X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=modules%2Fdemux%2Fps.h;h=191cce3fa242b24907095bc47f22c54fb7bd4471;hb=23fe953dbb391d1a20a6b75a79d41ff8a2d77f82;hp=0cc3ac1b5727f985d9bd1e7d68decb73e00000fc;hpb=083295e71d8d52ade0389917b0a1e43adf50b454;p=vlc diff --git a/modules/demux/ps.h b/modules/demux/ps.h index 0cc3ac1b57..191cce3fa2 100644 --- a/modules/demux/ps.h +++ b/modules/demux/ps.h @@ -1,7 +1,7 @@ /***************************************************************************** * ps.h: Program Stream demuxer helper ***************************************************************************** - * Copyright (C) 2004 VideoLAN + * Copyright (C) 2004 the VideoLAN team * $Id$ * * Authors: Laurent Aimar @@ -18,18 +18,30 @@ * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ -#define PS_TK_COUNT (512 - 0xc0) -#define PS_ID_TO_TK( id ) ((id) <= 0xff ? (id) - 0xc0 : ((id)&0xff) + (256 - 0xc0)) +#include + +/* 256-0xC0 for normal stream, 256 for 0xbd stream, 256 for 0xfd stream */ +#define PS_TK_COUNT (768 - 0xc0) +#define PS_ID_TO_TK( id ) ((id) <= 0xff ? (id) - 0xc0 : \ + ((id)&0xff) + (((id)&0xff00) == 0xbd00 ? 256-0xC0 : 512-0xc0) ) + +typedef struct ps_psm_t ps_psm_t; +static inline int ps_id_to_type( const ps_psm_t *, int ); +static inline const uint8_t *ps_id_to_lang( const ps_psm_t *, int ); typedef struct { - vlc_bool_t b_seen; + bool b_seen; int i_skip; + int i_id; es_out_id_t *es; es_format_t fmt; + mtime_t i_first_pts; + mtime_t i_last_pts; + } ps_track_t; /* Init a set of track */ @@ -38,29 +50,39 @@ static inline void ps_track_init( ps_track_t tk[PS_TK_COUNT] ) int i; for( i = 0; i < PS_TK_COUNT; i++ ) { - tk[i].b_seen = VLC_FALSE; + tk[i].b_seen = false; tk[i].i_skip = 0; + tk[i].i_id = 0; tk[i].es = NULL; + tk[i].i_first_pts = -1; + tk[i].i_last_pts = -1; es_format_Init( &tk[i].fmt, UNKNOWN_ES, 0 ); } } /* From id fill i_skip and es_format_t */ -static inline int ps_track_fill( ps_track_t *tk, int i_id ) +static inline int ps_track_fill( ps_track_t *tk, ps_psm_t *p_psm, int i_id ) { tk->i_skip = 0; + tk->i_id = i_id; if( ( i_id&0xff00 ) == 0xbd00 ) { - if( ( i_id&0xf8 ) == 0x88 ) + if( ( i_id&0xf8 ) == 0x88 || (i_id&0xf8) == 0x98 ) { es_format_Init( &tk->fmt, AUDIO_ES, VLC_FOURCC('d','t','s',' ') ); tk->i_skip = 4; } - else if( ( i_id&0xf0 ) == 0x80 ) + else if( ( i_id&0xf0 ) == 0x80 + || (i_id&0xf0) == 0xc0 ) /* AC-3, Can also be used for DD+/E-AC-3 */ { es_format_Init( &tk->fmt, AUDIO_ES, VLC_FOURCC('a','5','2',' ') ); tk->i_skip = 4; } + else if( (i_id&0xf0) == 0xb0 ) + { + es_format_Init( &tk->fmt, AUDIO_ES, VLC_FOURCC('m','l','p',' ') ); + /* FIXME / untested ... no known decoder (at least not in VLC/ffmpeg) */ + } else if( ( i_id&0xe0 ) == 0x20 ) { es_format_Init( &tk->fmt, SPU_ES, VLC_FOURCC('s','p','u',' ') ); @@ -79,6 +101,23 @@ static inline int ps_track_fill( ps_track_t *tk, int i_id ) { es_format_Init( &tk->fmt, SPU_ES, VLC_FOURCC('c','v','d',' ') ); } + else if( ( i_id&0xff ) == 0x10 ) + { + es_format_Init( &tk->fmt, SPU_ES, VLC_FOURCC('t','e','l','x') ); + } + else + { + es_format_Init( &tk->fmt, UNKNOWN_ES, 0 ); + return VLC_EGENERIC; + } + } + else if( (i_id&0xff00) == 0xfd00 ) + { + uint8_t i_sub_id = i_id & 0xff; + if( i_sub_id >= 0x55 && i_sub_id <= 0x5f ) + { + es_format_Init( &tk->fmt, VIDEO_ES, VLC_FOURCC('W','V','C','1') ); + } else { es_format_Init( &tk->fmt, UNKNOWN_ES, 0 ); @@ -87,23 +126,54 @@ static inline int ps_track_fill( ps_track_t *tk, int i_id ) } else { - if( ( i_id&0xf0 ) == 0xe0 ) + int i_type = ps_id_to_type( p_psm , i_id ); + + es_format_Init( &tk->fmt, UNKNOWN_ES, 0 ); + + if( (i_id&0xf0) == 0xe0 && i_type == 0x1b ) + { + es_format_Init( &tk->fmt, VIDEO_ES, VLC_FOURCC('h','2','6','4') ); + } + else if( (i_id&0xf0) == 0xe0 && i_type == 0x10 ) + { + es_format_Init( &tk->fmt, VIDEO_ES, VLC_FOURCC('m','p','4','v') ); + } + else if( (i_id&0xf0) == 0xe0 && i_type == 0x02 ) { es_format_Init( &tk->fmt, VIDEO_ES, VLC_FOURCC('m','p','g','v') ); } - else if( ( i_id&0xe0 ) == 0xc0 ) + else if( ( i_id&0xe0 ) == 0xc0 && i_type == 0x0f ) + { + es_format_Init( &tk->fmt, AUDIO_ES, VLC_FOURCC('m','p','4','a') ); + } + else if( ( i_id&0xe0 ) == 0xc0 && i_type == 0x03 ) { es_format_Init( &tk->fmt, AUDIO_ES, VLC_FOURCC('m','p','g','a') ); } - else + + if( tk->fmt.i_cat == UNKNOWN_ES && ( i_id&0xf0 ) == 0xe0 ) { - es_format_Init( &tk->fmt, UNKNOWN_ES, 0 ); - return VLC_EGENERIC; + es_format_Init( &tk->fmt, VIDEO_ES, VLC_FOURCC('m','p','g','v') ); + } + else if( tk->fmt.i_cat == UNKNOWN_ES && ( i_id&0xe0 ) == 0xc0 ) + { + es_format_Init( &tk->fmt, AUDIO_ES, VLC_FOURCC('m','p','g','a') ); } + else if( tk->fmt.i_cat == UNKNOWN_ES ) return VLC_EGENERIC; } /* PES packets usually contain truncated frames */ - tk->fmt.b_packetized = VLC_FALSE; + tk->fmt.b_packetized = false; + + if( ps_id_to_lang( p_psm, i_id ) ) + { + tk->fmt.psz_language = malloc( 4 ); + if( tk->fmt.psz_language ) + { + memcpy( tk->fmt.psz_language, ps_id_to_lang( p_psm , i_id ), 3 ); + tk->fmt.psz_language[3] = 0; + } + } return VLC_SUCCESS; } @@ -115,15 +185,70 @@ static inline int ps_pkt_id( block_t *p_pkt ) p_pkt->i_buffer >= 9 && p_pkt->i_buffer >= 9 + p_pkt->p_buffer[8] ) { + /* VOB extension */ return 0xbd00 | p_pkt->p_buffer[9+p_pkt->p_buffer[8]]; } + else if( p_pkt->p_buffer[3] == 0xfd && + p_pkt->i_buffer >= 9 && + (p_pkt->p_buffer[6]&0xC0) == 0x80 && /* mpeg2 */ + (p_pkt->p_buffer[7]&0x01) == 0x01 ) /* extension_flag */ + { + /* ISO 13818 amendment 2 and SMPTE RP 227 */ + const uint8_t i_flags = p_pkt->p_buffer[7]; + unsigned int i_skip = 9; + + /* Find PES extension */ + if( (i_flags & 0x80 ) ) + { + i_skip += 5; /* pts */ + if( (i_flags & 0x40) ) + i_skip += 5; /* dts */ + } + if( (i_flags & 0x20 ) ) + i_skip += 6; + if( (i_flags & 0x10 ) ) + i_skip += 3; + if( (i_flags & 0x08 ) ) + i_skip += 1; + if( (i_flags & 0x04 ) ) + i_skip += 1; + if( (i_flags & 0x02 ) ) + i_skip += 2; + + if( i_skip < p_pkt->i_buffer && (p_pkt->p_buffer[i_skip]&0x01) ) + { + const