If you’d like svn to ignore the content of a sub-directory /svn-local-copy/sub-directory-to-ignore, then you could issue the following two commands:
cd /svn-local-copy/sub-directory-to-ignore svn propset svn:ignore * .
If you’d like to remove all the .svn directories in your local SVN working copy from the command line and for example your local working copy is in the directory /svn-co-work-copy, then you could issue the following two commands:
cd /svn-co-work-copy rm -rf `find -type d -name .svn`
If you’d like to move your repository in your local SVN working copy from the command line from for example https://svn.oldhost.com to https://svn.newhost.com and your local working copy is in the directory /svn-co-work-copy, then you could issue the following two commands:
cd /svn-co-work-copy find -name entries |xargs perl -pi -e 's/https\:\/\/svn\.oldhost\.com/https\:\/\/svn\.newhost\.com/g'
Mobile Intel 945 Express Chipset
HDA (high definition audio specification by intel)
Intel I/O Controller Hub 7 (ICH7)
Realtek ALC888T codec
With the following patch you could reduce the white noise in the alsa sound library using libspeex:
diff -r alsa-lib-1.0.21a/configure alsa-lib-1.0.21a.working/configure
9731c9731
< LIBS="-ldl $LIBS"
---
> LIBS="-lspeexdsp -ldl $LIBS"
20938c20938
< ALSA_DEPLIBS="$ALSA_DEPLIBS -ldl"
---
> ALSA_DEPLIBS="$ALSA_DEPLIBS -lspeexdsp -ldl"
diff -r alsa-lib-1.0.21a/src/pcm/pcm.c alsa-lib-1.0.21a.working/src/pcm/pcm.c
641a642,644
> #include <speex/speex_preprocess.h>
> SpeexPreprocessState *speex_state = NULL;
>
693a697,700
> if( speex_state != NULL ) {
> speex_preprocess_state_destroy( speex_state );
> speex_state = NULL;
> }
1300a1308
> snd_pcm_sframes_t sframest;
1311c1319,1336
< return _snd_pcm_readi(pcm, buffer, size);
---
> sframest = _snd_pcm_readi(pcm, buffer, size);
>
> if( speex_state == NULL ){
> speex_state = speex_preprocess_state_init( (int) size, 8000 );
> if( speex_state != NULL ){
> int denoise = 1;
> speex_preprocess_ctl( speex_state, SPEEX_PREPROCESS_SET_DENOISE, &denoise );
> int noise_suppress = 2555;
> speex_preprocess_ctl( speex_state, SPEEX_PREPROCESS_SET_NOISE_SUPPRESS, &noise_suppress);
> int agc_enabled = 0;
> speex_preprocess_ctl( speex_state, SPEEX_PREPROCESS_SET_AGC, &agc_enabled);
> }
> }
> if( speex_state != NULL ){
> speex_preprocess_run( speex_state, (short*)buffer );
> }
>
> return sframest;
Below is just a reminder of the call stack for one PCM read request:
./linphone-3.1.2/mediastreamer2/src#
vim alsa.c
...
result = alsa_read( fd, buf, count );
...
int alsa_read( snd_pcm_t* handle, buf, count){
result = snd_pcm_readi(fd, buf, count);
}
/lib/modules/2.6.29/build/audio/realtek-linux-audiopack-5.13/alsa-lib-1.0.21a#
Library: /lib/modules/2.6.29/build/audio/realtek-linux-audiopack-5.13/alsa-lib-1.0.21a/src/pcm/libpcm.a
vim ./src/pcm/pcm_hw.c
snd_pcm_frames_t snd_pcm_readi( fd, buf, count){
struct sndrv_xferi xferi;
xferi.buf = buf,
xferi.frames = count;
xferi.result = 0;
err = ioctl( fd, SNDRV_PCM_IOCTL_READI_FRAMES, &xferi );
if( err < 0 )
return err;
return xferi.result;
}
/lib/modules/2.6.29/build/audio/realtek-linux-audiopack-5.13/alsa-driver-1.0.21#
Library: /lib/modules/2.6.29/kernel/sound/acore/snd-pcm.ko
vim ./alsa-kernel/core/pcm_native.c
2643static int snd_pcm_capture_ioctl1(struct file *file,
2644 struct snd_pcm_substream *substream,
2645 unsigned int cmd, void __user *arg)
case SNDRV_PCM_IOCTL_READI_FRAMES:
{
result = snd_pcm_lib_read(substream,buf,count)
}
case SNDRV_PCM_IOCTL_READN_FRAMES:
{
result = snd_pcm_lib_readv(substream,buf,frames)
}
ssize_t snd_pcm_read( fd, buf, count, offset){
result = snd_pcm_lib_read(substream,buf,count)
}
vim ./alsa-kernel/core/pcm_lib.c
Library: /lib/modules/2.6.29/kernel/sound/acore/snd-pcm.ko
snd_pcm_sframes_t snd_pcm_lib_read( substream, buf, count ){
snd_pcm_lib_read1( substream, buf, count, nonblock, snd_pcm_lib_reader_transfer);
}
snd_pcm_sframes_t snd_pcm_lib_read1( substream, buf, count, nonblock, transfer){
transfer( substream, appl_ofs, buf, offset, frames );
??? ---> ???
}
vim ./alsa-kernel/pci/hda/patch_realtek.c
Library: /lib/modules/2.6.29/kernel/sound/pci/hda/snd-hda-codec-realtek.ko
printk(KERN_INFO "hda_codec3: %s: BIOS AUTO-PROBING3.\n",
