mirror of
https://github.com/claunia/flac.git
synced 2025-12-16 18:54:26 +00:00
beginning of rewrite of metaflac to the new metadata interface
This commit is contained in:
Josh Coalson
@@ -16,83 +16,256 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* WATCHOUT - this is meant to be very lightweight an not even dependent
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* on libFLAC, so there are a couple places where FLAC__* variables are
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* duplicated here. Look for 'DUPLICATE:' in comments.
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*/
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/*@@@
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more powerful operations yet to add:
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add a seektable, using same args as flac
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*/
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "FLAC/metadata.h"
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#include <ctype.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* we only use some typedefs, #defines, and enums from here: */
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#include "FLAC/all.h"
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static const char *sync_string_ = "fLaC"; /* DUPLICATE:FLAC__STREAM_SYNC_STRING */
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static const char *metadata_type_string_[] = { /* DUPLICATE:FLAC__MetaDataTypeString */
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"STREAMINFO",
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"PADDING",
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"APPLICATION",
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"SEEKTABLE"
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#if HAVE_GETOPT_LONG
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# include <getopt.h>
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#else
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# include "share/getopt.h"
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#endif
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/* getopt format struct; note we don't use short options so we just
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set the 'val' field to 1 everywhere to indicate a valid option. */
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static struct option long_options_[] = {
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/* global options */
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{ "preserve-modtime", 0, 0, 1 },
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{ "with-filename", 0, 0, 1 },
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{ "no-filename", 0, 0, 1 },
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{ "dont-use-padding", 0, 0, 1 },
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/* shorthand operations */
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{ "show-md5sum", 0, 0, 1 },
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{ "show-min-blocksize", 0, 0, 1 },
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{ "show-max-blocksize", 0, 0, 1 },
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{ "show-min-framesize", 0, 0, 1 },
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{ "show-max-framesize", 0, 0, 1 },
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{ "show-sample-rate", 0, 0, 1 },
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{ "show-channels", 0, 0, 1 },
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{ "show-bps", 0, 0, 1 },
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{ "show-total-samples", 0, 0, 1 },
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{ "show-vc-vendor", 0, 0, 1 },
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{ "show-vc-field", 1, 0, 1 },
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{ "remove-vc-all", 0, 0, 1 },
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{ "remove-vc-field", 1, 0, 1 },
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{ "remove-vc-firstfield", 1, 0, 1 },
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{ "set-vc-field", 1, 0, 1 },
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/* major operations */
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{ "list", 0, 0, 1 },
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{ "append", 0, 0, 1 },
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{ "remove", 0, 0, 1 },
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{ "remove-all", 0, 0, 1 },
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{ "merge-padding", 0, 0, 1 },
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{ "sort-padding", 0, 0, 1 },
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{ "block-number", 1, 0, 1 },
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{ "block-type", 1, 0, 1 },
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{ "except-block-type", 1, 0, 1 },
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{ "data-format", 1, 0, 1 },
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{ "application-data-format", 1, 0, 1 },
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{ "from-file", 1, 0, 1 },
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{0, 0, 0, 0}
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};
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static const unsigned SEEKPOINT_LEN_ = 18; /* DUPLICATE:FLAC__STREAM_METADATA_SEEKPOINT_LENGTH */
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static int usage(const char *message, ...);
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static FLAC__bool list(FILE *f, FLAC__bool verbose);
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static FLAC__uint32 unpack_uint32(FLAC__byte *b, unsigned bytes);
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static FLAC__uint64 unpack_uint64(FLAC__byte *b, unsigned bytes);
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typedef enum {
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OP__SHOW_MD5SUM,
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OP__SHOW_MIN_BLOCKSIZE,
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OP__SHOW_MAX_BLOCKSIZE,
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OP__SHOW_MIN_FRAMESIZE,
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OP__SHOW_MAX_FRAMESIZE,
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OP__SHOW_SAMPLE_RATE,
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OP__SHOW_CHANNELS,
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OP__SHOW_BPS,
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OP__SHOW_TOTAL_SAMPLES,
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OP__SHOW_VC_VENDOR,
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OP__SHOW_VC_FIELD,
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OP__REMOVE_VC_FIELD,
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OP__REMOVE_VC_FIRSTFIELD,
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OP__SET_VC_FIELD,
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OP__LIST,
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OP__APPEND,
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OP__REMOVE,
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OP__REMOVE_ALL,
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OP__MERGE_PADDING,
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OP__SORT_PADDING,
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OP__BLOCK_NUMBER,
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OP__BLOCK_TYPE,
