p];
+ switch (read_op->type) {
+ case U8: fill8(plane, sizeof(src0[p]) / sizeof(uint8_t), range);
break;
+ case U16: fill16(plane, sizeof(src0[p]) / sizeof(uint16_t), range);
break;
+ case U32: fill32(plane, sizeof(src0[p]) / sizeof(uint32_t), range);
break;
+ case F32: fill32f(plane, sizeof(src0[p]) / sizeof(uint32_t), range);
break;
+ }
+ }
+
+ memcpy(src1, src0, sizeof(src0));
+ memset(dst0, 0, sizeof(dst0));
+ memset(dst1, 0, sizeof(dst1));
+
+ /* Compile `ops` using both the asm and c backends */
+ for (int n = 0; ff_sws_op_backends[n]; n++) {
+ const SwsOpBackend *backend = ff_sws_op_backends[n];
+ const bool is_ref = !strcmp(backend->name, "c");
+ if (is_ref || !comp_new.func) {
+ SwsCompiledOp comp;
+ int ret = ff_sws_ops_compile_backend(ctx, backend, &oplist, &comp);
+ if (ret == AVERROR(ENOTSUP))
+ continue;
+ else if (ret < 0)
+ fail();
+ else if (PIXELS % comp.block_size != 0)
+ fail();
+
+ if (is_ref)
+ comp_ref = comp;
+ if (!comp_new.func)
+ comp_new = comp;
+ }
+ }
+
+ av_assert0(comp_ref.func && comp_new.func);
+
+ SwsOpExec exec = {0};
+ exec.pixel_bits_in = rw_pixel_bits(read_op);
+ exec.pixel_bits_out = rw_pixel_bits(write_op);
+ exec.width = PIXELS;
+ exec.height = exec.slice_h = 1;
+ for (int i = 0; i < 4; i++) {
+ exec.in_stride[i] = sizeof(src0[i]);
+ exec.out_stride[i] = sizeof(dst0[i]);
+ }
+
+ if (check_func(comp_new.func, "%s", report)) {
+ func_ref = comp_ref.func; /* ignore any other asm versions */
+
+ for (int i = 0; i < 4; i++) {
+ exec.in[i] = (void *) src0[i];
+ exec.out[i] = (void *) dst0[i];
+ }
+ call_ref(&exec, comp_ref.priv, PIXELS / comp_ref.block_size);
+
+ for (int i = 0; i < 4; i++) {
+ exec.in[i] = (void *) src1[i];
+ exec.out[i] = (void *) dst1[i];
+ }
+ call_new(&exec, comp_new.priv, PIXELS / comp_new.block_size);
+
+ for (int i = 0; i < 4; i++) {
+ const char *name = FMT("%s[%d]", report, i);
+ const int size = PIXELS * exec.pixel_bits_out >> 3;
+ const int stride = sizeof(dst0[i]);
+
+ switch (write_op->type) {
+ case U8:
+ checkasm_check(uint8_t, (void *) dst0[i], stride,
+ (void *) dst1[i], stride,
+ size, 1, name);
+ break;
+ case U16:
+ checkasm_check(uint16_t, (void *) dst0[i], stride,
+ (void *) dst1[i], stride,
+ size >> 1, 1, name);
+ break;
+ case U32:
+ checkasm_check(uint32_t, (void *) dst0[i], stride,
+ (void *) dst1[i], stride,
+ size >> 2, 1, name);
+ break;
+ case F32:
+ checkasm_check(float, (void *) dst0[i], stride,
+ (void *) dst1[i], stride,
+ size >> 2, 1, name);
+ break;
+ }
+
+ /* Check for over-write */
+ for (int x = size + comp_new.over_write; x < sizeof(dst1[i]); x++)
{
+ if (dst1[i][x] != 0) {
+ fprintf(stderr, "Overwrite detected in %s: [%d] =
0x%02x\n",
+ name, x, dst1[i][x]);
+ fail();
+ }
+ }
+
+ if (write_op->rw.packed)
+ break;
+ }
+
+ bench_new(&exec, comp_new.priv, PIXELS / comp_new.block_size);
+ }
+
+ if (comp_new.func != comp_ref.func && comp_new.free)
+ comp_new.free(comp_new.priv);
+ if (comp_ref.free)
+ comp_ref.free(comp_ref.priv);
+ sws_free_context(&ctx);
+}
+
+#define CHECK_RANGE(NAME, RANGE, N_IN, N_OUT, IN, OUT, ...)
