dlls/amstream/audiodata.c

   1 /*
   2  * Implementation of IAudioData Interface
   3  *
   4  * Copyright 2012 Christian Costa
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "wine/debug.h"
  22
  23 #define COBJMACROS
  24
  25 #include "winbase.h"
  26 #include "amstream_private.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  29
  30 typedef struct {
  31     IAudioData IAudioData_iface;
  32     LONG ref;
  33     DWORD size;
  34     BYTE *data;
  35     BOOL data_owned;
  36     DWORD actual_data;
  37     WAVEFORMATEX wave_format;
  38 } AMAudioDataImpl;
  39
  40 static inline AMAudioDataImpl *impl_from_IAudioData(IAudioData *iface)
  41 {
  42     return CONTAINING_RECORD(iface, AMAudioDataImpl, IAudioData_iface);
  43 }
  44
  45 /*** IUnknown methods ***/
  46 static HRESULT WINAPI IAudioDataImpl_QueryInterface(IAudioData *iface, REFIID riid, void **ret_iface)
  47 {
  48     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ret_iface);
  49
  50     if (IsEqualGUID(riid, &IID_IUnknown) ||
  51         IsEqualGUID(riid, &IID_IAudioData))
  52     {
  53         IAudioData_AddRef(iface);
  54         *ret_iface = iface;
  55         return S_OK;
  56     }
  57
  58     ERR("(%p)->(%s,%p),not found\n", iface, debugstr_guid(riid), ret_iface);
  59     return E_NOINTERFACE;
  60 }
  61
  62 static ULONG WINAPI IAudioDataImpl_AddRef(IAudioData* iface)
  63 {
  64     AMAudioDataImpl *This = impl_from_IAudioData(iface);
  65     ULONG ref = InterlockedIncrement(&This->ref);
  66
  67     TRACE("(%p)->(): new ref = %lu\n", iface, This->ref);
  68
  69     return ref;
  70 }
  71
  72 static ULONG WINAPI IAudioDataImpl_Release(IAudioData* iface)
  73 {
  74     AMAudioDataImpl *audiodata = impl_from_IAudioData(iface);
  75     ULONG ref = InterlockedDecrement(&audiodata->ref);
  76
  77     TRACE("%p decreasing refcount to %lu.\n", audiodata, ref);
  78
  79     if (!ref)
  80     {
  81         if (audiodata->data_owned)
  82             free(audiodata->data);
  83         free(audiodata);
  84     }
  85
  86     return ref;
  87 }
  88
  89 /*** IMemoryData methods ***/
  90 static HRESULT WINAPI IAudioDataImpl_SetBuffer(IAudioData* iface, DWORD size, BYTE *data, DWORD flags)
  91 {
  92     AMAudioDataImpl *This = impl_from_IAudioData(iface);
  93
  94     TRACE("(%p)->(%lu,%p,%lx)\n", iface, size, data, flags);
  95
  96     if (!size)
  97     {
  98         return E_INVALIDARG;
  99     }
 100
 101     if (This->data_owned)
 102     {
 103         free(This->data);
 104         This->data_owned = FALSE;
 105     }
 106
 107     This->size = size;
 108     This->data = data;
 109
 110     if (!This->data)
 111     {
 112         This->data = malloc(This->size);
 113         This->data_owned = TRUE;
 114         if (!This->data)
 115         {
 116             return E_OUTOFMEMORY;
 117         }
 118     }
 119
 120     return S_OK;
 121 }
 122
 123 static HRESULT WINAPI IAudioDataImpl_GetInfo(IAudioData* iface, DWORD *length, BYTE **data, DWORD *actual_data)
 124 {
 125     AMAudioDataImpl *This = impl_from_IAudioData(iface);
 126
 127     TRACE("(%p)->(%p,%p,%p)\n", iface, length, data, actual_data);
