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   1 /* IDirectMusicBuffer Implementation
   2  *
   3  * Copyright (C) 2003-2004 Rok Mandeljc
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "dmusic_private.h"
  21 #include "initguid.h"
  22 #include "dmksctrl.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(dmusic);
  25
  26 static inline IDirectMusicBufferImpl *impl_from_IDirectMusicBuffer(IDirectMusicBuffer *iface)
  27 {
  28     return CONTAINING_RECORD(iface, IDirectMusicBufferImpl, IDirectMusicBuffer_iface);
  29 }
  30
  31 /* IDirectMusicBufferImpl IUnknown part: */
  32 static HRESULT WINAPI IDirectMusicBufferImpl_QueryInterface(LPDIRECTMUSICBUFFER iface, REFIID riid, LPVOID *ret_iface)
  33 {
  34     TRACE("(%p)->(%s, %p)\n", iface, debugstr_dmguid(riid), ret_iface);
  35
  36     if (IsEqualIID(riid, &IID_IUnknown) ||
  37         IsEqualIID(riid, &IID_IDirectMusicBuffer))
  38     {
  39         IDirectMusicBuffer_AddRef(iface);
  40         *ret_iface = iface;
  41         return S_OK;
  42     }
  43
  44     *ret_iface = NULL;
  45
  46     WARN("(%p)->(%s, %p): not found\n", iface, debugstr_dmguid(riid), ret_iface);
  47
  48     return E_NOINTERFACE;
  49 }
  50
  51 static ULONG WINAPI IDirectMusicBufferImpl_AddRef(LPDIRECTMUSICBUFFER iface)
  52 {
  53     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
  54     ULONG ref = InterlockedIncrement(&This->ref);
  55
  56     TRACE("(%p)->(): new ref = %u\n", iface, ref);
  57
  58     DMUSIC_LockModule();
  59
  60     return ref;
  61 }
  62
  63 static ULONG WINAPI IDirectMusicBufferImpl_Release(LPDIRECTMUSICBUFFER iface)
  64 {
  65     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
  66     ULONG ref = InterlockedDecrement(&This->ref);
  67
  68     TRACE("(%p)->(): new ref = %u\n", iface, ref);
  69
  70     if (!ref) {
  71         HeapFree(GetProcessHeap(), 0, This->data);
  72         HeapFree(GetProcessHeap(), 0, This);
  73     }
  74
  75     DMUSIC_UnlockModule();
  76
  77     return ref;
  78 }
  79
  80 /* IDirectMusicBufferImpl IDirectMusicBuffer part: */
  81 static HRESULT WINAPI IDirectMusicBufferImpl_Flush(LPDIRECTMUSICBUFFER iface)
  82 {
  83     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
  84
  85     FIXME("(%p): stub\n", This);
  86
  87     return S_OK;
  88 }
  89
  90 static HRESULT WINAPI IDirectMusicBufferImpl_TotalTime(LPDIRECTMUSICBUFFER iface, LPREFERENCE_TIME prtTime)
  91 {
  92     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
  93
  94     FIXME("(%p, %p): stub\n", This, prtTime);
  95
  96     return S_OK;
  97 }
  98
  99 static HRESULT WINAPI IDirectMusicBufferImpl_PackStructured(LPDIRECTMUSICBUFFER iface, REFERENCE_TIME ref_time, DWORD channel_group, DWORD channel_message)
 100 {
 101     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 102     DWORD new_write_pos = This->write_pos + sizeof(DMUS_EVENTHEADER) + sizeof(DWORD);
 103     DMUS_EVENTHEADER header;
 104
 105     TRACE("(%p)->(0x%s, %u, 0x%x)\n", iface, wine_dbgstr_longlong(ref_time), channel_group, channel_message);
 106
 107     if (new_write_pos > This->size)
 108         return DMUS_E_BUFFER_FULL;
 109
 110     /* Channel_message 0xZZYYXX is a midi message where XX = status byte, YY = byte 1 and ZZ = byte 2 */
 111
 112     if (!(channel_message & 0x80))
 113     {
 114         /* Status byte MSB is always set */
 115         return DMUS_E_INVALID_EVENT;
 116     }
 117
 118     header.cbEvent = sizeof(channel_message);
 119     header.dwChannelGroup = channel_group;
 120     header.rtDelta = ref_time;
 121     header.dwFlags = DMUS_EVENT_STRUCTURED;
 122
 123     memcpy(This->data + This->write_pos, &header, sizeof(header));
 124     *(DWORD*)(This->data + This->write_pos + sizeof(header)) = channel_message;
 125     This->write_pos = new_write_pos;
 126
 127     return S_OK;
 128 }
 129
 130 static HRESULT WINAPI IDirectMusicBufferImpl_PackUnstructured(LPDIRECTMUSICBUFFER iface, REFERENCE_TIME rt, DWORD dwChannelGroup, DWORD cb, LPBYTE lpb)
 131 {
 132     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 133
 134     FIXME("(%p, 0x%s, %d, %d, %p): stub\n", This, wine_dbgstr_longlong(rt), dwChannelGroup, cb, lpb);
 135
 136     return S_OK;
 137 }
 138
 139 static HRESULT WINAPI IDirectMusicBufferImpl_ResetReadPtr(LPDIRECTMUSICBUFFER iface)
 140 {
 141     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 142
 143     FIXME("(%p): stub\n", This);
 144
 145     return S_OK;
 146 }
 147
 148 static HRESULT WINAPI IDirectMusicBufferImpl_GetNextEvent(LPDIRECTMUSICBUFFER iface, LPREFERENCE_TIME prt, LPDWORD pdwChannelGroup, LPDWORD pdwLength, LPBYTE* ppData)
