Skip to content

Latest commit

 

History

History
151 lines (114 loc) · 5.07 KB

How_to_build_ffmpeg_with_openssl.md

File metadata and controls

151 lines (114 loc) · 5.07 KB
Raw

1. Download OpenSSL source from OpenSSL official site

Download openssl-1.0.2o.tar.gz
DO NOT use OpenSSL 1.1.0, because FFmpeg 4.0 is not compatible for now.

2. Use x2on/OpenSSL-for-iPhone to build OpenSSL for iOS

Follow the steps in the README.md of x2on/OpenSSL-for-iPhone to build OpenSSL for iOS.
You need to edit build-libssl.sh since the default version may be others.

# Change default version to 1.0.2o
DEFAULTVERSION="1.0.2o"

3. Copy built OpenSSL include files and libraries into a temporary folder

After built successfully, you will find "include" and "lib" folders.
Copy them into a temporary folder, and you can name it to "openssl".

4. Edit build-ffmpeg.sh file

(1) Download kewlbear/FFmpeg-iOS-build-script

Download kewlbear/FFmpeg-iOS-build-script and you will see the "FFmpeg-iOS-build-script" folder.

(2) Duplicate "build-ffmpeg.sh"

Make a copy of "build-ffmpeg.sh" and rename it to "build-ffmpeg-openssl.sh".

(3) Edit "build-ffmpeg-openssl.sh"

Add the scripts between ##### Add Begin ##### and ##### Add End ##### to build with OpenSSL:

...

##### Change Begin #####
FF_VERSION="4.0"
#####  Change End  #####

...

#FDK_AAC=`pwd`/../fdk-aac-build-script-for-iOS/fdk-aac-ios

##### Add Begin #####
# OpenSSL
OPENSSL=`pwd`/openssl
#####  Add End  #####

CONFIGURE_FLAGS="--enable-cross-compile --disable-debug --disable-programs \
                 --disable-doc --enable-pic"

...

if [ "$FDK_AAC" ]
then
	CONFIGURE_FLAGS="$CONFIGURE_FLAGS --enable-libfdk-aac"
fi

##### Add Begin #####
if [ "$OPENSSL" ]
then
	CONFIGURE_FLAGS="$CONFIGURE_FLAGS --enable-openssl"
fi
#####  Add End  #####

# avresample
#CONFIGURE_FLAGS="$CONFIGURE_FLAGS --enable-avresample"

...

if [ "$FDK_AAC" ]
then
	CFLAGS="$CFLAGS -I$FDK_AAC/include"
	LDFLAGS="$LDFLAGS -L$FDK_AAC/lib"
fi

##### Add Begin #####
if [ "$OPENSSL" ]
then
	CFLAGS="$CFLAGS -I$OPENSSL/include"
	LDFLAGS="$LDFLAGS -L$OPENSSL/lib"
fi
#####  Add End  #####

TMPDIR=${TMPDIR/%\/} $CWD/$SOURCE/configure \

...

5. Move "openssl" folder into "FFmpeg-iOS-build-script" folder

Move the "openssl" folder into the "FFmpeg-iOS-build-script" folder.
Make sure the "build-ffmpeg-openssl.sh" file is under the "FFmpeg-iOS-build-script" folder, too.

6. Edit "audio_convert_neon.S"

This step is especially for FFmpeg 4.0 (armv7/armv7s).
If you are about to compile FFmpeg 4.0 (arm64/i386/x86_64) or lower (armv7/armv7s/arm64/i386/x86_64), you can skip this step.
Open the file "ffmpeg-4.0/libswresample/arm/audio_convert_neon.S".

Delete _swri_oldapi_conv_flt_to_s16_neon: and _swri_oldapi_conv_fltp_to_s16_2ch_neon:.
Change _swri_oldapi_conv_flt_to_s16_neon to X(swri_oldapi_conv_flt_to_s16_neon) and _swri_oldapi_conv_fltp_to_s16_2ch_neon to X(swri_oldapi_conv_fltp_to_s16_2ch_neon).

...

function swri_oldapi_conv_flt_to_s16_neon, export=1
// >> Delete Begin
// _swri_oldapi_conv_flt_to_s16_neon:
// << Delete End
        subs            r2,  r2,  #8
        vld1.32         {q0},     [r1,:128]!
        vcvt.s32.f32    q8,  q0,  #31

...

function swri_oldapi_conv_fltp_to_s16_2ch_neon, export=1
// >> Delete Begin
// _swri_oldapi_conv_fltp_to_s16_2ch_neon:
// << Delete End
        ldm             r1,  {r1, r3}
        subs            r2,  r2,  #8
        vld1.32         {q0},     [r1,:128]!

...

function swri_oldapi_conv_fltp_to_s16_nch_neon, export=1
        cmp             r3,  #2
        itt             lt
        ldrlt           r1,  [r1]
// >> Change Begin
//        blt             _swri_oldapi_conv_flt_to_s16_neon
//        beq             _swri_oldapi_conv_fltp_to_s16_2ch_neon
        blt             X(swri_oldapi_conv_flt_to_s16_neon)
        beq             X(swri_oldapi_conv_fltp_to_s16_2ch_neon)
// << Change End

        push            {r4-r8, lr}
        cmp             r3,  #4
        lsl             r12, r3,  #1
        blt             4f

...

7. Run "build-ffmpeg-openssl.sh"

Run and wait.

8. Put built FFmpeg include files and libraries into "DLGPlayer/Externals/ffmpeg" folder

Put built "ffmpeg/include" and "ffmpeg/lib" folders into the example project's "DLGPlayer/Externals/ffmpeg" folder.

9. Add OpenSSL into the example project

Put "openssl" folder into the example project's "DLGPlayer/Externals" folder.
In Xcode, right click "Externals" folder, choose "Add Files to ...", select "openssl" folder and click "Add" button.

10. Run the demo

Build the example project and run the demo on your device or simulator.