Add JPEG decoder for VAAPI JPEG decode acceleration

content/common/gpu/media/vaapi_wrapper.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.
 //
 // This file contains an implementation of VaapiWrapper, used by
 // VaapiVideoDecodeAccelerator and VaapiH264Decoder for decode,
 // and VaapiVideoEncodeAccelerator for encode, to interface
 // with libva (VA-API library for hardware video codec).
 
 #ifndef CONTENT_COMMON_GPU_MEDIA_VAAPI_WRAPPER_H_
@@ skipping 26 matching lines @@
 // as well as underlying memory for VASurfaces themselves.
 class CONTENT_EXPORT VaapiWrapper {
  public:
   enum CodecMode {
     kDecode,
     kEncode,
   };
 
   // |report_error_to_uma_cb| will be called independently from reporting
   // errors to clients via method return values.
   static scoped_ptr<VaapiWrapper> Create(

[wuchengli, 2015/01/12 09:08:53]

Can we add another Create for JPEG so we don't need to add a new
VideoCodecProfile?

       CodecMode mode,
       media::VideoCodecProfile profile,
       Display* x_display,
       const base::Closure& report_error_to_uma_cb);
 
   // Return the supported encode profiles.
   static std::vector<media::VideoCodecProfile> GetSupportedEncodeProfiles(
       Display* x_display,
       const base::Closure& report_error_to_uma_cb);
 
@@ skipping 47 matching lines @@
 
   // Returns true if the VAAPI version is less than the specified version.
   bool VAAPIVersionLessThan(int major, int minor);
 
   // Get a VAImage from a VASurface and map it into memory. The VAImage should
   // be released using the ReturnVaImage function. Returns true when successful.
   // This is intended for testing only.
   bool GetVaImageForTesting(VASurfaceID va_surface_id,
                             VAImage* image,
                             void** mem);
 

[wuchengli, 2015/01/12 09:08:53]

Add documentation.

[kcwu, 2015/01/16 15:12:56]

Done.

+  bool GetVaImageWithFormat(VASurfaceID va_surface_id,
+                            VAImageFormat* format,
+                            gfx::Size size,

[Owen Lin, 2015/01/13 06:17:59]

const gfx::Size&

[kcwu, 2015/01/16 15:12:56]

Done.

+                            VAImage* image,
+                            void** mem);
+
   // Release the VAImage (and the associated memory mapping) obtained from
   // GetVaImage(). This is intended for testing only.
   void ReturnVaImageForTesting(VAImage* image);
 
   // Upload contents of |frame| into |va_surface_id| for encode.
   bool UploadVideoFrameToSurface(const scoped_refptr<media::VideoFrame>& frame,
                                  VASurfaceID va_surface_id);
 
   // Create a buffer of |size| bytes to be used as encode output.
   bool CreateCodedBuffer(size_t size, VABufferID* buffer_id);
@@ skipping 70 matching lines @@
   // Called to report codec errors to UMA. Errors to clients are reported via
   // return values from public methods.
   base::Closure report_error_to_uma_cb_;
 
   DISALLOW_COPY_AND_ASSIGN(VaapiWrapper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_VAAPI_WRAPPER_H_