test/forced_max_frame_width_height_test.cc - aom - Git at Google

 /*
  * Copyright (c) 2022, Alliance for Open Media. All rights reserved
  *
  * This source code is subject to the terms of the BSD 2 Clause License and
  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
  * was not distributed with this source code in the LICENSE file, you can
  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
  * Media Patent License 1.0 was not distributed with this source code in the
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */

 // Tests for https://crbug.com/aomedia/3326.
 //
 // Set cfg.g_forced_max_frame_width and cfg.g_forced_max_frame_height and
 // encode two frames of increasing sizes. The second aom_codec_encode() should
 // not crash or have memory errors.

 #include <algorithm>
 #include <memory>
 #include <vector>

 #include "aom/aomcx.h"
 #include "aom/aom_encoder.h"
 #include "config/aom_config.h"
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"

 namespace {

 // cfg.g_lag_in_frames must be set to 0 or 1 to allow the frame size to change,
 // as required by the following check in encoder_set_config() in
 // av1/av1_cx_iface.c:
 //
 //   if (cfg->g_w != ctx->cfg.g_w || cfg->g_h != ctx->cfg.g_h) {
 //     if (cfg->g_lag_in_frames > 1 || cfg->g_pass != AOM_RC_ONE_PASS)
 //       ERROR("Cannot change width or height after initialization");
 //     ...
 //   }

 void RunTest(unsigned int usage, unsigned int lag_in_frames,
              const char *tune_metric) {
   // A buffer of gray samples. Large enough for 128x128 and 256x256, YUV 4:2:0.
   constexpr size_t kImageDataSize = 256 * 256 + 2 * 128 * 128;
   std::unique_ptr<unsigned char[]> img_data(new unsigned char[kImageDataSize]);
   ASSERT_NE(img_data, nullptr);
   memset(img_data.get(), 128, kImageDataSize);

   aom_codec_iface_t *iface = aom_codec_av1_cx();
   aom_codec_enc_cfg_t cfg;
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_config_default(iface, &cfg, usage));
   cfg.g_w = 128;
   cfg.g_h = 128;
   cfg.g_forced_max_frame_width = 256;
   cfg.g_forced_max_frame_height = 256;
   cfg.g_lag_in_frames = lag_in_frames;
   aom_codec_ctx_t enc;
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_init(&enc, iface, &cfg, 0));
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_set_option(&enc, "tune", tune_metric));

   aom_image_t img;
   EXPECT_EQ(&img,
             aom_img_wrap(&img, AOM_IMG_FMT_I420, 128, 128, 1, img_data.get()));
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));

   cfg.g_w = 256;
   cfg.g_h = 256;
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_config_set(&enc, &cfg));

   EXPECT_EQ(&img,
             aom_img_wrap(&img, AOM_IMG_FMT_I420, 256, 256, 1, img_data.get()));
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));

   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, nullptr, 0, 0, 0));
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_destroy(&enc));
 }

 #if !CONFIG_REALTIME_ONLY

 TEST(EncodeForcedMaxFrameWidthHeight, GoodQualityLag0TunePSNR) {
   RunTest(AOM_USAGE_GOOD_QUALITY, /*lag_in_frames=*/0, "psnr");
 }

 TEST(EncodeForcedMaxFrameWidthHeight, GoodQualityLag0TuneSSIM) {
   RunTest(AOM_USAGE_GOOD_QUALITY, /*lag_in_frames=*/0, "ssim");
 }

 TEST(EncodeForcedMaxFrameWidthHeight, GoodQualityLag1TunePSNR) {
   RunTest(AOM_USAGE_GOOD_QUALITY, /*lag_in_frames=*/1, "psnr");
 }

