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1 /*
2  * Copyright (c) 2019, Alliance for Open Media. All rights reserved.
3  *
4  * This source code is subject to the terms of the BSD 2 Clause License and
5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6  * was not distributed with this source code in the LICENSE file, you can
7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8  * Media Patent License 1.0 was not distributed with this source code in the
9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10  */
11 
12 #include "gtest/gtest.h"
13 
14 #include <cstring>
15 #include <string>
16 
17 #include "config/aom_config.h"
18 
19 #include "aom/aom_codec.h"
20 #include "aom/aom_image.h"
21 #include "aom/aomcx.h"
22 #include "aom/internal/aom_image_internal.h"
23 #include "aom_scale/yv12config.h"
24 #include "test/codec_factory.h"
25 #include "test/encode_test_driver.h"
26 #include "test/i420_video_source.h"
27 #include "test/util.h"
28 #include "test/video_source.h"
29 
30 namespace {
31 const size_t kMetadataPayloadSizeT35 = 24;
32 // 0xB5 stands for the itut t35 metadata country code for the Unites States
33 const uint8_t kMetadataPayloadT35[kMetadataPayloadSizeT35] = {
34   0xB5, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
35   0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17
36 };
37 
38 const size_t kMetadataPayloadSizeMdcv = 24;
39 // Arbitrary content.
40 const uint8_t kMetadataPayloadMdcv[kMetadataPayloadSizeMdcv] = {
41   0x99, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
42   0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x99
43 };
44 
45 const size_t kMetadataPayloadSizeCll = 4;
46 const uint8_t kMetadataPayloadCll[kMetadataPayloadSizeCll] = { 0xB5, 0x01, 0x02,
47                                                                0x03 };
48 
49 const size_t kMetadataObuSizeT35 = 28;
50 const uint8_t kMetadataObuT35[kMetadataObuSizeT35] = {
51   0x2A, 0x1A, 0x04, 0xB5, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
52   0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10,
53   0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x80
54 };
55 const size_t kMetadataObuSizeMdcv = 28;
56 const uint8_t kMetadataObuMdcv[kMetadataObuSizeMdcv] = {
57   0x2A, 0x1A, 0x02, 0x99, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
58   0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
59   0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x99, 0x80
60 };
61 const size_t kMetadataObuSizeCll = 8;
62 const uint8_t kMetadataObuCll[kMetadataObuSizeCll] = { 0x2A, 0x06, 0x01, 0xB5,
63                                                        0x01, 0x02, 0x03, 0x80 };
64 
65 #if !CONFIG_REALTIME_ONLY
66 class MetadataEncodeTest
67     : public ::libaom_test::CodecTestWithParam<libaom_test::TestMode>,
68       public ::libaom_test::EncoderTest {
69  protected:
MetadataEncodeTest()70   MetadataEncodeTest() : EncoderTest(GET_PARAM(0)) {}
71 
72   ~MetadataEncodeTest() override = default;
73 
SetUp()74   void SetUp() override { InitializeConfig(GET_PARAM(1)); }
75 
PreEncodeFrameHook(::libaom_test::VideoSource * video,::libaom_test::Encoder * encoder)76   void PreEncodeFrameHook(::libaom_test::VideoSource *video,
77                           ::libaom_test::Encoder *encoder) override {
78     if (video->frame() == 0) {
79       encoder->Control(AOME_SET_CPUUSED, 6);  // Speed up the test.