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OP__EXCEPT_BLOCK_TYPE,
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OP__DATA_FORMAT,
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OP__APPLICATION_DATA_FORMAT,
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OP__FROM_FILE
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} OperationType;
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typedef struct {
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int dummy;
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} Argument_VcFieldName;
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typedef struct {
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int dummy;
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} Argument_VcField;
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typedef struct {
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int dummy;
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} Argument_BlockNumber;
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typedef struct {
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int dummy;
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} Argument_BlockType;
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typedef struct {
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int dummy;
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} Argument_DataFormat;
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typedef struct {
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int dummy;
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} Argument_ApplicationDataFormat;
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typedef struct {
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int dummy;
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} Argument_FromFile;
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typedef struct {
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OperationType operation;
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union {
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Argument_VcFieldName show_vc_field;
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Argument_VcFieldName remove_vc_field;
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Argument_VcFieldName remove_vc_firstfield;
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Argument_VcField set_vc_field;
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Argument_BlockNumber block_number;
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Argument_BlockType block_type;
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Argument_BlockType except_block_type;
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Argument_DataFormat data_format;
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Argument_ApplicationDataFormat application_data_format;
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Argument_FromFile from_file;
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} argument;
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} Operation;
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typedef struct {
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FLAC__bool preserve_modtime;
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FLAC__bool prefix_with_filename;
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FLAC__bool use_padding;
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Operation *operations;
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struct {
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FLAC__bool has_shorthand_op;
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FLAC__bool has_major_op;
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FLAC__bool has_block_type;
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FLAC__bool has_except_block_type;
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} checks;
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} CommandLineOptions;
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static void parse_options(int argc, char *argv[], CommandLineOptions *options);
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static int short_usage(const char *message, ...);
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static int long_usage(const char *message, ...);
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static void hexdump(const FLAC__byte *buf, unsigned bytes, const char *indent);
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int main(int argc, char *argv[])
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{
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int i, first_file, retval = 0;
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FLAC__bool verbose = false, list_mode = true;
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if(argc <= 1)
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return usage(0);
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/* get the options */
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for(i = 1; i < argc; i++) {
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if(argv[i][0] != '-' || argv[i][1] == 0)
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break;
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if(0 == strcmp(argv[i], "-l"))
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list_mode = true;
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else if(0 == strcmp(argv[i], "-v"))
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verbose = true;
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else if(0 == strcmp(argv[i], "-v-"))
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verbose = false;
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else {
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return usage("ERROR: invalid option '%s'\n", argv[i]);
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}
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}
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if(i == argc)
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return usage(0);
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if(list_mode) {
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for(first_file = i; i < argc; i++) {
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FILE *f = fopen(argv[i], "rb");
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if(0 == f) {
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fprintf(stderr, "ERROR opening %s\n", argv[i]);
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retval = 1;
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}
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else {
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printf("%sfile: %s\n", i==first_file? "" : "\n", argv[i]);
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if(!list(f, verbose))
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retval = 1;
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fclose(f);
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}
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}
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}
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return retval;
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CommandLineOptions o;
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parse_options(argc, argv, &o);
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return 3;
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}
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int usage(const char *message, ...)
