ab1861a3c2
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11577 a1c6a512-1295-4272-9138-f99709370657
1620 lines
47 KiB
C
1620 lines
47 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 "system.h"
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#include "kernel.h"
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#include "logf.h"
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#include "panic.h"
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#include "thread.h"
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#include <string.h>
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#include "ata.h"
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#include "usb.h"
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#if defined(HAVE_UDA1380)
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#include "uda1380.h"
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#include "general.h"
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#elif defined(HAVE_TLV320)
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#include "tlv320.h"
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#endif
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#include "buffer.h"
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#include "audio.h"
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#include "sound.h"
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#include "id3.h"
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#ifdef HAVE_SPDIF_IN
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#include "spdif.h"
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#endif
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/***************************************************************************/
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/**
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* APIs implemented in the target tree portion:
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* Public -
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* pcm_init_recording
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* pcm_close_recording
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* pcm_rec_mux
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* Semi-private -
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* pcm_rec_dma_start
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* pcm_rec_dma_stop
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*/
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/** These items may be implemented target specifically or need to
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be shared semi-privately **/
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/* the registered callback function for when more data is available */
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volatile pcm_more_callback_type pcm_callback_more_ready = NULL;
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/* DMA transfer in is currently active */
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volatile bool pcm_recording = false;
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/* APIs implemented in the target-specific portion */
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void pcm_rec_dma_start(const void *addr, size_t size);
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void pcm_rec_dma_stop(void);
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/** General recording state **/
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static bool is_recording; /* We are recording */
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static bool is_paused; /* We have paused */
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static bool is_stopping; /* We are currently stopping */
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static bool is_error; /* An error has occured */
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/** Stats on encoded data for current file **/
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static size_t num_rec_bytes; /* Num bytes recorded */
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static unsigned long num_rec_samples; /* Number of PCM samples recorded */
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/** Stats on encoded data for all files from start to stop **/
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static unsigned long long accum_rec_bytes; /* total size written to chunks */
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static unsigned long long accum_pcm_samples; /* total pcm count processed */
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/* Keeps data about current file and is sent as event data for codec */
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static struct enc_file_event_data rec_fdata IDATA_ATTR =
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{
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.chunk = NULL,
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.new_enc_size = 0,
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.new_num_pcm = 0,
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.rec_file = -1,
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.num_pcm_samples = 0
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};
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/** These apply to current settings **/
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static int rec_source; /* current rec_source setting */
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static int rec_frequency; /* current frequency setting */
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static unsigned long sample_rate; /* Sample rate in HZ */
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static int num_channels; /* Current number of channels */
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static struct encoder_config enc_config; /* Current encoder configuration */
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/****************************************************************************
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use 2 circular buffers:
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pcm_buffer=DMA output buffer: chunks (8192 Bytes) of raw pcm audio data
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enc_buffer=encoded audio buffer: storage for encoder output data
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Flow:
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1. when entering recording_screen DMA feeds the ringbuffer pcm_buffer
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2. if enough pcm data are available the encoder codec does encoding of pcm
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chunks (4-8192 Bytes) into ringbuffer enc_buffer in codec_thread
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3. pcmrec_callback detects enc_buffer 'near full' and writes data to disk
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Functions calls (basic encoder steps):
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1.main: audio_load_encoder(); start the encoder
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2.encoder: enc_get_inputs(); get encoder recording settings
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3.encoder: enc_set_parameters(); set the encoder parameters
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4.encoder: enc_get_pcm_data(); get n bytes of unprocessed pcm data
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5.encoder: enc_pcm_buf_near_empty(); if 1: reduce cpu_boost
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6.encoder: enc_alloc_chunk(); get a ptr to next enc chunk
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7.encoder: <process enc chunk> compress and store data to enc chunk
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8.encoder: enc_free_chunk(); inform main about chunk process finished
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9.encoder: repeat 4. to 8.
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A.pcmrec: enc_events_callback(); called for certain events
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****************************************************************************/
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/** buffer parameters where incoming PCM data is placed **/
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#define PCM_NUM_CHUNKS 256 /* Power of 2 */
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#define PCM_CHUNK_SIZE 8192 /* Power of 2 */
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#define PCM_CHUNK_MASK (PCM_NUM_CHUNKS*PCM_CHUNK_SIZE - 1)
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#define GET_PCM_CHUNK(offset) ((long *)(pcm_buffer + (offset)))
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#define GET_ENC_CHUNK(index) ENC_CHUNK_HDR(enc_buffer + enc_chunk_size*(index))
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#define INC_ENC_INDEX(index) \
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{ if (++index >= enc_num_chunks) index = 0; }
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#define DEC_ENC_INDEX(index) \
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{ if (--index < 0) index = enc_num_chunks - 1; }
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static size_t rec_buffer_size; /* size of available buffer */
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static unsigned char *pcm_buffer; /* circular recording buffer */
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static unsigned char *enc_buffer; /* circular encoding buffer */
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static volatile int dma_wr_pos; /* current DMA write pos */
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static int pcm_rd_pos; /* current PCM read pos */
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static volatile bool dma_lock; /* lock DMA write position */
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static unsigned long pre_record_ticks;/* pre-record time in ticks */
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static int enc_wr_index; /* encoder chunk write index */
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static int enc_rd_index; /* encoder chunk read index */
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static int enc_num_chunks; /* number of chunks in ringbuffer */
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static size_t enc_chunk_size; /* maximum encoder chunk size */
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static size_t enc_data_size; /* maximum data size for encoder */
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static unsigned long enc_sample_rate; /* sample rate used by encoder */
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static bool wav_queue_empty; /* all wav chunks processed? */
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/** file flushing **/
