lim n->0 1/n=OO

ffmpeg , H264 ( LIBX264 ) build for android ...

2010-09-03T00:57:00.000+09:00

I forgot soemthing what i did for ffmpeg / h264 build on android, on this post

ffmpeg / libx264 build for ANDROID

I tried one more time, but got some problem

1) ffmpeg configure has a problem
    - it can't find X264 lib well.
2) After fixing x264 lib, still there is a following error.

/sdcard/arm_and/lib/libx264.a(encoder.o): In function `x264_encoder_open_98':

encoder.c:(.text.x264_encoder_open_98+0x5d6): undefined reference to `__clzsi2'

/sdcard/arm_and/lib/libx264.a(analyse.o): In function `x264_macroblock_tree_finish':

analyse.c:(.text.x264_macroblock_tree_finish+0x78): undefined reference to `__clzsi2'

analyse.c:(.text.x264_macroblock_tree_finish+0x80): undefined reference to `__clzsi2'

/sdcard/arm_and/lib/libx264.a(ratecontrol.o): In function `x264_ratecontrol_init_reconfigurable':

ratecontrol.c:(.text.x264_ratecontrol_init_reconfigurable+0x174): undefined reference to `__ctzsi2'

ratecontrol.c:(.text.x264_ratecontrol_init_reconfigurable+0x1b6): undefined reference to `__ctzsi2'
ratecontrol.c:(.text.x264_ratecontrol_init_reconfigurable+0x28a): undefined reference to `__clzsi2'
ratecontrol.c:(.text.x264_ratecontrol_init_reconfigurable+0x2ac): undefined reference to `__clzsi2'
ratecontrol.c:(.text.x264_ratecontrol_init_reconfigurable+0x2ce): undefined reference to `__clzsi2
/sdcard/arm_and/lib/libx264.a(ratecontrol.o): In function `x264_adaptive_quant_frame':
ratecontrol.c:(.text.x264_adaptive_quant_frame+0x28a): undefined reference to `__clzsi2'
collect2: ld returned 1 exit status

How to fix ??

1) ffmpeg configure issue

    - most easy solution is "remove x264 checking part on ffmpeg configure "

      a) update configure file

          yes, remove checking part.

##enabled libx264 && require libx264 x264.h x264_encoder_encode -lx264 &&

## { check_cpp_condition x264.h "X264_BUILD >= 98"
## die "ERROR: libx264 version must be >= 0.98."; }

2) x264 source ..

     i don't know real reason, but there is no clz funtion on android system lib.
    so please remark 3 lines on "common/osdep.h" from X264 source.
// #define x264_clz(x) __builtin_clz(x)

// #define x264_ctz(x) __builtin_ctz(x)
// #else

final source will be like this.

#if defined(__GNUC__) && (__GNUC__ > 3
__GNUC__ == 3 && __GNUC_MINOR__ > 3)

// #define x264_clz(x) __builtin_clz(x)

// #define x264_ctz(x) __builtin_ctz(x)

// #else

static int ALWAYS_INLINE x264_clz( uint32_t x )

Steps...

1) change X264 source first.

2) build X264

3) change ffmpeg configure

4) ffmpeg compile ..

Please read previous POST ..

For Advance ^_^

ffmpeg rtsp client android

2010-07-30T21:11:00.000+09:00

ffmpeg is very powerful lib to handle multimedia file.

we can use ffmpeg several ways with android

1) ffmpeg server ( remote ) & android device.

   - for this one, we use ffserver with ffmpeg, rtsp service to android.

   - unfortunately, ffserver RTSP doesn't have "RTP-Info" part for android PLAY call,

   android can't co-work with ffserver RTSP.

   - how to fix : please read previous post.
   RTP-INFO FIX

   - after you fix ffserver RTP-INFO, android media player can play ffserver stream.

2) porting ffserver & ffmpeg.

   - you can port ffserver & ffmpeg on android phone.

   - But the speed is too slow, some low end device can't run such combination.

   - The production machine don't allow to run "executable file", so you need to make
   simple JNI wrapper.

     ffmpeg / ffserver simple JNI wrapper

3) run only ffmpeg on android phone.

   - for this case, it need to 3 implementation ways.

   - 3-1) use ffmpeg for only file conversion.

   this is not common way, but several media converter which run on android
   use this way.

   - 3-2) real time transcoding.

   for this one, we can't use mediaplayer's Video service.
   most codec free tool use this way.
   to handle video, using ffmpeg function,
   get MP4 video type and push it Video buffer directly.

   More detail, better to read "Pro android Game"

     PRO ANDROID GAME

   This way, it's not simple, you need to know ffmpeg function to handle
   video/audio stream.

   - 3-3) make simple RTSP server which work with ffmpeg.

   this is not common way, but it's also possible.
   most advantage is you don't need to know ffmpeg media handling.

4) Any case, you need to build ffmpeg for android phone.

