From 6d3828a166f927efb011616a288f80aebca703b6 Mon Sep 17 00:00:00 2001 From: morkt Date: Sat, 3 Dec 2016 07:24:47 +0400 Subject: [PATCH] (Pb3Reader): moved common methods to separate class. --- ArcFormats/Cmvs/ImagePB3.cs | 216 +++++++++++++++++++----------------- 1 file changed, 115 insertions(+), 101 deletions(-) diff --git a/ArcFormats/Cmvs/ImagePB3.cs b/ArcFormats/Cmvs/ImagePB3.cs index 28f0d0fe..4ce46188 100644 --- a/ArcFormats/Cmvs/ImagePB3.cs +++ b/ArcFormats/Cmvs/ImagePB3.cs @@ -33,13 +33,17 @@ using System.Collections.Generic; namespace GameRes.Formats.Purple { - internal class Pb3MetaData : ImageMetaData + internal class PbMetaData : ImageMetaData { public int Type; - public int SubType; public int InputSize; } + internal class Pb3MetaData : PbMetaData + { + public int SubType; + } + [Export(typeof(ImageFormat))] public class Pb3Format : ImageFormat { @@ -81,23 +85,119 @@ namespace GameRes.Formats.Purple } } - internal sealed class Pb3Reader + internal class PbReaderBase { - byte[] m_input; - Pb3MetaData m_info; - int m_channels; - int m_stride; - byte[] m_output; - byte[] m_lzss_frame; + protected PbMetaData m_info; + protected byte[] m_input; + protected byte[] m_output; + protected byte[] m_lzss_frame = new byte[0x800]; + protected int m_stride; - public PixelFormat Format { get; private set; } + protected PbReaderBase (PbMetaData info) + { + m_info = info; + } + + public PixelFormat Format { get; protected set; } public byte[] Data { get { return m_output; } } - public Pb3Reader (Stream input, Pb3MetaData info) + internal void LzssResetFrame () + { + for (int i = 0; i < 0x7DE; ++i) + m_lzss_frame[i] = 0; + } + + internal void LzssUnpack (int bit_src, int data_src, byte[] output, int output_size) + { + int dst = 0; + int bit_mask = 0x80; + int frame_offset = 0x7DE; + while (dst < output_size) + { + if (0 == bit_mask) + { + bit_mask = 0x80; + ++bit_src; + } + if (0 != (bit_mask & m_input[bit_src])) + { + int v = LittleEndian.ToUInt16 (m_input, data_src); + data_src += 2; + int count = (v & 0x1F) + 3; + int offset = v >> 5; + for (int i = 0; i < count; ++i) + { + byte b = m_lzss_frame[(i + offset) & 0x7FF]; + output[dst++] = b; + m_lzss_frame[frame_offset++] = b; + frame_offset &= 0x7FF; + } + } + else + { + byte b = m_input[data_src++]; + output[dst++] = b; + m_lzss_frame[frame_offset++] = b; + frame_offset &= 0x7FF; + } + bit_mask >>= 1; + } + } + + internal void UnpackJbp (int jbp_pos, int alpha_pos) + { + var jbp = new JbpReader (m_input, jbp_pos); + m_output = jbp.Unpack(); + if (m_stride != jbp.Stride) + { + int src_stride = jbp.Stride; + int src = src_stride; + int dst = m_stride; + for (uint y = 1; y < m_info.Height; ++y) + { + Buffer.BlockCopy (m_output, src, m_output, dst, m_stride); + src += src_stride; + dst += m_stride; + } + } + if (32 == m_info.BPP && alpha_pos > 0) + { + int dst = 3; + int output_end = m_stride * (int)m_info.Height; + while (dst < output_end) + { + byte alpha = m_input[alpha_pos++]; + if (0 != alpha && 0xFF != alpha) + { + m_output[dst] = alpha; + dst += 4; + } + else + { + int count = m_input[alpha_pos++]; + while (count --> 0) + { + m_output[dst] = alpha; + dst += 4; + } + } + } + } + else + { + Format = PixelFormats.Bgr32; + } + } + } + + internal sealed class Pb3Reader : PbReaderBase + { + int m_channels; + + public Pb3Reader (Stream input, Pb3MetaData info) : base (info) { if (info.Type == 1 && info.SubType != 0x10) throw new NotSupportedException(); - m_info = info; if (3 == m_info.Type || 2 == m_info.Type) m_input = new byte[input.Length]; else @@ -106,7 +206,6 @@ namespace GameRes.Formats.Purple throw new EndOfStreamException(); m_channels = m_info.BPP / 8; m_stride = 4 * (int)m_info.Width; - m_lzss_frame = new byte[0x800]; Format = m_channels < 4 ? PixelFormats.Bgr32 : PixelFormats.Bgra32; // output array created by unpack methods as needed. } @@ -121,7 +220,7 @@ namespace GameRes.Formats.Purple case 8: case 6: UnpackV6(); break; case 2: - case 3: UnpackV3(); break; + case 3: UnpackJbp (0x34, m_input.ToInt32 (0x2C)); break; case 4: case 7: throw new NotSupportedException(string.Format ("PB3 v{0} images not supported", m_info.Type)); } @@ -160,8 +259,7 @@ namespace GameRes.Formats.Purple channel_offset += LittleEndian.ToInt32 (m_input, data2 + 4*i); int data_src = data2 + channel_offset; - for (int i = 0; i < 0x7DE; ++i) - m_lzss_frame[i] = 0; + LzssResetFrame(); LzssUnpack (bit_src, data_src, plane, channel_size); if (0 == y_blocks || 0 == x_blocks) @@ -222,52 +320,6 @@ namespace GameRes.Formats.Purple } } - void UnpackV3 () - { - var jbp = new JbpReader (m_input, 0x34); - m_output = jbp.Unpack(); - if (m_stride != jbp.Stride) - { - int src_stride = jbp.Stride; - int src = src_stride; - int dst = m_stride; - for (uint y = 1; y < m_info.Height; ++y) - { - Buffer.BlockCopy (m_output, src, m_output, dst, m_stride); - src += src_stride; - dst += m_stride; - } - } - int alpha_pos = LittleEndian.ToInt32 (m_input, 0x2C); - if (32 == m_info.BPP && alpha_pos > 0) - { - int dst = 3; - int output_end = m_stride * (int)m_info.Height; - while (dst < output_end) - { - byte alpha = m_input[alpha_pos++]; - if (0 != alpha && 0xFF != alpha) - { - m_output[dst] = alpha; - dst += 4; - } - else - { - int count = m_input[alpha_pos++]; - while (count --> 0) - { - m_output[dst] = alpha; - dst += 4; - } - } - } - } - else - { - Format = PixelFormats.Bgr32; - } - } - void UnpackV5 () { m_output = new byte[m_stride * (int)m_info.Height]; @@ -275,8 +327,7 @@ namespace GameRes.Formats.Purple { int bit_src = 0x54 + LittleEndian.ToInt32 (m_input, 8 * i + 0x34); int data_src = 0x54 + LittleEndian.ToInt32 (m_input, 8 * i + 0x38); - for (int j = 0; j < 0x7DE; ++j) - m_lzss_frame[j] = 0; + LzssResetFrame(); int frame_offset = 0x7DE; byte accum = 0; int bit_mask = 128; @@ -357,43 +408,6 @@ namespace GameRes.Formats.Purple } } - void LzssUnpack (int bit_src, int data_src, byte[] output, int output_size) - { - int dst = 0; - int bit_mask = 0x80; - int frame_offset = 0x7DE; - while (dst < output_size) - { - if (0 == bit_mask) - { - bit_mask = 0x80; - ++bit_src; - } - if (0 != (bit_mask & m_input[bit_src])) - { - int v = LittleEndian.ToUInt16 (m_input, data_src); - data_src += 2; - int count = (v & 0x1F) + 3; - int offset = v >> 5; - for (int i = 0; i < count; ++i) - { - byte b = m_lzss_frame[(i + offset) & 0x7FF]; - output[dst++] = b; - m_lzss_frame[frame_offset++] = b; - frame_offset &= 0x7FF; - } - } - else - { - byte b = m_input[data_src++]; - output[dst++] = b; - m_lzss_frame[frame_offset++] = b; - frame_offset &= 0x7FF; - } - bit_mask >>= 1; - } - } - void BlendInput () { int bit_src = 0x20 + LittleEndian.ToInt32 (m_input, 0xC);