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static int write_threshold; /* max chunk limit for data flush */
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static int panic_threshold; /* boost thread prio when here */
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static int spinup_time = -1;/* last ata_spinup_time */
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/** encoder events **/
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static void (*enc_events_callback)(enum enc_events event, void *data);
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/** Path queue for files to write **/
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#define FNQ_MIN_NUM_PATHS 16 /* minimum number of paths to hold */
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static unsigned char *fn_queue; /* pointer to first filename */
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static ssize_t fnq_size; /* capacity of queue in bytes */
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static int fnq_rd_pos; /* current read position */
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static int fnq_wr_pos; /* current write position */
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/***************************************************************************/
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static struct event_queue pcmrec_queue;
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static long pcmrec_stack[3*DEFAULT_STACK_SIZE/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 values which are also single-bit flags */
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#define PCMREC_INIT 0x00000001 /* enable recording */
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#define PCMREC_CLOSE 0x00000002
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#define PCMREC_START 0x00000004 /* start recording (when stopped) */
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#define PCMREC_STOP 0x00000008 /* stop the current recording */
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#define PCMREC_PAUSE 0x00000010 /* pause the current recording */
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#define PCMREC_RESUME 0x00000020 /* resume the current recording */
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#define PCMREC_NEW_FILE 0x00000040 /* start new file (when recording) */
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#define PCMREC_SET_GAIN 0x00000080
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#define PCMREC_FLUSH_NUM 0x00000100 /* flush a number of files out */
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#define PCMREC_FINISH_STOP 0x00000200 /* finish the stopping recording */
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/* mask for signaling events */
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static volatile long pcm_thread_event_mask;
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static void pcm_thread_sync_post(long event, void *data)
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{
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pcm_thread_event_mask &= ~event;
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queue_post(&pcmrec_queue, event, data);
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while(!(event & pcm_thread_event_mask))
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yield();
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} /* pcm_thread_sync_post */
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static inline void pcm_thread_signal_event(long event)
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{
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pcm_thread_event_mask |= event;
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} /* pcm_thread_signal_event */
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static inline void pcm_thread_unsignal_event(long event)
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{
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pcm_thread_event_mask &= ~event;
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} /* pcm_thread_unsignal_event */
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static inline bool pcm_thread_event_state(long signaled, long unsignaled)
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{
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return ((signaled | unsignaled) & pcm_thread_event_mask) == signaled;
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} /* pcm_thread_event_state */
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static void pcm_thread_wait_for_stop(void)
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{
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if (is_stopping)
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{
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logf("waiting for stop to finish");
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while (is_stopping)
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yield();
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}
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} /* pcm_thread_wait_for_stop */
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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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/* Callback for when more data is ready */
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static void pcm_rec_have_more(unsigned char **data, size_t *size)
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{
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if (*size != 0)
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{
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/* some error condition */
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if (*size == DMA_REC_ERROR_DMA)
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{
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/* Flush recorded data to disk and stop recording */
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queue_post(&pcmrec_queue, PCMREC_STOP, NULL);
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return;
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}
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/* else try again next transmission */
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}
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else if (!dma_lock)
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{
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/* advance write position */
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dma_wr_pos = (dma_wr_pos + PCM_CHUNK_SIZE) & PCM_CHUNK_MASK;
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}
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*data = (unsigned char *)GET_PCM_CHUNK(dma_wr_pos);
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*size = PCM_CHUNK_SIZE;
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} /* pcm_rec_have_more */
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/** pcm_rec_* group **/
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void pcm_rec_error_clear(void)
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{
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is_error = false;
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} /* pcm_rec_error_clear */
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unsigned long pcm_rec_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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if (is_paused)
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ret |= AUDIO_STATUS_PAUSE;
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if (is_error)
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ret |= AUDIO_STATUS_ERROR;
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if (!is_recording && pre_record_ticks &&
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pcm_thread_event_state(PCMREC_INIT, PCMREC_CLOSE))
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ret |= AUDIO_STATUS_PRERECORD;
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return ret;
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} /* pcm_rec_status */
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int pcm_rec_current_bitrate(void)
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{
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if (accum_pcm_samples == 0)
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return 0;
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return (int)(8*accum_rec_bytes*enc_sample_rate / (1000*accum_pcm_samples));
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} /* pcm_rec_current_bitrate */
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int pcm_rec_encoder_afmt(void)
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{
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return enc_config.afmt;
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} /* pcm_rec_encoder_afmt */
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int pcm_rec_rec_format(void)
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{
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return afmt_rec_format[enc_config.afmt];
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} /* pcm_rec_rec_format */
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unsigned long pcm_rec_sample_rate(void)
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{
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/* Which is better ?? */
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#if 0
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return enc_sample_rate;
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#endif
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return sample_rate;
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} /* audio_get_sample_rate */
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/**
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* Creates pcmrec_thread
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*/
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void pcm_rec_init(void)
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{
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queue_init(&pcmrec_queue, true);
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create_thread(pcmrec_thread, pcmrec_stack, sizeof(pcmrec_stack),
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pcmrec_thread_name, PRIORITY_RECORDING);
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} /* pcm_rec_init */
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/** audio_* group **/
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void audio_init_recording(unsigned int buffer_offset)
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{
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(void)buffer_offset;
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pcm_thread_wait_for_stop();
