494 lines
15 KiB
C
494 lines
15 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2012 Frederik M.J. Vestre
|
|
* Based on speex.c codec interface:
|
|
* Copyright (C) 2006 Frederik M.J. Vestre
|
|
* Based on vorbis.c codec interface:
|
|
* Copyright (C) 2002 Björn Stenberg
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include "codeclib.h"
|
|
#include "inttypes.h"
|
|
#include "libopus/opus.h"
|
|
#include "libopus/opus_header.h"
|
|
|
|
|
|
#include "libopus/ogg/ogg.h"
|
|
#ifdef SIMULATOR
|
|
#include <tlsf.h>
|
|
#endif
|
|
|
|
CODEC_HEADER
|
|
|
|
#define SEEK_REWIND 3840 /* 80 ms @ 48 kHz */
|
|
|
|
/* the opus pseudo stack pointer */
|
|
extern char *global_stack;
|
|
|
|
/* Room for 120 ms of stereo audio at 48 kHz */
|
|
#define MAX_FRAME_SIZE (2*120*48)
|
|
#define CHUNKSIZE (16*1024)
|
|
#define SEEK_CHUNKSIZE 7*CHUNKSIZE
|
|
|
|
static int get_more_data(ogg_sync_state *oy)
|
|
{
|
|
int bytes;
|
|
char *buffer;
|
|
|
|
buffer = (char *)ogg_sync_buffer(oy, CHUNKSIZE);
|
|
bytes = ci->read_filebuf(buffer, CHUNKSIZE);
|
|
ogg_sync_wrote(oy,bytes);
|
|
|
|
return bytes;
|
|
}
|
|
/* The read/seek functions track absolute position within the stream */
|
|
static int64_t get_next_page(ogg_sync_state *oy, ogg_page *og,
|
|
int64_t boundary)
|
|
{
|
|
int64_t localoffset = ci->curpos;
|
|
long more;
|
|
long ret;
|
|
|
|
if (boundary > 0)
|
|
boundary += ci->curpos;
|
|
|
|
while (1) {
|
|
more = ogg_sync_pageseek(oy,og);
|
|
|
|
if (more < 0) {
|
|
/* skipped n bytes */
|
|
localoffset-=more;
|
|
} else {
|
|
if (more == 0) {
|
|
/* send more data */
|
|
if(!boundary)return(-1);
|
|
{
|
|
ret = get_more_data(oy);
|
|
if (ret == 0)
|
|
return(-2);
|
|
|
|
if (ret < 0)
|
|
return(-3);
|
|
}
|
|
} else {
|
|
/* got a page. Return the offset at the page beginning,
|
|
advance the internal offset past the page end */
|
|
|
|
int64_t ret=localoffset;
|
|
|
|
return(ret);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int64_t seek_backwards(ogg_sync_state *oy, ogg_page *og,
|
|
int64_t wantedpos)
|
|
{
|
|
int64_t crofs;
|
|
int64_t *curoffset=&crofs;
|
|
*curoffset=ci->curpos;
|
|
int64_t begin=*curoffset;
|
|
int64_t end=begin;
|
|
int64_t ret;
|
|
int64_t offset=-1;
|
|
int64_t avgpagelen=-1;
|
|
int64_t lastgranule=-1;
|
|
|
|
short time = -1;
|
|
|
|
while (offset == -1) {
|
|
|
|
begin -= SEEK_CHUNKSIZE;
|
|
|
|
if (begin < 0) {
|
|
if (time < 0) {
|
|
begin = 0;
|
|
time++;
|
|
} else {
|
|
LOGF("Can't seek that early:%lld\n",begin);
|
|
return -3; /* too early */
|
|
}
|
|
}
|
|
|
|
*curoffset = begin;
|
|
|
|
ci->seek_buffer(*curoffset);
|
|
|
|
ogg_sync_reset(oy);
|
|
|
|
lastgranule = -1;
|
|
|
|
while (*curoffset < end) {
|
|
ret = get_next_page(oy,og,end-*curoffset);
|
|
|
|
if (ret > 0) {
|
|
if (lastgranule != -1) {
|
|
if (avgpagelen < 0)
|
|
avgpagelen = (ogg_page_granulepos(og)-lastgranule);
|
|
else
|
|
avgpagelen=((ogg_page_granulepos(og)-lastgranule)