\
+ do {
\
+ check_ops(NAME, RANGE, (SwsOp[]) {
\
+ {
\
+ .op = SWS_OP_READ,
\
+ .type = IN,
\
+ .rw.elems = N_IN,
\
+ },
\
+ __VA_ARGS__,
\
+ {
\
+ .op = SWS_OP_WRITE,
\
+ .type = OUT,
\
+ .rw.elems = N_OUT,
\
+ }, {0}
\
+ });
\
+ } while (0)
+
+#define CHECK_COMMON_RANGE(NAME, RANGE, IN, OUT, ...)
\
+ CHECK_RANGE(FMT("%s_p1000", NAME), RANGE, 1, 1, IN, OUT, __VA_ARGS__);
\
+ CHECK_RANGE(FMT("%s_p1110", NAME), RANGE, 3, 3, IN, OUT, __VA_ARGS__);
\
+ CHECK_RANGE(FMT("%s_p1111", NAME), RANGE, 4, 4, IN, OUT, __VA_ARGS__);
\
+ CHECK_RANGE(FMT("%s_p1001", NAME), RANGE, 4, 2, IN, OUT, __VA_ARGS__, {
\
+ .op = SWS_OP_SWIZZLE,
\
+ .type = OUT,
\
+ .swizzle = SWS_SWIZZLE(0, 3, 1, 2),
\
+ })
+
+#define CHECK(NAME, N_IN, N_OUT, IN, OUT, ...) \
+ CHECK_RANGE(NAME, 0, N_IN, N_OUT, IN, OUT, __VA_ARGS__)
+
+#define CHECK_COMMON(NAME, IN, OUT, ...) \
+ CHECK_COMMON_RANGE(NAME, 0, IN, OUT, __VA_ARGS__)
+
+static void check_read_write(void)
+{
+ for (SwsPixelType t = U8; t < SWS_PIXEL_TYPE_NB; t++) {
+ const char *type = ff_sws_pixel_type_name(t);
+ for (int i = 1; i <= 4; i++) {
+ /* Test N->N planar read/write */
+ for (int o = 1; o <= i; o++) {
+ check_ops(FMT("rw_%d_%d_%s", i, o, type), 0, (SwsOp[]) {
+ {
+ .op = SWS_OP_READ,
+ .type = t,
+ .rw.elems = i,
+ }, {
+ .op = SWS_OP_WRITE,
+ .type = t,
+ .rw.elems = o,
+ }, {0}
+ });
+ }
+
+ /* Test packed read/write */
+ if (i == 1)
+ continue;
+
+ check_ops(FMT("read_packed%d_%s", i, type), 0, (SwsOp[]) {
+ {
+ .op = SWS_OP_READ,
+ .type = t,
+ .rw.elems = i,
+ .rw.packed = true,
+ }, {
+ .op = SWS_OP_WRITE,
+ .type = t,
+ .rw.elems = i,
+ }, {0}
+ });
+
+ check_ops(FMT("write_packed%d_%s", i, type), 0, (SwsOp[]) {
+ {
+ .op = SWS_OP_READ,
+ .type = t,
+ .rw.elems = i,
+ }, {
+ .op = SWS_OP_WRITE,
+ .type = t,
+ .rw.elems = i,
+ .rw.packed = true,
+ }, {0}
+ });
+ }
+ }
+
+ /* Test fractional reads/writes */
+ for (int frac = 1; frac <= 3; frac++) {
+ const int bits = 8 >> frac;
+ const int range = (1 << bits) - 1;
+ if (bits == 2)
+ continue; /* no 2 bit packed formats currently exist */
+
+ check_ops(FMT("read_frac%d", frac), 0, (SwsOp[]) {
+ {
+ .op = SWS_OP_READ,
+ .type = U8,
+ .rw.elems = 1,
+ .rw.frac = frac,
+ }, {
+ .op = SWS_OP_WRITE,
+ .type = U8,
+ .rw.elems = 1,
+ }, {0}
+ });
+
+ check_ops(FMT("write_frac%d", frac), range, (SwsOp[]) {
+ {
+ .op = SWS_OP_READ,
+ .type = U8,
+ .rw.elems = 1,
+ }, {
+ .op = SWS_OP_WRITE,
+ .type = U8,
+ .rw.elems = 1,
