[coding-style]: add git hook to format code

1. please run hooks/install_hooks.sh manually for the first time
2. hooks/pre-commit.hook is called before commit automatically
3. format code

Change-Id: I4565b206da10abb59506ef73f62392c9e9690cd4
Signed-off-by: Lin Kesheng <lks@rock-chips.com>

hooks/install_hooks.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# install git hooks
+
+src_dir=../../hooks
+dst_dir=../.git/hooks
+
+if test ! \( -x $dst_dir/pre-commit -a -L $dst_dir/pre-commit \);
+
+then
+
+	rm -f $dst_dir/pre-commit
+
+	if ! ln -s $src_dir/pre-commit.hook $dst_dir/pre-commit 2> /dev/null
+
+	then
+
+		echo "Failed to create commit hook symlink, copying instead ..."
+		cp pre-commit.hook ../.git/hooks/pre-commit
+
+	fi
+
+fi

hooks/pre-commit.hook

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+out_file="./fmt_df.txt"
+cur_dir=$(pwd)
+script_dir=tools/
+
+echo "[git-hook]: before commit, format code use mpp_astyle.sh ..."
+
+cd $script_dir
+./mpp_astyle.sh
+
+cd $cur_dir
+
+git diff > $out_file
+
+if [ -s $out_file ]
+then {
+    echo "[git-hook]: code changed after formating, please commit again."
+    rm $out_file
+    echo "[git-hook]: git status below:"
+    git status
+    exit 1
+} else {
+    echo "[git-hook]: nothing change after formating, commit continues."
+    if [ -f $out_file ]
+    then {
+        rm $out_file
+    } fi
+    exit 0
+} fi
+

mpp/codec/dec/m2v/m2vd_parser.c

@@ -422,7 +422,7 @@ MPP_RET m2vd_parser_prepare(void *ctx, MppPacket pkt, HalDecTask *task)
     p->pts = mpp_packet_get_pts(pkt);
     len_in = (RK_U32)mpp_packet_get_length(pkt);
 
-    if(mpp_packet_get_flag(pkt) & MPP_PACKET_FLAG_EXTRA_DATA) {
+    if (mpp_packet_get_flag(pkt) & MPP_PACKET_FLAG_EXTRA_DATA) {
         pos += len_in;
         mpp_packet_set_pos(pkt, pos);
         return ret;

mpp/codec/mpp_rc.cpp

@@ -605,7 +605,7 @@ MPP_RET mpp_quadreg_update(MppLinReg *ctx, RK_S32 x, RK_S32 r, RK_S32 wlen)
         else
             i--;
 
-       cq = cx[i];
+        cq = cx[i];
 
         /* limite wlen when complexity change sharply */
         if (idx++ > wlen)
@@ -682,7 +682,7 @@ MPP_RET mpp_quadreg_update(MppLinReg *ctx, RK_S32 x, RK_S32 r, RK_S32 wlen)
         mpp_rc_dbg_rc("%e %e %e\n", b0, b1, b2);
 
         matrix_value = a00 * a11 * a22 + a01 * a12 * a20 + a02 * a10 * a21
-            - a02 * a11 * a20 - a00 * a12 * a21 - a01 * a10 * a22;
+                       - a02 * a11 * a20 - a00 * a12 * a21 - a01 * a10 * a22;
 
         mpp_rc_dbg_rc("matrix value: %e\n", matrix_value);
 

mpp/hal/worker/libvpu/vpu.c

@@ -114,7 +114,7 @@ int VPUClientInit(VPU_CLIENT_TYPE type)
 
     if (fd == -1) {
         mpp_err_f("failed to open %s, errno = %d, error msg: %s\n",
-                                name, errno, strerror(errno));
+                  name, errno, strerror(errno));
         return -1;
     }
     ret = ioctl(fd, VPU_IOC_SET_CLIENT_TYPE, (RK_U32)type);

tools/mpp_astyle.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 set -e
-astyle --options=astylerc ../*.cpp ../*.c ../*.h
+./astyle --quiet --options=astylerc ../*.cpp ../*.c ../*.h