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pcm_thread_sync_post(PCMREC_INIT, NULL);
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} /* audio_init_recording */
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void audio_close_recording(void)
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{
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pcm_thread_wait_for_stop();
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pcm_thread_sync_post(PCMREC_CLOSE, NULL);
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/* reset pcm to defaults (playback only) */
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pcm_set_frequency(HW_SAMPR_DEFAULT);
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audio_set_output_source(AUDIO_SRC_PLAYBACK);
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pcm_apply_settings(true);
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audio_remove_encoder();
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} /* audio_close_recording */
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unsigned long audio_recorded_time(void)
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{
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if (!is_recording || enc_sample_rate == 0)
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return 0;
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/* return actual recorded time a la encoded data even if encoder rate
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doesn't match the pcm rate */
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return (long)(HZ*(unsigned long long)num_rec_samples / enc_sample_rate);
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} /* audio_recorded_time */
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unsigned long audio_num_recorded_bytes(void)
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{
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if (!is_recording)
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return 0;
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return num_rec_bytes;
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} /* audio_num_recorded_bytes */
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#ifdef HAVE_SPDIF_IN
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/**
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* Return SPDIF sample rate index in audio_master_sampr_list. Since we base
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* our reading on the actual SPDIF sample rate (which might be a bit
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* inaccurate), we round off to the closest sample rate that is supported by
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* SPDIF.
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*/
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int audio_get_spdif_sample_rate(void)
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{
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unsigned long measured_rate = spdif_measure_frequency();
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/* Find which SPDIF sample rate we're closest to. */
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return round_value_to_list32(measured_rate, audio_master_sampr_list,
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SAMPR_NUM_FREQ, false);
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} /* audio_get_spdif_sample_rate */
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#endif /* HAVE_SPDIF_IN */
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/**
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* Sets recording parameters
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*/
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void audio_set_recording_options(struct audio_recording_options *options)
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{
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pcm_thread_wait_for_stop();
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/* stop DMA transfer */
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dma_lock = true;
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pcm_stop_recording();
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rec_frequency = options->rec_frequency;
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rec_source = options->rec_source;
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num_channels = options->rec_channels == 1 ? 1 : 2;
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pre_record_ticks = options->rec_prerecord_time * HZ;
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enc_config = options->enc_config;
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enc_config.afmt = rec_format_afmt[enc_config.rec_format];
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#ifdef HAVE_SPDIF_IN
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if (rec_source == AUDIO_SRC_SPDIF)
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{
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/* must measure SPDIF sample rate before configuring codecs */
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unsigned long sr = spdif_measure_frequency();
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/* round to master list for SPDIF rate */
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int index = round_value_to_list32(sr, audio_master_sampr_list,
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SAMPR_NUM_FREQ, false);
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sample_rate = audio_master_sampr_list[index];
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/* round to HW playback rates for monitoring */
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index = round_value_to_list32(sr, hw_freq_sampr,
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HW_NUM_FREQ, false);
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pcm_set_frequency(hw_freq_sampr[index]);
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/* encoders with a limited number of rates do their own rounding */
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}
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else
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#endif
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{
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/* set sample rate from frequency selection */
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sample_rate = rec_freq_sampr[rec_frequency];
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pcm_set_frequency(sample_rate);
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}
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/* set monitoring */
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audio_set_output_source(rec_source);
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/* apply pcm settings to hardware */
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pcm_apply_settings(true);
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if (audio_load_encoder(enc_config.afmt))
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{
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/* start DMA transfer */
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pcm_record_data(pcm_rec_have_more, NULL, 0);
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/* do unlock after starting to prevent preincrement of dma_wr_pos */
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dma_lock = pre_record_ticks == 0;
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}
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else
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{
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logf("set rec opt: enc load failed");
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is_error = true;
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}
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} /* audio_set_recording_options */
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/**
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* Start recording
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*
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* Use audio_set_recording_options first to select recording options
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*/
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void audio_record(const char *filename)
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{
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logf("audio_record: %s", filename);
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pcm_thread_wait_for_stop();
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pcm_thread_sync_post(PCMREC_START, (void *)filename);
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logf("audio_record_done");
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} /* audio_record */
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void audio_new_file(const char *filename)
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{
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logf("audio_new_file: %s", filename);
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pcm_thread_wait_for_stop();
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pcm_thread_sync_post(PCMREC_NEW_FILE, (void *)filename);
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logf("audio_new_file done");
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} /* audio_new_file */
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void audio_stop_recording(void)
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{
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logf("audio_stop_recording");
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pcm_thread_wait_for_stop();
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if (is_recording)
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dma_lock = true; /* fix DMA write ptr at current position */
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pcm_thread_sync_post(PCMREC_STOP, NULL);
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logf("audio_stop_recording done");
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} /* audio_stop_recording */
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void audio_pause_recording(void)
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{
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logf("audio_pause_recording");
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pcm_thread_wait_for_stop();
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if (is_recording)
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dma_lock = true; /* fix DMA write ptr at current position */
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pcm_thread_sync_post(PCMREC_PAUSE, NULL);
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logf("audio_pause_recording done");