80     }
81     aom_image_t *current_frame = video->img();
82     if (!current_frame) {
83       return;
84     }
85     if (current_frame->metadata) aom_img_remove_metadata(current_frame);
86     // invalid: size is 0
87     ASSERT_EQ(aom_img_add_metadata(current_frame, OBU_METADATA_TYPE_ITUT_T35,
88                                    kMetadataPayloadT35, 0, AOM_MIF_ANY_FRAME),
89               -1);
90     // invalid: data is nullptr
91     ASSERT_EQ(
92         aom_img_add_metadata(current_frame, OBU_METADATA_TYPE_ITUT_T35, nullptr,
93                              kMetadataPayloadSizeT35, AOM_MIF_ANY_FRAME),
94         -1);
95     // invalid: size is 0 and data is nullptr
96     ASSERT_EQ(aom_img_add_metadata(current_frame, OBU_METADATA_TYPE_ITUT_T35,
97                                    nullptr, 0, AOM_MIF_ANY_FRAME),
98               -1);
99     ASSERT_EQ(aom_img_add_metadata(current_frame, OBU_METADATA_TYPE_ITUT_T35,
100                                    kMetadataPayloadT35, kMetadataPayloadSizeT35,
101                                    AOM_MIF_ANY_FRAME),
102               0);
103 
104     ASSERT_EQ(aom_img_add_metadata(current_frame, OBU_METADATA_TYPE_HDR_MDCV,
105                                    kMetadataPayloadMdcv,
106                                    kMetadataPayloadSizeMdcv, AOM_MIF_KEY_FRAME),
107               0);
108 
109     ASSERT_EQ(aom_img_add_metadata(current_frame, OBU_METADATA_TYPE_HDR_CLL,
110                                    kMetadataPayloadCll, kMetadataPayloadSizeCll,
111                                    AOM_MIF_KEY_FRAME),
112               0);
113   }
114 
FramePktHook(const aom_codec_cx_pkt_t * pkt)115   void FramePktHook(const aom_codec_cx_pkt_t *pkt) override {
116     if (pkt->kind == AOM_CODEC_CX_FRAME_PKT) {
117       const bool is_key_frame = (pkt->data.frame.flags & AOM_FRAME_IS_KEY) != 0;
118 
119       const std::string bitstream(
120           static_cast<const char *>(pkt->data.frame.buf), pkt->data.frame.sz);
121       // Look for valid metadatas in bitstream.
122       const bool itut_t35_metadata_found =
123           bitstream.find(reinterpret_cast<const char *>(kMetadataObuT35), 0,
124                          kMetadataObuSizeT35) != std::string::npos;
125       const bool hdr_mdcv_metadata_found =
126           bitstream.find(reinterpret_cast<const char *>(kMetadataObuMdcv), 0,
127                          kMetadataObuSizeMdcv) != std::string::npos;
128       const bool hdr_cll_metadata_found =
129           bitstream.find(reinterpret_cast<const char *>(kMetadataObuCll), 0,
130                          kMetadataObuSizeCll) != std::string::npos;
131 
132       EXPECT_TRUE(itut_t35_metadata_found);
133       EXPECT_EQ(hdr_mdcv_metadata_found, is_key_frame);
134       EXPECT_EQ(hdr_cll_metadata_found, is_key_frame);
135     }
136   }
137 
DecompressedFrameHook(const aom_image_t & img,aom_codec_pts_t)138   void DecompressedFrameHook(const aom_image_t &img,
139                              aom_codec_pts_t /*pts*/) override {
140     const bool is_key_frame =
141         (num_decompressed_frames_ % cfg_.kf_max_dist) == 0;
142     ++num_decompressed_frames_;
143 
144     ASSERT_NE(img.metadata, nullptr);
145 
146     ASSERT_EQ(img.metadata->sz, is_key_frame ? 3 : 1);
147 
148     ASSERT_EQ(OBU_METADATA_TYPE_ITUT_T35,
149               img.metadata->metadata_array[0]->type);
150     ASSERT_EQ(kMetadataPayloadSizeT35, img.metadata->metadata_array[0]->sz);
151     EXPECT_EQ(
152         memcmp(kMetadataPayloadT35, img.metadata->metadata_array[0]->payload,
153                kMetadataPayloadSizeT35),
154         0);
155 
156     if (is_key_frame) {
157       ASSERT_EQ(OBU_METADATA_TYPE_HDR_MDCV,
158                 img.metadata->metadata_array[1]->type);
159       ASSERT_EQ(kMetadataPayloadSizeMdcv, img.metadata->metadata_array[1]->sz);
160       EXPECT_EQ(
161           memcmp(kMetadataPayloadMdcv, img.metadata->metadata_array[1]->payload,
162                  kMetadataPayloadSizeMdcv),
163           0);
164 
165       ASSERT_EQ(OBU_METADATA_TYPE_HDR_CLL,
166                 img.metadata->metadata_array[2]->type);
167       ASSERT_EQ(kMetadataPayloadSizeCll, img.metadata->metadata_array[2]->sz);
168       EXPECT_EQ(
169           memcmp(kMetadataPayloadCll, img.metadata->metadata_array[2]->payload,
170                  kMetadataPayloadSizeCll),
171           0);
172     }
173   }
174 
175  private:
176   int num_decompressed_frames_ = 0;
177 };
178 
TEST_P(MetadataEncodeTest,TestMetadataEncoding)179 TEST_P(MetadataEncodeTest, TestMetadataEncoding) {
180   ::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
181                                        30, 1, 0, 10);
182   init_flags_ = AOM_CODEC_USE_PSNR;
183 
184   cfg_.g_w = 352;
185   cfg_.g_h = 288;
186 
187   cfg_.rc_buf_initial_sz = 500;
188   cfg_.rc_buf_optimal_sz = 600;
189   cfg_.rc_buf_sz = 1000;
190   cfg_.rc_min_quantizer = 2;
191   cfg_.rc_max_quantizer = 56;
192   cfg_.rc_undershoot_pct = 50;
193   cfg_.rc_overshoot_pct = 50;
194   cfg_.kf_mode = AOM_KF_AUTO;
195   cfg_.g_lag_in_frames = 1;
196   cfg_.kf_min_dist = cfg_.kf_max_dist = 5;
197   // Run at low bitrate.
