[FFmpeg-cvslog] avformat/demux: propagate the internal decoder's bitrate properties

[James Almer]

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Fri Sep  1 13:55:48 2023 -0300| [8e972b13a97604d570ef26e8ac46767191d74f6f] | committer: James Almer

avformat/demux: propagate the internal decoder's bitrate properties

Muxers may access this information through cpb properties within the stream's
side data.

Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8e972b13a97604d570ef26e8ac46767191d74f6f
---

 libavformat/demux.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/libavformat/demux.c b/libavformat/demux.c
index b218f64574..fcd5daf699 100644
--- a/libavformat/demux.c
+++ b/libavformat/demux.c
@@ -2974,6 +2974,23 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
             ret = add_coded_side_data(st, sti->avctx);
             if (ret < 0)
                 goto find_stream_info_err;
+
+            if (sti->avctx->rc_buffer_size > 0 || sti->avctx->rc_max_rate > 0 ||
+                sti->avctx->rc_min_rate) {
+                size_t cpb_size;
+                AVCPBProperties *props = av_cpb_properties_alloc(&cpb_size);
+                if (props) {
+                    if (sti->avctx->rc_buffer_size > 0)
+                        props->buffer_size = sti->avctx->rc_buffer_size;
+                    if (sti->avctx->rc_min_rate > 0)
+                        props->min_bitrate = sti->avctx->rc_min_rate;
+                    if (sti->avctx->rc_max_rate > 0)
+                        props->max_bitrate = sti->avctx->rc_max_rate;
+                    if (av_stream_add_side_data(st, AV_PKT_DATA_CPB_PROPERTIES,
+                                                (uint8_t *)props, cpb_size))
+                        av_free(props);
+                }
+            }
         }
 
         sti->avctx_inited = 0;