   - most simple way,

   FFMPEG Porting

   - Recent version, you don't need to change anything. just configure option issue.

ffserver android RTSP bug fix

2010-07-28T17:16:00.000+09:00

ffserver can't work with Android, samsung galaxy S is working without bug fix, but Motorola didn't work.

Also android-x86 didn't work too.

A) Why ??

The RTP of ffserver has no bug, but there is no "RTP-info" on PLAY response.

- The combination VLC / android phone : working version.

You can see RTP-Info part.

PLAY rtsp://192.168.1.53:5454/test.mpg RTSP/1.0

CSeq: 4

Session: 3799294ce1f1ee34

User-Agent: PVPlayer CORE/8.000.1.1_RC4 OpenCORE/2.05 (Linux;Android 1.6)

RTSP/1.0 200 OK

Server: VLC/1.1.0

Date: Tue, 27 Jul 2010 11:02:05 GMT

RTP-Info: url=rtsp://192.168.1.53:5454/test.mpg/trackID=0;seq=43574;rtptime=205760961, url=rtsp://192.168.1.53:5454/test.mpg/trackID=1;seq=38412;rtptime=419920329

Session: 3799294ce1f1ee34

Content-Length: 0

Cache-Control: no-cache

Cseq: 4

- FFSERVER & Android phone

 There is no RTP-Info.

PLAY rtsp://192.168.229.132:5454/test.mpg RTSP/1.0

CSeq: 3

Session: 0924e591d955735c

User-Agent: PVPlayer CORE/8.000.1.1_RC4 OpenCORE/2.05 (Linux;Android 1.6)

B) This is how to fix.

On rtsp_cmd_play function on ffserver.c, add RTP-Info.

static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h)

{

HTTPContext *rtp_c;

// DEMO860

AVFormatContext *ctx;

int i;

RTPMuxContext *rptmuxctx;

/////////////////////////////////////////

rtp_c = find_rtp_session_with_url(url, h->session_id);

if (!rtp_c) {

rtsp_reply_error(c, RTSP_STATUS_SESSION);

return;

}

if (rtp_c->state != HTTPSTATE_SEND_DATA &&

rtp_c->state != HTTPSTATE_WAIT_FEED &&

rtp_c->state != HTTPSTATE_READY) {

rtsp_reply_error(c, RTSP_STATUS_STATE);

return;

}

rtp_c->state = HTTPSTATE_SEND_DATA;

/* now everything is OK, so we can send the connection parameters */

rtsp_reply_header(c, RTSP_STATUS_OK);

// DEMO860
url_fprintf(c->pb, "RTP-Info: " );

for(i=0;i< rtp_c->stream->nb_streams;i++) {

ctx = rtp_c->rtp_ctx[i];

rptmuxctx = ctx->priv_data;

url_fprintf(c->pb, "url=%sstreamid=%d;seq=%u;rtptime=%u, ", url, i, rptmuxctx->seq, rptmuxctx->timestamp );

}

url_fprintf(c->pb, "\r\n");

////////////////////////////////////////////////////////////

/* session ID */

url_fprintf(c->pb, "Session: %s\r\n", rtp_c->session_id);

url_fprintf(c->pb, "\r\n");

}

android / ffmpeg dynamic module, JNI simple wrapper

2010-07-09T20:56:00.000+09:00

On production device, we can't use "executable file ".

we need to build "dynamic, SO module" for ffmpeg/ ffserver.

This post explain how to build SO module and simple JNI interface for ffmpeg.

1) change ffmpeg.c

a) add JNI part.

////////////////////////////////////////////////////////////////////////////////////////////////////////////

// KKS ...

#include

int m_argc = 0;

int M_MAX_ARGC = 30;

char *m_pargv [30];

int dynamic_ffpmeg_main (int argc, char **argv);

jint JNICALL Java_com_ccmedia_codec_ffmpeg_mod_1run ( JNIEnv *, jclass, jstring, jstring );

jint JNICALL Java_com_ccmedia_codec_ffmpeg_mod_1run ( JNIEnv *env, jclass class, jstring pj1, jstring pj2) {

jint ji;

jboolean ic;

char sz_temp [1024];

char seps [] = " ";

char *psztoken, *pszdata;

int i = 0;

const char *pszname;

pszname = (*env)->GetStringUTFChars(env, pj1, &ic);

sprintf ( sz_temp, "ffmpeg %s ", pszname );

if ( ic == JNI_TRUE ) (*env)->ReleaseStringUTFChars(env, pj1, pszname);

// strcpy ( sz_temp, "ffmpeg -i /sdcard/arm_and/bin/tv_dump.mpg http://localhost:8090/feed1.ffm " );

printf ( "[DEBUG] %s\n", sz_temp );

psztoken = strtok ( sz_temp, seps );

while ( psztoken != NULL ) {

m_pargv [ m_argc] = ( char *)malloc ( strlen ( psztoken));

strcpy ( m_pargv [ m_argc], psztoken );

m_argc++;

psztoken = strtok ( NULL, seps);

}

for ( i = 0; i < m_argc; i++ ) {

printf ( "argc[%d] = %s\n", i, m_pargv[i]);

}

dynamic_ffpmeg_main ( m_argc, m_pargv );

ji = 0;

return ji;

}

b) change main function
original --> int main (int argc, char **argv )

new --> int dynamic_ffpmeg_main (int argc, char **argv )

c) add " new main function "

int main(int argc, char **argv)

{

dynamic_ffpmeg_main ( argc, argv );

return 0;

}

2) build ffmpeg .

