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render: convert yuv to rgb on gpu

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Huge performance improvement
This commit is contained in:
itsmattkc
2022-05-30 15:34:38 -07:00
parent 930848e07a
commit d28202a2db
2 changed files with 135 additions and 12 deletions
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app/codec/ffmpeg/ffmpegdecoder.cpp
+100 -12
View File
@@ -52,6 +52,8 @@ extern "C" {
namespace olive {
QVariant Yuv2RgbShader;
FFmpegDecoder::FFmpegDecoder() :
filter_graph_(nullptr),
buffersrc_ctx_(nullptr),
@@ -143,16 +145,6 @@ TexturePtr FFmpegDecoder::RetrieveVideoInternal(Renderer *renderer, const ration
{
if (AVFramePtr f = RetrieveFrame(timecode, cancelled)) {
if (InitScaler(f.get(), params)) {
int r;
r = av_buffersrc_add_frame_flags(buffersrc_ctx_, f.get(), AV_BUFFERSRC_FLAG_KEEP_REF);
if (r < 0) {
return nullptr;
}
r = av_buffersink_get_frame(buffersink_ctx_, working_frame_);
if (r < 0) {
return nullptr;
}
VideoParams vp(instance_.avstream()->codecpar->width,
instance_.avstream()->codecpar->height,
native_pix_fmt_,
@@ -161,9 +153,105 @@ TexturePtr FFmpegDecoder::RetrieveVideoInternal(Renderer *renderer, const ration
VideoParams::kInterlaceNone,
params.divider);
TexturePtr tex = renderer->CreateTexture(vp, working_frame_->data[0], working_frame_->linesize[0] / vp.GetBytesPerPixel());
QElapsedTimer t;
t.start();
av_frame_unref(working_frame_);
TexturePtr tex = nullptr;
const bool hwscale = true;
// Attempt to use GLSL shader for faster YUV to RGB conversion
if (hwscale) {
AVPixelFormat src_fmt = AVPixelFormat(f.get()->format);
if (src_fmt == AV_PIX_FMT_YUV420P
|| src_fmt == AV_PIX_FMT_YUV422P
|| src_fmt == AV_PIX_FMT_YUV444P
|| src_fmt == AV_PIX_FMT_YUV420P10LE
|| src_fmt == AV_PIX_FMT_YUV422P10LE
|| src_fmt == AV_PIX_FMT_YUV444P10LE
|| src_fmt == AV_PIX_FMT_YUV420P12LE
|| src_fmt == AV_PIX_FMT_YUV422P12LE
|| src_fmt == AV_PIX_FMT_YUV444P12LE) {
if (Yuv2RgbShader.isNull()) {
// Compile shader
Yuv2RgbShader = renderer->CreateNativeShader(ShaderCode(FileFunctions::ReadFileAsString(QStringLiteral(":/shaders/yuv2rgb.frag"))));
}
if (!Yuv2RgbShader.isNull()) {
int px_size;
int bits_per_pixel;
switch (src_fmt) {
case AV_PIX_FMT_YUV420P:
case AV_PIX_FMT_YUV422P:
case AV_PIX_FMT_YUV444P:
default:
px_size = 1;
bits_per_pixel = 8;
break;
case AV_PIX_FMT_YUV420P10LE:
case AV_PIX_FMT_YUV422P10LE:
case AV_PIX_FMT_YUV444P10LE:
px_size = 2;
bits_per_pixel = 10;
break;
case AV_PIX_FMT_YUV420P12LE:
case AV_PIX_FMT_YUV422P12LE:
case AV_PIX_FMT_YUV444P12LE:
px_size = 2;
bits_per_pixel = 12;
break;
}
VideoParams plane_params = vp;
plane_params.set_channel_count(1);
plane_params.set_divider(1);
TexturePtr y_plane = renderer->CreateTexture(plane_params, f->data[0], f->linesize[0] / px_size);
if (src_fmt == AV_PIX_FMT_YUV420P
|| src_fmt == AV_PIX_FMT_YUV422P
|| src_fmt == AV_PIX_FMT_YUV420P10LE
|| src_fmt == AV_PIX_FMT_YUV422P10LE
|| src_fmt == AV_PIX_FMT_YUV420P12LE
|| src_fmt == AV_PIX_FMT_YUV422P12LE) {
plane_params.set_width(plane_params.width()/2);
}
if (src_fmt == AV_PIX_FMT_YUV420P
|| src_fmt == AV_PIX_FMT_YUV420P10LE
|| src_fmt == AV_PIX_FMT_YUV420P12LE) {
plane_params.set_height(plane_params.height()/2);
}
TexturePtr u_plane = renderer->CreateTexture(plane_params, f->data[1], f->linesize[1] / px_size);
TexturePtr v_plane = renderer->CreateTexture(plane_params, f->data[2], f->linesize[2] / px_size);
ShaderJob job;
job.Insert(QStringLiteral("y_channel"), NodeValue(NodeValue::kTexture, QVariant::fromValue(y_plane)));
job.Insert(QStringLiteral("u_channel"), NodeValue(NodeValue::kTexture, QVariant::fromValue(u_plane)));
job.Insert(QStringLiteral("v_channel"), NodeValue(NodeValue::kTexture, QVariant::fromValue(v_plane)));
job.Insert(QStringLiteral("bits_per_pixel"), NodeValue(NodeValue::kInt, bits_per_pixel));
tex = renderer->CreateTexture(vp);
renderer->BlitToTexture(Yuv2RgbShader, job, tex.get(), false);
}
}
}
if (!tex) {
// Fallback to software pixel format conversion
int r;
r = av_buffersrc_add_frame_flags(buffersrc_ctx_, f.get(), AV_BUFFERSRC_FLAG_KEEP_REF);
if (r < 0) {
return nullptr;
}
r = av_buffersink_get_frame(buffersink_ctx_, working_frame_);
if (r < 0) {
return nullptr;
}
tex = renderer->CreateTexture(vp, working_frame_->data[0], working_frame_->linesize[0] / vp.GetBytesPerPixel());
av_frame_unref(working_frame_);
}
return tex;
}