buffer.c File Reference

#include "dmusic_private.h"
#include "initguid.h"
#include "dmksctrl.h"

Include dependency graph for buffer.c:

Go to the source code of this file.

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (dmusic)
static IDirectMusicBufferImpl *	impl_from_IDirectMusicBuffer (IDirectMusicBuffer *iface)
static HRESULT WINAPI	IDirectMusicBufferImpl_QueryInterface (LPDIRECTMUSICBUFFER iface, REFIID riid, LPVOID *ret_iface)
static ULONG WINAPI	IDirectMusicBufferImpl_AddRef (LPDIRECTMUSICBUFFER iface)
static ULONG WINAPI	IDirectMusicBufferImpl_Release (LPDIRECTMUSICBUFFER iface)
static HRESULT WINAPI	IDirectMusicBufferImpl_Flush (LPDIRECTMUSICBUFFER iface)
static HRESULT WINAPI	IDirectMusicBufferImpl_TotalTime (LPDIRECTMUSICBUFFER iface, LPREFERENCE_TIME prtTime)
static HRESULT WINAPI	IDirectMusicBufferImpl_PackStructured (LPDIRECTMUSICBUFFER iface, REFERENCE_TIME ref_time, DWORD channel_group, DWORD channel_message)
static HRESULT WINAPI	IDirectMusicBufferImpl_PackUnstructured (IDirectMusicBuffer *iface, REFERENCE_TIME ref_time, DWORD channel_group, DWORD len, BYTE *data)
static HRESULT WINAPI	IDirectMusicBufferImpl_ResetReadPtr (LPDIRECTMUSICBUFFER iface)
static HRESULT WINAPI	IDirectMusicBufferImpl_GetNextEvent (LPDIRECTMUSICBUFFER iface, LPREFERENCE_TIME prt, LPDWORD pdwChannelGroup, LPDWORD pdwLength, LPBYTE *ppData)
static HRESULT WINAPI	IDirectMusicBufferImpl_GetRawBufferPtr (LPDIRECTMUSICBUFFER iface, LPBYTE *data)
static HRESULT WINAPI	IDirectMusicBufferImpl_GetStartTime (LPDIRECTMUSICBUFFER iface, LPREFERENCE_TIME ref_time)
static HRESULT WINAPI	IDirectMusicBufferImpl_GetUsedBytes (LPDIRECTMUSICBUFFER iface, LPDWORD used_bytes)
static HRESULT WINAPI	IDirectMusicBufferImpl_GetMaxBytes (LPDIRECTMUSICBUFFER iface, LPDWORD max_bytes)
static HRESULT WINAPI	IDirectMusicBufferImpl_GetBufferFormat (LPDIRECTMUSICBUFFER iface, LPGUID format)
static HRESULT WINAPI	IDirectMusicBufferImpl_SetStartTime (LPDIRECTMUSICBUFFER iface, REFERENCE_TIME ref_time)
static HRESULT WINAPI	IDirectMusicBufferImpl_SetUsedBytes (LPDIRECTMUSICBUFFER iface, DWORD used_bytes)
HRESULT	DMUSIC_CreateDirectMusicBufferImpl (LPDMUS_BUFFERDESC desc, LPVOID *ret_iface)

Variables
static const IDirectMusicBufferVtbl	DirectMusicBuffer_Vtbl

Function Documentation

DMUSIC_CreateDirectMusicBufferImpl()

HRESULT DMUSIC_CreateDirectMusicBufferImpl	(	LPDMUS_BUFFERDESC	desc,
		LPVOID *	ret_iface
	)

Definition at line 293 of file buffer.c.

{
    IDirectMusicBufferImpl* dmbuffer;
 
    TRACE("(%p, %p)\n", desc, ret_iface);
 
    *ret_iface = NULL;
 
    dmbuffer = calloc(1, sizeof(IDirectMusicBufferImpl));
    if (!dmbuffer)
        return E_OUTOFMEMORY;
 
    dmbuffer->IDirectMusicBuffer_iface.lpVtbl = &DirectMusicBuffer_Vtbl;
    dmbuffer->ref = 1;
 
    if (IsEqualGUID(&desc->guidBufferFormat, &GUID_NULL))
        dmbuffer->format = KSDATAFORMAT_SUBTYPE_MIDI;
    else
        dmbuffer->format = desc->guidBufferFormat;
    dmbuffer->size = (desc->cbBuffer + 3) & ~3; /* Buffer size must be multiple of 4 bytes */
 
    dmbuffer->data = malloc(dmbuffer->size);
    if (!dmbuffer->data) {
        free(dmbuffer);
        return E_OUTOFMEMORY;
    }
 
    *ret_iface = &dmbuffer->IDirectMusicBuffer_iface;
 
    return S_OK;
}

Referenced by IDirectMusic8Impl_CreateMusicBuffer().

