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From: Vinod Koul <vkoul@kernel.org>
To: Takashi Iwai <tiwai@suse.com>, Jaroslav Kysela <perex@perex.cz>
Cc: "Vinod Koul" <vkoul@kernel.org>,
	"Amadeusz Sławiński" <amadeuszx.slawinski@linux.intel.com>,
	"Srinivas Kandagatla" <srinivas.kandagatla@linaro.org>,
	"Pierre-Louis Bossart" <pierre-louis.bossart@linux.intel.com>,
	"Charles Keepax" <ckeepax@opensource.cirrus.com>,
	alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: [PATCH v5 2/3] ALSA: compress: document the compress gapless audio state machine
Date: Mon, 29 Jun 2020 19:17:36 +0530	[thread overview]
Message-ID: <20200629134737.105993-3-vkoul@kernel.org> (raw)
In-Reply-To: <20200629134737.105993-1-vkoul@kernel.org>

Also documented the galpess transitions. Please note that these are not
really stream states, but show how the stream steps in gapless mode

Signed-off-by: Vinod Koul <vkoul@kernel.org>
---
 .../sound/designs/compress-offload.rst        | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/Documentation/sound/designs/compress-offload.rst b/Documentation/sound/designs/compress-offload.rst
index ad89af9b31c9..935f325dbc77 100644
--- a/Documentation/sound/designs/compress-offload.rst
+++ b/Documentation/sound/designs/compress-offload.rst
@@ -250,6 +250,38 @@ Sequence flow for gapless would be:
 
 (note: order for partial_drain and write for next track can be reversed as well)
 
+Gapless Playback SM
+===================
+
+For Gapless, we move from running state to partial drain and back, along
+with setting of meta_data and signalling for next track ::
+
+
+                                        +----------+
+                compr_drain_notify()    |          |
+              +------------------------>|  RUNNING |
+              |                         |          |
+              |                         +----------+
+              |                              |
+              |                              |
+              |                              | compr_next_track()
+              |                              |
+              |                              V
+              |                         +----------+
+              |                         |          |
+              |                         |NEXT_TRACK|
+              |                         |          |
+              |                         +----------+
+              |                              |
+              |                              |
+              |                              | compr_partial_drain()
+              |                              |
+              |                              V
+              |                         +----------+
+              |                         |          |
+              +------------------------ | PARTIAL_ |
+                                        |  DRAIN   |
+                                        +----------+
 
 Not supported
 =============
-- 
2.26.2


WARNING: multiple messages have this Message-ID (diff)
From: Vinod Koul <vkoul@kernel.org>
To: Takashi Iwai <tiwai@suse.com>, Jaroslav Kysela <perex@perex.cz>
Cc: alsa-devel@alsa-project.org,
	"Charles Keepax" <ckeepax@opensource.cirrus.com>,
	"Pierre-Louis Bossart" <pierre-louis.bossart@linux.intel.com>,
	linux-kernel@vger.kernel.org, "Vinod Koul" <vkoul@kernel.org>,
	"Srinivas Kandagatla" <srinivas.kandagatla@linaro.org>,
	"Amadeusz Sławiński" <amadeuszx.slawinski@linux.intel.com>
Subject: [PATCH v5 2/3] ALSA: compress: document the compress gapless audio state machine
Date: Mon, 29 Jun 2020 19:17:36 +0530	[thread overview]
Message-ID: <20200629134737.105993-3-vkoul@kernel.org> (raw)
In-Reply-To: <20200629134737.105993-1-vkoul@kernel.org>

Also documented the galpess transitions. Please note that these are not
really stream states, but show how the stream steps in gapless mode

Signed-off-by: Vinod Koul <vkoul@kernel.org>
---
 .../sound/designs/compress-offload.rst        | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/Documentation/sound/designs/compress-offload.rst b/Documentation/sound/designs/compress-offload.rst
index ad89af9b31c9..935f325dbc77 100644
--- a/Documentation/sound/designs/compress-offload.rst
+++ b/Documentation/sound/designs/compress-offload.rst
@@ -250,6 +250,38 @@ Sequence flow for gapless would be:
 
 (note: order for partial_drain and write for next track can be reversed as well)
 
+Gapless Playback SM
+===================
+
+For Gapless, we move from running state to partial drain and back, along
+with setting of meta_data and signalling for next track ::
+
+
+                                        +----------+
+                compr_drain_notify()    |          |
+              +------------------------>|  RUNNING |
+              |                         |          |
+              |                         +----------+
+              |                              |
+              |                              |
+              |                              | compr_next_track()
+              |                              |
+              |                              V
+              |                         +----------+
+              |                         |          |
+              |                         |NEXT_TRACK|
+              |                         |          |
+              |                         +----------+
+              |                              |
+              |                              |
+              |                              | compr_partial_drain()
+              |                              |
+              |                              V
+              |                         +----------+
+              |                         |          |
+              +------------------------ | PARTIAL_ |
+                                        |  DRAIN   |
+                                        +----------+
 
 Not supported
 =============
-- 
2.26.2


  parent reply	other threads:[~2020-06-29 21:36 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-29 13:47 [PATCH v5 0/3] ALSA: compress: Document stream states and fix gapless SM Vinod Koul
2020-06-29 13:47 ` Vinod Koul
2020-06-29 13:47 ` [PATCH v5 1/3] ALSA: compress: document the compress audio state machine Vinod Koul
2020-06-29 13:47   ` Vinod Koul
2020-07-07  9:54   ` Takashi Iwai
2020-07-07  9:54     ` Takashi Iwai
2020-06-29 13:47 ` Vinod Koul [this message]
2020-06-29 13:47   ` [PATCH v5 2/3] ALSA: compress: document the compress gapless " Vinod Koul
2020-07-07  9:54   ` Takashi Iwai
2020-07-07  9:54     ` Takashi Iwai
2020-06-29 13:47 ` [PATCH v5 3/3] ALSA: compress: fix partial_drain completion state Vinod Koul
2020-06-29 13:47   ` Vinod Koul
2020-07-01 14:20   ` Charles Keepax
2020-07-01 14:20     ` Charles Keepax
2020-07-01 15:04     ` Vinod Koul
2020-07-01 15:04       ` Vinod Koul
2020-07-07  9:55   ` Takashi Iwai
2020-07-07  9:55     ` Takashi Iwai

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