From c688ddc067e0d9ade731b3adb5c6fde259cbc5f6 Mon Sep 17 00:00:00 2001
From: Niklas Haas <git@haasn.dev>
Date: Tue, 28 Jun 2022 15:13:04 +0200
Subject: [PATCH] avcodec: add common fflcms2 boilerplate

Handling this in general code makes more sense than handling it in
individual codec files, because it would be a lot of unnecessary code
duplication for the plenty of formats that support exporting ICC
profiles (jpg, png, tiff, webp, jxl, ...).

encode.c and decode.c will be in charge of initializing this state as
needed, so we merely need to make sure to uninit it afterwards from the
common destructor path.

Signed-off-by: Niklas Haas <git@haasn.dev>
---
 configure             | 2 +-
 libavcodec/Makefile   | 1 +
 libavcodec/avcodec.c  | 4 ++++
 libavcodec/decode.c   | 4 ++++
 libavcodec/internal.h | 8 ++++++++
 5 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 6629d14099..8c7e8c9d1d 100755
--- a/configure
+++ b/configure
@@ -3814,7 +3814,7 @@ swresample_suggest="libm libsoxr stdatomic"
 swscale_deps="avutil"
 swscale_suggest="libm stdatomic"
 
-avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
+avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs lcms2_extralibs"
 avfilter_extralibs="pthreads_extralibs"
 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
 
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 6751b6b591..aff7752856 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -114,6 +114,7 @@ OBJS-$(CONFIG_INTRAX8)                 += intrax8.o intrax8dsp.o msmpeg4data.o
 OBJS-$(CONFIG_IVIDSP)                  += ivi_dsp.o
 OBJS-$(CONFIG_JNI)                     += ffjni.o jni.o
 OBJS-$(CONFIG_JPEGTABLES)              += jpegtables.o
+OBJS-$(CONFIG_LCMS2)                   += fflcms2.o
 OBJS-$(CONFIG_LLAUDDSP)                += lossless_audiodsp.o
 OBJS-$(CONFIG_LLVIDDSP)                += lossless_videodsp.o
 OBJS-$(CONFIG_LLVIDENCDSP)             += lossless_videoencdsp.o
diff --git a/libavcodec/avcodec.c b/libavcodec/avcodec.c
index 4bc18183a9..c9105c5df2 100644
--- a/libavcodec/avcodec.c
+++ b/libavcodec/avcodec.c
@@ -479,6 +479,10 @@ av_cold int avcodec_close(AVCodecContext *avctx)
 
         av_channel_layout_uninit(&avci->initial_ch_layout);
 
+#if CONFIG_LCMS2
+        ff_icc_context_uninit(&avci->icc);
+#endif
+
         av_freep(&avctx->internal);
     }
 
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 0613681f89..8922222271 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -49,6 +49,10 @@
 #include "internal.h"
 #include "thread.h"
 
+#if CONFIG_LCMS2
+# include "fflcms2.h"
+#endif
+
 static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
 {
     int ret;
diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 6fb4e1b9af..8809a7079a 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -33,6 +33,10 @@
 #include "avcodec.h"
 #include "config.h"
 
+#if CONFIG_LCMS2
+# include "fflcms2.h"
+#endif
+
 #define FF_SANE_NB_CHANNELS 512U
 
 #if HAVE_SIMD_ALIGN_64
@@ -146,6 +150,10 @@ typedef struct AVCodecInternal {
     uint64_t initial_channel_layout;
 #endif
     AVChannelLayout initial_ch_layout;
+
+#if CONFIG_LCMS2
+    FFIccContext icc; /* used to read and write embedded ICC profiles */
+#endif
 } AVCodecInternal;
 
 /**