MEDIASUBTYPE_RGB32 support for Windows

media/video/capture/win/sink_input_pin_win.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/video/capture/win/sink_input_pin_win.h"
 
 #include <cstring>
 
 // Avoid including strsafe.h via dshow as it will cause build warnings.
 #define NO_DSHOW_STRSAFE
@@ skipping 72 matching lines @@
     }
     case 2: {
       pvi->bmiHeader.biCompression = BI_RGB;
       pvi->bmiHeader.biBitCount = 24;
       pvi->bmiHeader.biWidth = requested_info_header_.biWidth;
       pvi->bmiHeader.biHeight = requested_info_header_.biHeight;
       pvi->bmiHeader.biSizeImage = GetArea(requested_info_header_) * 3;
       media_type->subtype = MEDIASUBTYPE_RGB24;
       break;
     }
+    case 3: {
+      pvi->bmiHeader.biCompression = BI_RGB;
+      pvi->bmiHeader.biBitCount = 32;
+      pvi->bmiHeader.biWidth = requested_info_header_.biWidth;
+      pvi->bmiHeader.biHeight = requested_info_header_.biHeight;
+      pvi->bmiHeader.biSizeImage = GetArea(requested_info_header_) * 4;
+      media_type->subtype = MEDIASUBTYPE_RGB32;
+      break;
+    }
     default:
       return false;
   }
 
   media_type->bFixedSizeSamples = TRUE;
   media_type->lSampleSize = pvi->bmiHeader.biSizeImage;
   return true;
 }
 
 bool SinkInputPin::IsMediaTypeValid(const AM_MEDIA_TYPE* media_type) {
@@ skipping 17 matching lines @@
                                        abs(pvi->bmiHeader.biHeight));
   if (pvi->AvgTimePerFrame > 0) {
     resulting_format_.frame_rate =
         static_cast<int>(kSecondsToReferenceTime / pvi->AvgTimePerFrame);
   } else {
     resulting_format_.frame_rate = requested_frame_rate_;
   }
   if (sub_type == kMediaSubTypeI420 &&
       pvi->bmiHeader.biCompression == MAKEFOURCC('I', '4', '2', '0')) {
     resulting_format_.pixel_format = PIXEL_FORMAT_I420;
-    return true;  // This format is acceptable.
+    return true;
   }
   if (sub_type == MEDIASUBTYPE_YUY2 &&
       pvi->bmiHeader.biCompression == MAKEFOURCC('Y', 'U', 'Y', '2')) {
     resulting_format_.pixel_format = PIXEL_FORMAT_YUY2;
-    return true;  // This format is acceptable.
+    return true;
   }
   if (sub_type == MEDIASUBTYPE_MJPG &&
       pvi->bmiHeader.biCompression == MAKEFOURCC('M', 'J', 'P', 'G')) {
     resulting_format_.pixel_format = PIXEL_FORMAT_MJPEG;
-    return true;  // This format is acceptable.
+    return true;
   }
   if (sub_type == MEDIASUBTYPE_RGB24 &&
       pvi->bmiHeader.biCompression == BI_RGB) {
     resulting_format_.pixel_format = PIXEL_FORMAT_RGB24;
-    return true;  // This format is acceptable.
+    return true;
+  }
+  if (sub_type == MEDIASUBTYPE_RGB32 &&
+      pvi->bmiHeader.biCompression == BI_RGB) {
+    resulting_format_.pixel_format = PIXEL_FORMAT_RGB32;
+    return true;
   }
   return false;
 }
 
 HRESULT SinkInputPin::Receive(IMediaSample* sample) {
   const int length = sample->GetActualDataLength();
   uint8* buffer = NULL;
 
   if (length <= 0) {
     DLOG(WARNING) << "Media sample length is 0 or less.";
@@ skipping 17 matching lines @@
   resulting_format_.frame_size.SetSize(0, 0);
   resulting_format_.frame_rate = 0;
   resulting_format_.pixel_format = PIXEL_FORMAT_UNKNOWN;
 }
 
 const VideoCaptureFormat& SinkInputPin::ResultingFormat() {
   return resulting_format_;
 }
 
 }  // namespace media