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 --- apps/metadata/vorbis.c | 381 ------------------------------------------------- 1 file changed, 381 deletions(-) delete mode 100644 apps/metadata/vorbis.c (limited to 'apps/metadata/vorbis.c') diff --git a/apps/metadata/vorbis.c b/apps/metadata/vorbis.c deleted file mode 100644 index 58bd781873..0000000000 --- a/apps/metadata/vorbis.c +++ /dev/null @@ -1,381 +0,0 @@ -/*************************************************************************** - * __________ __ ___. - * 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 -#include -#include -#include -#include - -#include "system.h" -#include "metadata.h" -#include "metadata_common.h" -#include "metadata_parsers.h" -#include "structec.h" - -/* Define LOGF_ENABLE to enable logf output in this file */ -/*#define LOGF_ENABLE*/ -#include "logf.h" - -struct file -{ - int fd; - bool packet_ended; - long packet_remaining; -}; - - -/* Read an Ogg page header. file->packet_remaining is set to the size of the - * first packet on the page; file->packet_ended is set to true if the packet - * ended on the current page. Returns true if the page header was - * successfully read. - */ -static bool file_read_page_header(struct file* file) -{ - unsigned char buffer[64]; - ssize_t table_left; - - /* Size of page header without segment table */ - if (read(file->fd, buffer, 27) != 27) - { - return false; - } - - if (memcmp("OggS", buffer, 4)) - { - return false; - } - - /* Skip pattern (4), version (1), flags (1), granule position (8), - * serial (4), pageno (4), checksum (4) - */ - table_left = buffer[26]; - file->packet_remaining = 0; - - /* Read segment table for the first packet */ - do - { - ssize_t count = MIN(sizeof(buffer), (size_t) table_left); - int i; - - if (read(file->fd, buffer, count) < count) - { - return false; - } - - table_left -= count; - - for (i = 0; i < count; i++) - { - file->packet_remaining += buffer[i]; - - if (buffer[i] < 255) - { - file->packet_ended = true; - - /* Skip remainder of the table */ - if (lseek(file->fd, table_left, SEEK_CUR) < 0) - { - return false; - } - - table_left = 0; - break; - } - } - } - while (table_left > 0); - - return true; -} - - -/* Read (up to) buffer_size of data from the file. If buffer is NULL, just - * skip ahead buffer_size bytes (like lseek). Returns number of bytes read, - * 0 if there is no more data to read (in the packet or the file), < 0 if a - * read error occurred. - */ -static ssize_t file_read(struct file* file, void* buffer, size_t buffer_size) -{ - ssize_t done = 0; - ssize_t count = -1; - - do - { - if (file->packet_remaining <= 0) - { - if (file->packet_ended) - { - break; - } - - if (!file_read_page_header(file)) - { - count = -1; - break; - } - } - - count = MIN(buffer_size, (size_t) file->packet_remaining); - - if (buffer) - { - count = read(file->fd, buffer, count); - } - else - { - if (lseek(file->fd, count, SEEK_CUR) < 0) - { - count = -1; - } - } - - if (count <= 0) - { - break; - } - - if (buffer) - { - buffer += count; - } - - buffer_size -= count; - done += count; - file->packet_remaining -= count; - } - while (buffer_size > 0); - - return (count < 0 ? count : done); -} - - -/* Read an int32 from file. Returns false if a read error occurred. - */ -static bool file_read_int32(struct file* file, int32_t* value) -{ - char buf[sizeof(int32_t)]; - - if (file_read(file, buf, sizeof(buf)) < (ssize_t) sizeof(buf)) - { - return false; - } - - *value = get_long_le(buf); - return true; -} - - -/* Read a string from the file. Read up to buffer_size bytes, or, if eos - * != -1, until the eos character is found (eos is not stored in buf, - * unless it is nil). Writes up to buffer_size chars to buf, always - * terminating with a nil. Returns number of chars read or < 0 