[vlc-devel] [vlc-commits] Revert "Port to new libmpcdec API"

Jean-Baptiste Kempf jb at videolan.org
Wed Jul 11 19:37:49 CEST 2018


NB: this will mean that in 99% of the cases, this will not compile with your "modern" mpc library.

Feel free to correctly port this module to the new library


On Wed, 11 Jul 2018, at 19:36, Jean-Baptiste Kempf wrote:
> vlc | branch: master | Jean-Baptiste Kempf <jb at videolan.org> | Wed Jul 
> 11 19:32:20 2018 +0200| [e20677966fb7729f9be5732fbc847868d7bb4a0d] | 
> committer: Jean-Baptiste Kempf
> 
> Revert "Port to new libmpcdec API"
> 
> This reverts commit 87cb4e591ac075c7fabc395cf997e0b261296007.
> 
> > http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=e20677966fb7729f9be5732fbc847868d7bb4a0d
> ---
> 
>  configure.ac        |   7 +---
>  modules/demux/mpc.c | 119 ++++------------------------------------------------
>  2 files changed, 10 insertions(+), 116 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index 6ec557bc14..36252aaff8 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -2164,12 +2164,9 @@ AC_ARG_ENABLE(mpc,
>    [AS_HELP_STRING([--disable-mpc], [do not use libmpcdec (default auto)])])
>  if test "${enable_mpc}" != "no"
>  then
> -  AC_CHECK_HEADERS([mpc/mpcdec.h], [
> +    AC_CHECK_HEADERS([mpcdec/mpcdec.h], [
>      VLC_ADD_PLUGIN([mpc])
> -    VLC_ADD_LIBS([mpc],[-lmpcdec])],
> -    [AC_CHECK_HEADERS([mpcdec/mpcdec.h], [
> -    VLC_ADD_PLUGIN([mpc])
> -    VLC_ADD_LIBS([mpc],[-lmpcdec])])])
> +    VLC_ADD_LIBS([mpc],[-lmpcdec])])
>  fi
>  
>  dnl
> diff --git a/modules/demux/mpc.c b/modules/demux/mpc.c
> index b665ea078a..9a31e2098a 100644
> --- a/modules/demux/mpc.c
> +++ b/modules/demux/mpc.c
> @@ -36,11 +36,7 @@
>  #include <vlc_codec.h>
>  #include <math.h>
>  
> -#ifdef HAVE_MPC_MPCDEC_H
> -#include <mpc/mpcdec.h>
> -#else
>  #include <mpcdec/mpcdec.h>
> -#endif
>  
>  /* TODO:
>   *  - test stream version 4..6
> @@ -79,11 +75,7 @@ typedef struct
>      es_out_id_t   *p_es;
>  
>      /* */
> -#ifndef HAVE_MPC_MPCDEC_H
>      mpc_decoder    decoder;
> -#else
> -    mpc_demux     *decoder;
> -#endif
>      mpc_reader     reader;
>      mpc_streaminfo info;
>  
> @@ -91,19 +83,11 @@ typedef struct
>      int64_t        i_position;
>  } demux_sys_t;
>  
> -#ifndef HAVE_MPC_MPCDEC_H
>  static mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t 
> i_size );
>  static mpc_bool_t  ReaderSeek( void *p_private, mpc_int32_t i_offset );
>  static mpc_int32_t ReaderTell( void *p_private);
>  static mpc_int32_t ReaderGetSize( void *p_private );
>  static mpc_bool_t  ReaderCanSeek( void *p_private );
> -#else
> -static mpc_int32_t ReaderRead( mpc_reader *p_private, void *dst, 
> mpc_int32_t i_size );
> -static mpc_bool_t  ReaderSeek( mpc_reader *p_private, mpc_int32_t 
> i_offset );
> -static mpc_int32_t ReaderTell( mpc_reader *p_private);
> -static mpc_int32_t ReaderGetSize( mpc_reader *p_private );
> -static mpc_bool_t  ReaderCanSeek( mpc_reader *p_private );
> -#endif
>  
>  /*****************************************************************************
>   * Open: initializes ES structures
> @@ -118,15 +102,11 @@ static int Open( vlc_object_t * p_this )
>      if( vlc_stream_Peek( p_demux->s, &p_peek, 4 ) < 4 )
>          return VLC_EGENERIC;
>  
> -    if( memcmp( p_peek, "MP+", 3 )
> -#ifdef HAVE_MPC_MPCDEC_H
> -        /* SV8 format */
> -        && memcmp( p_peek, "MPCK", 4 )
> -#endif
> -      )
> +    if( memcmp( p_peek, "MP+", 3 ) )
>      {
>          /* for v4..6 we check extension file */
>          const int i_version = (GetDWLE( p_peek ) >> 11)&0x3ff;
