1 /*
2  *  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #include <memory>
12 #include <string>
13 
14 #include "third_party/googletest/src/include/gtest/gtest.h"
15 
16 #include "./vpx_config.h"
17 #include "test/codec_factory.h"
18 #include "test/decode_test_driver.h"
19 #include "test/encode_test_driver.h"
20 #include "test/register_state_check.h"
21 #include "test/video_source.h"
22 
23 namespace libvpx_test {
InitEncoder(VideoSource * video)24 void Encoder::InitEncoder(VideoSource *video) {
25   vpx_codec_err_t res;
26   const vpx_image_t *img = video->img();
27 
28   if (video->img() && !encoder_.priv) {
29     cfg_.g_w = img->d_w;
30     cfg_.g_h = img->d_h;
31     cfg_.g_timebase = video->timebase();
32     cfg_.rc_twopass_stats_in = stats_->buf();
33 
34     res = vpx_codec_enc_init(&encoder_, CodecInterface(), &cfg_, init_flags_);
35     ASSERT_EQ(VPX_CODEC_OK, res) << EncoderError();
36 
37 #if CONFIG_VP9_ENCODER
38     if (CodecInterface() == &vpx_codec_vp9_cx_algo) {
39       // Default to 1 tile column for VP9.
40       const int log2_tile_columns = 0;
41       res = vpx_codec_control_(&encoder_, VP9E_SET_TILE_COLUMNS,
42                                log2_tile_columns);
43       ASSERT_EQ(VPX_CODEC_OK, res) << EncoderError();
44     } else
45 #endif
46     {
47 #if CONFIG_VP8_ENCODER
48       ASSERT_EQ(&vpx_codec_vp8_cx_algo, CodecInterface())
49           << "Unknown Codec Interface";
50 #endif
51     }
52   }
53 }
54 
EncodeFrame(VideoSource * video,const unsigned long frame_flags)55 void Encoder::EncodeFrame(VideoSource *video, const unsigned long frame_flags) {
56   if (video->img()) {
57     EncodeFrameInternal(*video, frame_flags);
58   } else {
59     Flush();
60   }
61 
62   // Handle twopass stats
63   CxDataIterator iter = GetCxData();
64 
65   while (const vpx_codec_cx_pkt_t *pkt = iter.Next()) {
66     if (pkt->kind != VPX_CODEC_STATS_PKT) continue;
67 
68     stats_->Append(*pkt);
69   }
70 }
71 
EncodeFrameInternal(const VideoSource & video,const unsigned long frame_flags)72 void Encoder::EncodeFrameInternal(const VideoSource &video,
73                                   const unsigned long frame_flags) {
74   vpx_codec_err_t res;
75   const vpx_image_t *img = video.img();
76 
77   // Handle frame resizing
78   if (cfg_.g_w != img->d_w || cfg_.g_h != img->d_h) {
79     cfg_.g_w = img->d_w;
80     cfg_.g_h = img->d_h;
81     res = vpx_codec_enc_config_set(&encoder_, &cfg_);
82     ASSERT_EQ(VPX_CODEC_OK, res) << EncoderError();
83   }
84 
85   // Encode the frame
86   API_REGISTER_STATE_CHECK(res = vpx_codec_encode(&encoder_, img, video.pts(),
87                                                   video.duration(), frame_flags,
88                                                   deadline_));
89   ASSERT_EQ(VPX_CODEC_OK, res) << EncoderError();
90 }
91 
Flush()92 void Encoder::Flush() {
93   const vpx_codec_err_t res =
94       vpx_codec_encode(&encoder_, NULL, 0, 0, 0, deadline_);
95   if (!encoder_.priv)
96     ASSERT_EQ(VPX_CODEC_ERROR, res) << EncoderError();
97   else
98     ASSERT_EQ(VPX_CODEC_OK, res) << EncoderError();
99 }
100 
InitializeConfig()101 void EncoderTest::InitializeConfig() {
102   const vpx_codec_err_t res = codec_->DefaultEncoderConfig(&cfg_, 0);
103   dec_cfg_ = vpx_codec_dec_cfg_t();
104   ASSERT_EQ(VPX_CODEC_OK, res);
105 }
106 
SetMode(TestMode mode)107 void EncoderTest::SetMode(TestMode mode) {
108   switch (mode) {
109     case kRealTime: deadline_ = VPX_DL_REALTIME; break;
110 
111     case kOnePassGood:
112     case kTwoPassGood: deadline_ = VPX_DL_GOOD_QUALITY; break;
113 
114     case kOnePassBest:
115     case kTwoPassBest: deadline_ = VPX_DL_BEST_QUALITY; break;
116 
117     default: ASSERT_TRUE(false) << "Unexpected mode " << mode;
118   }
119 
120   if (mode == kTwoPassGood || mode == kTwoPassBest) {
121     passes_ = 2;
122   } else {
123     passes_ = 1;
124   }
125 }
126 // The function should return "true" most of the time, therefore no early
127 // break-out is implemented within the match checking process.