 TEST(EncodeForcedMaxFrameWidthHeight, GoodQualityLag1TuneSSIM) {
   RunTest(AOM_USAGE_GOOD_QUALITY, /*lag_in_frames=*/1, "ssim");
 }

 void FillImageGradient(aom_image_t *image, int bit_depth) {
   assert(image->range == AOM_CR_FULL_RANGE);
   for (int plane = 0; plane < 3; plane++) {
     const int plane_width = aom_img_plane_width(image, plane);
     const int plane_height = aom_img_plane_height(image, plane);
     unsigned char *row = image->planes[plane];
     const int stride = image->stride[plane];
     for (int y = 0; y < plane_height; ++y) {
       for (int x = 0; x < plane_width; ++x) {
         const int value = (x + y) * ((1 << bit_depth) - 1) /
                           std::max(1, plane_width + plane_height - 2);
         assert(value >= 0 && value <= (1 << bit_depth) - 1);
         if (bit_depth > 8) {
           reinterpret_cast<uint16_t *>(row)[x] = static_cast<uint16_t>(value);
         } else {
           row[x] = static_cast<unsigned char>(value);
         }
       }
       row += stride;
     }
   }
 }

 // A test that reproduces bug aomedia:3348: Assertion
 // `ms_params->ms_buffers.ref->stride == ms_params->search_sites->stride'
 // failed.
 TEST(EncodeForcedMaxFrameWidthHeight, DISABLED_DimensionDecreasing) {
   constexpr int kWidth = 128;
   constexpr int kHeight = 128;
   constexpr size_t kBufferSize = 3 * kWidth * kHeight;
   std::vector<unsigned char> buffer(kBufferSize);

   aom_image_t img;
   EXPECT_EQ(&img, aom_img_wrap(&img, AOM_IMG_FMT_I420, kWidth, kHeight, 1,
                                buffer.data()));
   img.cp = AOM_CICP_CP_UNSPECIFIED;
   img.tc = AOM_CICP_TC_UNSPECIFIED;
   img.mc = AOM_CICP_MC_UNSPECIFIED;
   img.range = AOM_CR_FULL_RANGE;
   FillImageGradient(&img, 8);

   aom_codec_iface_t *iface = aom_codec_av1_cx();
   aom_codec_enc_cfg_t cfg;
   EXPECT_EQ(AOM_CODEC_OK,
             aom_codec_enc_config_default(iface, &cfg, AOM_USAGE_GOOD_QUALITY));
   cfg.rc_end_usage = AOM_Q;
   cfg.g_profile = 0;
   cfg.g_bit_depth = AOM_BITS_8;
   cfg.g_input_bit_depth = 8;
   cfg.g_w = kWidth;
   cfg.g_h = kHeight;
   cfg.g_forced_max_frame_width = kWidth;
   cfg.g_forced_max_frame_height = kHeight;
   cfg.g_lag_in_frames = 1;
   cfg.rc_min_quantizer = 20;
   cfg.rc_max_quantizer = 40;
   aom_codec_ctx_t enc;
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_init(&enc, iface, &cfg, 0));
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_control(&enc, AOME_SET_CQ_LEVEL, 30));
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_control(&enc, AOME_SET_CPUUSED, 6));
   EXPECT_EQ(AOM_CODEC_OK,
             aom_codec_control(&enc, AV1E_SET_COLOR_RANGE, AOM_CR_FULL_RANGE));
   EXPECT_EQ(AOM_CODEC_OK,
             aom_codec_control(&enc, AOME_SET_TUNING, AOM_TUNE_SSIM));

   // First frame
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
   aom_codec_iter_t iter = nullptr;
   const aom_codec_cx_pkt_t *pkt = aom_codec_get_cx_data(&enc, &iter);
   ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0x1f0011.
   EXPECT_NE(pkt->data.frame.flags & AOM_FRAME_IS_KEY, 0u);
   pkt = aom_codec_get_cx_data(&enc, &iter);
   EXPECT_EQ(pkt, nullptr);