uint8_t i_flags2 = p_pkt->p_buffer[i_skip]; + + /* Find PES extension 2 */ + i_skip += 1; + if( i_flags2 & 0x80 ) + i_skip += 16; + if( (i_flags2 & 0x40) && i_skip < p_pkt->i_buffer ) + i_skip += 1 + p_pkt->p_buffer[i_skip]; + if( i_flags2 & 0x20 ) + i_skip += 2; + if( i_flags2 & 0x10 ) + i_skip += 2; + + if( i_skip + 1 < p_pkt->i_buffer ) + { + const int i_extension_field_length = p_pkt->p_buffer[i_skip]&0x7f; + if( i_extension_field_length >=1 ) + { + int i_stream_id_extension_flag = (p_pkt->p_buffer[i_skip+1] >> 7)&0x1; + if( i_stream_id_extension_flag == 0 ) + return 0xfd00 | (p_pkt->p_buffer[i_skip+1]&0x7f); + } + } + } + } return p_pkt->p_buffer[3]; } /* return the size of the next packet * XXX you need to give him at least 14 bytes (and it need to start as a * valid packet) */ -static inline int ps_pkt_size( uint8_t *p, int i_peek ) +static inline int ps_pkt_size( const uint8_t *p, int i_peek ) { if( p[3] == 0xb9 && i_peek >= 4 ) { @@ -183,7 +308,7 @@ static inline int ps_pkt_parse_pack( block_t *p_pkt, int64_t *pi_scr, } /* Parse a SYSTEM PES */ -static inline int ps_pkt_parse_system( block_t *p_pkt, +static inline int ps_pkt_parse_system( block_t *p_pkt, ps_psm_t *p_psm, ps_track_t tk[PS_TK_COUNT] ) { uint8_t *p = &p_pkt->p_buffer[6 + 3 + 1 + 1 + 1]; @@ -198,15 +323,15 @@ static inline int ps_pkt_parse_system( block_t *p_pkt, if( p[0] >= 0xBC || p[0] == 0xB8 || p[0] == 0xB9 ) p += 2; p++; - if( p[0] >= 0xc0 ) + if( i_id >= 0xc0 ) { int i_tk = PS_ID_TO_TK( i_id ); if( !tk[i_tk].b_seen ) { - if( !ps_track_fill( &tk[i_tk], i_id ) ) + if( !ps_track_fill( &tk[i_tk], p_psm, i_id ) ) { - tk[i_tk].b_seen = VLC_TRUE; + tk[i_tk].b_seen = true; } } } @@ -218,7 +343,7 @@ static inline int ps_pkt_parse_system( block_t *p_pkt, static inline int ps_pkt_parse_pes( block_t *p_pes, int i_skip_extra ) { uint8_t header[30]; - int i_skip = 0; + unsigned int i_skip = 0; memcpy( header, p_pes->p_buffer, __MIN( p_pes->i_buffer, 30 ) ); @@ -320,3 +445,179 @@ static inline int ps_pkt_parse_pes( block_t *p_pes, int i_skip_extra ) return VLC_SUCCESS; } + +/* Program stream map handling */ +typedef struct ps_es_t +{ + int i_type; + int i_id; + + int i_descriptor; + uint8_t *p_descriptor; + + /* Language is iso639-2T */ + uint8_t lang[3]; + +} ps_es_t; + +struct ps_psm_t +{ + int i_version; + + int i_es; + ps_es_t **es; +}; + +static inline int ps_id_to_type( const ps_psm_t *p_psm, int i_id ) +{ + int i; + for( i = 0; p_psm && i < p_psm->i_es; i++ ) + { + if( p_psm->es[i]->i_id == i_id ) return p_psm->es[i]->i_type; + } + return 0; +} + +static inline const uint8_t *ps_id_to_lang( const ps_psm_t *p_psm, int i_id ) +{ + int i; + for( i = 0; p_psm && i < p_psm->i_es; i++ ) + { + if( p_psm->es[i]->i_id == i_id ) return p_psm->es[i]->lang; + } + return 0; +} + +static inline void ps_psm_init( ps_psm_t *p_psm ) +{ + p_psm->i_version = 0xFFFF; + p_psm->i_es = 0; + p_psm->es = 0; +} + +static inline void ps_psm_destroy( ps_psm_t *p_psm ) +{ + while( p_psm->i_es-- ) + { + free( p_psm->es[p_psm->i_es]->p_descriptor ); + free( p_psm->es[p_psm->i_es] ); + } + free( p_psm->es ); + + p_psm->es = 0; + p_psm->i_es = 0; +} + +static inline int ps_psm_fill( ps_psm_t *p_psm, block_t *p_pkt, + ps_track_t tk[PS_TK_COUNT], es_out_t *out ) +{ + int i_buffer = p_pkt->i_buffer; + uint8_t *p_buffer = p_pkt->p_buffer; + int i_length, i_version, i_info_length, i_esm_length, i_es_base, i; + + if( !p_psm || p_buffer[3] != 0xbc ) return VLC_EGENERIC; + + i_length = (uint16_t)(p_buffer[4] << 8) + p_buffer[5] + 6; + if( i_length > i_buffer ) return VLC_EGENERIC; + + //i_current_next_indicator = (p_buffer[6] && 0x01); + i_version = (p_buffer[6] && 0xf8); + + if( p_psm->i_version == i_version ) return VLC_EGENERIC; + + ps_psm_destroy( p_psm ); + + i_info_length = (uint16_t)(p_buffer[8] << 8) + p_buffer[9]; + if( i_info_length + 10 > i_length ) return VLC_EGENERIC; + + /* Elementary stream map */ + i_esm_length = (uint16_t)(p_buffer[ 10 + i_info_length ] << 8) + + p_buffer[ 11 + i_info_length]; + i_es_base = 12 + i_info_length; + + while( i_es_base + 4 < i_length ) + { + ps_es_t **tmp_es; + ps_es_t es; + es.lang[0] = es.lang[1] = es.lang[2] = 0; + + es.i_type = p_buffer[ i_es_base ]; + es.i_id = p_buffer[ i_es_base + 1 ]; + i_info_length = (uint16_t)(p_buffer[ i_es_base + 2 ] << 8) + + p_buffer[ i_es_base + 3 ]; + + if( i_es_base + 4 + i_info_length > i_length ) break; + + /* TODO Add support for VC-1 stream: + * stream_type=0xea, stream_id=0xfd AND registration + * descriptor 0x5 with format_identifier == 0x56432D31 (VC-1) + * (I need a sample that use PSM with VC-1) */ + + es.p_descriptor = 0; + es.i_descriptor = i_info_length; + if( i_info_length > 0 ) + { + int i = 0; + + es.p_descriptor = malloc( i_info_length ); + if( es.p_descriptor ) + { + memcpy( es.p_descriptor, p_buffer + i_es_base + 4, i_info_length); + + while( i <= es.i_descriptor - 2 ) + { + /* Look for the ISO639 language descriptor */ + if( es.p_descriptor[i] != 0x0a ) + { + i += es.p_descriptor[i+1] + 2; + continue; + } + + if( i <= es.i_descriptor - 6 ) + { + es.lang[0] = es.p_descriptor[i+2]; + es.lang[1] = es.p_descriptor[i+3]; + es.lang[2] = es.p_descriptor[i+4]; + } + break; + } + } + } + + tmp_es = realloc( p_psm->es, sizeof(ps_es_t *) * (p_psm->i_es+1) ); + if( tmp_es ) + { + p_psm->es = tmp_es; + p_psm->es[p_psm->i_es] = malloc( sizeof(ps_es_t) ); + if( p_psm->es[p_psm->i_es] ) + { + *p_psm->es[p_psm->i_es++] = es; + i_es_base += 4 + i_info_length; + } + } + } + + /* TODO: CRC */ + + p_psm->i_version = i_version; + + /* Check/Modify our existing tracks */ + for( i = 0; i < PS_TK_COUNT; i++ ) + { + ps_track_t tk_tmp; + + if( !tk[i].b_seen || !tk[i].es ) continue; + + if( ps_track_fill( &tk_tmp, p_psm, tk[i].i_id ) != VLC_SUCCESS ) + continue; + + if( tk_tmp.fmt.i_codec == tk[i].fmt.i_codec ) continue; + + es_out_Del( out, tk[i].es ); + tk[i] = tk_tmp; + tk[i].b_seen = true; + tk[i].es = es_out_Add( out, &tk[i].fmt ); + } + + return VLC_SUCCESS; +}