+ .rw.frac = frac,
+ }, {0}
+ });
+ }
+}
+
+static void check_swap_bytes(void)
+{
+ CHECK_COMMON("swap_bytes_16", U16, U16, {
+ .op = SWS_OP_SWAP_BYTES,
+ .type = U16,
+ });
+
+ CHECK_COMMON("swap_bytes_32", U32, U32, {
+ .op = SWS_OP_SWAP_BYTES,
+ .type = U32,
+ });
+}
+
+static void check_pack_unpack(void)
+{
+ const struct {
+ SwsPixelType type;
+ SwsPackOp op;
+ } patterns[] = {
+ { U8, {{ 3, 3, 2 }}},
+ { U8, {{ 2, 3, 3 }}},
+ { U8, {{ 1, 2, 1 }}},
+ {U16, {{ 5, 6, 5 }}},
+ {U16, {{ 5, 5, 5 }}},
+ {U16, {{ 4, 4, 4 }}},
+ {U32, {{ 2, 10, 10, 10 }}},
+ {U32, {{10, 10, 10, 2 }}},
+ };
+
+ for (int i = 0; i < FF_ARRAY_ELEMS(patterns); i++) {
+ const SwsPixelType type = patterns[i].type;
+ const SwsPackOp pack = patterns[i].op;
+ const int num = pack.pattern[3] ? 4 : 3;
+ const char *pat = FMT("%d%d%d%d", pack.pattern[0], pack.pattern[1],
+ pack.pattern[2], pack.pattern[3]);
+
+ CHECK(FMT("pack_%s", pat), num, 1, type, type, {
+ .op = SWS_OP_PACK,
+ .type = type,
+ .pack = pack,
+ });
+
+ CHECK(FMT("unpack_%s", pat), 1, num, type, type, {
+ .op = SWS_OP_UNPACK,
+ .type = type,
+ .pack = pack,
+ });
+ }
+}
+
+static AVRational rndq(SwsPixelType t)
+{
+ const unsigned num = rnd();
+ if (ff_sws_pixel_type_is_int(t)) {
+ const unsigned mask = (1 << (ff_sws_pixel_type_size(t) * 8)) - 1;
+ return (AVRational) { num & mask, 1 };
+ } else {
+ const unsigned den = rnd();
+ return (AVRational) { num, den ? den : 1 };
+ }
+}
+
+static void check_clear(void)
+{
+ for (SwsPixelType t = U8; t < SWS_PIXEL_TYPE_NB; t++) {
+ const char *type = ff_sws_pixel_type_name(t);
+ const int bits = ff_sws_pixel_type_size(t) * 8;
+
+ /* TODO: AVRational can't fit 32 bit constants */
+ if (bits < 32) {
+ const AVRational chroma = (AVRational) { 1 << (bits - 1), 1};
+ const AVRational alpha = (AVRational) { (1 << bits) - 1, 1};
+ const AVRational zero = (AVRational) { 0, 1};
+ const AVRational none = {0};
+
+ const SwsConst patterns[] = {
+ /* Zero only */
+ {.q4 = { none, none, none, zero }},
+ {.q4 = { zero, none, none, none }},
+ /* Alpha only */
+ {.q4 = { none, none, none, alpha }},
+ {.q4 = { alpha, none, none, none }},
+ /* Chroma only */
+ {.q4 = { chroma, chroma, none, none }},
+ {.q4 = { none, chroma, chroma, none }},
+ {.q4 = { none, none, chroma, chroma }},
+ {.q4 = { chroma, none, chroma, none }},
+ {.q4 = { none, chroma, none, chroma }},
+ /* Alpha+chroma */
+ {.q4 = { chroma, chroma, none, alpha }},
