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libmpeg2: Add patches from Handbrake project

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libmpeg2 is abandoned upstream.

Patches:
- A00: Fix tag handling on frames
This commit is contained in:
Wout Mertens 2014-05-04 01:34:24 +02:00
parent c02f80375f
commit ccb065a08c
2 changed files with 33 additions and 1 deletions
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27
pkgs/development/libraries/libmpeg2/A00-tags.patch Normal file
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@ -0,0 +1,27 @@
diff -ru mpeg2dec.orig/libmpeg2/decode.c mpeg2dec/libmpeg2/decode.c
--- mpeg2dec.orig/libmpeg2/decode.c 2008-07-09 12:16:05.000000000 -0700
+++ mpeg2dec/libmpeg2/decode.c 2009-07-03 16:29:48.000000000 -0700
@@ -212,7 +212,7 @@
mpeg2_state_t mpeg2_parse_header (mpeg2dec_t * mpeg2dec)
{
- static int (* process_header[]) (mpeg2dec_t * mpeg2dec) = {
+ static int (* process_header[]) (mpeg2dec_t *) = {
mpeg2_header_picture, mpeg2_header_extension, mpeg2_header_user_data,
mpeg2_header_sequence, NULL, NULL, NULL, NULL, mpeg2_header_gop
};
@@ -368,6 +368,14 @@
void mpeg2_tag_picture (mpeg2dec_t * mpeg2dec, uint32_t tag, uint32_t tag2)
{
+ if (mpeg2dec->num_tags == 0 && mpeg2dec->state == STATE_PICTURE && mpeg2dec->picture) {
+ // since tags got processed when we entered this state we
+ // have to set them directly or they'll end up on the next frame.
+ mpeg2dec->picture->tag = tag;
+ mpeg2dec->picture->tag2 = tag2;
+ mpeg2dec->picture->flags |= PIC_FLAG_TAGS;
+ return;
+ }
mpeg2dec->tag_previous = mpeg2dec->tag_current;
mpeg2dec->tag2_previous = mpeg2dec->tag2_current;
mpeg2dec->tag_current = tag;

7
pkgs/development/libraries/libmpeg2/default.nix
View File

@ -1,13 +1,18 @@
{ stdenv, fetchurl }:
stdenv.mkDerivation rec {
name = "libmpeg2-0.5.1";
name = "libmpeg2-0.5.1p4";
src = fetchurl {
url = "http://libmpeg2.sourceforge.net/files/${name}.tar.gz";
sha256 = "1m3i322n2fwgrvbs1yck7g5md1dbg22bhq5xdqmjpz5m7j4jxqny";
};
# From Handbrake - Project seems unmaintained
patches = [
./A00-tags.patch
];
meta = {
homepage = http://libmpeg2.sourceforge.net/;
description = "A free library for decoding mpeg-2 and mpeg-1 video streams";