6117ffdde5
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29913 a1c6a512-1295-4272-9138-f99709370657
200 lines
7.4 KiB
C
200 lines
7.4 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2009 Mohamed Tarek
|
|
*
|
|
* 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 <string.h>
|
|
|
|
#include "logf.h"
|
|
#include "codeclib.h"
|
|
#include "inttypes.h"
|
|
#include "libcook/cook.h"
|
|
|
|
CODEC_HEADER
|
|
|
|
static RMContext rmctx IBSS_ATTR_COOK_LARGE_IRAM;
|
|
static RMPacket pkt IBSS_ATTR_COOK_LARGE_IRAM;
|
|
static COOKContext q IBSS_ATTR;
|
|
static int32_t rm_outbuf[2048] IBSS_ATTR_COOK_LARGE_IRAM MEM_ALIGN_ATTR;
|
|
|
|
static void init_rm(RMContext *rmctx)
|
|
{
|
|
memcpy(rmctx, (void*)(( (intptr_t)ci->id3->id3v2buf + 3 ) &~ 3), sizeof(RMContext));
|
|
}
|
|
|
|
/* this is the codec entry point */
|
|
enum codec_status codec_main(enum codec_entry_call_reason reason)
|
|
{
|
|
/* Nothing to do */
|
|
return CODEC_OK;
|
|
(void)reason;
|
|
}
|
|
|
|
/* this is called for each file to process */
|
|
enum codec_status codec_run(void)
|
|
{
|
|
static size_t buff_size;
|
|
int datasize, res, consumed, i, time_offset;
|
|
uint8_t *bit_buffer;
|
|
uint16_t fs,sps,h;
|
|
uint32_t packet_count;
|
|
int scrambling_unit_size, num_units;
|
|
size_t resume_offset;
|
|
intptr_t param = 0;
|
|
enum codec_command_action action = CODEC_ACTION_NULL;
|
|
|
|
if (codec_init()) {
|
|
DEBUGF("codec init failed\n");
|
|
return CODEC_ERROR;
|
|
}
|
|
|
|
resume_offset = ci->id3->offset;
|
|
|
|
codec_set_replaygain(ci->id3);
|
|
ci->memset(&rmctx,0,sizeof(RMContext));
|
|
ci->memset(&pkt,0,sizeof(RMPacket));
|
|
ci->memset(&q,0,sizeof(COOKContext));
|
|
|
|
ci->seek_buffer(0);
|
|
|
|
init_rm(&rmctx);
|
|
|
|
ci->configure(DSP_SET_FREQUENCY, ci->id3->frequency);
|
|
/* cook's sample representation is 21.11
|
|
* DSP_SET_SAMPLE_DEPTH = 11 (FRACT) + 16 (NATIVE) - 1 (SIGN) = 26 */
|
|
ci->configure(DSP_SET_SAMPLE_DEPTH, 26);
|
|
ci->configure(DSP_SET_STEREO_MODE, rmctx.nb_channels == 1 ?
|
|
STEREO_MONO : STEREO_NONINTERLEAVED);
|
|
|
|
packet_count = rmctx.nb_packets;
|
|
rmctx.audio_framesize = rmctx.block_align;
|
|
rmctx.block_align = rmctx.sub_packet_size;
|
|
fs = rmctx.audio_framesize;
|
|
sps= rmctx.block_align;
|
|
h = rmctx.sub_packet_h;
|
|
scrambling_unit_size = h*fs;
|
|
|
|
res =cook_decode_init(&rmctx, &q);
|
|
if(res < 0) {
|
|
DEBUGF("failed to initialize cook decoder\n");
|
|
return CODEC_ERROR;
|
|
}
|
|
|
|
/* check for a mid-track resume and force a seek time accordingly */
|
|
if(resume_offset > rmctx.data_offset + DATA_HEADER_SIZE) {
|
|
resume_offset -= rmctx.data_offset + DATA_HEADER_SIZE;
|
|
num_units = (int)resume_offset / scrambling_unit_size;
|
|
/* put number of subpackets to skip in resume_offset */
|
|
resume_offset /= (sps + PACKET_HEADER_SIZE);
|
|
param = (int)resume_offset * ((sps * 8 * 1000)/rmctx.bit_rate);
|
|
action = CODEC_ACTION_SEEK_TIME;
|
|
}
|
|
|
|
