1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
#include <libavcodec/avcodec.h>
#include "scale_test.h"
#include "video/image_writer.h"
#include "video/sws_utils.h"
static struct mp_image *gen_repack_test_img(int w, int h, int bytes, bool rgb,
bool alpha)
{
struct mp_regular_imgfmt planar_desc = {
.component_type = MP_COMPONENT_TYPE_UINT,
.component_size = bytes,
.forced_csp = rgb ? MP_CSP_RGB : 0,
.num_planes = alpha ? 4 : 3,
.planes = {
{1, {rgb ? 2 : 1}},
{1, {rgb ? 3 : 2}},
{1, {rgb ? 1 : 3}},
{1, {4}},
},
};
int mpfmt = mp_find_regular_imgfmt(&planar_desc);
assert(mpfmt);
struct mp_image *mpi = mp_image_alloc(mpfmt, w, h);
assert(mpi);
// Well, I have no idea what makes a good test image. So here's some crap.
// This contains bars/tiles of solid colors. For each of R/G/B, it toggles
// though 0/100% range, so 2*2*2 = 8 combinations (16 with alpha).
int b_h = 16, b_w = 16;
for (int y = 0; y < h; y++) {
for (int p = 0; p < mpi->num_planes; p++) {
void *line = mpi->planes[p] + mpi->stride[p] * (ptrdiff_t)y;
for (int x = 0; x < w; x += b_w) {
unsigned i = x / b_w + y / b_h * 2;
int c = ((i >> p) & 1);
if (bytes == 1) {
c *= (1 << 8) - 1;
for (int xs = x; xs < x + b_w; xs++)
((uint8_t *)line)[xs] = c;
} else if (bytes == 2) {
c *= (1 << 16) - 1;
for (int xs = x; xs < x + b_w; xs++)
((uint16_t *)line)[xs] = c;
}
}
}
}
return mpi;
}
static void dump_image(struct scale_test *stest, const char *name,
struct mp_image *img)
{
char *path = mp_tprintf(4096, "%s/%s.png", stest->outdir, name);
struct image_writer_opts opts = image_writer_opts_defaults;
opts.format = AV_CODEC_ID_PNG;
if (!write_image(img, &opts, path, NULL, NULL)) {
printf("Failed to write '%s'.\n", path);
abort();
}
}
// Compare 2 images (same format and size) for exact pixel data match.
// Does generally not work with formats that include undefined padding.
// Does not work with non-byte aligned formats.
static void assert_imgs_equal(struct scale_test *stest, FILE *f,
struct mp_image *ref, struct mp_image *new)
{
assert(ref->imgfmt == new->imgfmt);
assert(ref->w == new->w);
assert(ref->h == new->h);
assert(ref->fmt.flags & MP_IMGFLAG_BYTE_ALIGNED);
assert(ref->fmt.bpp[0]);
for (int p = 0; p < ref->num_planes; p++) {
for (int y = 0; y < ref->h; y++) {
void *line_r = ref->planes[p] + ref->stride[p] * (ptrdiff_t)y;
void *line_o = new->planes[p] + new->stride[p] * (ptrdiff_t)y;
size_t size = mp_image_plane_bytes(ref, p, 0, new->w);
bool ok = memcmp(line_r, line_o, size) == 0;
if (!ok) {
stest->fail += 1;
char *fn_a = mp_tprintf(80, "img%d_ref", stest->fail);
char *fn_b = mp_tprintf(80, "img%d_new", stest->fail);
fprintf(f, "Images mismatching, dumping to %s/%s\n", fn_a, fn_b);
dump_image(stest, fn_a, ref);
dump_image(stest, fn_b, new);
return;
}
}
}
}
void repack_test_run(struct scale_test *stest)
{
char *logname = mp_tprintf(80, "%s.log", stest->test_name);
FILE *f = test_open_out(stest->outdir, logname);
if (!stest->sws) {
init_imgfmts_list();
stest->sws = mp_sws_alloc(stest);
stest->img_repack_rgb8 = gen_repack_test_img(256, 128, 1, true, false);
stest->img_repack_rgba8 = gen_repack_test_img(256, 128, 1, true, true);
stest->img_repack_rgb16 = gen_repack_test_img(256, 128, 2, true, false);
stest->img_repack_rgba16 = gen_repack_test_img(256, 128, 2, true, true);
talloc_steal(stest, stest->img_repack_rgb8);
talloc_steal(stest, stest->img_repack_rgba8);
talloc_steal(stest, stest->img_repack_rgb16);
talloc_steal(stest, stest->img_repack_rgba16);
}
for (int a = 0; a < num_imgfmts; a++) {
int mpfmt = imgfmts[a];
struct mp_imgfmt_desc fmtdesc = mp_imgfmt_get_desc(mpfmt);
struct mp_regular_imgfmt rdesc;
if (!mp_get_regular_imgfmt(&rdesc, mpfmt)) {
int ofmt = mp_find_other_endian(mpfmt);
if (!mp_get_regular_imgfmt(&rdesc, ofmt))
continue;
}
if (rdesc.num_planes > 1 || rdesc.forced_csp != MP_CSP_RGB)
continue;
struct mp_image *test_img = NULL;
bool alpha = fmtdesc.flags & MP_IMGFLAG_ALPHA;
bool hidepth = rdesc.component_size > 1;
if (alpha) {
test_img = hidepth ? stest->img_repack_rgba16 : stest->img_repack_rgba8;
} else {
test_img = hidepth ? stest->img_repack_rgb16 : stest->img_repack_rgb8;
}
if (test_img->imgfmt == mpfmt)
continue;
if (!stest->fns->supports_fmts(stest->fns_priv, mpfmt, test_img->imgfmt))
continue;
if (!mp_sws_supports_formats(stest->sws, mpfmt, test_img->imgfmt))
continue;
fprintf(f, "%s using %s\n", mp_imgfmt_to_name(mpfmt),
mp_imgfmt_to_name(test_img->imgfmt));
struct mp_image *dst = mp_image_alloc(mpfmt, test_img->w, test_img->h);
assert(dst);
// This tests packing.
bool ok = stest->fns->scale(stest->fns_priv, dst, test_img);
assert(ok);
// Cross-check with swscale in the other direction.
// (Mostly so we don't have to worry about padding.)
struct mp_image *src2 =
mp_image_alloc(test_img->imgfmt, test_img->w, test_img->h);
assert(src2);
ok = mp_sws_scale(stest->sws, src2, dst) >= 0;
assert_imgs_equal(stest, f, test_img, src2);
// Assume the other conversion direction also works.
assert(stest->fns->supports_fmts(stest->fns_priv, test_img->imgfmt, mpfmt));
struct mp_image *back = mp_image_alloc(test_img->imgfmt, dst->w, dst->h);
assert(back);
// This tests unpacking.
ok = stest->fns->scale(stest->fns_priv, back, dst);
assert(ok);
assert_imgs_equal(stest, f, test_img, back);
talloc_free(back);
talloc_free(src2);
talloc_free(dst);
}
fclose(f);
assert_text_files_equal(stest->refdir, stest->outdir, logname,
"This can fail if FFmpeg adds or removes pixfmts.");
}
|
