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authorceros7 <ceros7@svn>2010-01-22 07:22:36 +0000
committerceros7 <ceros7@svn>2010-01-22 07:22:36 +0000
commit88b2c26dec662fa71d9f4a4ec7a1c47114b82325 (patch)
treeeda35d2769597506f8dcfab9075f9b9e0c89803a /lib/libmodplug/src/load_mtm.cpp
parent5d73e3ee8ca59f26829326861821fa09bc00c1b8 (diff)
Merge remote branch 'origin/gpl-compat'
git-svn-id: https://xbmc.svn.sourceforge.net/svnroot/xbmc/trunk@27060 568bbfeb-2a22-0410-94d2-cc84cf5bfa90
Diffstat (limited to 'lib/libmodplug/src/load_mtm.cpp')
-rw-r--r--lib/libmodplug/src/load_mtm.cpp168
1 files changed, 168 insertions, 0 deletions
diff --git a/lib/libmodplug/src/load_mtm.cpp b/lib/libmodplug/src/load_mtm.cpp
new file mode 100644
index 0000000000..f5f0299e23
--- /dev/null
+++ b/lib/libmodplug/src/load_mtm.cpp
@@ -0,0 +1,168 @@
+/*
+ * This source code is public domain.
+ *
+ * Authors: Olivier Lapicque <olivierl@jps.net>
+*/
+
+#include "stdafx.h"
+#include "sndfile.h"
+
+//#pragma warning(disable:4244)
+
+//////////////////////////////////////////////////////////
+// MTM file support (import only)
+
+#pragma pack(1)
+
+
+typedef struct tagMTMSAMPLE
+{
+ char samplename[22]; // changed from CHAR
+ DWORD length;
+ DWORD reppos;
+ DWORD repend;
+ CHAR finetune;
+ BYTE volume;
+ BYTE attribute;
+} MTMSAMPLE;
+
+
+typedef struct tagMTMHEADER
+{
+ char id[4]; // MTM file marker + version // changed from CHAR
+ char songname[20]; // ASCIIZ songname // changed from CHAR
+ WORD numtracks; // number of tracks saved
+ BYTE lastpattern; // last pattern number saved
+ BYTE lastorder; // last order number to play (songlength-1)
+ WORD commentsize; // length of comment field
+ BYTE numsamples; // number of samples saved
+ BYTE attribute; // attribute byte (unused)
+ BYTE beatspertrack;
+ BYTE numchannels; // number of channels used
+ BYTE panpos[32]; // voice pan positions
+} MTMHEADER;
+
+
+#pragma pack()
+
+
+BOOL CSoundFile::ReadMTM(LPCBYTE lpStream, DWORD dwMemLength)
+//-----------------------------------------------------------
+{
+ MTMHEADER *pmh = (MTMHEADER *)lpStream;
+ DWORD dwMemPos = 66;
+
+ if ((!lpStream) || (dwMemLength < 0x100)) return FALSE;
+ if ((strncmp(pmh->id, "MTM", 3)) || (pmh->numchannels > 32)
+ || (pmh->numsamples >= MAX_SAMPLES) || (!pmh->numsamples)
+ || (!pmh->numtracks) || (!pmh->numchannels)
+ || (!pmh->lastpattern) || (pmh->lastpattern > MAX_PATTERNS))
+ return FALSE;
+ strncpy(m_szNames[0], pmh->songname, 20);
+ m_szNames[0][20] = 0;
+ if (dwMemPos + 37*pmh->numsamples + 128 + 192*pmh->numtracks
+ + 64 * (pmh->lastpattern+1) + pmh->commentsize >= dwMemLength)
+ return FALSE;
+ m_nType = MOD_TYPE_MTM;
+ m_nSamples = pmh->numsamples;
+ m_nChannels = pmh->numchannels;
+ // Reading instruments
+ for (UINT i=1; i<=m_nSamples; i++)
