oak-team/oak-editor
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

render: convert yuv to rgb on gpu

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files
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;
}
app/shaders/yuv2rgb.frag
+35
View File
@@ -0,0 +1,35 @@
uniform sampler2D y_channel;
uniform sampler2D u_channel;
uniform sampler2D v_channel;
uniform int bits_per_pixel;
in vec2 ove_texcoord;
out vec4 frag_color;
void main() {
vec4 rgba;
vec3 yuv;
yuv.r = texture(y_channel, ove_texcoord).r;
yuv.g = texture(u_channel, ove_texcoord).r;
yuv.b = texture(v_channel, ove_texcoord).r;
if (bits_per_pixel == 10) {
yuv *= 64.0;
} else if (bits_per_pixel == 12) {
yuv *= 16.0;
}
yuv.r = 1.1643 * (yuv.r - 0.0625);
yuv.g = yuv.g - 0.5;
yuv.b = yuv.b - 0.5;
rgba.r = yuv.r + 1.5958 * yuv.b;
rgba.g = yuv.r - 0.39173 * yuv.g - 0.81290 * yuv.b;
rgba.b = yuv.r + 2.017 * yuv.g;
rgba.a = 1.0;
frag_color = rgba;
}