6c868dd48f
Just use long so the compiler potentially doesn't complain about use of other values not in the enum. It's also the type used around the system for event ids. Increase min codec API version. No functional changes. Change-Id: If4419b42912f5e4ef673adcdeb69313e503f94cc
151 lines
4.8 KiB
C
151 lines
4.8 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2005 Dave Chapman
|
|
*
|
|
* 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 "libm4a/m4a.h"
|
|
#include "libalac/decomp.h"
|
|
|
|
CODEC_HEADER
|
|
|
|
/* The maximum buffer size handled. This amount of bytes is buffered for each
|
|
* frame. */
|
|
#define ALAC_BYTE_BUFFER_SIZE 32768
|
|
|
|
static int32_t outputbuffer[ALAC_MAX_CHANNELS][ALAC_BLOCKSIZE] IBSS_ATTR;
|
|
|
|
/* this is the codec entry point */
|
|
enum codec_status codec_main(enum codec_entry_call_reason reason)
|
|
{
|
|
if (reason == CODEC_LOAD) {
|
|
/* Generic codec initialisation */
|
|
ci->configure(DSP_SET_STEREO_MODE, STEREO_NONINTERLEAVED);
|
|
ci->configure(DSP_SET_SAMPLE_DEPTH, ALAC_OUTPUT_DEPTH-1);
|
|
}
|
|
|
|
return CODEC_OK;
|
|
}
|
|
|
|
/* this is called for each file to process */
|
|
enum codec_status codec_run(void)
|
|
{
|
|
size_t n;
|
|
demux_res_t demux_res;
|
|
stream_t input_stream;
|
|
uint32_t samplesdone;
|
|
uint32_t elapsedtime;
|
|
int samplesdecoded;
|
|
unsigned int i;
|
|
unsigned char* buffer;
|
|
alac_file alac;
|
|
intptr_t param;
|
|
|
|
/* Clean and initialize decoder structures */
|
|
memset(&demux_res , 0, sizeof(demux_res));
|
|
if (codec_init()) {
|
|
LOGF("ALAC: Error initialising codec\n");
|
|
return CODEC_ERROR;
|
|
}
|
|
|
|
ci->configure(DSP_SET_FREQUENCY, ci->id3->frequency);
|
|
codec_set_replaygain(ci->id3);
|
|
|
|
ci->seek_buffer(0);
|
|
|
|
stream_create(&input_stream,ci);
|
|
|
|
/* Read resume info before calling qtmovie_read. */
|
|
elapsedtime = ci->id3->elapsed;
|
|
samplesdone = ci->id3->offset;
|
|
|
|
/* if qtmovie_read returns successfully, the stream is up to
|
|
* the movie data, which can be used directly by the decoder */
|
|
if (!qtmovie_read(&input_stream, &demux_res)) {
|
|
LOGF("ALAC: Error initialising file\n");
|
|
return CODEC_ERROR;
|
|
}
|
|
|
|
/* initialise the sound converter */
|
|
alac_set_info(&alac, demux_res.codecdata);
|
|
|
|
/* Set i for first frame, seek to desired sample position for resuming. */
|
|
i=0;
|
|
|
|
if (elapsedtime || samplesdone) {
|
|
if (samplesdone) {
|
|
samplesdone =
|
|
(uint32_t)((uint64_t)samplesdone*ci->id3->frequency /
|
|
(ci->id3->bitrate*128));
|
|
}
|
|
else {
|
|
samplesdone = (elapsedtime/10) * (ci->id3->frequency/100);
|
|
}
|
|
|
|
if (!m4a_seek(&demux_res, &input_stream, samplesdone,
|
|
&samplesdone, (int*) &i)) {
|
|
samplesdone = 0;
|
|
}
|
|
}
|
|
|
|
elapsedtime = (samplesdone*10)/(ci->id3->frequency/100);
|
|
ci->set_elapsed(elapsedtime);
|
|
|
|
/* The main decoding loop */
|
|
while (i < demux_res.num_sample_byte_sizes) {
|
|
long action = ci->get_command(¶m);
|
|
|
|
if (action == CODEC_ACTION_HALT)
|
|
break;
|
|
|
|
/* Deal with any pending seek requests */
|
|
if (action == CODEC_ACTION_SEEK_TIME) {
|
|
if (m4a_seek(&demux_res, &input_stream,
|
|
(param/10) * (ci->id3->frequency/100),
|
|
&samplesdone, (int *)&i)) {
|
|
elapsedtime=(samplesdone*10)/(ci->id3->frequency/100);
|
|
}
|
|
ci->set_elapsed(elapsedtime);
|
|
ci->seek_complete();
|
|
}
|
|
|
|
/* Request the required number of bytes from the input buffer */
|
|
buffer=ci->request_buffer(&n, ALAC_BYTE_BUFFER_SIZE);
|
|
|
|
/* Decode one block - returned samples will be host-endian */
|
|
samplesdecoded=alac_decode_frame(&alac, buffer, outputbuffer, ci->yield);
|
|
ci->yield();
|
|
|
|
/* Advance codec buffer by amount of consumed bytes */
|
|
ci->advance_buffer(alac.bytes_consumed);
|
|
|
|
/* Output the audio */
|
|
ci->pcmbuf_insert(outputbuffer[0], outputbuffer[1], samplesdecoded);
|
|
|
|
/* Update the elapsed-time indicator */
|
|
samplesdone+=samplesdecoded;
|
|
elapsedtime=(samplesdone*10)/(ci->id3->frequency/100);
|
|
ci->set_elapsed(elapsedtime);
|
|
|
|
i++;
|
|
}
|
|
|
|
LOGF("ALAC: Decoded %lu samples\n",(unsigned long)samplesdone);
|
|
return CODEC_OK;
|
|
}
|