+ {
+ MTMSAMPLE *pms = (MTMSAMPLE *)(lpStream + dwMemPos);
+ strncpy(m_szNames[i], pms->samplename, 22);
+ m_szNames[i][22] = 0;
+ Ins[i].nVolume = pms->volume << 2;
+ Ins[i].nGlobalVol = 64;
+ DWORD len = pms->length;
+ if ((len > 4) && (len <= MAX_SAMPLE_LENGTH))
+ {
+ Ins[i].nLength = len;
+ Ins[i].nLoopStart = pms->reppos;
+ Ins[i].nLoopEnd = pms->repend;
+ if (Ins[i].nLoopEnd > Ins[i].nLength)
+ Ins[i].nLoopEnd = Ins[i].nLength;
+ if (Ins[i].nLoopStart + 4 >= Ins[i].nLoopEnd)
+ Ins[i].nLoopStart = Ins[i].nLoopEnd = 0;
+ if (Ins[i].nLoopEnd) Ins[i].uFlags |= CHN_LOOP;
+ Ins[i].nFineTune = MOD2XMFineTune(pms->finetune);
+ if (pms->attribute & 0x01)
+ {
+ Ins[i].uFlags |= CHN_16BIT;
+ Ins[i].nLength >>= 1;
+ Ins[i].nLoopStart >>= 1;
+ Ins[i].nLoopEnd >>= 1;
+ }
+ Ins[i].nPan = 128;
+ }
+ dwMemPos += 37;
+ }
+ // Setting Channel Pan Position
+ for (UINT ich=0; ich<m_nChannels; ich++)
+ {
+ ChnSettings[ich].nPan = ((pmh->panpos[ich] & 0x0F) << 4) + 8;
+ ChnSettings[ich].nVolume = 64;
+ }
+ // Reading pattern order
+ memcpy(Order, lpStream + dwMemPos, pmh->lastorder+1);
+ dwMemPos += 128;
+ // Reading Patterns
+ LPCBYTE pTracks = lpStream + dwMemPos;
+ dwMemPos += 192 * pmh->numtracks;
+ LPWORD pSeq = (LPWORD)(lpStream + dwMemPos);
+ for (UINT pat=0; pat<=pmh->lastpattern; pat++)
+ {
+ PatternSize[pat] = 64;
+ if ((Patterns[pat] = AllocatePattern(64, m_nChannels)) == NULL) break;
+ for (UINT n=0; n<32; n++) if ((pSeq[n]) && (pSeq[n] <= pmh->numtracks) && (n < m_nChannels))
+ {
+ LPCBYTE p = pTracks + 192 * (pSeq[n]-1);
+ MODCOMMAND *m = Patterns[pat] + n;
+ for (UINT i=0; i<64; i++, m+=m_nChannels, p+=3)
+ {
+ if (p[0] & 0xFC) m->note = (p[0] >> 2) + 37;
+ m->instr = ((p[0] & 0x03) << 4) | (p[1] >> 4);
+ UINT cmd = p[1] & 0x0F;
+ UINT param = p[2];
+ if (cmd == 0x0A)
+ {
+ if (param & 0xF0) param &= 0xF0; else param &= 0x0F;
+ }
+ m->command = cmd;
+ m->param = param;
+ if ((cmd) || (param)) ConvertModCommand(m);
+ }
+ }
+ pSeq += 32;
+ }
+ dwMemPos += 64*(pmh->lastpattern+1);
+ if ((pmh->commentsize) && (dwMemPos + pmh->commentsize < dwMemLength))
+ {
+ UINT n = pmh->commentsize;
+ m_lpszSongComments = new char[n+1];
+ if (m_lpszSongComments)
+ {
+ memcpy(m_lpszSongComments, lpStream+dwMemPos, n);
+ m_lpszSongComments[n] = 0;
+ for (UINT i=0; i<n; i++)
+ {
+ if (!m_lpszSongComments[i])
+ {
+ m_lpszSongComments[i] = ((i+1) % 40) ? 0x20 : 0x0D;
+ }
+ }
+ }
+ }
+ dwMemPos += pmh->commentsize;
+ // Reading Samples
+ for (UINT ismp=1; ismp<=m_nSamples; ismp++)
+ {
+ if (dwMemPos >= dwMemLength) break;
+ dwMemPos += ReadSample(&Ins[ismp], (Ins[ismp].uFlags & CHN_16BIT) ? RS_PCM16U : RS_PCM8U,
+ (LPSTR)(lpStream + dwMemPos), dwMemLength - dwMemPos);
+ }
+ m_nMinPeriod = 64;
+ m_nMaxPeriod = 32767;
+ return TRUE;
+}
+