ci->set_elapsed(0);
|
|
ci->advance_buffer(rmctx.data_offset + DATA_HEADER_SIZE);
|
|
|
|
/* The main decoder loop */
|
|
seek_start :
|
|
while(packet_count)
|
|
{
|
|
bit_buffer = (uint8_t *) ci->request_buffer(&buff_size, scrambling_unit_size);
|
|
consumed = rm_get_packet(&bit_buffer, &rmctx, &pkt);
|
|
if(consumed < 0) {
|
|
DEBUGF("rm_get_packet failed\n");
|
|
return CODEC_ERROR;
|
|
}
|
|
|
|
for(i = 0; i < rmctx.audio_pkt_cnt*(fs/sps) ; i++)
|
|
{
|
|
if (action == CODEC_ACTION_NULL)
|
|
action = ci->get_command(¶m);
|
|
|
|
if (action == CODEC_ACTION_HALT)
|
|
return CODEC_OK;
|
|
|
|
if (action == CODEC_ACTION_SEEK_TIME) {
|
|
/* Do not allow seeking beyond the file's length */
|
|
if ((unsigned) param > ci->id3->length) {
|
|
ci->set_elapsed(ci->id3->length);
|
|
ci->seek_complete();
|
|
return CODEC_OK;
|
|
}
|
|
|
|
ci->seek_buffer(rmctx.data_offset + DATA_HEADER_SIZE);
|
|
packet_count = rmctx.nb_packets;
|
|
rmctx.audio_pkt_cnt = 0;
|
|
rmctx.frame_number = 0;
|
|
|
|
/* Seek to the start of the track */
|
|
if (param == 0) {
|
|
ci->set_elapsed(0);
|
|
ci->seek_complete();
|
|
action = CODEC_ACTION_NULL;
|
|
goto seek_start;
|
|
}
|
|
num_units = (param/(sps*1000*8/rmctx.bit_rate))/(h*(fs/sps));
|
|
ci->seek_buffer(rmctx.data_offset + DATA_HEADER_SIZE + consumed * num_units);
|
|
bit_buffer = (uint8_t *) ci->request_buffer(&buff_size, scrambling_unit_size);
|
|
consumed = rm_get_packet(&bit_buffer, &rmctx, &pkt);
|
|
if(consumed < 0) {
|
|
DEBUGF("rm_get_packet failed\n");
|
|
ci->seek_complete();
|
|
return CODEC_ERROR;
|
|
}
|
|
packet_count = rmctx.nb_packets - rmctx.audio_pkt_cnt * num_units;
|
|
rmctx.frame_number = (param/(sps*1000*8/rmctx.bit_rate));
|
|
while(rmctx.audiotimestamp > (unsigned) param) {
|
|
rmctx.audio_pkt_cnt = 0;
|
|
ci->seek_buffer(rmctx.data_offset + DATA_HEADER_SIZE + consumed * (num_units-1));
|
|
bit_buffer = (uint8_t *) ci->request_buffer(&buff_size, scrambling_unit_size);
|
|
consumed = rm_get_packet(&bit_buffer, &rmctx, &pkt);
|
|
packet_count += rmctx.audio_pkt_cnt;
|
|
num_units--;
|
|
}
|
|
time_offset = param - rmctx.audiotimestamp;
|
|
i = (time_offset/((sps * 8 * 1000)/rmctx.bit_rate));
|
|
ci->set_elapsed(rmctx.audiotimestamp+(1000*8*sps/rmctx.bit_rate)*i);
|
|
ci->seek_complete();
|
|
}
|
|
|
|
action = CODEC_ACTION_NULL;
|
|
|
|
res = cook_decode_frame(&rmctx,&q, rm_outbuf, &datasize, pkt.frames[i], rmctx.block_align);
|
|
rmctx.frame_number++;
|
|
|
|
/* skip the first two frames; no valid audio */
|
|
if(rmctx.frame_number < 3) continue;
|
|
|
|
if(res != rmctx.block_align) {
|
|
DEBUGF("codec error\n");
|
|
return CODEC_ERROR;
|
|
}
|
|
|
|
ci->pcmbuf_insert(rm_outbuf,
|
|
rm_outbuf+q.samples_per_channel,
|
|
q.samples_per_channel);
|
|
ci->set_elapsed(rmctx.audiotimestamp+(1000*8*sps/rmctx.bit_rate)*i);
|
|
}
|
|
packet_count -= rmctx.audio_pkt_cnt;
|
|
rmctx.audio_pkt_cnt = 0;
|
|
ci->advance_buffer(consumed);
|
|
}
|
|
|
|
return CODEC_OK;
|
|
}
|