static HRESULT WINAPI IDirectMusicBufferImpl_PackStructured(LPDIRECTMUSICBUFFER iface, REFERENCE_TIME ref_time, DWORD channel_group, DWORD channel_message)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
DWORD new_write_pos = This->write_pos + DMUS_EVENT_SIZE(sizeof(channel_message));
DMUS_EVENTHEADER *header;
TRACE("(%p)->(0x%s, %u, 0x%x)\n", iface, wine_dbgstr_longlong(ref_time), channel_group, channel_message);
if (new_write_pos > This->size)
return DMUS_E_BUFFER_FULL;
/* Channel_message 0xZZYYXX (3 bytes) is a midi message where XX = status byte, YY = byte 1 and ZZ = byte 2 */
if (!(channel_message & 0x80))
{
/* Status byte MSB is always set */
return DMUS_E_INVALID_EVENT;
}
if (!This->write_pos)
This->start_time = ref_time;
header = (DMUS_EVENTHEADER*)&This->data[This->write_pos];
header->cbEvent = 3; /* Midi message takes 4 bytes space but only 3 are relevant */
header->dwChannelGroup = channel_group;
header->rtDelta = ref_time - This->start_time;
header->dwFlags = DMUS_EVENT_STRUCTURED;
*(DWORD*)&header[1] = channel_message;
This->write_pos = new_write_pos;
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_PackUnstructured(IDirectMusicBuffer *iface,
REFERENCE_TIME ref_time, DWORD channel_group, DWORD len, BYTE *data)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
DWORD new_write_pos = This->write_pos + DMUS_EVENT_SIZE(len);
DMUS_EVENTHEADER *header;
TRACE("(%p, 0x%s, %d, %d, %p)\n", This, wine_dbgstr_longlong(ref_time), channel_group, len, data);
if (new_write_pos > This->size)
return DMUS_E_BUFFER_FULL;
if (!This->write_pos)
This->start_time = ref_time;
header = (DMUS_EVENTHEADER*)&This->data[This->write_pos];
header->cbEvent = len;
header->dwChannelGroup = channel_group;
header->rtDelta = ref_time - This->start_time;
header->dwFlags = 0;
memcpy(&header[1], data, len);
This->write_pos = new_write_pos;
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_TotalTime(LPDIRECTMUSICBUFFER iface, LPREFERENCE_TIME prtTime)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
FIXME("(%p, %p): stub\n", This, prtTime);
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_GetNextEvent(LPDIRECTMUSICBUFFER iface, LPREFERENCE_TIME prt, LPDWORD pdwChannelGroup, LPDWORD pdwLength, LPBYTE* ppData)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
FIXME("(%p, %p, %p, %p, %p): stub\n", This, prt, pdwChannelGroup, pdwLength, ppData);
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_ResetReadPtr(LPDIRECTMUSICBUFFER iface)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
FIXME("(%p): stub\n", This);
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_PackUnstructured(LPDIRECTMUSICBUFFER iface, REFERENCE_TIME rt, DWORD dwChannelGroup, DWORD cb, LPBYTE lpb)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
FIXME("(%p, 0x%s, %d, %d, %p): stub\n", This, wine_dbgstr_longlong(rt), dwChannelGroup, cb, lpb);
return S_OK;
}
static ULONG WINAPI IDirectMusicBufferImpl_AddRef(LPDIRECTMUSICBUFFER iface)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p)->(): new ref = %u\n", iface, ref);
return ref;
}
/* IDirectMusicBufferImpl IDirectMusicBuffer part: */
static HRESULT WINAPI IDirectMusicBufferImpl_Flush(LPDIRECTMUSICBUFFER iface)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
TRACE("(%p)->()\n", iface);
This->write_pos = 0;
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_SetStartTime(LPDIRECTMUSICBUFFER iface, REFERENCE_TIME ref_time)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
TRACE("(%p)->(0x%s)\n", This, wine_dbgstr_longlong(ref_time));
This->start_time = ref_time;
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_GetBufferFormat(LPDIRECTMUSICBUFFER iface, LPGUID format)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
TRACE("(%p)->(%p)\n", iface, format);
if (!format)
return E_POINTER;
*format = This->format;
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_SetUsedBytes(LPDIRECTMUSICBUFFER iface, DWORD used_bytes)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
TRACE("(%p)->(%u)\n", iface, used_bytes);
if (used_bytes > This->size)
return DMUS_E_BUFFER_FULL;
This->write_pos = used_bytes;
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_GetMaxBytes(LPDIRECTMUSICBUFFER iface, LPDWORD max_bytes)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
TRACE("(%p)->(%p)\n", iface, max_bytes);
if (!max_bytes)
return E_POINTER;
*max_bytes = This->size;
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_GetUsedBytes(LPDIRECTMUSICBUFFER iface, LPDWORD used_bytes)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
TRACE("(%p)->(%p)\n", iface, used_bytes);
if (!used_bytes)
return E_POINTER;
*used_bytes = This->write_pos;
return S_OK;
}
static HRESULT WINAPI IDirectMusicBufferImpl_GetRawBufferPtr(LPDIRECTMUSICBUFFER iface, LPBYTE* data)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
TRACE("(%p)->(%p)\n", iface, data);
if (!data)
return E_POINTER;
*data = This->data;
return S_OK;
}
static ULONG WINAPI IDirectMusicBufferImpl_Release(LPDIRECTMUSICBUFFER iface)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p)->(): new ref = %u\n", iface, ref);
if (!ref) {
HeapFree(GetProcessHeap(), 0, This->data);
HeapFree(GetProcessHeap(), 0, This);
DMUSIC_UnlockModule();
}
return ref;
}
static HRESULT WINAPI IDirectMusicBufferImpl_GetStartTime(LPDIRECTMUSICBUFFER iface, LPREFERENCE_TIME ref_time)
{
IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
TRACE("(%p)->(%p)\n", iface, ref_time);
if (!ref_time)
return E_POINTER;
if (!This->write_pos)
return DMUS_E_BUFFER_EMPTY;
*ref_time = This->start_time;
return S_OK;
}