test/decode_test_driver.h

   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 #ifndef TEST_DECODE_TEST_DRIVER_H_
  12 #define TEST_DECODE_TEST_DRIVER_H_
  13 #include <cstring>
  14 #include "third_party/googletest/src/include/gtest/gtest.h"
  15 #include "./vpx_config.h"
  16 #include "vpx/vpx_decoder.h"
  17
  18 namespace libvpx_test {
  19
  20 class CodecFactory;
  21 class CompressedVideoSource;
  22
  23 // Provides an object to handle decoding output
  24 class DxDataIterator {
  25  public:
  26   explicit DxDataIterator(vpx_codec_ctx_t *decoder)
  27       : decoder_(decoder), iter_(NULL) {}
  28
  29   const vpx_image_t *Next() {
  30     return vpx_codec_get_frame(decoder_, &iter_);
  31   }
  32
  33  private:
  34   vpx_codec_ctx_t  *decoder_;
  35   vpx_codec_iter_t  iter_;
  36 };
  37
  38 // Provides a simplified interface to manage one video decoding.
  39 // Similar to Encoder class, the exact services should be added
  40 // as more tests are added.
  41 class Decoder {
  42  public:
  43   Decoder(vpx_codec_dec_cfg_t cfg, unsigned long deadline)
  44       : cfg_(cfg), flags_(0), deadline_(deadline), init_done_(false) {
  45     memset(&decoder_, 0, sizeof(decoder_));
  46   }
  47
  48   Decoder(vpx_codec_dec_cfg_t cfg, const vpx_codec_flags_t flag,
  49           unsigned long deadline)  // NOLINT
  50       : cfg_(cfg), flags_(flag), deadline_(deadline), init_done_(false) {
  51     memset(&decoder_, 0, sizeof(decoder_));
  52   }
  53
  54   virtual ~Decoder() {
  55     vpx_codec_destroy(&decoder_);
  56   }
  57
  58   vpx_codec_err_t PeekStream(const uint8_t *cxdata, size_t size,
  59                              vpx_codec_stream_info_t *stream_info);
  60
  61   vpx_codec_err_t DecodeFrame(const uint8_t *cxdata, size_t size);
  62
  63   vpx_codec_err_t DecodeFrame(const uint8_t *cxdata, size_t size,
  64                               void *user_priv);
  65
  66   DxDataIterator GetDxData() {
  67     return DxDataIterator(&decoder_);
  68   }
  69
  70   void set_deadline(unsigned long deadline) {
  71     deadline_ = deadline;
  72   }
  73
  74   void Control(int ctrl_id, int arg) {
  75     Control(ctrl_id, arg, VPX_CODEC_OK);
  76   }
  77
  78   void Control(int ctrl_id, const void *arg) {
  79     InitOnce();
  80     const vpx_codec_err_t res = vpx_codec_control_(&decoder_, ctrl_id, arg);
  81     ASSERT_EQ(VPX_CODEC_OK, res) << DecodeError();
  82   }
  83
  84   void Control(int ctrl_id, int arg, vpx_codec_err_t expected_value) {
  85     InitOnce();
  86     const vpx_codec_err_t res = vpx_codec_control_(&decoder_, ctrl_id, arg);
  87     ASSERT_EQ(expected_value, res) << DecodeError();
  88   }
  89
  90   const char* DecodeError() {
  91     const char *detail = vpx_codec_error_detail(&decoder_);
  92     return detail ? detail : vpx_codec_error(&decoder_);
  93   }
  94
  95   // Passes the external frame buffer information to libvpx.
  96   vpx_codec_err_t SetFrameBufferFunctions(
  97       vpx_get_frame_buffer_cb_fn_t cb_get,
  98       vpx_release_frame_buffer_cb_fn_t cb_release, void *user_priv) {
  99     InitOnce();
 100     return vpx_codec_set_frame_buffer_functions(
 101         &decoder_, cb_get, cb_release, user_priv);
 102   }
 103
 104   const char* GetDecoderName() const {
 105     return vpx_codec_iface_name(CodecInterface());
 106   }
 107
 108   bool IsVP8() const;
 109
 110   vpx_codec_ctx_t * GetDecoder() {
 111     return &decoder_;
 112   }
 113
 114  protected:
 115   virtual vpx_codec_iface_t* CodecInterface() const = 0;
 116
 117   void InitOnce() {
 118     if (!init_done_) {
 119       const vpx_codec_err_t res = vpx_codec_dec_init(&decoder_,
 120                                                      CodecInterface(),
 121                                                      &cfg_, flags_);
 122       ASSERT_EQ(VPX_CODEC_OK, res) << DecodeError();
 123       init_done_ = true;
 124     }
 125   }
 126
 127   vpx_codec_ctx_t     decoder_;
 128   vpx_codec_dec_cfg_t cfg_;
 129   vpx_codec_flags_t   flags_;
 130   unsigned int        deadline_;
 131   bool                init_done_;
 132 };
 133
 134 // Common test functionality for all Decoder tests.
 135 class DecoderTest {
 136  public:
 137   // Main decoding loop
 138   virtual void RunLoop(CompressedVideoSource *video);
 139   virtual void RunLoop(CompressedVideoSource *video,
 140                        const vpx_codec_dec_cfg_t &dec_cfg);
 141
 142   virtual void set_cfg(const vpx_codec_dec_cfg_t &dec_cfg);
 143   virtual void set_flags(const vpx_codec_flags_t flags);
 144
 145   // Hook to be called before decompressing every frame.
 146   virtual void PreDecodeFrameHook(const CompressedVideoSource& /*video*/,
 147                                   Decoder* /*decoder*/) {}
 148
 149   // Hook to be called to handle decode result. Return true to continue.
 150   virtual bool HandleDecodeResult(const vpx_codec_err_t res_dec,
 151                                   const CompressedVideoSource& /*video*/,
 152                                   Decoder *decoder) {
 153     EXPECT_EQ(VPX_CODEC_OK, res_dec) << decoder->DecodeError();
 154     return VPX_CODEC_OK == res_dec;
 155   }
 156
 157   // Hook to be called on every decompressed frame.
 158   virtual void DecompressedFrameHook(const vpx_image_t& /*img*/,
 159                                      const unsigned int /*frame_number*/) {}
 160
 161   // Hook to be called on peek result
 162   virtual void HandlePeekResult(Decoder* const decoder,
 163                                 CompressedVideoSource *video,
 164                                 const vpx_codec_err_t res_peek);
 165
 166  protected:
 167   explicit DecoderTest(const CodecFactory *codec)
 168       : codec_(codec),
 169         cfg_(),
 170         flags_(0) {}
 171
 172   virtual ~DecoderTest() {}
 173
 174   const CodecFactory *codec_;
 175   vpx_codec_dec_cfg_t cfg_;
 176   vpx_codec_flags_t   flags_;
 177 };
 178
 179 }  // namespace libvpx_test
 180
 181 #endif  // TEST_DECODE_TEST_DRIVER_H_