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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 "third_party/googletest/src/include/gtest/gtest.h"
     12 
     13 #include "test/codec_factory.h"
     14 #include "test/decode_test_driver.h"
     15 #include "test/register_state_check.h"
     16 #include "test/video_source.h"
     17 
     18 namespace libvpx_test {
     19 
     20 const char kVP8Name[] = "WebM Project VP8";
     21 
     22 vpx_codec_err_t Decoder::PeekStream(const uint8_t *cxdata, size_t size,
     23                                     vpx_codec_stream_info_t *stream_info) {
     24   return vpx_codec_peek_stream_info(
     25       CodecInterface(), cxdata, static_cast<unsigned int>(size), stream_info);
     26 }
     27 
     28 vpx_codec_err_t Decoder::DecodeFrame(const uint8_t *cxdata, size_t size) {
     29   return DecodeFrame(cxdata, size, NULL);
     30 }
     31 
     32 vpx_codec_err_t Decoder::DecodeFrame(const uint8_t *cxdata, size_t size,
     33                                      void *user_priv) {
     34   vpx_codec_err_t res_dec;
     35   InitOnce();
     36   API_REGISTER_STATE_CHECK(
     37       res_dec = vpx_codec_decode(
     38           &decoder_, cxdata, static_cast<unsigned int>(size), user_priv, 0));
     39   return res_dec;
     40 }
     41 
     42 bool Decoder::IsVP8() const {
     43   const char *codec_name = GetDecoderName();
     44   return strncmp(kVP8Name, codec_name, sizeof(kVP8Name) - 1) == 0;
     45 }
     46 
     47 void DecoderTest::HandlePeekResult(Decoder *const decoder,
     48                                    CompressedVideoSource *video,
     49                                    const vpx_codec_err_t res_peek) {
     50   const bool is_vp8 = decoder->IsVP8();
     51   if (is_vp8) {
     52     /* Vp8's implementation of PeekStream returns an error if the frame you
     53      * pass it is not a keyframe, so we only expect VPX_CODEC_OK on the first
     54      * frame, which must be a keyframe. */
     55     if (video->frame_number() == 0)
     56       ASSERT_EQ(VPX_CODEC_OK, res_peek)
     57           << "Peek return failed: " << vpx_codec_err_to_string(res_peek);
     58   } else {
     59     /* The Vp9 implementation of PeekStream returns an error only if the
     60      * data passed to it isn't a valid Vp9 chunk. */
     61     ASSERT_EQ(VPX_CODEC_OK, res_peek)
     62         << "Peek return failed: " << vpx_codec_err_to_string(res_peek);
     63   }
     64 }
     65 
     66 void DecoderTest::RunLoop(CompressedVideoSource *video,
     67                           const vpx_codec_dec_cfg_t &dec_cfg) {
     68   Decoder *const decoder = codec_->CreateDecoder(dec_cfg, flags_);
     69   ASSERT_TRUE(decoder != NULL);
     70   bool end_of_file = false;
     71 
     72   // Decode frames.
     73   for (video->Begin(); !::testing::Test::HasFailure() && !end_of_file;
     74        video->Next()) {
     75     PreDecodeFrameHook(*video, decoder);
     76 
     77     vpx_codec_stream_info_t stream_info;
     78     stream_info.sz = sizeof(stream_info);
     79 
     80     if (video->cxdata() != NULL) {
     81       const vpx_codec_err_t res_peek = decoder->PeekStream(
     82           video->cxdata(), video->frame_size(), &stream_info);
     83       HandlePeekResult(decoder, video, res_peek);
     84       ASSERT_FALSE(::testing::Test::HasFailure());
     85 
     86       vpx_codec_err_t res_dec =
     87           decoder->DecodeFrame(video->cxdata(), video->frame_size());
     88       if (!HandleDecodeResult(res_dec, *video, decoder)) break;
     89     } else {
     90       // Signal end of the file to the decoder.
     91       const vpx_codec_err_t res_dec = decoder->DecodeFrame(NULL, 0);
     92       ASSERT_EQ(VPX_CODEC_OK, res_dec) << decoder->DecodeError();
     93       end_of_file = true;
     94     }
     95 
     96     DxDataIterator dec_iter = decoder->GetDxData();
     97     const vpx_image_t *img = NULL;
     98 
     99     // Get decompressed data
    100     while ((img = dec_iter.Next())) {
    101       DecompressedFrameHook(*img, video->frame_number());
    102     }
    103   }
    104   delete decoder;
    105 }
    106 
    107 void DecoderTest::RunLoop(CompressedVideoSource *video) {
    108   vpx_codec_dec_cfg_t dec_cfg = vpx_codec_dec_cfg_t();
    109   RunLoop(video, dec_cfg);
    110 }
    111 
    112 void DecoderTest::set_cfg(const vpx_codec_dec_cfg_t &dec_cfg) {
    113   memcpy(&cfg_, &dec_cfg, sizeof(cfg_));
    114 }
    115 
    116 void DecoderTest::set_flags(const vpx_codec_flags_t flags) { flags_ = flags; }
    117 
    118 }  // namespace libvpx_test
    119