input.h

vlc stand 0.1.99 ist sehr einfach

    char*                   psz_srv_name;
#endif

    /* XXX?? target background grid descriptor ? */
    /* XXX?? video window descriptor ? */
    /* XXX?? ISO 639 language descriptor ? */

#ifdef STATS
    /* Stats */
    /* XXX?? ...stats */
#endif
} pgrm_descriptor_t;

/*****************************************************************************
 * pcr_descriptor_t
 *****************************************************************************
 * Contains informations used to synchronise the decoder with the server
 *****************************************************************************/

typedef struct pcr_descriptor_struct
{
    /* system_date = PTS_date + delta_pcr + delta_absolute */
    mtime_t                 delta_pcr;
    mtime_t                 delta_absolute;

    mtime_t                 last_pcr;

    u32                     i_synchro_state;
    count_t                 c_average_count;
                           /* counter used to compute dynamic average values */
} pcr_descriptor_t;

/*****************************************************************************
 * stream_descriptor_t
 *****************************************************************************
 * Describes a transport stream and list its associated programs. Build upon
 * the informations carried in program association sections
 *****************************************************************************/
typedef struct
{
    u16                     i_stream_id;                        /* stream id */

    /* Program Association Table status */
    u8                      i_PAT_version;                 /* version number */
    boolean_t               b_is_PAT_complete;       /* Is the PAT complete ?*/
    u8                      i_known_PAT_sections;
                                     /* Number of section we received so far */
    byte_t                  a_known_PAT_sections[32];
                                                /* Already received sections */

    /* Program Map Table status */
    boolean_t               b_is_PMT_complete;       /* Is the PMT complete ?*/
    u8                      i_known_PMT_sections;
                                     /* Number of section we received so far */
    byte_t                  a_known_PMT_sections[32];
                                                /* Already received sections */

    /* Service Description Table status */
    u8                      i_SDT_version;                 /* version number */
    boolean_t               b_is_SDT_complete;       /* Is the SDT complete ?*/
    u8                      i_known_SDT_sections;
                                     /* Number of section we received so far */
    byte_t                  a_known_SDT_sections[32];
                                                /* Already received sections */

    /* Programs description */
    int i_pgrm_number;                   /* Number of program number we have */
    pgrm_descriptor_t **    ap_programs;        /* Array of pointers to pgrm */

#ifdef STATS
    /* Stats */
    /* XXX?? ...stats */
#endif
} stream_descriptor_t;

/*****************************************************************************
 * input_netlist_t
 *****************************************************************************/
typedef struct
{
    vlc_mutex_t             lock;               /* netlist modification lock */
    struct iovec            p_ts_free[INPUT_MAX_TS + INPUT_TS_READ_ONCE];
                                          /* FIFO or LIFO of free TS packets */
    ts_packet_t *           p_ts_packets;
                              /* pointer to the first TS packet we allocated */

    pes_packet_t *          p_pes_free[INPUT_MAX_PES + 1];
                                         /* FIFO or LIFO of free PES packets */
    pes_packet_t *          p_pes_packets;
                             /* pointer to the first PES packet we allocated */

    /* To use the efficiency of the scatter/gather IO operations. We implemented
     * it in 2 ways, as we don't know yet which one is better : as a FIFO (code
     * simplier) or as a LIFO stack (when we doesn't care of the ordering, this
     * allow to drastically improve the cache performance) */
#ifdef INPUT_LIFO_TS_NETLIST
    int                     i_ts_index;
#else
    int                     i_ts_start, i_ts_end;
#endif
#ifdef INPUT_LIFO_PES_NETLIST
    int                     i_pes_index;
#else
    int                     i_pes_start, i_pes_end;
#endif
} input_netlist_t;



/*****************************************************************************
 * input_thread_t
 *****************************************************************************
 * This structure includes all the local static variables of an input thread,
 * including the netlist and the ES descriptors
 * Note that p_es must be defined as a static table, otherwise we would have to
 * update all reference to it each time the table would be reallocated
 *****************************************************************************/

/* Function pointers used in structure */
typedef int  (input_open_t)     ( p_input_thread_t p_input );
typedef int  (input_read_t)     ( p_input_thread_t p_input, const struct iovec *p_vector,
                                   size_t i_count );
typedef void (input_close_t)    ( p_input_thread_t p_input );

/* Structure */
typedef struct input_thread_s
{
    /* Thread properties and locks */
    boolean_t                   b_die;                         /* 'die' flag */
    boolean_t                   b_error;                         /* deadlock */
    vlc_thread_t                thread_id;        /* id for thread functions */
    vlc_mutex_t                 programs_lock; /* programs modification lock */
    vlc_mutex_t                 es_lock;             /* es modification lock */
    int *                       pi_status;          /* temporary status flag */

    /* Input method description */
    int                         i_method;                    /* input method */
    int                         i_handle;          /* file/socket descriptor */
    char *                      p_source;                          /* source */
    int                         i_port;                       /* port number */
    int                         i_vlan;                /* id for vlan method */
    input_open_t *              p_Open;              /* opener of the method */
    input_read_t *              p_Read;                  /* reading function */
    input_close_t *             p_Close;              /* destroying function */

    /* General stream description */
    stream_descriptor_t *   p_stream;                          /* PAT tables */
    es_descriptor_t         p_es[INPUT_MAX_ES];/* carried elementary streams */
    pcr_descriptor_t *      p_pcr;    /* PCR struct used for synchronisation */

    /* List of streams to demux */
    es_descriptor_t *       pp_selected_es[INPUT_MAX_SELECTED_ES];

    /* Netlists */
    input_netlist_t         netlist;                            /* see above */

    /* Default settings for spawned decoders */
    p_aout_thread_t             p_aout;     /* audio output thread structure */
    p_vout_thread_t             p_vout;               /* video output thread */

#ifdef STATS
    /* Statistics */
    count_t                     c_loops;                  /* number of 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;

/* Input methods */
#define INPUT_METHOD_NONE           0            /* input thread is inactive */
#define INPUT_METHOD_TS_FILE       10       /* TS stream is read from a file */
#define INPUT_METHOD_TS_UCAST      20                      /* TS UDP unicast */
#define INPUT_METHOD_TS_MCAST      21                    /* TS UDP multicast */
#define INPUT_METHOD_TS_BCAST      22                    /* TS UDP broadcast */
#define INPUT_METHOD_TS_VLAN_BCAST 32         /* TS UDP broadcast with VLANs */

/*****************************************************************************
 * Prototypes
 *****************************************************************************/
input_thread_t *input_CreateThread      ( int i_method, void *p_source, int i_port,
                                          int i_vlan, p_vout_thread_t p_vout,
                                          p_aout_thread_t p_aout, int *pi_status );
void            input_DestroyThread     ( input_thread_t *p_input, int *pi_status );


int             input_OpenAudioStream   ( input_thread_t *p_input, int i_pid );
void            input_CloseAudioStream  ( input_thread_t *p_input, int i_pid );
int             input_OpenVideoStream   ( input_thread_t *p_input, int i_pid );
void            input_CloseVideoStream  ( input_thread_t *p_input, int i_pid );