+ {.q4 = { none, chroma, chroma, alpha }},
+ {.q4 = { alpha, none, chroma, chroma }},
+ {.q4 = { chroma, none, chroma, alpha }},
+ {.q4 = { alpha, chroma, none, chroma }},
+ /* Random values */
+ {.q4 = { none, rndq(t), rndq(t), rndq(t) }},
+ {.q4 = { none, rndq(t), rndq(t), rndq(t) }},
+ {.q4 = { none, rndq(t), rndq(t), rndq(t) }},
+ {.q4 = { none, rndq(t), rndq(t), rndq(t) }},
+ };
+
+ for (int i = 0; i < FF_ARRAY_ELEMS(patterns); i++) {
+ CHECK(FMT("clear_pattern_%s[%d]", type, i), 4, 4, t, t, {
+ .op = SWS_OP_CLEAR,
+ .type = t,
+ .c = patterns[i],
+ });
+ }
+ } else if (!ff_sws_pixel_type_is_int(t)) {
+ /* Floating point YUV doesn't exist, only alpha needs to be
cleared */
+ CHECK(FMT("clear_alpha_%s", type), 4, 4, t, t, {
+ .op = SWS_OP_CLEAR,
+ .type = t,
+ .c.q4[3] = { 0, 1 },
+ });
+ }
+ }
+}
+
+static void check_shift(void)
+{
+ for (SwsPixelType t = U16; t < SWS_PIXEL_TYPE_NB; t++) {
+ const char *type = ff_sws_pixel_type_name(t);
+ if (!ff_sws_pixel_type_is_int(t))
+ continue;
+
+ for (int shift = 1; shift <= 8; shift++) {
+ CHECK_COMMON(FMT("lshift%d_%s", shift, type), t, t, {
+ .op = SWS_OP_LSHIFT,
+ .type = t,
+ .c.u = shift,
+ });
+
+ CHECK_COMMON(FMT("rshift%d_%s", shift, type), t, t, {
+ .op = SWS_OP_RSHIFT,
+ .type = t,
+ .c.u = shift,
+ });
+ }
+ }
+}
+
+static void check_swizzle(void)
+{
+ for (SwsPixelType t = U8; t < SWS_PIXEL_TYPE_NB; t++) {
+ const char *type = ff_sws_pixel_type_name(t);
+ static const int patterns[][4] = {
+ /* Pure swizzle */
+ {3, 0, 1, 2},
+ {3, 0, 2, 1},
+ {2, 1, 0, 3},
+ {3, 2, 1, 0},
+ {3, 1, 0, 2},
+ {3, 2, 0, 1},
+ {1, 2, 0, 3},
+ {1, 0, 2, 3},
+ {2, 0, 1, 3},
+ {2, 3, 1, 0},
+ {2, 1, 3, 0},
+ {1, 2, 3, 0},
+ {1, 3, 2, 0},
+ {0, 2, 1, 3},
+ {0, 2, 3, 1},
+ {0, 3, 1, 2},
+ {3, 1, 2, 0},
+ {0, 3, 2, 1},
+ /* Luma expansion */
+ {0, 0, 0, 3},
+ {3, 0, 0, 0},
+ {0, 0, 0, 1},
+ {1, 0, 0, 0},
+ };
+
+ for (int i = 0; i < FF_ARRAY_ELEMS(patterns); i++) {
+ const int x = patterns[i][0], y = patterns[i][1],
+ z = patterns[i][2], w = patterns[i][3];
+ CHECK(FMT("swizzle_%d%d%d%d_%s", x, y, z, w, type), 4, 4, t, t, {
+ .op = SWS_OP_SWIZZLE,
+ .type = t,
+ .swizzle = SWS_SWIZZLE(x, y, z, w),
+ });
+ }
+ }
+}
+
+static void check_convert(void)
+{
+ for (SwsPixelType i = U8; i < SWS_PIXEL_TYPE_NB; i++) {
+ const char *itype = ff_sws_pixel_type_name(i);
+ const int isize = ff_sws_pixel_type_size(i);
+ for (SwsPixelType o = U8; o < SWS_PIXEL_TYPE_NB; o++) {
