lavc/vulkan: add SPIR-V compilation support

This is the same as with libavfilter.

We will need SPIR-V compilation for at least three different things,
like the VC-2 encoder and decoder, AV1 film grain synthesis for
hardware with no support for it, and possibly other codecs.

libavcodec/Makefile

@@ -1258,6 +1258,10 @@ OBJS-$(HAVE_THREADS)                   += pthread.o pthread_slice.o pthread_fram
 
 OBJS-$(CONFIG_FRAME_THREAD_ENCODER)    += frame_thread_encoder.o
 
+# vulkan libs
+OBJS-$(CONFIG_LIBGLSLANG)              += vulkan_glslang.o
+OBJS-$(CONFIG_LIBSHADERC)              += vulkan_shaderc.o
+
 # Windows resource file
 SHLIBOBJS-$(HAVE_GNU_WINDRES)           += avcodecres.o
 

libavcodec/vulkan_glslang.c

@@ -0,0 +1,19 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/vulkan_glslang.c"

libavcodec/vulkan_shaderc.c

@@ -0,0 +1,19 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/vulkan_shaderc.c"