[FFmpeg-devel] [PATCH 04/12] fftools/ffmpeg: move InputStream.discard to private data

[Anton Khirnov <anton@khirnov.net>]

It is not used outside of ffmpeg_demux.
---
 fftools/ffmpeg.h       |  1 -
 fftools/ffmpeg_demux.c | 23 +++++++++++++++--------
 2 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h
index 63e72e4fbc..0bab44cefc 100644
--- a/fftools/ffmpeg.h
+++ b/fftools/ffmpeg.h
@@ -339,7 +339,6 @@ typedef struct InputStream {
     int index;
 
     AVStream *st;
-    int discard;             /* true if stream data should be discarded */
     int user_set_discard;
     int decoding_needed;     /* non zero if the packets must be decoded in 'raw_fifo', see DECODING_FOR_* */
 #define DECODING_FOR_OST    1
diff --git a/fftools/ffmpeg_demux.c b/fftools/ffmpeg_demux.c
index 61fb856106..9779580819 100644
--- a/fftools/ffmpeg_demux.c
+++ b/fftools/ffmpeg_demux.c
@@ -63,6 +63,9 @@ typedef struct DemuxStream {
 
     double ts_scale;
 
+    /* true if stream data should be discarded */
+    int discard;
+
     // scheduler returned EOF for this stream
     int finished;
 
@@ -136,7 +139,8 @@ static Demuxer *demuxer_from_ifile(InputFile *f)
 InputStream *ist_find_unused(enum AVMediaType type)
 {
     for (InputStream *ist = ist_iter(NULL); ist; ist = ist_iter(ist)) {
-        if (ist->par->codec_type == type && ist->discard &&
+        DemuxStream *ds = ds_from_ist(ist);
+        if (ist->par->codec_type == type && ds->discard &&
             ist->user_set_discard != AVDISCARD_ALL)
             return ist;
     }
@@ -556,11 +560,14 @@ static void discard_unused_programs(InputFile *ifile)
         AVProgram *p = ifile->ctx->programs[j];
         int discard  = AVDISCARD_ALL;
 
-        for (int k = 0; k < p->nb_stream_indexes; k++)
-            if (!ifile->streams[p->stream_index[k]]->discard) {
+        for (int k = 0; k < p->nb_stream_indexes; k++) {
+            DemuxStream *ds = ds_from_ist(ifile->streams[p->stream_index[k]]);
+
+            if (!ds->discard) {
                 discard = AVDISCARD_DEFAULT;
                 break;
             }
+        }
         p->discard = discard;
     }
 }
@@ -637,7 +644,7 @@ static void *input_thread(void *arg)
            dynamically in stream : we ignore them */
         ds = pkt->stream_index < f->nb_streams ?
              ds_from_ist(f->streams[pkt->stream_index]) : NULL;
-        if (!ds || ds->ist.discard || ds->finished) {
+        if (!ds || ds->discard || ds->finished) {
             report_new_stream(d, pkt);
             av_packet_unref(pkt);
             continue;
@@ -689,7 +696,7 @@ static void demux_final_stats(Demuxer *d)
         DemuxStream  *ds = ds_from_ist(ist);
         enum AVMediaType type = ist->par->codec_type;
 
-        if (ist->discard || type == AVMEDIA_TYPE_ATTACHMENT)
+        if (ds->discard || type == AVMEDIA_TYPE_ATTACHMENT)
             continue;
 
         total_size    += ds->data_size;
@@ -777,8 +784,8 @@ static int ist_use(InputStream *ist, int decoding_needed)
         ds->sch_idx_stream = ret;
     }
 
-    if (ist->discard) {
-        ist->discard = 0;
+    if (ds->discard) {
+        ds->discard = 0;
         d->nb_streams_used++;
     }
 
@@ -1024,7 +1031,7 @@ static int ist_add(const OptionsContext *o, Demuxer *d, AVStream *st)
 
     ist = &ds->ist;
 
-    ist->discard = 1;
+    ds->discard     = 1;
     st->discard  = AVDISCARD_ALL;
     ds->first_dts   = AV_NOPTS_VALUE;
     ds->next_dts    = AV_NOPTS_VALUE;
-- 
2.42.0

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