1 /*---------------------------------------------------------------------------*
2 Project: NintendoWare
3 File: snd_StreamSoundFileLoader.cpp
4
5 Copyright (C)2009-2011 Nintendo/HAL Laboratory, Inc. All rights reserved.
6
7 These coded instructions, statements, and computer programs contain proprietary
8 information of Nintendo and/or its licensed developers and are protected by
9 national and international copyright laws. They may not be disclosed to third
10 parties or copied or duplicated in any form, in whole or in part, without the
11 prior written consent of Nintendo.
12
13 The content herein is highly confidential and should be handled accordingly.
14
15 $Revision: 31311 $
16 *---------------------------------------------------------------------------*/
17
18 #include "precompiled.h"
19
20 #include <nw/snd/snd_StreamSoundFileLoader.h>
21
22 namespace nw {
23 namespace snd {
24 namespace internal {
25
26 /* ========================================================================
27 StreamSoundFileLoader
28 ======================================================================== */
29
30 /*---------------------------------------------------------------------------*
31 Name: LoadFileHeader
32
33 Description: ストリームデータのファイルヘッダとHEADブロックをロードし、
34 StreamSoundFileReaderに渡す
35
36 Arguments: buffer - ロードに使用するバッファ
37 size - バッファサイズ
38
39 Returns: AdpcmInfo構造体
40 *---------------------------------------------------------------------------*/
LoadFileHeader(void * buffer,unsigned long size)41 bool StreamSoundFileLoader::LoadFileHeader( void* buffer, unsigned long size )
42 {
43 const size_t headerSize = NW_SND_ROUND_UP_32B( sizeof( StreamSoundFile::FileHeader ) );
44 u8 buffer2[ headerSize+32 ];
45 // RVL_SDK の DVDRead( DVDFileInfo*, void* addr, s32 len, s32 ofs ); の制限は、
46 // 「addr = 32 バイト境界, len = 32 バイトの倍数, ofs = 4 バイトの倍数」
47
48 // ファイルヘッダロード
49 m_Stream.Seek( 0, io::FILE_STREAM_SEEK_BEGIN );
50 s32 readSize = m_Stream.Read( ut::RoundUp( buffer2, 32 ), headerSize );
51 if ( readSize != headerSize )
52 {
53 return false;
54 }
55
56 StreamSoundFile::FileHeader* header =
57 reinterpret_cast<StreamSoundFile::FileHeader*>( ut::RoundUp( buffer2, 32 ) );
58
59 StreamSoundFileReader reader;
60 if ( ! reader.IsValidFileHeader( header ) )
61 {
62 return false;
63 }
64
65 // バッファサイズがファイルヘッダーと INFO ブロックをロードできるサイズかチェック
66 // (必ず、ヘッダーと INFO ブロックが並んで格納されているものとする)
67 u32 loadSize = header->GetInfoBlockOffset() + header->GetInfoBlockSize();
68 if ( loadSize > size )
69 {
70 return false;
71 }
72
73 // ファイルヘッダーと INFO ブロックをロード
74 m_Stream.Seek( 0, io::FILE_STREAM_SEEK_BEGIN );
75 readSize = m_Stream.Read( buffer, loadSize );
76 if ( readSize != loadSize )
77 {
78 return false;
79 }
80
81 m_Reader.Initialize( buffer );
82
83 return true;
84 }
85
86 /*---------------------------------------------------------------------------*
87 Name: GetTrackCount
88
89 Description: トラック数取得
90
91 Arguments: なし
92
93 Returns: トラック数
94 *---------------------------------------------------------------------------*/
GetTrackCount() const95 u32 StreamSoundFileLoader::GetTrackCount() const
96 {
97 if ( ! m_Reader.IsAvailable() ) return 0;
98 return m_Reader.GetTrackCount();
99 }
100
101 /*---------------------------------------------------------------------------*
102 Name: GetChannelCount
103
104 Description: チャンネル数取得
105
106 Arguments: なし
107
108 Returns: チャンネル数
109 *---------------------------------------------------------------------------*/
GetChannelCount() const110 u32 StreamSoundFileLoader::GetChannelCount() const
111 {
112 if ( ! m_Reader.IsAvailable() ) return 0;
113 return m_Reader.GetChannelCount();
114 }
115
116 /*---------------------------------------------------------------------------*
117 Name: ReadStrmInfo
118
119 Description:
120
121 Arguments: strmInfo -
122
123 Returns:
124 *---------------------------------------------------------------------------*/
ReadStreamInfo(StreamSoundFile::StreamSoundInfo * strmInfo) const125 bool StreamSoundFileLoader::ReadStreamInfo( StreamSoundFile::StreamSoundInfo* strmInfo ) const
126 {
127 if ( ! m_Reader.IsAvailable() ) return false;
128 m_Reader.ReadStreamSoundInfo( strmInfo );
129 return true;
130 }
131
132 /*---------------------------------------------------------------------------*
133 Name: ReadStrmTrackInfo
134
135 Description:
136
137 Arguments: trackInfo -
138 trackIndex -
139
140 Returns:
141 *---------------------------------------------------------------------------*/
ReadStreamTrackInfo(StreamSoundFileReader::TrackInfo * trackInfo,int trackIndex) const142 bool StreamSoundFileLoader::ReadStreamTrackInfo( StreamSoundFileReader::TrackInfo* trackInfo, int trackIndex ) const
143 {
144 if ( ! m_Reader.IsAvailable() ) return false;
145 m_Reader.ReadStreamTrackInfo( trackInfo, trackIndex );
146 return true;
147 }
148
149 /*---------------------------------------------------------------------------*
150 Name: ReadDspAdpcmChannelInfo
151
152 Description:
153
154 Arguments: adpcmInfo -
155 channelIndex -
156
157 Returns:
158 *---------------------------------------------------------------------------*/
ReadDspAdpcmChannelInfo(DspAdpcmParam * adpcmParam,DspAdpcmLoopParam * adpcmLoopParam,int channelIndex) const159 bool StreamSoundFileLoader::ReadDspAdpcmChannelInfo(
160 DspAdpcmParam* adpcmParam,
161 DspAdpcmLoopParam* adpcmLoopParam,
162 int channelIndex
163 ) const
164 {
165 if ( ! m_Reader.IsAvailable() ) return false;
166 m_Reader.ReadDspAdpcmChannelInfo( adpcmParam, adpcmLoopParam, channelIndex );
167 return true;
168 }
169
170 /*---------------------------------------------------------------------------*
171 Name: ReadAdpcBlockData
172
173 Description: ADPCブロックの指定されたデータを読み取る
174
175 Arguments: yn1, yn2 - 読み取ったデータを格納する配列
176 blockIndex - 読み取るデータのブロック番号
177 channelCount - チャンネル数(yn1,yn2の配列サイズ)
178
179 Returns: 読み取れたら true, 読み取れなかったら false
180 *---------------------------------------------------------------------------*/
ReadAdpcBlockData(u16 * yn1,u16 * yn2,int blockIndex,int channelCount)181 bool StreamSoundFileLoader::ReadAdpcBlockData( u16* yn1, u16* yn2, int blockIndex, int channelCount )
182 {
183 if ( ! m_Reader.IsAvailable() ) return false;
184
185 s32 readOffset = static_cast<s32>(
186 m_Reader.GetSeekBlockOffset() +
187 sizeof(ut::BinaryBlockHeader) +
188 sizeof(s16) * 2 * channelCount * blockIndex
189 );
190 m_Stream.Seek( readOffset, io::FILE_STREAM_SEEK_BEGIN );
191
192 // TODO: 以下は８チャンネル以上で動作できないコードなのでASSERT
193 u32 readDataSize = sizeof(s16) * 2 * channelCount;
194 NW_ASSERT( readDataSize <= 32 );
195
196 // DVDは32Byte単位でしかReadできないので32Byte読んでしまう
197 NN_ATTRIBUTE_ALIGN(32) static u16 buffer[16];
198 int readSize = m_Stream.Read( buffer, sizeof( buffer ) );
199 if ( readSize != sizeof(buffer) ) return false;
200
201 for ( int i=0; i< channelCount; i++ )
202 {
203 yn1[i] = buffer[i*2];
204 yn2[i] = buffer[i*2+1];
205 }
206
207 return true;
208 }
209
210 } // namespace nw::snd::internal
211 } // namespace nw::snd
212 } // namespace nw
213
214