From patchwork Thu Jun 25 15:46:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinod Koul X-Patchwork-Id: 11625665 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DDED660D for ; Thu, 25 Jun 2020 16:27:53 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 73BE1204EA for ; Thu, 25 Jun 2020 16:27:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="gGpJdLmq"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="vBvmjOSi" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 73BE1204EA Authentication-Results: mail.kernel.org; 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Thu, 25 Jun 2020 18:25:28 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id 3E800F80277; Thu, 25 Jun 2020 18:25:25 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=-0.1 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE,SPF_PASS autolearn=disabled version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id E54D2F80137 for ; Thu, 25 Jun 2020 18:25:18 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz E54D2F80137 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="vBvmjOSi" Received: from localhost.localdomain (unknown [171.61.66.58]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D198A2081A; Thu, 25 Jun 2020 15:47:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593100028; bh=L9ED3CmPmrCq6aX9512m6F+JVxfMbMf1Yg5lgmCu1Dc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vBvmjOSiGpHUKSnl9WcOnpYbcnN0Jt2U3/xWMuaG9IbOSiOusHErTQPD0+0SCy10f gMO56qo/BsGaIQ0P3597NMz4p9qC+KPD0RAMXEiGWhLcGn+3ZzGDpDXkpNJa0IcGBy YuQ+23VJM6VXNy+cY6WR118g8yiYygJcCu6k7ygU= From: Vinod Koul To: Takashi Iwai , Jaroslav Kysela Subject: [PATCH v3 1/3] ALSA: compress: document the compress audio state machine Date: Thu, 25 Jun 2020 21:16:49 +0530 Message-Id: <20200625154651.99758-2-vkoul@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200625154651.99758-1-vkoul@kernel.org> References: <20200625154651.99758-1-vkoul@kernel.org> MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org, Charles Keepax , Pierre-Louis Bossart , linux-kernel@vger.kernel.org, Vinod Koul , Srinivas Kandagatla X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" So we had some discussions of the stream states, so I thought it is a good idea to document the state transitions, so add it documentation Signed-off-by: Vinod Koul Reviewed-by: Charles Keepax --- .../sound/designs/compress-offload.rst | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/Documentation/sound/designs/compress-offload.rst b/Documentation/sound/designs/compress-offload.rst index ad4bfbdacc83..b6e9025ae105 100644 --- a/Documentation/sound/designs/compress-offload.rst +++ b/Documentation/sound/designs/compress-offload.rst @@ -151,6 +151,57 @@ Modifications include: - Addition of encoding options when required (derived from OpenMAX IL) - Addition of rateControlSupported (missing in OpenMAX AL) +State Machine +============= + +The compressed audio stream state machine is described below :: + + +----------+ + | | + | OPEN | + | | + +----------+ + | + | + | compr_set_params() + | + v + compr_free() +----------+ + +------------------------------------| | + | | SETUP | + | +------------------------>| |<-------------------------+ + | | compr_drain_notify() +----------+ | + | | or | | + | | compr_stop() | | + | | | compr_write() | + | | | | + | | v | + | | +----------+ | + | | | | compr_free() | + | | | PREPARE |---------------> A | + | | | | | + | | +----------+ | + | | | | + | | | | + | | | compr_start() | + | | | | + | | v | + | +----------+ +----------+ | + | | | compr_drain() | | compr_stop() | + | | DRAIN |<-------------------| RUNNING |--------------------------+ + | | | | | | + | +----------+ +----------+ | + | | ^ | + | A | | | + | | compr_pause() | | compr_resume() | + | | | | | + | v v | | + | +----------+ +----------+ | + | | | | | compr_stop() | + +--->| FREE | | PAUSE |---------------------------+ + | | | | + +----------+ +----------+ + Gapless Playback ================ From patchwork Thu Jun 25 