   // Second frame
   constexpr int kWidthSmall = 64;
   constexpr int kHeightSmall = 64;
   EXPECT_EQ(&img, aom_img_wrap(&img, AOM_IMG_FMT_I420, kWidthSmall,
                                kHeightSmall, 1, buffer.data()));
   img.cp = AOM_CICP_CP_UNSPECIFIED;
   img.tc = AOM_CICP_TC_UNSPECIFIED;
   img.mc = AOM_CICP_MC_UNSPECIFIED;
   img.range = AOM_CR_FULL_RANGE;
   FillImageGradient(&img, 8);
   cfg.g_w = kWidthSmall;
   cfg.g_h = kHeightSmall;
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_config_set(&enc, &cfg));
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
   iter = nullptr;
   pkt = aom_codec_get_cx_data(&enc, &iter);
   ASSERT_NE(pkt, nullptr);
   EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
   // pkt->data.frame.flags is 0.
   EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, 0u);
   pkt = aom_codec_get_cx_data(&enc, &iter);
   EXPECT_EQ(pkt, nullptr);

   // Flush encoder
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, nullptr, 0, 1, 0));
   iter = nullptr;
   pkt = aom_codec_get_cx_data(&enc, &iter);
   EXPECT_EQ(pkt, nullptr);

   EXPECT_EQ(AOM_CODEC_OK, aom_codec_destroy(&enc));
 }

 #endif  // !CONFIG_REALTIME_ONLY

 TEST(EncodeForcedMaxFrameWidthHeight, RealtimeLag0TunePSNR) {
   RunTest(AOM_USAGE_REALTIME, /*lag_in_frames=*/0, "psnr");
 }

 TEST(EncodeForcedMaxFrameWidthHeight, RealtimeLag0TuneSSIM) {
   RunTest(AOM_USAGE_REALTIME, /*lag_in_frames=*/0, "ssim");
 }

 TEST(EncodeForcedMaxFrameWidthHeight, RealtimeLag1TunePSNR) {
   RunTest(AOM_USAGE_REALTIME, /*lag_in_frames=*/1, "psnr");
 }

 TEST(EncodeForcedMaxFrameWidthHeight, RealtimeLag1TuneSSIM) {
   RunTest(AOM_USAGE_REALTIME, /*lag_in_frames=*/1, "ssim");
 }

 TEST(EncodeForcedMaxFrameWidthHeight, MaxFrameSizeTooBig) {
   aom_codec_iface_t *iface = aom_codec_av1_cx();
   aom_codec_enc_cfg_t cfg;
   EXPECT_EQ(AOM_CODEC_OK,
             aom_codec_enc_config_default(iface, &cfg, AOM_USAGE_REALTIME));
   cfg.g_w = 256;
   cfg.g_h = 256;
   cfg.g_forced_max_frame_width = 131072;
   cfg.g_forced_max_frame_height = 131072;
   aom_codec_ctx_t enc;
   EXPECT_EQ(AOM_CODEC_INVALID_PARAM, aom_codec_enc_init(&enc, iface, &cfg, 0));
 }

 TEST(EncodeForcedMaxFrameWidthHeight, FirstFrameTooBig) {
   aom_codec_iface_t *iface = aom_codec_av1_cx();
   aom_codec_enc_cfg_t cfg;
   EXPECT_EQ(AOM_CODEC_OK,
             aom_codec_enc_config_default(iface, &cfg, AOM_USAGE_REALTIME));
   cfg.g_w = 258;
   cfg.g_h = 256;
   cfg.g_forced_max_frame_width = 256;
   cfg.g_forced_max_frame_height = 256;
   aom_codec_ctx_t enc;
   EXPECT_EQ(AOM_CODEC_INVALID_PARAM, aom_codec_enc_init(&enc, iface, &cfg, 0));
   cfg.g_w = 256;
   cfg.g_h = 258;
   EXPECT_EQ(AOM_CODEC_INVALID_PARAM, aom_codec_enc_init(&enc, iface, &cfg, 0));
   cfg.g_w = 256;
   cfg.g_h = 256;
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_init(&enc, iface, &cfg, 0));
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_destroy(&enc));
 }

