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403 results
Show changes
Commits on Source (2)
......@@ -37,6 +37,7 @@ enum cc_payload_type_e
CC_PAYLOAD_DVD,
CC_PAYLOAD_REPLAYTV,
CC_PAYLOAD_SCTE20,
CC_PAYLOAD_CDP,
};
typedef struct
{
......@@ -336,7 +337,7 @@ static inline void cc_Extract( cc_data_t *c, enum cc_payload_type_e i_payload_ty
}
c->b_reorder = false;
}
else /* CC_PAYLOAD_SCTE20 */
else if( i_payload_type == CC_PAYLOAD_SCTE20 )
{
/* user_data(2)
* (u32 stripped earlier)
......@@ -383,6 +384,68 @@ static inline void cc_Extract( cc_data_t *c, enum cc_payload_type_e i_payload_ty
}
c->b_reorder = true;
}
else // CC_PAYLOAD_CDP
{
# define CDP_FLAG_TIME_CODE_PRESENT (1<<7)
# define CDP_FLAG_CC_DATA_PRESENT (1<<6)
# define CDP_FLAG_SVC_INFO_PRESENT (1<<5)
# define CDP_FLAG_SVC_INFO_START (1<<4)
# define CDP_FLAG_SVC_INFO_CHANGE (1<<3)
# define CDP_FLAG_SVC_INFO_COMPLETE (1<<2)
# define CDP_FLAG_CAPTION_SVC_ACTIVE (1<<1)
if(i_src < 7)
return;
/* ST334-2 5.2 cdp_header() */
uint8_t cdp_length = p_src[2];
if(cdp_length < 8 || cdp_length > i_src)
return;
uint8_t cdp_flags = p_src[4];
/* skip header */
p_src += 7; i_src -= 7;
/* 5.3 time_code_section() */
if( cdp_flags & CDP_FLAG_TIME_CODE_PRESENT )
{
if( i_src < 5 ) // Shall be 5 bytes
return;
p_src += 5; i_src += 5;
}
/* 5.4 ccdata_section */
if( cdp_flags & CDP_FLAG_CC_DATA_PRESENT )
{
/* ccdata_section()
* u8 0x72
* u3 marker bits(111)
* u5 cc_count
* for cc_count
* u5 marker bits(1111 1)
* u1 cc_valid
* u2 cc_type
* u8 cc_data_1
* u8 cc_data_2
*/
if( i_src < 2 || p_src[0] != 0x72 ) // marker
return;
const uint8_t *cc = &p_src[1];
const int i_count_cc = cc[0]&0x1f;
if( i_src - 2 < i_count_cc*3 ) // broken packet
return;
cc += 1;
for( int i = 0; i < i_count_cc; i++, cc += 3 )
{
if( c->i_data + 3 > CC_MAX_DATA_SIZE )
break;
cc_AppendData( c, cc[0], &cc[1] );
}
}
/* remaining data */
c->b_reorder = false;
}
}
......@@ -429,6 +492,10 @@ static inline void cc_ProbeAndExtract( cc_data_t *c, bool b_top_field_first, con
i_src -= 2;
p_src += 2;
}
else if (p_src[0] == 0x96 && p_src[1] == 0x69) /* CDP */
{
i_payload_type = CC_PAYLOAD_CDP;
}
else
{
#if 0
......
......@@ -721,6 +721,32 @@ static int CreateTracks( demux_t *p_demux, unsigned i_tracks )
return VLC_SUCCESS;
}
static block_t * MP4_CDP_Convert( block_t *p_block )
{
/* FinalCut ST334-2 CDP put inside CC violation */
if (p_block->i_buffer < 8 + 7)
goto out;
if(memcmp(&p_block->p_buffer[4], "ccdp", 4))
goto out;
uint_fast32_t ccdp_size = GetDWBE(p_block->p_buffer);
if (ccdp_size > p_block->i_buffer || ccdp_size < 8)
goto out;
p_block->p_buffer += 8;
p_block->i_buffer = ccdp_size - 8;
/* Let cc.h handle extraction */
cc_data_t cc;
cc_Init(&cc);
cc_Extract(&cc, CC_PAYLOAD_CDP, true, p_block->p_buffer, p_block->i_buffer);
memcpy(p_block->p_buffer, cc.p_data, cc.i_data);
p_block->i_buffer = cc.i_data;
out:
return p_block;
}
static block_t * MP4_EIA608_Convert( block_t * p_block )
{
/* Rebuild codec data from encap */
......@@ -731,6 +757,9 @@ static block_t * MP4_EIA608_Convert( block_t * p_block )
if (p_block->i_buffer < 8)
goto out;
if(!memcmp(&p_block->p_buffer[4], "ccdp", 4))
return MP4_CDP_Convert(p_block);
uint_fast32_t cdat_size = GetDWBE(p_block->p_buffer) - 8;
if (cdat_size > p_block->i_buffer)
goto out;
......