16 bpp video stream capture, render and WebGL usage - Realsense R200 & SR300 support.

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 == 22,
                 "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 368 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_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 267 matching lines @@
     const gfx::Size& natural_size,
     uint8_t* data,
     size_t data_size,
     base::TimeDelta timestamp,
     base::SharedMemoryHandle handle,
     size_t data_offset) {
   DCHECK(IsStorageTypeMappable(storage_type));
 
   // TODO(miu): This function should support any pixel format.
   // http://crbug.com/555909
-  if (format != PIXEL_FORMAT_I420) {
-    LOG(DFATAL) << "Only PIXEL_FORMAT_I420 format supported: "
+  if (format != PIXEL_FORMAT_I420 && format != PIXEL_FORMAT_Y16) {
+    LOG(DFATAL) << "Only PIXEL_FORMAT_I420 and PIXEL_FORMAT_Y16 formats are "
+                   "supported: "
                 << VideoPixelFormatToString(format);
     return nullptr;
   }
 
   if (!IsValidConfig(format, storage_type, coded_size, visible_rect,
                      natural_size)) {
     LOG(DFATAL) << __FUNCTION__ << " Invalid config."
                 << ConfigToString(format, storage_type, coded_size,
                                   visible_rect, natural_size);
     return nullptr;
   }
 
   scoped_refptr<VideoFrame> frame;
   if (storage_type == STORAGE_SHMEM) {
     frame = new VideoFrame(format, storage_type, coded_size, visible_rect,
                            natural_size, timestamp, handle, data_offset);
   } else {
     frame = new VideoFrame(format, storage_type, coded_size, visible_rect,
                            natural_size, timestamp);
   }
+  if (format == PIXEL_FORMAT_Y16) {
+    // TODO(astojilj) Make this code generic for all and move format specifics
+    // to static methods.
+    DCHECK_EQ(NumPlanes(format), 1);
+    const size_t i = 0;
+    frame->strides_[i] = coded_size.width() * BytesPerElement(format, i);
+    frame->data_[i] = data;
+    return frame;
+  }
   frame->strides_[kYPlane] = coded_size.width();
   // TODO(miu): This always rounds widths down, whereas VideoFrame::RowBytes()
   // always rounds up.  This inconsistency must be resolved.  Perhaps a
   // CommonAlignment() check should be made in IsValidConfig()?
   // http://crbug.com/555909
   frame->strides_[kUPlane] = coded_size.width() / 2;
   frame->strides_[kVPlane] = coded_size.width() / 2;
   frame->data_[kYPlane] = data;
   frame->data_[kUPlane] = data + coded_size.GetArea();
   frame->data_[kVPlane] = data + (coded_size.GetArea() * 5 / 4);
@@ skipping 201 matching lines @@
 // 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:
@@ skipping 59 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