e5d08722f8
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6763 a1c6a512-1295-4272-9138-f99709370657
650 lines
16 KiB
C
650 lines
16 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 by Linus Nielsen Feltzing
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "debug.h"
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#include "panic.h"
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#include "thread.h"
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#include <kernel.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <string.h>
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#include "cpu.h"
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#include "i2c.h"
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#include "uda1380.h"
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#include "system.h"
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#include "usb.h"
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#include "buffer.h"
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#include "audio.h"
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#include "button.h"
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#include "file.h"
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#include "sprintf.h"
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#include "logf.h"
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#include "button.h"
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#include "lcd.h"
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#include "lcd-remote.h"
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#include "pcm_playback.h"
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#include "pcm_record.h"
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/***************************************************************************/
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static volatile bool is_recording; /* We are recording */
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static volatile bool is_stopping; /* Are we going to stop */
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static volatile bool is_paused; /* We have paused */
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static volatile int num_rec_bytes;
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static volatile int int_count; /* Number of DMA completed interrupts */
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static volatile int error_count; /* Number of DMA errors */
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static unsigned long record_start_time; /* Value of current_tick when recording was started */
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static unsigned long pause_start_time; /* Value of current_tick when pause was started */
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static int rec_gain, rec_volume;
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static bool show_waveform;
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static int init_done = 0;
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static int wav_file;
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static char recording_filename[MAX_PATH];
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/***************************************************************************/
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/*
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Some estimates:
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44100 HZ * 4 = 176400 bytes/s
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Refresh LCD 10 HZ = 176400 / 10 = 17640 bytes ~=~ 1024*16 bytes
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If NUM_BUFFERS is 80 we can hold ~8 sec of data in memory
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ALL_BUFFER_SIZE will be 1024*16 * 80 = 1310720 bytes
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*/
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#define NUM_BUFFERS 80
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#define EACH_BUFFER_SIZE (1024*16) /* Multiple of 4. Use small value to get responsive waveform */
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#define ALL_BUFFERS_SIZE (NUM_BUFFERS * EACH_BUFFER_SIZE)
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#define WRITE_THRESHOLD 40 /* Minimum number of buffers before write to file */
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static unsigned char *rec_buffers[NUM_BUFFERS];
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/*
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Overrun occures when DMA needs to write a new buffer and write_index == read_index
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Solution to this is to optimize pcmrec_callback, use cpu_boost somewhere or increase
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the total buffer size (or WRITE_THRESHOLD)
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*/
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static int write_index; /* Which buffer the DMA is currently recording */
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static int read_index; /* The oldest buffer that the pcmrec_callback has not read */
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/***************************************************************************/
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static struct event_queue pcmrec_queue;
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static long pcmrec_stack[(DEFAULT_STACK_SIZE + 0x1000)/sizeof(long)];
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static const char pcmrec_thread_name[] = "pcmrec";
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static void pcmrec_thread(void);
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/* Event IDs */
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#define PCMREC_OPEN 1 /* Enable recording */
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#define PCMREC_CLOSE 2 /* Disable recording */
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#define PCMREC_START 3 /* Start a new recording */
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#define PCMREC_STOP 4 /* Stop the current recording */
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#define PCMREC_PAUSE 10
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#define PCMREC_RESUME 11
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#define PCMREC_NEW_FILE 12
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#define PCMREC_SET_GAIN 13
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#define PCMREC_GOT_DATA 20 /* DMA1 notifies when data has arrived */
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/*******************************************************************/
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/* Functions that are not executing in the pcmrec_thread first */
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/*******************************************************************/
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void pcm_init_recording(void)
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{
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int_count = 0;
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error_count = 0;
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show_waveform = 0;
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is_recording = 0;
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is_stopping = 0;
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num_rec_bytes = 0;
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wav_file = -1;
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read_index = 0;
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write_index = 0;
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queue_init(&pcmrec_queue);
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create_thread(pcmrec_thread, pcmrec_stack, sizeof(pcmrec_stack), pcmrec_thread_name);
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}
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void pcm_open_recording(void)
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{
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init_done = 0;
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logf("pcm_open_rec");
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queue_post(&pcmrec_queue, PCMREC_OPEN, 0);
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while (init_done)