> +
>          if( i_version  < 4 || i_version > 6 )
>              return VLC_EGENERIC;
>  
> @@ -154,7 +134,6 @@ static int Open( vlc_object_t * p_this )
>      p_sys->reader.canseek = ReaderCanSeek;
>      p_sys->reader.data = p_demux;
>  
> -#ifndef HAVE_MPC_MPCDEC_H
>      /* Load info */
>      mpc_streaminfo_init( &p_sys->info );
>      if( mpc_streaminfo_read( &p_sys->info, &p_sys->reader ) != ERROR_CODE_OK )
> @@ -164,13 +143,6 @@ static int Open( vlc_object_t * p_this )
>      mpc_decoder_setup( &p_sys->decoder, &p_sys->reader );
>      if( !mpc_decoder_initialize( &p_sys->decoder, &p_sys->info ) )
>          goto error;
> -#else
> -    p_sys->decoder = mpc_demux_init( &p_sys->reader );
> -    if( !p_sys->decoder )
> -        goto error;
> -
> -    mpc_demux_get_info( p_sys->decoder, &p_sys->info );
> -#endif
>  
>      /* Fill p_demux fields */
>      p_demux->pf_demux = Demux;
> @@ -239,10 +211,6 @@ static void Close( vlc_object_t * p_this )
>      demux_t        *p_demux = (demux_t*)p_this;
>      demux_sys_t    *p_sys = p_demux->p_sys;
>  
> -#ifdef HAVE_MPC_MPCDEC_H
> -    if( p_sys->decoder )
> -    mpc_demux_exit( p_sys->decoder );
> -#endif
>      free( p_sys );
>  }
>  
> @@ -256,15 +224,12 @@ static int Demux( demux_t *p_demux )
>      demux_sys_t *p_sys = p_demux->p_sys;
>      block_t     *p_data;
>      int i_ret;
> -#ifdef HAVE_MPC_MPCDEC_H
> -    mpc_frame_info frame;
> -    mpc_status err;
> -#endif
> -    p_data = 
> block_Alloc( MPC_DECODER_BUFFER_LENGTH*sizeof(MPC_SAMPLE_FORMAT) );
> +
> +    p_data = block_New( p_demux,
> +                        
> MPC_DECODER_BUFFER_LENGTH*sizeof(MPC_SAMPLE_FORMAT) );
>      if( !p_data )
>          return VLC_DEMUXER_EGENERIC;
>  
> -#ifndef HAVE_MPC_MPCDEC_H
>      i_ret = mpc_decoder_decode( &p_sys->decoder,
>                                  (MPC_SAMPLE_FORMAT*)p_data->p_buffer,
>                                  NULL, NULL );
> @@ -273,22 +238,6 @@ static int Demux( demux_t *p_demux )
>          block_Release( p_data );
>          return i_ret < 0 ? VLC_DEMUXER_EGENERIC : VLC_DEMUXER_EOF;
>      }
> -#else
> -    frame.buffer = (MPC_SAMPLE_FORMAT*)p_data->p_buffer;
> -    err = mpc_demux_decode( p_sys->decoder, &frame );
> -    if( err != MPC_STATUS_OK )
> -    {
> -        block_Release( p_data );
> -        return VLC_DEMUXER_EGENERIC;
> -    }
> -    else if( frame.bits == -1 )
> -    {
> -        block_Release( p_data );
> -        return VLC_DEMUXER_EOF;
> -    }
> -
> -    i_ret = frame.samples;
> -#endif
>  
>      /* */
>      p_data->i_buffer = i_ret * sizeof(MPC_SAMPLE_FORMAT) * p_sys-
> >info.channels;
> @@ -327,27 +276,15 @@ static int Control( demux_t *p_demux, int i_query, 
> va_list args )
>  
>          case DEMUX_GET_LENGTH:
>              pi64 = va_arg( args, int64_t * );
> -#ifndef HAVE_MPC_MPCDEC_H
>              *pi64 = CLOCK_FREQ * p_sys->info.pcm_samples /
>                          p_sys->info.sample_freq;
> -#else
> -            *pi64 = CLOCK_FREQ * (p_sys->info.samples -
> -                                        p_sys->info.beg_silence) /
> -                p_sys->info.sample_freq;
> -#endif
>              return VLC_SUCCESS;
>  
>          case DEMUX_GET_POSITION:
>              pf = va_arg( args, double * );
> -#ifndef HAVE_MPC_MPCDEC_H
> -            if( p_sys->info.pcm_samples > 0 )
> -                *pf = (double) p_sys->i_position /
> -                      (double)p_sys->info.pcm_samples;
> -#else
> -            if( p_sys->info.samples - p_sys->info.beg_silence > 0)
> -                *pf = (double) p_sys->i_position /
