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| author | Elliott Hughes <enh@google.com> | 2018-08-23 15:47:08 -0700 |
|---|---|---|
| committer | Rob Landley <rob@landley.net> | 2018-09-15 00:07:58 -0500 |
| commit | d6c5f558eb822571472af0f2db38d6be853c06fd (patch) | |
| tree | 2d412b23ec4c38003a1474e93a6759bd8a399fb6 | |
| parent | d20a11f236b57fe515ce4dbb37e0300d7ba179b5 (diff) | |
| download | toybox-d6c5f558eb822571472af0f2db38d6be853c06fd.tar.gz | |
Add .wav support to file(1).
| -rw-r--r-- | toys/posix/file.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/toys/posix/file.c b/toys/posix/file.c index 333869cd..552cd03f 100644 --- a/toys/posix/file.c +++ b/toys/posix/file.c @@ -317,6 +317,33 @@ static void do_regular_file(int fd, char *name) if (!memcmp(s+28, "\x01vorbis", 7)) xprintf(", vorbis audio"); if (!memcmp(s+28, "YUV4MPEG", 8)) xprintf(", yuv4mpeg video"); xputc('\n'); + } else if (len>32 && !memcmp(s, "RIF", 3) && !memcmp(s+8, "WAVEfmt ", 8)) { + // https://en.wikipedia.org/wiki/WAV + int le = (s[3] == 'F'); + int format = le ? peek_le(s+20,2) : peek_be(s+20,2); + int channels = le ? peek_le(s+22,2) : peek_be(s+22,2); + int hz = le ? peek_le(s+24,4) : peek_be(s+24,4); + int bits = le ? peek_le(s+34,2) : peek_be(s+34,2); + + xprintf("WAV audio, %s, ", le ? "LE" : "BE"); + if (bits != 0) xprintf("%d-bit, ", bits); + if (channels==1||channels==2) xprintf("%s, ", channels==1?"mono":"stereo"); + else xprintf("%d-channel, ", channels); + xprintf("%d Hz, ", hz); + // See https://tools.ietf.org/html/rfc2361, though there appear to be bugs + // in the RFC. This assumes wikipedia's example files are more correct. + if (format == 0x01) xprintf("PCM"); + else if (format == 0x03) xprintf("IEEE float"); + else if (format == 0x06) xprintf("A-law"); + else if (format == 0x07) xprintf("ยต-law"); + else if (format == 0x11) xprintf("ADPCM"); + else if (format == 0x22) xprintf("Truespeech"); + else if (format == 0x31) xprintf("GSM"); + else if (format == 0x55) xprintf("MP3"); + else if (format == 0x70) xprintf("CELP"); + else if (format == 0xfffe) xprintf("extensible"); + else xprintf("unknown format %d", format); + xputc('\n'); } else if (len>12 && !memcmp(s, "\x00\x01\x00\x00", 4)) { xputs("TrueType font"); } else if (len>12 && !memcmp(s, "ttcf\x00", 5)) { |