198   cfg_.rc_target_bitrate = 40;
199 
200   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
201 }
202 
203 AV1_INSTANTIATE_TEST_SUITE(MetadataEncodeTest,
204                            ::testing::Values(::libaom_test::kOnePassGood));
205 #endif  // !CONFIG_REALTIME_ONLY
206 
207 class MetadataMultilayerEncodeTest
208     : public ::libaom_test::CodecTestWithParam<libaom_test::TestMode>,
209       public ::libaom_test::EncoderTest {
210  protected:
MetadataMultilayerEncodeTest()211   MetadataMultilayerEncodeTest() : EncoderTest(GET_PARAM(0)) {}
212 
213   ~MetadataMultilayerEncodeTest() override = default;
214 
215   static const int kNumSpatialLayers = 3;
216 
SetUp()217   void SetUp() override { InitializeConfig(GET_PARAM(1)); }
218 
GetNumSpatialLayers()219   int GetNumSpatialLayers() override { return kNumSpatialLayers; }
220 
PreEncodeFrameHook(::libaom_test::VideoSource * video,::libaom_test::Encoder * encoder)221   void PreEncodeFrameHook(::libaom_test::VideoSource *video,
222                           ::libaom_test::Encoder *encoder) override {
223     aom_image_t *current_frame = video->img();
224     if (!current_frame) {
225       return;
226     }
227 
228     // One-time initialization only done on the first frame.
229     if (num_encoded_frames_ == 0) {
230       encoder->Control(AOME_SET_CPUUSED, 6);  // Speed up the test.
231       aom_svc_params_t svc_params = GetSvcParams();
232       encoder->Control(AV1E_SET_SVC_PARAMS, &svc_params);
233     }
234 
235     const int spatial_layer_id = num_encoded_frames_ % 3;
236     aom_svc_layer_id_t layer_id = { spatial_layer_id, 0 };
237     encoder->Control(AV1E_SET_SVC_LAYER_ID, &layer_id);
238 
239     if (current_frame->metadata) aom_img_remove_metadata(current_frame);
240 
241     ASSERT_EQ(aom_img_add_metadata(current_frame, OBU_METADATA_TYPE_ITUT_T35,
242                                    kMetadataPayloadT35, kMetadataPayloadSizeT35,
243                                    AOM_MIF_ANY_FRAME),
244               0);
245 
246     ASSERT_EQ(aom_img_add_metadata(current_frame, OBU_METADATA_TYPE_HDR_MDCV,
247                                    kMetadataPayloadMdcv,
248                                    kMetadataPayloadSizeMdcv, AOM_MIF_KEY_FRAME),
249               0);
250 
251     ASSERT_EQ(aom_img_add_metadata(current_frame, OBU_METADATA_TYPE_HDR_CLL,
252                                    kMetadataPayloadCll, kMetadataPayloadSizeCll,
253                                    AOM_MIF_KEY_FRAME),
254               0);
255 
256     num_encoded_frames_++;
257   }
258 
FramePktHook(const aom_codec_cx_pkt_t * pkt)259   void FramePktHook(const aom_codec_cx_pkt_t *pkt) override {
260     if (pkt->kind == AOM_CODEC_CX_FRAME_PKT) {
261       const bool is_key_frame = (pkt->data.frame.flags & AOM_FRAME_IS_KEY) != 0;
262 
263       const std::string bitstream(
264           static_cast<const char *>(pkt->data.frame.buf), pkt->data.frame.sz);
265 
266       // Look for valid metadatas in bitstream.
267       const bool itut_t35_metadata_found =
268           bitstream.find(reinterpret_cast<const char *>(kMetadataObuT35), 0,
269                          kMetadataObuSizeT35) != std::string::npos;
270       const bool hdr_mdcv_metadata_found =
271           bitstream.find(reinterpret_cast<const char *>(kMetadataObuMdcv), 0,
272                          kMetadataObuSizeMdcv) != std::string::npos;
273       const bool hdr_cll_metadata_found =
274           bitstream.find(reinterpret_cast<const char *>(kMetadataObuCll), 0,
275                          kMetadataObuSizeCll) != std::string::npos;
276 
277       EXPECT_TRUE(itut_t35_metadata_found);
278       EXPECT_EQ(hdr_mdcv_metadata_found, is_key_frame);
279       EXPECT_EQ(hdr_cll_metadata_found, is_key_frame);
280     }
281   }
282 
DecompressedFrameHook(const aom_image_t & img,aom_codec_pts_t)283   void DecompressedFrameHook(const aom_image_t &img,
284                              aom_codec_pts_t /*pts*/) override {
285     const bool is_key_frame = (num_decompressed_frames_ == 0);
286 
287     ++num_decompressed_frames_;
288 
289     ASSERT_NE(img.metadata, nullptr);
290 
291     ASSERT_EQ(img.metadata->sz, is_key_frame ? 3 : 1);
292 
293     ASSERT_EQ(OBU_METADATA_TYPE_ITUT_T35,
294               img.metadata->metadata_array[0]->type);
295     ASSERT_EQ(kMetadataPayloadSizeT35, img.metadata->metadata_array[0]->sz);
296     EXPECT_EQ(
297         memcmp(kMetadataPayloadT35, img.metadata->metadata_array[0]->payload,
298                kMetadataPayloadSizeT35),
299         0);
300 
301     if (is_key_frame) {
302       ASSERT_EQ(OBU_METADATA_TYPE_HDR_MDCV,
303                 img.metadata->metadata_array[1]->type);
304       ASSERT_EQ(kMetadataPayloadSizeMdcv, img.metadata->metadata_array[1]->sz);
305       EXPECT_EQ(
306           memcmp(kMetadataPayloadMdcv, img.metadata->metadata_array[1]->payload,
307                  kMetadataPayloadSizeMdcv),
308           0);
309 
310       ASSERT_EQ(OBU_METADATA_TYPE_HDR_CLL,
311                 img.metadata->metadata_array[2]->type);
312       ASSERT_EQ(kMetadataPayloadSizeCll, img.metadata->metadata_array[2]->sz);
313       EXPECT_EQ(
314           memcmp(kMetadataPayloadCll, img.metadata->metadata_array[2]->payload,
315                  kMetadataPayloadSizeCll),
316           0);
317     }
318   }
319 
320  private:
GetSvcParams()321   aom_svc_params_t GetSvcParams() {
322     aom_svc_params_t svc_params = {};
323     svc_params.number_spatial_layers = kNumSpatialLayers;
324     svc_params.number_temporal_layers = 1;
325     for (int i = 0; i < kNumSpatialLayers; ++i) {
326       svc_params.max_quantizers[i] = 60;
327       svc_params.min_quantizers[i] = 2;
328     }
329 
330     svc_params.framerate_factor[0] = 1;
331 
332     svc_params.layer_target_bitrate[0] = 30 * cfg_.rc_target_bitrate / 100;
333     svc_params.layer_target_bitrate[1] = 60 * cfg_.rc_target_bitrate / 100;
334     svc_params.layer_target_bitrate[2] = cfg_.rc_target_bitrate;
335 
336     svc_params.scaling_factor_num[0] = 1;
337     svc_params.scaling_factor_den[0] = 4;
338     svc_params.scaling_factor_num[1] = 1;
339     svc_params.scaling_factor_den[1] = 2;
340     svc_params.scaling_factor_num[2] = 1;
341     svc_params.scaling_factor_den[2] = 1;
342 
343     return svc_params;
344   }
