From: Sava Jakovljev <sava.jakovljev@teufel.de>
Date: Mon, 5 Jul 2021 18:28:34 +0000 (+0200)
Subject: pcm: multi plugin - adjust appl_ptr on rewind/forward operations
X-Git-Tag: v1.2.6~28
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=1aeea94ce81d2ccead17399a99bd0ecfe53025f0;p=alsa-lib.git

pcm: multi plugin - adjust appl_ptr on rewind/forward operations

When doing rewind or forward operations, application pointer needs to
be properly adjusted, in the same way when doing commit/write
operations.

Fixes: https://github.com/alsa-project/alsa-lib/pull/161
Signed-off-by: Sava Jakovljev <sava.jakovljev@teufel.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

diff --git a/src/pcm/pcm_multi.c b/src/pcm/pcm_multi.c
index 5fa09b9b..7fb21276 100644
--- a/src/pcm/pcm_multi.c
+++ b/src/pcm/pcm_multi.c
@@ -669,6 +669,7 @@ static snd_pcm_sframes_t snd_pcm_multi_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t
 				return -EIO;
 		}
 	}
+	snd_pcm_mmap_appl_backward(pcm, frames);
 	return frames;
 }
 
@@ -699,6 +700,7 @@ static snd_pcm_sframes_t snd_pcm_multi_forward(snd_pcm_t *pcm, snd_pcm_uframes_t
 				return -EIO;
 		}
 	}
+	snd_pcm_mmap_appl_forward(pcm, frames);
 	return frames;
 }
 
@@ -782,8 +784,7 @@ static snd_pcm_sframes_t snd_pcm_multi_mmap_commit(snd_pcm_t *pcm,
 		if ((snd_pcm_uframes_t)result != size)
 			return -EIO;
 	}
-	multi->appl_ptr += size;
-	multi->appl_ptr %= pcm->boundary;
+	snd_pcm_mmap_appl_forward(pcm, size);
 	return size;
 }