/* *  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_WEBM_VIDEO_SOURCE_H_#define VPX_TEST_WEBM_VIDEO_SOURCE_H_#include <cstdarg>#include <cstdio>#include <cstdlib>#include <new>#include <string>#include "../tools_common.h"#include "../webmdec.h"#include "test/video_source.h" namespace libvpx_test { // This class extends VideoSource to allow parsing of WebM files,// so that we can do actual file decodes.class WebMVideoSource : public CompressedVideoSource { public:  explicit WebMVideoSource(const std::string &file_name)      : file_name_(file_name), vpx_ctx_(new VpxInputContext()),        webm_ctx_(new WebmInputContext()), buf_(NULL), buf_sz_(0), frame_(0),        end_of_file_(false) {}   virtual ~WebMVideoSource() {    if (vpx_ctx_->file != NULL) fclose(vpx_ctx_->file);    webm_free(webm_ctx_);    delete vpx_ctx_;    delete webm_ctx_;  }   virtual void Init() {}   virtual void Begin() {    vpx_ctx_->file = OpenTestDataFile(file_name_);    ASSERT_TRUE(vpx_ctx_->file != NULL)        << "Input file open failed. Filename: " << file_name_;     ASSERT_EQ(file_is_webm(webm_ctx_, vpx_ctx_), 1) << "file is not WebM";     FillFrame();  }   virtual void Next() {    ++frame_;    FillFrame();  }   void FillFrame() {    ASSERT_TRUE(vpx_ctx_->file != NULL);    const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_);    ASSERT_GE(status, 0) << "webm_read_frame failed";    if (status == 1) {      end_of_file_ = true;    }  }   void SeekToNextKeyFrame() {    ASSERT_TRUE(vpx_ctx_->file != NULL);    do {      const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_);      ASSERT_GE(status, 0) << "webm_read_frame failed";      ++frame_;      if (status == 1) {        end_of_file_ = true;      }    } while (!webm_ctx_->is_key_frame && !end_of_file_);  }   virtual const uint8_t *cxdata() const { return end_of_file_ ? NULL : buf_; }  virtual size_t frame_size() const { return buf_sz_; }  virtual unsigned int frame_number() const { return frame_; }  protected:  std::string file_name_;  VpxInputContext *vpx_ctx_;  WebmInputContext *webm_ctx_;  uint8_t *buf_;  size_t buf_sz_;  unsigned int frame_;  bool end_of_file_;}; }  // namespace libvpx_test #endif  // VPX_TEST_WEBM_VIDEO_SOURCE_H_