diff mbox series

[FFmpeg-devel,5/6] avformat: remove more unneeded avio_flush() calls

Message ID 20200105131413.22707-5-cus@passwd.hu
State New
Headers show
Series [FFmpeg-devel,1/6] avformat: remove unneded avio_flush() calls before calling avio_close_dyn_buf() | expand

Checks

Context Check Description
andriy/ffmpeg-patchwork success Make fate finished

Commit Message

Marton Balint Jan. 5, 2020, 1:14 p.m. UTC 
These instances are simply redundant or present because avio_flush() used to be
required before doing a seekback. That is no longer the case, aviobuf code does
the flush automatically on seek.

This only affects code which is either disabled for streaming IO contexts or
does no seekbacks after the flush, so this change should have no adverse effect
on streaming.

Signed-off-by: Marton Balint <cus@passwd.hu>
---
 libavformat/asfenc.c      | 1 -
 libavformat/avienc.c      | 1 -
 libavformat/gxfenc.c      | 2 --
 libavformat/segafilmenc.c | 2 --
 libavformat/wavenc.c      | 7 -------
 5 files changed, 13 deletions(-)

Comments

Martin Storsjö Jan. 5, 2020, 8:36 p.m. UTC | #1 
On Sun, 5 Jan 2020, Marton Balint wrote:

> These instances are simply redundant or present because avio_flush() used to be
> required before doing a seekback. That is no longer the case, aviobuf code does
> the flush automatically on seek.
>
> This only affects code which is either disabled for streaming IO contexts or
> does no seekbacks after the flush, so this change should have no adverse effect
> on streaming.
>
> Signed-off-by: Marton Balint <cus@passwd.hu>
> ---
> libavformat/asfenc.c      | 1 -
> libavformat/avienc.c      | 1 -
> libavformat/gxfenc.c      | 2 --
> libavformat/segafilmenc.c | 2 --
> libavformat/wavenc.c      | 7 -------
> 5 files changed, 13 deletions(-)

Possibly ok

// Martin
diff mbox series

Patch

diff --git a/libavformat/asfenc.c b/libavformat/asfenc.c
index d03cff91c0..8eaa9d40ce 100644
--- a/libavformat/asfenc.c
+++ b/libavformat/asfenc.c
@@ -1130,7 +1130,6 @@  static int asf_write_trailer(AVFormatContext *s)
             return ret;
         asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->next_start_sec);
     }
-    avio_flush(s->pb);
 
     if (asf->is_streamed || !(s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
         put_chunk(s, 0x4524, 0, 0); /* end of stream */
diff --git a/libavformat/avienc.c b/libavformat/avienc.c
index 23cc58ea76..d6cfb1b783 100644
--- a/libavformat/avienc.c
+++ b/libavformat/avienc.c
@@ -591,7 +591,6 @@  static void update_odml_entry(AVFormatContext *s, int stream_index, int64_t ix,
     int64_t pos;
     int au_byterate, au_ssize, au_scale;
 
-    avio_flush(pb);
     pos = avio_tell(pb);
 
     /* Updating one entry in the AVI OpenDML master index */
diff --git a/libavformat/gxfenc.c b/libavformat/gxfenc.c
index c9fb0dcd91..e09b8d7625 100644
--- a/libavformat/gxfenc.c
+++ b/libavformat/gxfenc.c
@@ -863,13 +863,11 @@  static int gxf_write_trailer(AVFormatContext *s)
         return ret;
     gxf_write_flt_packet(s);
     gxf_write_umf_packet(s);
-    avio_flush(pb);
     /* update duration in all map packets */
     for (i = 1; i < gxf->map_offsets_nb; i++) {
         avio_seek(pb, gxf->map_offsets[i], SEEK_SET);
         if ((ret = gxf_write_map_packet(s, 1)) < 0)
             return ret;
-        avio_flush(pb);
     }
 
     avio_seek(pb, end, SEEK_SET);
diff --git a/libavformat/segafilmenc.c b/libavformat/segafilmenc.c
index f1048ff808..812d0ad64e 100644
--- a/libavformat/segafilmenc.c
+++ b/libavformat/segafilmenc.c
@@ -362,8 +362,6 @@  static int film_write_header(AVFormatContext *format_context)
 
     avio_wb32(pb, film->packet_count);
 
-    avio_flush(pb);
-
     /* Finally, write out each packet's data to the header */
     packet = film->start;
     while (packet != NULL) {
diff --git a/libavformat/wavenc.c b/libavformat/wavenc.c
index ea7573139c..f6f5710802 100644
--- a/libavformat/wavenc.c
+++ b/libavformat/wavenc.c
@@ -411,17 +411,13 @@  static int wav_write_trailer(AVFormatContext *s)
     int rf64 = 0;
     int ret = 0;
 
-    avio_flush(pb);
-
     if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
         if (wav->write_peak != PEAK_ONLY && avio_tell(pb) - wav->data < UINT32_MAX) {
             ff_end_tag(pb, wav->data);
-            avio_flush(pb);
         }
 
         if (wav->write_peak && wav->peak_output) {
             ret = peak_write_chunk(s);
-            avio_flush(pb);
         }
 
         /* update file size */
@@ -433,8 +429,6 @@  static int wav_write_trailer(AVFormatContext *s)
             avio_seek(pb, 4, SEEK_SET);
             avio_wl32(pb, (uint32_t)(file_size - 8));
             avio_seek(pb, file_size, SEEK_SET);
-
-            avio_flush(pb);
         } else {
             av_log(s, AV_LOG_ERROR,
                    "Filesize %"PRId64" invalid for wav, output file will be broken\n",
@@ -454,7 +448,6 @@  static int wav_write_trailer(AVFormatContext *s)
             } else {
                 avio_wl32(pb, number_of_samples);
                 avio_seek(pb, file_size, SEEK_SET);
-                avio_flush(pb);
             }
         }