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{
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sleep(HZ >> 8);
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}
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logf("pcm_open_rec done");
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}
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void pcm_close_recording(void)
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{
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/* todo: synchronize completion with pcmrec thread */
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queue_post(&pcmrec_queue, PCMREC_CLOSE, 0);
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}
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unsigned long pcm_status(void)
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{
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unsigned long ret = 0;
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if (is_recording)
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ret |= AUDIO_STATUS_RECORD;
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return ret;
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}
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void pcm_new_file(const char *filename)
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{
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/* todo */
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filename = filename;
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}
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unsigned long pcm_recorded_time(void)
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{
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if (is_recording)
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{
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if(is_paused)
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return pause_start_time - record_start_time;
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else
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return current_tick - record_start_time;
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}
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return 0;
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}
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unsigned long pcm_num_recorded_bytes(void)
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{
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if (is_recording)
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{
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return num_rec_bytes;
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}
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else
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return 0;
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}
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void pcm_pause_recording(void)
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{
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/* todo */
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}
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void pcm_resume_recording(void)
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{
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/* todo */
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}
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/**
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* Sets the audio source
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*
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* Side effect: This functions starts feeding the CPU with audio data over the I2S bus
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*
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* @param source 0=line-in, 1=mic
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*/
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void pcm_set_recording_options(int source, bool enable_waveform)
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{
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uda1380_enable_recording(source);
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show_waveform = enable_waveform;
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}
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/**
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*
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* @param gain line-in and microphone gain (0-15)
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* @param volume ADC volume (0-255)
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*/
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void pcm_set_recording_gain(int gain, int volume)
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{
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rec_gain = gain;
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rec_volume = volume;
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queue_post(&pcmrec_queue, PCMREC_SET_GAIN, 0);
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}
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/**
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* Start recording
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*
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* Use pcm_set_recording_options before calling record
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*/
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void pcm_record(const char *filename)
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{
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strncpy(recording_filename, filename, MAX_PATH - 1);
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recording_filename[MAX_PATH - 1] = 0;
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queue_post(&pcmrec_queue, PCMREC_START, 0);
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}
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/**
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*
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*/
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void pcm_stop_recording(void)
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{
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if (is_recording)
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is_stopping = 1;
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queue_post(&pcmrec_queue, PCMREC_STOP, 0);
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logf("pcm_stop_recording");
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while (is_stopping)
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{
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sleep(HZ >> 4);
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}
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logf("pcm_stop_recording done");
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}
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/***************************************************************************/
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/* Functions that executes in the context of pcmrec_thread */
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/***************************************************************************/
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/**
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* Process the buffers using read_index and write_index.
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*
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* DMA1 handler posts to pcmrec_queue so that pcmrec_thread calls this
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* function. Also pcmrec_stop will call this function when the recording
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* is stopping, and that call will have flush = true.
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*
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*/
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void pcmrec_callback(bool flush) __attribute__ ((section (".icode")));
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void pcmrec_callback(bool flush)
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{
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int num_ready;
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num_ready = write_index - read_index;
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if (num_ready < 0)
