538 lines
15 KiB
C
538 lines
15 KiB
C
/*
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* File : audio.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2017-05-09 Urey first version
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*/
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#include <stdio.h>
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#include <rthw.h>
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <drivers/audio.h>
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#define AUDIO_DEBUG 0
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#if AUDIO_DEBUG
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#define AUDIO_DBG(...) printf("[AUDIO]:"),printf(__VA_ARGS__)
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#else
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#define AUDIO_DBG(...)
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#endif
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static rt_err_t _audio_send_replay_frame(struct rt_audio_device *audio)
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{
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rt_err_t result = RT_EOK;
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rt_base_t level;
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struct rt_audio_frame frame;
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RT_ASSERT(audio != RT_NULL);
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//check repaly queue is empty
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if (rt_data_queue_peak(&audio->replay->queue, &frame.data_ptr, &frame.data_size) != RT_EOK)
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{
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AUDIO_DBG("TX queue is empty\n");
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result = -RT_EEMPTY;
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level = rt_hw_interrupt_disable();
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audio->replay->activated = RT_FALSE;
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rt_hw_interrupt_enable(level);
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goto _exit;
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}
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if (audio->ops->transmit != RT_NULL)
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{
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AUDIO_DBG("audio transmit...\n");
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if (audio->ops->transmit(audio, frame.data_ptr, RT_NULL, frame.data_size) != frame.data_size)
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{
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result = -RT_EBUSY;
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goto _exit;
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}
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}
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//pop the head frame...
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rt_data_queue_pop(&audio->replay->queue, &frame.data_ptr, &frame.data_size, RT_WAITING_FOREVER);
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_exit: return result;
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}
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static rt_err_t _audio_flush_replay_frame(struct rt_audio_device *audio)
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{
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struct rt_audio_frame frame;
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if (audio->replay == RT_NULL)
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return -RT_EIO;
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while (rt_data_queue_peak(&audio->replay->queue, &frame.data_ptr, &frame.data_size) == RT_EOK)
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{
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//pop the head frame...
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rt_data_queue_pop(&audio->replay->queue, &frame.data_ptr, &frame.data_size, RT_WAITING_FOREVER);
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/* notify transmitted complete. */
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if (audio->parent.tx_complete != RT_NULL)
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audio->parent.tx_complete(&audio->parent, (void *) frame.data_ptr);
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}
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return RT_EOK;
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}
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static rt_err_t _audio_dev_init(struct rt_device *dev)
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{
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rt_err_t result = RT_EOK;
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struct rt_audio_device *audio;
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RT_ASSERT(dev != RT_NULL);
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audio = (struct rt_audio_device *) dev;
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/* initialize replay & record */
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audio->replay = RT_NULL;
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audio->record = RT_NULL;
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/* apply configuration */
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if (audio->ops->init)
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result = audio->ops->init(audio);
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return result;
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}
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static rt_err_t _audio_dev_open(struct rt_device *dev, rt_uint16_t oflag)
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{
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rt_err_t result = RT_EOK;
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rt_base_t level;
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struct rt_audio_device *audio;
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RT_ASSERT(dev != RT_NULL);
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audio = (struct rt_audio_device *) dev;
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/* check device flag with the open flag */
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if ((oflag & RT_DEVICE_OFLAG_RDONLY) && !(dev->flag & RT_DEVICE_FLAG_RDONLY))
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return -RT_EIO;
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if ((oflag & RT_DEVICE_OFLAG_WRONLY) && !(dev->flag & RT_DEVICE_FLAG_WRONLY))
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return -RT_EIO;
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/* get open flags */
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dev->open_flag = oflag & 0xff;
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/* initialize the Rx/Tx structure according to open flag */
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if (oflag & RT_DEVICE_OFLAG_WRONLY)
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{
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AUDIO_DBG("open audio device ,oflag = %x\n",oflag);
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if (audio->replay == RT_NULL)
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{
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struct rt_audio_replay *replay = (struct rt_audio_replay *) rt_malloc(sizeof(struct rt_audio_replay));
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if (replay == RT_NULL)
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{
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AUDIO_DBG("request memory for replay error\n");
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return -RT_ENOMEM;
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}
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//init queue for audio replay
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rt_data_queue_init(&replay->queue, CFG_AUDIO_REPLAY_QUEUE_COUNT, CFG_AUDIO_REPLAY_QUEUE_COUNT / 2, RT_NULL);
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replay->activated = RT_FALSE;
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audio->replay = replay;
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}