- on preivious post, you can find "configure" option to build ffmpeg.

http://demo860.blogspot.com/2010/06/ffmpeg-libx264-build-for-android.html

3) build ffmpeg SO module using following command.

i use NDK r4 , /export/home/android/ndk/

/export/home/android/ndk/build/prebuilt/linux-x86/arm-eabi-4.4.0/bin/arm-eabi-gcc \

-nostdlib -Wl,-soname,libffmpeg.so -Wl,-shared,-Bsymbolic \

cmdutils.o ffmpeg.o \

-Wl,--no-whole-archive -Wl,--whole-archive \

/export/home/android/android-ndk-r4/build/prebuilt/linux-x86/arm-eabi-4.4.0/bin/../lib/gcc/arm-eabi/4.4.0/libgcc.a \

/export/home/android/ndk/build/platforms/android-8/arch-arm/usr/lib/libc.so \

/export/home/android/ndk/build/platforms/android-8/arch-arm/usr/lib/libstdc++.so \

/export/home/android/ndk/build/platforms/android-8/arch-arm/usr/lib/libm.so \

/export/home/android/ndk/build/platforms/android-8/arch-arm/usr/lib/libz.so \

/export/home/android/ndk/build/platforms/android-8/arch-arm/usr/lib/libdl.so \

-Wl,--no-undefined -Wl,-z,noexecstack -Wl,-rpath-link=/export/home/android/ndk/build/platforms/android-8/arch-arm/usr/lib \

./libavutil/libavutil.a \

./libavcodec/libavcodec.a \

./libavfilter/libavfilter.a \

./libavformat/libavformat.a \

./libswscale/libswscale.a \

./libavdevice/libavdevice.a \

-o libffmpeg.so

4) now you can use using following ffmpeg wrapper.

public class ffmpeg implements Runnable {

static boolean m_bret = false;

static String m_szconfig = " -i /sdcard/file.mpg -vcodec mpeg4 aaa.mpg";

public native String unimplementedStringFromJNI();

static {

try {

System.out.println ( "[AdDBCache] Module load try ffmpeg : " + System.getProperty("java.library.path"));

// System.load("/sdcard/arm_and/bin/libffmpeg.so");

System.loadLibrary("ffmpeg");

System.out.println ( "[AdDBCache] Module load success");

}

catch ( Exception e ) {

System.out.println ( "[AdDBCache] Module load err : " + System.getProperty("java.library.path"));

}

}

private static synchronized final native int mod_run (String name, String sztoken );

public void set_config ( String sz_config ) {

m_szconfig = sz_config;

}

public void run_core ( String sz_file, String sz_token ) {

int n_stat;

m_bret = false;

n_stat = mod_run ( m_szconfig, sz_token );

m_bret = true;

}

public void run () {

run_core ( "", "");

}

}

5) ffmpeg / ffserver,

- i made both , dynamic module and run it.
- the speed is ok but it's use CPU so much.

ffmpeg / libx264 build for ANDROID

2010-06-15T00:25:00.000+09:00

1) requirement

   - NDK r4 : please use NDK r4 instead of NDK r3.

   - using NDK r4 new option, you can know the detail build option.

   - please get ffmpeg http://www.ffmpeg.org/download.html

   - please get libx264 http://www.videolan.org/developers/x264.html

2) build option for libx264

export ARM_ROOT=/export/home/android/ndk
export ARM_INC=$ARM_ROOT/build/platforms/android-5/arch-arm/usr/include/
export ARM_LIB=$ARM_ROOT/build/platforms/android-5/arch-arm/usr/lib/
export ARM_TOOL=$ARM_ROOT/build/prebuilt/linux-x86/arm-eabi-4.4.0
export ARM_LIBO=$ARM_TOOL/lib/gcc/arm-eabi/4.4.0
export PATH=$ARM_TOOL/bin:$PATH
export ARM_PRE=arm-eabi

./configure --prefix=/sdcard/arm_and \
   --disable-gpac \
   --extra-cflags=" -I$ARM_INC -fPIC -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-prote
ctor -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtu
ne=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -DANDROID -Wa,--noexecstack -
MMD -MP " \
   --extra-ldflags=" -nostdlib -Bdynamic -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,nocopyreloc -Wl,-soname,/system
/lib/libz.so -Wl,-rpath-link=$ARM_LIB,-dynamic-linker=/system/bin/linker -L$ARM_LIB -nostdlib $ARM_LIB/crtbegin_dynamic.o $AR
M_LIB/crtend_android.o -lc -lm -ldl -lgcc " \
   --cross-prefix=${ARM_PRE}- --disable-asm --disable-pthread --host=arm-linux \

