gnu: VLC: Fix build with dav1d 1.0.

* gnu/packages/video.scm (vlc)[source](patches): New field.
* gnu/packages/patches/vlc-dav1d-compat.patch: New file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.

3 files changed, 72 insertions, 0 deletions

diff --git a/gnu/local.mk b/gnu/local.mk
index b154caaaaa..8f59fb5faf 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1979,6 +1979,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/vinagre-newer-rdp-parameters.patch      \
   %D%/packages/patches/virglrenderer-CVE-2017-6386.patch 	\
   %D%/packages/patches/virtuoso-ose-remove-pre-built-jar-files.patch	\
+  %D%/packages/patches/vlc-dav1d-compat.patch			\
   %D%/packages/patches/vsearch-unbundle-cityhash.patch		\
   %D%/packages/patches/vte-CVE-2012-2738-pt1.patch			\
   %D%/packages/patches/vte-CVE-2012-2738-pt2.patch			\
diff --git a/gnu/packages/patches/vlc-dav1d-compat.patch b/gnu/packages/patches/vlc-dav1d-compat.patch
new file mode 100644
index 0000000000..3cb737faba
--- /dev/null
+++ b/gnu/packages/patches/vlc-dav1d-compat.patch
@@ -0,0 +1,70 @@
+Fix build against dav1d 1.0.
+
+  https://code.videolan.org/videolan/vlc/-/merge_requests/1618
+
+Patch adjusted for VLC 3.0 taken from Gentoo:
+
+  https://gitweb.gentoo.org/repo/gentoo.git/tree/media-video/vlc/files/vlc-3.0.17.3-dav1d-1.0.0.patch
+
+--- a/modules/codec/dav1d.c
++++ b/modules/codec/dav1d.c
+@@ -63,10 +63,16 @@ vlc_module_begin ()
+     set_category(CAT_INPUT)
+     set_subcategory(SUBCAT_INPUT_VCODEC)
+ 
++#if DAV1D_API_VERSION_MAJOR >= 6
++    add_integer_with_range("dav1d-thread-frames", 0, 0, DAV1D_MAX_THREADS,
++                THREAD_FRAMES_TEXT, THREAD_FRAMES_LONGTEXT, false)
++    add_obsolete_string("dav1d-thread-tiles") // unused with dav1d 1.0
++#else
+     add_integer_with_range("dav1d-thread-frames", 0, 0, DAV1D_MAX_FRAME_THREADS,
+                 THREAD_FRAMES_TEXT, THREAD_FRAMES_LONGTEXT, false)
+     add_integer_with_range("dav1d-thread-tiles", 0, 0, DAV1D_MAX_TILE_THREADS,
+                 THREAD_TILES_TEXT, THREAD_TILES_LONGTEXT, false)
++#endif
+ vlc_module_end ()
+ 
+ /*****************************************************************************
+@@ -294,6 +300,11 @@ static int OpenDecoder(vlc_object_t *p_this)
+         return VLC_ENOMEM;
+ 
+     dav1d_default_settings(&p_sys->s);
++#if DAV1D_API_VERSION_MAJOR >= 6
++    p_sys->s.n_threads = var_InheritInteger(p_this, "dav1d-thread-frames");
++    if (p_sys->s.n_threads == 0)
++        p_sys->s.n_threads = (i_core_count < 16) ? i_core_count : 16;
++#else
+     p_sys->s.n_tile_threads = var_InheritInteger(p_this, "dav1d-thread-tiles");
+     if (p_sys->s.n_tile_threads == 0)
+         p_sys->s.n_tile_threads =
+@@ -303,6 +314,7 @@ static int OpenDecoder(vlc_object_t *p_this)
+     p_sys->s.n_frame_threads = var_InheritInteger(p_this, "dav1d-thread-frames");
+     if (p_sys->s.n_frame_threads == 0)
+         p_sys->s.n_frame_threads = (i_core_count < 16) ? i_core_count : 16;
++#endif
+     p_sys->s.allocator.cookie = dec;
+     p_sys->s.allocator.alloc_picture_callback = NewPicture;
+     p_sys->s.allocator.release_picture_callback = FreePicture;
+@@ -313,12 +325,20 @@ static int OpenDecoder(vlc_object_t *p_this)
+         return VLC_EGENERIC;
+     }
+ 
++#if DAV1D_API_VERSION_MAJOR >= 6
++    msg_Dbg(p_this, "Using dav1d version %s with %d threads",
++            dav1d_version(), p_sys->s.n_threads);
++
++    dec->i_extra_picture_buffers = (p_sys->s.n_threads - 1);
++#else
+     msg_Dbg(p_this, "Using dav1d version %s with %d/%d frame/tile threads",
+             dav1d_version(), p_sys->s.n_frame_threads, p_sys->s.n_tile_threads);
+ 
++    dec->i_extra_picture_buffers = (p_sys->s.n_frame_threads - 1);
++#endif
++
+     dec->pf_decode = Decode;
+     dec->pf_flush = FlushDecoder;
+-    dec->i_extra_picture_buffers = (p_sys->s.n_frame_threads - 1);
+ 
+     dec->fmt_out.video.i_width = dec->fmt_in.video.i_width;
+     dec->fmt_out.video.i_height = dec->fmt_in.video.i_height;
+GitLab
diff --git a/gnu/packages/video.scm b/gnu/packages/video.scm
index f54ced4e2e..7f2112de0d 100644
--- a/gnu/packages/video.scm
+++ b/gnu/packages/video.scm
@@ -1943,6 +1943,7 @@ videoformats depend on the configuration flags of ffmpeg.")
                     "https://download.videolan.org/pub/videolan/vlc/"
                     (car (string-split version #\-))
                     "/vlc-" version ".tar.xz"))
+              (patches (search-patches "vlc-dav1d-compat.patch"))
               (sha256
                (base32
                 "0cs1vnv91mg7p6253v6wms3zlz91xzphpwaw14dmrd2gibc64nlc"))))