Commit ae2132b5 authored by Laurent Aimar's avatar Laurent Aimar

Allows selecting CC as soon as possible.

Previously, it was possible only on the first subtitle.
The drawback is that we may allow selecting channels that are empty.
parent e6825471
......@@ -45,18 +45,6 @@ typedef struct
uint8_t p_data[CC_MAX_DATA_SIZE];
} cc_data_t;
static inline int cc_Channel( int i_field, const uint8_t p_data[2] )
{
const uint8_t d = p_data[0] & 0x7f;
if( i_field != 0 && i_field != 1 )
return -1;
if( d == 0x14 )
return 2*i_field + 0;
else if( d == 0x1c )
return 2*i_field + 1;
/* unknown(middle of a command) or not cc channel */
return -1;
}
static inline void cc_Init( cc_data_t *c )
{
int i;
......@@ -75,6 +63,20 @@ static inline void cc_Flush( cc_data_t *c )
{
c->i_data = 0;
}
static inline void cc_AppendData( cc_data_t *c, int i_field, const uint8_t cc[2] )
{
if( i_field == 0 || i_field == 1 )
{
c->pb_present[2*i_field+0] =
c->pb_present[2*i_field+1] = true;
}
c->p_data[c->i_data++] = i_field;
c->p_data[c->i_data++] = cc[0];
c->p_data[c->i_data++] = cc[1];
}
static inline void cc_Extract( cc_data_t *c, const uint8_t *p_src, int i_src )
{
static const uint8_t p_cc_ga94[4] = { 0x47, 0x41, 0x39, 0x34 };
......@@ -129,7 +131,6 @@ static inline void cc_Extract( cc_data_t *c, const uint8_t *p_src, int i_src )
for( i = 0; i < i_count_cc; i++, cc += 3 )
{
int i_field = cc[0] & 0x03;
int i_channel;
if( ( cc[0] & 0xfc ) != 0xfc )
continue;
if( i_field != 0 && i_field != 1 )
......@@ -137,13 +138,7 @@ static inline void cc_Extract( cc_data_t *c, const uint8_t *p_src, int i_src )
if( c->i_data + 3 > CC_MAX_DATA_SIZE )
continue;
i_channel = cc_Channel( i_field, &cc[1] );
if( i_channel >= 0 && i_channel < 4 )
c->pb_present[i_channel] = true;
c->p_data[c->i_data++] = i_field;
c->p_data[c->i_data++] = cc[1];
c->p_data[c->i_data++] = cc[2];
cc_AppendData( c, i_field, &cc[1] );
}
c->b_reorder = true;
}
......@@ -164,7 +159,6 @@ static inline void cc_Extract( cc_data_t *c, const uint8_t *p_src, int i_src )
for( j = 0; j < 2; j++, cc += 3 )
{
const int i_field = j == i_field_first ? 0 : 1;
int i_channel;
if( b_truncate && i == i_count_cc2 - 1 && j == 1 )
break;
......@@ -173,12 +167,7 @@ static inline void cc_Extract( cc_data_t *c, const uint8_t *p_src, int i_src )
if( c->i_data + 3 > CC_MAX_DATA_SIZE )
continue;
i_channel = cc_Channel( i_field, &cc[1] );
if( i_channel >= 0 && i_channel < 4 )
c->pb_present[i_channel] = true;
c->p_data[c->i_data++] = i_field;
c->p_data[c->i_data++] = cc[1];
c->p_data[c->i_data++] = cc[2];
cc_AppendData( c, i_field, &cc[1] );
}
}
c->b_reorder = false;
......@@ -196,12 +185,8 @@ static inline void cc_Extract( cc_data_t *c, const uint8_t *p_src, int i_src )
for( i = 0; i < 2; i++, cc += 4 )
{
const int i_field = i == 0 ? 1 : 0;
int i_channel = cc_Channel( i_field, &cc[2] );
if( i_channel >= 0 && i_channel < 4 )
c->pb_present[i_channel] = true;
c->p_data[c->i_data++] = i_field;
c->p_data[c->i_data++] = cc[2];
c->p_data[c->i_data++] = cc[3];
cc_AppendData( c, i_field, &cc[2] );
}
c->b_reorder = false;
}
......@@ -231,13 +216,8 @@ static inline void cc_Extract( cc_data_t *c, const uint8_t *p_src, int i_src )
continue;
const int i_field = i_field_idx - 1;
const int i_channel = cc_Channel( i_field, cc );
if( i_channel >= 0 && i_channel < 4 )
c->pb_present[i_channel] = true;
c->p_data[c->i_data++] = i_field;
c->p_data[c->i_data++] = cc[0];
c->p_data[c->i_data++] = cc[1];
cc_AppendData( c, i_field, &cc[0] );
}
c->b_reorder = true;
}
......
......@@ -116,7 +116,7 @@ static const uint8_t ty_AC3AudioPacket[] = { 0x00, 0x00, 0x01, 0xbd };
typedef struct
{
long l_rec_size;
uint8_t ex1, ex2;
uint8_t ex[2];
uint8_t rec_type;
uint8_t subrec_type;
bool b_ext;
......@@ -1016,7 +1016,6 @@ static int DemuxRecCc( demux_t *p_demux, ty_rec_hdr_t *rec_hdr, block_t *p_block
{
demux_sys_t *p_sys = p_demux->p_sys;
int i_field;
int i_channel;
if( p_block_in )
block_Release(p_block_in);
......@@ -1030,19 +1029,12 @@ static int DemuxRecCc( demux_t *p_demux, ty_rec_hdr_t *rec_hdr, block_t *p_block
/* XDS data (extract programs infos) transmitted on field 2 only */
if( i_field == 1 )
DemuxDecodeXds( p_demux, rec_hdr->ex1, rec_hdr->ex2 );
DemuxDecodeXds( p_demux, rec_hdr->ex[0], rec_hdr->ex[1] );
if( p_sys->cc.i_data + 3 > CC_MAX_DATA_SIZE )
return 0;
p_sys->cc.p_data[p_sys->cc.i_data+0] = i_field;
p_sys->cc.p_data[p_sys->cc.i_data+1] = rec_hdr->ex1;
p_sys->cc.p_data[p_sys->cc.i_data+2] = rec_hdr->ex2;
p_sys->cc.i_data += 3;
i_channel = cc_Channel( i_field, &p_sys->cc.p_data[p_sys->cc.i_data-3 + 1] );
if( i_channel >= 0 && i_channel < 4 )
p_sys->cc.pb_present[i_channel] = true;
cc_AppendData( &p_sys->cc, i_field, rec_hdr->ex );
return 0;
}
......@@ -1942,13 +1934,11 @@ static ty_rec_hdr_t *parse_chunk_headers( const uint8_t *p_buf,
/* marker bit 2 set, so read extended data */
b1 = ( ( ( record_header[ 0 ] & 0x0f ) << 4 ) |
( ( record_header[ 1 ] & 0xf0 ) >> 4 ) );
b1 &= 0x7f;
b2 = ( ( ( record_header[ 1 ] & 0x0f ) << 4 ) |
( ( record_header[ 2 ] & 0xf0 ) >> 4 ) );
b2 &= 0x7f;
p_rec_hdr->ex1 = b1;
p_rec_hdr->ex2 = b2;
p_rec_hdr->ex[0] = b1;
p_rec_hdr->ex[1] = b2;
p_rec_hdr->l_rec_size = 0;
p_rec_hdr->l_ty_pts = 0;
p_rec_hdr->b_ext = true;
......
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