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void parse_options(int argc, char *argv[], CommandLineOptions *options)
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{
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int ret;
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int option_index = 1;
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while ((ret = getopt_long(argc, argv, "", long_options_, &option_index)) != -1) {
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switch (ret) {
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case 0:
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fprintf(stderr, "Internal error parsing command options\n");
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exit(1);
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break;
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case 1:
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break;
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case '?':
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break;
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case ':':
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break;
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default:
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/*@@@usage();*/
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exit(1);
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}
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}
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#if 0
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/* remaining bits must be the filenames */
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if((param->mode == MODE_LIST && (argc-optind) != 1) ||
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((param->mode == MODE_WRITE || param->mode == MODE_APPEND) &&
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((argc-optind) < 1 || (argc-optind) > 2))) {
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usage();
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exit(1);
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}
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param->infilename = strdup(argv[optind]);
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if (param->mode == MODE_WRITE || param->mode == MODE_APPEND)
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{
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if(argc-optind == 1)
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{
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param->tempoutfile = 1;
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param->outfilename = malloc(strlen(param->infilename)+8);
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strcpy(param->outfilename, param->infilename);
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strcat(param->outfilename, ".vctemp");
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}
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else
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param->outfilename = strdup(argv[optind+1]);
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}
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#endif
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}
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static void usage_header(FILE *out)
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{
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fprintf(out, "==============================================================================\n");
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fprintf(out, "metaflac - Command-line FLAC metadata editor version %s\n", FLAC__VERSION_STRING);
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fprintf(out, "Copyright (C) 2001,2002 Josh Coalson\n");
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fprintf(out, "\n");
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fprintf(out, "This program is free software; you can redistribute it and/or\n");
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fprintf(out, "modify it under the terms of the GNU General Public License\n");
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fprintf(out, "as published by the Free Software Foundation; either version 2\n");
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fprintf(out, "of the License, or (at your option) any later version.\n");
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fprintf(out, "\n");
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fprintf(out, "This program is distributed in the hope that it will be useful,\n");
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fprintf(out, "but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
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fprintf(out, "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");
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fprintf(out, "GNU General Public License for more details.\n");
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fprintf(out, "\n");
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fprintf(out, "You should have received a copy of the GNU General Public License\n");
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fprintf(out, "along with this program; if not, write to the Free Software\n");
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fprintf(out, "Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n");
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fprintf(out, "==============================================================================\n");
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}
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static void usage_summary(FILE *out)
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{
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fprintf(out, "Usage:\n");
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fprintf(out, " metaflac [options] [operations] FLACfile [FLACfile ...]\n");
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fprintf(out, "\n");
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fprintf(out, "Use metaflac to list, add, remove, or edit metadata in one or more FLAC files.\n");
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fprintf(out, "You may perform one major operation, or many shorthand operations at a time.\n");
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fprintf(out, "\n");
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fprintf(out, "Options:\n");
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fprintf(out, "--preserve-modtime Preserve the original modification time in spite of edits\n");
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fprintf(out, "--with-filename Prefix each output line with the FLAC file name\n");
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fprintf(out, " (the default if more than one FLAC file is specified)\n");
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fprintf(out, "--no-filename Do not prefix each output line with the FLAC file name\n");
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fprintf(out, " (the default if only one FLAC file is specified)\n");
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fprintf(out, "--dont-use-padding By default metaflac tries to use padding where possible\n");
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fprintf(out, " to avoid rewriting the entire file if the metadata size\n");
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fprintf(out, " changes. Use this option to tell metaflac to not use\n");
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fprintf(out, " padding at all.\n");
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}
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int short_usage(const char *message, ...)
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{
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va_list args;
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@@ -104,218 +277,140 @@ int usage(const char *message, ...)
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va_end(args);
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}
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printf("==============================================================================\n");
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printf("metaflac - Command-line FLAC metadata editor version %s\n", FLAC__VERSION_STRING);
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printf("Copyright (C) 2001,2002 Josh Coalson\n");
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printf("\n");
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printf("This program is free software; you can redistribute it and/or\n");
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printf("modify it under the terms of the GNU General Public License\n");
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printf("as published by the Free Software Foundation; either version 2\n");
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printf("of the License, or (at your option) any later version.\n");
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printf("\n");
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printf("This program is distributed in the hope that it will be useful,\n");
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printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
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printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");
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printf("GNU General Public License for more details.\n");
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||||
printf("\n");
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printf("You should have received a copy of the GNU General Public License\n");
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||||
printf("along with this program; if not, write to the Free Software\n");
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printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n");
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printf("==============================================================================\n");
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printf("Usage:\n");
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printf(" metaflac [options] flacfile [...]\n");
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printf("\n");
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printf("options:\n");
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printf(" -l : list metadata blocks\n");
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printf(" -v : verbose\n");
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usage_header(stderr);
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fprintf(stderr, "\n");
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fprintf(stderr, "This is the short help; for full help use 'metaflac --help'\n");
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fprintf(stderr, "\n");
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usage_summary(stderr);
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return message? 1 : 0;
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}
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|
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FLAC__bool list(FILE *f, FLAC__bool verbose)
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int long_usage(const char *message, ...)