 TEST(EncodeForcedMaxFrameWidthHeight, SecondFrameTooBig) {
   // A buffer of gray samples. Large enough for 128x128 and 256x256, YUV 4:2:0.
   constexpr size_t kImageDataSize = 256 * 256 + 2 * 128 * 128;
   std::unique_ptr<unsigned char[]> img_data(new unsigned char[kImageDataSize]);
   ASSERT_NE(img_data, nullptr);
   memset(img_data.get(), 128, kImageDataSize);

   aom_codec_iface_t *iface = aom_codec_av1_cx();
   aom_codec_enc_cfg_t cfg;
   EXPECT_EQ(AOM_CODEC_OK,
             aom_codec_enc_config_default(iface, &cfg, AOM_USAGE_REALTIME));
   cfg.g_w = 128;
   cfg.g_h = 128;
   cfg.g_forced_max_frame_width = 255;
   cfg.g_forced_max_frame_height = 256;
   aom_codec_ctx_t enc;
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_init(&enc, iface, &cfg, 0));

   aom_image_t img;
   EXPECT_EQ(&img,
             aom_img_wrap(&img, AOM_IMG_FMT_I420, 128, 128, 1, img_data.get()));
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));

   cfg.g_w = 256;
   cfg.g_h = 256;
   EXPECT_EQ(AOM_CODEC_INVALID_PARAM, aom_codec_enc_config_set(&enc, &cfg));

   EXPECT_EQ(AOM_CODEC_OK, aom_codec_destroy(&enc));
 }

 }  // namespace
	/*
	* Copyright (c) 2022, Alliance for Open Media. All rights reserved
	*
	* This source code is subject to the terms of the BSD 2 Clause License and
	* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
	* was not distributed with this source code in the LICENSE file, you can
	* obtain it at www.aomedia.org/license/software. If the Alliance for Open
	* Media Patent License 1.0 was not distributed with this source code in the
	* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
	*/

	// Tests for https://crbug.com/aomedia/3326.
	//
	// Set cfg.g_forced_max_frame_width and cfg.g_forced_max_frame_height and
	// encode two frames of increasing sizes. The second aom_codec_encode() should
	// not crash or have memory errors.

	#include <algorithm>
	#include <memory>
	#include <vector>

	#include "aom/aomcx.h"
	#include "aom/aom_encoder.h"
	#include "config/aom_config.h"
	#include "third_party/googletest/src/googletest/include/gtest/gtest.h"

	namespace {

	// cfg.g_lag_in_frames must be set to 0 or 1 to allow the frame size to change,
	// as required by the following check in encoder_set_config() in
	// av1/av1_cx_iface.c:
	//
	// if (cfg->g_w != ctx->cfg.g_w \|\| cfg->g_h != ctx->cfg.g_h) {
	// if (cfg->g_lag_in_frames > 1 \|\| cfg->g_pass != AOM_RC_ONE_PASS)
	// ERROR("Cannot change width or height after initialization");
	// ...
	// }

	void RunTest(unsigned int usage, unsigned int lag_in_frames,
	const char *tune_metric) {
	// A buffer of gray samples. Large enough for 128x128 and 256x256, YUV 4:2:0.
	constexpr size_t kImageDataSize = 256 * 256 + 2 * 128 * 128;
	std::unique_ptr<unsigned char[]> img_data(new unsigned char[kImageDataSize]);
	ASSERT_NE(img_data, nullptr);
	memset(img_data.get(), 128, kImageDataSize);

