decode_test_driver.h 4.52 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.
 */

#ifndef TEST_DECODE_TEST_DRIVER_H_
#define TEST_DECODE_TEST_DRIVER_H_
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#include <cstring>
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#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "./vpx_config.h"
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#include "vpx/vpx_decoder.h"
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namespace libvpx_test {

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class CodecFactory;
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class CompressedVideoSource;
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// Provides an object to handle decoding output
class DxDataIterator {
 public:
  explicit DxDataIterator(vpx_codec_ctx_t *decoder)
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      : decoder_(decoder), iter_(NULL) {}
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  const vpx_image_t *Next() {
    return vpx_codec_get_frame(decoder_, &iter_);
  }

 private:
  vpx_codec_ctx_t  *decoder_;
  vpx_codec_iter_t  iter_;
};

// Provides a simplified interface to manage one video decoding.
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// Similar to Encoder class, the exact services should be added
// as more tests are added.
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class Decoder {
 public:
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  Decoder(vpx_codec_dec_cfg_t cfg, unsigned long deadline)
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      : cfg_(cfg), deadline_(deadline), init_done_(false) {
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    memset(&decoder_, 0, sizeof(decoder_));
  }

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  virtual ~Decoder() {
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    vpx_codec_destroy(&decoder_);
  }

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  vpx_codec_err_t PeekStream(const uint8_t *cxdata, size_t size,
                             vpx_codec_stream_info_t *stream_info);

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  vpx_codec_err_t DecodeFrame(const uint8_t *cxdata, size_t size);
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  vpx_codec_err_t DecodeFrame(const uint8_t *cxdata, size_t size,
                              void *user_priv);

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  DxDataIterator GetDxData() {
    return DxDataIterator(&decoder_);
  }

  void set_deadline(unsigned long deadline) {
    deadline_ = deadline;
  }

  void Control(int ctrl_id, int arg) {
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    InitOnce();
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    const vpx_codec_err_t res = vpx_codec_control_(&decoder_, ctrl_id, arg);
    ASSERT_EQ(VPX_CODEC_OK, res) << DecodeError();
  }

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  void Control(int ctrl_id, const void *arg) {
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    InitOnce();
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    const vpx_codec_err_t res = vpx_codec_control_(&decoder_, ctrl_id, arg);
    ASSERT_EQ(VPX_CODEC_OK, res) << DecodeError();
  }
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  const char* DecodeError() {
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    const char *detail = vpx_codec_error_detail(&decoder_);
    return detail ? detail : vpx_codec_error(&decoder_);
  }

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  // Passes the external frame buffer information to libvpx.
  vpx_codec_err_t SetFrameBufferFunctions(
      vpx_get_frame_buffer_cb_fn_t cb_get,
      vpx_release_frame_buffer_cb_fn_t cb_release, void *user_priv) {
    InitOnce();
    return vpx_codec_set_frame_buffer_functions(
        &decoder_, cb_get, cb_release, user_priv);
  }

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  const char* GetDecoderName() {
    return vpx_codec_iface_name(CodecInterface());
  }

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 protected:
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  virtual vpx_codec_iface_t* CodecInterface() const = 0;
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  void InitOnce() {
    if (!init_done_) {
      const vpx_codec_err_t res = vpx_codec_dec_init(&decoder_,
                                                     CodecInterface(),
                                                     &cfg_, 0);
      ASSERT_EQ(VPX_CODEC_OK, res) << DecodeError();
      init_done_ = true;
    }
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  }

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  vpx_codec_ctx_t     decoder_;
  vpx_codec_dec_cfg_t cfg_;
  unsigned int        deadline_;
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  bool                init_done_;
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};

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// Common test functionality for all Decoder tests.
class DecoderTest {
 public:
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  // Main decoding loop
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  virtual void RunLoop(CompressedVideoSource *video);
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  virtual void RunLoop(CompressedVideoSource *video,
                       const vpx_codec_dec_cfg_t &dec_cfg);
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  // Hook to be called before decompressing every frame.
  virtual void PreDecodeFrameHook(const CompressedVideoSource& video,
                                  Decoder *decoder) {}

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  // Hook to be called to handle decode result. Return true to continue.
  virtual bool HandleDecodeResult(const vpx_codec_err_t res_dec,
                                  const CompressedVideoSource& /* video */,
                                  Decoder *decoder) {
    EXPECT_EQ(VPX_CODEC_OK, res_dec) << decoder->DecodeError();
    return VPX_CODEC_OK == res_dec;
  }

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  // Hook to be called on every decompressed frame.
  virtual void DecompressedFrameHook(const vpx_image_t& img,
                                     const unsigned int frame_number) {}

 protected:
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  explicit DecoderTest(const CodecFactory *codec) : codec_(codec) {}
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  virtual ~DecoderTest() {}
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  const CodecFactory *codec_;
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};

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}  // namespace libvpx_test
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#endif  // TEST_DECODE_TEST_DRIVER_H_