[FFmpeg-devel] [PATCH 26/35] fftools/ffmpeg: only set OutputStream.frame_number for video encoding

[Anton Khirnov <anton@khirnov.net>]

It is unused otherwise.

Rename the field to vsync_frame_number to better reflect its current
purpose.
---
 fftools/ffmpeg.c     | 10 +++++-----
 fftools/ffmpeg.h     |  3 ++-
 fftools/ffmpeg_mux.c | 10 ----------
 3 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index beb07928bf..ab3665e53c 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -1176,7 +1176,7 @@ static void do_video_out(OutputFile *of,
 
         switch (ost->vsync_method) {
         case VSYNC_VSCFR:
-            if (ost->frame_number == 0 && delta0 >= 0.5) {
+            if (ost->vsync_frame_number == 0 && delta0 >= 0.5) {
                 av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta0));
                 delta = duration;
                 delta0 = 0;
@@ -1184,7 +1184,7 @@ static void do_video_out(OutputFile *of,
             }
         case VSYNC_CFR:
             // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
-            if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
+            if (frame_drop_threshold && delta < frame_drop_threshold && ost->vsync_frame_number) {
                 nb_frames = 0;
             } else if (delta < -1.1)
                 nb_frames = 0;
@@ -1214,7 +1214,7 @@ static void do_video_out(OutputFile *of,
      * But there may be reordering, so we can't throw away frames on encoder
      * flush, we need to limit them here, before they go into encoder.
      */
-    nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
+    nb_frames = FFMIN(nb_frames, ost->max_frames - ost->vsync_frame_number);
     nb0_frames = FFMIN(nb0_frames, nb_frames);
 
     memmove(ost->last_nb0_frames + 1,
@@ -1226,7 +1226,7 @@ static void do_video_out(OutputFile *of,
         nb_frames_drop++;
         av_log(NULL, AV_LOG_VERBOSE,
                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
-               ost->frame_number, ost->st->index, ost->last_frame->pts);
+               ost->vsync_frame_number, ost->st->index, ost->last_frame->pts);
     }
     if (nb_frames > (nb0_frames && ost->last_dropped) + (nb_frames > nb0_frames)) {
         if (nb_frames > dts_error_threshold * 30) {
@@ -1320,7 +1320,7 @@ static void do_video_out(OutputFile *of,
             exit_program(1);
 
         ost->sync_opts++;
-        ost->frame_number++;
+        ost->vsync_frame_number++;
     }
 
     av_frame_unref(ost->last_frame);
diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h
index 106580adb2..3d55370d3a 100644
--- a/fftools/ffmpeg.h
+++ b/fftools/ffmpeg.h
@@ -460,7 +460,8 @@ typedef struct OutputStream {
     int source_index;        /* InputStream index */
     AVStream *st;            /* stream in the output file */
     int encoding_needed;     /* true if encoding needed for this stream */
-    int frame_number;
+    /* number of frames emitted by the video-encoding sync code */
+    int vsync_frame_number;
     /* input pts and corresponding output pts
        for A/V sync */
     struct InputStream *sync_ist; /* input stream to sync against */
diff --git a/fftools/ffmpeg_mux.c b/fftools/ffmpeg_mux.c
index 56444770bf..87c7bdc4e3 100644
--- a/fftools/ffmpeg_mux.c
+++ b/fftools/ffmpeg_mux.c
@@ -232,18 +232,8 @@ static void submit_packet(OutputFile *of, OutputStream *ost, AVPacket *pkt)
 
 void of_submit_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
 {
-    AVStream *st = ost->st;
     int ret;
 
-    if (pkt) {
-        /*
-         * Counting encoded video frames needs to be done separately because of
-         * reordering, see do_video_out().
-         */
-        if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed))
-            ost->frame_number++;
-    }
-
     if (of->mux->header_written) {
         submit_packet(of, ost, pkt);
     } else {
-- 
2.34.1

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