 149 {
 150     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 151
 152     FIXME("(%p, %p, %p, %p, %p): stub\n", This, prt, pdwChannelGroup, pdwLength, ppData);
 153
 154     return S_OK;
 155 }
 156
 157 static HRESULT WINAPI IDirectMusicBufferImpl_GetRawBufferPtr(LPDIRECTMUSICBUFFER iface, LPBYTE* data)
 158 {
 159     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 160
 161     TRACE("(%p)->(%p)\n", iface, data);
 162
 163     if (!data)
 164         return E_POINTER;
 165
 166     *data = This->data;
 167
 168     return S_OK;
 169 }
 170
 171 static HRESULT WINAPI IDirectMusicBufferImpl_GetStartTime(LPDIRECTMUSICBUFFER iface, LPREFERENCE_TIME prt)
 172 {
 173     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 174
 175     FIXME("(%p, %p): stub\n", This, prt);
 176
 177     return S_OK;
 178 }
 179
 180 static HRESULT WINAPI IDirectMusicBufferImpl_GetUsedBytes(LPDIRECTMUSICBUFFER iface, LPDWORD pcb)
 181 {
 182     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 183
 184     FIXME("(%p, %p): stub\n", This, pcb);
 185
 186     return S_OK;
 187 }
 188
 189 static HRESULT WINAPI IDirectMusicBufferImpl_GetMaxBytes(LPDIRECTMUSICBUFFER iface, LPDWORD max_bytes)
 190 {
 191     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 192
 193     TRACE("(%p)->(%p)\n", iface, max_bytes);
 194
 195     if (!max_bytes)
 196         return E_POINTER;
 197
 198     *max_bytes = This->size;
 199
 200     return S_OK;
 201 }
 202
 203 static HRESULT WINAPI IDirectMusicBufferImpl_GetBufferFormat(LPDIRECTMUSICBUFFER iface, LPGUID format)
 204 {
 205     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 206
 207     TRACE("(%p)->(%p)\n", iface, format);
 208
 209     if (!format)
 210         return E_POINTER;
 211
 212     *format = This->format;
 213     return S_OK;
 214 }
 215
 216 static HRESULT WINAPI IDirectMusicBufferImpl_SetStartTime(LPDIRECTMUSICBUFFER iface, REFERENCE_TIME rt)
 217 {
 218     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 219
 220     FIXME("(%p, 0x%s): stub\n", This, wine_dbgstr_longlong(rt));
 221
 222     return S_OK;
 223 }
 224
 225 static HRESULT WINAPI IDirectMusicBufferImpl_SetUsedBytes (LPDIRECTMUSICBUFFER iface, DWORD cb)
 226 {
 227     IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 228
 229     FIXME("(%p, %d): stub\n", This, cb);
 230
 231     return S_OK;
 232 }
 233
 234 static const IDirectMusicBufferVtbl DirectMusicBuffer_Vtbl = {
 235         IDirectMusicBufferImpl_QueryInterface,
 236         IDirectMusicBufferImpl_AddRef,
 237         IDirectMusicBufferImpl_Release,
 238         IDirectMusicBufferImpl_Flush,
 239         IDirectMusicBufferImpl_TotalTime,
 240         IDirectMusicBufferImpl_PackStructured,
 241         IDirectMusicBufferImpl_PackUnstructured,
 242         IDirectMusicBufferImpl_ResetReadPtr,
 243         IDirectMusicBufferImpl_GetNextEvent,
 244         IDirectMusicBufferImpl_GetRawBufferPtr,
 245         IDirectMusicBufferImpl_GetStartTime,
 246         IDirectMusicBufferImpl_GetUsedBytes,
 247         IDirectMusicBufferImpl_GetMaxBytes,
 248         IDirectMusicBufferImpl_GetBufferFormat,
 249         IDirectMusicBufferImpl_SetStartTime,
 250         IDirectMusicBufferImpl_SetUsedBytes
 251 };
 252
 253 HRESULT DMUSIC_CreateDirectMusicBufferImpl(LPDMUS_BUFFERDESC desc, LPVOID* ret_iface)
 254 {
 255     IDirectMusicBufferImpl* dmbuffer;
 256     HRESULT hr;
 257
 258     TRACE("(%p, %p)\n", desc, ret_iface);
 259
 260     *ret_iface = NULL;
 261
 262     dmbuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicBufferImpl));
 263     if (!dmbuffer)
 264         return E_OUTOFMEMORY;
 265
 266     dmbuffer->IDirectMusicBuffer_iface.lpVtbl = &DirectMusicBuffer_Vtbl;
 267     dmbuffer->ref = 0; /* Will be inited by QueryInterface */
 268
 269     if (IsEqualGUID(&desc->guidBufferFormat, &GUID_NULL))
 270         dmbuffer->format = KSDATAFORMAT_SUBTYPE_MIDI;
 271     else
 272         dmbuffer->format = desc->guidBufferFormat;
 273     dmbuffer->size = (desc->cbBuffer + 3) & ~3; /* Buffer size must be multiple of 4 bytes */
 274
 275     dmbuffer->data = HeapAlloc(GetProcessHeap(), 0, dmbuffer->size);
 276     if (!dmbuffer->data) {
 277         HeapFree(GetProcessHeap(), 0, dmbuffer);
 278         return E_OUTOFMEMORY;
 279     }
 280
 281     hr = IDirectMusicBufferImpl_QueryInterface((LPDIRECTMUSICBUFFER)dmbuffer, &IID_IDirectMusicBuffer, ret_iface);
 282     if (FAILED(hr))
 283     {
 284         HeapFree(GetProcessHeap(), 0, dmbuffer->data);
 285         HeapFree(GetProcessHeap(), 0, dmbuffer);
 286     }
 287
 288     return hr;
 289 }