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Date: Tue, 24 Nov 2020 12:06:23 +0100
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: unlisted-recipients:; (no To-header on input)
Cc: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
"Daniel W. S. Almeida" <dwlsalmeida@...il.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: [PATCH 27/31] media: vidtv: simplify NIT write function
- pass struct vidtv_psi_nit_write_args as a pointer;
- avoid initializing struct fields multiple times.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
drivers/media/test-drivers/vidtv/vidtv_mux.c | 2 +-
drivers/media/test-drivers/vidtv/vidtv_psi.c | 91 ++++++++++----------
drivers/media/test-drivers/vidtv/vidtv_psi.h | 2 +-
3 files changed, 47 insertions(+), 48 deletions(-)
diff --git a/drivers/media/test-drivers/vidtv/vidtv_mux.c b/drivers/media/test-drivers/vidtv/vidtv_mux.c
index ff1c7c586838..77d691f4ff92 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_mux.c
+++ b/drivers/media/test-drivers/vidtv/vidtv_mux.c
@@ -204,7 +204,7 @@ static u32 vidtv_mux_push_si(struct vidtv_mux *m)
nit_args.offset = m->mux_buf_offset;
nit_args.continuity_counter = &nit_ctx->cc;
- m->mux_buf_offset += vidtv_psi_nit_write_into(nit_args);
+ m->mux_buf_offset += vidtv_psi_nit_write_into(&nit_args);
eit_args.offset = m->mux_buf_offset;
eit_args.continuity_counter = &eit_ctx->cc;
diff --git a/drivers/media/test-drivers/vidtv/vidtv_psi.c b/drivers/media/test-drivers/vidtv/vidtv_psi.c
index ffa0ff493d04..87fe3aedc8a8 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_psi.c
+++ b/drivers/media/test-drivers/vidtv/vidtv_psi.c
@@ -1647,53 +1647,60 @@ struct vidtv_psi_table_nit
return NULL;
}
-u32 vidtv_psi_nit_write_into(struct vidtv_psi_nit_write_args args)
+u32 vidtv_psi_nit_write_into(struct vidtv_psi_nit_write_args *args)
{
- struct vidtv_psi_desc *table_descriptor = args.nit->descriptor;
- struct vidtv_psi_table_transport *transport = args.nit->transport;
+ struct header_write_args h_args = {
+ .dest_buf = args->buf,
+ .dest_offset = args->offset,
+ .h = &args->nit->header,
+ .pid = VIDTV_NIT_PID,
+ .dest_buf_sz = args->buf_sz,
+ };
+ struct psi_write_args psi_args = {
+ .dest_buf = args->buf,
+ .from = &args->nit->bitfield,
+ .len = sizeof_field(struct vidtv_psi_table_nit, bitfield),
+ .pid = VIDTV_NIT_PID,
+ .new_psi_section = false,
+ .is_crc = false,
+ .dest_buf_sz = args->buf_sz,
+ };
+ struct desc_write_args d_args = {
+ .dest_buf = args->buf,
+ .pid = VIDTV_NIT_PID,
+ .dest_buf_sz = args->buf_sz,
+ };
+ struct crc32_write_args c_args = {
+ .dest_buf = args->buf,
+ .pid = VIDTV_NIT_PID,
+ .dest_buf_sz = args->buf_sz,
+ };
+ struct vidtv_psi_desc *table_descriptor = args->nit->descriptor;
+ struct vidtv_psi_table_transport *transport = args->nit->transport;
struct vidtv_psi_desc *transport_descriptor;
- struct header_write_args h_args = {};
- struct psi_write_args psi_args = {};
- struct desc_write_args d_args = {};
- struct crc32_write_args c_args = {};
u32 crc = INITIAL_CRC;
u32 nbytes = 0;
- vidtv_psi_nit_table_update_sec_len(args.nit);
+ vidtv_psi_nit_table_update_sec_len(args->nit);
- h_args.dest_buf = args.buf;
- h_args.dest_offset = args.offset;
- h_args.h = &args.nit->header;
- h_args.pid = VIDTV_NIT_PID;
- h_args.continuity_counter = args.continuity_counter;
- h_args.dest_buf_sz = args.buf_sz;
+ h_args.continuity_counter = args->continuity_counter;
h_args.crc = &crc;
nbytes += vidtv_psi_table_header_write_into(&h_args);
/* write the bitfield */
- psi_args.dest_buf = args.buf;
- psi_args.from = &args.nit->bitfield;
- psi_args.len = sizeof_field(struct vidtv_psi_table_nit, bitfield);
- psi_args.dest_offset = args.offset + nbytes;
