fftools/ffmpeg_mux: move muxing queue fields from OutputStream to MuxStream

They are private to the muxer and do not need to be visible outside of
it.

fftools/ffmpeg.h

@@ -596,11 +596,6 @@ typedef struct OutputStream {
     /* packet quality factor */
     int quality;
 
-    int max_muxing_queue_size;
-
-    /* Threshold after which max_muxing_queue_size will be in effect */
-    size_t muxing_queue_data_threshold;
-
     /* packet picture type */
     int pict_type;
 

fftools/ffmpeg_mux.c

@@ -264,8 +264,8 @@ static int queue_packet(Muxer *mux, OutputStream *ost, AVPacket *pkt)
         size_t cur_size = av_fifo_can_read(ms->muxing_queue);
         size_t pkt_size = pkt ? pkt->size : 0;
         unsigned int are_we_over_size =
-            (ms->muxing_queue_data_size + pkt_size) > ost->muxing_queue_data_threshold;
-        size_t limit    = are_we_over_size ? ost->max_muxing_queue_size : SIZE_MAX;
+            (ms->muxing_queue_data_size + pkt_size) > ms->muxing_queue_data_threshold;
+        size_t limit    = are_we_over_size ? ms->max_muxing_queue_size : SIZE_MAX;
         size_t new_size = FFMIN(2 * cur_size, limit);
 
         if (new_size <= cur_size) {

fftools/ffmpeg_mux.h

@@ -48,6 +48,11 @@ typedef struct MuxStream {
      */
     size_t muxing_queue_data_size;
 
+    int max_muxing_queue_size;
+
+    /* Threshold after which max_muxing_queue_size will be in effect */
+    size_t muxing_queue_data_threshold;
+
     /* dts of the last packet sent to the muxer, in the stream timebase
      * used for making up missing dts values */
     int64_t last_mux_dts;

fftools/ffmpeg_mux_init.c

@@ -330,11 +330,11 @@ static OutputStream *new_output_stream(Muxer *mux, OptionsContext *o,
     MATCH_PER_STREAM_OPT(disposition, str, ost->disposition, oc, st);
     ost->disposition = av_strdup(ost->disposition);
 
-    ost->max_muxing_queue_size = 128;
-    MATCH_PER_STREAM_OPT(max_muxing_queue_size, i, ost->max_muxing_queue_size, oc, st);
+    ms->max_muxing_queue_size = 128;
+    MATCH_PER_STREAM_OPT(max_muxing_queue_size, i, ms->max_muxing_queue_size, oc, st);
 
-    ost->muxing_queue_data_threshold = 50*1024*1024;
-    MATCH_PER_STREAM_OPT(muxing_queue_data_threshold, i, ost->muxing_queue_data_threshold, oc, st);
+    ms->muxing_queue_data_threshold = 50*1024*1024;
+    MATCH_PER_STREAM_OPT(muxing_queue_data_threshold, i, ms->muxing_queue_data_threshold, oc, st);
 
     MATCH_PER_STREAM_OPT(bits_per_raw_sample, i, ost->bits_per_raw_sample,
                          oc, st);