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      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 "./vpx_config.h"
     12 #include "test/codec_factory.h"
     13 #include "test/encode_test_driver.h"
     14 #include "test/decode_test_driver.h"
     15 #include "test/register_state_check.h"
     16 #include "test/video_source.h"
     17 #include "third_party/googletest/src/include/gtest/gtest.h"
     18 
     19 namespace libvpx_test {
     20 void Encoder::EncodeFrame(VideoSource *video, const unsigned long frame_flags) {
     21   if (video->img())
     22     EncodeFrameInternal(*video, frame_flags);
     23   else
     24     Flush();
     25 
     26   // Handle twopass stats
     27   CxDataIterator iter = GetCxData();
     28 
     29   while (const vpx_codec_cx_pkt_t *pkt = iter.Next()) {
     30     if (pkt->kind != VPX_CODEC_STATS_PKT)
     31       continue;
     32 
     33     stats_->Append(*pkt);
     34   }
     35 }
     36 
     37 void Encoder::EncodeFrameInternal(const VideoSource &video,
     38                                   const unsigned long frame_flags) {
     39   vpx_codec_err_t res;
     40   const vpx_image_t *img = video.img();
     41 
     42   // Handle first frame initialization
     43   if (!encoder_.priv) {
     44     cfg_.g_w = img->d_w;
     45     cfg_.g_h = img->d_h;
     46     cfg_.g_timebase = video.timebase();
     47     cfg_.rc_twopass_stats_in = stats_->buf();
     48     res = vpx_codec_enc_init(&encoder_, CodecInterface(), &cfg_,
     49                              init_flags_);
     50     ASSERT_EQ(VPX_CODEC_OK, res) << EncoderError();
     51   }
     52 
     53   // Handle frame resizing
     54   if (cfg_.g_w != img->d_w || cfg_.g_h != img->d_h) {
     55     cfg_.g_w = img->d_w;
     56     cfg_.g_h = img->d_h;
     57     res = vpx_codec_enc_config_set(&encoder_, &cfg_);
     58     ASSERT_EQ(VPX_CODEC_OK, res) << EncoderError();
     59   }
     60 
     61   // Encode the frame
     62   REGISTER_STATE_CHECK(
     63       res = vpx_codec_encode(&encoder_,
     64                              video.img(), video.pts(), video.duration(),
     65                              frame_flags, deadline_));
     66   ASSERT_EQ(VPX_CODEC_OK, res) << EncoderError();
     67 }
     68 
     69 void Encoder::Flush() {
     70   const vpx_codec_err_t res = vpx_codec_encode(&encoder_, NULL, 0, 0, 0,
     71                                                deadline_);
     72   ASSERT_EQ(VPX_CODEC_OK, res) << EncoderError();
     73 }
     74 
     75 void EncoderTest::InitializeConfig() {
     76   const vpx_codec_err_t res = codec_->DefaultEncoderConfig(&cfg_, 0);
     77   ASSERT_EQ(VPX_CODEC_OK, res);
     78 }
     79 
     80 void EncoderTest::SetMode(TestMode mode) {
     81   switch (mode) {
     82     case kRealTime:
     83       deadline_ = VPX_DL_REALTIME;
     84       break;
     85 
     86     case kOnePassGood:
     87     case kTwoPassGood:
     88       deadline_ = VPX_DL_GOOD_QUALITY;
     89       break;
     90 
     91     case kOnePassBest:
     92     case kTwoPassBest:
     93       deadline_ = VPX_DL_BEST_QUALITY;
     94       break;
     95 
     96     default:
     97       ASSERT_TRUE(false) << "Unexpected mode " << mode;
     98   }
     99 
    100   if (mode == kTwoPassGood || mode == kTwoPassBest)
    101     passes_ = 2;
    102   else
    103     passes_ = 1;
    104 }
    105 // The function should return "true" most of the time, therefore no early
    106 // break-out is implemented within the match checking process.