+ const char *otype = ff_sws_pixel_type_name(o);
+ const int osize = ff_sws_pixel_type_size(o);
+ const char *name = FMT("convert_%s_%s", itype, otype);
+ if (i == o)
+ continue;
+
+ if (isize < osize || !ff_sws_pixel_type_is_int(o)) {
+ CHECK_COMMON(name, i, o, {
+ .op = SWS_OP_CONVERT,
+ .type = i,
+ .convert.to = o,
+ });
+ } else if (isize > osize || !ff_sws_pixel_type_is_int(i)) {
+ uint32_t range = (1 << osize * 8) - 1;
+ CHECK_COMMON_RANGE(name, range, i, o, {
+ .op = SWS_OP_CONVERT,
+ .type = i,
+ .convert.to = o,
+ });
+ }
+ }
+ }
+
+ /* Check expanding conversions */
+ CHECK_COMMON("expand16", U8, U16, {
+ .op = SWS_OP_CONVERT,
+ .type = U8,
+ .convert.to = U16,
+ .convert.expand = true,
+ });
+
+ CHECK_COMMON("expand32", U8, U32, {
+ .op = SWS_OP_CONVERT,
+ .type = U8,
+ .convert.to = U32,
+ .convert.expand = true,
+ });
+}
+
+static void check_dither(void)
+{
+ for (SwsPixelType t = F32; t < SWS_PIXEL_TYPE_NB; t++) {
+ const char *type = ff_sws_pixel_type_name(t);
+ if (ff_sws_pixel_type_is_int(t))
+ continue;
+
+ /* Test all sizes up to 16x16 */
+ for (int size_log2 = 0; size_log2 <= 4; size_log2++) {
+ const int size = 1 << size_log2;
+ AVRational *matrix = av_refstruct_allocz(size * size *
sizeof(*matrix));
+ if (!matrix) {
+ fail();
+ return;
+ }
+
+ if (size == 1) {
+ matrix[0] = (AVRational) { 1, 2 };
+ } else {
+ for (int i = 0; i < size * size; i++)
+ matrix[i] = rndq(t);
+ }
+
+ CHECK_COMMON(FMT("dither_%dx%d_%s", size, size, type), t, t, {
+ .op = SWS_OP_DITHER,
+ .type = t,
+ .dither.size_log2 = size_log2,
+ .dither.matrix = matrix,
+ });
+
+ av_refstruct_unref(&matrix);
+ }
+ }
+}
+
+static void check_min_max(void)
+{
+ for (SwsPixelType t = U8; t < SWS_PIXEL_TYPE_NB; t++) {
+ const char *type = ff_sws_pixel_type_name(t);
+ CHECK_COMMON(FMT("min_%s", type), t, t, {
+ .op = SWS_OP_MIN,
+ .type = t,
+ .c.q4 = { rndq(t), rndq(t), rndq(t), rndq(t) },
+ });
+
+ CHECK_COMMON(FMT("max_%s", type), t, t, {
+ .op = SWS_OP_MAX,
+ .type = t,
+ .c.q4 = { rndq(t), rndq(t), rndq(t), rndq(t) },
+ });
+ }
+}
+
+static void check_linear(void)
+{
+ static const struct {
+ const char *name;
+ uint32_t mask;
+ } patterns[] = {
+ { "noop", 0 },
+ { "luma", SWS_MASK_LUMA },
+ { "alpha", SWS_MASK_ALPHA },
+ { "luma+alpha", SWS_MASK_LUMA | SWS_MASK_ALPHA },
+ { "dot3", 0b111 },
+ { "dot4", 0b1111 },
+ { "row0", SWS_MASK_ROW(0) },
+ { "row0+alpha", SWS_MASK_ROW(0) | SWS_MASK_ALPHA },
+ { "off3", SWS_MASK_OFF3 },
