On 2/16/22 7:49 PM, Stephen Hutchinson wrote:
Trying to be clever about determining between interface version 8 and 8.1 ended up with pre-8.1 versions of AviSynth+ segfaulting.The amount of time between interface version 8.1 and 9 is small, so just restrict the frameprop awareness to version 9 and call it a day. --- libavformat/avisynth.c | 23 ++++++----------------- 1 file changed, 6 insertions(+), 17 deletions(-) diff --git a/libavformat/avisynth.c b/libavformat/avisynth.c index 8bc39869a3..b345f5efe2 100644 --- a/libavformat/avisynth.c +++ b/libavformat/avisynth.c @@ -502,24 +502,13 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st) /* Read AviSynth+'s frame properties to set additional info. * * Due to a bug preventing the C interface from accessing frame - * properties in earlier versions of interface version 8, only - * enable this if we detect version 8.1 at the minimum. */ + * properties in earlier versions of interface version 8, and + * previous attempts at being clever resulting in pre-8 versions + * of AviSynth+ segfaulting, only enable this if we detect + * version 9 at the minimum. Technically, 8.1 works, but the time + * distance between 8.1 and 9 is very small, so just restrict it to 9. */- if (!avs_library.avs_get_env_property) {- av_log(s, AV_LOG_TRACE, "%s\n", - "avs_get_env_property does not exist in AviSynth library; frame properties won't be checked."); - frameprop = false; - } else { - if (avs_library.avs_get_env_property(avs->env, AVS_AEP_INTERFACE_BUGFIX)) { - av_log(s, AV_LOG_TRACE, "%s\n", "Using interface version 8.1 or higher, reading frame properties."); - frameprop = true; - } else { - av_log(s, AV_LOG_TRACE, "%s\n", "Using interface version 8.0, need 8.1+ to read frame properties."); - frameprop = false; - } - } - - if (frameprop = true) { + if (avs_library.avs_get_version(avs->clip) >= 9) {frame = avs_library.avs_get_frame(avs->clip, framedata);avsmap = avs_library.avs_get_frame_props_ro(avs->env, frame);
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