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media: vidtv: simplify parameters for vidtv_pes_write_stuffing() 

Instead of passing struct pes_ts_header_write_args fields as
function parameters, just pass a pointer to the struct.

That would allow adding more args without needing to change
the function prototype.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2020-09-21 07:34:42 +02:00
parent d6a36eda73
commit 09196d86e3
1 changed files with 18 additions and 24 deletions
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42
drivers/media/test-drivers/vidtv/vidtv_pes.c
View File

@ -176,37 +176,34 @@ static u32 vidtv_pes_write_h(struct pes_header_write_args args)
return nbytes; return nbytes;
} }
static u32 vidtv_pes_write_stuffing(void *dest_buf, static u32 vidtv_pes_write_stuffing(struct pes_ts_header_write_args *args,
u32 dest_offset, u32 dest_offset)
u32 n_stuffing_bytes,
u32 buf_sz)
{ {
u32 nbytes = 0; u32 nbytes = 0;
struct vidtv_mpeg_ts_adaption ts_adap = {}; struct vidtv_mpeg_ts_adaption ts_adap = {};
u32 stuff_nbytes = 0; u32 stuff_nbytes;
if (!n_stuffing_bytes) if (!args->n_stuffing_bytes)
goto out; goto out;
if (n_stuffing_bytes > PES_TS_HEADER_MAX_STUFFING_BYTES) { if (args->n_stuffing_bytes > PES_TS_HEADER_MAX_STUFFING_BYTES) {
pr_warn_ratelimited("More than %d stuffing bytes for a PES packet!\n", pr_warn_ratelimited("More than %d stuffing bytes for a PES packet!\n",
PES_TS_HEADER_MAX_STUFFING_BYTES); PES_TS_HEADER_MAX_STUFFING_BYTES);
n_stuffing_bytes = PES_TS_HEADER_MAX_STUFFING_BYTES; args->n_stuffing_bytes = PES_TS_HEADER_MAX_STUFFING_BYTES;
} }
/* the AF will only be its 'length' field with a value of zero */ /* the AF will only be its 'length' field with a value of zero */
if (n_stuffing_bytes == 1) { if (args->n_stuffing_bytes == 1) {
nbytes += vidtv_memset(dest_buf, nbytes += vidtv_memset(args->dest_buf,
dest_offset + nbytes, dest_offset + nbytes,
buf_sz, args->dest_buf_sz,
0, 0,
n_stuffing_bytes); args->n_stuffing_bytes);
goto out; goto out;
} }
stuff_nbytes = n_stuffing_bytes - sizeof(ts_adap); stuff_nbytes = args->n_stuffing_bytes - sizeof(ts_adap);
/* length _immediately_ following 'adaptation_field_length' */ /* length _immediately_ following 'adaptation_field_length' */
ts_adap.length = sizeof(ts_adap) - ts_adap.length = sizeof(ts_adap) -
@ -214,24 +211,24 @@ static u32 vidtv_pes_write_stuffing(void *dest_buf,
stuff_nbytes; stuff_nbytes;
/* write the adap after the TS header */ /* write the adap after the TS header */
nbytes += vidtv_memcpy(dest_buf, nbytes += vidtv_memcpy(args->dest_buf,
dest_offset + nbytes, dest_offset + nbytes,
buf_sz, args->dest_buf_sz,
&ts_adap, &ts_adap,
sizeof(ts_adap)); sizeof(ts_adap));
/* write the stuffing bytes */ /* write the stuffing bytes */
nbytes += vidtv_memset(dest_buf, nbytes += vidtv_memset(args->dest_buf,
dest_offset + nbytes, dest_offset + nbytes,
buf_sz, args->dest_buf_sz,
TS_FILL_BYTE, TS_FILL_BYTE,
stuff_nbytes); stuff_nbytes);
out: out:
if (nbytes != n_stuffing_bytes) if (nbytes != args->n_stuffing_bytes)
pr_warn_ratelimited("write size was %d, expected %d\n", pr_warn_ratelimited("write size was %d, expected %d\n",
nbytes, nbytes,
n_stuffing_bytes); args->n_stuffing_bytes);
return nbytes; return nbytes;
} }
@ -261,10 +258,7 @@ static u32 vidtv_pes_write_ts_h(struct pes_ts_header_write_args args)
sizeof(ts_header)); sizeof(ts_header));
/* write stuffing, if any */ /* write stuffing, if any */
nbytes += vidtv_pes_write_stuffing(args.dest_buf, nbytes += vidtv_pes_write_stuffing(&args, args.dest_offset + nbytes);
args.dest_offset + nbytes,
args.n_stuffing_bytes,
args.dest_buf_sz);
return nbytes; return nbytes;
} }