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{
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||||
FLAC__byte buf[65536];
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FLAC__byte *b = buf;
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FLAC__StreamMetaData metadata;
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unsigned blocknum = 0, byte_offset = 0, i;
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FILE *out = (message? stderr : stdout);
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va_list args;
|
||||
|
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if(message) {
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va_start(args, message);
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||||
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||||
(void) vfprintf(stderr, message, args);
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||||
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va_end(args);
|
||||
|
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/* skip any id3v2 tag */
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if(fread(buf, 1, 4, f) < 4) {
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fprintf(stderr, "ERROR: not a FLAC file\n");
|
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return false;
|
||||
}
|
||||
if(0 == memcmp(buf, "ID3", 3)) {
|
||||
unsigned tag_length = 0;
|
||||
usage_header(out);
|
||||
fprintf(out, "\n");
|
||||
usage_summary(out);
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, "Shorthand operations:\n");
|
||||
fprintf(out, "--show-md5sum Show the MD5 signature from the STREAMINFO block.\n");
|
||||
fprintf(out, "--show-min-blocksize Show the minimum block size from the STREAMINFO block.\n");
|
||||
fprintf(out, "--show-max-blocksize Show the maximum block size from the STREAMINFO block.\n");
|
||||
fprintf(out, "--show-min-framesize Show the minimum frame size from the STREAMINFO block.\n");
|
||||
fprintf(out, "--show-max-framesize Show the maximum frame size from the STREAMINFO block.\n");
|
||||
fprintf(out, "--show-sample-rate Show the sample rate from the STREAMINFO block.\n");
|
||||
fprintf(out, "--show-channels Show the number of channels from the STREAMINFO block.\n");
|
||||
fprintf(out, "--show-bps Show the # of bits per sample from the STREAMINFO block.\n");
|
||||
fprintf(out, "--show-total-samples Show the total # of samples from the STREAMINFO block.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, "--show-vc-vendor Show the vendor string from the VORBIS_COMMENT block.\n");
|
||||
fprintf(out, "--show-vc-field=name Show all Vorbis comment fields where the the field name\n");
|
||||
fprintf(out, " matches 'name'.\n");
|
||||
fprintf(out, "--remove-vc-field=name\n");
|
||||
fprintf(out, " Remove all Vorbis comment fields whose field name is\n");
|
||||
fprintf(out, " 'name'.\n");
|
||||
fprintf(out, "--remove-vc-firstfield=name\n");
|
||||
fprintf(out, " Remove first Vorbis comment field whose field name is\n");
|
||||
fprintf(out, " 'name'.\n");
|
||||
fprintf(out, "--remove-vc-all Remove all Vorbis comment fields, leaving only the\n");
|
||||
fprintf(out, " vendor string in the VORBIS_COMMENT block.\n");
|
||||
fprintf(out, "--set-vc-field=field Add a Vorbis comment field. The field must comply with\n");
|
||||
fprintf(out, " the Vorbis comment spec, of the form \"NAME=VALUE\". If\n");
|
||||
fprintf(out, " there is currently no VORBIS_COMMENT block, one will be\n");
|
||||
fprintf(out, " created.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, "Major operations:\n");
|
||||
fprintf(out, "--list : List the contents of one or more metadata blocks to stdout. By\n");
|
||||
fprintf(out, " default, all metadata blocks are listed in text format. Use the\n");
|
||||