  3) build option for ffmpeg

export ARM_ROOT=/export/home/android/ndk
export ARM_INC=$ARM_ROOT/build/platforms/android-5/arch-arm/usr/include/
export ARM_LIB=$ARM_ROOT/build/platforms/android-5/arch-arm/usr/lib/
export ARM_TOOL=$ARM_ROOT/build/prebuilt/linux-x86/arm-eabi-4.4.0
export ARM_LIBO=$ARM_TOOL/lib/gcc/arm-eabi/4.4.0
export PATH=$ARM_TOOL/bin:$PATH
export ARM_PRE=arm-eabi
export LIB_INC=/sdcard/arm_and/include
export LIB_LIB=/sdcard/arm_and/lib

./configure \
--target-os=linux \
--arch=armv5te \
--enable-cross-compile \
--cc=$ARM_TOOL/bin/${ARM_PRE}-gcc \
--cross-prefix=$ARM_TOOL/bin/${ARM_PRE}- \
--extra-cflags=" -fPIC -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -
D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtune=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -D
ANDROID -Wa,--noexecstack -MMD -MP " \
--enable-static \
--disable-shared --enable-libx264 --enable-gpl \
--disable-asm --disable-yasm \
--prefix=/sdcard/arm_and \
--disable-amd3dnow --disable-amd3dnowext --disable-mmx --disable-mmx2 --disable-sse --disable-ssse3 \
--extra-cflags="-I$ARM_INC -std=gnu99 -I$LIB_INC " \
--extra-libs="-lc -lm -ldl -lgcc -lz -lx264 " \
--extra-ldflags=" -L$LIB_LIB -Wl,-rpath-link=$LIB_LIB -nostdlib -Bdynamic -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,nocopyreloc -Wl,-soname,/system/lib/libz.so
-Wl,-rpath-link=$ARM_LIB,-dynamic-linker=/system/bin/linker -L$ARM_LIB -nostdlib $ARM_LIB/crtbegin_dynamic.o $ARM_LIB/crtend_android.o "

4) you will get 4 files ..

   - ffmpeg, ffprobe, ffserver, x264.
   - because we didn't ready SDL, we can't get ffplay.

5) how to use it ?

   - because android support a few codecs, it's a little bit difficult to play some common files.
   so, ffmpeg/ ffserver will run on android device to change stream format.

   - for this one, Howard Chu, ffmpeg team member already check it. https://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2010-May/088706.html

   - screen capture to use ffserver/ffmpeg to play H264/AAC / MPEG PS stream file on android emulator.

- unfortunately, the x264 doesn't work well on android, need to check X264/ffmpeg.

ffserver / vlc / RTSP

2010-06-11T10:31:00.001+09:00

1) ffserver has a silmple funtion for streaming.

    - it can run on android or several platforms..
    - ffsrever also have RTP / RTSP / SDP protocol.

2) ffserver / VLC/ rtsp problem ..

    - because VLC / ffserver RTSP handshake have a problem,
      ffserver / vlc / rtsp combination doesn't work.

    - VLC client use

         PLAY rtsp://192.168.229.132:5454/test1-rtsp.mpg/ RTSP/1.0


     - FFSERVER internal ...

        rtsp://192.168.229.132:5454/test1-rtsp.mpg

       note ... there is no "/" after ".mpg"

3) fix the code ... ffserver / VLC/ rtsp .

   - ffserver.c , find_rtp_session_with_url function ...

     please change the code

     // if(!strcmp(path, rtp_c->stream->filename)) { <-- original
     if ( ! strncmp ( path, rtp_c->stream->filename, strlen ( rtp_c->stream->filename))) { <-- update

4) Now you can use FFSERVER RTSP with VLC client.

     - handshake output ( using http://www.wireshark.org/ )

OPTIONS rtsp://192.168.229.132:5454/test1-rtsp.mpg RTSP/1.0

CSeq: 1115

User-Agent: VLC media player (LIVE555 Streaming Media v2010.01.07)

RTSP/1.0 200 OK

CSeq: 1115

Public: OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE

DESCRIBE rtsp://192.168.229.132:5454/test1-rtsp.mpg RTSP/1.0

CSeq: 1116

Accept: application/sdp

User-Agent: VLC media player (LIVE555 Streaming Media v2010.01.07)