15:46:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinod Koul X-Patchwork-Id: 11625659 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 86F2990 for ; Thu, 25 Jun 2020 16:26:13 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B8B7C20706 for ; Thu, 25 Jun 2020 16:26:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="TTez/TDQ"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="oZm/TjUb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B8B7C20706 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 20AE51906; Thu, 25 Jun 2020 18:25:24 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 20AE51906 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1593102371; bh=hx7r4O1r7ywjtPb9iFcLRAnuQzWlpCbea5qfWNcioug=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=TTez/TDQIyfJiK0cZ+FqJfG0EOFWJ9TA0Nx7QEmpGw/1D0Tn3KgLKjO5ECJEXlVGw f2fVCjqPepfWId1I/PmnT4lajFFZs8rPCJSXS4yMxVTBZANW6+FytbygM8eRGxhoLb jmJjEWHJIQrQNvsCY3cIl+0m5wB+A/ivx9RBLJyQ= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 4D6A9F8023E; Thu, 25 Jun 2020 18:25:23 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id CA42BF80259; Thu, 25 Jun 2020 18:25:21 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=-0.1 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE,SPF_PASS autolearn=disabled version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id DCCA0F80218 for ; Thu, 25 Jun 2020 18:25:18 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz DCCA0F80218 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="oZm/TjUb" Received: from localhost.localdomain (unknown [171.61.66.58]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 14C1720706; Thu, 25 Jun 2020 15:47:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593100031; bh=hx7r4O1r7ywjtPb9iFcLRAnuQzWlpCbea5qfWNcioug=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oZm/TjUbqbsyhFwi+vO160VREwyB/Ptj+AzI/dHKIQyBzKF8PDtkXXUgI6FdSpUTP 3hO4cs/IFrU5uZsTp/vKf/BiqWFMw7XmmC89ONWDzic9aPDHvhh2hKoFgKuSzSSeoQ 3m/VOfmebBHThJe1IdGZmNBbdV+jdU+w9WW6FESk= From: Vinod Koul To: Takashi Iwai , Jaroslav Kysela Subject: [PATCH v3 2/3] ALSA: compress: document the compress gapless audio state machine Date: Thu, 25 Jun 2020 21:16:50 +0530 Message-Id: <20200625154651.99758-3-vkoul@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200625154651.99758-1-vkoul@kernel.org> References: <20200625154651.99758-1-vkoul@kernel.org> MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org, Charles Keepax , Pierre-Louis Bossart , linux-kernel@vger.kernel.org, Vinod Koul , Srinivas Kandagatla X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" 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 --- .../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 b6e9025ae105..82950dbbc4a9 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 ============= From patchwork Thu Jun 25 15:46:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinod Koul X-Patchwork-Id: 11625669 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3FA0960D for ; Thu, 25 Jun 2020 16:28:28 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CA410204EA for ; Thu, 25 Jun 2020 16:28:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="HrTJDCZf"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="TtWCfzOy" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CA410204EA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 633811914; Thu, 25 Jun 2020 18:27:39 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 633811914 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1593102506; bh=IgCDJ/4NXHUUIMvtdNOkk30i4IMtWPYAHp9uh6q/7II=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=HrTJDCZflaMZv2MxSyEbjobtPjcmywAUmxRDeBj5AR7LSUXIxzRR1GUnRfwMm806n s4ohhm94tyv44W8kNNgQbGzyf5CBvJMwrSUV+UVEUKFgPFCnXOorHSSSXxI4WOvXxs 9FX9f3/8lVEPu+GL1vLNZAEcL2MMDSZGXWJHSpF8= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 3B40EF802A8; Thu, 25 Jun 2020 18:25:31 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id 5FBDCF802A1; Thu, 25 Jun 2020 18:25:27 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=-0.1 