125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
/*
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* linux/sound/aw_rpaf/substream.h -- Remote Process Audio Framework Layer
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*
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* (C) Copyright 2019-2025
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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* yumingfeng <yumingfeng@allwinnertech.com>
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*
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* some simple description for this code
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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*/
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#ifndef _AW_RPAF_SUBSTREAM_H_
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#define _AW_RPAF_SUBSTREAM_H_
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#include <sound/pcm.h>
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#include <sound/aw_rpaf/common.h>
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#include <sound/aw_rpaf/component.h>
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struct sram_buffer {
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void *buf_addr;
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unsigned char used;
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struct list_head list;
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};
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/*
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* param[0] = MSGBOX_SOC_DSP_AUDIO_COMMAND->MSGBOX_SOC_DSP_*_COMMAND
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* param[1] = *snd_soc_dsp_substream
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* param[2] = SND_SOC_DSP_*_COMMAND
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* param[3] = *params/NULL
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*/
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struct snd_soc_dsp_substream {
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uint32_t id;
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unsigned char used;
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uint32_t cmd_val;
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uint32_t params_val;
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uint32_t audio_standby;
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struct snd_soc_dsp_pcm_params params;
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/* share data address */
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uint32_t input_addr;
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uint32_t output_addr;
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/* data_length < buf_size */
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uint32_t input_size;
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uint32_t output_size;
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/*API调用完毕之后需要判断该值 */
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int32_t ret_val;
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struct list_head list;
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};
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//共享内存分配：
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//（1）用于音频对象的存储
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//（2）用于音频共享数据
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//策略：
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//每次都会传输共用一个对象区域，附带共享音频buffer
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struct snd_soc_dsp_queue_item {
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struct snd_soc_dsp_substream *soc_substream;
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struct snd_soc_dsp_component *soc_comp;
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struct snd_soc_dsp_mixer *soc_mixer;
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struct snd_soc_dsp_debug *soc_debug;
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uint32_t msg_val;
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uint32_t cmd_val;
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uint32_t param_val;
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};
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/*
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* For DSP Audio Framework API
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*/
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struct snd_dsp_hal_substream_ops {
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/*
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* ALSA PCM audio operations - all optional.
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* Called by soc-core during audio PCM operations.
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*/
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/* 对接声卡的开关操作 */
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//int32_t (*startup)(struct snd_dsp_hal_substream *substream);
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int32_t (*startup)(void *substream);
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void (*shutdown)(void *substream);
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int32_t (*prepare)(void *substream);
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int32_t (*start)(void *substream);
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int32_t (*stop)(void *substream);
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/* 将音频PCM格式传入进行设置 */
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int32_t (*hw_params)(void *substream);
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/* 用于数据的读操作, 数据最后才给到substream->soc_substream->buf_addr */
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snd_pcm_sframes_t (*readi)(void *substream);
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/* 用于数据的写操作, 数据最后才给到substream->soc_substream->buf_addr */
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snd_pcm_sframes_t (*writei)(void *substream);
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uint32_t (*status_params)(void *substream,
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//enum SND_SOC_DSP_PARAMS_COMMAND
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enum SND_SOC_DSP_PCM_COMMAND cmd,
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void *params);
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};
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struct snd_dsp_hal_substream_driver {
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//int32_t (*probe)(struct snd_dsp_hal_substream *substream);
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int32_t (*probe)(void *substream);
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int32_t (*remove)(void *substream);
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int32_t (*suspend)(void *substream);
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int32_t (*resume)(void *substream);
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};
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struct msg_substream_package {
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wait_queue_head_t tsleep;
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spinlock_t lock;
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int32_t wakeup_flag;
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struct snd_soc_dsp_substream soc_substream;
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struct snd_pcm_substream *substream;
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};
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#endif
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