[FFmpeg-devel] [PATCH 28/28] ffmpeg_mux: move processing AV_PKT_DATA_QUALITY_STATS to do_video_stats()

[Anton Khirnov <anton@khirnov.net>]

This is a more appropriate place for this code, since the values we read
from AV_PKT_DATA_QUALITY_STATS side data are primarily written into
video stats.

Rename the function to update_video_stats() to better reflect its new
purpose.
---
 fftools/ffmpeg_mux.c | 37 +++++++++++++++++++------------------
 1 file changed, 19 insertions(+), 18 deletions(-)

diff --git a/fftools/ffmpeg_mux.c b/fftools/ffmpeg_mux.c
index 21771b3ae6..52986b002a 100644
--- a/fftools/ffmpeg_mux.c
+++ b/fftools/ffmpeg_mux.c
@@ -56,13 +56,28 @@ struct Muxer {
 
 static int want_sdp = 1;
 
-static void do_video_stats(OutputStream *ost, const AVPacket *pkt)
+static void update_video_stats(OutputStream *ost, const AVPacket *pkt, int write_vstats)
 {
+    const uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
+                                                NULL);
     AVCodecContext *enc = ost->enc_ctx;
     int frame_number;
     double ti1, bitrate, avg_bitrate;
 
-    /* this is executed just the first time do_video_stats is called */
+    ost->quality = sd ? AV_RL32(sd) : -1;
+    ost->pict_type = sd ? sd[4] : AV_PICTURE_TYPE_NONE;
+
+    for (int i = 0; i < FF_ARRAY_ELEMS(ost->error); i++) {
+        if (sd && i < sd[5])
+            ost->error[i] = AV_RL64(sd + 8 + 8 * i);
+        else
+            ost->error[i] = -1;
+    }
+
+    if (!write_vstats)
+        return;
+
+    /* this is executed just the first time update_video_stats is called */
     if (!vstats_file) {
         vstats_file = fopen(vstats_filename, "w");
         if (!vstats_file) {
@@ -155,19 +170,6 @@ static void write_packet(OutputFile *of, OutputStream *ost, AVPacket *pkt)
         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 
     if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
-        int i;
-        uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
-                                              NULL);
-        ost->quality = sd ? AV_RL32(sd) : -1;
-        ost->pict_type = sd ? sd[4] : AV_PICTURE_TYPE_NONE;
-
-        for (i = 0; i<FF_ARRAY_ELEMS(ost->error); i++) {
-            if (sd && i < sd[5])
-                ost->error[i] = AV_RL64(sd + 8 + 8*i);
-            else
-                ost->error[i] = -1;
-        }
-
         if (ost->frame_rate.num && ost->is_cfr) {
             if (pkt->duration > 0)
                 av_log(NULL, AV_LOG_WARNING, "Overriding packet duration by frame rate, this should not happen\n");
@@ -220,9 +222,8 @@ static void write_packet(OutputFile *of, OutputStream *ost, AVPacket *pkt)
     ost->data_size += pkt->size;
     ost->packets_written++;
 
-    if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
-        ost->encoding_needed && vstats_filename)
-        do_video_stats(ost, pkt);
+    if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed)
+        update_video_stats(ost, pkt, !!vstats_filename);
 
     pkt->stream_index = ost->index;
 
-- 
2.33.0

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