linux-kernel - [PATCH WIP 5/6] media: vidtv: Move s302m specific fields into encoder context

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Message-Id: <20200929032625.1548909-5-dwlsalmeida@gmail.com>
Date:   Tue, 29 Sep 2020 00:26:24 -0300
From:   "Daniel W. S. Almeida" <dwlsalmeida@...il.com>
To:     mchehab+huawei@...nel.org, r.verdejo@...sung.com,
        nicolas@...fresne.ca
Cc:     "Daniel W . S . Almeida" <dwlsalmeida@...il.com>,
        linux-media@...r.kernel.org, skhan@...uxfoundation.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH WIP 5/6] media: vidtv: Move s302m specific fields into encoder context

From: Daniel W. S. Almeida <dwlsalmeida@...il.com>

A few fields used only by the tone generator in the s302m encoder
are stored in struct vidtv_encoder. Move them into
struct vidtv_s302m_ctx instead. While we are at it: fix a
checkpatch warning for long lines.

Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@...il.com>
---
 .../media/test-drivers/vidtv/vidtv_encoder.h  |  3 --
 .../media/test-drivers/vidtv/vidtv_s302m.c    | 30 +++++++++++--------
 .../media/test-drivers/vidtv/vidtv_s302m.h    |  3 ++
 3 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/drivers/media/test-drivers/vidtv/vidtv_encoder.h b/drivers/media/test-drivers/vidtv/vidtv_encoder.h
index 65d81daef4c3..f742d566fbcb 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_encoder.h
+++ b/drivers/media/test-drivers/vidtv/vidtv_encoder.h
@@ -131,9 +131,6 @@ struct vidtv_encoder {
 	u32 encoder_buf_offset;
 
 	u64 sample_count;
-	int last_duration;
-	int note_offset;
-	enum musical_notes last_tone;
 
 	struct vidtv_access_unit *access_units;
 
diff --git a/drivers/media/test-drivers/vidtv/vidtv_s302m.c b/drivers/media/test-drivers/vidtv/vidtv_s302m.c
index 6e5e72ce90d0..f7afbda6335d 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_s302m.c
+++ b/drivers/media/test-drivers/vidtv/vidtv_s302m.c
@@ -233,36 +233,38 @@ static u16 vidtv_s302m_get_sample(struct vidtv_encoder *e)
 {
 	u16 sample;
 	int pos;
+	struct vidtv_s302m_ctx *ctx = e->ctx;
 
 	if (!e->src_buf) {
 		/*
 		 * Simple tone generator: play the tones at the
 		 * beethoven_5th_symphony array.
 		 */
-		if (e->last_duration <= 0) {
+		if (ctx->last_duration <= 0) {
 			if (e->src_buf_offset >= ARRAY_SIZE(beethoven_5th_symphony))
 				e->src_buf_offset = 0;
 
-			e->last_tone = beethoven_5th_symphony[e->src_buf_offset].note;
-			e->last_duration = beethoven_5th_symphony[e->src_buf_offset].duration * S302M_SAMPLING_RATE_HZ / COMPASS / 5;
+			ctx->last_tone = beethoven_5th_symphony[e->src_buf_offset].note;
+			ctx->last_duration = beethoven_5th_symphony[e->src_buf_offset].duration *
+					     S302M_SAMPLING_RATE_HZ / COMPASS / 5;
 			e->src_buf_offset++;
-			e->note_offset = 0;
+			ctx->note_offset = 0;
 		} else {
-			e->last_duration--;
+			ctx->last_duration--;
 		}
 
 		/* Handle silent */
-		if (!e->last_tone) {
+		if (!ctx->last_tone) {
 			e->src_buf_offset = 0;
 			return 0x8000;
 		}
 
-		pos = (2 * PI * e->note_offset * e->last_tone / S302M_SAMPLING_RATE_HZ);
+		pos = (2 * PI * ctx->note_offset * ctx->last_tone / S302M_SAMPLING_RATE_HZ);
 
 		if (pos == 360)
-			e->note_offset = 0;
+			ctx->note_offset = 0;
 		else
-			e->note_offset++;
+			ctx->note_offset++;
 
 		return (fixp_sin32(pos % (2 * PI)) >> 16) + 0x8000;
 	}
@@ -445,6 +447,10 @@ struct vidtv_encoder
 {
 	struct vidtv_encoder *e;
 	u32 priv_sz = sizeof(struct vidtv_s302m_ctx);
+	struct vidtv_s302m_ctx *ctx = kzalloc(priv_sz, GFP_KERNEL);
+
+	if (!ctx)
+		return NULL;
 
 	e = kzalloc(sizeof(*e), GFP_KERNEL);
 	if (!e)
@@ -460,16 +466,14 @@ struct vidtv_encoder
 	e->encoder_buf_offset = 0;
 
 	e->sample_count = 0;
-	e->last_duration = 0;
 
 	e->src_buf = (args.src_buf) ? args.src_buf : NULL;
 	e->src_buf_sz = (args.src_buf) ? args.src_buf_sz : 0;
 	e->src_buf_offset = 0;
 
 	e->is_video_encoder = false;
-	e->ctx = kzalloc(priv_sz, GFP_KERNEL);
-	if (!e->ctx)
-		return NULL;
+	e->ctx = ctx;
+	ctx->last_duration = 0;
 
 	e->encode = vidtv_s302m_encode;
 	e->clear = vidtv_s302m_clear;
diff --git a/drivers/media/test-drivers/vidtv/vidtv_s302m.h b/drivers/media/test-drivers/vidtv/vidtv_s302m.h
index eafe457e761d..a0101734e758 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_s302m.h
+++ b/drivers/media/test-drivers/vidtv/vidtv_s302m.h
@@ -38,6 +38,9 @@ struct vidtv_s302m_ctx {
 	struct vidtv_encoder *enc;
 	u32 frame_index;
 	u32 au_count;
+	int last_duration;
+	int note_offset;
+	enum musical_notes last_tone;
 };
 
 /**
-- 
2.28.0