if a read - * error occurred. - * - * Unfortunately this is a slightly modified copy of read_string() in - * metadata_common.c... - */ -static long file_read_string(struct file* file, char* buffer, - long buffer_size, int eos, long size) -{ - long read_bytes = 0; - - while (size > 0) - { - char c; - - if (file_read(file, &c, 1) != 1) - { - read_bytes = -1; - break; - } - - read_bytes++; - size--; - - if ((eos != -1) && (eos == (unsigned char) c)) - { - break; - } - - if (buffer_size > 1) - { - *buffer++ = c; - buffer_size--; - } - else if (eos == -1) - { - /* No point in reading any more, skip remaining data */ - if (file_read(file, NULL, size) < 0) - { - read_bytes = -1; - } - else - { - read_bytes += size; - } - - break; - } - } - - *buffer = 0; - return read_bytes; -} - - -/* Init struct file for reading from fd. type is the AFMT_* codec type of - * the file, and determines if Ogg pages are to be read. remaining is the - * max amount to read if codec type is FLAC; it is ignored otherwise. - * Returns true if the file was successfully initialized. - */ -static bool file_init(struct file* file, int fd, int type, int remaining) -{ - memset(file, 0, sizeof(*file)); - file->fd = fd; - - if (type == AFMT_OGG_VORBIS || type == AFMT_SPEEX) - { - if (!file_read_page_header(file)) - { - return false; - } - } - - if (type == AFMT_OGG_VORBIS) - { - char buffer[7]; - - /* Read packet header (type and id string) */ - if (file_read(file, buffer, sizeof(buffer)) < (ssize_t) sizeof(buffer)) - { - return false; - } - - /* The first byte of a packet is the packet type; comment packets - * are type 3. - */ - if (buffer[0] != 3) - { - return false; - } - } - else if (type == AFMT_FLAC) - { - file->packet_remaining = remaining; - file->packet_ended = true; - } - - return true; -} - - -/* Read the items in a Vorbis comment packet. For Ogg files, the file must - * be located on a page start, for other files, the beginning of the comment - * data (i.e., the vendor string length). Returns total size of the - * comments, or 0 if there was a read error. - */ -long read_vorbis_tags(int fd, struct mp3entry *id3, - long tag_remaining) -{ - struct file file; - char *buf = id3->id3v2buf; - int32_t comment_count; - int32_t len; - long comment_size = 0; - int buf_remaining = sizeof(id3->id3v2buf) + sizeof(id3->id3v1buf); - int i; - - if (!file_init(&file, fd, id3->codectype, tag_remaining)) - { - return 0; - } - - /* Skip vendor string */ - - if (!file_read_int32(&file, &len) || (file_read(&file, NULL, len) < 0)) - { - return 0; - } - - if (!file_read_int32(&file, &comment_count)) - { - return 0; - } - - comment_size += 4 + len + 4; - - for (i = 0; i < comment_count && file.packet_remaining > 0; i++) - { - char name[TAG_NAME_LENGTH]; - int32_t read_len; - - if (!file_read_int32(&file, &len)) - { - return 0; - } - - comment_size += 4 + len; - read_len = file_read_string(&file, name, sizeof(name), '=', len); - - if (read_len < 0) - { - return 0; - } - - len -= read_len; - read_len = file_read_string(&file, id3->path, sizeof(id3->path), -1, len); - - if (read_len < 0) - { - return 0; - } - - logf("Vorbis comment %d: %s=%s", i, name, id3->path); - - /* Is it an embedded cuesheet? */ - if (!strcasecmp(name, "CUESHEET")) - { - id3->has_embedded_cuesheet = true; - id3->embedded_cuesheet.pos = lseek(file.fd, 0, SEEK_CUR) - read_len; - id3->embedded_cuesheet.size = len; - id3->embedded_cuesheet.encoding = CHAR_ENC_UTF_8; - } - else - { - len = parse_tag(name, id3->path, id3, buf, buf_remaining, - TAGTYPE_VORBIS); - } - - buf += len; - buf_remaining -= len; - } - - /* Skip to the end of the block (needed by FLAC) */ - if (file.packet_remaining) - { - if (file_read(&file, NULL, file.packet_remaining) < 0) - { - return 0; - } - } - - return comment_size; -} -- cgit v1.2.3