1 files changed, 48 insertions, 0 deletions

diff --git a/src/video_core/host1x/nvdec.cpp b/src/video_core/host1x/nvdec.cpp
new file mode 100644
index 000000000..a4bd5b79f
--- /dev/null
+++ b/src/video_core/host1x/nvdec.cpp
@@ -0,0 +1,48 @@
+// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/assert.h"
+#include "video_core/host1x/host1x.h"
+#include "video_core/host1x/nvdec.h"
+
+namespace Tegra::Host1x {
+
+#define NVDEC_REG_INDEX(field_name)                                                                \
+    (offsetof(NvdecCommon::NvdecRegisters, field_name) / sizeof(u64))
+
+Nvdec::Nvdec(Host1x& host1x_)
+    : host1x(host1x_), state{}, codec(std::make_unique<Codec>(host1x, state)) {}
+
+Nvdec::~Nvdec() = default;
+
+void Nvdec::ProcessMethod(u32 method, u32 argument) {
+    state.reg_array[method] = static_cast<u64>(argument) << 8;
+
+    switch (method) {
+    case NVDEC_REG_INDEX(set_codec_id):
+        codec->SetTargetCodec(static_cast<NvdecCommon::VideoCodec>(argument));
+        break;
+    case NVDEC_REG_INDEX(execute):
+        Execute();
+        break;
+    }
+}
+
+AVFramePtr Nvdec::GetFrame() {
+    return codec->GetCurrentFrame();
+}
+
+void Nvdec::Execute() {
+    switch (codec->GetCurrentCodec()) {
+    case NvdecCommon::VideoCodec::H264:
+    case NvdecCommon::VideoCodec::VP8:
+    case NvdecCommon::VideoCodec::VP9:
+        codec->Decode();
+        break;
+    default:
+        UNIMPLEMENTED_MSG("Codec {}", codec->GetCurrentCodecName());
+        break;
+    }
+}
+
+} // namespace Tegra::Host1x