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} /* audio_pause_recording */
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void audio_resume_recording(void)
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{
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logf("audio_resume_recording");
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pcm_thread_wait_for_stop();
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pcm_thread_sync_post(PCMREC_RESUME, NULL);
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logf("audio_resume_recording done");
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} /* audio_resume_recording */
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/***************************************************************************/
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/* */
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/* Functions that execute in the context of pcmrec_thread */
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/* */
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/***************************************************************************/
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/** Filename Queue **/
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/* returns true if the queue is empty */
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static inline bool pcmrec_fnq_is_empty(void)
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{
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return fnq_rd_pos == fnq_wr_pos;
|
|
} /* pcmrec_fnq_is_empty */
|
|
|
|
/* empties the filename queue */
|
|
static inline void pcmrec_fnq_set_empty(void)
|
|
{
|
|
fnq_rd_pos = fnq_wr_pos;
|
|
} /* pcmrec_fnq_set_empty */
|
|
|
|
/* returns true if the queue is full */
|
|
static bool pcmrec_fnq_is_full(void)
|
|
{
|
|
ssize_t size = fnq_wr_pos - fnq_rd_pos;
|
|
if (size < 0)
|
|
size += fnq_size;
|
|
|
|
return size >= fnq_size - MAX_PATH;
|
|
} /* pcmrec_fnq_is_full */
|
|
|
|
/* queue another filename - will overwrite oldest one if full */
|
|
static bool pcmrec_fnq_add_filename(const char *filename)
|
|
{
|
|
strncpy(fn_queue + fnq_wr_pos, filename, MAX_PATH);
|
|
|
|
if ((fnq_wr_pos += MAX_PATH) >= fnq_size)
|
|
fnq_wr_pos = 0;
|
|
|
|
if (fnq_rd_pos != fnq_wr_pos)
|
|
return true;
|
|
|
|
/* queue full */
|
|
if ((fnq_rd_pos += MAX_PATH) >= fnq_size)
|
|
fnq_rd_pos = 0;
|
|
|
|
return true;
|
|
} /* pcmrec_fnq_add_filename */
|
|
|
|
/* replace the last filename added */
|
|
static bool pcmrec_fnq_replace_tail(const char *filename)
|
|
{
|
|
int pos;
|
|
|
|
if (pcmrec_fnq_is_empty())
|
|
return false;
|
|
|
|
pos = fnq_wr_pos - MAX_PATH;
|
|
if (pos < 0)
|
|
pos = fnq_size - MAX_PATH;
|
|
|
|
strncpy(fn_queue + pos, filename, MAX_PATH);
|
|
|
|
return true;
|
|
} /* pcmrec_fnq_replace_tail */
|
|
|
|
/* pulls the next filename from the queue */
|
|
static bool pcmrec_fnq_get_filename(char *filename)
|
|
{
|
|
if (pcmrec_fnq_is_empty())
|
|
return false;
|
|
|
|
if (filename)
|
|
strncpy(filename, fn_queue + fnq_rd_pos, MAX_PATH);
|
|
|
|
if ((fnq_rd_pos += MAX_PATH) >= fnq_size)
|
|
fnq_rd_pos = 0;
|
|
|
|
return true;
|
|
} /* pcmrec_fnq_get_filename */
|
|
|
|
/* close the file number pointed to by fd_p */
|
|
static void pcmrec_close_file(int *fd_p)
|
|
{
|
|
if (*fd_p < 0)
|
|
return; /* preserve error */
|
|
|
|
close(*fd_p);
|
|
*fd_p = -1;
|
|
} /* pcmrec_close_file */
|
|
|
|
/** Data Flushing **/
|
|
|
|
/**
|
|
* called after callback to update sizes if codec changed the amount of data
|
|
* a chunk represents
|
|
*/
|
|
static inline void pcmrec_update_sizes_inl(size_t prev_enc_size,
|
|
unsigned long prev_num_pcm)
|
|
{
|
|
if (rec_fdata.new_enc_size != prev_enc_size)
|
|
{
|
|
ssize_t size_diff = rec_fdata.new_enc_size - prev_enc_size;
|
|
num_rec_bytes += size_diff;
|
|
accum_rec_bytes += size_diff;
|
|
}
|
|
|
|
if (rec_fdata.new_num_pcm != prev_num_pcm)
|
|
{
|
|
unsigned long pcm_diff = rec_fdata.new_num_pcm - prev_num_pcm;
|
|
num_rec_samples += pcm_diff;
|
|
accum_pcm_samples += pcm_diff;
|
|
}
|
|
} /* pcmrec_update_sizes_inl */
|
|
|
|
/* don't need to inline every instance */
|
|
static void pcmrec_update_sizes(size_t prev_enc_size,
|
|
unsigned long prev_num_pcm)
|
|
{
|
|
pcmrec_update_sizes_inl(prev_enc_size, prev_num_pcm);
|
|
} /* pcmrec_update_sizes */
|
|
|
|
static void pcmrec_start_file(void)
|
|
{
|
|
size_t enc_size = rec_fdata.new_enc_size;
|
|
unsigned long num_pcm = rec_fdata.new_num_pcm;
|
|
int curr_rec_file = rec_fdata.rec_file;
|
|
char filename[MAX_PATH];
|
|
|
|
/* must always pull the filename that matches with this queue */
|
|
if (!pcmrec_fnq_get_filename(filename))
|
|
{
|
|
logf("start file: fnq empty");
|
|
*filename = '\0';
|
|
is_error = true;
|
|
}
|
|
else if (is_error)
|
|
{
|
|
logf("start file: is_error already");
|
|
}
|
|
else if (curr_rec_file >= 0)
|
|
{
|
|
/* Any previous file should have been closed */
|
|
logf("start file: file already open");
|
|
is_error = true;
|
|
}
|
|
|
|
if (is_error)
|
|
rec_fdata.chunk->flags |= CHUNKF_ERROR;
|
|
|
|
/* encoder can set error flag here and should increase
|
|
enc_new_size and pcm_new_size to reflect additional
|
|
data written if any */
|
|
rec_fdata.filename = filename;
|
|
enc_events_callback(ENC_START_FILE, &rec_fdata);
|
|
|
|
if (!is_error && (rec_fdata.chunk->flags & CHUNKF_ERROR))
|
|
{
|
|
logf("start file: enc error");
|
|
is_error = true;
|
|
}
|
|
|
|
if (is_error)
|
|
{
|
|
pcmrec_close_file(&curr_rec_file);
|
|
/* Write no more to this file */
|
|
rec_fdata.chunk->flags |= CHUNKF_END_FILE;
|
|
}
|
|
else
|
|
{
|
|
pcmrec_update_sizes(enc_size, num_pcm);
|
|
}
|
|
|
|
rec_fdata.chunk->flags &= ~CHUNKF_START_FILE;
|
|
} /* pcmrec_start_file */
|
|
|
|
static inline void pcmrec_write_chunk(void)
|
|
{
|
|
size_t enc_size = rec_fdata.new_enc_size;
|
|
unsigned long num_pcm = rec_fdata.new_num_pcm;
|
|
|
|
if (is_error)
|
|
rec_fdata.chunk->flags |= CHUNKF_ERROR;
|
|
|
|
enc_events_callback(ENC_WRITE_CHUNK, &rec_fdata);
|
|
|
|
if ((long)rec_fdata.chunk->flags >= 0)
|
|
{
|
|
pcmrec_update_sizes_inl(enc_size, num_pcm);
|
|
}
|
|
else if (!is_error)
|
|
{
|
|
logf("wr chk enc error %d %d",
|
|
rec_fdata.chunk->enc_size, rec_fdata.chunk->num_pcm);
|
|
is_error = true;
|
|
}
|
|
} /* pcmrec_write_chunk */
|
|
|
|
static void pcmrec_end_file(void)
|
|
{
|
|
/* all data in output buffer for current file will have been
|
|
written and encoder can now do any nescessary steps to
|
|
finalize the written file */
|
|
size_t enc_size = rec_fdata.new_enc_size;
|
|
unsigned long num_pcm = rec_fdata.new_num_pcm;
|
|
|
|
enc_events_callback(ENC_END_FILE, &rec_fdata);
|
|
|
|
if (!is_error)
|
|
{
|
|
if (rec_fdata.chunk->flags & CHUNKF_ERROR)
|
|
{
|
|
logf("end file: enc error");
|
|
is_error = true;
|
|
}
|
|
else
|
|
{
|
|
pcmrec_update_sizes(enc_size, num_pcm);
|
|
}
|
|
}
|
|
|
|
/* Force file close if error */
|
|
if (is_error)
|
|
pcmrec_close_file(&rec_fdata.rec_file);
|
|
|
|
rec_fdata.chunk->flags &= ~CHUNKF_END_FILE;
|
|
} /* pcmrec_end_file */
|
|
|
|
/**
|
|
* Process the chunks
|
|
*
|
|
* This function is called when queue_get_w_tmo times out.
|
|
*
|
|
* Set flush_num to the number of files to flush to disk.
|
|
* flush_num = -1 to flush all available chunks to disk.
|
|
* flush_num = 0 normal write thresholding
|
|
* flush_num = 1 or greater - all available chunks of current file plus
|
|
* flush_num file starts if first chunk has been processed.
|
|
*
|
|
*/
|
|
static void pcmrec_flush(unsigned flush_num)
|
|
{
|
|
static unsigned long last_flush_tick = 0;
|
|
unsigned long start_tick;
|
|
int num_ready, num;
|
|
int prio;
|
|
int i;
|
|
|
|
num_ready = enc_wr_index - enc_rd_index;
|
|
if (num_ready < 0)
|
|
num_ready += enc_num_chunks;
|
|
|
|
num = num_ready;
|
|
|
|
if (flush_num == 0)
|
|
{
|
|
if (!is_recording)
|
|
return;
|
|
|
|
if (ata_spinup_time != spinup_time)
|
|
{
|
|
/* spinup time has changed, calculate new write threshold */
|
|
logf("new t spinup : %d", ata_spinup_time);
|
|
unsigned long st = spinup_time = ata_spinup_time;
|
|
|
|
/* write at 5s + st remaining in enc_buffer */
|
|
if (st < 2*HZ)
|
|
st = 2*HZ; /* my drive is usually < 250 ticks :) */
|
|
else if (st > 10*HZ)
|
|
st = 10*HZ;
|
|
|
|
write_threshold = enc_num_chunks -
|
|
(int)(((5ull*HZ + st)*4ull*sample_rate + (enc_chunk_size-1)) /
|
|
(enc_chunk_size*HZ));
|
|
|
|
if (write_threshold < 0)
|
|
write_threshold = 0;
|
|
else if (write_threshold > panic_threshold)
|
|
write_threshold = panic_threshold;
|
|
|
|
logf("new wr thresh: %d", write_threshold);
|
|
}
|
|
|
|
if (num_ready < write_threshold)
|
|
return;
|
|
|
|
/* if we're getting called too much and this isn't forced,
|
|
boost stat */
|
|
if (current_tick - last_flush_tick < HZ/2)
|
|
num = panic_threshold;
|
|
}
|
|
|
|
start_tick = current_tick;
|
|
prio = -1;
|
|
|
|
logf("writing: %d (%d)", num_ready, flush_num);
|
|
|
|
cpu_boost_id(true, CPUBOOSTID_PCMRECORD);
|
|
|
|
for (i=0; i<num_ready; i++)
|
|
{
|
|
if (prio == -1 && (num >= panic_threshold ||
|
|
current_tick - start_tick > 10*HZ))
|
|
{
|
|
/* losing ground - boost priority until finished */
|
|
logf("pcmrec: boost priority");
|
|
prio = thread_set_priority(NULL, thread_get_priority(NULL)-1);
|
|
}
|
|
|
|
rec_fdata.chunk = GET_ENC_CHUNK(enc_rd_index);
|
|
rec_fdata.new_enc_size = rec_fdata.chunk->enc_size;
|
|
rec_fdata.new_num_pcm = rec_fdata.chunk->num_pcm;
|
|
|
|
if (rec_fdata.chunk->flags & CHUNKF_START_FILE)
|
|
{
|
|
pcmrec_start_file();
|
|
if (--flush_num == 0)
|
|
i = num_ready; /* stop on next loop - must write this
|
|
chunk if it has data */
|
|
}
|
|
|
|
pcmrec_write_chunk();
|
|
|
|
if (rec_fdata.chunk->flags & CHUNKF_END_FILE)
|
|
pcmrec_end_file();
|
|
|
|
INC_ENC_INDEX(enc_rd_index);
|
|
|
|
if (is_error)
|
|
break;
|
|
|
|
if (prio == -1)
|
|
{
|
|
num = enc_wr_index - enc_rd_index;
|
|
if (num < 0)
|
|
num += enc_num_chunks;
|
|
}
|
|
|
|
/* no yielding, the file apis called in the codecs do that */
|
|
} /* end for */
|
|
|
|
/* sync file */
|
|
if (rec_fdata.rec_file >= 0)
|
|
fsync(rec_fdata.rec_file);
|
|
|
|
cpu_boost_id(false, CPUBOOSTID_PCMRECORD);
|
|
|
|
if (prio != -1)
|
|
{
|
|
/* return to original priority */
|
|
logf("pcmrec: unboost priority");
|
|
thread_set_priority(NULL, prio);
|
|
}
|
|
|
|
last_flush_tick = current_tick; /* save tick when we left */
|
|
logf("done");
|
|
} /* pcmrec_flush */
|
|
|
|
/**
|
|
* Marks a new stream in the buffer and gives the encoder a chance for special
|
|
* handling of transition from one to the next. The encoder may change the
|
|
* chunk that ends the old stream by requesting more chunks and similiarly for
|
|
* the new but must always advance the position though the interface. It can
|
|
* later reject any data it cares to when writing the file but should mark the
|
|
* chunk so it can recognize this. ENC_WRITE_CHUNK event must be able to accept
|
|
* a NULL data pointer without error as well.
