fix #888373

2 files changed, 12 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index dffc0ca..83341f3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,6 @@
 Thu Jul 12 22:26:36 CEST 2018
         Fix potential infinite loop in mpeg extractor.
+        Fix build issue with FFmpeg 4.0 (Debian #888373).
         Releasing GNU libextractor 1.7. -CG
 
 Thu Jul 12 21:23:43 CEST 2018
diff --git a/src/plugins/thumbnailffmpeg_extractor.c b/src/plugins/thumbnailffmpeg_extractor.c
index c2af240..1b7347a 100644
--- a/src/plugins/thumbnailffmpeg_extractor.c
+++ b/src/plugins/thumbnailffmpeg_extractor.c
@@ -107,7 +107,17 @@
 /**
  * Number of bytes to feed to libav in one go, with padding (padding is zeroed).
  */
+#ifdef AV_INPUT_BUFFER_PADDING_SIZE
+#define PADDED_BUFFER_SIZE (BUFFER_SIZE + AV_INPUT_BUFFER_PADDING_SIZE)
+#else
+/* legacy */
 #define PADDED_BUFFER_SIZE (BUFFER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE)
+#endif
+
+#ifndef AV_CODEC_FLAG_QSCALE
+#define AV_CODEC_FLAG_QSCALE CODEC_FLAG_QSCALE
+#endif
+
 
 /**
  * Global handle to MAGIC data.
@@ -355,7 +365,7 @@ create_thumbnail (AVCodecContext *pCodecCtx, int src_width, int src_height,
    encoder_codec_ctx->mb_lmin = encoder_codec_ctx->qmin * FF_QP2LAMBDA;
    encoder_codec_ctx->mb_lmax = encoder_codec_ctx->qmax * FF_QP2LAMBDA;
 #endif
-   encoder_codec_ctx->flags          = CODEC_FLAG_QSCALE;
+   encoder_codec_ctx->flags          = AV_CODEC_FLAG_QSCALE;
    encoder_codec_ctx->global_quality = encoder_codec_ctx->qmin * FF_QP2LAMBDA;
 
    dst_frame->pts     = 1;