From b5716df4cb2837bbbc42195cf1aefcf03e21d6a6 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Fri, 24 Jun 2011 01:25:21 -0400 Subject: Build librbcodec with DSP and metadata. All associated files are moved to /lib/rbcodec. Change-Id: I572ddd2b8a996aae1e98c081d06b1ed356dce222 --- lib/rbcodec/metadata/asap.c | 254 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 254 insertions(+) create mode 100644 lib/rbcodec/metadata/asap.c (limited to 'lib/rbcodec/metadata/asap.c') diff --git a/lib/rbcodec/metadata/asap.c b/lib/rbcodec/metadata/asap.c new file mode 100644 index 0000000000..9e7f227031 --- /dev/null +++ b/lib/rbcodec/metadata/asap.c @@ -0,0 +1,254 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2008 Dominik Wenger + * + * 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 +#include +#include +#include +#include + +#include "system.h" +#include "metadata.h" +#include "metadata_common.h" +#include "metadata_parsers.h" +#include "rbunicode.h" +#include "debug.h" + +#define MAX_SONGS 32 + +static bool parse_dec(int *retval, const char *p, int minval, int maxval) +{ + int r = 0; + do { + char c = *p; + if (c >= '0' && c <= '9') + r = 10 * r + c - '0'; + else + return false; + if (r > maxval) + return false; + } while (*++p != '\0'); + if (r < minval) + return false; + *retval = r; + return true; +} + +static bool parse_text(char *retval, const char *p) +{ + int i; + if (*p != '"') + return false; + p++; + if (p[0] == '<' && p[1] == '?' && p[2] == '>' && p[3] == '"') + return true; + i = 0; + while (*p != '"') { + if (i >= 127) + return false; + if (*p == '\0') + return false; + retval[i++] = *p++; + } + retval[i] = '\0'; + return true; +} + +static int ASAP_ParseDuration(const char *s) +{ + int r; + if (*s < '0' || *s > '9') + return -1; + r = *s++ - '0'; + if (*s >= '0' && *s <= '9') + r = 10 * r + *s++ - '0'; + if (*s == ':') { + s++; + if (*s < '0' || *s > '5') + return -1; + r = 60 * r + (*s++ - '0') * 10; + if (*s < '0' || *s > '9') + return -1; + r += *s++ - '0'; + } + r *= 1000; + if (*s != '.') + return r; + s++; + if (*s < '0' || *s > '9') + return r; + r += 100 * (*s++ - '0'); + if (*s < '0' || *s > '9') + return r; + r += 10 * (*s++ - '0'); + if (*s < '0' || *s > '9') + return r; + r += *s - '0'; + return r; +} + +static bool read_asap_string(char* source, char** buf, char** buffer_end, char** dest) +{ + if(parse_text(*buf,source) == false) + return false; + + /* set dest pointer */ + *dest = *buf; + + /* move buf ptr */ + *buf += strlen(*buf)+1; + + /* check size */ + if(*buf >= *buffer_end) + { + DEBUGF("Buffer full\n"); + return false; + } + return true; +} + +static bool parse_sap_header(int fd, struct mp3entry* id3, int file_len) +{ + int module_index = 0; + int sap_signature = -1; + int duration_index = 0; + unsigned char cur_char = 0; + int i; + + /* set defaults */ + int numSongs = 1; + int defSong = 0; + int durations[MAX_SONGS]; + for (i = 0; i < MAX_SONGS; i++) + durations[i] = -1; + + /* use id3v2 buffer for our strings */ + char* buffer = id3->id3v2buf; + char* buffer_end = id3->id3v2buf + ID3V2_BUF_SIZE; + + /* parse file */ + while (1) + { + char line[256]; + char *p; + + if (module_index + 8 >= file_len) + return false; + /* read a char */ + read(fd,&cur_char,1); + /* end of header */ + if (cur_char == 0xff) + break; + + i = 0; + while (cur_char != 0x0d) + { + line[i++] = cur_char; + module_index++; + if (module_index >= file_len || (unsigned)i >= sizeof(line) - 1) + return false; + /* read a char */ + read(fd,&cur_char,1); + } + if (++module_index >= file_len ) + return false; + /* read a char */ + read(fd,&cur_char,1); + if ( cur_char != 0x0a) + return false; + + line[i] = '\0'; + for (p = line; *p != '\0'; p++) { + if (*p == ' ') { + *p++ = '\0'; + break; + } + } + + /* parse tags */ + if(strcmp(line, "SAP") == 0) + sap_signature = 1; + if (sap_signature == -1) + return false; + if (strcmp(line, "AUTHOR") == 0) + { + if(read_asap_string(p, &buffer, &buffer_end, &id3->artist) == false) + return false; + } + else if(strcmp(line, "NAME") == 0) + { + if(read_asap_string(p, &buffer, &buffer_end, &id3->title) == false) + return false; + } + else if(strcmp(line, "DATE") == 0) + { + if(read_asap_string(p, &buffer, &buffer_end, &id3->year_string) == false) + return false; + } + else if (strcmp(line, "SONGS") == 0) + { + if (parse_dec(&numSongs, p, 1, MAX_SONGS) == false ) + return false; + } + else if (strcmp(line, "DEFSONG") == 0) + { + if (parse_dec(&defSong, p, 0, MAX_SONGS) == false) + return false; + } + else if (strcmp(line, "TIME") == 0) + { + int durationTemp = ASAP_ParseDuration(p); + if (durationTemp < 0 || duration_index >= MAX_SONGS) + return false; + durations[duration_index++] = durationTemp; + } + } + + /* set length: */ + int length = durations[defSong]; + if (length < 0) + length = 180 * 1000; + id3->length = length; + + lseek(fd, 0, SEEK_SET); + return true; +} + + +bool get_asap_metadata(int fd, struct mp3entry* id3) +{ + + int filelength = filesize(fd); + + if(parse_sap_header(fd, id3, filelength) == false) + { + DEBUGF("parse sap header failed.\n"); + return false; + } + + id3->bitrate = 706; + id3->frequency = 44100; + + id3->vbr = false; + id3->filesize = filelength; + id3->genre_string = id3_get_num_genre(36); + + return true; +} -- cgit v1.2.3