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      1 /*
      2  *  Copyright (c) 2013 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 <cstdio>
     12 #include <cstdlib>
     13 #include <string>
     14 #include "third_party/googletest/src/include/gtest/gtest.h"
     15 #include "test/codec_factory.h"
     16 #include "test/encode_test_driver.h"
     17 #include "test/i420_video_source.h"
     18 #include "test/util.h"
     19 #include "test/md5_helper.h"
     20 #include "vpx_mem/vpx_mem.h"
     21 
     22 namespace {
     23 class TileIndependenceTest : public ::libvpx_test::EncoderTest,
     24                              public ::libvpx_test::CodecTestWithParam<int> {
     25  protected:
     26   TileIndependenceTest()
     27       : EncoderTest(GET_PARAM(0)), md5_fw_order_(), md5_inv_order_(),
     28         n_tiles_(GET_PARAM(1)) {
     29     init_flags_ = VPX_CODEC_USE_PSNR;
     30     vpx_codec_dec_cfg_t cfg = vpx_codec_dec_cfg_t();
     31     cfg.w = 704;
     32     cfg.h = 144;
     33     cfg.threads = 1;
     34     fw_dec_ = codec_->CreateDecoder(cfg, 0);
     35     inv_dec_ = codec_->CreateDecoder(cfg, 0);
     36     inv_dec_->Control(VP9_INVERT_TILE_DECODE_ORDER, 1);
     37   }
     38 
     39   virtual ~TileIndependenceTest() {
     40     delete fw_dec_;
     41     delete inv_dec_;
     42   }
     43 
     44   virtual void SetUp() {
     45     InitializeConfig();
     46     SetMode(libvpx_test::kTwoPassGood);
     47   }
     48 
     49   virtual void PreEncodeFrameHook(libvpx_test::VideoSource *video,
     50                                   libvpx_test::Encoder *encoder) {
     51     if (video->frame() == 1) {
     52       encoder->Control(VP9E_SET_TILE_COLUMNS, n_tiles_);
     53     }
     54   }
     55 
     56   void UpdateMD5(::libvpx_test::Decoder *dec, const vpx_codec_cx_pkt_t *pkt,
     57                  ::libvpx_test::MD5 *md5) {
     58     const vpx_codec_err_t res = dec->DecodeFrame(
     59         reinterpret_cast<uint8_t *>(pkt->data.frame.buf), pkt->data.frame.sz);
     60     if (res != VPX_CODEC_OK) {
     61       abort_ = true;
     62       ASSERT_EQ(VPX_CODEC_OK, res);
     63     }
     64     const vpx_image_t *img = dec->GetDxData().Next();
     65     md5->Add(img);
     66   }
     67 
     68   virtual void FramePktHook(const vpx_codec_cx_pkt_t *pkt) {
     69     UpdateMD5(fw_dec_, pkt, &md5_fw_order_);
     70     UpdateMD5(inv_dec_, pkt, &md5_inv_order_);
     71   }
     72 
     73   ::libvpx_test::MD5 md5_fw_order_, md5_inv_order_;
     74   ::libvpx_test::Decoder *fw_dec_, *inv_dec_;
     75 
     76  private:
     77   int n_tiles_;
     78 };
     79 
     80 // run an encode with 2 or 4 tiles, and do the decode both in normal and
     81 // inverted tile ordering. Ensure that the MD5 of the output in both cases
     82 // is identical. If so, tiles are considered independent and the test passes.
     83 TEST_P(TileIndependenceTest, MD5Match) {
     84   const vpx_rational timebase = { 33333333, 1000000000 };
     85   cfg_.g_timebase = timebase;
     86   cfg_.rc_target_bitrate = 500;
     87   cfg_.g_lag_in_frames = 25;
     88   cfg_.rc_end_usage = VPX_VBR;
     89 
     90   libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 704, 144,
     91                                      timebase.den, timebase.num, 0, 30);
     92   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
     93 
     94   const char *md5_fw_str = md5_fw_order_.Get();
     95   const char *md5_inv_str = md5_inv_order_.Get();
     96 
     97   // could use ASSERT_EQ(!memcmp(.., .., 16) here, but this gives nicer
     98   // output if it fails. Not sure if it's helpful since it's really just
     99   // a MD5...
    100   ASSERT_STREQ(md5_fw_str, md5_inv_str);
    101 }
    102 
    103 VP9_INSTANTIATE_TEST_CASE(TileIndependenceTest, ::testing::Range(0, 2, 1));
    104 }  // namespace
    105