Merge commit '4f7723cb3b913c577842a5bb088c804ddacac8df'

* commit '4f7723cb3b913c577842a5bb088c804ddacac8df':
  movenc: Add an option for skipping writing the mfra/tfra/mfro trailer

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

libavformat/movenc.c

@@ -72,6 +72,7 @@ static const AVOption options[] = {
     { "write_colr", "Write colr atom (Experimental, may be renamed or changed, do not use from scripts)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_WRITE_COLR}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
     { "write_gama", "Write deprecated gama atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_WRITE_GAMA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
     { "use_metadata_tags", "Use mdta atom for metadata.", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_USE_MDTA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
+    { "skip_trailer", "Skip writing the mfra/tfra/mfro trailer for fragmented files", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SKIP_TRAILER}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
     FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
     { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
     { "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
@@ -3934,6 +3935,20 @@ static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,
     return 0;
 }
 
+static void mov_prune_frag_info(MOVMuxContext *mov, int tracks, int max)
+{
+    int i;
+    for (i = 0; i < mov->nb_streams; i++) {
+        MOVTrack *track = &mov->tracks[i];
+        if ((tracks >= 0 && i != tracks) || !track->entry)
+            continue;
+        if (track->nb_frag_info > max) {
+            memmove(track->frag_info, track->frag_info + (track->nb_frag_info - max), max * sizeof(*track->frag_info));
+            track->nb_frag_info = max;
+        }
+    }
+}
+
 static int mov_write_tfdt_tag(AVIOContext *pb, MOVTrack *track)
 {
     int64_t pos = avio_tell(pb);
@@ -4119,8 +4134,16 @@ static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks,
     if (mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_GLOBAL_SIDX))
         mov_write_sidx_tags(pb, mov, tracks, moof_size + 8 + mdat_size);
 
-    if ((ret = mov_add_tfra_entries(pb, mov, tracks, moof_size + 8 + mdat_size)) < 0)
-        return ret;
+    if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX ||
+        !(mov->flags & FF_MOV_FLAG_SKIP_TRAILER) ||
+        mov->ism_lookahead) {
+        if ((ret = mov_add_tfra_entries(pb, mov, tracks, moof_size + 8 + mdat_size)) < 0)
+            return ret;
+        if (!(mov->flags & FF_MOV_FLAG_GLOBAL_SIDX) &&
+            mov->flags & FF_MOV_FLAG_SKIP_TRAILER) {
+            mov_prune_frag_info(mov, tracks, mov->ism_lookahead + 1);
+        }
+    }
 
     return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);
 }
@@ -6150,7 +6173,7 @@ static int mov_write_trailer(AVFormatContext *s)
             avio_seek(pb, end, SEEK_SET);
             avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
             mov_write_mfra_tag(pb, mov);
-        } else {
+        } else if (!(mov->flags & FF_MOV_FLAG_SKIP_TRAILER)) {
             avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
             mov_write_mfra_tag(pb, mov);
         }

libavformat/movenc.h

@@ -240,6 +240,7 @@ typedef struct MOVMuxContext {
 #define FF_MOV_FLAG_WRITE_COLR            (1 << 15)
 #define FF_MOV_FLAG_WRITE_GAMA            (1 << 16)
 #define FF_MOV_FLAG_USE_MDTA              (1 << 17)
+#define FF_MOV_FLAG_SKIP_TRAILER          (1 << 18)
 
 int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt);