[meta-oe][PATCH] mplayer2: fix building with gcc 5.x

[Awais Belal <awais_belal@mentor.com>]

This patch works around a potential problem in the theora
glue code where it assumes that the compiler will
somehow find a function which is not exported explicitly
through the libtheora library. Due to this problem the
build fails with gcc-5.x compiler.
The included patch essentially backports a commit which
updates the glue code to use the Theora 1.0 API to
eliminate this problem and PNBLACKLIST is cleared
for mplayer2.

Signed-off-by: Awais Belal <awais_belal@mentor.com>
---
 ...artially-port-libtheora-glue-code-to-Theo.patch | 136 +++++++++++++++++++++
 meta-oe/recipes-multimedia/mplayer/mplayer2_git.bb |   4 +-
 2 files changed, 137 insertions(+), 3 deletions(-)
 create mode 100644 meta-oe/recipes-multimedia/mplayer/mplayer2/0001-demux_ogg-partially-port-libtheora-glue-code-to-Theo.patch

diff --git a/meta-oe/recipes-multimedia/mplayer/mplayer2/0001-demux_ogg-partially-port-libtheora-glue-code-to-Theo.patch b/meta-oe/recipes-multimedia/mplayer/mplayer2/0001-demux_ogg-partially-port-libtheora-glue-code-to-Theo.patch
new file mode 100644
index 0000000..b4d9841
--- /dev/null
+++ b/meta-oe/recipes-multimedia/mplayer/mplayer2/0001-demux_ogg-partially-port-libtheora-glue-code-to-Theo.patch
@@ -0,0 +1,136 @@
+From 0571bb4f1a6e1934ee7e093ce7aa517b9bac8e6a Mon Sep 17 00:00:00 2001
+From: Awais Belal <awais_belal@mentor.com>
+Date: Sun, 17 Jan 2016 14:46:10 +0500
+Subject: [PATCH] demux_ogg: partially port libtheora glue code to Theora 1.0
+ API
+
+This partially backports the following commit to allow building
+with gcc-5.x and otherwise fails to find the definition of
+the _ilog function the way it is used.
+
+https://github.com/pigoz/mplayer-svn/commit/85e51408cd00979fc209da8e3a39b6f0e7f325bc
+
+Signed-off-by: Awais Belal <awais_belal@mentor.com>
+---
+ libmpdemux/demux_ogg.c | 52 ++++++++++++++++++++++++++------------------------
+ 1 file changed, 27 insertions(+), 25 deletions(-)
+
+diff --git a/libmpdemux/demux_ogg.c b/libmpdemux/demux_ogg.c
+index 9eea061..9144426 100644
+--- a/libmpdemux/demux_ogg.c
++++ b/libmpdemux/demux_ogg.c
+@@ -50,8 +50,7 @@
+ #endif
+ 
+ #ifdef CONFIG_OGGTHEORA
+-#include <theora/theora.h>
+-int _ilog (unsigned int); /* defined in many places in theora/lib/ */
++#include <theora/theoradec.h>
+ #endif
+ 
+ #define BLOCK_SIZE 4096
+@@ -62,9 +61,10 @@ int _ilog (unsigned int); /* defined in many places in theora/lib/ */
+  */
+ #ifdef CONFIG_OGGTHEORA
+ typedef struct theora_struct_st {
+-    theora_state   st;
+-    theora_comment cc;
+-    theora_info    inf;
++    th_setup_info *tsi;
++    th_dec_ctx    *tctx;
++    th_comment     tc;
++    th_info        ti;
+ } theora_struct_t;
+ #endif
+ 
+@@ -117,7 +117,7 @@ typedef struct ogg_stream {
+     float   samplerate; /// granulpos 2 time
+     int64_t lastpos;
+     int32_t lastsize;
+-    int     keyframe_frequency_force;
++    int     keyframe_granule_shift;
+ 
+     // Logical stream state
+     ogg_stream_state stream;
+@@ -300,11 +300,10 @@ static unsigned char *demux_ogg_read_packet(ogg_stream_t *os, ogg_packet *pack,
+            have theora_state st, until all header packets were passed to the
+            decoder. */
+         if (!pack->bytes || !(*data&0x80)) {
+-            int keyframe_granule_shift = _ilog(os->keyframe_frequency_force - 1);
+-            int64_t iframemask = (1 << keyframe_granule_shift) - 1;
++            int64_t iframemask = iframemask = (1 << os->keyframe_granule_shift) - 1;
+ 
+             if (pack->granulepos >= 0) {
+-                os->lastpos  = pack->granulepos >> keyframe_granule_shift;
++                os->lastpos  = pack->granulepos >> os->keyframe_granule_shift;
+                 os->lastpos += pack->granulepos & iframemask;
+                 *keyframe = (pack->granulepos & iframemask) == 0;
+             } else {
+@@ -888,14 +887,15 @@ int demux_ogg_open(demuxer_t *demuxer)
+ #ifdef CONFIG_OGGTHEORA
+         } else if (pack.bytes >= 7 && !strncmp (&pack.packet[1], "theora", 6)) {
+             int errorCode = 0;
+-            theora_info inf;
+-            theora_comment cc;
++            th_info ti;