|
|
+ avgpagelen) / 2;
|
|
}
|
|
|
|
lastgranule=ogg_page_granulepos(og);
|
|
|
|
if ((lastgranule - (avgpagelen/4)) < wantedpos &&
|
|
(lastgranule + avgpagelen + (avgpagelen/4)) > wantedpos) {
|
|
|
|
/*wanted offset found Yeay!*/
|
|
|
|
/*LOGF("GnPagefound:%d,%d,%d,%d\n",ret,
|
|
lastgranule,wantedpos,avgpagelen);*/
|
|
|
|
return ret;
|
|
|
|
} else if (lastgranule > wantedpos) { /*too late, seek more*/
|
|
if (offset != -1) {
|
|
LOGF("Toolate, returnanyway:%lld,%lld,%lld,%lld\n",
|
|
ret,lastgranule,wantedpos,avgpagelen);
|
|
return ret;
|
|
}
|
|
break;
|
|
} else{ /*if (ogg_page_granulepos(&og)<wantedpos)*/
|
|
/*too early*/
|
|
offset = ret;
|
|
continue;
|
|
}
|
|
} else if (ret == -3)
|
|
return(-3);
|
|
else if (ret<=0)
|
|
break;
|
|
else if (*curoffset < end) {
|
|
/*this should not be possible*/
|
|
|
|
//LOGF("Seek:get_earlier_page:Offset:not_cached by granule:"\"%d,%d,%d,%d,%d\n",*curoffset,end,begin,wantedpos,curpos);
|
|
|
|
offset=ret;
|
|
}
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int speex_seek_page_granule(int64_t pos, int64_t curpos,
|
|
ogg_sync_state *oy, ogg_stream_state *os)
|
|
{
|
|
/* TODO: Someone may want to try to implement seek to packet,
|
|
instead of just to page (should be more accurate, not be any
|
|
faster) */
|
|
|
|
int64_t crofs;
|
|
int64_t *curbyteoffset = &crofs;
|
|
*curbyteoffset = ci->curpos;
|
|
int64_t curoffset;
|
|
curoffset = *curbyteoffset;
|
|
int64_t offset = 0;
|
|
ogg_page og = {0,0,0,0};
|
|
int64_t avgpagelen = -1;
|
|
int64_t lastgranule = -1;
|
|
#if 0
|
|
if(abs(pos-curpos)>10000 && headerssize>0 && curoffset-headerssize>10000) {
|
|
/* if seeking for more that 10sec,
|
|
headersize is known & more than 10kb is played,
|
|
try to guess a place to seek from the number of
|
|
bytes playe for this position, this works best when
|
|
the bitrate is relativly constant.
|
|
*/
|
|
|
|
curoffset = (((*curbyteoffset-headerssize) * pos)/curpos)*98/100;
|
|
if (curoffset < 0)
|
|
curoffset=0;
|
|
|
|
//int64_t toffset=curoffset;
|
|
|
|
ci->seek_buffer(curoffset);
|
|
|
|
ogg_sync_reset(oy);
|
|
|
|
offset = get_next_page(oy,&og,-1);
|
|
|
|
if (offset < 0) { /* could not find new page,use old offset */
|
|
LOGF("Seek/guess/fault:%lld->-<-%d,%lld:%lld,%d,%ld,%d\n",
|
|
curpos,0,pos,offset,0,
|
|
ci->curpos,/*stream_length*/0);
|
|
|
|
curoffset = *curbyteoffset;
|
|
|
|
ci->seek_buffer(curoffset);
|
|
|
|
ogg_sync_reset(oy);
|
|
} else {
|
|
if (ogg_page_granulepos(&og) == 0 && pos > 5000) {
|
|
LOGF("SEEK/guess/fault:%lld->-<-%lld,%lld:%lld,%d,%ld,%d\n",
|
|
curpos,ogg_page_granulepos(&og),pos,
|
|
offset,0,ci->curpos,/*stream_length*/0);
|
|
|
|
curoffset = *curbyteoffset;
|
|
|
|
ci->seek_buffer(curoffset);
|
|
|
|
ogg_sync_reset(oy);
|
|
} else {
|
|
curoffset = offset;
|
|
curpos = ogg_page_granulepos(&og);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