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num_ready += NUM_BUFFERS;
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/* we can consume up to num_ready buffers */
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#ifdef HAVE_REMOTE_LCD
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/* Draw waveform on remote LCD */
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if (show_waveform && num_ready>0)
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{
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short *buf;
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long x,y,offset;
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int show_index;
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/* Just display the last buffer (most recent one) */
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show_index = read_index + num_ready - 1;
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buf = (short*)rec_buffers[show_index];
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lcd_remote_clear_display();
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offset = 0;
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for (x=0; x<LCD_REMOTE_WIDTH-1; x++)
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{
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y = buf[offset] * (LCD_REMOTE_HEIGHT / 2) *5; /* The 5 is just 'zooming' */
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y = y >> 15; /* Divide with SHRT_MAX */
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y += LCD_REMOTE_HEIGHT/2;
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if (y < 2) y=2;
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if (y >= LCD_REMOTE_HEIGHT-2) y = LCD_REMOTE_HEIGHT-2;
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REMOTE_DRAW_PIXEL(x,y);
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offset += (EACH_BUFFER_SIZE/2) / LCD_REMOTE_WIDTH;
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}
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lcd_remote_update();
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}
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#endif
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/* Note: This might be a good place to call the 'codec' later */
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/* Check that we have the minimum amount of data to save or */
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/* that if it's closing time which mean we have to save.. */
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if (wav_file != -1)
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{
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if (num_ready >= WRITE_THRESHOLD || flush)
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{
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unsigned long *ptr = (unsigned long*)rec_buffers[read_index];
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int i;
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for (i=0; i<EACH_BUFFER_SIZE * num_ready / 4; i++)
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{
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*ptr = SWAB32(*ptr);
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ptr++;
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}
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write(wav_file, rec_buffers[read_index], EACH_BUFFER_SIZE * num_ready);
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read_index+=num_ready;
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if (read_index >= NUM_BUFFERS)
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read_index -= NUM_BUFFERS;
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}
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} else
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{
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/* In this case we must consume the buffers otherwise we will */
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/* get 'dma1 overrun' pretty fast */
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read_index+=num_ready;
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if (read_index >= NUM_BUFFERS)
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read_index -= NUM_BUFFERS;
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}
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}
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void pcmrec_dma_start(void)
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{
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DAR1 = (unsigned long)rec_buffers[write_index++]; /* Destination address */
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SAR1 = (unsigned long)&PDIR2; /* Source address */
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BCR1 = EACH_BUFFER_SIZE; /* Bytes to transfer */
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/* Start the DMA transfer.. */
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DCR1 = DMA_INT | DMA_EEXT | DMA_CS | DMA_DINC | DMA_START;
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logf("dma1 started");
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}
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/* DMA1 Interrupt is called when the DMA has finished transfering a chunk */
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void DMA1(void) __attribute__ ((interrupt_handler, section(".icode")));
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void DMA1(void)
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{
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int res = DSR1;
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DSR1 = 1; /* Clear interrupt */
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int_count++;
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if (res & 0x70)
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{
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DCR1 = 0; /* Stop DMA transfer */
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error_count++;
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is_recording = 0;
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logf("dma1 err 0x%x", res);
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} else
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{
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num_rec_bytes += EACH_BUFFER_SIZE;
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write_index++;
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if (write_index >= NUM_BUFFERS)
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write_index = 0;
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if (is_stopping || !is_recording)
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{
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DCR1 = 0; /* Stop DMA transfer */
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is_recording = 0;
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logf("dma1 stopping");
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} else if (write_index == read_index)
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{
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DCR1 = 0; /* Stop DMA transfer */
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is_recording = 0;
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logf("dma1 overrun");
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} else
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{
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DAR1 = (unsigned long)rec_buffers[write_index]; /* Destination address */
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BCR1 = EACH_BUFFER_SIZE;
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queue_post(&pcmrec_queue, PCMREC_GOT_DATA, NULL);
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}
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}
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IPR |= (1<<15); /* Clear pending interrupt request */
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}
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static int start_wave(void)
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{
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unsigned char header[44] =
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{
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'R','I','F','F',0,0,0,0,'W','A','V','E','f','m','t',' ',
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0x10,0,0,0,1,0,2,0,0x44,0xac,0,0,0x10,0xb1,2,0,