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dev->open_flag |= RT_DEVICE_OFLAG_WRONLY;
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}
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if (oflag & RT_DEVICE_OFLAG_RDONLY)
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{
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if (audio->record == RT_NULL)
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{
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struct rt_audio_record *record = (struct rt_audio_record *) rt_malloc(sizeof(struct rt_audio_record));
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if (record == RT_NULL)
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{
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AUDIO_DBG("request memory for record error\n");
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return -RT_ENOMEM;
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}
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//init pipe for record
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{
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rt_size_t size = CFG_AUDIO_RECORD_PIPE_SIZE;
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rt_uint8_t *buf = rt_malloc(CFG_AUDIO_RECORD_PIPE_SIZE);
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if (buf == RT_NULL)
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{
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rt_free(record);
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AUDIO_DBG("request pipe memory error\n");
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return -RT_ENOMEM;
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}
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rt_pipe_init(&record->pipe, "recpipe", RT_PIPE_FLAG_FORCE_WR | RT_PIPE_FLAG_BLOCK_RD, buf,
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CFG_AUDIO_RECORD_PIPE_SIZE);
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}
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record->activated = RT_FALSE;
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audio->record = record;
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}
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//open record pipe
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if (audio->record != RT_NULL)
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{
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rt_device_open(RT_DEVICE(&audio->record->pipe), RT_DEVICE_OFLAG_RDONLY);
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}
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dev->open_flag |= RT_DEVICE_OFLAG_RDONLY;
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}
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return RT_EOK;
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}
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static rt_err_t _audio_dev_close(struct rt_device *dev)
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{
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struct rt_audio_device *audio;
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RT_ASSERT(dev != RT_NULL);
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audio = (struct rt_audio_device *) dev;
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//shutdown the lower device
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if (audio->ops->shutdown != RT_NULL)
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audio->ops->shutdown(audio);
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if (dev->open_flag & RT_DEVICE_OFLAG_WRONLY)
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{
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struct rt_audio_frame frame;
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//stop replay stream
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audio->ops->stop(audio, AUDIO_STREAM_REPLAY);
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//flush all frame
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while (rt_data_queue_peak(&audio->replay->queue, &frame.data_ptr, &frame.data_size) == RT_EOK)
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{
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//pop the head frame...
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rt_data_queue_pop(&audio->replay->queue, &frame.data_ptr, &frame.data_size, RT_WAITING_FOREVER);
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/* notify transmitted complete. */
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if (audio->parent.tx_complete != RT_NULL)
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audio->parent.tx_complete(&audio->parent, (void *) frame.data_ptr);
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}
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dev->open_flag &= ~RT_DEVICE_OFLAG_WRONLY;
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}
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if (dev->open_flag & RT_DEVICE_OFLAG_RDONLY)
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{
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//stop record stream
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audio->ops->stop(audio, AUDIO_STREAM_RECORD);
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//close record pipe
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if (audio->record != RT_NULL)
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rt_device_close(RT_DEVICE(&audio->record->pipe));
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dev->open_flag &= ~RT_DEVICE_OFLAG_RDONLY;
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}
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return RT_EOK;
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}
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static rt_size_t _audio_dev_read(struct rt_device *dev, rt_off_t pos, void *buffer, rt_size_t size)
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{
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struct rt_audio_device *audio;
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RT_ASSERT(dev != RT_NULL);
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audio = (struct rt_audio_device *) dev;
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if (!(dev->open_flag & RT_DEVICE_OFLAG_RDONLY) || (audio->record == RT_NULL))
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return 0;
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return rt_device_read(RT_DEVICE(&audio->record->pipe), pos, buffer, size);
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}
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static rt_size_t _audio_dev_write(struct rt_device *dev, rt_off_t pos, const void *buffer, rt_size_t size)
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{
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rt_err_t result = RT_EOK;
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rt_base_t level;
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struct rt_audio_device *audio;
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RT_ASSERT(dev != RT_NULL);
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audio = (struct rt_audio_device *) dev;
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if (!(dev->open_flag & RT_DEVICE_OFLAG_WRONLY) || (audio->replay == RT_NULL))
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return 0;
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AUDIO_DBG("audio write : pos = %d,buffer = %x,size = %d\n",pos,(rt_uint32_t)buffer,size);
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//push a new frame to tx queue
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{
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result = rt_data_queue_push(&audio->replay->queue, buffer, size,
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RT_WAITING_FOREVER);
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if (result != RT_EOK)
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{
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AUDIO_DBG("TX frame queue push error\n");
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rt_set_errno(-RT_EFULL);
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return 0;
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}
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}
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//check tx state...
