/* Structures exported to the interface */ /* * Communication input -> interface */ #define INPUT_MAX_PLUGINS 1 /***************************************************************************** * es_descriptor_t: elementary stream descriptor ***************************************************************************** * Describes an elementary stream, and includes fields required to handle and * demultiplex this elementary stream. *****************************************************************************/ struct decoder_fifo_s; /* defined in input_ext-dec.h */ struct pgrm_descriptor_s; typedef struct es_descriptor_s { u16 i_id; /* stream ID for PS, PID for TS */ u8 i_stream_id; /* stream ID defined in the PES */ u8 i_type; /* stream type */ /* Demultiplexer information */ void * p_demux_data; struct pgrm_descriptor_s * p_pgrm; /* very convenient in the demultiplexer */ /* PES parser information */ struct pes_packet_s * p_pes; /* Current PES */ struct data_packet_s * p_last; /* The last packet gathered at present */ int i_pes_real_size; /* as indicated by the header */ boolean_t b_discontinuity; /* Stream changed */ /* Decoder information */ struct decoder_fifo_s * p_decoder_fifo; vlc_thread_t thread_id; /* ID of the decoder */ #ifdef STATS count_t c_payload_bytes;/* total of payload useful bytes */ count_t c_packets; /* total packets read */ count_t c_invalid_packets; /* invalid packets read */ #endif } es_descriptor_t; /* Special PID values - note that the PID is only on 13 bits, and that values * greater than 0x1fff have no meaning in a stream */ #define PROGRAM_ASSOCIATION_TABLE_PID 0x0000 #define CONDITIONNAL_ACCESS_TABLE_PID 0x0001 /* not used */ #define EMPTY_ID 0xffff /* empty record in a table */ /* ES streams types - see ISO/IEC 13818-1 table 2-29 numbers */ #define MPEG1_VIDEO_ES 0x01 #define MPEG2_VIDEO_ES 0x02 #define MPEG1_AUDIO_ES 0x03 #define MPEG2_AUDIO_ES 0x04 #define AC3_AUDIO_ES 0x81 #define DVD_SPU_ES 0x82 /* 0x82 might violate the norm */ #define LPCM_AUDIO_ES 0x83 /***************************************************************************** * pgrm_descriptor_t ***************************************************************************** * Describes a program and list associated elementary streams. It is build by * the PSI decoder upon the informations carried in program map sections *****************************************************************************/ typedef struct pgrm_descriptor_s { /* Program characteristics */ u16 i_number; /* program number */ u8 i_version; /* version number */ boolean_t b_is_ok; /* Is the description up to date ? */ /* Service Descriptor (program name) - DVB extension */ u8 i_srv_type; char * psz_srv_name; /* Synchronization information */ /* system_date = PTS_date + delta_cr + delta_absolute */ mtime_t delta_cr; mtime_t delta_absolute; mtime_t last_cr; count_t c_average_count; /* counter used to compute dynamic average values */ int i_synchro_state; boolean_t b_discontinuity; /* Demultiplexer data */ void * p_demux_data; /* Decoders control */ struct vout_thread_s * p_vout; struct aout_thread_s * p_aout; int i_es_number; /* size of the following array */ es_descriptor_t ** pp_es; /* array of pointers to ES */ } pgrm_descriptor_t; /* Synchro states */ #define SYNCHRO_OK 0 #define SYNCHRO_NOT_STARTED 1 #define SYNCHRO_START 2 #define SYNCHRO_REINIT 3 /***************************************************************************** * stream_descriptor_t ***************************************************************************** * Describes a stream and list its associated programs. Build upon * the information carried in program association sections (for instance) *****************************************************************************/ typedef struct stream_descriptor_s { u16 i_stream_id; /* stream id */ vlc_mutex_t stream_lock; /* to be taken every time you read * or modify stream, pgrm or es */ /* Input method data */ boolean_t b_pace_control; /* can we read when we want ? */ boolean_t b_seekable; /* can we do lseek() ? */ /* if (b_seekable) : */ off_t i_size; /* total size of the file (in bytes) */ off_t