3.1. Demux Data Types

3.1.1. Output for the demux

dmx_output

enum dmx_output

ID	Description
DMX_OUT_DECODER	Streaming directly to decoder.
DMX_OUT_TAP	Output going to a memory buffer (to be retrieved via the read command). Delivers the stream output to the demux device on which the ioctl is called.
DMX_OUT_TS_TAP	Output multiplexed into a new TS (to be retrieved by reading from the logical DVR device). Routes output to the logical DVR device /dev/dvb/adapter?/dvr?, which delivers a TS multiplexed from all filters for which DMX_OUT_TS_TAP was specified.
DMX_OUT_TSDEMUX_TAP	Like DMX_OUT_TS_TAP but retrieved from the DMX device.

3.1.2. dmx_input_t

dmx_input

typedef enum
{
    DMX_IN_FRONTEND, /* Input from a front-end device.  */
    DMX_IN_DVR       /* Input from the logical DVR device.  */
} dmx_input_t;

3.1.3. dmx_pes_type_t

dmx_pes_type

typedef enum
{
    DMX_PES_AUDIO0,
    DMX_PES_VIDEO0,
    DMX_PES_TELETEXT0,
    DMX_PES_SUBTITLE0,
    DMX_PES_PCR0,

    DMX_PES_AUDIO1,
    DMX_PES_VIDEO1,
    DMX_PES_TELETEXT1,
    DMX_PES_SUBTITLE1,
    DMX_PES_PCR1,

    DMX_PES_AUDIO2,
    DMX_PES_VIDEO2,
    DMX_PES_TELETEXT2,
    DMX_PES_SUBTITLE2,
    DMX_PES_PCR2,

    DMX_PES_AUDIO3,
    DMX_PES_VIDEO3,
    DMX_PES_TELETEXT3,
    DMX_PES_SUBTITLE3,
    DMX_PES_PCR3,

    DMX_PES_OTHER
} dmx_pes_type_t;

3.1.4. struct dmx_filter

dmx_filter

 typedef struct dmx_filter
{
    __u8  filter[DMX_FILTER_SIZE];
    __u8  mask[DMX_FILTER_SIZE];
    __u8  mode[DMX_FILTER_SIZE];
} dmx_filter_t;

dmx_sct_filter_params

3.1.5. struct dmx_sct_filter_params

struct dmx_sct_filter_params
{
    __u16          pid;
    dmx_filter_t   filter;
    __u32          timeout;
    __u32          flags;
#define DMX_CHECK_CRC       1
#define DMX_ONESHOT         2
#define DMX_IMMEDIATE_START 4
#define DMX_KERNEL_CLIENT   0x8000
};

3.1.6. struct dmx_pes_filter_params

dmx_pes_filter_params

struct dmx_pes_filter_params
{
    __u16          pid;
    dmx_input_t    input;
    dmx_output_t   output;
    dmx_pes_type_t pes_type;
    __u32          flags;
};

3.1.7. struct dmx_event

dmx_event

struct dmx_event
{
    dmx_event_t          event;
    time_t               timeStamp;
    union
    {
        dmx_scrambling_status_t scrambling;
    } u;
};

3.1.8. struct dmx_stc

dmx_stc

struct dmx_stc {
    unsigned int num;   /* input : which STC? 0..N */
    unsigned int base;  /* output: divisor for stc to get 90 kHz clock */
    __u64 stc;      /* output: stc in 'base'*90 kHz units */
};

3.1.9. struct dmx_caps

dmx_caps

 typedef struct dmx_caps {
    __u32 caps;
    int num_decoders;
} dmx_caps_t;

3.1.10. enum dmx_source

dmx_source

typedef enum dmx_source {
    DMX_SOURCE_FRONT0 = 0,
    DMX_SOURCE_FRONT1,
    DMX_SOURCE_FRONT2,
    DMX_SOURCE_FRONT3,
    DMX_SOURCE_DVR0   = 16,
    DMX_SOURCE_DVR1,
    DMX_SOURCE_DVR2,
    DMX_SOURCE_DVR3
} dmx_source_t;