ffmpeg: use a AVDictionary instead of the context to move swr parameters around

This avoids per parameter changes in ffmpeg at the cost of making access
somewhat more annoying.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 4 insertions, 6 deletions

diff --git a/ffmpeg_filter.c b/ffmpeg_filter.c
index a88e57c38c..7a9efeaf05 100644
--- a/ffmpeg_filter.c
+++ b/ffmpeg_filter.c
@@ -739,12 +739,10 @@ int configure_filtergraph(FilterGraph *fg)
         fg->graph->scale_sws_opts = av_strdup(args);
 
         args[0] = 0;
-        if (ost->swr_filter_type != SWR_FILTER_TYPE_KAISER)
-            av_strlcatf(args, sizeof(args), "filter_type=%d:", (int)ost->swr_filter_type);
-        if (ost->swr_dither_method)
-            av_strlcatf(args, sizeof(args), "dither_method=%d:", (int)ost->swr_dither_method);
-        if (ost->swr_dither_scale != 1.0)
-            av_strlcatf(args, sizeof(args), "dither_scale=%f:", ost->swr_dither_scale);
+        while ((e = av_dict_get(ost->swr_opts, "", e,
+                                AV_DICT_IGNORE_SUFFIX))) {
+            av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
+        }
         if (strlen(args))
             args[strlen(args)-1] = 0;
         av_opt_set(fg->graph, "aresample_swr_opts", args, 0);