/* which way do we want to seek? */
|
|
if (pos == 0) { /* start */
|
|
*curbyteoffset = 0;
|
|
ci->seek_buffer(*curbyteoffset);
|
|
ogg_sync_reset(oy);
|
|
ogg_stream_reset(os);
|
|
return 0;
|
|
} else if (curpos > pos) { /* backwards */
|
|
offset = seek_backwards(oy,&og,pos);
|
|
|
|
if (offset > 0) {
|
|
*curbyteoffset = curoffset;
|
|
return 1;
|
|
}
|
|
} else { /* forwards */
|
|
|
|
while ( (offset = get_next_page(oy,&og,-1)) > 0) {
|
|
if (lastgranule != -1) {
|
|
if (avgpagelen < 0)
|
|
avgpagelen = (ogg_page_granulepos(&og) - lastgranule);
|
|
else
|
|
avgpagelen = ((ogg_page_granulepos(&og) - lastgranule)
|
|
+ avgpagelen) / 2;
|
|
}
|
|
|
|
lastgranule = ogg_page_granulepos(&og);
|
|
|
|
if ( ((lastgranule - (avgpagelen/4)) < pos && ( lastgranule +
|
|
avgpagelen + (avgpagelen / 4)) > pos) ||
|
|
lastgranule > pos) {
|
|
|
|
/*wanted offset found Yeay!*/
|
|
|
|
*curbyteoffset = offset;
|
|
|
|
return offset;
|
|
}
|
|
}
|
|
}
|
|
|
|
ci->seek_buffer(*curbyteoffset);
|
|
|
|
ogg_sync_reset(oy);
|
|
|
|
LOGF("Seek failed:%lld\n", offset);
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/* this is the codec entry point */
|
|
enum codec_status codec_main(enum codec_entry_call_reason reason)
|
|
{
|
|
(void)reason;
|
|
|
|
return CODEC_OK;
|
|
}
|
|
|
|
/* this is called for each file to process */
|
|
enum codec_status codec_run(void)
|
|
{
|
|
int error = CODEC_ERROR;
|
|
enum codec_command_action action;
|
|
intptr_t param;
|
|
ogg_sync_state oy;
|
|
ogg_page og;
|
|
ogg_packet op;
|
|
ogg_stream_state os;
|
|
int64_t page_granule = 0;
|
|
int stream_init = 0;
|
|
int sample_rate = 48000;
|
|
OpusDecoder *st = NULL;
|
|
OpusHeader header;
|
|
int ret;
|
|
unsigned long strtoffset;
|
|
int skip = 0;
|
|
int64_t seek_target;
|
|
uint64_t granule_pos;
|
|
|
|
ogg_malloc_init();
|
|
|
|
action = CODEC_ACTION_NULL;
|
|
param = ci->id3->elapsed;
|
|
strtoffset = ci->id3->offset;
|
|
|
|
global_stack = 0;
|
|
|
|
#if defined(CPU_COLDFIRE)
|
|
/* EMAC rounding is disabled because of MULT16_32_Q15, which will be
|
|
inaccurate with rounding in its current incarnation */
|
|
coldfire_set_macsr(EMAC_FRACTIONAL | EMAC_SATURATE);
|
|
#endif
|
|
|
|
/* pre-init the ogg_sync_state buffer, so it won't need many reallocs */
|
|
ogg_sync_init(&oy);
|
|
oy.storage = 64*1024;
|
|
oy.data = _ogg_malloc(oy.storage);
|
|
|
|
/* allocate output buffer */
|
|
uint16_t *output = (uint16_t*) _ogg_malloc(MAX_FRAME_SIZE*sizeof(uint16_t));
|
|
|
|
ci->seek_buffer(0);
|
|
ci->set_elapsed(0);
|
|
|
|
if (!strtoffset && param) {
|
|
action = CODEC_ACTION_SEEK_TIME;
|
|
}
|
|
|
|
goto next_page;
|
|
|
|
while (1) {
|
|
if (action == CODEC_ACTION_NULL)
|
|
action = ci->get_command(¶m);
|
|
|
|
if (action != CODEC_ACTION_NULL) {
|
|
if (action == CODEC_ACTION_HALT)
|
|
break;
|
|
|
|
if (action == CODEC_ACTION_SEEK_TIME) {
|
|
if (st != NULL) {
|
|
/* calculate granule to seek to (including seek rewind) */
