libvpx: Pull from upstream

source/libvpx/test/yuv_video_source.h

+/*
+ *  Copyright (c) 2014 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_YUV_VIDEO_SOURCE_H_
+#define TEST_YUV_VIDEO_SOURCE_H_
+
+#include <cstdio>
+#include <cstdlib>
+#include <string>
+
+#include "test/video_source.h"
+#include "vpx/vpx_image.h"
+
+namespace libvpx_test {
+
+// This class extends VideoSource to allow parsing of raw YUV
+// formats of various color sampling and bit-depths so that we can
+// do actual file encodes.
+class YUVVideoSource : public VideoSource {
+ public:
+  YUVVideoSource(const std::string &file_name, vpx_img_fmt format,
+                 unsigned int width, unsigned int height,
+                 int rate_numerator, int rate_denominator,
+                 unsigned int start, int limit)
+      : file_name_(file_name),
+        input_file_(NULL),
+        img_(NULL),
+        start_(start),
+        limit_(limit),
+        frame_(0),
+        width_(0),
+        height_(0),
+        format_(VPX_IMG_FMT_NONE),
+        framerate_numerator_(rate_numerator),
+        framerate_denominator_(rate_denominator) {
+    // This initializes format_, raw_size_, width_, height_ and allocates img.
+    SetSize(width, height, format);
+  }
+
+  virtual ~YUVVideoSource() {
+    vpx_img_free(img_);
+    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_;
+    if (start_)
+      fseek(input_file_, static_cast<unsigned>(raw_size_) * start_, SEEK_SET);
+
+    frame_ = start_;
+    FillFrame();
+  }
+
+  virtual void Next() {
+    ++frame_;
+    FillFrame();
+  }
+
+  virtual vpx_image_t *img() const { return (frame_ < limit_) ? img_ : 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 SetSize(unsigned int width, unsigned int height,
+                       vpx_img_fmt format) {
+    if (width != width_ || height != height_ || format != format_) {
+      vpx_img_free(img_);
+      img_ = vpx_img_alloc(NULL, format, width, height, 1);
+      ASSERT_TRUE(img_ != NULL);
+      width_ = width;
+      height_ = height;
+      format_ = format;
+      switch (format) {
+        case VPX_IMG_FMT_I420:
+          raw_size_ = width * height * 3 / 2;
+          break;
+        case VPX_IMG_FMT_I422:
+          raw_size_ = width * height * 2;
+          break;
+        case VPX_IMG_FMT_I440:
+          raw_size_ = width * height * 2;
+          break;
+        case VPX_IMG_FMT_I444:
+          raw_size_ = width * height * 3;
+          break;
+        case VPX_IMG_FMT_I42016:
+          raw_size_ = width * height * 3;
+          break;
+        case VPX_IMG_FMT_I42216:
+          raw_size_ = width * height * 4;
+          break;
+        case VPX_IMG_FMT_I44016:
+          raw_size_ = width * height * 4;
+          break;
+        case VPX_IMG_FMT_I44416:
+          raw_size_ = width * height * 6;
+          break;
+        default:
+          ASSERT_TRUE(0);
+      }
+    }
+  }
+
+  virtual void FillFrame() {
+    ASSERT_TRUE(input_file_ != NULL);
+    // Read a frame from input_file.
+    if (fread(img_->img_data, raw_size_, 1, input_file_) == 0) {
+      limit_ = frame_;
+    }
+  }
+
+ protected:
+  std::string file_name_;
+  FILE *input_file_;
+  vpx_image_t *img_;
+  size_t raw_size_;
+  unsigned int start_;
+  unsigned int limit_;
+  unsigned int frame_;
+  unsigned int width_;
+  unsigned int height_;
+  vpx_img_fmt format_;
+  int framerate_numerator_;
+  int framerate_denominator_;
+};
+
+}  // namespace libvpx_test
+
+#endif  // TEST_YUV_VIDEO_SOURCE_H_