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lizzie
90515bc6a2
- fix va-api not being used on freebsd small thingies dont affect a lot: - removes some pointer indirection (why save pointer to GMMU if its accesible via host1x) - use std::variant<> for decoder - miscelly vp9/v8/h264 opts Signed-off-by: lizzie <lizzie@eden-emu.dev> Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3878 Reviewed-by: crueter <crueter@eden-emu.dev> Reviewed-by: MaranBr <maranbr@eden-emu.dev>
74 lines
3.2 KiB
C++
74 lines
3.2 KiB
C++
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <vector>
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#include "video_core/host1x/codecs/vp8.h"
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#include "video_core/host1x/host1x.h"
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#include "video_core/memory_manager.h"
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namespace Tegra::Decoders {
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VP8::VP8(Host1x::Host1x& host1x_, const Host1x::NvdecCommon::NvdecRegisters& regs_, s32 id_)
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: Decoder{host1x_, id_, regs_}
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{
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initialized = decode_api.Initialize(Host1x::NvdecCommon::VideoCodec::VP8);
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}
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VP8::~VP8() = default;
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std::tuple<u64, u64> VP8::GetProgressiveOffsets() {
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auto luma{regs.surface_luma_offsets[static_cast<u32>(Vp8SurfaceIndex::Current)].Address()};
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auto chroma{regs.surface_chroma_offsets[static_cast<u32>(Vp8SurfaceIndex::Current)].Address()};
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return {luma, chroma};
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}
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std::tuple<u64, u64, u64, u64> VP8::GetInterlacedOffsets() {
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auto luma_top{regs.surface_luma_offsets[static_cast<u32>(Vp8SurfaceIndex::Current)].Address()};
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auto luma_bottom = regs.surface_luma_offsets[u32(Vp8SurfaceIndex::Current)].Address();
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auto chroma_top = regs.surface_chroma_offsets[u32(Vp8SurfaceIndex::Current)].Address();
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auto chroma_bottom = regs.surface_chroma_offsets[u32(Vp8SurfaceIndex::Current)].Address();
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return {luma_top, luma_bottom, chroma_top, chroma_bottom};
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}
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std::span<const u8> VP8::ComposeFrame() {
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host1x.gmmu_manager.ReadBlock(regs.picture_info_offset.Address(), ¤t_context, sizeof(VP8PictureInfo));
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const bool is_key_frame = current_context.key_frame == 1u;
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const auto bitstream_size = size_t(current_context.vld_buffer_size);
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const size_t header_size = is_key_frame ? 10u : 3u;
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frame_scratch.resize(header_size + bitstream_size);
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// Based on page 30 of the VP8 specification.
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// https://datatracker.ietf.org/doc/rfc6386/
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frame_scratch[0] = is_key_frame ? 0u : 1u; // 1-bit frame type (0: keyframe, 1: interframes).
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frame_scratch[0] |= u8((current_context.version & 7u) << 1u); // 3-bit version number
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frame_scratch[0] |= u8(1u << 4u); // 1-bit show_frame flag
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// The next 19-bits are the first partition size
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frame_scratch[0] |= u8((current_context.first_part_size & 7u) << 5u);
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frame_scratch[1] = u8((current_context.first_part_size & 0x7f8u) >> 3u);
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frame_scratch[2] = u8((current_context.first_part_size & 0x7f800u) >> 11u);
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if (is_key_frame) {
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frame_scratch[3] = 0x9du;
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frame_scratch[4] = 0x01u;
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frame_scratch[5] = 0x2au;
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// TODO(ameerj): Horizontal/Vertical Scale
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// 16 bits: (2 bits Horizontal Scale << 14) | Width (14 bits)
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frame_scratch[6] = u8(current_context.frame_width & 0xff);
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frame_scratch[7] = u8(((current_context.frame_width >> 8) & 0x3f));
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// 16 bits:(2 bits Vertical Scale << 14) | Height (14 bits)
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frame_scratch[8] = u8(current_context.frame_height & 0xff);
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frame_scratch[9] = u8(((current_context.frame_height >> 8) & 0x3f));
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}
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const u64 bitstream_offset = regs.frame_bitstream_offset.Address();
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host1x.gmmu_manager.ReadBlock(bitstream_offset, frame_scratch.data() + header_size, bitstream_size);
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return frame_scratch;
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}
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} // namespace Tegra::Decoders
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