Merge ffmeg codecs list creation rework from 1.1 with adaptations.

There are no CONFIG_*_DECODER macros, so don't write the #ifdefs for them.
Instead, check the avcodec version number if requested ("config=foo=51,50,1").
Also, allow for AV_VERSION_INT being undefined.

1 files changed, 94 insertions, 0 deletions

diff --git a/src/combined/ffmpeg/mkcodeclist.pl b/src/combined/ffmpeg/mkcodeclist.pl
new file mode 100755
index 000000000..3f587342d
--- /dev/null
+++ b/src/combined/ffmpeg/mkcodeclist.pl
@@ -0,0 +1,94 @@
+#! /usr/bin/perl -w
+
+# Make codec lists for #inclusion by ff_*_decoder.c.
+# Parameters:
+#	list of ffmpeg CODEC_ID_* (pre-processed, one per line)
+#	list of codecs recognised by xine-lib (see list for details)
+#	output file name, or "-" to generate a report on unhandled codecs
+
+my ($ffmpeg, $xine, $out) = @ARGV;
+my $line;
+
+# Read in the ffmpeg codec IDs
+my %codecs;
+open LIST, "< $ffmpeg" or die $!;
+while (defined ($line = <LIST>)) {
+  chomp $line;
+  $line =~ s/^CODEC_ID_//o;
+  $codecs{$line} = 0;
+}
+close LIST or die $!;
+
+# Read in the xine-lib codec IDs
+my %config;
+my @known;
+my $type = 'audio'; # default type
+my $Type = 'AUDIO';
+my ($a, $f, $t);
+open LIST, "< $xine" or die $!;
+while (defined ($line = <LIST>)) {
+  next if substr ($line, 0, 1) eq '#' or $line =~ /^\s*$/o;
+  chomp $line;
+  if (substr ($line, 0, 5) eq 'type=') {
+    # codec type; "FOO" in "BUF_FOO_BAR"
+    $type = substr ($line, 5);
+    $type =~ tr/A-Z/a-z/;
+    $Type = $type;
+    $Type =~ tr/a-z/A-Z/;
+  } elsif (substr ($line, 0, 7) eq 'config=') { 
+    # avcodec minimum version mappings
+    ($a, $f, $t) = split (/=/, $line, 3);
+    $config{$f} = $t if $t =~ /^\d+,\d+,\d+$/
+  } else {
+    # codec details
+    push @known, [split (/\s+/, $line, 3)];
+  }
+}
+close LIST or die $!;
+
+# Look through the mappings.
+# Mark what we can handle and report on what the installed ffmpeg can't
+foreach $line (@known) {
+  if (defined $codecs{$line->[1]}) {
+    ++$codecs{$line->[1]};
+  } else {
+    print "Ignored $line->[0] = $line->[1]\n";
+  }
+}
+
+my $w = ($out ne '-');
+
+if ($w) {
+  # Write the C source code for the codec lists
+  open LIST, "> $out" or die $!;
+  print LIST "#ifndef AV_VERSION_INT\n# define AV_VERSION_INT(a,b,c) 0x7FFFFFFF\n#endif\n" or die $!;
+  print LIST "static const ff_codec_t ff_${type}_lookup[] = {\n" or die $!;
+  foreach $line (@known) {
+    next if $line->[0] eq '!';
+    next unless defined $codecs{$line->[1]};
+    print LIST "  { BUF_${Type}_$line->[0], CODEC_ID_$line->[1], \"$line->[2] (ffmpeg)\" },\n" or die $!;
+  }
+  print LIST "};\n\nstatic uint32_t supported_${type}_types[] = {\n" or die $!;
+  foreach $line (@known) {
+    next if $line->[0] eq '!';
+    next unless defined $codecs{$line->[1]};
+    $a = '';
+    $a = $config{$a} if defined $config{$a};
+    if ($a eq '') {
+      print LIST "  BUF_${Type}_$line->[0],\n" or die $!;
+    } else {
+      print LIST "  #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT($a)\n  BUF_${Type}_$line->[0],\n  #endif\n" or die $!;
+    }
+  }
+  print LIST "};\n" or die $!;
+  close LIST or die $!;
+}
+else {
+  # Report on ffmpeg codecs which we don't handle
+  print "Unhandled $type codecs:\n";
+  foreach $line (sort keys %codecs) {
+    print "  $line\n" if $codecs{$line} == 0;
+  }
+}
+
+exit 0;