 128
 129     if (!This->data)
 130     {
 131         return MS_E_NOTINIT;
 132     }
 133
 134     if (length)
 135     {
 136         *length = This->size;
 137     }
 138     if (data)
 139     {
 140         *data = This->data;
 141     }
 142     if (actual_data)
 143     {
 144         *actual_data = This->actual_data;
 145     }
 146
 147     return S_OK;
 148 }
 149
 150 static HRESULT WINAPI IAudioDataImpl_SetActual(IAudioData* iface, DWORD data_valid)
 151 {
 152     AMAudioDataImpl *This = impl_from_IAudioData(iface);
 153
 154     TRACE("(%p)->(%lu)\n", iface, data_valid);
 155
 156     if (data_valid > This->size)
 157     {
 158         return E_INVALIDARG;
 159     }
 160
 161     This->actual_data = data_valid;
 162
 163     return S_OK;
 164 }
 165
 166 /*** IAudioData methods ***/
 167 static HRESULT WINAPI IAudioDataImpl_GetFormat(IAudioData* iface, WAVEFORMATEX *wave_format_current)
 168 {
 169     AMAudioDataImpl *This = impl_from_IAudioData(iface);
 170
 171     TRACE("(%p)->(%p)\n", iface, wave_format_current);
 172
 173     if (!wave_format_current)
 174     {
 175         return E_POINTER;
 176     }
 177
 178     *wave_format_current = This->wave_format;
 179
 180     return S_OK;
 181 }
 182
 183 static HRESULT WINAPI IAudioDataImpl_SetFormat(IAudioData* iface, const WAVEFORMATEX *wave_format)
 184 {
 185     AMAudioDataImpl *This = impl_from_IAudioData(iface);
 186
 187     TRACE("(%p)->(%p)\n", iface, wave_format);
 188
 189     if (!wave_format)
 190     {
 191         return E_POINTER;
 192     }
 193
 194     if (WAVE_FORMAT_PCM != wave_format->wFormatTag)
 195     {
 196         return E_INVALIDARG;
 197     }
 198
 199     This->wave_format = *wave_format;
 200
 201     return S_OK;
 202 }
 203
 204 static const struct IAudioDataVtbl AudioData_Vtbl =
 205 {
 206     /*** IUnknown methods ***/
 207     IAudioDataImpl_QueryInterface,
 208     IAudioDataImpl_AddRef,
 209     IAudioDataImpl_Release,
 210     /*** IMemoryData methods ***/
 211     IAudioDataImpl_SetBuffer,
 212     IAudioDataImpl_GetInfo,
 213     IAudioDataImpl_SetActual,
 214     /*** IAudioData methods ***/
 215     IAudioDataImpl_GetFormat,
 216     IAudioDataImpl_SetFormat
 217 };
 218
 219 HRESULT AMAudioData_create(IUnknown *pUnkOuter, LPVOID *ppObj)
 220 {
 221     AMAudioDataImpl *object;
 222
 223     TRACE("(%p,%p)\n", pUnkOuter, ppObj);
 224
 225     if (pUnkOuter)
 226         return CLASS_E_NOAGGREGATION;
 227
 228     if (!(object = calloc(1, sizeof(*object))))
 229         return E_OUTOFMEMORY;
 230
 231     object->IAudioData_iface.lpVtbl = &AudioData_Vtbl;
 232     object->ref = 1;
 233
 234     object->wave_format.wFormatTag = WAVE_FORMAT_PCM;
 235     object->wave_format.nChannels = 1;
 236     object->wave_format.nSamplesPerSec = 11025;
 237     object->wave_format.wBitsPerSample = 16;
 238     object->wave_format.nBlockAlign = object->wave_format.wBitsPerSample * object->wave_format.nChannels / 8;
 239     object->wave_format.nAvgBytesPerSec = object->wave_format.nBlockAlign * object->wave_format.nSamplesPerSec;
 240
 241     *ppObj = &object->IAudioData_iface;
 242
 243     return S_OK;
 244 }