RtcVideoDecoder: fall back to SW decode for unsupported profiles/resolutions

content/renderer/media/rtc_video_decoder.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_H_
 #define CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 159 matching lines @@
   void RecordBufferData(const BufferData& buffer_data);
   // Gets the buffer metadata from |input_buffer_data_|.
   void GetBufferData(int32 bitstream_buffer_id, uint32_t* timestamp);
 
   // Records the result of InitDecode to UMA and returns |status|.
   int32_t RecordInitDecodeUMA(int32_t status);
 
   // Assert the contract that this class is operated on the right thread.
   void DCheckGpuVideoAcceleratorFactoriesTaskRunnerIsCurrent() const;
 
+  // Query factories_ whether |profile| is supported and return true is so,
+  // false otherwise. If true, also set resolution limits for |profile|
+  // in min/max_resolution_.
+  bool IsProfileSupported(media::VideoCodecProfile profile);
+
   enum State {
     UNINITIALIZED,  // The decoder has not initialized.
     INITIALIZED,    // The decoder has initialized.
     RESETTING,      // The decoder is being reset.
     DECODE_ERROR,   // Decoding error happened.
   };
 
   static const int32 ID_LAST;     // maximum bitstream buffer id
   static const int32 ID_HALF;     // half of the maximum bitstream buffer id
   static const int32 ID_INVALID;  // indicates Reset or Release never occurred
@@ skipping 60 matching lines @@
   // decode. The queue owns SHM buffers. Guarded by |lock_|.
   std::deque<std::pair<SHMBuffer*, BufferData> > decode_buffers_;
 
   // The id that will be given to the next bitstream buffer. Guarded by |lock_|.
   int32 next_bitstream_buffer_id_;
 
   // A buffer that has an id less than this should be dropped because Reset or
   // Release has been called. Guarded by |lock_|.
   int32 reset_bitstream_buffer_id_;
 
+  // Minimum and maximum supported resolutions for the current profile/VDA.
+  gfx::Size min_resolution_;
+  gfx::Size max_resolution_;
+
   // Must be destroyed, or invalidated, on |vda_loop_proxy_|
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<RTCVideoDecoder> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RTCVideoDecoder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_H_