Add support for more than 8 bits per pixel in ffmpeg

lib/LibAvContextHandle.cpp

@@ -112,7 +112,8 @@ Void LibAvContextHandle::closeAvFormat()
   m_bHasStream = false;
 }
 
-Bool LibAvContextHandle::initAvFormat( const char* filename, UInt& width, UInt& height, Int& pixel_format, Double& frame_rate, UInt64& num_frames )
+Bool LibAvContextHandle::initAvFormat( const char* filename, UInt& width, UInt& height, Int& pixel_format, UInt& bits_pel, Double& frame_rate,
+    UInt64& num_frames )
 {
   fmt_ctx = NULL;
   video_dec_ctx = NULL;
@@ -211,6 +212,13 @@ Bool LibAvContextHandle::initAvFormat( const char* filename, UInt& width, UInt&
   num_frames = num_frames == 0 ? 1 : num_frames;
 
   Int pix_fmt = video_dec_ctx->pix_fmt;
+
+  // Set bits per pixel to default (8 bits)
+  bits_pel = 8;
+
+  /**
+   * Auxiliar conversation to re-use similar pixfmt
+   */
   switch( pix_fmt )
   {
   case AV_PIX_FMT_YUVJ420P:
@@ -222,6 +230,11 @@ Bool LibAvContextHandle::initAvFormat( const char* filename, UInt& width, UInt&
   case AV_PIX_FMT_YUVJ444P:
     pix_fmt = AV_PIX_FMT_YUV444P;
     break;
+  case AV_PIX_FMT_GRAY16LE:
+  case AV_PIX_FMT_GRAY16BE:
+    bits_pel = 16;
+    pix_fmt = AV_PIX_FMT_GRAY8;
+    break;
   }
 
   width = video_dec_ctx->width;