	aom_codec_iface_t *iface = aom_codec_av1_cx();
	aom_codec_enc_cfg_t cfg;
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_config_default(iface, &cfg, usage));
	cfg.g_w = 128;
	cfg.g_h = 128;
	cfg.g_forced_max_frame_width = 256;
	cfg.g_forced_max_frame_height = 256;
	cfg.g_lag_in_frames = lag_in_frames;
	aom_codec_ctx_t enc;
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_init(&enc, iface, &cfg, 0));
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_set_option(&enc, "tune", tune_metric));

	aom_image_t img;
	EXPECT_EQ(&img,
	aom_img_wrap(&img, AOM_IMG_FMT_I420, 128, 128, 1, img_data.get()));
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));

	cfg.g_w = 256;
	cfg.g_h = 256;
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_config_set(&enc, &cfg));

	EXPECT_EQ(&img,
	aom_img_wrap(&img, AOM_IMG_FMT_I420, 256, 256, 1, img_data.get()));
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));

	EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, nullptr, 0, 0, 0));
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_destroy(&enc));
	}

	#if !CONFIG_REALTIME_ONLY

	TEST(EncodeForcedMaxFrameWidthHeight, GoodQualityLag0TunePSNR) {
	RunTest(AOM_USAGE_GOOD_QUALITY, /lag_in_frames=/0, "psnr");
	}

	TEST(EncodeForcedMaxFrameWidthHeight, GoodQualityLag0TuneSSIM) {
	RunTest(AOM_USAGE_GOOD_QUALITY, /lag_in_frames=/0, "ssim");
	}

	TEST(EncodeForcedMaxFrameWidthHeight, GoodQualityLag1TunePSNR) {
	RunTest(AOM_USAGE_GOOD_QUALITY, /lag_in_frames=/1, "psnr");
	}

	TEST(EncodeForcedMaxFrameWidthHeight, GoodQualityLag1TuneSSIM) {
	RunTest(AOM_USAGE_GOOD_QUALITY, /lag_in_frames=/1, "ssim");
	}

	void FillImageGradient(aom_image_t *image, int bit_depth) {
	assert(image->range == AOM_CR_FULL_RANGE);
	for (int plane = 0; plane < 3; plane++) {
	const int plane_width = aom_img_plane_width(image, plane);
	const int plane_height = aom_img_plane_height(image, plane);
	unsigned char *row = image->planes[plane];
	const int stride = image->stride[plane];
	for (int y = 0; y < plane_height; ++y) {
	for (int x = 0; x < plane_width; ++x) {
	const int value = (x + y) * ((1 << bit_depth) - 1) /
	std::max(1, plane_width + plane_height - 2);
	assert(value >= 0 && value <= (1 << bit_depth) - 1);
	if (bit_depth > 8) {
	reinterpret_cast<uint16_t *>(row)[x] = static_cast<uint16_t>(value);
	} else {
	row[x] = static_cast<unsigned char>(value);
	}
	}
	row += stride;
	}
	}
	}

	// A test that reproduces bug aomedia:3348: Assertion
	// `ms_params->ms_buffers.ref->stride == ms_params->search_sites->stride'
	// failed.
	TEST(EncodeForcedMaxFrameWidthHeight, DISABLED_DimensionDecreasing) {
	constexpr int kWidth = 128;
	constexpr int kHeight = 128;
	constexpr size_t kBufferSize = 3 * kWidth * kHeight;
	std::vector<unsigned char> buffer(kBufferSize);

	aom_image_t img;
	EXPECT_EQ(&img, aom_img_wrap(&img, AOM_IMG_FMT_I420, kWidth, kHeight, 1,
	buffer.data()));
	img.cp = AOM_CICP_CP_UNSPECIFIED;
	img.tc = AOM_CICP_TC_UNSPECIFIED;
	img.mc = AOM_CICP_MC_UNSPECIFIED;
	img.range = AOM_CR_FULL_RANGE;
	FillImageGradient(&img, 8);

