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swscale/tests/swscale: add option to force specific buffer alignment

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Useful to make sure the memcpy_in/out paths work as expected.

Signed-off-by: Niklas Haas <git@haasn.dev>
This commit is contained in:
Niklas Haas
2026-06-02 12:12:45 +02:00
parent bb5c461a47
commit a00db63da7
1 changed files with 31 additions and 1 deletions
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libswscale/tests/swscale.c
+31 -1
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@@ -58,6 +58,8 @@ struct options {
int flags;
int dither;
int unscaled;
int align_src;
int align_dst;
int legacy;
int pretty;
};
@@ -255,6 +257,12 @@ static int scale_new(AVFrame *dst, const AVFrame *src,
int64_t time = av_gettime_relative();
for (int i = 0; ret >= 0 && i < opts->iters; i++) {
unref_buffers(dst);
if (opts->align_dst) {
ret = av_frame_get_buffer(dst, opts->align_dst);
if (ret < 0)
return ret;
}
ret = checked_sws_scale_frame(sws_src_dst, dst, src);
}
*out_time = av_gettime_relative() - time;
@@ -287,7 +295,7 @@ static int scale_legacy(AVFrame *dst, const AVFrame *src,
dst->width = sws_legacy->dst_w;
dst->height = sws_legacy->dst_h;
dst->format = sws_legacy->dst_format;
ret = av_frame_get_buffer(dst, 0);
ret = av_frame_get_buffer(dst, opts->align_dst);
if (ret < 0)
goto error;
@@ -573,6 +581,12 @@ static int run_test(enum AVPixelFormat src_fmt, enum AVPixelFormat dst_fmt,
src->width = ref->width;
src->height = ref->height;
src->format = src_fmt;
if (opts->align_src) {
ret = av_frame_get_buffer(src, opts->align_src);
if (ret < 0)
goto error;
}
ret = checked_sws_scale_frame(sws_ref_src, src, ref);
if (ret < 0)
goto error;
@@ -900,6 +914,10 @@ static int parse_options(int argc, char **argv, struct options *opts, FILE **fp)
" Test with a specific dither mode\n"
" -unscaled <1 or 0>\n"
" If 1, test only conversions that do not involve scaling\n"
" -align_src <alignment>\n"
" If nonzero, allocate source buffers with a custom stride alignment\n"
" -align_dst <alignment>\n"
" If nonzero, allocate destination buffers with a custom stride alignment\n"
" -legacy <1 or 0>\n"
" If 1, force using legacy swscale for the main conversion\n"
" -hw <device>\n"
@@ -970,6 +988,18 @@ static int parse_options(int argc, char **argv, struct options *opts, FILE **fp)
opts->dither = atoi(argv[i + 1]);
} else if (!strcmp(argv[i], "-unscaled")) {
opts->unscaled = atoi(argv[i + 1]);
} else if (!strcmp(argv[i], "-align_src")) {
opts->align_src = atoi(argv[i + 1]);
if (opts->align_src < 0 || (opts->align_src & (opts->align_src - 1))) {
fprintf(stderr, "invalid alignment %s\n", argv[i + 1]);
return -1;
}
} else if (!strcmp(argv[i], "-align_dst")) {
opts->align_dst = atoi(argv[i + 1]);
if (opts->align_dst < 0 || (opts->align_dst & (opts->align_dst - 1))) {
fprintf(stderr, "invalid alignment %s\n", argv[i + 1]);
return -1;
}
} else if (!strcmp(argv[i], "-legacy")) {
opts->legacy = atoi(argv[i + 1]);
} else if (!strcmp(argv[i], "-hw")) {