[mpi/mpp/enc]: New encoder framework

1. Interface change:
Separate normal config into three basic config and several runtime config:
Three basic config -
a. rate control config
b. preprocess config
c. video codec protocol config
More flexible rate control interfaces are provided.
More codec configure interfaces are provided.
Change flag with bitmap is provided for further optimization.

2. Remove old codec config from controller and left rate control module only
Encoder controller only handle user rate control requirement and bit allocation.
Hal hardware encoder only handle qp calculation according given target bit.
Remove all old codec code.

3. Move codec process to hal
Different hardware will share same codec process function in common protocol
directory. And different hardware api will register to same api set. Codec
header generation is moved to separate hal directory.

4. Encoder will return length by task
Encoder will NOT get stream information feedback from controller. All
information required by encoder will be all stored in Task.

5. Add mpp_rc for rate control
Move some common rate control utils to mpp_base.

6. Update mpi_enc_test and mpi_rc_test with new interface

Change-Id: Iebb5e276a48f547167e1bed4673f21cc2f0c8ad5
Signed-off-by: Herman Chen <herman.chen@rock-chips.com>
Signed-off-by: Lin Kesheng <lks@rock-chips.com>

inc/rk_mpi.h

@@ -138,6 +138,24 @@ typedef struct MppEncConfig_t {
     RK_S32  cabac_en;
 } MppEncConfig;
 
+typedef struct MppEncCodecCfg_t {
+    MppCodingType       coding;
+
+    union {
+        RK_U32          change;
+        MppEncH264Cfg   h264;
+        MppEncH265Cfg   h265;
+        MppEncJpegCfg   jpeg;
+        MppEncVp8Cfg    vp8;
+    };
+} MppEncCodecCfg;
+
+typedef struct MppEncCfgSet_t {
+    MppEncPrepCfg       prep;
+    MppEncRcCfg         rc;
+    MppEncCodecCfg      codec;
+} MppEncCfgSet;
+
 /**
  * @ingroup rk_mpi
  * @brief mpp main work function set