|
|
*/
|
|
static void pcmrec_new_stream(const char *filename, /* next file name */
|
|
unsigned long flags, /* CHUNKF_* flags */
|
|
int pre_index) /* index for prerecorded data */
|
|
{
|
|
logf("pcmrec_new_stream");
|
|
|
|
struct enc_buffer_event_data data;
|
|
bool (*fnq_add_fn)(const char *) = NULL;
|
|
struct enc_chunk_hdr *start = NULL;
|
|
|
|
int get_chunk_index(struct enc_chunk_hdr *chunk)
|
|
{
|
|
return ((char *)chunk - (char *)enc_buffer) / enc_chunk_size;
|
|
}
|
|
|
|
struct enc_chunk_hdr * get_prev_chunk(int index)
|
|
{
|
|
DEC_ENC_INDEX(index);
|
|
return GET_ENC_CHUNK(index);
|
|
}
|
|
|
|
data.pre_chunk = NULL;
|
|
data.chunk = GET_ENC_CHUNK(enc_wr_index);
|
|
|
|
/* end chunk */
|
|
if (flags & CHUNKF_END_FILE)
|
|
{
|
|
data.chunk->flags &= CHUNKF_START_FILE | CHUNKF_END_FILE;
|
|
|
|
if (data.chunk->flags & CHUNKF_START_FILE)
|
|
{
|
|
/* cannot start and end on same unprocessed chunk */
|
|
logf("file end on start");
|
|
flags &= ~CHUNKF_END_FILE;
|
|
}
|
|
else if (enc_rd_index == enc_wr_index)
|
|
{
|
|
/* all data flushed but file not ended - chunk will be left
|
|
empty */
|
|
logf("end on dead end");
|
|
data.chunk->flags = 0;
|
|
data.chunk->enc_size = 0;
|
|
data.chunk->num_pcm = 0;
|
|
data.chunk->enc_data = NULL;
|
|
INC_ENC_INDEX(enc_wr_index);
|
|
data.chunk = GET_ENC_CHUNK(enc_wr_index);
|
|
}
|
|
else
|
|
{
|
|
struct enc_chunk_hdr *last = get_prev_chunk(enc_wr_index);
|
|
|
|
if (last->flags & CHUNKF_END_FILE)
|
|
{
|
|
/* end already processed and marked - can't end twice */
|
|
logf("file end again");
|
|
flags &= ~CHUNKF_END_FILE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* start chunk */
|
|
if (flags & CHUNKF_START_FILE)
|
|
{
|
|
bool pre = flags & CHUNKF_PRERECORD;
|
|
|
|
if (pre)
|
|
{
|
|
logf("stream prerecord start");
|
|
start = data.pre_chunk = GET_ENC_CHUNK(pre_index);
|
|
start->flags &= CHUNKF_START_FILE | CHUNKF_PRERECORD;
|
|
}
|
|
else
|
|
{
|
|
logf("stream normal start");
|
|
start = data.chunk;
|
|
start->flags &= CHUNKF_START_FILE;
|
|
}
|
|
|
|
/* if encoder hasn't yet processed the last start - abort the start
|
|
of the previous file queued or else it will be empty and invalid */
|
|
if (start->flags & CHUNKF_START_FILE)
|
|
{
|
|
logf("replacing fnq tail: %s", filename);
|
|
fnq_add_fn = pcmrec_fnq_replace_tail;
|
|
}
|
|
else
|
|
{
|
|
logf("adding filename: %s", filename);
|
|
fnq_add_fn = pcmrec_fnq_add_filename;
|
|
}
|
|
}
|
|
|
|
data.flags = flags;
|
|
enc_events_callback(ENC_REC_NEW_STREAM, &data);
|
|
|
|
if (flags & CHUNKF_END_FILE)
|
|
{
|
|
int i = get_chunk_index(data.chunk);
|
|
get_prev_chunk(i)->flags |= CHUNKF_END_FILE;
|
|
}
|
|
|
|
if (start)
|
|
{
|
|
if (!(flags & CHUNKF_PRERECORD))
|
|
{
|
|
/* get stats on data added to start - sort of a prerecord operation */
|
|
int i = get_chunk_index(data.chunk);
|
|
struct enc_chunk_hdr *chunk = data.chunk;
|
|
|
|
logf("start data: %d %d", i, enc_wr_index);
|
|
|
|
num_rec_bytes = 0;
|
|
num_rec_samples = 0;
|
|
|
|
while (i != enc_wr_index)
|
|
{
|
|
num_rec_bytes += chunk->enc_size;
|
|
num_rec_samples += chunk->num_pcm;
|
|
INC_ENC_INDEX(i);
|
|
chunk = GET_ENC_CHUNK(i);
|
|
}
|
|
|
|
start->flags &= ~CHUNKF_START_FILE;
|
|
start = data.chunk;
|
|
}
|
|
|
|
start->flags |= CHUNKF_START_FILE;
|
|
|
|
/* flush one file out if full and adding */
|
|
if (fnq_add_fn == pcmrec_fnq_add_filename && pcmrec_fnq_is_full())
|
|
{
|
|
logf("fnq full: flushing 1");
|
|
pcmrec_flush(1);
|
|
}
|
|
|
|
fnq_add_fn(filename);
|
|
}
|
|
} /* pcmrec_new_stream */
|
|
|
|
/** event handlers for pcmrec thread */
|
|
|
|
/* PCMREC_INIT */
|
|
static void pcmrec_init(void)
|
|
{
|
|
rec_fdata.rec_file = -1;
|
|
|
|
/* pcm FIFO */
|
|
dma_lock = true;
|
|
pcm_rd_pos = 0;
|
|
dma_wr_pos = 0;
|
|
|
|
/* encoder FIFO */
|
|
enc_wr_index = 0;
|
|
enc_rd_index = 0;
|
|
|
|
/* filename queue */
|
|
fnq_rd_pos = 0;
|
|
fnq_wr_pos = 0;
|
|
|
|
/* stats */
|
|
num_rec_bytes = 0;
|
|
num_rec_samples = 0;
|
|
accum_rec_bytes = 0;
|
|
accum_pcm_samples = 0;
|
|
|
|
pcm_thread_unsignal_event(PCMREC_CLOSE);
|
|
is_recording = false;
|
|
is_paused = false;
|
|
is_stopping = false;
|
|
is_error = false;
|
|
|
|
pcm_buffer = audio_get_recording_buffer(&rec_buffer_size);
|
|
/* Line align pcm_buffer 2^4=16 bytes */
|
|
pcm_buffer = (unsigned char *)ALIGN_UP_P2((unsigned)pcm_buffer, 4);
|
|
enc_buffer = pcm_buffer + ALIGN_UP_P2(PCM_NUM_CHUNKS*PCM_CHUNK_SIZE +
|
|
PCM_MAX_FEED_SIZE, 2);
|
|
|
|
pcm_init_recording();
|
|
pcm_thread_signal_event(PCMREC_INIT);
|
|
} /* pcmrec_init */
|
|
|
|
/* PCMREC_CLOSE */
|
|
static void pcmrec_close(void)
|
|
{
|
|
dma_lock = true;
|
|
pcm_close_recording();
|
|
pcm_thread_unsignal_event(PCMREC_INIT);
|
|
pcm_thread_signal_event(PCMREC_CLOSE);
|
|
} /* pcmrec_close */
|
|
|
|
/* PCMREC_START */
|
|
static void pcmrec_start(const char *filename)
|
|
{
|
|
unsigned long pre_sample_ticks;
|
|