RTSP/1.0 200 OK

CSeq: 1116

Date: Thu, 10 Jun 2010 13:57:06 GMT

Content-Base: rtsp://192.168.229.132:5454/test1-rtsp.mpg/

Content-Type: application/sdp

Content-Length: 588

v=0

o=- 0 0 IN IP4 127.0.0.1

s=No Title

c=IN IP4 0.0.0.0

t=0 0

a=tool:libavformat 52.68.0

m=audio 0 RTP/AVP 97

b=AS:64

a=rtpmap:97 MPEG4-GENERIC/44100/2

a=fmtp:97 profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3(null); Profile=1;

a=control:rtsp://192.168.229.132:5454/test1-rtsp.mpg/streamid=0

m=video 0 RTP/AVP 96

b=AS:200

a=rtpmap:96 MP4V-ES/90000

a=fmtp:96 profile-level-id=3 config=000001b001000001b58913000001000000012000c48d8800cd0b04241463000001b24c61766335322e34392e30;

a=control:rtsp://192.168.229.132:5454/test1-rtsp.mpg/streamid=1

SETUP rtsp://192.168.229.132:5454/test1-rtsp.mpg/streamid=0 RTSP/1.0

CSeq: 1117

Transport: RTP/AVP;unicast;client_port=61174-61175

User-Agent: VLC media player (LIVE555 Streaming Media v2010.01.07)

RTSP/1.0 200 OK

CSeq: 1117

Date: Thu, 10 Jun 2010 13:57:06 GMT

Session: 08655a84dbac40c2

Transport: RTP/AVP/UDP;unicast;client_port=61174-61175;server_port=44177-40910

SETUP rtsp://192.168.229.132:5454/test1-rtsp.mpg/streamid=1 RTSP/1.0

CSeq: 1118

Transport: RTP/AVP;unicast;client_port=61176-61177

Session: 08655a84dbac40c2

User-Agent: VLC media player (LIVE555 Streaming Media v2010.01.07)

RTSP/1.0 200 OK

CSeq: 1118

Date: Thu, 10 Jun 2010 13:57:06 GMT

Session: 08655a84dbac40c2

Transport: RTP/AVP/UDP;unicast;client_port=61176-61177;server_port=43655-39009

PLAY rtsp://192.168.229.132:5454/test1-rtsp.mpg/ RTSP/1.0

CSeq: 1119

Session: 08655a84dbac40c2

Range: npt=0.000-

User-Agent: VLC media player (LIVE555 Streaming Media v2010.01.07)

RTSP/1.0 200 OK

CSeq: 1119

Date: Thu, 10 Jun 2010 13:57:06 GMT

Session: 08655a84dbac40c2

android NDK r4 release -> build option

2010-06-07T21:19:00.000+09:00

드디어 NDK r4 에 build 하는 과정을 볼 수 있네요...

r3 에서 거의 보기 힘들었는데.

toolchain 에 익숙한 분들이 debug 과정을 통해 configure Option 찾아내느라
수고가 많으셨던 것을 한번에 해결해 주네요...

1) NDK r3 에 output 입니다...

- NDK 설치 directory 에서 ... make APP=hello-gl2 입니다.

root@DEVEM:/export/home/android/ndk_x86# make APP=hello-gl2
Android NDK: Building for application 'hello-gl2'
Compile++ thumb: gl2jni <= apps/hello-gl2/project/jni/gl_code.cpp
SharedLibrary : libgl2jni.so
Install : libgl2jni.so => apps/hello-gl2/project/libs/armeabi

2) NDK r4 output 입니다.

- project directory 에서 ...

../../ndk-build 입니다. "../../" 에 NDK r4 가 설치되어 있기 때문입니다.

root@DEVEM:/export/home/android/android-ndk-r4/samples/hello-gl2# ../../ndk-build

Compile++ thumb: gl2jni <= /export/home/android/android-ndk-r4/samples/hello-gl2/jni/gl_code.cpp

SharedLibrary : libgl2jni.so

Install : libgl2jni.so => /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi

root@DEVEM:/export/home/android/android-ndk-r4/samples/hello-gl2#

3) NDK r4 에서 build 과정 상세히 보는 option 입니다...

- ./docs/NDK-BUILD.TXT 를 참조하세요.

- -B V=1 을 사용하면 상세한 build 과정을 볼 수 있습니다.

- executable build 를 위해서, 바로 전 내용을 참조하세요...

root@DEVEM:/export/home/android/android-ndk-r4/samples/hello-gl2# ../../ndk-build -B V=1

rm -f /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi/lib*.so /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi-v7a/lib*.so /export/home/android/android-ndk-r4/samples/hello-gl2/libs/x86/lib*.so

rm -f /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi/gdbserver /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi-v7a/gdbserver /export/home/android/android-ndk-r4/samples/hello-gl2/libs/x86/gdbserver

rm -f /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi/gdb.setup /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi-v7a/gdb.setup /export/home/android/android-ndk-r4/samples/hello-gl2/libs/x86/gdb.setup

Compile++ thumb: gl2jni <= /export/home/android/android-ndk-r4/samples/hello-gl2/jni/gl_code.cpp

