fftools/ffmpeg_demux: move InputFile.ts_offset_discont,last_ts to private data

They are no longer used outside of ffmpeg_demux.

fftools/ffmpeg.h

@@ -455,11 +455,6 @@ typedef struct InputFile {
      */
     int64_t start_time_effective;
     int64_t ts_offset;
-    /**
-     * Extra timestamp offset added by discontinuity handling.
-     */
-    int64_t ts_offset_discont;
-    int64_t last_ts;
     int64_t start_time;   /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
     int64_t recording_time;
 

fftools/ffmpeg_demux.c

@@ -90,6 +90,12 @@ typedef struct Demuxer {
 
     int64_t wallclock_start;
 
+    /**
+     * Extra timestamp offset added by discontinuity handling.
+     */
+    int64_t ts_offset_discont;
+    int64_t last_ts;
+
     /* number of times input stream should be looped */
     int loop;
     /* actual duration of the longest stream in a file at the moment when
@@ -205,9 +211,10 @@ static int seek_to_start(Demuxer *d)
     return ret;
 }
 
-static void ts_discontinuity_detect(InputFile *ifile, InputStream *ist,
+static void ts_discontinuity_detect(Demuxer *d, InputStream *ist,
                                     AVPacket *pkt)
 {
+    InputFile *ifile = &d->f;
     DemuxStream *ds = ds_from_ist(ist);
     const int fmt_is_discont = ifile->ctx->iformat->flags & AVFMT_TS_DISCONT;
     int disable_discontinuity_correction = copy_ts;
@@ -228,13 +235,13 @@ static void ts_discontinuity_detect(InputFile *ifile, InputStream *ist,
         if (fmt_is_discont) {
             if (FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE ||
                 pkt_dts + AV_TIME_BASE/10 < ds->dts) {
-                ifile->ts_offset_discont -= delta;
+                d->ts_offset_discont -= delta;
                 av_log(NULL, AV_LOG_WARNING,
                        "timestamp discontinuity for stream #%d:%d "
                        "(id=%d, type=%s): %"PRId64", new offset= %"PRId64"\n",
                        ist->file_index, ist->st->index, ist->st->id,
                        av_get_media_type_string(ist->par->codec_type),
-                       delta, ifile->ts_offset_discont);
+                       delta, d->ts_offset_discont);
                 pkt->dts -= av_rescale_q(delta, AV_TIME_BASE_Q, pkt->time_base);
                 if (pkt->pts != AV_NOPTS_VALUE)
                     pkt->pts -= av_rescale_q(delta, AV_TIME_BASE_Q, pkt->time_base);
@@ -258,26 +265,26 @@ static void ts_discontinuity_detect(InputFile *ifile, InputStream *ist,
             }
         }
     } else if (ds->next_dts == AV_NOPTS_VALUE && !copy_ts &&
-               fmt_is_discont && ifile->last_ts != AV_NOPTS_VALUE) {
-        int64_t delta = pkt_dts - ifile->last_ts;
+               fmt_is_discont && d->last_ts != AV_NOPTS_VALUE) {
+        int64_t delta = pkt_dts - d->last_ts;
         if (FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE) {
-            ifile->ts_offset_discont -= delta;
+            d->ts_offset_discont -= delta;
             av_log(NULL, AV_LOG_DEBUG,
                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
-                   delta, ifile->ts_offset_discont);
+                   delta, d->ts_offset_discont);
             pkt->dts -= av_rescale_q(delta, AV_TIME_BASE_Q, pkt->time_base);
             if (pkt->pts != AV_NOPTS_VALUE)
                 pkt->pts -= av_rescale_q(delta, AV_TIME_BASE_Q, pkt->time_base);
         }
     }
 
-    ifile->last_ts = av_rescale_q(pkt->dts, pkt->time_base, AV_TIME_BASE_Q);
+    d->last_ts = av_rescale_q(pkt->dts, pkt->time_base, AV_TIME_BASE_Q);
 }
 
-static void ts_discontinuity_process(InputFile *ifile, InputStream *ist,
+static void ts_discontinuity_process(Demuxer *d, InputStream *ist,
                                      AVPacket *pkt)
 {
-    int64_t offset = av_rescale_q(ifile->ts_offset_discont, AV_TIME_BASE_Q,
+    int64_t offset = av_rescale_q(d->ts_offset_discont, AV_TIME_BASE_Q,
                                   pkt->time_base);
 
     // apply previously-detected timestamp-discontinuity offset
@@ -291,7 +298,7 @@ static void ts_discontinuity_process(InputFile *ifile, InputStream *ist,
     if ((ist->par->codec_type == AVMEDIA_TYPE_VIDEO ||
          ist->par->codec_type == AVMEDIA_TYPE_AUDIO) &&
         pkt->dts != AV_NOPTS_VALUE)
-        ts_discontinuity_detect(ifile, ist, pkt);
+        ts_discontinuity_detect(d, ist, pkt);
 }
 
 static int ist_dts_update(DemuxStream *ds, AVPacket *pkt)
@@ -429,7 +436,7 @@ static int ts_fixup(Demuxer *d, AVPacket *pkt)
     SHOW_TS_DEBUG("demuxer+tsfixup");
 
     // detect and try to correct for timestamp discontinuities
-    ts_discontinuity_process(ifile, ist, pkt);
+    ts_discontinuity_process(d, ist, pkt);
 
     // update estimated/predicted dts
     ret = ist_dts_update(ds, pkt);