++            th_comment tc;
++            th_setup_info *tsi = NULL;
+ 
+-            theora_info_init (&inf);
+-            theora_comment_init (&cc);
++            th_info_init (&ti);
++            th_comment_init (&tc);
+ 
+-            errorCode = theora_decode_header (&inf, &cc, &pack);
+-            if (errorCode) {
++            errorCode = th_decode_headerin(&ti, &tc, &tsi, &pack);
++            if (errorCode < 0) {
+                 mp_msg(MSGT_DEMUX, MSGL_ERR,
+                        "Theora header parsing failed: %i \n", errorCode);
+             } else {
+@@ -904,30 +904,32 @@ int demux_ogg_open(demuxer_t *demuxer)
+                 sh_v->bih = calloc(1, sizeof(*sh_v->bih));
+                 sh_v->bih->biSize        = sizeof(*sh_v->bih);
+                 sh_v->bih->biCompression = sh_v->format = FOURCC_THEORA;
+-                sh_v->fps = ((double)inf.fps_numerator) / (double)inf.fps_denominator;
+-                sh_v->frametime = ((double)inf.fps_denominator) / (double)inf.fps_numerator;
+-                sh_v->disp_w = sh_v->bih->biWidth  = inf.frame_width;
+-                sh_v->disp_h = sh_v->bih->biHeight = inf.frame_height;
++                sh_v->fps = ((double)ti.fps_numerator) / (double)ti.fps_denominator;
++                sh_v->frametime = ((double)ti.fps_denominator) / (double)ti.fps_numerator;
++                sh_v->i_bps  = ti.target_bitrate / 8;
++                sh_v->disp_w = sh_v->bih->biWidth  = ti.frame_width;
++                sh_v->disp_h = sh_v->bih->biHeight = ti.frame_height;
+                 sh_v->bih->biBitCount  = 24;
+                 sh_v->bih->biPlanes    = 3;
+                 sh_v->bih->biSizeImage = ((sh_v->bih->biBitCount / 8) * sh_v->bih->biWidth * sh_v->bih->biHeight);
+                 ogg_d->subs[ogg_d->num_sub].samplerate               = sh_v->fps;
+                 ogg_d->subs[ogg_d->num_sub].theora                   = 1;
+-                ogg_d->subs[ogg_d->num_sub].keyframe_frequency_force = inf.keyframe_frequency_force;
++                ogg_d->subs[ogg_d->num_sub].keyframe_granule_shift   = ti.keyframe_granule_shift;
+                 ogg_d->subs[ogg_d->num_sub].id                       = n_video;
+                 n_video++;
+                 mp_msg(MSGT_DEMUX, MSGL_INFO,
+                        "[Ogg] stream %d: video (Theora v%d.%d.%d), -vid %d\n",
+                        ogg_d->num_sub,
+-                       (int)inf.version_major,
+-                       (int)inf.version_minor,
+-                       (int)inf.version_subminor,
++                       (int)ti.version_major,
++                       (int)ti.version_minor,
++                       (int)ti.version_subminor,
+                        n_video - 1);
+                 if (mp_msg_test(MSGT_HEADER, MSGL_V))
+                     print_video_header(sh_v->bih, MSGL_V);
+             }
+-            theora_comment_clear(&cc);
+-            theora_info_clear(&inf);
++            th_comment_clear(&tc);
++            th_info_clear(&ti);
++            th_setup_free(tsi);
+ #endif /* CONFIG_OGGTHEORA */
+         } else if (pack.bytes >= 4 && !strncmp (&pack.packet[0], "fLaC", 4)) {
+             sh_a = new_sh_audio_aid(demuxer, ogg_d->num_sub, n_audio);
+-- 
+1.9.1
+
diff --git a/meta-oe/recipes-multimedia/mplayer/mplayer2_git.bb b/meta-oe/recipes-multimedia/mplayer/mplayer2_git.bb
index 2f0369a..9df4e74 100644
--- a/meta-oe/recipes-multimedia/mplayer/mplayer2_git.bb
+++ b/meta-oe/recipes-multimedia/mplayer/mplayer2_git.bb
@@ -21,6 +21,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=d32239bcb673463ab874e80d47fae504"
 
 SRC_URI = "git://repo.or.cz/mplayer.git \
     file://0001-configure-don-t-disable-ASS-support-when-explicitly-.patch \
+    file://0001-demux_ogg-partially-port-libtheora-glue-code-to-Theo.patch \
 "
 
 SRCREV = "2c378c71a4d9b1df382db9aa787b646628b4e3f9"
@@ -153,6 +154,3 @@ do_install() {
     install ${S}/etc/codecs.conf ${D}/usr/etc/mplayer/
     [ -e ${D}/usr/lib ] && rmdir ${D}/usr/lib
 }
-
-# | libmpdemux/demux_ogg.o:demux_ogg.c:function demux_ogg_read_packet: error: undefined reference to '_ilog'
-PNBLACKLIST[mplayer2] ?= "BROKEN, fails to build with gcc-5"
-- 
1.9.1