40 lines
1.2 KiB
C#
40 lines
1.2 KiB
C#
using Ryujinx.Graphics.Video;
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using System;
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namespace Ryujinx.Graphics.Nvdec.H264
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{
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public sealed class Decoder : IH264Decoder
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{
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public bool IsHardwareAccelerated => false;
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private const int WorkBufferSize = 0x200;
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private readonly byte[] _workBuffer = new byte[WorkBufferSize];
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private readonly FFmpegContext _context = new FFmpegContext();
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public ISurface CreateSurface(int width, int height)
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{
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return new Surface();
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}
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public bool Decode(ref H264PictureInfo pictureInfo, ISurface output, ReadOnlySpan<byte> bitstream)
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{
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Span<byte> bs = Prepend(bitstream, SpsAndPpsReconstruction.Reconstruct(ref pictureInfo, _workBuffer));
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return _context.DecodeFrame((Surface)output, bs) == 0;
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}
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private static byte[] Prepend(ReadOnlySpan<byte> data, ReadOnlySpan<byte> prep)
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{
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byte[] output = new byte[data.Length + prep.Length];
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prep.CopyTo(output);
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data.CopyTo(new Span<byte>(output).Slice(prep.Length));
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return output;
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}
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public void Dispose() => _context.Dispose();
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}
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}
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