STRUCT VIDTV_MUX(9)

✨ STRUCT VIDTV_MUX(9) ✨

okay so bestie, welcome to the Kernel API Manual — we're doing a deep dive on struct vidtv_mux, which is described as a muxer abstraction that's loosely based in libavcodec/mpegtsenc.c. Loosely! Like, spiritually. vibe-wise. 💅

🎀 NAME 🎀

struct vidtv_mux — a muxer abstraction loosely based in libavcodec/mpegtsenc.c

✨ SYNOPSIS ✨

struct vidtv_mux {
    struct dvb_frontend *fe;
    struct device *dev;
    struct vidtv_mux_timing timing;
    u32 mux_rate_kbytes_sec;
    unsigned long pid_ctx[1 << (( 3) - 1)];
    void (*on_new_packets_available_cb)(void *priv, u8 *buf, u32 npackets);
    u8 *mux_buf;
    u32 mux_buf_sz;
    u32 mux_buf_offset;
    struct vidtv_channel  *channels;
    struct vidtv_mux_si si;
    u64 num_streamed_pcr;
    u64 num_streamed_si;
    struct work_struct mpeg_thread;
    bool streaming;
    u16 pcr_pid;
    u16 transport_stream_id;
    u16 network_id;
    char *network_name;
    void *priv;
 };

🌸 MEMBERS 🌸

• fe — the frontend structure, and guess who allocated it? the muxer. her house, her rules 🫶
• dev — a pointer to struct device.
• timing — keeps track of all the timing-related info. the clock girlie ⏰
• mux_rate_kbytes_sec — the bit rate for the TS, in kbytes.
• pid_ctx — a hash table that keeps track of per-PID metadata. lowkey the backbone of the whole operation.
• on_new_packets_available_cb — a callback that lets everyone know fresh TS packets are ready. it's giving "notify your besties" energy 🔔
• mux_buf — a pointer to a buffer for this muxer. TS packets get stored in there and then passed on to the bridge driver. iconic little staging area ✨
• mux_buf_sz — the size for mux_buf.
• mux_buf_offset — the current offset into mux_buf. she knows exactly where she's at, always 💅
• channels — the channels associated with this muxer.
• si — keeps track of the PSI context.
• num_streamed_pcr — number of PCR packets streamed. count 'em 🔥
• num_streamed_si — the number of PSI packets streamed. also counted, also slaying.
• mpeg_thread — the thread responsible for the muxer loop. main character energy fr fr 👑
• streaming — whether mpeg_thread is running or not. the vibe check flag.
• pcr_pid — the TS PID used for the PSI packets. and listen: all channels will share the same PCR. no cap, everybody shares. 🤝
• transport_stream_id — the transport stream ID.
• network_id — the network ID.
• network_name — the network name.
• priv — private data. mind your business 🙈

🦋 SEE ALSO 🦋

• Kernel file ./drivers/media/test-drivers/vidtv/vidtv_mux.h
• struct vidtv_mux_timing(9)
• struct vidtv_mux_si(9)
• struct vidtv_mux_pid_ctx(9)
• struct vidtv_mux_init_args(9)

and that's the whole page, bestie!! go read ./drivers/media/test-drivers/vidtv/vidtv_mux.h and live your truth 🌈

mwah 💖 — this little love letter came from ./drivers/media/test-drivers/v..., dropped in October 2026, and it's part of the Kernel API Manual. periodt. 🎀