IDirectMusicBufferImpl_AddRef()

static ULONG WINAPI IDirectMusicBufferImpl_AddRef ( LPDIRECTMUSICBUFFER  iface )

static

Definition at line 53 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
    ULONG ref = InterlockedIncrement(&This->ref);
 
    TRACE("(%p): new ref = %lu\n", iface, ref);
 
    return ref;
}

IDirectMusicBufferImpl_Flush()

static HRESULT WINAPI IDirectMusicBufferImpl_Flush ( LPDIRECTMUSICBUFFER  iface )

static

Definition at line 79 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 
    TRACE("(%p)->()\n", iface);
 
    This->write_pos = 0;
 
    return S_OK;
}

IDirectMusicBufferImpl_GetBufferFormat()

static HRESULT WINAPI IDirectMusicBufferImpl_GetBufferFormat ( LPDIRECTMUSICBUFFER  iface, LPGUID  format  )

static

Definition at line 236 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 
    TRACE("(%p)->(%p)\n", iface, format);
 
    if (!format)
        return E_POINTER;
 
    *format = This->format;
    return S_OK;
}

IDirectMusicBufferImpl_GetMaxBytes()

static HRESULT WINAPI IDirectMusicBufferImpl_GetMaxBytes ( LPDIRECTMUSICBUFFER  iface, LPDWORD  max_bytes  )

static

Definition at line 222 of file buffer.c.

{
    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;
}

IDirectMusicBufferImpl_GetNextEvent()

static HRESULT WINAPI IDirectMusicBufferImpl_GetNextEvent ( LPDIRECTMUSICBUFFER  iface, LPREFERENCE_TIME  prt, LPDWORD  pdwChannelGroup, LPDWORD  pdwLength, LPBYTE *  ppData  )

static

Definition at line 169 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 
    FIXME("(%p, %p, %p, %p, %p): stub\n", This, prt, pdwChannelGroup, pdwLength, ppData);
 
    return S_OK;
}

IDirectMusicBufferImpl_GetRawBufferPtr()

static HRESULT WINAPI IDirectMusicBufferImpl_GetRawBufferPtr ( LPDIRECTMUSICBUFFER  iface, LPBYTE *  data  )

static

Definition at line 178 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 
    TRACE("(%p)->(%p)\n", iface, data);
 
    if (!data)
        return E_POINTER;
 
    *data = This->data;
 
    return S_OK;
}

IDirectMusicBufferImpl_GetStartTime()

static HRESULT WINAPI IDirectMusicBufferImpl_GetStartTime ( LPDIRECTMUSICBUFFER  iface, LPREFERENCE_TIME  ref_time  )

static

Definition at line 192 of file buffer.c.

{
    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;
}

IDirectMusicBufferImpl_GetUsedBytes()

static HRESULT WINAPI IDirectMusicBufferImpl_GetUsedBytes ( LPDIRECTMUSICBUFFER  iface, LPDWORD  used_bytes  )

static

Definition at line 208 of file buffer.c.

{
    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;
}

IDirectMusicBufferImpl_PackStructured()

static HRESULT WINAPI IDirectMusicBufferImpl_PackStructured ( LPDIRECTMUSICBUFFER  iface, REFERENCE_TIME  ref_time, DWORD  channel_group, DWORD  channel_message  )

static

Definition at line 99 of file buffer.c.

{
    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, %lu, %#lx)\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;
}

IDirectMusicBufferImpl_PackUnstructured()

static HRESULT WINAPI IDirectMusicBufferImpl_PackUnstructured ( IDirectMusicBuffer *  iface, REFERENCE_TIME  ref_time, DWORD  channel_group, DWORD  len, BYTE *  data  )

static

Definition at line 133 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
    DWORD new_write_pos = This->write_pos + DMUS_EVENT_SIZE(len);
    DMUS_EVENTHEADER *header;
 
    TRACE("(%p, 0x%s, %ld, %ld, %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;
}

IDirectMusicBufferImpl_QueryInterface()

static HRESULT WINAPI IDirectMusicBufferImpl_QueryInterface ( LPDIRECTMUSICBUFFER  iface, REFIID  riid, LPVOID *  ret_iface  )

static

Definition at line 34 of file buffer.c.

