[FFmpeg-devel] [PATCH 1/2] lavf: stop honoring AVFMT_FLAG_AUTO_BSF

[Anton Khirnov]

There should no longer be reason for the callers to disable this.
In-muxer bitstream filtering should be considered a part of the muxer
internals and invisible to the caller.
---
 libavformat/internal.h      | 5 +++++
 libavformat/movenc.c        | 5 +++--
 libavformat/mux.c           | 3 ++-
 libavformat/options_table.h | 2 +-
 4 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/libavformat/internal.h b/libavformat/internal.h
index ce837fefc76..e96bf4cc56d 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -186,6 +186,11 @@ typedef struct FFFormatContext {
      * Contexts and child contexts do not contain a metadata option
      */
     int metafree;
+
+    /**
+     * Disable muxer-level bitstream filtering.
+     */
+    int disable_bsf;
 } FFFormatContext;
 
 static av_always_inline FFFormatContext *ffformatcontext(AVFormatContext *s)
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 064b5419721..a4dd8619dcc 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -6829,6 +6829,7 @@ static int 
mov_create_dvd_sub_decoder_specific_info(MOVTrack *track,
 
 static int mov_init(AVFormatContext *s)
 {
+    FFFormatContext *const si = ffformatcontext(s);
     MOVMuxContext *mov = s->priv_data;
     int i, ret;
 
@@ -6875,9 +6876,9 @@ static int mov_init(AVFormatContext *s)
         mov->flags |= FF_MOV_FLAG_FRAGMENT | FF_MOV_FLAG_EMPTY_MOOV |
                       FF_MOV_FLAG_DEFAULT_BASE_MOOF | 
FF_MOV_FLAG_NEGATIVE_CTS_OFFSETS;
 
-    if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV && s->flags & AVFMT_FLAG_AUTO_BSF) 
{
+    if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
         av_log(s, AV_LOG_VERBOSE, "Empty MOOV enabled; disabling automatic 
bitstream filtering\n");
-        s->flags &= ~AVFMT_FLAG_AUTO_BSF;
+        si->disable_bsf = 1;
     }
 
     if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX && mov->flags & 
FF_MOV_FLAG_SKIP_SIDX) {
diff --git a/libavformat/mux.c b/libavformat/mux.c
index 37fe19358de..fff500dd554 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -1072,9 +1072,10 @@ const AVPacket *ff_interleaved_peek(AVFormatContext *s, 
int stream)
 
 static int check_bitstream(AVFormatContext *s, FFStream *sti, AVPacket *pkt)
 {
+    FFFormatContext *const si = ffformatcontext(s);
     int ret;
 
-    if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
+    if (si->disable_bsf)
         return 1;
 
     if (s->oformat->check_bitstream) {
diff --git a/libavformat/options_table.h b/libavformat/options_table.h
index 86d836cfebb..83e6c6fb3cb 100644
--- a/libavformat/options_table.h
+++ b/libavformat/options_table.h
@@ -39,7 +39,7 @@ static const AVOption avformat_options[] = {
 {"probesize", "set probing size", OFFSET(probesize), AV_OPT_TYPE_INT64, {.i64 
= 5000000 }, 32, INT64_MAX, D},
 {"formatprobesize", "number of bytes to probe file format", 
OFFSET(format_probesize), AV_OPT_TYPE_INT, {.i64 = PROBE_BUF_MAX}, 0, 
INT_MAX-1, D},
 {"packetsize", "set packet size", OFFSET(packet_size), AV_OPT_TYPE_INT, {.i64 
= DEFAULT }, 0, INT_MAX, E},
-{"fflags", NULL, OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = AVFMT_FLAG_AUTO_BSF 
}, INT_MIN, INT_MAX, D|E, "fflags"},
+{"fflags", NULL, OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, INT_MIN, 
INT_MAX, D|E, "fflags"},
 {"flush_packets", "reduce the latency by flushing out packets immediately", 0, 
AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_FLUSH_PACKETS }, INT_MIN, INT_MAX, E, 
"fflags"},
 {"ignidx", "ignore index", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_IGNIDX }, 
INT_MIN, INT_MAX, D, "fflags"},
 {"genpts", "generate pts", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_GENPTS }, 
INT_MIN, INT_MAX, D, "fflags"},
-- 
2.35.1

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