media: Introduce Y8 and Y16 video pixel format

media/base/video_frame.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/video_frame.h"
 
 #include <algorithm>
 #include <climits>
 
 #include "base/atomic_sequence_num.h"
@@ skipping 107 matching lines @@
       natural_size.width() > limits::kMaxDimension ||
       natural_size.height() > limits::kMaxDimension)
     return false;
 
   // TODO(mcasas): Remove parameter |storage_type| when the opaque storage types
   // comply with the checks below. Right now we skip them.
   if (!IsStorageTypeMappable(storage_type))
     return true;
 
   // Make sure new formats are properly accounted for in the method.
-  static_assert(PIXEL_FORMAT_MAX == 21,
+  static_assert(PIXEL_FORMAT_MAX == 23,
                 "Added pixel format, please review IsValidConfig()");
 
   if (format == PIXEL_FORMAT_UNKNOWN) {
     return coded_size.IsEmpty() && visible_rect.IsEmpty() &&
            natural_size.IsEmpty();
   }
 
   // Check that software-allocated buffer formats are not empty.
   return !coded_size.IsEmpty() && !visible_rect.IsEmpty() &&
          !natural_size.IsEmpty();
@@ skipping 389 matching lines @@
 // static
 size_t VideoFrame::NumPlanes(VideoPixelFormat format) {
   switch (format) {
     case PIXEL_FORMAT_UYVY:
     case PIXEL_FORMAT_YUY2:
     case PIXEL_FORMAT_ARGB:
     case PIXEL_FORMAT_XRGB:
     case PIXEL_FORMAT_RGB24:
     case PIXEL_FORMAT_RGB32:
     case PIXEL_FORMAT_MJPEG:
+    case PIXEL_FORMAT_Y8:
+    case PIXEL_FORMAT_Y16:
       return 1;
     case PIXEL_FORMAT_NV12:
     case PIXEL_FORMAT_NV21:
     case PIXEL_FORMAT_MT21:
       return 2;
     case PIXEL_FORMAT_I420:
     case PIXEL_FORMAT_YV12:
     case PIXEL_FORMAT_YV16:
     case PIXEL_FORMAT_YV24:
     case PIXEL_FORMAT_YUV420P9:
@@ skipping 510 matching lines @@
           return gfx::Size(2, 2);
 
         case PIXEL_FORMAT_UNKNOWN:
         case PIXEL_FORMAT_UYVY:
         case PIXEL_FORMAT_YUY2:
         case PIXEL_FORMAT_ARGB:
         case PIXEL_FORMAT_XRGB:
         case PIXEL_FORMAT_RGB24:
         case PIXEL_FORMAT_RGB32:
         case PIXEL_FORMAT_MJPEG:
+        case PIXEL_FORMAT_Y8:
+        case PIXEL_FORMAT_Y16:
           break;
       }
   }
   NOTREACHED();
   return gfx::Size();
 }
 
 // static
 int VideoFrame::BytesPerElement(VideoPixelFormat format, size_t plane) {
   DCHECK(IsValidPlane(plane, format));
   switch (format) {
     case PIXEL_FORMAT_ARGB:
     case PIXEL_FORMAT_XRGB:
     case PIXEL_FORMAT_RGB32:
       return 4;
     case PIXEL_FORMAT_RGB24:
       return 3;
+    case PIXEL_FORMAT_Y16:
     case PIXEL_FORMAT_UYVY:
     case PIXEL_FORMAT_YUY2:
     case PIXEL_FORMAT_YUV420P9:
     case PIXEL_FORMAT_YUV422P9:
     case PIXEL_FORMAT_YUV444P9:
     case PIXEL_FORMAT_YUV420P10:
     case PIXEL_FORMAT_YUV422P10:
     case PIXEL_FORMAT_YUV444P10:
       return 2;
     case PIXEL_FORMAT_NV12:
     case PIXEL_FORMAT_NV21:
     case PIXEL_FORMAT_MT21: {
       static const int bytes_per_element[] = {1, 2};
       DCHECK_LT(plane, arraysize(bytes_per_element));
       return bytes_per_element[plane];
     }
     case PIXEL_FORMAT_YV12:
     case PIXEL_FORMAT_I420:
     case PIXEL_FORMAT_YV16:
     case PIXEL_FORMAT_YV12A:
     case PIXEL_FORMAT_YV24:
+    case PIXEL_FORMAT_Y8:
       return 1;
     case PIXEL_FORMAT_MJPEG:
       return 0;
     case PIXEL_FORMAT_UNKNOWN:
       break;
   }
   NOTREACHED();
   return 0;
 }
 
@@ skipping 38 matching lines @@
   if (zero_initialize_memory)
     memset(data, 0, data_size);
 
   for (size_t plane = 0; plane < NumPlanes(format_); ++plane)
     data_[plane] = data + offset[plane];
 
   AddDestructionObserver(base::Bind(&base::AlignedFree, data));
 }
 
 }  // namespace media