- psi_args.pid = VIDTV_NIT_PID;
- psi_args.new_psi_section = false;
- psi_args.continuity_counter = args.continuity_counter;
- psi_args.is_crc = false;
- psi_args.dest_buf_sz = args.buf_sz;
+ psi_args.dest_offset = args->offset + nbytes;
+ psi_args.continuity_counter = args->continuity_counter;
psi_args.crc = &crc;
nbytes += vidtv_psi_ts_psi_write_into(&psi_args);
while (table_descriptor) {
/* write the descriptors, if any */
- d_args.dest_buf = args.buf;
- d_args.dest_offset = args.offset + nbytes;
+ d_args.dest_offset = args->offset + nbytes;
d_args.desc = table_descriptor;
- d_args.pid = VIDTV_NIT_PID;
- d_args.continuity_counter = args.continuity_counter;
- d_args.dest_buf_sz = args.buf_sz;
+ d_args.continuity_counter = args->continuity_counter;
d_args.crc = &crc;
nbytes += vidtv_psi_desc_write_into(&d_args);
@@ -1702,21 +1709,19 @@ u32 vidtv_psi_nit_write_into(struct vidtv_psi_nit_write_args args)
}
/* write the second bitfield */
- psi_args.dest_buf = args.buf;
- psi_args.from = &args.nit->bitfield2;
+ psi_args.from = &args->nit->bitfield2;
psi_args.len = sizeof_field(struct vidtv_psi_table_nit, bitfield2);
- psi_args.dest_offset = args.offset + nbytes;
- psi_args.pid = VIDTV_NIT_PID;
+ psi_args.dest_offset = args->offset + nbytes;
nbytes += vidtv_psi_ts_psi_write_into(&psi_args);
+ psi_args.len = sizeof_field(struct vidtv_psi_table_transport, transport_id) +
+ sizeof_field(struct vidtv_psi_table_transport, network_id) +
+ sizeof_field(struct vidtv_psi_table_transport, bitfield);
while (transport) {
/* write the transport sections, if any */
psi_args.from = transport;
- psi_args.len = sizeof_field(struct vidtv_psi_table_transport, transport_id) +
- sizeof_field(struct vidtv_psi_table_transport, network_id) +
- sizeof_field(struct vidtv_psi_table_transport, bitfield);
- psi_args.dest_offset = args.offset + nbytes;
+ psi_args.dest_offset = args->offset + nbytes;
nbytes += vidtv_psi_ts_psi_write_into(&psi_args);
@@ -1724,12 +1729,9 @@ u32 vidtv_psi_nit_write_into(struct vidtv_psi_nit_write_args args)
while (transport_descriptor) {
/* write the transport descriptors, if any */
- d_args.dest_buf = args.buf;
- d_args.dest_offset = args.offset + nbytes;
+ d_args.dest_offset = args->offset + nbytes;
d_args.desc = transport_descriptor;
- d_args.pid = VIDTV_NIT_PID;
- d_args.continuity_counter = args.continuity_counter;
- d_args.dest_buf_sz = args.buf_sz;
+ d_args.continuity_counter = args->continuity_counter;
d_args.crc = &crc;
nbytes += vidtv_psi_desc_write_into(&d_args);
@@ -1740,12 +1742,9 @@ u32 vidtv_psi_nit_write_into(struct vidtv_psi_nit_write_args args)
transport = transport->next;
}
- c_args.dest_buf = args.buf;
- c_args.dest_offset = args.offset + nbytes;
+ c_args.dest_offset = args->offset + nbytes;
c_args.crc = cpu_to_be32(crc);
- c_args.pid = VIDTV_NIT_PID;
- c_args.continuity_counter = args.continuity_counter;
- c_args.dest_buf_sz = args.buf_sz;
+ c_args.continuity_counter = args->continuity_counter;
/* Write the CRC32 at the end */
nbytes += table_section_crc32_write_into(&c_args);
diff --git a/drivers/media/test-drivers/vidtv/vidtv_psi.h b/drivers/media/test-drivers/vidtv/vidtv_psi.h
index 5065ddb805b1..9aa43272ecfa 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_psi.h
+++ b/drivers/media/test-drivers/vidtv/vidtv_psi.h
@@ -710,7 +710,7 @@ struct vidtv_psi_nit_write_args {
* equal to the size of the NIT, since more space is needed for TS headers during TS
* encapsulation.
*/
-u32 vidtv_psi_nit_write_into(struct vidtv_psi_nit_write_args args);
+u32 vidtv_psi_nit_write_into(struct vidtv_psi_nit_write_args *args);
void vidtv_psi_nit_table_destroy(struct vidtv_psi_table_nit *nit);
--
2.28.0
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