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 27 matching lines @@
 // It is also responsible for managing and freeing VABuffers (not VASurfaces),
 // which are used to queue parameters and slice data to the HW codec,
 // as well as underlying memory for VASurfaces themselves.
 class CONTENT_EXPORT VaapiWrapper {
  public:
   enum CodecMode {
     kDecode,
     kEncode,
   };
 
+  // Create VaapiWrapper for VAProfile.
   // |report_error_to_uma_cb| will be called independently from reporting
   // errors to clients via method return values.
   static scoped_ptr<VaapiWrapper> Create(
       CodecMode mode,
+      VAProfile profile,
+      const base::Closure& report_error_to_uma_cb);
+
+  // Create VaapiWrapper for VideoCodecProfile. It maps VideoCodecProfile
+  // |profile| to VAProfile.
+  // |report_error_to_uma_cb| will be called independently from reporting
+  // errors to clients via method return values.
+  static scoped_ptr<VaapiWrapper> CreateForVideoCodec(
+      CodecMode mode,
       media::VideoCodecProfile profile,
       const base::Closure& report_error_to_uma_cb);
 
   // Return the supported encode profiles.
   static std::vector<media::VideoCodecProfile> GetSupportedEncodeProfiles(
       const base::Closure& report_error_to_uma_cb);
 
   ~VaapiWrapper();
 
   // Create |num_surfaces| backing surfaces in driver for VASurfaces, each
@@ skipping 49 matching lines @@
   // Put data from |va_surface_id| into |x_pixmap| of size
   // |dest_size|, converting/scaling to it.
   bool PutSurfaceIntoPixmap(VASurfaceID va_surface_id,
                             Pixmap x_pixmap,
                             gfx::Size dest_size);
 #endif  // USE_X11
 
   // 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);
+  // Get a VAImage from a VASurface and map it into memory. The size and format
+  // are derived from the surface. Use GetVaImage() instead if |format| or
+  // |size| are different from surface internal representation. The VAImage
+  // should be released using the ReturnVaImage function. Returns true when
+  // successful.
+  bool GetDerivedVaImage(VASurfaceID va_surface_id, VAImage* image, void** mem);
+
+  // Get a VAImage from a VASurface |va_surface_id| and map it into memory with
+  // given |format| and |size|. The output is |image| and the mapped memory is
+  // |mem|. If |format| doesn't equal to the internal format, the underlying
+  // implementation will do format conversion if supported. |size| should be
+  // smaller than or equal to the surface. If |size| is smaller, the image will
+  // be cropped. The VAImage should be released using the ReturnVaImage
+  // function. Returns true when successful.
+  bool GetVaImage(VASurfaceID va_surface_id,
+                  VAImageFormat* format,
+                  const gfx::Size& size,
+                  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);
+  // GetVaImage() or GetDerivedVaImage().
+  void ReturnVaImage(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);
 
   // Download the contents of the buffer with given |buffer_id| into a buffer of
   // size |target_size|, pointed to by |target_ptr|. The number of bytes
@@ skipping 14 matching lines @@
   // |va_surface_id_dest| applying pixel format conversion and scaling
   // if needed.
   bool BlitSurface(VASurfaceID va_surface_id_src,
                    const gfx::Size& src_size,
                    VASurfaceID va_surface_id_dest,
                    const gfx::Size& dest_size);
 
  private:
   VaapiWrapper();
 
-  bool Initialize(CodecMode mode,
-                  media::VideoCodecProfile profile,
-                  const base::Closure& report_error__to_uma_cb);
+  bool Initialize(CodecMode mode, VAProfile va_profile);
   void Deinitialize();
   bool VaInitialize(const base::Closure& report_error_to_uma_cb);
   bool GetSupportedVaProfiles(std::vector<VAProfile>* profiles);
   bool IsEntrypointSupported(VAProfile va_profile, VAEntrypoint entrypoint);
   bool AreAttribsSupported(VAProfile va_profile,
                            VAEntrypoint entrypoint,
                            const std::vector<VAConfigAttrib>& required_attribs);
 
   // Destroys a |va_surface| created using CreateUnownedSurface.
   void DestroyUnownedSurface(VASurfaceID va_surface_id);
@@ skipping 55 matching lines @@
   VAConfigID va_vpp_config_id_;
   VAContextID va_vpp_context_id_;
   VABufferID va_vpp_buffer_id_;
 
   DISALLOW_COPY_AND_ASSIGN(VaapiWrapper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_VAAPI_WRAPPER_H_