i_tell;/* actual location in the file (in bytes) */ /* Demultiplexer data */ void * p_demux_data; /* Programs description */ int i_pgrm_number; /* size of the following array */ pgrm_descriptor_t ** pp_programs; /* array of pointers to pgrm */ /* Stream control */ stream_ctrl_t control; } stream_descriptor_t; /***************************************************************************** * i_p_config_t ***************************************************************************** * This structure gives plugins pointers to the useful functions of input *****************************************************************************/ struct input_thread_s; struct data_packet_s; struct es_descriptor_s; typedef struct i_p_config_s { int (* pf_peek_stream)( struct input_thread_s *, byte_t * buffer, size_t ); void (* pf_demux_pes)( struct input_thread_s *, struct data_packet_s *, struct es_descriptor_s *, boolean_t b_unit_start, boolean_t b_packet_lost ); } i_p_config_t; /***************************************************************************** * input_thread_t ***************************************************************************** * This structure includes all the local static variables of an input thread *****************************************************************************/ struct aout_thread_s; struct vout_thread_s; typedef struct input_thread_s { /* Thread properties and locks */ boolean_t b_die; /* 'die' flag */ boolean_t b_error; vlc_thread_t thread_id; /* id for thread functions */ int * pi_status; /* temporary status flag */ struct input_config_s * p_config; struct input_capabilities_s * pp_plugins[INPUT_MAX_PLUGINS];/* list of plugins */ struct input_capabilities_s * p_plugin; /* selected plugin */ i_p_config_t i_p_config; /* plugin configuration */ int i_handle; /* socket or file descriptor */ void * p_method_data; /* General stream description */ stream_descriptor_t stream; /* PAT tables */ es_descriptor_t p_es[INPUT_MAX_ES]; /* carried elementary streams */ /* List of streams to demux */ es_descriptor_t * pp_selected_es[INPUT_MAX_SELECTED_ES]; /* For auto-launch of decoders */ struct aout_thread_s * p_default_aout; struct vout_thread_s * p_default_vout; #ifdef STATS count_t c_loops; count_t c_bytes; /* bytes read */ count_t c_payload_bytes; /* payload useful bytes */ count_t c_packets_read; /* packets read */ count_t c_packets_trashed; /* trashed packets */ #endif } input_thread_t; /* * Communication interface -> input */ /***************************************************************************** * input_config_t ***************************************************************************** * This structure is given by the interface to an input thread *****************************************************************************/ typedef struct input_config_s { /* Input method description */ int i_method; /* input method */ char * p_source; /* source */ /* For auto-launch of decoders */ struct aout_thread_s * p_default_aout; struct vout_thread_s * p_default_vout; } input_config_t; /* Input methods */ #define INPUT_METHOD_NONE 0 /* input thread is inactive */ #define INPUT_METHOD_FILE 10 /* stream is read from file p_source */ #define INPUT_METHOD_UCAST 20 /* UDP unicast */ #define INPUT_METHOD_MCAST 21 /* UDP multicast */ #define INPUT_METHOD_BCAST 22 /* UDP broadcast */ #define INPUT_METHOD_VLAN_BCAST 32 /* UDP broadcast with VLANs */ /***************************************************************************** * Prototypes *****************************************************************************/ struct input_thread_s * input_CreateThread( struct input_config_s *, int *pi_status ); void input_DestroyThread( struct input_thread_s *, int *pi_status ); void input_PauseProgram( struct input_thread_s *, struct pgrm_descriptor_s * ); void input_PlayProgram( struct input_thread_s *, struct pgrm_descriptor_s * ); void input_FFProgram( struct input_thread_s *, struct pgrm_descriptor_s * ); void input_SMProgram( struct input_thread_s *, struct pgrm_descriptor_s * ); void input_RewindProgram( struct input_thread_s *, struct pgrm_descriptor_s * );