/export/home/android/android-ndk-r4/build/prebuilt/linux-x86/arm-eabi-4.4.0/bin/arm-eabi-g++ -I/export/home/android/android-ndk-r4/build/platforms/android-5/arch-arm/usr/include -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtune=xscale -msoft-float -fno-exceptions -fno-rtti -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -I/export/home/android/android-ndk-r4/samples/hello-gl2/jni -DANDROID -Werror -Wa,--noexecstack -O2 -DNDEBUG -g -c -MMD -MP -MF /export/home/android/android-ndk-r4/samples/hello-gl2/bin/ndk/local/armeabi/objs/gl2jni/gl_code.o.d /export/home/android/android-ndk-r4/samples/hello-gl2/jni/gl_code.cpp -o /export/home/android/android-ndk-r4/samples/hello-gl2/bin/ndk/local/armeabi/objs/gl2jni/gl_code.o

SharedLibrary : libgl2jni.so

/export/home/android/android-ndk-r4/build/prebuilt/linux-x86/arm-eabi-4.4.0/bin/arm-eabi-gcc -nostdlib -Wl,-soname,libgl2jni.so -Wl,-shared,-Bsymbolic /export/home/android/android-ndk-r4/samples/hello-gl2/bin/ndk/local/armeabi/objs/gl2jni/gl_code.o -Wl,--whole-archive -Wl,--no-whole-archive /export/home/android/android-ndk-r4/build/prebuilt/linux-x86/arm-eabi-4.4.0/bin/../lib/gcc/arm-eabi/4.4.0/libgcc.a /export/home/android/android-ndk-r4/build/platforms/android-5/arch-arm/usr/lib/libc.so /export/home/android/android-ndk-r4/build/platforms/android-5/arch-arm/usr/lib/libstdc++.so /export/home/android/android-ndk-r4/build/platforms/android-5/arch-arm/usr/lib/libm.so -Wl,--no-undefined -Wl,-z,noexecstack -L/export/home/android/android-ndk-r4/build/platforms/android-5/arch-arm/usr/lib -llog -lGLESv2 -Wl,-rpath-link=/export/home/android/android-ndk-r4/build/platforms/android-5/arch-arm/usr/lib -o /export/home/android/android-ndk-r4/samples/hello-gl2/bin/ndk/local/armeabi/libgl2jni.so

Install : libgl2jni.so => /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi

mkdir -p /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi

install -p /export/home/android/android-ndk-r4/samples/hello-gl2/bin/ndk/local/armeabi/libgl2jni.so /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi/libgl2jni.so

/export/home/android/android-ndk-r4/build/prebuilt/linux-x86/arm-eabi-4.4.0/bin/arm-eabi-strip --strip-debug /export/home/android/android-ndk-r4/samples/hello-gl2/libs/armeabi/libgl2jni.so

root@DEVEM:/export/home/android/android-ndk-r4/samples/hello-gl2#

4) 사용 용도 ???

- 기존의 GNU Lib 등을 굳이 NDK 의 ndk-build 를 사용하지 않아도 됩니다.

- GNU 의 configure 에서 Option 만 적절히 준다면 ... 대부분은 쉽게 build 한 거죠..

android x86 ndk static build executable

2010-06-05T14:03:00.000+09:00

android 에서 ndk 가지고 뭔가 개발하려면 .. 환경이 아무리 좋다고 해도, 넘 불편 ..

나름 쉬운 조합과 실행 파일 함 만들어 봅니다...

0) 조합 ..

    - 단말 android x86 VM - 이것이 android phone 대용입니다.
     물론, sdk 에서 사용하는 emulrator 대용이기도 합니다.

    - 개발 Ubuntu VM - NDK / SDK 를 설치합니다.

    - 개발 ubuntu VM 을 NFS server 로 합니다.

    - 단말 android X86 VM 에서 nfs client 설정합니다.

1) android x86 을 설치합니다....

   - vmware 에서 잘 돌아갑니다.

2) android x86 사이트 ( http://www.android-x86.org/ ) 에서 X86 용 NDK 받아서

   LINUX 에 설치합니다. 아 이것이

- 저 같은 경우는, /export/home/android/ndk_x86 여기에 설치했네요.

root@DEVEM:/export/home/android/ndk_x86# ls -l

total 28

-rw-r--r-- 1 1001 1001 177 2009-12-10 03:53 Android.mk

drwxr-xr-x 7 1001 1001 4096 2009-12-10 03:53 apps

drwxr-xr-x 8 1001 1001 4096 2010-01-05 01:48 build

drwxr-xr-x 3 1001 1001 4096 2009-12-10 03:53 docs

-rw-r--r-- 1 1001 1001 670 2009-12-10 03:53 GNUmakefile

drwxr-xr-x 4 root root 4096 2010-04-11 05:16 out

-rw-r--r-- 1 1001 1001 1355 2009-12-10 03:53 README.TXT

3) source 수정

   /export/home/android/ndk_x86/apps/hello-jni/project/jni/hello-jni.c 이거 조금 수정합니다.