fprintf(out, " following options to change this behavior:\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, " --block-number=#[,#[...]]\n");
|
||||
fprintf(out, " An optional comma-separated list of block numbers to display. The first\n");
|
||||
fprintf(out, " block, the STREAMINFO block, is block 0.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, " --block-type=type[,type[...]]\n");
|
||||
fprintf(out, " --except-block-type=type[,type[...]]\n");
|
||||
fprintf(out, " An optional comma-separated list of block types to included or ignored\n");
|
||||
fprintf(out, " with this option. Use only one of --block-type or --except-block-type.\n");
|
||||
fprintf(out, " The valid block types are: STREAMINFO, PADDING, APPLICATION, SEEKTABLE,\n");
|
||||
fprintf(out, " VORBIS_COMMENT. You may narrow down the types of APPLICATION blocks\n");
|
||||
fprintf(out, " displayed as follows:\n");
|
||||
fprintf(out, " APPLICATION:abcd The APPLICATION block(s) whose textual repre-\n");
|
||||
fprintf(out, " sentation of the 4-byte ID is \"abcd\"\n");
|
||||
fprintf(out, " APPLICATION:0xXXXXXXXX The APPLICATION block(s) whose hexadecimal big-\n");
|
||||
fprintf(out, " endian representation of the 4-byte ID is\n");
|
||||
fprintf(out, " \"0xXXXXXXXX\". For the example \"abcd\" above the\n");
|
||||
fprintf(out, " hexadecimal equivalalent is 0x61626364\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, " NOTE: if both --block-number and --[except-]block-type are specified,\n");
|
||||
fprintf(out, " the result is the logical AND of both arguments.\n");
|
||||
fprintf(out, "\n");
|
||||
#if 0
|
||||
/*@@@ not implemented yet */
|
||||
fprintf(out, " --data-format=binary|text\n");
|
||||
fprintf(out, " By default a human-readable text representation of the data is displayed.\n");
|
||||
fprintf(out, " You may specify --data-format=binary to dump the raw binary form of each\n");
|
||||
fprintf(out, " metadata block. The output can be read in using a subsequent call to\n");
|
||||
fprintf(out, " "metaflac --append --from-file=..."\n");
|
||||
#endif
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, " --application-data-format=hexdump|text\n");
|
||||
fprintf(out, " If the application block you are displaying contains binary data but your\n");
|
||||
fprintf(out, " --data-format=text, you can display a hex dump of the application data\n");
|
||||
fprintf(out, " contents instead using --application-data-format=hexdump\n");
|
||||
fprintf(out, "\n");
|
||||
#if 0
|
||||
/*@@@ not implemented yet */
|
||||
fprintf(out, "--append : Insert a metadata block from a file. The input file must be in the\n");
|
||||
fprintf(out, " same format as generated with --list.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, " --block-number=#\n");
|
||||
fprintf(out, " Specify the insertion point (defaults to last block). The new block will\n");
|
||||
fprintf(out, " be added after the given block number. This prevents the illegal insertion\n");
|
||||
fprintf(out, " of a block before the first STREAMINFO block. You may not --append another\n");
|
||||
fprintf(out, " STREAMINFO block.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, " --from-file=filename\n");
|
||||
fprintf(out, " Mandatory 'option' to specify the input file containing the block contents.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, " --data-format=binary|text\n");
|
||||
fprintf(out, " By default the block contents are assumed to be in binary format. You can\n");
|
||||
fprintf(out, " override this by specifying --data-format=text\n");
|
||||
fprintf(out, "\n");
|
||||
#endif
|
||||
fprintf(out, "--remove : Remove one or more metadata blocks from the metadata. Unless\n");
|
||||
fprintf(out, " --dont-use-padding is specified, the blocks will be replaced with\n");
|
||||
