Fix build on older libavcodec versions

avcodec_profile_name() was added only a week ago or so.

TOOLS/old-configure

@@ -974,6 +974,7 @@ cat > $TMPC << EOF
 #define HAVE_GPL3 1
 #define HAVE_WIN32 0
 #define HAVE_GL_DXINTEROP 0
+#define HAVE_AVCODEC_PROFILE_NAME 1
 
 #ifdef __OpenBSD__
 #define DEFAULT_CDROM_DEVICE "/dev/rcd0c"

video/decode/vd_lavc.c

@@ -529,9 +529,11 @@ static enum AVPixelFormat get_format_hwdec(struct AVCodecContext *avctx,
         MP_VERBOSE(vd, " %s", av_get_pix_fmt_name(fmt[i]));
     MP_VERBOSE(vd, "\n");
 
+#if HAVE_AVCODEC_PROFILE_NAME
     const char *profile = avcodec_profile_name(avctx->codec_id, avctx->profile);
     MP_VERBOSE(vd, "Codec profile: %s (0x%x)\n", profile ? profile : "unknown",
                avctx->profile);
+#endif
 
     assert(ctx->hwdec);
 

wscript

@@ -477,6 +477,12 @@ FFmpeg/Libav libraries. You need at least {0}. Aborting.".format(libav_versions_
         'func': check_statement('libavcodec/avcodec.h',
                                 'AVSubtitleRect r = {.linesize={0}}',
                                 use='libav'),
+    }, {
+        'name': 'avcodec-profile-name',
+        'desc': 'libavcodec avcodec_profile_name()',
+        'func': check_statement('libavcodec/avcodec.h',
+                                'avcodec_profile_name(0,0)',
+                                use='libav'),
     },
 ]