From 22e16fdfcbb85b89ab0a8abbf16e37568ebde619 Mon Sep 17 00:00:00 2001
From: Javernaut <javernaut@gmail.com>
Date: Sun, 19 Apr 2020 17:19:40 +0300
Subject: [PATCH] Passing desired ABIs as an argument

---
 ffmpeg-android-maker.sh    |  8 ++------
 scripts/parse-arguments.sh | 41 +++++++++++++++++++++++++++++++++-----
 2 files changed, 38 insertions(+), 11 deletions(-)

diff --git a/ffmpeg-android-maker.sh b/ffmpeg-android-maker.sh
index 8cba281..ad7f947 100755
--- a/ffmpeg-android-maker.sh
+++ b/ffmpeg-android-maker.sh
@@ -97,12 +97,8 @@ do
   cd ${BASE_DIR}
 done
 
-# ABIs to build FFmpeg for.
-# x86 is the first, because it is likely to have Text Relocations.
-# In this case the rest ABIs will not be assembled at all.
-ABIS_TO_BUILD=( "x86" "x86_64" "armeabi-v7a" "arm64-v8a" )
-
-for ABI in ${ABIS_TO_BUILD[@]}
+# Main build loop
+for ABI in ${FFMPEG_ABIS_TO_BUILD[@]}
 do
   # Exporting variables for the current ABI
   source ${SCRIPTS_DIR}/export-build-variables.sh ${ABI}
diff --git a/scripts/parse-arguments.sh b/scripts/parse-arguments.sh
index acc3e4d..20be61d 100755
--- a/scripts/parse-arguments.sh
+++ b/scripts/parse-arguments.sh
@@ -3,16 +3,38 @@
 # This script parses arguments that were passed to ffmpeg-android-maker.sh
 # and exports a bunch of varables that are used elsewhere.
 
-# Local variables with default values. Can be overridden with specific arguments
-# See the end of this file for more description
-EXTERNAL_LIBRARIES=()
+# Local variables with default values (except ABIS_TO_BUILD).
+# Can be overridden with specific arguments.
+# See the end of this file for more description.
+ABIS_TO_BUILD=()
+API_LEVEL=16
 SOURCE_TYPE=TAR
 SOURCE_VALUE=4.2.2
-API_LEVEL=16
+EXTERNAL_LIBRARIES=()
 
 for argument in "$@"
 do
   case $argument in
+    # Build for only specified ABIs (separated by comma)
+    --target-abis=*|-abis=*)
+      IFS=',' read -ra ABIS <<< "${argument#*=}"
+      for abi in "${ABIS[@]}"; do
+        case $abi in
+          x86|x86_64|armeabi-v7a|arm64-v8a)
+            ABIS_TO_BUILD+=( "$abi" )
+          ;;
+          arm)
+            ABIS_TO_BUILD+=( "armeabi-v7a" )
+          ;;
+          arm64)
+            ABIS_TO_BUILD+=( "arm64-v8a" )
+          ;;
+          *)
+            echo "Unknown ABI: $abi"
+          ;;
+        esac
+      done
+    ;;
     # Use this value as Android platform version during compilation.
     --android-api-level=*|-android=*)
       API_LEVEL="${argument#*=}"
@@ -55,11 +77,20 @@ do
   esac
 done
 
+# if ABIS_TO_BUILD list is empty, then fill it with all supported ABIs
+# The x86 is the first, because it is more likely to have Text Relocations.
+# In this case the rest ABIs will not be assembled at all.
+if [ ${#ABIS_TO_BUILD[@]} -eq 0 ]; then
+  ABIS_TO_BUILD=( "x86" "x86_64" "armeabi-v7a" "arm64-v8a" )
+fi
+# The FFmpeg will be build for ABIs in this list
+export FFMPEG_ABIS_TO_BUILD=${ABIS_TO_BUILD[@]}
+
 # Saving the information FFmpeg's source code downloading
 export FFMPEG_SOURCE_TYPE=$SOURCE_TYPE
 export FFMPEG_SOURCE_VALUE=$SOURCE_VALUE
 
-# A list of external libraries to build into the FFMpeg
+# A list of external libraries to build into the FFmpeg
 # Elements from this list are used for strings substitution
 export FFMPEG_EXTERNAL_LIBRARIES=${EXTERNAL_LIBRARIES[@]}