jpeg: add support for crop and partial decode

add interface to support jpeg crop and partial decode.

v2: remove redundant macro for bit position and use crop bit-field (Carl Zhang)
v3: rename variables to crop instead of roi (Carl Zhang)

Signed-off-by: Sathishkumar S <[email protected]>

Author: pldrc

va/va.h

@@ -1151,8 +1151,10 @@ typedef union _VAConfigAttribValDecJPEG {
     struct {
         /** \brief Set to (1 << VA_ROTATION_xxx) for supported rotation angles. */
         uint32_t rotation : 4;
+        /** \brief set to 1 for crop and partial decode support, 0 if not supported */
+        uint32_t crop : 1;
         /** \brief Reserved for future use. */
-        uint32_t reserved : 28;
+        uint32_t reserved : 27;
     } bits;
     uint32_t value;
 } VAConfigAttribValDecJPEG;

va/va_dec_jpeg.h

@@ -75,8 +75,10 @@ typedef struct _VAPictureParameterBufferJPEGBaseline {
     uint8_t       color_space;
     /** \brief Set to VA_ROTATION_* for a single rotation angle reported by VAConfigAttribDecJPEG. */
     uint32_t      rotation;
+    /** \brief crop rectangle boundary in pixels */
+    VARectangle   crop_rectangle;
     /** \brief Reserved bytes for future use, must be zero */
-    uint32_t                va_reserved[VA_PADDING_MEDIUM - 1];
+    uint32_t                va_reserved[VA_PADDING_MEDIUM - 3];
 } VAPictureParameterBufferJPEGBaseline;
 
 /**