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improved interlacing

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This commit is contained in:
itsmattkc
2021-05-03 22:08:05 +10:00
parent 5af00496c5
commit eb0cbea108
5 changed files with 124 additions and 79 deletions
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app/codec/ffmpeg/ffmpegdecoder.cpp
+5 -16
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@@ -836,24 +836,13 @@ bool FFmpegDecoder::InitScaler(const RetrieveVideoParams& params)
AVFilterContext *last_filter = buffersrc_ctx_;
// Add interlacing filter if necessary
if (filter_params_.src_interlacing != filter_params_.dst_interlacing) {
// Determine what kind of interlacing we'll be doing
if (filter_params_.src_interlacing != VideoParams::kInterlaceNone) {
// Footage is interlaced, our renderer works in progressive so we'll need to de-interlace
AVFilterContext* interlace_filter;
if (filter_params_.dst_interlacing == VideoParams::kInterlaceNone) {
// Deinterlace source
snprintf(filter_args, kFilterArgSz, "mode=1:parity=%s",
GetInterlacingModeInFFmpeg(filter_params_.src_interlacing));
avfilter_graph_create_filter(&interlace_filter, avfilter_get_by_name("yadif"), "yadif", filter_args, nullptr, filter_graph_);
} else if (filter_params_.src_interlacing == VideoParams::kInterlaceNone) {
// We will be interlacing an originally progressive source
snprintf(filter_args, kFilterArgSz, "scan=%s", GetInterlacingModeInFFmpeg(filter_params_.dst_interlacing));
avfilter_graph_create_filter(&interlace_filter, avfilter_get_by_name("interlace"), "interlace", filter_args, nullptr, filter_graph_);
} else {
// We will simply be flipping the fields
snprintf(filter_args, kFilterArgSz, "fieldorder=%s", GetInterlacingModeInFFmpeg(filter_params_.dst_interlacing));
avfilter_graph_create_filter(&interlace_filter, avfilter_get_by_name("fieldorder"), "fieldorder", filter_args, nullptr, filter_graph_);
}
snprintf(filter_args, kFilterArgSz, "mode=1:parity=%s",
GetInterlacingModeInFFmpeg(filter_params_.src_interlacing));
avfilter_graph_create_filter(&interlace_filter, avfilter_get_by_name("yadif"), "yadif", filter_args, nullptr, filter_graph_);
avfilter_link(last_filter, 0, interlace_filter, 0);
last_filter = interlace_filter;