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
156 lines
4.8 KiB
C
156 lines
4.8 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) 2009 Mohamed Tarek
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 <string.h>
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#include "logf.h"
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#include "codeclib.h"
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#include "inttypes.h"
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#include "libatrac/atrac3.h"
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CODEC_HEADER
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#define FRAMESIZE ci->id3->bytesperframe
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#define BITRATE ci->id3->bitrate
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static ATRAC3Context q IBSS_ATTR;
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/* this is the codec entry point */
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enum codec_status codec_main(enum codec_entry_call_reason reason)
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{
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/* Nothing to do */
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return CODEC_OK;
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(void)reason;
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}
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/* this is called for each file to process */
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enum codec_status codec_run(void)
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{
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static size_t buff_size;
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int datasize, res, frame_counter, total_frames, seek_frame_offset;
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uint8_t *bit_buffer;
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int elapsed = 0;
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size_t resume_offset;
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intptr_t param;
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long action;
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if (codec_init()) {
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DEBUGF("codec init failed\n");
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return CODEC_ERROR;
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}
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action = CODEC_ACTION_NULL;
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param = ci->id3->elapsed;
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resume_offset = ci->id3->offset;
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codec_set_replaygain(ci->id3);
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ci->memset(&q,0,sizeof(ATRAC3Context));
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ci->configure(DSP_SET_FREQUENCY, ci->id3->frequency);
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ci->configure(DSP_SET_SAMPLE_DEPTH, 17); /* Remark: atrac3 uses s15.0 by default, s15.2 was hacked. */
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ci->configure(DSP_SET_STEREO_MODE, ci->id3->channels == 1 ?
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STEREO_MONO : STEREO_NONINTERLEAVED);
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ci->seek_buffer(0);
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res = atrac3_decode_init(&q, ci->id3);
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if(res < 0) {
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DEBUGF("failed to initialize OMA atrac decoder\n");
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return CODEC_ERROR;
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}
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total_frames = (ci->id3->filesize - ci->id3->first_frame_offset) / FRAMESIZE;
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frame_counter = 0;
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/* check for a mid-track resume and force a seek time accordingly */
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if (resume_offset) {
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resume_offset -= MIN(resume_offset, ci->id3->first_frame_offset);
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/* calculate resume_offset in frames */
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param = (resume_offset/FRAMESIZE) * ((FRAMESIZE * 8)/BITRATE);
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}
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if ((unsigned long)param) {
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action = CODEC_ACTION_SEEK_TIME;
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}
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else {
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ci->set_elapsed(0);
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ci->seek_buffer(ci->id3->first_frame_offset);
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}
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/* The main decoder loop */
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while(frame_counter < total_frames)
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{
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if (action == CODEC_ACTION_NULL)
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action = ci->get_command(¶m);
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if (action == CODEC_ACTION_HALT)
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break;
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if (action == CODEC_ACTION_SEEK_TIME) {
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/* Do not allow seeking beyond the file's length */
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if ((unsigned long) param > ci->id3->length) {
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ci->set_elapsed(ci->id3->length);
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ci->seek_complete();
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break;
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}
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/* Seek to the start of the track */
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if (param == 0) {
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elapsed = 0;
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ci->set_elapsed(0);
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ci->seek_buffer(ci->id3->first_frame_offset);
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ci->seek_complete();
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action = CODEC_ACTION_NULL;
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continue;
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}
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seek_frame_offset = (param * BITRATE) / (8 * FRAMESIZE);
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frame_counter = seek_frame_offset;
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ci->seek_buffer(ci->id3->first_frame_offset + seek_frame_offset* FRAMESIZE);
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elapsed = param;
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ci->set_elapsed(elapsed);
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ci->seek_complete();
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}
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action = CODEC_ACTION_NULL;
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bit_buffer = (uint8_t *) ci->request_buffer(&buff_size, FRAMESIZE);
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res = atrac3_decode_frame(FRAMESIZE, &q, &datasize, bit_buffer, FRAMESIZE);
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if(res != (int)FRAMESIZE) {
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DEBUGF("codec error\n");
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return CODEC_ERROR;
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}
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if(datasize)
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ci->pcmbuf_insert(q.outSamples, q.outSamples + 1024,
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q.samples_per_frame / ci->id3->channels);
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elapsed += (FRAMESIZE * 8) / BITRATE;
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ci->set_elapsed(elapsed);
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ci->advance_buffer(FRAMESIZE);
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frame_counter++;
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}
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return CODEC_OK;
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}
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