decode_test_driver.cc 4.37 KB
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/*
 *  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */
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#include "test/codec_factory.h"
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#include "test/decode_test_driver.h"
#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "test/register_state_check.h"
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#include "test/video_source.h"
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namespace libvpx_test {

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const char kVP8Name[] = "WebM Project VP8";

vpx_codec_err_t Decoder::PeekStream(const uint8_t *cxdata, size_t size,
                                    vpx_codec_stream_info_t *stream_info) {
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  return vpx_codec_peek_stream_info(CodecInterface(),
                                    cxdata, static_cast<unsigned int>(size),
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                                    stream_info);
}

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vpx_codec_err_t Decoder::DecodeFrame(const uint8_t *cxdata, size_t size) {
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  return DecodeFrame(cxdata, size, NULL);
}

vpx_codec_err_t Decoder::DecodeFrame(const uint8_t *cxdata, size_t size,
                                     void *user_priv) {
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  vpx_codec_err_t res_dec;
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  InitOnce();
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  API_REGISTER_STATE_CHECK(
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      res_dec = vpx_codec_decode(&decoder_,
                                 cxdata, static_cast<unsigned int>(size),
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                                 user_priv, 0));
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  return res_dec;
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}
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bool Decoder::IsVP8() const {
  const char *codec_name = GetDecoderName();
  return strncmp(kVP8Name, codec_name, sizeof(kVP8Name) - 1) == 0;
}

void DecoderTest::HandlePeekResult(Decoder *const decoder,
                                   CompressedVideoSource *video,
                                   const vpx_codec_err_t res_peek) {
  const bool is_vp8 = decoder->IsVP8();
  if (is_vp8) {
    /* Vp8's implementation of PeekStream returns an error if the frame you
     * pass it is not a keyframe, so we only expect VPX_CODEC_OK on the first
     * frame, which must be a keyframe. */
    if (video->frame_number() == 0)
      ASSERT_EQ(VPX_CODEC_OK, res_peek) << "Peek return failed: "
                                        << vpx_codec_err_to_string(res_peek);
  } else {
    /* The Vp9 implementation of PeekStream returns an error only if the
     * data passed to it isn't a valid Vp9 chunk. */
    ASSERT_EQ(VPX_CODEC_OK, res_peek) << "Peek return failed: "
                                      << vpx_codec_err_to_string(res_peek);
  }
}

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void DecoderTest::RunLoop(CompressedVideoSource *video,
                          const vpx_codec_dec_cfg_t &dec_cfg) {
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  Decoder* const decoder = codec_->CreateDecoder(dec_cfg, flags_, 0);
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  ASSERT_TRUE(decoder != NULL);
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  bool end_of_file = false;
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  // Decode frames.
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  for (video->Begin(); !::testing::Test::HasFailure() && !end_of_file;
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       video->Next()) {
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    PreDecodeFrameHook(*video, decoder);
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    vpx_codec_stream_info_t stream_info;
    stream_info.sz = sizeof(stream_info);
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    if (video->cxdata() != NULL) {
      const vpx_codec_err_t res_peek = decoder->PeekStream(video->cxdata(),
                                                           video->frame_size(),
                                                           &stream_info);
      HandlePeekResult(decoder, video, res_peek);
      ASSERT_FALSE(::testing::Test::HasFailure());

      vpx_codec_err_t res_dec = decoder->DecodeFrame(video->cxdata(),
                                                     video->frame_size());
      if (!HandleDecodeResult(res_dec, *video, decoder))
        break;
    } else {
      // Signal end of the file to the decoder.
      const vpx_codec_err_t res_dec = decoder->DecodeFrame(NULL, 0);
      ASSERT_EQ(VPX_CODEC_OK, res_dec) << decoder->DecodeError();
      end_of_file = true;
    }
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    DxDataIterator dec_iter = decoder->GetDxData();
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    const vpx_image_t *img = NULL;

    // Get decompressed data
    while ((img = dec_iter.Next()))
      DecompressedFrameHook(*img, video->frame_number());
  }
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  delete decoder;
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}
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void DecoderTest::RunLoop(CompressedVideoSource *video) {
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  vpx_codec_dec_cfg_t dec_cfg = vpx_codec_dec_cfg_t();
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  RunLoop(video, dec_cfg);
}

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void DecoderTest::set_cfg(const vpx_codec_dec_cfg_t &dec_cfg) {
  memcpy(&cfg_, &dec_cfg, sizeof(cfg_));
}

void DecoderTest::set_flags(const vpx_codec_flags_t flags) {
  flags_ = flags;
}

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}  // namespace libvpx_test