> -                      (double)(p_sys->info.samples - p_sys-
> >info.beg_silence);
> -#endif
> +            pi64 = (int64_t*)va_arg( args, int64_t * );
> +            *pi64 = INT64_C(1000000) * p_sys->info.pcm_samples /
> +                        p_sys->info.sample_freq;
>              else
>                  *pf = 0.0;
>              return VLC_SUCCESS;
> @@ -360,14 +297,8 @@ static int Control( demux_t *p_demux, int i_query, 
> va_list args )
>  
>          case DEMUX_SET_POSITION:
>              f = va_arg( args, double );
> -#ifndef HAVE_MPC_MPCDEC_H
>              i64 = (int64_t)(f * p_sys->info.pcm_samples);
>              if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) )
> -#else
> -            i64 = (int64_t)(f * (p_sys->info.samples -
> -                                 p_sys->info.beg_silence));
> -            if( mpc_demux_seek_sample( p_sys->decoder, i64 ) == 
> MPC_STATUS_OK )
> -#endif
>              {
>                  p_sys->i_position = i64;
>                  return VLC_SUCCESS;
> @@ -376,11 +307,7 @@ static int Control( demux_t *p_demux, int i_query, 
> va_list args )
>  
>          case DEMUX_SET_TIME:
>              i64 = va_arg( args, int64_t );
> -#ifndef HAVE_MPC_MPCDEC_H
>              if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) )
> -#else
> -             if( mpc_demux_seek_sample( p_sys->decoder, i64 ) == 
> MPC_STATUS_OK )
> -#endif
>              {
>                  p_sys->i_position = i64;
>                  return VLC_SUCCESS;
> @@ -398,63 +325,33 @@ static int Control( demux_t *p_demux, int i_query, 
> va_list args )
>      }
>  }
>  
> -#ifndef HAVE_MPC_MPCDEC_H
>  static mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t 
> i_size )
>  {
>      demux_t *p_demux = (demux_t*)p_private;
> -#else
> -static mpc_int32_t ReaderRead( mpc_reader *p_private, void *dst, 
> mpc_int32_t i_size )
> -{
> -    demux_t *p_demux = (demux_t*)p_private->data;
> -#endif
>      return vlc_stream_Read( p_demux->s, dst, i_size );
>  }
>  
> -#ifndef HAVE_MPC_MPCDEC_H
>  static mpc_bool_t ReaderSeek( void *p_private, mpc_int32_t i_offset )
>  {
>      demux_t *p_demux = (demux_t*)p_private;
> -#else
> -static mpc_bool_t ReaderSeek( mpc_reader *p_private, mpc_int32_t i_offset )
> -{
> -    demux_t *p_demux = (demux_t*)p_private->data;
> -#endif
>      return !vlc_stream_Seek( p_demux->s, i_offset );
>  }
>  
> -#ifndef HAVE_MPC_MPCDEC_H
>  static mpc_int32_t ReaderTell( void *p_private)
>  {
>      demux_t *p_demux = (demux_t*)p_private;
> -#else
> -static mpc_int32_t ReaderTell( mpc_reader *p_private)
> -{
> -    demux_t *p_demux = (demux_t*)p_private->data;
> -#endif
>      return vlc_stream_Tell( p_demux->s );
>  }
>  
> -#ifndef HAVE_MPC_MPCDEC_H
>  static mpc_int32_t ReaderGetSize( void *p_private )
>  {
>      demux_t *p_demux = (demux_t*)p_private;
> -#else
> -static mpc_int32_t ReaderGetSize( mpc_reader *p_private )
> -{
> -    demux_t *p_demux = (demux_t*)p_private->data;
> -#endif
>      return stream_Size( p_demux->s );
>  }
>  
> -#ifndef HAVE_MPC_MPCDEC_H
>  static mpc_bool_t ReaderCanSeek( void *p_private )
>  {
>      demux_t *p_demux = (demux_t*)p_private;
> -#else
> -static mpc_bool_t ReaderCanSeek( mpc_reader *p_private )
> -{
> -    demux_t *p_demux = (demux_t*)p_private->data;
> -#endif
>      bool b_canseek;
>  
>      vlc_stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_canseek );
> 
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-- 
Jean-Baptiste Kempf -  President
+33 672 704 734


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