libvpx: Pull from upstream

source/libvpx/test/y4m_video_source.h

Index: source/libvpx/test/y4m_video_source.h
===================================================================
--- source/libvpx/test/y4m_video_source.h	(revision 0)
+++ source/libvpx/test/y4m_video_source.h	(revision 0)
@@ -0,0 +1,105 @@
+/*
+ *  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_Y4M_VIDEO_SOURCE_H_
+#define TEST_Y4M_VIDEO_SOURCE_H_
+#include <string>
+
+#include "test/video_source.h"
+#include "./y4minput.h"
+
+namespace libvpx_test {
+
+// This class extends VideoSource to allow parsing of raw yv12
+// so that we can do actual file encodes.
+class Y4mVideoSource : public VideoSource {
+ public:
+  Y4mVideoSource(const std::string &file_name,
+                  unsigned int start, int limit)
+      : file_name_(file_name),
+        input_file_(NULL),
+        img_(new vpx_image_t()),
+        start_(start),
+        limit_(limit),
+        frame_(0),
+        framerate_numerator_(0),
+        framerate_denominator_(0),
+        y4m_() {
+  }
+
+  virtual ~Y4mVideoSource() {
+    vpx_img_free(img_.get());
+    y4m_input_close(&y4m_);
+    if (input_file_)
+      fclose(input_file_);
+  }
+
+  virtual void Begin() {
+    if (input_file_)
+      fclose(input_file_);
+    input_file_ = OpenTestDataFile(file_name_);
+    ASSERT_TRUE(input_file_ != NULL) << "Input file open failed. Filename: "
+        << file_name_;
+
+    y4m_input_open(&y4m_, input_file_, NULL, 0, 0);
+    framerate_numerator_ = y4m_.fps_n;
+    framerate_denominator_ = y4m_.fps_d;
+
+    frame_ = 0;
+    for (unsigned int i = 0; i < start_; i++) {
+        Next();
+    }
+
+    FillFrame();
+  }
+
+  virtual void Next() {
+    ++frame_;
+    FillFrame();
+  }
+
+  virtual vpx_image_t *img() const {
+    return (frame_ < limit_) ? img_.get() : NULL;
+  }
+
+  // Models a stream where Timebase = 1/FPS, so pts == frame.
+  virtual vpx_codec_pts_t pts() const { return frame_; }
+
+  virtual unsigned long duration() const { return 1; }
+
+  virtual vpx_rational_t timebase() const {
+    const vpx_rational_t t = { framerate_denominator_, framerate_numerator_ };
+    return t;
+  }
+
+  virtual unsigned int frame() const { return frame_; }
+
+  virtual unsigned int limit() const { return limit_; }
+
+  virtual void FillFrame() {
+    ASSERT_TRUE(input_file_ != NULL);
+    // Read a frame from input_file.
+    y4m_input_fetch_frame(&y4m_, input_file_, img_.get());
+  }
+
+ protected:
+  std::string file_name_;
+  FILE *input_file_;
+  testing::internal::scoped_ptr<vpx_image_t> img_;
+  unsigned int start_;
+  unsigned int limit_;
+  unsigned int frame_;
+  int framerate_numerator_;
+  int framerate_denominator_;
+  y4m_input y4m_;
+};
+
+}  // namespace libvpx_test
+
+#endif  // TEST_Y4M_VIDEO_SOURCE_H_