int rd_start;
|
|
|
|
logf("pcmrec_start: %s", filename);
|
|
|
|
if (is_recording)
|
|
{
|
|
logf("already recording");
|
|
goto already_recording;
|
|
}
|
|
|
|
/* reset stats */
|
|
num_rec_bytes = 0;
|
|
num_rec_samples = 0;
|
|
accum_rec_bytes = 0;
|
|
accum_pcm_samples = 0;
|
|
spinup_time = -1;
|
|
|
|
rd_start = enc_wr_index;
|
|
pre_sample_ticks = 0;
|
|
|
|
if (pre_record_ticks)
|
|
{
|
|
int i;
|
|
|
|
/* calculate number of available chunks */
|
|
unsigned long avail_pre_chunks = (enc_wr_index - enc_rd_index +
|
|
enc_num_chunks) % enc_num_chunks;
|
|
/* overflow at 974 seconds of prerecording at 44.1kHz */
|
|
unsigned long pre_record_sample_ticks = enc_sample_rate*pre_record_ticks;
|
|
|
|
/* Get exact measure of recorded data as number of samples aren't
|
|
nescessarily going to be the max for each chunk */
|
|
for (i = rd_start; avail_pre_chunks-- > 0;)
|
|
{
|
|
struct enc_chunk_hdr *chunk;
|
|
unsigned long chunk_sample_ticks;
|
|
|
|
DEC_ENC_INDEX(i);
|
|
|
|
chunk = GET_ENC_CHUNK(i);
|
|
|
|
/* must have data to be counted */
|
|
if (chunk->enc_data == NULL)
|
|
continue;
|
|
|
|
chunk_sample_ticks = chunk->num_pcm*HZ;
|
|
|
|
rd_start = i;
|
|
pre_sample_ticks += chunk_sample_ticks;
|
|
num_rec_bytes += chunk->enc_size;
|
|
num_rec_samples += chunk->num_pcm;
|
|
|
|
/* stop here if enough already */
|
|
if (pre_sample_ticks >= pre_record_sample_ticks)
|
|
break;
|
|
}
|
|
|
|
accum_rec_bytes = num_rec_bytes;
|
|
accum_pcm_samples = num_rec_samples;
|
|
}
|
|
|
|
enc_rd_index = rd_start;
|
|
|
|
/* filename queue should be empty */
|
|
if (!pcmrec_fnq_is_empty())
|
|
{
|
|
logf("fnq: not empty!");
|
|
pcmrec_fnq_set_empty();
|
|
}
|
|
|
|
dma_lock = false;
|
|
is_paused = false;
|
|
is_recording = true;
|
|
|
|
pcmrec_new_stream(filename,
|
|
CHUNKF_START_FILE |
|
|
(pre_sample_ticks > 0 ? CHUNKF_PRERECORD : 0),
|
|
enc_rd_index);
|
|
|
|
already_recording:
|
|
pcm_thread_signal_event(PCMREC_START);
|
|
logf("pcmrec_start done");
|
|
} /* pcmrec_start */
|
|
|
|
/* PCMREC_STOP */
|
|
static void pcmrec_stop(void)
|
|
{
|
|
logf("pcmrec_stop");
|
|
|
|
if (!is_recording)
|
|
{
|
|
logf("not recording");
|
|
goto not_recording_or_stopping;
|
|
}
|
|
else if (is_stopping)
|
|
{
|
|
logf("already stopping");
|
|
goto not_recording_or_stopping;
|
|
}
|
|
|
|
is_stopping = true;
|
|
dma_lock = true; /* lock dma write position */
|
|
queue_post(&pcmrec_queue, PCMREC_FINISH_STOP, NULL);
|
|
|
|
not_recording_or_stopping:
|
|
pcm_thread_signal_event(PCMREC_STOP);
|
|
logf("pcmrec_stop done");
|
|
} /* pcmrec_stop */
|
|
|
|
/* PCMREC_FINISH_STOP */
|
|
static void pcmrec_finish_stop(void)
|
|
{
|
|
logf("pcmrec_finish_stop");
|
|
|
|
if (!is_stopping)
|
|
{
|
|
logf("not stopping");
|
|
goto not_stopping;
|
|
}
|
|
|
|
/* flush all available data first to avoid overflow while waiting
|
|
for encoding to finish */
|
|
pcmrec_flush(-1);
|
|
|
|
/* wait for encoder to finish remaining data */
|
|
if (!is_error)
|
|
{
|
|
while (!wav_queue_empty)
|
|
yield();
|
|
}
|
|
|
|
/* end stream at last data */
|
|
pcmrec_new_stream(NULL, CHUNKF_END_FILE, 0);
|
|
|
|
/* flush anything else encoder added */
|
|
pcmrec_flush(-1);
|
|
|
|
/* remove any pending file start not yet processed - should be at
|
|
most one at enc_wr_index */
|
|
pcmrec_fnq_get_filename(NULL);
|
|
/* encoder should abort any chunk it was in midst of processing */
|
|
GET_ENC_CHUNK(enc_wr_index)->flags = CHUNKF_ABORT;
|
|
|
|
/* filename queue should be empty */
|
|
if (!pcmrec_fnq_is_empty())
|
|
{
|
|
logf("fnq: not empty!");
|
|
pcmrec_fnq_set_empty();
|
|
}
|
|
|
|
/* be absolutely sure the file is closed */
|
|
if (is_error)
|
|
pcmrec_close_file(&rec_fdata.rec_file);
|
|
rec_fdata.rec_file = -1;
|
|
|
|
is_recording = false;
|
|
is_paused = false;
|
|
is_stopping = false;
|
|
dma_lock = pre_record_ticks == 0;
|
|
|
|
not_stopping:
|
|
logf("pcmrec_finish_stop done");
|
|
} /* pcmrec_finish_stop */
|
|
|
|
/* PCMREC_PAUSE */
|
|
static void pcmrec_pause(void)
|
|
{
|
|
logf("pcmrec_pause");
|
|
|
|
if (!is_recording)
|
|
{
|
|
logf("not recording");
|
|
goto not_recording_or_paused;
|
|
}
|
|
else if (is_paused)
|
|
{
|
|
logf("already paused");
|
|
goto not_recording_or_paused;
|
|
}
|
|
|
|
dma_lock = true; /* fix DMA write pointer at current position */
|
|
is_paused = true;
|
|
|
|
not_recording_or_paused:
|
|
pcm_thread_signal_event(PCMREC_PAUSE);
|
|
logf("pcmrec_pause done");
|
|
} /* pcmrec_pause */
|
|
|
|
/* PCMREC_RESUME */
|
|
static void pcmrec_resume(void)
|
|
{
|
|
logf("pcmrec_resume");
|
|
|
|
if (!is_recording)
|
|
{
|
|
logf("not recording");
|
|
goto not_recording_or_not_paused;
|
|
}
|
|
else if (!is_paused)
|
|
{
|
|
logf("not paused");
|
|
goto not_recording_or_not_paused;
|
|
}
|
|
|
|
is_paused = false;
|
|
is_recording = true;
|
|
dma_lock = false;
|
|
|
|
not_recording_or_not_paused:
|
|
pcm_thread_signal_event(PCMREC_RESUME);