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id DA01EF800B2 for ; Thu, 25 Jun 2020 18:25:18 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz DA01EF800B2 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="TtWCfzOy" Received: from localhost.localdomain (unknown [171.61.66.58]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 47BB520836; Thu, 25 Jun 2020 15:47:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593100034; bh=IgCDJ/4NXHUUIMvtdNOkk30i4IMtWPYAHp9uh6q/7II=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TtWCfzOyrAUT8ZVl5yyPzzbekoxnU/i2wT7XzsMfHFK/69iJnys9T9xcrJ9RJjcwW 2vV0hBG5e2qp0rfi9B24YzOQR96N2BFb6/BmFhRO0ku3Mw6KgtkBk/M3QnWwoacuV2 5XDtWW9mj542HRoiC5zD7dMIv/nF91cbiha2xxjk= From: Vinod Koul To: Takashi Iwai , Jaroslav Kysela Subject: [PATCH v3 3/3] ALSA: compress: fix partial_drain completion state Date: Thu, 25 Jun 2020 21:16:51 +0530 Message-Id: <20200625154651.99758-4-vkoul@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200625154651.99758-1-vkoul@kernel.org> References: <20200625154651.99758-1-vkoul@kernel.org> MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org, Charles Keepax , Pierre-Louis Bossart , linux-kernel@vger.kernel.org, Vinod Koul , Srinivas Kandagatla X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On partial_drain completion we should be in SNDRV_PCM_STATE_RUNNING state, so set that for partially draining streams in snd_compr_drain_notify() and use a flag for partially draining streams While at it, add locks for stream state change in snd_compr_drain_notify() as well. Fixes: f44f2a5417b2 ("ALSA: compress: fix drain calls blocking other compress functions (v6)") Reviewed-by: Srinivas Kandagatla Tested-by: Srinivas Kandagatla Signed-off-by: Vinod Koul --- include/sound/compress_driver.h | 12 +++++++++++- sound/core/compress_offload.c | 4 ++++ 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h index 3df8d8c90191..93a5897201ea 100644 --- a/include/sound/compress_driver.h +++ b/include/sound/compress_driver.h @@ -66,6 +66,7 @@ struct snd_compr_runtime { * @direction: stream direction, playback/recording * @metadata_set: metadata set flag, true when set * @next_track: has userspace signal next track transition, true when set + * @partial_drain: undergoing partial_drain for stream, true when set * @private_data: pointer to DSP private data * @dma_buffer: allocated buffer if any */ @@ -78,6 +79,7 @@ struct snd_compr_stream { enum snd_compr_direction direction; bool metadata_set; bool next_track; + bool partial_drain; void *private_data; struct snd_dma_buffer dma_buffer; }; @@ -187,7 +189,15 @@ static inline void snd_compr_drain_notify(struct snd_compr_stream *stream) if (snd_BUG_ON(!stream)) return; - stream->runtime->state = SNDRV_PCM_STATE_SETUP; + mutex_lock(&stream->device->lock); + /* for partial_drain case we are back to running state on success */ + if (stream->partial_drain) { + stream->runtime->state = SNDRV_PCM_STATE_RUNNING; + stream->partial_drain = false; /* clear this flag as well */ + } else { + stream->runtime->state = SNDRV_PCM_STATE_SETUP; + } + mutex_unlock(&stream->device->lock); wake_up(&stream->runtime->sleep); } diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index e618580feac4..1c4b2cf450a0 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -803,6 +803,9 @@ static int snd_compr_stop(struct snd_compr_stream *stream) retval = stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_STOP); if (!retval) { + /* clear flags and stop any drain wait */ + stream->partial_drain = false; + stream->metadata_set = false; snd_compr_drain_notify(stream); stream->runtime->total_bytes_available = 0; stream->runtime->total_bytes_transferred = 0; @@ -960,6 +963,7 @@ static int snd_compr_partial_drain(struct snd_compr_stream *stream) if (stream->next_track == false) return -EPERM; + stream->partial_drain = true; retval = stream->ops->trigger(stream, SND_COMPR_TRIGGER_PARTIAL_DRAIN); if (retval) { pr_debug("Partial drain returned failure\n");