tiffenc: deprecate using compression_level

libavcodec/tiffenc.c

@@ -231,6 +231,11 @@ static int encode_frame(AVCodecContext * avctx, unsigned char *buf,
     p->key_frame = 1;
     avctx->coded_frame= &s->picture;
 
+#if FF_API_TIFFENC_COMPLEVEL
+    if (avctx->compression_level != FF_COMPRESSION_DEFAULT)
+        av_log(avctx, AV_LOG_WARNING, "Using compression_level to set compression "
+               "algorithm is deprecated. Please use the compression_algo private "
+               "option instead.\n");
     if (avctx->compression_level == 0) {
         s->compr = TIFF_RAW;
     } else if(avctx->compression_level == 2) {
@@ -240,6 +245,7 @@ static int encode_frame(AVCodecContext * avctx, unsigned char *buf,
         s->compr = TIFF_DEFLATE;
 #endif
     }
+#endif
 
     s->width = avctx->width;
     s->height = avctx->height;

libavcodec/version.h

@@ -107,5 +107,9 @@
 #ifndef FF_API_INTERNAL_CONTEXT
 #define FF_API_INTERNAL_CONTEXT (LIBAVCODEC_VERSION_MAJOR < 54)
 #endif
+#ifndef FF_API_TIFFENC_COMPLEVEL
+#define FF_API_TIFFENC_COMPLEVEL (LIBAVCODEC_VERSION_MAJOR < 54)
+#endif
+
 
 #endif /* AVCODEC_VERSION_H */