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render: reimplemented deinterlacing with new shader-based format conversion

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This commit is contained in:
itsmattkc
2022-08-08 14:05:11 -07:00
parent a270b1e3e1
commit 30b64d9b9c
5 changed files with 58 additions and 3 deletions
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app/codec/ffmpeg/ffmpegdecoder.cpp
+39
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@@ -79,6 +79,7 @@ bool FFmpegDecoder::OpenInternal()
working_frame_ = av_frame_alloc();
working_packet_ = av_packet_alloc();
frame_rate_tb_ = rational::NaN;
return true;
}
@@ -243,6 +244,29 @@ TexturePtr FFmpegDecoder::RetrieveVideoInternal(const RetrieveVideoParams &p)
job.Insert(QStringLiteral("yuv_cgv"), NodeValue(NodeValue::kInt, yuv_coeffs[3]));
job.Insert(QStringLiteral("yuv_cbu"), NodeValue(NodeValue::kInt, yuv_coeffs[1]));
int interlacing = 0;
if (p.src_interlacing != VideoParams::kInterlaceNone) {
if (frame_rate_tb_.isNull()) {
frame_rate_tb_ = av_guess_frame_rate(instance_.fmt_ctx(), instance_.avstream(), f.get());
// Double frame rate for interlaced fields
frame_rate_tb_ *= 2;
// Flip frame rate so it can be used as a timebase
frame_rate_tb_.flip();
}
int64_t req = Timecode::time_to_timestamp(p.time, frame_rate_tb_);
int64_t frm = Timecode::rescale_timestamp(f->pts - instance_.avstream()->start_time, instance_.avstream()->time_base, frame_rate_tb_);
bool first = (req == frm);
bool top_first = (p.src_interlacing == VideoParams::kInterlacedTopFirst);
interlacing = (first == top_first) ? 1 : 2;
}
job.Insert(QStringLiteral("interlacing"), NodeValue(NodeValue::kInt, interlacing));
job.Insert(QStringLiteral("pixel_height"), NodeValue(NodeValue::kInt, f->height));
tex = p.renderer->CreateTexture(vp);
p.renderer->BlitToTexture(Yuv2RgbShader, job, tex.get(), false);
}
@@ -896,6 +920,7 @@ bool FFmpegDecoder::InitScaler(AVFrame *input, const RetrieveVideoParams& params
if (params.divider == filter_params_.divider
&& params.force_range == filter_params_.force_range
&& params.maximum_format == filter_params_.maximum_format
&& params.src_interlacing == filter_params_.src_interlacing
&& filter_graph_
&& input_fmt_ == input->format) {
// We have an appropriate filter for these parameters, just return true
@@ -962,6 +987,20 @@ bool FFmpegDecoder::InitScaler(AVFrame *input, const RetrieveVideoParams& params
// Link filters as necessary
AVFilterContext *last_filter = buffersrc_ctx_;
// Add deinterlace filter if necessary
if (filter_params_.src_interlacing != VideoParams::kInterlaceNone) {
AVFilterContext* deint_filter;
snprintf(filter_args, kFilterArgSz, "mode=1:parity=%s",
filter_params_.src_interlacing == VideoParams::kInterlacedTopFirst ? "0" : "1");
avfilter_graph_create_filter(&deint_filter, avfilter_get_by_name("yadif"), "deint", filter_args, nullptr, filter_graph_);
avfilter_link(last_filter, 0, deint_filter, 0);
last_filter = deint_filter;
}
// Add scale filter if necessary
int dst_width, dst_height;
if (filter_params_.divider > 1) {