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https://github.com/Rockbox/rockbox.git
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3a57f2f721
Most of the churn here occurs because 'filesize' is one of the redefined filesystem functions, but some of the structs used by the native FS code also include a 'filesize' member variable which gets renamed by the macro in some but not all source files. It's easier to rename 'filesize()' to 'ffilesize()' rather than try to clean up the macro mess or renaming the struct members. There is weirdness with root_realpath() which now breaks on native builds because it was assumed to be unprefixed there. dir_get_info() was unprefixed everywhere but this just seems inconsistent; make it follow the FS_PREFIX() convention too. Change-Id: Ic3700c6234ea45f32679c1a8429d70fdb8f4088a
120 lines
4.4 KiB
C
120 lines
4.4 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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*
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* Copyright (C) 2010 Yoshihisa Uchida
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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 <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <inttypes.h>
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#include "platform.h"
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#include "metadata.h"
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#include "metadata_common.h"
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#include "metadata_parsers.h"
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#include "logf.h"
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#define TTA1_SIGN 0x31415454
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#define TTA_HEADER_ID 0
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#define TTA_HEADER_AUDIO_FORMAT (TTA_HEADER_ID + sizeof(unsigned int))
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#define TTA_HEADER_NUM_CHANNELS (TTA_HEADER_AUDIO_FORMAT + sizeof(unsigned short))
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#define TTA_HEADER_BITS_PER_SAMPLE (TTA_HEADER_NUM_CHANNELS + sizeof(unsigned short))
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#define TTA_HEADER_SAMPLE_RATE (TTA_HEADER_BITS_PER_SAMPLE + sizeof(unsigned short))
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#define TTA_HEADER_DATA_LENGTH (TTA_HEADER_SAMPLE_RATE + sizeof(unsigned int))
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#define TTA_HEADER_CRC32 (TTA_HEADER_DATA_LENGTH + sizeof(unsigned int))
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#define TTA_HEADER_SIZE (TTA_HEADER_CRC32 + sizeof(unsigned int))
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#define TTA_HEADER_GETTER_ID(x) get_long_le(x)
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#define TTA_HEADER_GETTER_AUDIO_FORMAT(x) get_short_le(x)
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#define TTA_HEADER_GETTER_NUM_CHANNELS(x) get_short_le(x)
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#define TTA_HEADER_GETTER_BITS_PER_SAMPLE(x) get_short_le(x)
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#define TTA_HEADER_GETTER_SAMPLE_RATE(x) get_long_le(x)
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#define TTA_HEADER_GETTER_DATA_LENGTH(x) get_long_le(x)
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#define TTA_HEADER_GETTER_CRC32(x) get_long_le(x)
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#define GET_HEADER(x, tag) TTA_HEADER_GETTER_ ## tag((x) + TTA_HEADER_ ## tag)
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static void read_id3_tags(int fd, struct mp3entry* id3)
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{
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id3->title = NULL;
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id3->filesize = ffilesize(fd);
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id3->id3v2len = getid3v2len(fd);
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id3->vbr = false; /* All TTA files are CBR */
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/* first get id3v2 tags. if no id3v2 tags ware found, get id3v1 tags */
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if (id3->id3v2len)
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{
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setid3v2title(fd, id3);
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id3->first_frame_offset = id3->id3v2len;
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return;
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}
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setid3v1title(fd, id3);
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}
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bool get_tta_metadata(int fd, struct mp3entry* id3)
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{
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unsigned char ttahdr[TTA_HEADER_SIZE];
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unsigned int datasize;
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unsigned int origsize;
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int bps;
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lseek(fd, 0, SEEK_SET);
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/* read id3 tags */
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read_id3_tags(fd, id3);
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lseek(fd, id3->id3v2len, SEEK_SET);
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/* read TTA header */
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if (read(fd, ttahdr, TTA_HEADER_SIZE) < 0)
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return false;
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/* check for TTA3 signature */
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if ((GET_HEADER(ttahdr, ID)) != TTA1_SIGN)
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return false;
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/* skip check CRC */
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unsigned short channels = (GET_HEADER(ttahdr, NUM_CHANNELS));
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id3->frequency = (GET_HEADER(ttahdr, SAMPLE_RATE));
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id3->length = ((GET_HEADER(ttahdr, DATA_LENGTH)) / id3->frequency) * 1000LL;
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bps = (GET_HEADER(ttahdr, BITS_PER_SAMPLE));
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datasize = id3->filesize - id3->first_frame_offset;
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origsize = (GET_HEADER(ttahdr, DATA_LENGTH)) * ((bps + 7) / 8) * channels;
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id3->bitrate = (int) ((uint64_t) datasize * id3->frequency * channels * bps
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/ (origsize * 1000LL));
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/* output header info (for debug) */
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DEBUGF("TTA header info ----\n");
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DEBUGF("id: %x\n", (unsigned int)(GET_HEADER(ttahdr, ID)));
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DEBUGF("channels: %d\n", channels);
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DEBUGF("frequency: %ld\n", id3->frequency);
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DEBUGF("length: %ld\n", id3->length);
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DEBUGF("bitrate: %d\n", id3->bitrate);
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DEBUGF("bits per sample: %d\n", bps);
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DEBUGF("compressed size: %d\n", datasize);
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DEBUGF("original size: %d\n", origsize);
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DEBUGF("id3----\n");
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DEBUGF("artist: %s\n", id3->artist);
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DEBUGF("title: %s\n", id3->title);
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DEBUGF("genre: %s\n", id3->genre_string);
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return true;
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}
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