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

This commit is contained in:
Gildas Bazin 2005-12-01 19:01:48 +00:00
parent 9a675ed8b7
commit 507fe5c1c3
1 changed files with 8 additions and 64 deletions
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72
modules/audio_filter/converter/a52tospdif.c
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@ -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