threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/*
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* Copyright (C) 2015 MediaTek Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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/******************************************************************************
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*
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*
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* Filename:
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* ---------
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* mtk-soc-pcm-common
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*
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* Project:
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* --------
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* mtk-soc-pcm-common function
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*
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*
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* Description:
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* ------------
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* common function
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*
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* Author:
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* -------
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* Chipeng Chang (MTK02308)
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*
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*---------------------------------------------------------------------------
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---
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*
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****************************************************************************/
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#include "mtk-soc-pcm-common.h"
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unsigned long audio_frame_to_bytes(struct snd_pcm_substream *substream,
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unsigned long count)
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{
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unsigned long bytes = count;
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struct snd_pcm_runtime *runtime = substream->runtime;
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if (runtime->format == SNDRV_PCM_FORMAT_S32_LE ||
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runtime->format == SNDRV_PCM_FORMAT_U32_LE)
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bytes = bytes << 2;
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else
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bytes = bytes << 1;
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if (runtime->channels == 2)
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bytes = bytes << 1;
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else if (runtime->channels == 4)
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bytes = bytes << 2;
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else if (runtime->channels != 1)
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bytes = bytes << 3;
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return bytes;
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}
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unsigned long audio_bytes_to_frame(struct snd_pcm_substream *substream,
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unsigned long bytes)
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{
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unsigned long count = bytes;
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struct snd_pcm_runtime *runtime = substream->runtime;
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if (runtime->format == SNDRV_PCM_FORMAT_S32_LE ||
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runtime->format == SNDRV_PCM_FORMAT_U32_LE)
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count = count >> 2;
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else
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count = count >> 1;
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if (runtime->channels == 2)
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count = count >> 1;
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else if (runtime->channels == 4)
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count = count >> 2;
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else if (runtime->channels != 1)
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count = count >> 3;
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return count;
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}
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