#include

#include

/* This is a trivial JNI example where we use a native method

* to return a new VM String. See the corresponding Java source

* file located at:

*

* apps/samples/hello-jni/project/src/com/example/HelloJni/HelloJni.java

*/

jstring

Java_com_example_hellojni_HelloJni_stringFromJNI( JNIEnv* env,

jobject thiz )

{

return (*env)->NewStringUTF(env, "Hello from JNI !");

}

// --- executable 을 위한 sample 코드 추가 부분
int main( int argc, char* args[] )

{

int i;

printf ( "argc : %d\n", argc );

for ( i = 0; i < argc; i++ ) {

printf ( "args : %s\n", *(args+i));

}

return 0;

}
//---------------------------------------------

4) Android.mk 수정

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := hello-jni

LOCAL_SRC_FILES := hello-jni.c

## include $(BUILD_SHARED_LIBRARY) <-- 이것이 기본입니다.

## include $(BUILD_STATIC_LIBRARY) <-- static 만드시려면 이것을 ..

include $(BUILD_EXECUTABLE) <-- 실행 파일입니다. 우리는 이것을 사용합니다.

5) 이제 compile 하죠 ... X86 용입니다.

direcotry 위치 : /export/home/android/ndk_x86 에서 아래와 같이 실행합니다.

make APP=hello-jni TARGET_PRODUCT=eeepc -B

TARGET_PRODUCT=eeepc 이거 제외하면, ARM 용 executable 생성됩니다.

결과가 아래와 같이 나옵니다...

root@DEVEM:/export/home/android/ndk_x86# make APP=hello-jni TARGET_PRODUCT=eeepc -B

Android NDK: Building for application 'hello-jni'

Compile thumb : hello-jni <= apps/hello-jni/project/jni/hello-jni.c

apps/hello-jni/project/jni/hello-jni.c: In function 'main':

apps/hello-jni/project/jni/hello-jni.c:37: warning: incompatible implicit declaration of built-in function 'printf'

Executable : hello-jni

Install : hello-jni => apps/hello-jni/project/libs/x86

root@DEVEM:/export/home/android/ndk_x86#

6) 정상 여부 확인 ..

우선, LINUX 의 file 명령어를 사용해세요... X86 용입니다.

root@DEVEM:/export/home/android/ndk_x86# file apps/hello-jni/project/libs/x86/hello-jni

apps/hello-jni/project/libs/x86/hello-jni: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), not stripped

root@DEVEM:/export/home/android/ndk_x86#

7) 이것을 .. Android X86 에서 확인하기 위해서 ...

a) UBUNTU 에서 NFS 서버 설정합니다.

    - 이것은 LINUX version 따라 다릅니다...
    - 저는 편이상 아래와 같이 설정합니다.

root@DEVEM:/etc# more exports

# /etc/exports: the access control list for filesystems which may be exported

# to NFS clients. See exports(5).

#

# Example for NFSv2 and NFSv3:

# /srv/homes hostname1(rw,sync) hostname2(ro,sync)

#

# Example for NFSv4:

# /srv/nfs4 gss/krb5i(rw,sync,fsid=0,crossmnt)

# /srv/nfs4/homes gss/krb5i(rw,sync)

#

/export/home *(rw,insecure,async,no_root_squash)

   - 다음으로 ...
root@DEVEM:/etc/init.d# ./nfs-kernel-server restart

* Stopping NFS kernel daemon [ OK ]

* Unexporting directories for NFS kernel daemon... [ OK ]

* Exporting directories for NFS kernel daemon... exportfs: /etc/exports [2]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/export/home".

Assuming default behaviour ('no_subtree_check').

NOTE: this default has changed since nfs-utils version 1.0.x

[ OK ]

* Starting NFS kernel daemon [ OK ]

root@DEVEM:/etc/init.d#

이렇게 하구요...

    b) Android X86 에서 ...

    - NFS enable 하기는 .. http://www.android-x86.org/documents/nfs-how-to 여기를 참조하세요.

    - 시작할 때, debug mode 로 올리면 좋습니다.

   - 다음으로, android X86 에서 "Alt-F1" 을 누르면, console mode 로 넘어갑니다.

   - 거기에서 아래와 같이 합니다.

      cd /
      mkdir /sdcard
     mount -t nfs -o nolock 192.168.229.132:/export/home /sdcard

    - 이제 실행 준비가 되었네요 ... 마지막으로 실행해 보면 ...

              네 .. executable 로 되어서 실행이 됩니다.



8) 왜 이런 복잡한 일을 ????

   - android 의 특성상 NDK 를 사용할 일이 종종있습니다.
     UI 개발하는 분이라면 관심이 없겠지만

   9) 이런 모른 test 를 다 완료하고 나서 ...

   - ARM 으로 동일하게 compile 해서 emulrator 나 phone 에서 확인하면 됩니다...

vlc, android, mediaplay, rtsp

2010-06-05T12:28:00.000+09:00

vlc 를 android 와 연동해서 streaming 하려면 ...

1) vlc 에서 streaming 하기 ..

    option 이 복잡하죠 ... mpeg4 video 에 mp4 audio 사용합니다.
   android 에서 rtsp/rtp 를 사용한 streaming 이 가능합니다.