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level = rt_hw_interrupt_disable();
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if (audio->replay->activated != RT_TRUE)
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{
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audio->replay->activated = RT_TRUE;
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rt_hw_interrupt_enable(level);
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_audio_send_replay_frame(audio);
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}
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return size;
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}
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static rt_err_t _audio_dev_control(struct rt_device *dev, int cmd, void *args)
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{
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rt_err_t result = RT_EOK;
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struct rt_audio_device *audio;
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RT_ASSERT(dev != RT_NULL);
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audio = (struct rt_audio_device *) dev;
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//dev stat...
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switch (cmd)
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{
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case AUDIO_CTL_GETCAPS:
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{
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struct rt_audio_caps *caps = (struct rt_audio_caps *) args;
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AUDIO_DBG("AUDIO_CTL_GETCAPS: main_type = %d,sub_type = %d\n",caps->main_type,caps->sub_type);
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if (audio->ops->getcaps != RT_NULL)
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{
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result = audio->ops->getcaps(audio, caps);
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}
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}
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break;
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case AUDIO_CTL_CONFIGURE:
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{
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struct rt_audio_caps *caps = (struct rt_audio_caps *) args;
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AUDIO_DBG("AUDIO_CTL_CONFIGURE: main_type = %d,sub_type = %d\n",caps->main_type,caps->sub_type);
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if (audio->ops->configure != RT_NULL)
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{
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result = audio->ops->configure(audio, caps);
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}
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}
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break;
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case AUDIO_CTL_SHUTDOWN:
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{
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AUDIO_DBG("AUDIO_CTL_SHUTDOWN\n");
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if (audio->ops->shutdown != RT_NULL)
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result = audio->ops->shutdown(audio);
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//flush replay frame...
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_audio_flush_replay_frame(audio);
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}
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break;
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case AUDIO_CTL_START:
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{
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int stream = *(int *) args;
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AUDIO_DBG("AUDIO_CTL_START: stream = %d\n",stream);
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if (audio->ops->start != RT_NULL)
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result = audio->ops->start(audio, stream);
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}
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break;
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case AUDIO_CTL_STOP:
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{
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int stream = *(int *) args;
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AUDIO_DBG("AUDIO_CTL_STOP: stream = %d\n",stream);
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if (audio->ops->start != RT_NULL)
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result = audio->ops->stop(audio, stream);
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if (stream == AUDIO_STREAM_REPLAY)
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{
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_audio_flush_replay_frame(audio);
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}
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}
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break;
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case AUDIO_CTL_PAUSE:
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{
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int stream = *(int *) args;
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AUDIO_DBG("AUDIO_CTL_PAUSE: stream = %d\n",stream);
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if (audio->ops->start != RT_NULL)
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result = audio->ops->suspend(audio, stream);
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}
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break;
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case AUDIO_CTL_RESUME:
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{
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int stream = *(int *) args;
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AUDIO_DBG("AUDIO_CTL_RESUME: stream = %d\n",stream);
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if (audio->ops->start != RT_NULL)
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result = audio->ops->resume(audio, stream);
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//resume tx frame...