|
|
seek_target = (48LL * param) + header.preskip;
|
|
skip = MIN(seek_target, SEEK_REWIND);
|
|
seek_target -= skip;
|
|
|
|
LOGF("Opus seek page:%lld,%lld,%ld\n",
|
|
seek_target, page_granule, (long)param);
|
|
speex_seek_page_granule(seek_target, page_granule, &oy, &os);
|
|
}
|
|
|
|
ci->set_elapsed(param);
|
|
ci->seek_complete();
|
|
}
|
|
|
|
action = CODEC_ACTION_NULL;
|
|
}
|
|
|
|
next_page:
|
|
/*Get the ogg buffer for writing*/
|
|
if (get_more_data(&oy) < 1) {
|
|
goto done;
|
|
}
|
|
|
|
/* Loop for all complete pages we got (most likely only one) */
|
|
while (ogg_sync_pageout(&oy, &og) == 1) {
|
|
if (stream_init == 0) {
|
|
ogg_stream_init(&os, ogg_page_serialno(&og));
|
|
stream_init = 1;
|
|
}
|
|
|
|
/* Add page to the bitstream */
|
|
ogg_stream_pagein(&os, &og);
|
|
|
|
page_granule = ogg_page_granulepos(&og);
|
|
granule_pos = page_granule;
|
|
|
|
/* Do this to avoid allocating space for huge comment packets
|
|
(embedded Album Art) */
|
|
if(os.packetno == 1 && ogg_stream_packetpeek(&os, &op) != 1){
|
|
ogg_sync_reset(&oy);
|
|
}
|
|
|
|
while ((ogg_stream_packetout(&os, &op) == 1) && !op.e_o_s) {
|
|
if (op.packetno == 0){
|
|
/* identification header */
|
|
|
|
if (opus_header_parse(op.packet, op.bytes, &header) == 0) {
|
|
LOGF("Could not parse header");
|
|
goto done;
|
|
}
|
|
skip = header.preskip;
|
|
|
|
st = opus_decoder_create(sample_rate, header.channels, &ret);
|
|
if (ret != OPUS_OK) {
|
|
LOGF("opus_decoder_create failed %d", ret);
|
|
goto done;
|
|
}
|
|
LOGF("Decoder inited");
|
|
|
|
codec_set_replaygain(ci->id3);
|
|
|
|
opus_decoder_ctl(st, OPUS_SET_GAIN(header.gain));
|
|
|
|
ci->configure(DSP_SET_FREQUENCY, sample_rate);
|
|
ci->configure(DSP_SET_SAMPLE_DEPTH, 16);
|
|
ci->configure(DSP_SET_STEREO_MODE, (header.channels == 2) ?
|
|
STEREO_INTERLEAVED : STEREO_MONO);
|
|
|
|
} else if (op.packetno == 1) {
|
|
/* Comment header */
|
|
} else {
|
|
if (strtoffset) {
|
|
ci->seek_buffer(strtoffset);
|
|
ogg_sync_reset(&oy);
|
|
strtoffset = 0;
|
|
break;//next page
|
|
}
|
|
|
|
/* report progress */
|
|
ci->set_elapsed((granule_pos - header.preskip) / 48);
|
|
|
|
/* Decode audio packets */
|
|
ret = opus_decode(st, op.packet, op.bytes, output, MAX_FRAME_SIZE, 0);
|
|
|
|
if (ret > 0) {
|
|
if (skip > 0) {
|
|
if (ret <= skip) {
|
|
/* entire output buffer is skipped */
|
|
skip -= ret;
|
|
ret = 0;
|
|
} else {
|
|
/* part of output buffer is played */
|
|
ret -= skip;
|
|
ci->pcmbuf_insert(&output[skip * header.channels], NULL, ret);
|
|
skip = 0;
|
|
}
|
|
} else {
|
|
/* entire buffer is played */
|
|
ci->pcmbuf_insert(output, NULL, ret);
|
|
}
|
|
granule_pos += ret;
|
|
} else {
|
|
if (ret < 0) {
|
|
LOGF("opus_decode failed %d", ret);
|
|
goto done;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
LOGF("Returned OK");
|
|
error = CODEC_OK;
|
|
done:
|
|
ogg_malloc_destroy();
|
|
return error;
|
|
}
|
|
|