|
|
logf("pcmrec_resume done");
|
|
} /* pcmrec_resume */
|
|
|
|
/* PCMREC_NEW_FILE */
|
|
static void pcmrec_new_file(const char *filename)
|
|
{
|
|
logf("pcmrec_new_file: %s", filename);
|
|
|
|
if (!is_recording)
|
|
{
|
|
logf("not recording");
|
|
goto not_recording;
|
|
}
|
|
|
|
num_rec_bytes = 0;
|
|
num_rec_samples = 0;
|
|
|
|
pcmrec_new_stream(filename,
|
|
CHUNKF_START_FILE | CHUNKF_END_FILE,
|
|
0);
|
|
|
|
not_recording:
|
|
pcm_thread_signal_event(PCMREC_NEW_FILE);
|
|
logf("pcmrec_new_file done");
|
|
} /* pcmrec_new_file */
|
|
|
|
static void pcmrec_thread(void) __attribute__((noreturn));
|
|
static void pcmrec_thread(void)
|
|
{
|
|
struct event ev;
|
|
|
|
logf("thread pcmrec start");
|
|
|
|
while(1)
|
|
{
|
|
if (is_recording)
|
|
{
|
|
/* Poll periodically to flush data */
|
|
queue_wait_w_tmo(&pcmrec_queue, &ev, HZ/5);
|
|
|
|
if (ev.id == SYS_TIMEOUT)
|
|
{
|
|
pcmrec_flush(0); /* flush if getting full */
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Not doing anything - sit and wait for commands */
|
|
queue_wait(&pcmrec_queue, &ev);
|
|
}
|
|
|
|
switch (ev.id)
|
|
{
|
|
case PCMREC_INIT:
|
|
pcmrec_init();
|
|
break;
|
|
|
|
case PCMREC_CLOSE:
|
|
pcmrec_close();
|
|
break;
|
|
|
|
case PCMREC_START:
|
|
pcmrec_start((const char *)ev.data);
|
|
break;
|
|
|
|
case PCMREC_STOP:
|
|
pcmrec_stop();
|
|
break;
|
|
|
|
case PCMREC_FINISH_STOP:
|
|
pcmrec_finish_stop();
|
|
break;
|
|
|
|
case PCMREC_PAUSE:
|
|
pcmrec_pause();
|
|
break;
|
|
|
|
case PCMREC_RESUME:
|
|
pcmrec_resume();
|
|
break;
|
|
|
|
case PCMREC_NEW_FILE:
|
|
pcmrec_new_file((const char *)ev.data);
|
|
break;
|
|
|
|
case PCMREC_FLUSH_NUM:
|
|
pcmrec_flush((unsigned)ev.data);
|
|
break;
|
|
|
|
case SYS_USB_CONNECTED:
|
|
if (!is_recording)
|
|
{
|
|
pcmrec_close();
|
|
usb_acknowledge(SYS_USB_CONNECTED_ACK);
|
|
usb_wait_for_disconnect(&pcmrec_queue);
|
|
}
|
|
break;
|
|
} /* end switch */
|
|
} /* end while */
|
|
} /* pcmrec_thread */
|
|
|
|
/****************************************************************************/
|
|
/* */
|
|
/* following functions will be called by the encoder codec */
|
|
/* */
|
|
/****************************************************************************/
|
|
|
|
/* pass the encoder settings to the encoder */
|
|
void enc_get_inputs(struct enc_inputs *inputs)
|
|
{
|
|
inputs->sample_rate = sample_rate;
|
|
inputs->num_channels = num_channels;
|
|
inputs->config = &enc_config;
|
|
} /* enc_get_inputs */
|
|
|
|
/* set the encoder dimensions (called by encoder codec at initialization and
|
|
termination) */
|
|
void enc_set_parameters(struct enc_parameters *params)
|
|
{
|
|
size_t bufsize, resbytes;
|
|
|
|
logf("enc_set_parameters");
|
|
|
|
if (!params)
|
|
{
|
|
logf("reset");
|
|
/* Encoder is terminating */
|
|
memset(&enc_config, 0, sizeof (enc_config));
|
|
enc_sample_rate = 0;
|
|
return;
|
|
}
|
|
|
|
enc_sample_rate = params->enc_sample_rate;
|
|
logf("enc sampr:%d", enc_sample_rate);
|
|
|
|
pcm_rd_pos = dma_wr_pos;
|
|
|
|
enc_config.afmt = params->afmt;
|
|
/* addition of the header is always implied - chunk size 4-byte aligned */
|
|
enc_chunk_size =
|
|
ALIGN_UP_P2(ENC_CHUNK_HDR_SIZE + params->chunk_size, 2);
|
|
enc_data_size = enc_chunk_size - ENC_CHUNK_HDR_SIZE;
|
|
enc_events_callback = params->events_callback;
|
|
|
|
logf("chunk size:%d", enc_chunk_size);
|
|
|
|
/*** Configure the buffers ***/
|
|
|
|
/* Layout of recording buffer:
|
|
* [ax] = possible alignment x multiple
|
|
* [sx] = possible size alignment of x multiple
|
|
* |[a16]|[s4]:PCM Buffer+PCM Guard|[s4 each]:Encoder Chunks|->
|
|
* |[[s4]:Reserved Bytes]|Filename Queue->|[space]|
|
|
*/
|
|
resbytes = ALIGN_UP_P2(params->reserve_bytes, 2);
|
|
logf("resbytes:%d", resbytes);
|
|
|
|
bufsize = rec_buffer_size - (enc_buffer - pcm_buffer) -
|
|
resbytes - FNQ_MIN_NUM_PATHS*MAX_PATH;
|
|
|
|
enc_num_chunks = bufsize / enc_chunk_size;
|
|
logf("num chunks:%d", enc_num_chunks);
|
|
|
|
/* get real amount used by encoder chunks */
|
|
bufsize = enc_num_chunks*enc_chunk_size;
|
|
logf("enc size:%d", bufsize);
|
|
|
|
/* panic boost thread priority at 1 second remaining */
|
|
panic_threshold = enc_num_chunks -
|
|
(4*sample_rate + (enc_chunk_size-1)) / enc_chunk_size;
|
|
if (panic_threshold < 0)
|
|
panic_threshold = 0;
|
|
|
|
logf("panic thr:%d", panic_threshold);
|
|
|
|
/** set OUT parameters **/
|
|
params->enc_buffer = enc_buffer;
|
|
params->buf_chunk_size = enc_chunk_size;
|
|
params->num_chunks = enc_num_chunks;
|
|
|
|
/* calculate reserve buffer start and return pointer to encoder */
|
|
params->reserve_buffer = NULL;
|
|
if (resbytes > 0)
|
|
{
|
|
params->reserve_buffer = enc_buffer + bufsize;
|
|
bufsize += resbytes;
|
|
}
|
|
|
|
/* place filename queue at end of buffer using up whatever remains */
|
|
fnq_rd_pos = 0; /* reset */
|
|
fnq_wr_pos = 0; /* reset */
|
|
fn_queue = enc_buffer + bufsize;