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if (stream == AUDIO_STREAM_REPLAY)
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_audio_send_replay_frame(audio);
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}
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break;
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case AUDIO_CTL_ALLOCBUFFER:
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{
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struct rt_audio_buf_desc *desc = (struct rt_audio_buf_desc *) args;
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if (desc)
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{
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desc->data_size = AUDIO_DEVICE_DECODE_MP_BLOCK_SZ * 2;
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desc->data_ptr = rt_mp_alloc(&audio->mp, RT_WAITING_FOREVER);
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result = RT_EOK;
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}
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else result = -RT_EIO;
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}
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break;
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case AUDIO_CTL_FREEBUFFER:
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{
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rt_uint8_t *data_ptr = (rt_uint8_t *) args;
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if (data_ptr)
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rt_mp_free(data_ptr);
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}
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break;
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default:
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result = audio->ops->control(audio, cmd, args);
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break;
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}
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return result;
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}
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rt_err_t rt_audio_register(struct rt_audio_device *audio, const char *name, rt_uint32_t flag, void *data)
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{
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struct rt_device *device;
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RT_ASSERT(audio != RT_NULL);
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device = &(audio->parent);
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device->type = RT_Device_Class_Sound;
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device->rx_indicate = RT_NULL;
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device->tx_complete = RT_NULL;
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device->init = _audio_dev_init;
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device->open = _audio_dev_open;
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device->close = _audio_dev_close;
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device->read = _audio_dev_read;
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device->write = _audio_dev_write;
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device->control = _audio_dev_control;
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device->user_data = data;
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//init memory pool for replay
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{
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rt_uint8_t *mempool = rt_malloc(AUDIO_DEVICE_DECODE_MP_SZ);
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rt_mp_init(&audio->mp, "adu_mp", mempool, AUDIO_DEVICE_DECODE_MP_SZ,
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AUDIO_DEVICE_DECODE_MP_BLOCK_SZ * 2);
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}
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/* register a character device */
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return rt_device_register(device, name, flag | RT_DEVICE_FLAG_REMOVABLE);
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}
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int rt_audio_samplerate_to_speed(rt_uint32_t bitValue)
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{
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int speed = 0;
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switch (bitValue)
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{
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case AUDIO_SAMP_RATE_8K:
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speed = 8000;
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break;
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case AUDIO_SAMP_RATE_11K:
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speed = 11052;
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break;
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case AUDIO_SAMP_RATE_16K:
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speed = 16000;
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break;
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case AUDIO_SAMP_RATE_22K:
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speed = 22050;
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break;
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case AUDIO_SAMP_RATE_32K:
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speed = 32000;
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break;
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case AUDIO_SAMP_RATE_44K:
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speed = 44100;
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break;
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case AUDIO_SAMP_RATE_48K:
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speed = 48000;
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break;
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case AUDIO_SAMP_RATE_96K:
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speed = 96000;
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break;
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case AUDIO_SAMP_RATE_128K:
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speed = 128000;
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break;
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case AUDIO_SAMP_RATE_160K:
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speed = 160000;
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break;
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case AUDIO_SAMP_RATE_172K:
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speed = 176400;
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break;
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case AUDIO_SAMP_RATE_192K:
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speed = 192000;
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break;
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default:
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break;
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}
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return speed;
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}
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rt_uint32_t rt_audio_format_to_bits(rt_uint32_t format)
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{
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switch (format)
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{
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case AUDIO_FMT_PCM_U8:
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case AUDIO_FMT_PCM_S8:
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return 8;
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case AUDIO_FMT_PCM_S16_LE:
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case AUDIO_FMT_PCM_S16_BE:
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case AUDIO_FMT_PCM_U16_LE:
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case AUDIO_FMT_PCM_U16_BE:
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return 16;
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default:
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return 32;
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};
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}
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void rt_audio_tx_complete(struct rt_audio_device *audio, rt_uint8_t *pbuf)
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{
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rt_err_t result;
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AUDIO_DBG("audio tx complete ptr=%x...\n",(rt_uint32_t)pbuf);
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//try to send all frame
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do
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{
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result = _audio_send_replay_frame(audio);
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} while (result == RT_EOK);
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/* notify transmitted complete. */
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if (audio->parent.tx_complete != RT_NULL)
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audio->parent.tx_complete(&audio->parent, (void *) pbuf);
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}
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void rt_audio_rx_done(struct rt_audio_device *audio, rt_uint8_t *pbuf, rt_size_t len)
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{
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rt_err_t result = RT_EOK;
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|
|
//save data to record pipe
|
|
rt_device_write(RT_DEVICE(RT_DEVICE(&audio->record->pipe)), 0, pbuf, len);
|
|
|
|
/* invoke callback */
|
|
if (audio->parent.rx_indicate != RT_NULL)
|
|
audio->parent.rx_indicate(&audio->parent, len);
|
|
}
|
|
|