345 
346   int num_encoded_frames_ = 0;
347   int num_decompressed_frames_ = 0;
348 };
349 
350 }  // namespace
351 
TEST_P(MetadataMultilayerEncodeTest,Test)352 TEST_P(MetadataMultilayerEncodeTest, Test) {
353   cfg_.rc_buf_initial_sz = 500;
354   cfg_.rc_buf_optimal_sz = 500;
355   cfg_.rc_buf_sz = 1000;
356   cfg_.g_lag_in_frames = 0;
357   cfg_.g_error_resilient = 0;
358   cfg_.rc_target_bitrate = 1200;
359 
360   ::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
361                                        30, 1, 0, /*limit=*/10);
362   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
363 }
364 
365 AV1_INSTANTIATE_TEST_SUITE(MetadataMultilayerEncodeTest,
366                            ::testing::Values(::libaom_test::kRealTime));
367 
TEST(MetadataTest,MetadataAllocation)368 TEST(MetadataTest, MetadataAllocation) {
369   aom_metadata_t *metadata =
370       aom_img_metadata_alloc(OBU_METADATA_TYPE_ITUT_T35, kMetadataPayloadT35,
371                              kMetadataPayloadSizeT35, AOM_MIF_ANY_FRAME);
372   ASSERT_NE(metadata, nullptr);
373   aom_img_metadata_free(metadata);
374 }
375 
TEST(MetadataTest,MetadataArrayAllocation)376 TEST(MetadataTest, MetadataArrayAllocation) {
377   aom_metadata_array_t *metadata_array = aom_img_metadata_array_alloc(2);
378   ASSERT_NE(metadata_array, nullptr);
379 
380   metadata_array->metadata_array[0] =
381       aom_img_metadata_alloc(OBU_METADATA_TYPE_ITUT_T35, kMetadataPayloadT35,
382                              kMetadataPayloadSizeT35, AOM_MIF_ANY_FRAME);
383   metadata_array->metadata_array[1] =
384       aom_img_metadata_alloc(OBU_METADATA_TYPE_ITUT_T35, kMetadataPayloadT35,
385                              kMetadataPayloadSizeT35, AOM_MIF_ANY_FRAME);
386 
387   aom_img_metadata_array_free(metadata_array);
388 }
389 
TEST(MetadataTest,AddMetadataToImage)390 TEST(MetadataTest, AddMetadataToImage) {
391   aom_image_t image;
392   image.metadata = nullptr;
393 
394   ASSERT_EQ(aom_img_add_metadata(&image, OBU_METADATA_TYPE_ITUT_T35,
395                                  kMetadataPayloadT35, kMetadataPayloadSizeT35,
396                                  AOM_MIF_ANY_FRAME),
397             0);
398   aom_img_metadata_array_free(image.metadata);
399   EXPECT_EQ(aom_img_add_metadata(nullptr, OBU_METADATA_TYPE_ITUT_T35,
400                                  kMetadataPayloadT35, kMetadataPayloadSizeT35,
401                                  AOM_MIF_ANY_FRAME),
402             -1);
403 }
404 
TEST(MetadataTest,RemoveMetadataFromImage)405 TEST(MetadataTest, RemoveMetadataFromImage) {
406   aom_image_t image;
407   image.metadata = nullptr;
408 
409   ASSERT_EQ(aom_img_add_metadata(&image, OBU_METADATA_TYPE_ITUT_T35,
410                                  kMetadataPayloadT35, kMetadataPayloadSizeT35,
411                                  AOM_MIF_ANY_FRAME),
412             0);
413   aom_img_remove_metadata(&image);
414   aom_img_remove_metadata(nullptr);
415 }
416 
TEST(MetadataTest,CopyMetadataToFrameBuffer)417 TEST(MetadataTest, CopyMetadataToFrameBuffer) {
418   YV12_BUFFER_CONFIG yvBuf;
419   yvBuf.metadata = nullptr;
420 
421   aom_metadata_array_t *metadata_array = aom_img_metadata_array_alloc(1);
422   ASSERT_NE(metadata_array, nullptr);
423 
424   metadata_array->metadata_array[0] =