	aom_codec_iface_t *iface = aom_codec_av1_cx();
	aom_codec_enc_cfg_t cfg;
	EXPECT_EQ(AOM_CODEC_OK,
	aom_codec_enc_config_default(iface, &cfg, AOM_USAGE_GOOD_QUALITY));
	cfg.rc_end_usage = AOM_Q;
	cfg.g_profile = 0;
	cfg.g_bit_depth = AOM_BITS_8;
	cfg.g_input_bit_depth = 8;
	cfg.g_w = kWidth;
	cfg.g_h = kHeight;
	cfg.g_forced_max_frame_width = kWidth;
	cfg.g_forced_max_frame_height = kHeight;
	cfg.g_lag_in_frames = 1;
	cfg.rc_min_quantizer = 20;
	cfg.rc_max_quantizer = 40;
	aom_codec_ctx_t enc;
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_init(&enc, iface, &cfg, 0));
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_control(&enc, AOME_SET_CQ_LEVEL, 30));
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_control(&enc, AOME_SET_CPUUSED, 6));
	EXPECT_EQ(AOM_CODEC_OK,
	aom_codec_control(&enc, AV1E_SET_COLOR_RANGE, AOM_CR_FULL_RANGE));
	EXPECT_EQ(AOM_CODEC_OK,
	aom_codec_control(&enc, AOME_SET_TUNING, AOM_TUNE_SSIM));

	// First frame
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
	aom_codec_iter_t iter = nullptr;
	const aom_codec_cx_pkt_t *pkt = aom_codec_get_cx_data(&enc, &iter);
	ASSERT_NE(pkt, nullptr);
	EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
	// pkt->data.frame.flags is 0x1f0011.
	EXPECT_NE(pkt->data.frame.flags & AOM_FRAME_IS_KEY, 0u);
	pkt = aom_codec_get_cx_data(&enc, &iter);
	EXPECT_EQ(pkt, nullptr);

	// Second frame
	constexpr int kWidthSmall = 64;
	constexpr int kHeightSmall = 64;
	EXPECT_EQ(&img, aom_img_wrap(&img, AOM_IMG_FMT_I420, kWidthSmall,
	kHeightSmall, 1, buffer.data()));
	img.cp = AOM_CICP_CP_UNSPECIFIED;
	img.tc = AOM_CICP_TC_UNSPECIFIED;
	img.mc = AOM_CICP_MC_UNSPECIFIED;
	img.range = AOM_CR_FULL_RANGE;
	FillImageGradient(&img, 8);
	cfg.g_w = kWidthSmall;
	cfg.g_h = kHeightSmall;
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_config_set(&enc, &cfg));
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));
	iter = nullptr;
	pkt = aom_codec_get_cx_data(&enc, &iter);
	ASSERT_NE(pkt, nullptr);
	EXPECT_EQ(pkt->kind, AOM_CODEC_CX_FRAME_PKT);
	// pkt->data.frame.flags is 0.
	EXPECT_EQ(pkt->data.frame.flags & AOM_FRAME_IS_KEY, 0u);
	pkt = aom_codec_get_cx_data(&enc, &iter);
	EXPECT_EQ(pkt, nullptr);

	// Flush encoder
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, nullptr, 0, 1, 0));
	iter = nullptr;
	pkt = aom_codec_get_cx_data(&enc, &iter);
	EXPECT_EQ(pkt, nullptr);

	EXPECT_EQ(AOM_CODEC_OK, aom_codec_destroy(&enc));
	}

	#endif // !CONFIG_REALTIME_ONLY

	TEST(EncodeForcedMaxFrameWidthHeight, RealtimeLag0TunePSNR) {
	RunTest(AOM_USAGE_REALTIME, /lag_in_frames=/0, "psnr");
	}

	TEST(EncodeForcedMaxFrameWidthHeight, RealtimeLag0TuneSSIM) {
	RunTest(AOM_USAGE_REALTIME, /lag_in_frames=/0, "ssim");
	}