|
|
fnq_size = pcm_buffer + rec_buffer_size - fn_queue;
|
|
fnq_size = ALIGN_DOWN(fnq_size, MAX_PATH);
|
|
logf("fnq files: %d", fnq_size / MAX_PATH);
|
|
|
|
#if 0
|
|
logf("ab :%08X", (unsigned long)audiobuf);
|
|
logf("pcm:%08X", (unsigned long)pcm_buffer);
|
|
logf("enc:%08X", (unsigned long)enc_buffer);
|
|
logf("res:%08X", (unsigned long)params->reserve_buffer);
|
|
logf("fnq:%08X", (unsigned long)fn_queue);
|
|
logf("end:%08X", (unsigned long)fn_queue + fnq_size);
|
|
logf("abe:%08X", (unsigned long)audiobufend);
|
|
#endif
|
|
|
|
/* init all chunk headers and reset indexes */
|
|
enc_rd_index = 0;
|
|
for (enc_wr_index = enc_num_chunks; enc_wr_index > 0; )
|
|
GET_ENC_CHUNK(--enc_wr_index)->flags = 0;
|
|
|
|
logf("enc_set_parameters done");
|
|
} /* enc_set_parameters */
|
|
|
|
/* return encoder chunk at current write position */
|
|
struct enc_chunk_hdr * enc_get_chunk(void)
|
|
{
|
|
struct enc_chunk_hdr *chunk = GET_ENC_CHUNK(enc_wr_index);
|
|
chunk->flags &= CHUNKF_START_FILE;
|
|
|
|
if (!is_recording)
|
|
chunk->flags |= CHUNKF_PRERECORD;
|
|
|
|
return chunk;
|
|
} /* enc_get_chunk */
|
|
|
|
/* releases the current chunk into the available chunks */
|
|
void enc_finish_chunk(void)
|
|
{
|
|
struct enc_chunk_hdr *chunk = GET_ENC_CHUNK(enc_wr_index);
|
|
|
|
/* encoder may have set error flag or written too much data */
|
|
if ((long)chunk->flags < 0 || chunk->enc_size > enc_data_size)
|
|
{
|
|
is_error = true;
|
|
|
|
#ifdef ROCKBOX_HAS_LOGF
|
|
if (chunk->enc_size > enc_data_size)
|
|
{
|
|
/* illegal to scribble over next chunk */
|
|
logf("finish chk ovf: %d>%d", chunk->enc_size, enc_data_size);
|
|
}
|
|
else
|
|
{
|
|
/* encoder set error flag */
|
|
logf("finish chk enc error");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* advance enc_wr_index to the next encoder chunk */
|
|
INC_ENC_INDEX(enc_wr_index);
|
|
|
|
if (enc_rd_index != enc_wr_index)
|
|
{
|
|
num_rec_bytes += chunk->enc_size;
|
|
accum_rec_bytes += chunk->enc_size;
|
|
num_rec_samples += chunk->num_pcm;
|
|
accum_pcm_samples += chunk->num_pcm;
|
|
}
|
|
else if (is_recording) /* buffer full */
|
|
{
|
|
/* keep current position */
|
|
logf("enc_buffer ovf");
|
|
DEC_ENC_INDEX(enc_wr_index);
|
|
}
|
|
else
|
|
{
|
|
/* advance enc_rd_index for prerecording */
|
|
INC_ENC_INDEX(enc_rd_index);
|
|
}
|
|
} /* enc_finish_chunk */
|
|
|
|
/* checks near empty state on pcm input buffer */
|
|
int enc_pcm_buf_near_empty(void)
|
|
{
|
|
/* less than 1sec raw data? => unboost encoder */
|
|
size_t avail = (dma_wr_pos - pcm_rd_pos) & PCM_CHUNK_MASK;
|
|
return avail < (sample_rate << 2) ? 1 : 0;
|
|
} /* enc_pcm_buf_near_empty */
|
|
|
|
/* passes a pointer to next chunk of unprocessed wav data */
|
|
/* TODO: this really should give the actual size returned */
|
|
unsigned char * enc_get_pcm_data(size_t size)
|
|
{
|
|
size_t avail = (dma_wr_pos - pcm_rd_pos) & PCM_CHUNK_MASK;
|
|
|
|
/* limit the requested pcm data size */
|
|
if (size > PCM_MAX_FEED_SIZE)
|
|
size = PCM_MAX_FEED_SIZE;
|
|
|
|
if (avail >= size)
|
|
{
|
|
unsigned char *ptr = pcm_buffer + pcm_rd_pos;
|
|
pcm_rd_pos = (pcm_rd_pos + size) & PCM_CHUNK_MASK;
|
|
|
|
/* ptr must point to continous data at wraparound position */
|
|
if ((size_t)pcm_rd_pos < size)
|
|
memcpy(pcm_buffer + PCM_NUM_CHUNKS*PCM_CHUNK_SIZE,
|
|
pcm_buffer, pcm_rd_pos);
|
|
|
|
wav_queue_empty = false;
|
|
return ptr;
|
|
}
|
|
|
|
/* not enough data available - encoder should idle */
|
|
wav_queue_empty = true;
|
|
return NULL;
|
|
} /* enc_get_pcm_data */
|
|
|
|
/* puts some pcm data back in the queue */
|
|
size_t enc_unget_pcm_data(size_t size)
|
|
{
|
|
/* can't let DMA advance write position when doing this */
|
|
int level = set_irq_level(HIGHEST_IRQ_LEVEL);
|
|
|
|
if (pcm_rd_pos != dma_wr_pos)
|
|
{
|
|
/* disallow backing up into current DMA write chunk */
|
|
size_t old_avail = (pcm_rd_pos - dma_wr_pos - PCM_CHUNK_SIZE)
|
|
& PCM_CHUNK_MASK;
|
|
|
|
/* limit size to amount of old data remaining */
|
|
if (size > old_avail)
|
|
size = old_avail;
|
|
|
|
pcm_rd_pos = (pcm_rd_pos - size) & PCM_CHUNK_MASK;
|
|
}
|
|
|
|
set_irq_level(level);
|
|
|
|
return size;
|
|
} /* enc_unget_pcm_data */
|
|
|
|
/** Low level pcm recording apis **/
|
|
|
|
/****************************************************************************
|
|
* Functions that do not require targeted implementation but only a targeted
|
|
* interface
|
|
*/
|
|
void pcm_record_data(pcm_more_callback_type more_ready,
|
|
unsigned char *start, size_t size)
|
|
{
|
|
pcm_callback_more_ready = more_ready;
|
|
|
|
if (!(start && size))
|
|
{
|
|
size = 0;
|
|
if (more_ready)
|
|
more_ready(&start, &size);
|
|
}
|
|
|
|
if (start && size)
|
|
pcm_rec_dma_start(start, size);
|
|
} /* pcm_record_data */
|
|
|
|
void pcm_stop_recording(void)
|
|
{
|
|
if (pcm_recording)
|
|
pcm_rec_dma_stop();
|
|
} /* pcm_stop_recording */
|