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4,0,0x10,0,'d','a','t','a',0,0,0,0
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};
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wav_file = open(recording_filename, O_RDWR|O_CREAT|O_TRUNC);
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if (wav_file < 0)
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{
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wav_file = -1;
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logf("create failed: %d", wav_file);
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return -1;
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}
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if (sizeof(header) != write(wav_file, header, sizeof(header)))
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{
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close(wav_file);
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wav_file = -1;
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logf("write failed");
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return -2;
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}
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return 0;
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}
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/* Update header and set correct length values */
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static void close_wave(void)
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{
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long l;
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l = SWAB32(num_rec_bytes + 36);
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lseek(wav_file, 4, SEEK_SET);
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write(wav_file, &l, 4);
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l = SWAB32(num_rec_bytes);
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lseek(wav_file, 40, SEEK_SET);
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write(wav_file, &l, 4);
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close(wav_file);
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wav_file = -1;
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}
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static void pcmrec_start(void)
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{
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logf("pcmrec_start");
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if (is_recording)
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return;
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if (wav_file != -1)
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close(wav_file);
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logf("rec: %s", recording_filename);
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start_wave(); /* todo: send signal to pcm_record if we have failed */
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num_rec_bytes = 0;
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/* Store the current time */
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record_start_time = current_tick;
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write_index = 0;
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read_index = 0;
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is_stopping = 0;
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is_paused = 0;
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is_recording = 1;
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pcmrec_dma_start();
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}
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static void pcmrec_stop(void)
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{
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/* wait for recording to finish */
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/* todo: Abort current DMA transfer using DCR1.. */
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logf("pcmrec_stop");
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while (is_recording)
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{
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sleep(HZ >> 4);
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}
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logf("pcmrec_stop done");
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/* Write unfinished buffers to file */
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pcmrec_callback(true);
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close_wave();
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is_stopping = 0;
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}
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static void pcmrec_open(void)
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{
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unsigned long buffer_start;
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int i;
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show_waveform = 0;
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is_recording = 0;
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is_stopping = 0;
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num_rec_bytes = 0;
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wav_file = -1;
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read_index = 0;
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write_index = 0;
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buffer_start = (unsigned long)(&audiobuf[(audiobufend - audiobuf) - (ALL_BUFFERS_SIZE + 16)]);
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buffer_start &= ~3;
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for (i=0; i<NUM_BUFFERS; i++)
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{
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rec_buffers[i] = (unsigned char*)(buffer_start + EACH_BUFFER_SIZE * i);
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}
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IIS1CONFIG = 0x800; /* Stop any playback */
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AUDIOGLOB |= 0x180; /* IIS1 fifo auto sync = on, PDIR2 auto sync = on */
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DATAINCONTROL = 0xc000; /* Generate Interrupt when 6 samples in fifo */
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DATAINCONTROL |= 0x20; /* PDIR2 source = IIS1recv */
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DIVR1 = 55; /* DMA1 is mapped into vector 55 in system.c */
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DMACONFIG = 1; /* DMA0Req = PDOR3, DMA1Req = PDIR2 */
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DMAROUTE = (DMAROUTE & 0xffff00ff) | DMA1_REQ_AUDIO_2;
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ICR4 = (ICR4 & 0xffffff00) | 0x0000001c; /* Enable interrupt at level 7, priority 0 */
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IMR &= ~(1<<15); /* bit 15 is DMA1 */
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init_done = 1;
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}
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static void pcmrec_close(void)
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{
|
|
uda1380_disable_recording();
|
|
|
|
DMAROUTE = (DMAROUTE & 0xffff00ff);
|
|
ICR4 = (ICR4 & 0xffffff00); /* Disable interrupt */
|
|
IMR |= (1<<15); /* bit 15 is DMA1 */
|
|
|
|
}
|
|
|
|
static void pcmrec_thread(void)
|
|
{
|
|
struct event ev;
|
|
|
|
logf("thread pcmrec start");
|
|
|
|
while (1)
|
|
{
|
|
queue_wait(&pcmrec_queue, &ev);
|
|
|
|
switch (ev.id)
|
|
{
|
|
case PCMREC_OPEN:
|
|
pcmrec_open();
|
|
break;
|
|
|
|
case PCMREC_CLOSE:
|
|
pcmrec_close();
|
|
break;
|
|
|
|
case PCMREC_START:
|
|
pcmrec_start();
|
|
break;
|
|
|
|
case PCMREC_STOP:
|
|
pcmrec_stop();
|
|
break;
|
|
|
|
case PCMREC_PAUSE:
|
|
/* todo */
|
|
break;
|
|
|
|
case PCMREC_RESUME:
|
|
/* todo */
|
|
break;
|
|
|
|
case PCMREC_NEW_FILE:
|
|
/* todo */
|
|
break;
|
|
|
|
case PCMREC_SET_GAIN:
|
|
uda1380_set_recvol(rec_gain, rec_gain, rec_volume);
|
|
break;
|
|
|
|
case PCMREC_GOT_DATA:
|
|
pcmrec_callback(false);
|
|
break;
|
|
|
|
case SYS_USB_CONNECTED:
|
|
if (!is_recording && !is_stopping)
|
|
{
|
|
usb_acknowledge(SYS_USB_CONNECTED_ACK);
|
|
usb_wait_for_disconnect(&pcmrec_queue);
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
logf("thread pcmrec done");
|
|
}
|
|
|
|
|