	TEST(EncodeForcedMaxFrameWidthHeight, RealtimeLag1TunePSNR) {
	RunTest(AOM_USAGE_REALTIME, /lag_in_frames=/1, "psnr");
	}

	TEST(EncodeForcedMaxFrameWidthHeight, RealtimeLag1TuneSSIM) {
	RunTest(AOM_USAGE_REALTIME, /lag_in_frames=/1, "ssim");
	}

	TEST(EncodeForcedMaxFrameWidthHeight, MaxFrameSizeTooBig) {
	aom_codec_iface_t *iface = aom_codec_av1_cx();
	aom_codec_enc_cfg_t cfg;
	EXPECT_EQ(AOM_CODEC_OK,
	aom_codec_enc_config_default(iface, &cfg, AOM_USAGE_REALTIME));
	cfg.g_w = 256;
	cfg.g_h = 256;
	cfg.g_forced_max_frame_width = 131072;
	cfg.g_forced_max_frame_height = 131072;
	aom_codec_ctx_t enc;
	EXPECT_EQ(AOM_CODEC_INVALID_PARAM, aom_codec_enc_init(&enc, iface, &cfg, 0));
	}

	TEST(EncodeForcedMaxFrameWidthHeight, FirstFrameTooBig) {
	aom_codec_iface_t *iface = aom_codec_av1_cx();
	aom_codec_enc_cfg_t cfg;
	EXPECT_EQ(AOM_CODEC_OK,
	aom_codec_enc_config_default(iface, &cfg, AOM_USAGE_REALTIME));
	cfg.g_w = 258;
	cfg.g_h = 256;
	cfg.g_forced_max_frame_width = 256;
	cfg.g_forced_max_frame_height = 256;
	aom_codec_ctx_t enc;
	EXPECT_EQ(AOM_CODEC_INVALID_PARAM, aom_codec_enc_init(&enc, iface, &cfg, 0));
	cfg.g_w = 256;
	cfg.g_h = 258;
	EXPECT_EQ(AOM_CODEC_INVALID_PARAM, aom_codec_enc_init(&enc, iface, &cfg, 0));
	cfg.g_w = 256;
	cfg.g_h = 256;
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_init(&enc, iface, &cfg, 0));
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_destroy(&enc));
	}

	TEST(EncodeForcedMaxFrameWidthHeight, SecondFrameTooBig) {
	// A buffer of gray samples. Large enough for 128x128 and 256x256, YUV 4:2:0.
	constexpr size_t kImageDataSize = 256 * 256 + 2 * 128 * 128;
	std::unique_ptr<unsigned char[]> img_data(new unsigned char[kImageDataSize]);
	ASSERT_NE(img_data, nullptr);
	memset(img_data.get(), 128, kImageDataSize);

	aom_codec_iface_t *iface = aom_codec_av1_cx();
	aom_codec_enc_cfg_t cfg;
	EXPECT_EQ(AOM_CODEC_OK,
	aom_codec_enc_config_default(iface, &cfg, AOM_USAGE_REALTIME));
	cfg.g_w = 128;
	cfg.g_h = 128;
	cfg.g_forced_max_frame_width = 255;
	cfg.g_forced_max_frame_height = 256;
	aom_codec_ctx_t enc;
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_enc_init(&enc, iface, &cfg, 0));

	aom_image_t img;
	EXPECT_EQ(&img,
	aom_img_wrap(&img, AOM_IMG_FMT_I420, 128, 128, 1, img_data.get()));
	EXPECT_EQ(AOM_CODEC_OK, aom_codec_encode(&enc, &img, 0, 1, 0));

	cfg.g_w = 256;
	cfg.g_h = 256;
	EXPECT_EQ(AOM_CODEC_INVALID_PARAM, aom_codec_enc_config_set(&enc, &cfg));

	EXPECT_EQ(AOM_CODEC_OK, aom_codec_destroy(&enc));
	}

	} // namespace