    107 static bool compare_img(const vpx_image_t *img1,
    108                         const vpx_image_t *img2) {
    109   bool match = (img1->fmt == img2->fmt) &&
    110                (img1->d_w == img2->d_w) &&
    111                (img1->d_h == img2->d_h);
    112 
    113   const unsigned int width_y  = img1->d_w;
    114   const unsigned int height_y = img1->d_h;
    115   unsigned int i;
    116   for (i = 0; i < height_y; ++i)
    117     match = (memcmp(img1->planes[VPX_PLANE_Y] + i * img1->stride[VPX_PLANE_Y],
    118                     img2->planes[VPX_PLANE_Y] + i * img2->stride[VPX_PLANE_Y],
    119                     width_y) == 0) && match;
    120   const unsigned int width_uv  = (img1->d_w + 1) >> 1;
    121   const unsigned int height_uv = (img1->d_h + 1) >> 1;
    122   for (i = 0; i <  height_uv; ++i)
    123     match = (memcmp(img1->planes[VPX_PLANE_U] + i * img1->stride[VPX_PLANE_U],
    124                     img2->planes[VPX_PLANE_U] + i * img2->stride[VPX_PLANE_U],
    125                     width_uv) == 0) && match;
    126   for (i = 0; i < height_uv; ++i)
    127     match = (memcmp(img1->planes[VPX_PLANE_V] + i * img1->stride[VPX_PLANE_V],
    128                     img2->planes[VPX_PLANE_V] + i * img2->stride[VPX_PLANE_V],
    129                     width_uv) == 0) && match;
    130   return match;
    131 }
    132 
    133 void EncoderTest::MismatchHook(const vpx_image_t *img1,
    134                                const vpx_image_t *img2) {
    135   ASSERT_TRUE(0) << "Encode/Decode mismatch found";
    136 }
    137 
    138 void EncoderTest::RunLoop(VideoSource *video) {
    139   vpx_codec_dec_cfg_t dec_cfg = {0};
    140 
    141   stats_.Reset();
    142 
    143   ASSERT_TRUE(passes_ == 1 || passes_ == 2);
    144   for (unsigned int pass = 0; pass < passes_; pass++) {
    145     last_pts_ = 0;
    146 
    147     if (passes_ == 1)
    148       cfg_.g_pass = VPX_RC_ONE_PASS;
    149     else if (pass == 0)
    150       cfg_.g_pass = VPX_RC_FIRST_PASS;
    151     else
    152       cfg_.g_pass = VPX_RC_LAST_PASS;
    153 
    154     BeginPassHook(pass);
    155     Encoder* const encoder = codec_->CreateEncoder(cfg_, deadline_, init_flags_,
    156                                                    &stats_);
    157     ASSERT_TRUE(encoder != NULL);
    158     Decoder* const decoder = codec_->CreateDecoder(dec_cfg, 0);
    159     bool again;
    160     for (again = true, video->Begin(); again; video->Next()) {
    161       again = (video->img() != NULL);
    162 
    163       PreEncodeFrameHook(video);
    164       PreEncodeFrameHook(video, encoder);
    165       encoder->EncodeFrame(video, frame_flags_);
    166 
    167       CxDataIterator iter = encoder->GetCxData();
    168 
    169       bool has_cxdata = false;
    170       bool has_dxdata = false;
    171       while (const vpx_codec_cx_pkt_t *pkt = iter.Next()) {
    172         pkt = MutateEncoderOutputHook(pkt);
    173         again = true;
    174         switch (pkt->kind) {
    175           case VPX_CODEC_CX_FRAME_PKT:
    176             has_cxdata = true;
    177             if (decoder && DoDecode()) {
    178               vpx_codec_err_t res_dec = decoder->DecodeFrame(
    179                   (const uint8_t*)pkt->data.frame.buf, pkt->data.frame.sz);
    180               ASSERT_EQ(VPX_CODEC_OK, res_dec) << decoder->DecodeError();
    181               has_dxdata = true;
    182             }
    183             ASSERT_GE(pkt->data.frame.pts, last_pts_);
    184             last_pts_ = pkt->data.frame.pts;
    185             FramePktHook(pkt);
    186             break;
    187 
    188           case VPX_CODEC_PSNR_PKT:
    189             PSNRPktHook(pkt);
    190             break;
    191 
    192           default:
    193             break;
    194         }
    195       }
    196 
    197       if (has_dxdata && has_cxdata) {
    198         const vpx_image_t *img_enc = encoder->GetPreviewFrame();
    199         DxDataIterator dec_iter = decoder->GetDxData();
    200         const vpx_image_t *img_dec = dec_iter.Next();
    201         if (img_enc && img_dec) {
    202           const bool res = compare_img(img_enc, img_dec);
    203           if (!res) {  // Mismatch
    204             MismatchHook(img_enc, img_dec);
    205           }
    206         }
    207         if (img_dec)
    208           DecompressedFrameHook(*img_dec, video->pts());
    209       }
    210       if (!Continue())
    211         break;
    212     }
    213 
    214     EndPassHook();
    215 
    216     if (decoder)
    217       delete decoder;
    218     delete encoder;
    219 
    220     if (!Continue())
    221       break;
    222   }
    223 }
    224 
    225 }  // namespace libvpx_test
    226