ffv1enc: add a Vulkan encoder

Author: cyanreg

configure

@@ -2951,6 +2951,7 @@ exr_decoder_deps="zlib"
 exr_encoder_deps="zlib"
 ffv1_decoder_select="rangecoder"
 ffv1_encoder_select="rangecoder"
+ffv1_vulkan_encoder_select="vulkan spirv_compiler"
 ffvhuff_decoder_select="huffyuv_decoder"
 ffvhuff_encoder_select="huffyuv_encoder"
 fic_decoder_select="golomb"

libavcodec/Makefile

@@ -370,6 +370,7 @@ OBJS-$(CONFIG_EXR_ENCODER)             += exrenc.o float2half.o
 OBJS-$(CONFIG_FASTAUDIO_DECODER)       += fastaudio.o
 OBJS-$(CONFIG_FFV1_DECODER)            += ffv1dec.o ffv1.o
 OBJS-$(CONFIG_FFV1_ENCODER)            += ffv1enc.o ffv1.o
+OBJS-$(CONFIG_FFV1_VULKAN_ENCODER)     += ffv1enc.o ffv1.o ffv1enc_vulkan.o
 OBJS-$(CONFIG_FFWAVESYNTH_DECODER)     += ffwavesynth.o
 OBJS-$(CONFIG_FIC_DECODER)             += fic.o
 OBJS-$(CONFIG_FITS_DECODER)            += fitsdec.o fits.o

libavcodec/allcodecs.c

@@ -116,6 +116,7 @@ extern const FFCodec ff_escape130_decoder;
 extern const FFCodec ff_exr_encoder;
 extern const FFCodec ff_exr_decoder;
 extern const FFCodec ff_ffv1_encoder;
+extern const FFCodec ff_ffv1_vulkan_encoder;
 extern const FFCodec ff_ffv1_decoder;
 extern const FFCodec ff_ffvhuff_encoder;
 extern const FFCodec ff_ffvhuff_decoder;

libavcodec/ffv1.h

@@ -70,6 +70,8 @@ typedef struct PlaneContext {
 
 #define MAX_SLICES 1024
 
+/* Note - this structure's layout is assumed to stay the same by the
+ * Vulkan encoder. Do not change without updating it. */
 DECLARE_ALIGNED(16, typedef, struct) {
     PlaneContext plane[MAX_PLANES];