diff mbox series

[05/31] media: vidtv: fix the tone generator logic

Message ID 4421cda35fe8d3d80687f27030108b9dcdc924d1.1606215584.git.mchehab+huawei@kernel.org
State Accepted
Commit ab6bad0a4db69009fb7b2a50b8929b2bcaf7824d
Headers show
Series vidtv: address several issues at the driver | expand

Commit Message

Mauro Carvalho Chehab Nov. 24, 2020, 11:06 a.m. UTC
The tone generator logic were repeating the song after the
first silent. There's also a wrong logic at the note
offset calculus, which may create some noise.

Fix it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 drivers/media/test-drivers/vidtv/vidtv_s302m.c | 14 ++++----------
 drivers/media/test-drivers/vidtv/vidtv_s302m.h |  2 +-
 2 files changed, 5 insertions(+), 11 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/test-drivers/vidtv/vidtv_s302m.c b/drivers/media/test-drivers/vidtv/vidtv_s302m.c
index cbf89530aafe..fdb3d649c516 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_s302m.c
+++ b/drivers/media/test-drivers/vidtv/vidtv_s302m.c
@@ -253,18 +253,12 @@  static u16 vidtv_s302m_get_sample(struct vidtv_encoder *e)
 			ctx->last_duration--;
 		}
 
-		/* Handle silent */
-		if (!ctx->last_tone) {
-			e->src_buf_offset = 0;
+		/* Handle pause notes */
+		if (!ctx->last_tone)
 			return 0x8000;
-		}
 
-		pos = (2 * PI * ctx->note_offset * ctx->last_tone / S302M_SAMPLING_RATE_HZ);
-
-		if (pos == 360)
-			ctx->note_offset = 0;
-		else
-			ctx->note_offset++;
+		pos = (2 * PI * ctx->note_offset * ctx->last_tone) / S302M_SAMPLING_RATE_HZ;
+		ctx->note_offset++;
 
 		return (fixp_sin32(pos % (2 * PI)) >> 16) + 0x8000;
 	}
diff --git a/drivers/media/test-drivers/vidtv/vidtv_s302m.h b/drivers/media/test-drivers/vidtv/vidtv_s302m.h
index a0101734e758..e990b755bb20 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_s302m.h
+++ b/drivers/media/test-drivers/vidtv/vidtv_s302m.h
@@ -39,7 +39,7 @@  struct vidtv_s302m_ctx {
 	u32 frame_index;
 	u32 au_count;
 	int last_duration;
-	int note_offset;
+	unsigned int note_offset;
 	enum musical_notes last_tone;
 };