fprintf(out, " padding. You may not remove the STREAMINFO block.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, " --block-number=#[,#[...]]\n");
|
||||
fprintf(out, " --block-type=type[,type[...]]\n");
|
||||
fprintf(out, " --except-block-type=type[,type[...]]\n");
|
||||
fprintf(out, " See --list above for usage.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, " NOTE: if both --block-number and --[except-]block-type are specified,\n");
|
||||
fprintf(out, " the result is the logical AND of both arguments.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, "--remove-all : Remove all metadata blocks (except the STREAMINFO block) from\n");
|
||||
fprintf(out, " the metadata. Unless --dont-use-padding is specified, the\n");
|
||||
fprintf(out, " blocks will be replaced with padding.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, "--merge-padding : Merge adjacent PADDING blocks into single blocks.\n");
|
||||
fprintf(out, "\n");
|
||||
fprintf(out, "--sort-padding : Move all PADDING blocks to the end of the metadata and merge\n");
|
||||
fprintf(out, " them into a single block.\n");
|
||||
|
||||
/* skip to the tag length */
|
||||
if(fseek(f, 2, SEEK_CUR) < 0) {
|
||||
fprintf(stderr, "ERROR: bad ID3v2 tag\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
/* read the length */
|
||||
for(i = 0; i < 4; i++) {
|
||||
if(fread(buf, 1, 1, f) < 1 || buf[0] & 0x80) {
|
||||
fprintf(stderr, "ERROR: bad ID3v2 tag\n");
|
||||
return false;
|
||||
}
|
||||
tag_length <<= 7;
|
||||
tag_length |= (buf[0] & 0x7f);
|
||||
}
|
||||
|
||||
/* skip the rest of the tag */
|
||||
if(fseek(f, tag_length, SEEK_CUR) < 0) {
|
||||
fprintf(stderr, "ERROR: bad ID3v2 tag\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
/* read the stream sync code */
|
||||
if(fread(buf, 1, 4, f) < 4) {
|
||||
fprintf(stderr, "ERROR: not a FLAC file (no '%s' header)\n", sync_string_);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/* check the stream sync code */
|
||||
if(memcmp(buf, sync_string_, 4)) {
|
||||
fprintf(stderr, "ERROR: not a FLAC file (no '%s' header)\n", sync_string_);
|
||||
return false;
|
||||
}
|
||||
byte_offset += 4;
|
||||
|
||||
/* read the metadata blocks */
|
||||
do {
|
||||
/* read the metadata block header */
|
||||
if(fread(buf, 1, 4, f) < 4) {
|
||||
fprintf(stderr, "ERROR: short count reading metadata block header\n");
|
||||
return false;
|
||||
}
|
||||
metadata.is_last = (buf[0] & 0x80)? true:false;
|
||||
metadata.type = (FLAC__MetaDataType)(buf[0] & 0x7f);
|
||||
metadata.length = unpack_uint32(buf+1, 3);
|
||||
|
||||
/* print header */
|
||||
printf("METADATA block #%u\n", blocknum);
|
||||
printf(" byte offset: %u\n", byte_offset);
|
||||
printf(" type: %u (%s)\n", (unsigned)metadata.type, metadata.type<=FLAC__METADATA_TYPE_SEEKTABLE? metadata_type_string_[metadata.type] : "UNKNOWN");
|
||||
printf(" is last: %s\n", metadata.is_last? "true":"false");
|
||||
printf(" length: %u\n", metadata.length);
|
||||
|
||||
if(metadata.length > sizeof(buf)) {
|
||||
printf(" SKIPPING large block\n");
|
||||
if(fseek(f, metadata.length, SEEK_CUR) < 0) {
|
||||
fprintf(stderr, "ERROR: short count skipping metadata block data\n");
|
||||
return false;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
/* read the metadata block data */
|
||||
if(fread(buf, 1, metadata.length, f) < metadata.length) {
|
||||
fprintf(stderr, "ERROR: short count reading metadata block data\n");
|
||||
return false;
|
||||
}
|
||||
switch(metadata.type) {
|
||||
case FLAC__METADATA_TYPE_STREAMINFO:
|
||||
b = buf;
|
||||
metadata.data.stream_info.min_blocksize = unpack_uint32(b, 2); b += 2;
|
||||
metadata.data.stream_info.max_blocksize = unpack_uint32(b, 2); b += 2;
|
||||
metadata.data.stream_info.min_framesize = unpack_uint32(b, 3); b += 3;
|
||||
metadata.data.stream_info.max_framesize = unpack_uint32(b, 3); b += 3;
