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| author | Daniel W. S. Almeida <dwlsalmeida@gmail.com> | 2020-10-31 16:05:48 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-11-26 07:37:59 +0100 |
| commit | c2f78f0cb294aa6f009d3a170f4ee8ad199ba5da (patch) | |
| tree | 018f05a914d1b6dab5486b9dd6fd19b94144d4c9 /drivers/media/test-drivers/vidtv/vidtv_mux.c | |
| parent | dd6dbe8d7e312238cc0ad0b907042a96b0505d44 (diff) | |
| download | lwn-c2f78f0cb294aa6f009d3a170f4ee8ad199ba5da.tar.gz lwn-c2f78f0cb294aa6f009d3a170f4ee8ad199ba5da.zip | |
media: vidtv: psi: add a Network Information Table (NIT)
Add a Network Information Table (NIT) as specified in ETSI EN 300 468.
This table conveys information relating to the physical organization of
the multiplexes carried via a given network and the characteristics of
the network itself.
It is conveyed in the output of vidtv as packets with TS PID of 0x0010
[mchehab+huawei@kernel.org: removed an extra blank line]
Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/test-drivers/vidtv/vidtv_mux.c')
| -rw-r--r-- | drivers/media/test-drivers/vidtv/vidtv_mux.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/media/test-drivers/vidtv/vidtv_mux.c b/drivers/media/test-drivers/vidtv/vidtv_mux.c index 082740ae9d44..2a960e87c39c 100644 --- a/drivers/media/test-drivers/vidtv/vidtv_mux.c +++ b/drivers/media/test-drivers/vidtv/vidtv_mux.c @@ -74,6 +74,8 @@ static void vidtv_mux_pid_ctx_init(struct vidtv_mux *m) vidtv_mux_create_pid_ctx_once(m, VIDTV_PAT_PID); /* push the SDT pid ctx */ vidtv_mux_create_pid_ctx_once(m, VIDTV_SDT_PID); + /* push the NIT pid ctx */ + vidtv_mux_create_pid_ctx_once(m, VIDTV_NIT_PID); /* add a ctx for all PMT sections */ while (p) { @@ -117,10 +119,12 @@ static u32 vidtv_mux_push_si(struct vidtv_mux *m) struct vidtv_mux_pid_ctx *pat_ctx; struct vidtv_mux_pid_ctx *pmt_ctx; struct vidtv_mux_pid_ctx *sdt_ctx; + struct vidtv_mux_pid_ctx *nit_ctx; struct vidtv_psi_pat_write_args pat_args = {}; struct vidtv_psi_pmt_write_args pmt_args = {}; struct vidtv_psi_sdt_write_args sdt_args = {}; + struct vidtv_psi_nit_write_args nit_args = {}; u32 nbytes; /* the number of bytes written by this function */ u16 pmt_pid; @@ -128,6 +132,7 @@ static u32 vidtv_mux_push_si(struct vidtv_mux *m) pat_ctx = vidtv_mux_get_pid_ctx(m, VIDTV_PAT_PID); sdt_ctx = vidtv_mux_get_pid_ctx(m, VIDTV_SDT_PID); + nit_ctx = vidtv_mux_get_pid_ctx(m, VIDTV_NIT_PID); pat_args.buf = m->mux_buf; pat_args.offset = m->mux_buf_offset; @@ -169,6 +174,14 @@ static u32 vidtv_mux_push_si(struct vidtv_mux *m) m->mux_buf_offset += vidtv_psi_sdt_write_into(sdt_args); + nit_args.buf = m->mux_buf; + nit_args.offset = m->mux_buf_offset; + nit_args.nit = m->si.nit; + nit_args.buf_sz = m->mux_buf_sz; + nit_args.continuity_counter = &nit_ctx->cc; + + m->mux_buf_offset += vidtv_psi_nit_write_into(nit_args); + nbytes = m->mux_buf_offset - initial_offset; m->num_streamed_si++; @@ -446,6 +459,8 @@ struct vidtv_mux *vidtv_mux_init(struct dvb_frontend *fe, m->pcr_pid = args.pcr_pid; m->transport_stream_id = args.transport_stream_id; m->priv = args.priv; + m->network_id = args.network_id; + m->network_name = kstrdup(args.network_name, GFP_KERNEL); m->timing.current_jiffies = get_jiffies_64(); if (args.channels) @@ -469,6 +484,7 @@ void vidtv_mux_destroy(struct vidtv_mux *m) vidtv_mux_pid_ctx_destroy(m); vidtv_channel_si_destroy(m); vidtv_channels_destroy(m); + kfree(m->network_name); vfree(m->mux_buf); kfree(m); } |