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opusenc: Clarify raw input documentation

--- a/man/opusenc.1

+++ b/man/opusenc.1

@@ -14,7 +14,8 @@

 .SH DESCRIPTION

 .B opusenc

 reads audio data in Wave, AIFF, FLAC, Ogg/FLAC,

-or raw PCM/float format and encodes it into an Ogg Opus stream.

+or raw PCM (integer or floating point) format

+and encodes it into an Ogg Opus stream.

 If the input file is "\fB\-\fR" audio data is read from stdin.

 Likewise, if the output file is "\fB\-\fR" the Ogg Opus stream

 is written to stdout.

@@ -294,7 +295,8 @@

 Interpret input as raw floating point data without headers.

 .TP

 .BI --raw-bits " N"

-Set bits/sample for raw input (default: 16).

+Set bits/sample for raw input (default: 16; 32 for floating point).

+May be 8, 16, or 24 for integer PCM or 32 for floating point.

 .TP

 .BI --raw-rate " N"

 Set sampling rate for raw input (default: 48000).

--- a/src/opusenc.c

+++ b/src/opusenc.c

@@ -171,7 +171,7 @@

   printf("\nInput options:\n");

   printf(" --raw              Interpret input as raw PCM data without headers\n");

   printf(" --raw-float        Interpret input as raw float data without headers\n");

-  printf(" --raw-bits n       Set bits/sample for raw input (default: 16)\n");

+  printf(" --raw-bits n       Set bits/sample for raw input (default: 16; 32 for float)\n");

   printf(" --raw-rate n       Set sampling rate for raw input (default: 48000)\n");

   printf(" --raw-chan n       Set number of channels for raw input (default: 2)\n");

   printf(" --raw-endianness n 1 for big endian, 0 for little (default: 0)\n");

@@ -801,9 +801,9 @@

     fatal("Invalid bit-depth:\n"

       "--raw-bits can only be 32 for float sample format\n");

   }

-  if (inopt.samplesize<24&&(inopt.rawmode_f)) {

+  if (inopt.samplesize!=32&&(inopt.rawmode_f)) {

     fatal("Invalid bit-depth:\n"

-      "--raw-bits must be 24 or 32 for float sample format\n");

+      "--raw-bits must be 32 for float sample format\n");

   }

   if (argc_utf8-optind!=2) {

     usage();