* modules/audio_filter/converter/a52tospdif.c: remove useless cruft.

modules/audio_filter/converter/a52tospdif.c

@@ -44,54 +44,6 @@ static int  Create    ( vlc_object_t * );
 static void DoWork    ( aout_instance_t *, aout_filter_t *, aout_buffer_t *,
                         aout_buffer_t * );
 
-struct frmsize_s
-{
-  uint16_t bit_rate;
-  uint16_t frm_size[3];
-};
-
-static const struct frmsize_s frmsizecod_tbl[64] =
-{
-  { 32  ,{64   ,69   ,96   } },
-  { 32  ,{64   ,70   ,96   } },
-  { 40  ,{80   ,87   ,120  } },
-  { 40  ,{80   ,88   ,120  } },
-  { 48  ,{96   ,104  ,144  } },
-  { 48  ,{96   ,105  ,144  } },
-  { 56  ,{112  ,121  ,168  } },
-  { 56  ,{112  ,122  ,168  } },
-  { 64  ,{128  ,139  ,192  } },
-  { 64  ,{128  ,140  ,192  } },
-  { 80  ,{160  ,174  ,240  } },
-  { 80  ,{160  ,175  ,240  } },
-  { 96  ,{192  ,208  ,288  } },
-  { 96  ,{192  ,209  ,288  } },
-  { 112 ,{224  ,243  ,336  } },
-  { 112 ,{224  ,244  ,336  } },
-  { 128 ,{256  ,278  ,384  } },
-  { 128 ,{256  ,279  ,384  } },
-  { 160 ,{320  ,348  ,480  } },
-  { 160 ,{320  ,349  ,480  } },
-  { 192 ,{384  ,417  ,576  } },
-  { 192 ,{384  ,418  ,576  } },
-  { 224 ,{448  ,487  ,672  } },
-  { 224 ,{448  ,488  ,672  } },
-  { 256 ,{512  ,557  ,768  } },
-  { 256 ,{512  ,558  ,768  } },
-  { 320 ,{640  ,696  ,960  } },
-  { 320 ,{640  ,697  ,960  } },
-  { 384 ,{768  ,835  ,1152 } },
-  { 384 ,{768  ,836  ,1152 } },
-  { 448 ,{896  ,975  ,1344 } },
-  { 448 ,{896  ,976  ,1344 } },
-  { 512 ,{1024 ,1114 ,1536 } },
-  { 512 ,{1024 ,1115 ,1536 } },
-  { 576 ,{1152 ,1253 ,1728 } },
-  { 576 ,{1152 ,1254 ,1728 } },
-  { 640 ,{1280 ,1393 ,1920 } },
-  { 640 ,{1280 ,1394 ,1920 } }
-};
-
 /*****************************************************************************
  * Module descriptor
  *****************************************************************************/
@@ -129,43 +81,35 @@ static int Create( vlc_object_t *p_this )
 static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
                     aout_buffer_t * p_in_buf, aout_buffer_t * p_out_buf )
 {
-    /* AC3 is natively big endian. Most SPDIF devices have the native endianness of
-     * the computersystem. On MAc OS X however, little endian devices are also common.
+    /* AC3 is natively big endian. Most SPDIF devices have the native
+     * endianness of the computersystem.
+     * On MAc OS X however, little endian devices are also common.
      */
-    uint32_t i_syncword, i_crc1, i_fscod, i_frmsizecod, i_bsid, i_bsmod, i_frame_size;
     static const uint8_t p_sync_le[6] = { 0x72, 0xF8, 0x1F, 0x4E, 0x01, 0x00 };
     static const uint8_t p_sync_be[6] = { 0xF8, 0x72, 0x4E, 0x1F, 0x00, 0x01 };
 #ifndef HAVE_SWAB
     byte_t * p_tmp;
     uint16_t i;
 #endif
+    uint16_t i_frame_size = p_in_buf->i_nb_bytes / 2;
     byte_t * p_in = p_in_buf->p_buffer;
     byte_t * p_out = p_out_buf->p_buffer;
 
-    /* AC3 header decode */
-    i_syncword = p_in[0] | (p_in[1] << 8);
-    i_crc1 = p_in[2] | (p_in[3] << 8);
-    i_fscod = (p_in[4] >> 6) & 0x3;
-    i_frmsizecod = p_in[4] & 0x3f;
-    i_bsid = (p_in[5] >> 3) & 0x1f;
-    i_bsmod = p_in[5] & 0x7;
-    i_frame_size = frmsizecod_tbl[i_frmsizecod].frm_size[i_fscod];
-    
     /* Copy the S/PDIF headers. */
     if( p_filter->output.i_format == VLC_FOURCC('s','p','d','b') )
     {
         p_filter->p_vlc->pf_memcpy( p_out, p_sync_be, 6 );
-        p_out[4] = i_bsmod;
-        p_out[6] = ((i_frame_size ) >> 4) & 0xff;
+        p_out[4] = p_in[5] & 0x7; /* bsmod */
+        p_out[6] = (i_frame_size >> 4) & 0xff;
         p_out[7] = (i_frame_size << 4) & 0xff;
         p_filter->p_vlc->pf_memcpy( &p_out[8], p_in, i_frame_size * 2 );
     }
     else
     {
         p_filter->p_vlc->pf_memcpy( p_out, p_sync_le, 6 );
-        p_out[5] = i_bsmod;
+        p_out[5] = p_in[5] & 0x7; /* bsmod */
         p_out[6] = (i_frame_size << 4) & 0xff;
-        p_out[7] = ((i_frame_size ) >> 4) & 0xff;
+        p_out[7] = (i_frame_size >> 4) & 0xff;
 #ifdef HAVE_SWAB
         swab( p_in, &p_out[8], i_frame_size * 2 );
 #else