From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: [PATCH 3/3] ALSA: pcm: Unify delay calculation in snd_pcm_status() and snd_pcm_delay() Date: Mon, 16 Apr 2018 14:14:17 +0200 Message-ID: <20180416121417.27452-4-tiwai@suse.de> References: <20180416121417.27452-1-tiwai@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id 6B72C2673C4 for ; Mon, 16 Apr 2018 14:14:19 +0200 (CEST) Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id BFD7AADE2 for ; Mon, 16 Apr 2018 12:14:18 +0000 (UTC) In-Reply-To: <20180416121417.27452-1-tiwai@suse.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Yet another slight code cleanup: there are two places where calculating the PCM delay, and they can be unified in a single helper. It reduces the multiple open codes. Signed-off-by: Takashi Iwai --- sound/core/pcm_native.c | 36 +++++++++++++++--------------------- 1 file changed, 15 insertions(+), 21 deletions(-) diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index eddb0cd6d1eb..81bbe0b3284b 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -857,6 +857,18 @@ static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, return err; } +static inline snd_pcm_uframes_t +snd_pcm_calc_delay(struct snd_pcm_substream *substream) +{ + snd_pcm_uframes_t delay; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + delay = snd_pcm_playback_hw_avail(substream->runtime); + else + delay = snd_pcm_capture_avail(substream->runtime); + return delay + substream->runtime->delay; +} + int snd_pcm_status(struct snd_pcm_substream *substream, struct snd_pcm_status *status) { @@ -909,19 +921,7 @@ int snd_pcm_status(struct snd_pcm_substream *substream, status->appl_ptr = runtime->control->appl_ptr; status->hw_ptr = runtime->status->hw_ptr; status->avail = snd_pcm_avail(substream); - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || - runtime->status->state == SNDRV_PCM_STATE_DRAINING) { - status->delay = runtime->buffer_size - status->avail; - status->delay += runtime->delay; - } else - status->delay = 0; - } else { - if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) - status->delay = status->avail + runtime->delay; - else - status->delay = 0; - } + status->delay = snd_pcm_calc_delay(substream); status->avail_max = runtime->avail_max; status->overrange = runtime->overrange; runtime->avail_max = 0; @@ -2655,19 +2655,13 @@ static int snd_pcm_hwsync(struct snd_pcm_substream *substream) static snd_pcm_sframes_t snd_pcm_delay(struct snd_pcm_substream *substream) { - struct snd_pcm_runtime *runtime = substream->runtime; int err; snd_pcm_sframes_t n = 0; snd_pcm_stream_lock_irq(substream); err = do_pcm_hwsync(substream); - if (!err) { - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - n = snd_pcm_playback_hw_avail(runtime); - else - n = snd_pcm_capture_avail(runtime); - n += runtime->delay; - } + if (!err) + n = snd_pcm_calc_delay(substream); snd_pcm_stream_unlock_irq(substream); return err < 0 ? err : n; } -- 2.16.3