From eb67a45ca82bc01ac843c853fd3c17f2a90e0250 Mon Sep 17 00:00:00 2001 From: ameerj Date: Mon, 26 Oct 2020 23:07:36 -0400 Subject: video_core: NVDEC Implementation This commit aims to implement the NVDEC (Nvidia Decoder) functionality, with video frame decoding being handled by the FFmpeg library. The process begins with Ioctl commands being sent to the NVDEC and VIC (Video Image Composer) emulated devices. These allocate the necessary GPU buffers for the frame data, along with providing information on the incoming video data. A Submit command then signals the GPU to process and decode the frame data. To decode the frame, the respective codec's header must be manually composed from the information provided by NVDEC, then sent with the raw frame data to the ffmpeg library. Currently, H264 and VP9 are supported, with VP9 having some minor artifacting issues related mainly to the reference frame composition in its uncompressed header. Async GPU is not properly implemented at the moment. Co-Authored-By: David <25727384+ogniK5377@users.noreply.github.com> --- src/video_core/gpu_asynch.cpp | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) (limited to 'src/video_core/gpu_asynch.cpp') diff --git a/src/video_core/gpu_asynch.cpp b/src/video_core/gpu_asynch.cpp index 70a3d5738..a9baaf7ef 100644 --- a/src/video_core/gpu_asynch.cpp +++ b/src/video_core/gpu_asynch.cpp @@ -10,12 +10,13 @@ namespace VideoCommon { -GPUAsynch::GPUAsynch(Core::System& system) : GPU{system, true}, gpu_thread{system} {} +GPUAsynch::GPUAsynch(Core::System& system, bool use_nvdec) + : GPU{system, true, use_nvdec}, gpu_thread{system} {} GPUAsynch::~GPUAsynch() = default; void GPUAsynch::Start() { - gpu_thread.StartThread(*renderer, renderer->Context(), *dma_pusher); + gpu_thread.StartThread(*renderer, renderer->Context(), *dma_pusher, *cdma_pusher); cpu_context = renderer->GetRenderWindow().CreateSharedContext(); cpu_context->MakeCurrent(); } @@ -32,6 +33,27 @@ void GPUAsynch::PushGPUEntries(Tegra::CommandList&& entries) { gpu_thread.SubmitList(std::move(entries)); } +void GPUAsynch::PushCommandBuffer(Tegra::ChCommandHeaderList& entries) { + if (!use_nvdec) { + return; + } + // This condition fires when a video stream ends, clear all intermediary data + if (entries[0].raw == 0xDEADB33F) { + cdma_pusher.reset(); + return; + } + if (!cdma_pusher) { + cdma_pusher = std::make_unique(*this); + } + + // SubmitCommandBuffer would make the nvdec operations async, this is not currently working + // TODO(ameerj): RE proper async nvdec operation + // gpu_thread.SubmitCommandBuffer(std::move(entries)); + + cdma_pusher->Push(std::move(entries)); + cdma_pusher->DispatchCalls(); +} + void GPUAsynch::SwapBuffers(const Tegra::FramebufferConfig* framebuffer) { gpu_thread.SwapBuffers(framebuffer); } -- cgit v1.2.3