/* *  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 VPX_TEST_DECODE_TEST_DRIVER_H_#define VPX_TEST_DECODE_TEST_DRIVER_H_#include <cstring>#include "third_party/googletest/src/include/gtest/gtest.h"#include "./vpx_config.h"#include "vpx/vpx_decoder.h" namespace libvpx_test { class CodecFactory;class CompressedVideoSource; // Provides an object to handle decoding outputclass DxDataIterator { public:  explicit DxDataIterator(vpx_codec_ctx_t *decoder)      : decoder_(decoder), iter_(NULL) {}   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.// Similar to Encoder class, the exact services should be added// as more tests are added.class Decoder { public:  explicit Decoder(vpx_codec_dec_cfg_t cfg)      : cfg_(cfg), flags_(0), init_done_(false) {    memset(&decoder_, 0, sizeof(decoder_));  }   Decoder(vpx_codec_dec_cfg_t cfg, const vpx_codec_flags_t flag)      : cfg_(cfg), flags_(flag), init_done_(false) {    memset(&decoder_, 0, sizeof(decoder_));  }   virtual ~Decoder() { vpx_codec_destroy(&decoder_); }   vpx_codec_err_t PeekStream(const uint8_t *cxdata, size_t size,                             vpx_codec_stream_info_t *stream_info);   vpx_codec_err_t DecodeFrame(const uint8_t *cxdata, size_t size);   vpx_codec_err_t DecodeFrame(const uint8_t *cxdata, size_t size,                              void *user_priv);   DxDataIterator GetDxData() { return DxDataIterator(&decoder_); }   void Control(int ctrl_id, int arg) { Control(ctrl_id, arg, VPX_CODEC_OK); }   void Control(int ctrl_id, const void *arg) {    InitOnce();    const vpx_codec_err_t res = vpx_codec_control_(&decoder_, ctrl_id, arg);    ASSERT_EQ(VPX_CODEC_OK, res) << DecodeError();  }   void Control(int ctrl_id, int arg, vpx_codec_err_t expected_value) {    InitOnce();    const vpx_codec_err_t res = vpx_codec_control_(&decoder_, ctrl_id, arg);    ASSERT_EQ(expected_value, res) << DecodeError();  }   const char *DecodeError() {    const char *detail = vpx_codec_error_detail(&decoder_);    return detail ? detail : vpx_codec_error(&decoder_);  }   // 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);  }   const char *GetDecoderName() const {    return vpx_codec_iface_name(CodecInterface());  }   bool IsVP8() const;   vpx_codec_ctx_t *GetDecoder() { return &decoder_; }  protected:  virtual vpx_codec_iface_t *CodecInterface() const = 0;   void InitOnce() {    if (!init_done_) {      const vpx_codec_err_t res =          vpx_codec_dec_init(&decoder_, CodecInterface(), &cfg_, flags_);      ASSERT_EQ(VPX_CODEC_OK, res) << DecodeError();      init_done_ = true;    }  }   vpx_codec_ctx_t decoder_;  vpx_codec_dec_cfg_t cfg_;  vpx_codec_flags_t flags_;  bool init_done_;}; // Common test functionality for all Decoder tests.class DecoderTest { public:  // Main decoding loop  virtual void RunLoop(CompressedVideoSource *video);  virtual void RunLoop(CompressedVideoSource *video,                       const vpx_codec_dec_cfg_t &dec_cfg);   virtual void set_cfg(const vpx_codec_dec_cfg_t &dec_cfg);  virtual void set_flags(const vpx_codec_flags_t flags);   // Hook to be called before decompressing every frame.  virtual void PreDecodeFrameHook(const CompressedVideoSource & /*video*/,                                  Decoder * /*decoder*/) {}   // 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;  }   // Hook to be called on every decompressed frame.  virtual void DecompressedFrameHook(const vpx_image_t & /*img*/,                                     const unsigned int /*frame_number*/) {}   // Hook to be called on peek result  virtual void HandlePeekResult(Decoder *const decoder,                                CompressedVideoSource *video,                                const vpx_codec_err_t res_peek);  protected:  explicit DecoderTest(const CodecFactory *codec)      : codec_(codec), cfg_(), flags_(0) {}   virtual ~DecoderTest() {}   const CodecFactory *codec_;  vpx_codec_dec_cfg_t cfg_;  vpx_codec_flags_t flags_;}; }  // namespace libvpx_test #endif  // VPX_TEST_DECODE_TEST_DRIVER_H_