compare_img(const vpx_image_t * img1,const vpx_image_t * img2)128 static bool compare_img(const vpx_image_t *img1, const vpx_image_t *img2) {
129   bool match = (img1->fmt == img2->fmt) && (img1->cs == img2->cs) &&
130                (img1->d_w == img2->d_w) && (img1->d_h == img2->d_h);
131 
132   if (!match) return false;
133 
134   const unsigned int width_y = img1->d_w;
135   const unsigned int height_y = img1->d_h;
136   unsigned int i;
137   for (i = 0; i < height_y; ++i) {
138     match = (memcmp(img1->planes[VPX_PLANE_Y] + i * img1->stride[VPX_PLANE_Y],
139                     img2->planes[VPX_PLANE_Y] + i * img2->stride[VPX_PLANE_Y],
140                     width_y) == 0) &&
141             match;
142   }
143   const unsigned int width_uv = (img1->d_w + 1) >> 1;
144   const unsigned int height_uv = (img1->d_h + 1) >> 1;
145   for (i = 0; i < height_uv; ++i) {
146     match = (memcmp(img1->planes[VPX_PLANE_U] + i * img1->stride[VPX_PLANE_U],
147                     img2->planes[VPX_PLANE_U] + i * img2->stride[VPX_PLANE_U],
148                     width_uv) == 0) &&
149             match;
150   }
151   for (i = 0; i < height_uv; ++i) {
152     match = (memcmp(img1->planes[VPX_PLANE_V] + i * img1->stride[VPX_PLANE_V],
153                     img2->planes[VPX_PLANE_V] + i * img2->stride[VPX_PLANE_V],
154                     width_uv) == 0) &&
155             match;
156   }
157   return match;
158 }
159 
MismatchHook(const vpx_image_t *,const vpx_image_t *)160 void EncoderTest::MismatchHook(const vpx_image_t * /*img1*/,
161                                const vpx_image_t * /*img2*/) {
162   ASSERT_TRUE(0) << "Encode/Decode mismatch found";
163 }
164 
RunLoop(VideoSource * video)165 void EncoderTest::RunLoop(VideoSource *video) {
166   vpx_codec_dec_cfg_t dec_cfg = vpx_codec_dec_cfg_t();
167 
168   stats_.Reset();
169 
170   ASSERT_TRUE(passes_ == 1 || passes_ == 2);
171   for (unsigned int pass = 0; pass < passes_; pass++) {
172     last_pts_ = 0;
173 
174     if (passes_ == 1) {
175       cfg_.g_pass = VPX_RC_ONE_PASS;
176     } else if (pass == 0) {
177       cfg_.g_pass = VPX_RC_FIRST_PASS;
178     } else {
179       cfg_.g_pass = VPX_RC_LAST_PASS;
180     }
181 
182     BeginPassHook(pass);
183     std::unique_ptr<Encoder> encoder(
184         codec_->CreateEncoder(cfg_, deadline_, init_flags_, &stats_));
185     ASSERT_TRUE(encoder.get() != NULL);
186 
187     ASSERT_NO_FATAL_FAILURE(video->Begin());
188     encoder->InitEncoder(video);
189     ASSERT_FALSE(::testing::Test::HasFatalFailure());
190 
191     unsigned long dec_init_flags = 0;  // NOLINT
192     // Use fragment decoder if encoder outputs partitions.
193     // NOTE: fragment decoder and partition encoder are only supported by VP8.
194     if (init_flags_ & VPX_CODEC_USE_OUTPUT_PARTITION) {
195       dec_init_flags |= VPX_CODEC_USE_INPUT_FRAGMENTS;
196     }
197     std::unique_ptr<Decoder> decoder(
198         codec_->CreateDecoder(dec_cfg, dec_init_flags));
199     bool again;
200     for (again = true; again; video->Next()) {
201       again = (video->img() != NULL);
202 
203       PreEncodeFrameHook(video);
204       PreEncodeFrameHook(video, encoder.get());
205       encoder->EncodeFrame(video, frame_flags_);
206 
207       PostEncodeFrameHook(encoder.get());
208 
209       CxDataIterator iter = encoder->GetCxData();
210 
211       bool has_cxdata = false;
212       bool has_dxdata = false;
213       while (const vpx_codec_cx_pkt_t *pkt = iter.Next()) {
214         pkt = MutateEncoderOutputHook(pkt);
215         again = true;
216         switch (pkt->kind) {
217           case VPX_CODEC_CX_FRAME_PKT:
218             has_cxdata = true;
219             if (decoder.get() != NULL && DoDecode()) {
220               PreDecodeFrameHook(video, decoder.get());
221               vpx_codec_err_t res_dec = decoder->DecodeFrame(
222                   (const uint8_t *)pkt->data.frame.buf, pkt->data.frame.sz);
223 
224               if (!HandleDecodeResult(res_dec, *video, decoder.get())) break;
225 
226               has_dxdata = true;
227             }
228             ASSERT_GE(pkt->data.frame.pts, last_pts_);
229             last_pts_ = pkt->data.frame.pts;
230             FramePktHook(pkt);
231             break;
232 
233           case VPX_CODEC_PSNR_PKT: PSNRPktHook(pkt); break;
234 
235           case VPX_CODEC_STATS_PKT: StatsPktHook(pkt); break;
236 
237           default: break;
238         }
239       }
240 
241       // Flush the decoder when there are no more fragments.
242       if ((init_flags_ & VPX_CODEC_USE_OUTPUT_PARTITION) && has_dxdata) {
243         const vpx_codec_err_t res_dec = decoder->DecodeFrame(NULL, 0);
244         if (!HandleDecodeResult(res_dec, *video, decoder.get())) break;
245       }
246 
247       if (has_dxdata && has_cxdata) {
248         const vpx_image_t *img_enc = encoder->GetPreviewFrame();
249         DxDataIterator dec_iter = decoder->GetDxData();
250         const vpx_image_t *img_dec = dec_iter.Next();
251         if (img_enc && img_dec) {
252           const bool res = compare_img(img_enc, img_dec);
253           if (!res) {  // Mismatch
254             MismatchHook(img_enc, img_dec);
255           }
256         }
257         if (img_dec) DecompressedFrameHook(*img_dec, video->pts());
258       }
259       if (!Continue()) break;
260     }
261 
262     EndPassHook();
263 
264     if (!Continue()) break;
265   }
266 }
267 
268 }  // namespace libvpx_test
269