Plumb decoded video pixel format from GPU process to renderer.

media/gpu/v4l2_slice_video_decode_accelerator.cc

 // Copyright 2015 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/gpu/v4l2_slice_video_decode_accelerator.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <linux/videodev2.h>
 #include <poll.h>
@@ skipping 737 matching lines @@
 
   if (!gfx::Rect(coded_size_).Contains(gfx::Rect(visible_size_))) {
     LOG(ERROR) << "Got invalid adjusted coded size: " << coded_size_.ToString();
     return false;
   }
 
   DVLOGF(3) << "buffer_count=" << num_pictures
             << ", visible size=" << visible_size_.ToString()
             << ", coded size=" << coded_size_.ToString();
 
+  // With ALLOCATE mode the client can sample it as RGB and doesn't need to
+  // know the precise format.
+  VideoPixelFormat pixel_format =
+      (output_mode_ == Config::OutputMode::IMPORT)
+          ? V4L2Device::V4L2PixFmtToVideoPixelFormat(output_format_fourcc_)
+          : PIXEL_FORMAT_UNKNOWN;
+
   child_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&VideoDecodeAccelerator::Client::ProvidePictureBuffers,
-                 client_, num_pictures, 1, coded_size_,
+                 client_, num_pictures, pixel_format, 1, coded_size_,
                  device_->GetTextureTarget()));
 
   // Go into kAwaitingPictureBuffers to prevent us from doing any more decoding
   // or event handling while we are waiting for AssignPictureBuffers(). Not
   // having Pictures available would not have prevented us from making decoding
   // progress entirely e.g. in the case of H.264 where we could further decode
   // non-slice NALUs and could even get another resolution change before we were
   // done with this one. After we get the buffers, we'll go back into kIdle and
   // kick off further event processing, and eventually go back into kDecoding
   // once no more events are pending (if any).
@@ skipping 2012 matching lines @@
 }
 
 bool V4L2SliceVideoDecodeAccelerator::TryToSetupDecodeOnSeparateThread(
     const base::WeakPtr<Client>& decode_client,
     const scoped_refptr<base::SingleThreadTaskRunner>& decode_task_runner) {
   decode_client_ = decode_client_;
   decode_task_runner_ = decode_task_runner;
   return true;
 }
 
-media::VideoPixelFormat V4L2SliceVideoDecodeAccelerator::GetOutputFormat()
-    const {
-  return V4L2Device::V4L2PixFmtToVideoPixelFormat(output_format_fourcc_);
-}
-
 // static
 media::VideoDecodeAccelerator::SupportedProfiles
 V4L2SliceVideoDecodeAccelerator::GetSupportedProfiles() {
   scoped_refptr<V4L2Device> device = V4L2Device::Create(V4L2Device::kDecoder);
   if (!device)
     return SupportedProfiles();
 
   return device->GetSupportedDecodeProfiles(arraysize(supported_input_fourccs_),
                                             supported_input_fourccs_);
 }
 
 }  // namespace media