[FFmpeg-cvslog] fftools/ffmpeg_dec: override video SAR with AVCodecParameters value

[Anton Khirnov]

ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Wed Jan 17 10:33:00 2024 +0100| [924a6f3cc7788e2d258348b1547a49805091ea2d] | committer: Anton Khirnov

fftools/ffmpeg_dec: override video SAR with AVCodecParameters value

Rather than access the AVStream one.

This is a step towards decoupling Decoder and InputStream.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=924a6f3cc7788e2d258348b1547a49805091ea2d
---

 fftools/ffmpeg_dec.c   | 9 +++++++--
 fftools/ffmpeg_demux.c | 3 +++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/fftools/ffmpeg_dec.c b/fftools/ffmpeg_dec.c
index c80b6eddea..2fb9e45529 100644
--- a/fftools/ffmpeg_dec.c
+++ b/fftools/ffmpeg_dec.c
@@ -42,6 +42,9 @@ typedef struct DecoderPriv {
     AVFrame         *frame;
     AVPacket        *pkt;
 
+    // override output video sample aspect ratio with this value
+    AVRational       sar_override;
+
     enum AVPixelFormat hwaccel_pix_fmt;
 
     // pts/estimated duration of the last decoded frame
@@ -311,8 +314,8 @@ static int video_frame_process(InputStream *ist, AVFrame *frame)
                frame->time_base.num, frame->time_base.den);
     }
 
-    if (ist->st->sample_aspect_ratio.num)
-        frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
+    if (dp->sar_override.num)
+        frame->sample_aspect_ratio = dp->sar_override;
 
     return 0;
 }
@@ -922,6 +925,8 @@ int dec_open(InputStream *ist, Scheduler *sch, unsigned sch_idx,
             return AVERROR(ENOMEM);
     }
 
+    dp->sar_override = ist->par->sample_aspect_ratio;
+
     dp->dec_ctx = avcodec_alloc_context3(codec);
     if (!dp->dec_ctx)
         return AVERROR(ENOMEM);
diff --git a/fftools/ffmpeg_demux.c b/fftools/ffmpeg_demux.c
index 11db118b72..a58217223b 100644
--- a/fftools/ffmpeg_demux.c
+++ b/fftools/ffmpeg_demux.c
@@ -1336,6 +1336,9 @@ static int ist_add(const OptionsContext *o, Demuxer *d, AVStream *st)
         return ret;
     }
 
+    if (ist->st->sample_aspect_ratio.num)
+        ist->par->sample_aspect_ratio = ist->st->sample_aspect_ratio;
+
     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsfs, ic, st);
     if (bsfs) {
         ret = av_bsf_list_parse_str(bsfs, &ds->bsf);