#include "FLAC/all.h"
static const char *sync_string_ = "fLaC"; /* DUPLICATE:FLAC__STREAM_SYNC_STRING */
+static const char *metadata_type_string_[] = { /* DUPLICATE:FLAC__MetaDataTypeString */
+ "STREAMINFO",
+ "PADDING",
+ "APPLICATION"
+};
static int usage(const char *message, ...);
static bool list(FILE *f, bool verbose);
+static uint32 unpack_uint32(byte *b, unsigned bytes);
+static uint64 unpack_uint64(byte *b, unsigned bytes);
+static void hexdump(const byte *buf, unsigned bytes);
int main(int argc, char *argv[])
{
printf("options:\n");
printf(" -l : list metadata blocks\n");
printf(" -v : verbose\n");
- printf(" -v- can all be used to turn off a particular option\n");
return 1;
}
bool list(FILE *f, bool verbose)
{
- static byte buf[65536];
+ static byte buf[65536], *b;
FLAC__StreamMetaData metadata;
+ unsigned blocknum = 0, i;
/* read the stream sync code */
if(fread(buf, 1, 4, f) < 4 || memcmp(buf, sync_string_, 4)) {
}
metadata.is_last = (buf[0] & 0x80)? true:false;
metadata.type = (FLAC__MetaDataType)(buf[0] & 0x7f);
- metadata.length = (((unsigned)buf[1]) << 16) | (((unsigned)buf[2]) << 8) | ((unsigned)buf[3]);
+ metadata.length = unpack_uint32(buf+1, 3);
+
+ /* print header */
+ printf("METADATA block #%u:\n", blocknum);
+ printf("type: %u (%s)\n", (unsigned)metadata.type, metadata.type<=FLAC__METADATA_TYPE_APPLICATION? 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\n");
+ 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\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 = (((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(buf, metadata.data.application.id, 4);
+ metadata.data.application.data = buf+4;
+ break;
+ default:
+ printf("SKIPPING block of unknown type\n\n");
+ continue;
+ }
- /* print it */
- printf("METADATA block:\n");
- printf("\ttype: %u\n", (unsigned)metadata.type);
- printf("\tis last: %s\n", metadata.is_last? "true":"false");
- printf("\tlength: %u\n", metadata.length);
+ /* print data */
+ switch(metadata.type) {
+ case FLAC__METADATA_TYPE_STREAMINFO:
+ printf("minumum blocksize: %u samples\n", metadata.data.stream_info.min_blocksize);
+ printf("maxumum 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;
+ default:
+ assert(0);
+ }
+
+ if(!metadata.is_last)
+ printf("\n");
+
+ blocknum++;
} while (!metadata.is_last);
return true;
}
+
+static uint32 unpack_uint32(byte *b, unsigned bytes)
+{
+ uint32 ret = 0;
+ unsigned i;
+
+ for(i = 0; i < bytes; i++)
+ ret = (ret << 8) | (uint32)(*b++);
+
+ return ret;
+}
+
+static uint64 unpack_uint64(byte *b, unsigned bytes)
+{
+ uint64 ret = 0;
+ unsigned i;
+
+ for(i = 0; i < bytes; i++)
+ ret = (ret << 8) | (uint64)(*b++);
+
+ return ret;
+}
+
+void hexdump(const byte *buf, unsigned bytes)
+{
+ unsigned i, left = bytes;
+ const byte *b = buf;
+
+ for(i = 0; i < bytes; i += 16) {
+ printf("%08X: "
+ "%02X %02X %02X %02X %02X %02X %02X %02X "
+ "%02X %02X %02X %02X %02X %02X %02X %02X "
+ "%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c\n",
+ i,
+ left > 0? (unsigned char)b[ 0] : 0,
+ left > 1? (unsigned char)b[ 1] : 0,
+ left > 2? (unsigned char)b[ 2] : 0,
+ left > 3? (unsigned char)b[ 3] : 0,
+ left > 4? (unsigned char)b[ 4] : 0,
+ left > 5? (unsigned char)b[ 5] : 0,
+ left > 6? (unsigned char)b[ 6] : 0,
+ left > 7? (unsigned char)b[ 7] : 0,
+ left > 8? (unsigned char)b[ 8] : 0,
+ left > 9? (unsigned char)b[ 9] : 0,
+ left > 10? (unsigned char)b[10] : 0,
+ left > 11? (unsigned char)b[11] : 0,
+ left > 12? (unsigned char)b[12] : 0,
+ left > 13? (unsigned char)b[13] : 0,
+ left > 14? (unsigned char)b[14] : 0,
+ left > 15? (unsigned char)b[15] : 0,
+ (left > 0) ? (isprint(b[ 0]) ? b[ 0] : '.') : ' ',
+ (left > 1) ? (isprint(b[ 1]) ? b[ 1] : '.') : ' ',
+ (left > 2) ? (isprint(b[ 2]) ? b[ 2] : '.') : ' ',
+ (left > 3) ? (isprint(b[ 3]) ? b[ 3] : '.') : ' ',
+ (left > 4) ? (isprint(b[ 4]) ? b[ 4] : '.') : ' ',
+ (left > 5) ? (isprint(b[ 5]) ? b[ 5] : '.') : ' ',
+ (left > 6) ? (isprint(b[ 6]) ? b[ 6] : '.') : ' ',
+ (left > 7) ? (isprint(b[ 7]) ? b[ 7] : '.') : ' ',
+ (left > 8) ? (isprint(b[ 8]) ? b[ 8] : '.') : ' ',
+ (left > 9) ? (isprint(b[ 9]) ? b[ 9] : '.') : ' ',
+ (left > 10) ? (isprint(b[10]) ? b[10] : '.') : ' ',
+ (left > 11) ? (isprint(b[11]) ? b[11] : '.') : ' ',
+ (left > 12) ? (isprint(b[12]) ? b[12] : '.') : ' ',
+ (left > 13) ? (isprint(b[13]) ? b[13] : '.') : ' ',
+ (left > 14) ? (isprint(b[14]) ? b[14] : '.') : ' ',
+ (left > 15) ? (isprint(b[15]) ? b[15] : '.') : ' '
+ );
+ left -= 16;
+ b += 16;
+ }
+}
projects / platform / upstream / flac.git / commitdiff