+ { "off3+alpha", SWS_MASK_OFF3 | SWS_MASK_ALPHA },
+ { "diag3", SWS_MASK_DIAG3 },
+ { "diag4", SWS_MASK_DIAG4 },
+ { "diag3+alpha", SWS_MASK_DIAG3 | SWS_MASK_ALPHA },
+ { "diag3+off3", SWS_MASK_DIAG3 | SWS_MASK_OFF3 },
+ { "diag3+off3+alpha", SWS_MASK_DIAG3 | SWS_MASK_OFF3 |
SWS_MASK_ALPHA },
+ { "diag4+off4", SWS_MASK_DIAG4 | SWS_MASK_OFF4 },
+ { "matrix3", SWS_MASK_MAT3 },
+ { "matrix3+off3", SWS_MASK_MAT3 | SWS_MASK_OFF3 },
+ { "matrix3+off3+alpha", SWS_MASK_MAT3 | SWS_MASK_OFF3 | SWS_MASK_ALPHA
},
+ { "matrix4", SWS_MASK_MAT4 },
+ { "matrix4+off4", SWS_MASK_MAT4 | SWS_MASK_OFF4 },
+ };
+
+ for (SwsPixelType t = F32; t < SWS_PIXEL_TYPE_NB; t++) {
+ const char *type = ff_sws_pixel_type_name(t);
+ if (ff_sws_pixel_type_is_int(t))
+ continue;
+
+ for (int p = 0; p < FF_ARRAY_ELEMS(patterns); p++) {
+ const uint32_t mask = patterns[p].mask;
+ SwsLinearOp lin = { .mask = mask };
+
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 5; j++) {
+ if (mask & SWS_MASK(i, j)) {
+ lin.m[i][j] = rndq(t);
+ } else {
+ lin.m[i][j] = (AVRational) { i == j, 1 };
+ }
+ }
+ }
+
+ CHECK(FMT("linear_%s_%s", patterns[p].name, type), 4, 4, t, t, {
+ .op = SWS_OP_LINEAR,
+ .type = t,
+ .lin = lin,
+ });
+ }
+ }
+}
+
+static void check_scale(void)
+{
+ for (SwsPixelType t = F32; t < SWS_PIXEL_TYPE_NB; t++) {
+ const char *type = ff_sws_pixel_type_name(t);
+ const int bits = ff_sws_pixel_type_size(t) * 8;
+ if (ff_sws_pixel_type_is_int(t)) {
+ /* Ensure the result won't exceed the value range */
+ const unsigned max = (1 << bits) - 1;
+ const unsigned scale = rnd() & max;
+ const unsigned range = max / (scale ? scale : 1);
+ CHECK_COMMON_RANGE(FMT("scale_%s", type), range, t, t, {
+ .op = SWS_OP_SCALE,
+ .type = t,
+ .c.q = { scale, 1 },
+ });
+ } else {
+ CHECK_COMMON(FMT("scale_%s", type), t, t, {
+ .op = SWS_OP_SCALE,
+ .type = t,
+ .c.q = rndq(t),
+ });
+ }
+ }
+}
+
+void checkasm_check_sw_ops(void)
+{
+ check_read_write();
+ report("read_write");
+ check_swap_bytes();
+ report("swap_bytes");
+ check_pack_unpack();
+ report("pack_unpack");
+ check_clear();
+ report("clear");
+ check_shift();
+ report("shift");
+ check_swizzle();
+ report("swizzle");
+ check_convert();
+ report("convert");
+ check_dither();
+ report("dither");
+ check_min_max();
+ report("min_max");
+ check_linear();
+ report("linear");
+ check_scale();
+ report("scale");
+}
--
2.49.0
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