425       aom_img_metadata_alloc(OBU_METADATA_TYPE_ITUT_T35, kMetadataPayloadT35,
426                              kMetadataPayloadSizeT35, AOM_MIF_ANY_FRAME);
427 
428   // Metadata_array
429   int status = aom_copy_metadata_to_frame_buffer(&yvBuf, metadata_array);
430   EXPECT_EQ(status, 0);
431   status = aom_copy_metadata_to_frame_buffer(nullptr, metadata_array);
432   EXPECT_EQ(status, -1);
433   aom_img_metadata_array_free(metadata_array);
434 
435   // Metadata_array_2
436   aom_metadata_array_t *metadata_array_2 = aom_img_metadata_array_alloc(0);
437   ASSERT_NE(metadata_array_2, nullptr);
438   status = aom_copy_metadata_to_frame_buffer(&yvBuf, metadata_array_2);
439   EXPECT_EQ(status, -1);
440   aom_img_metadata_array_free(metadata_array_2);
441 
442   // YV12_BUFFER_CONFIG
443   status = aom_copy_metadata_to_frame_buffer(&yvBuf, nullptr);
444   EXPECT_EQ(status, -1);
445   aom_remove_metadata_from_frame_buffer(&yvBuf);
446   aom_remove_metadata_from_frame_buffer(nullptr);
447 }
448 
TEST(MetadataTest,GetMetadataFromImage)449 TEST(MetadataTest, GetMetadataFromImage) {
450   aom_image_t image;
451   image.metadata = nullptr;
452 
453   ASSERT_EQ(aom_img_add_metadata(&image, OBU_METADATA_TYPE_ITUT_T35,
454                                  kMetadataPayloadT35, kMetadataPayloadSizeT35,
455                                  AOM_MIF_ANY_FRAME),
456             0);
457 
458   EXPECT_EQ(aom_img_get_metadata(nullptr, 0), nullptr);
459   EXPECT_EQ(aom_img_get_metadata(&image, 1u), nullptr);
460   EXPECT_EQ(aom_img_get_metadata(&image, 10u), nullptr);
461 
462   const aom_metadata_t *metadata = aom_img_get_metadata(&image, 0);
463   ASSERT_NE(metadata, nullptr);
464   ASSERT_EQ(metadata->sz, kMetadataPayloadSizeT35);
465   EXPECT_EQ(
466       memcmp(kMetadataPayloadT35, metadata->payload, kMetadataPayloadSizeT35),
467       0);
468 
469   aom_img_metadata_array_free(image.metadata);
470 }
471 
TEST(MetadataTest,ReadMetadatasFromImage)472 TEST(MetadataTest, ReadMetadatasFromImage) {
473   aom_image_t image;
474   image.metadata = nullptr;
475 
476   uint32_t types[3];
477   types[0] = OBU_METADATA_TYPE_ITUT_T35;
478   types[1] = OBU_METADATA_TYPE_HDR_CLL;
479   types[2] = OBU_METADATA_TYPE_HDR_MDCV;
480 
481   ASSERT_EQ(aom_img_add_metadata(&image, types[0], kMetadataPayloadT35,
482                                  kMetadataPayloadSizeT35, AOM_MIF_ANY_FRAME),
483             0);
484   ASSERT_EQ(aom_img_add_metadata(&image, types[1], kMetadataPayloadT35,
485                                  kMetadataPayloadSizeT35, AOM_MIF_KEY_FRAME),
486             0);
487   ASSERT_EQ(aom_img_add_metadata(&image, types[2], kMetadataPayloadT35,
488                                  kMetadataPayloadSizeT35, AOM_MIF_KEY_FRAME),
489             0);
490 
491   size_t number_metadata = aom_img_num_metadata(&image);
492   ASSERT_EQ(number_metadata, 3u);
493   for (size_t i = 0; i < number_metadata; ++i) {
494     const aom_metadata_t *metadata = aom_img_get_metadata(&image, i);
495     ASSERT_NE(metadata, nullptr);
496     ASSERT_EQ(metadata->type, types[i]);
497     ASSERT_EQ(metadata->sz, kMetadataPayloadSizeT35);
498     EXPECT_EQ(
499         memcmp(kMetadataPayloadT35, metadata->payload, kMetadataPayloadSizeT35),
500         0);
501   }
502   aom_img_metadata_array_free(image.metadata);
503 }
504