|
||||
metadata.data.stream_info.sample_rate = (unpack_uint32(b, 2) << 4) | ((unsigned)(b[2] & 0xf0) >> 4);
|
||||
metadata.data.stream_info.channels = (unsigned)((b[2] & 0x0e) >> 1) + 1;
|
||||
metadata.data.stream_info.bits_per_sample = ((((unsigned)(b[2] & 0x01)) << 1) | (((unsigned)(b[3] & 0xf0)) >> 4)) + 1;
|
||||
metadata.data.stream_info.total_samples = (((FLAC__uint64)(b[3] & 0x0f)) << 32) | unpack_uint64(b+4, 4);
|
||||
memcpy(metadata.data.stream_info.md5sum, b+8, 16);
|
||||
break;
|
||||
case FLAC__METADATA_TYPE_PADDING:
|
||||
if(verbose) {
|
||||
/* dump contents */
|
||||
}
|
||||
break;
|
||||
case FLAC__METADATA_TYPE_APPLICATION:
|
||||
memcpy(metadata.data.application.id, buf, 4);
|
||||
metadata.data.application.data = buf+4;
|
||||
break;
|
||||
case FLAC__METADATA_TYPE_SEEKTABLE:
|
||||
metadata.data.seek_table.num_points = metadata.length / SEEKPOINT_LEN_;
|
||||
b = buf; /* we leave the points in buf for printing later */
|
||||
break;
|
||||
default:
|
||||
printf("SKIPPING block of unknown type\n");
|
||||
continue;
|
||||
}
|
||||
|
||||
/* print data */
|
||||
switch(metadata.type) {
|
||||
case FLAC__METADATA_TYPE_STREAMINFO:
|
||||
printf(" minumum blocksize: %u samples\n", metadata.data.stream_info.min_blocksize);
|
||||
printf(" maximum blocksize: %u samples\n", metadata.data.stream_info.max_blocksize);
|
||||
printf(" minimum framesize: %u bytes\n", metadata.data.stream_info.min_framesize);
|
||||
printf(" maximum framesize: %u bytes\n", metadata.data.stream_info.max_framesize);
|
||||
printf(" sample_rate: %u Hz\n", metadata.data.stream_info.sample_rate);
|
||||
printf(" channels: %u\n", metadata.data.stream_info.channels);
|
||||
printf(" bits-per-sample: %u\n", metadata.data.stream_info.bits_per_sample);
|
||||
printf(" total samples: %llu\n", metadata.data.stream_info.total_samples);
|
||||
printf(" MD5 signature: ");
|
||||
for(i = 0; i < 16; i++)
|
||||
printf("%02x", metadata.data.stream_info.md5sum[i]);
|
||||
printf("\n");
|
||||
break;
|
||||
case FLAC__METADATA_TYPE_PADDING:
|
||||
if(verbose) {
|
||||
printf(" pad contents:\n");
|
||||
hexdump(buf, metadata.length, " ");
|
||||
}
|
||||
break;
|
||||
case FLAC__METADATA_TYPE_APPLICATION:
|
||||
printf(" application ID: ");
|
||||
for(i = 0; i < 4; i++)
|
||||
printf("%02x", metadata.data.application.id[i]);
|
||||
printf("\n");
|
||||
if(verbose) {
|
||||
printf(" data contents:\n");
|
||||
hexdump(metadata.data.application.data, metadata.length, " ");
|
||||
}
|
||||
break;
|
||||
case FLAC__METADATA_TYPE_SEEKTABLE:
|
||||
printf(" seek points: %u\n", metadata.data.seek_table.num_points);
|
||||
if(verbose) {
|
||||
for(i = 0; i < metadata.data.seek_table.num_points; i++, b += SEEKPOINT_LEN_)
|
||||
printf(" point %d: sample_number=%llu, stream_offset=%llu, frame_samples=%u\n", i, unpack_uint64(b, 8), unpack_uint64(b+8, 8), unpack_uint32(b+16, 2));
|
||||
}
|
||||
break;
|
||||
default:
|
||||
FLAC__ASSERT(0);
|
||||
}
|
||||
|
||||
blocknum++;
|
||||
byte_offset += (4 + metadata.length);
|
||||
} while (!metadata.is_last);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
FLAC__uint32 unpack_uint32(FLAC__byte *b, unsigned bytes)
|
||||
{
|
||||
FLAC__uint32 ret = 0;
|
||||
unsigned i;
|
||||
|
||||
for(i = 0; i < bytes; i++)
|
||||
ret = (ret << 8) | (FLAC__uint32)(*b++);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
FLAC__uint64 unpack_uint64(FLAC__byte *b, unsigned bytes)
|
||||
{
|
||||
FLAC__uint64 ret = 0;
|
||||
unsigned i;
|
||||
|
||||
for(i = 0; i < bytes; i++)
|
||||
ret = (ret << 8) | (FLAC__uint64)(*b++);
|
||||
|
||||
return ret;
|
||||
return message? 1 : 0;
|
||||
}
|
||||
|
||||
void hexdump(const FLAC__byte *buf, unsigned bytes, const char *indent)
|
||||
|
||||
Reference in New Issue
Block a user