:sout=#transcode{ab=128,samplerate=44100,channels=2,acodec=mp4a,vcodec=mp4v,vb=800,fps=25}:rtp{sdp=rtsp://192.168.229.1:5554/stream.sdp}

2) vlc 에서 해당 streaming 이 정상인지 먼저 봅니다...

- vlc 를 하나 더 띄우세요.
- 다음으로 Open Media-> network 을 선택하고,아래와 같이 URL 을 넣습니다.

   rtsp://192.168.1.169:5554/stream.sdp

- 일단 play 가 되면, VLC 에서 streaming 이 정상인 겁니다.

3) android phone 에서 ..

- 흠 .. 이것은 코드가 되어야 하는데 ...
- 기본코드는  Android VideoView 데모 여기를 보시면 됩니다.

- 해당 기본 코드에 이 부분만 수정해 주면 됩니다.

mVideoView.setVideoURI( Uri.parse("rtsp://192.168.229.1:5554/stream.sdp"));

vlc streaming 은 android phone / android x86/ 등에서 잘 연동이 됩니다.
문제는 정작 되어야 할 emulrator 에서 설정이 좀 힘들죠..

4) android SDK 에서 vlc streaming ..

  android SDK 에서 제공하는 emulator 로 보려면, network 설정을 해야 합니다.
좀 복잡하죠. 이것은 담번에 ..

이런 복잡한 것이 싫으신 분은 ... WINDOWS / LINUX VM 에 android-x86 을 사용하면 됩니다. 복잡하죠 ..

뭔가 간단한 것이 없네요.. 환경설정 / 여러 Tool .

ffserver, streaming, ffplay , rtsp/rtp

2010-06-05T11:22:00.000+09:00

기억이 나는 일들을 적어 봐야 겠다...

streaming 방법이 여러가지인데, ffmpeg 을 사용해봤다.

0) ffserver : windows 불가, LINUX 만 된단다.

a) ffserver 는 LINUX 에서 ,
b) ffplay 는 NT 에서 ...
c) 환경은,
- WINDOWS : ffmpeg
- WINDOWS 에 vmware 설치 - LINUX 설치
- LINUX VM 위에 ffmpeg 설치

1) server 에서 : ffserver.conf RTSP enable

a)

RTSPPort 5454
RTSPBindAddress 0.0.0.0

conf 파일에는 이 내용이 없다. 따라서, 반듯이 추가 ..

b) 아래와 같이 넣어 준다.

ffserver.conf 중간에 보면 .. mpeg, mpegvideo, mp2, ogg, asf, swf 된단다.
mp4 는 않되는 것 같다. 뭔가 수정을 해야 할 듯

Format rtp
File "/export/home/x86native/bin/tv_dump.mpg"

c) ffserver 실행 ..

- 아래에 opening file 이 해당 내용 읽은 거다.

root@DEVEM:/export/home/x86native/bin# ./ffserver -f ffserver.conf
FFserver version SVN-r23169-snapshot, Copyright (c) 2000-2010 the FFmpeg developers
built on Jun 4 2010 10:37:29 with gcc 4.2.3 (Ubuntu 4.2.3-2ubuntu7)
configuration: --prefix=/export/home/x86native
libavutil 50.15. 2 / 50.15. 2
libavcodec 52.67. 2 / 52.67. 2
libavformat 52.62. 0 / 52.62. 0
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.20. 0 / 1.20. 0
libswscale 0.10. 0 / 0.10. 0
Fri Jun 4 22:27:59 2010 Opening file '/export/home/x86native/bin/tv_dump.mpg'
Fri Jun 4 22:27:59 2010 [mpeg @ 0x8b2b090]max_analyze_duration reached
Fri Jun 4 22:27:59 2010 Opening file '/export/home/x86native/bin/tv_dump.mp4'
Fri Jun 4 22:27:59 2010 Opening file '/export/home/x86native/bin/tv_dump.mpg'
Fri Jun 4 22:27:59 2010 [mpeg @ 0x8b2b090]max_analyze_duration reached
Fri Jun 4 22:27:59 2010 FFserver started.

2) ffplay - windows 에서

ffplay rtsp://192.168.229.132:5454/test1-rtsp.mpg

물론, IP 는 LINUX IP, Port 는 RTSP port 다
test1-rtsp.mpg 은 위에서 설정한 URL.

3) 실행을 하면 아래와 비슷한 형태의 로그가 나온다...

Server 에서 로그 ...

Fri Jun 4 22:32:54 2010 [NULL @ 0x8b2dcc0]AAC with no global headers is currently not supported.
Fri Jun 4 22:32:55 2010 [mpeg @ 0x8b38e20]max_analyze_duration reached
Fri Jun 4 22:32:55 2010 192.168.229.1:5000 - - "PLAY test1-rtsp.mpg/streamid=0 RTP/UDP"
Fri Jun 4 22:32:55 2010 192.168.229.1:5002 - - "PLAY test1-rtsp.mpg/streamid=1 RTP/UDP"

Client 에서 ...

화면이 떠서, 뭔가 play 가 되어야 한다.