{
    TRACE("(%p)->(%s, %p)\n", iface, debugstr_dmguid(riid), ret_iface);
 
    if (IsEqualIID(riid, &IID_IUnknown) ||
        IsEqualIID(riid, &IID_IDirectMusicBuffer))
    {
        IDirectMusicBuffer_AddRef(iface);
        *ret_iface = iface;
        return S_OK;
    }
 
    *ret_iface = NULL;
 
    WARN("(%p)->(%s, %p): not found\n", iface, debugstr_dmguid(riid), ret_iface);
 
    return E_NOINTERFACE;
}

IDirectMusicBufferImpl_Release()

static ULONG WINAPI IDirectMusicBufferImpl_Release ( LPDIRECTMUSICBUFFER  iface )

static

Definition at line 63 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
    ULONG ref = InterlockedDecrement(&This->ref);
 
    TRACE("(%p): new ref = %lu\n", iface, ref);
 
    if (!ref) {
        free(This->data);
        free(This);
    }
 
    return ref;
}

IDirectMusicBufferImpl_ResetReadPtr()

static HRESULT WINAPI IDirectMusicBufferImpl_ResetReadPtr ( LPDIRECTMUSICBUFFER  iface )

static

Definition at line 160 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 
    FIXME("(%p): stub\n", This);
 
    return S_OK;
}

IDirectMusicBufferImpl_SetStartTime()

static HRESULT WINAPI IDirectMusicBufferImpl_SetStartTime ( LPDIRECTMUSICBUFFER  iface, REFERENCE_TIME  ref_time  )

static

Definition at line 249 of file buffer.c.

{
    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;
}

IDirectMusicBufferImpl_SetUsedBytes()

static HRESULT WINAPI IDirectMusicBufferImpl_SetUsedBytes ( LPDIRECTMUSICBUFFER  iface, DWORD  used_bytes  )

static

Definition at line 260 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 
    TRACE("(%p, %lu)\n", iface, used_bytes);
 
    if (used_bytes > This->size)
        return DMUS_E_BUFFER_FULL;
 
    This->write_pos = used_bytes;
 
    return S_OK;
}

IDirectMusicBufferImpl_TotalTime()

static HRESULT WINAPI IDirectMusicBufferImpl_TotalTime ( LPDIRECTMUSICBUFFER  iface, LPREFERENCE_TIME  prtTime  )

static

Definition at line 90 of file buffer.c.

{
    IDirectMusicBufferImpl *This = impl_from_IDirectMusicBuffer(iface);
 
    FIXME("(%p, %p): stub\n", This, prtTime);
 
    return S_OK;
}

impl_from_IDirectMusicBuffer()

static IDirectMusicBufferImpl * impl_from_IDirectMusicBuffer ( IDirectMusicBuffer *  iface )

inlinestatic

Definition at line 28 of file buffer.c.

{
    return CONTAINING_RECORD(iface, IDirectMusicBufferImpl, IDirectMusicBuffer_iface);
}

Referenced by IDirectMusicBufferImpl_AddRef(), IDirectMusicBufferImpl_Flush(), IDirectMusicBufferImpl_GetBufferFormat(), IDirectMusicBufferImpl_GetMaxBytes(), IDirectMusicBufferImpl_GetNextEvent(), IDirectMusicBufferImpl_GetRawBufferPtr(), IDirectMusicBufferImpl_GetStartTime(), IDirectMusicBufferImpl_GetUsedBytes(), IDirectMusicBufferImpl_PackStructured(), IDirectMusicBufferImpl_PackUnstructured(), IDirectMusicBufferImpl_Release(), IDirectMusicBufferImpl_ResetReadPtr(), IDirectMusicBufferImpl_SetStartTime(), IDirectMusicBufferImpl_SetUsedBytes(), and IDirectMusicBufferImpl_TotalTime().

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

dmusic

)

Variable Documentation

DirectMusicBuffer_Vtbl

const IDirectMusicBufferVtbl DirectMusicBuffer_Vtbl

static

Initial value:

= {
    IDirectMusicBufferImpl_QueryInterface,
    IDirectMusicBufferImpl_AddRef,
    IDirectMusicBufferImpl_Release,
    IDirectMusicBufferImpl_Flush,
    IDirectMusicBufferImpl_TotalTime,
    IDirectMusicBufferImpl_PackStructured,
    IDirectMusicBufferImpl_PackUnstructured,
    IDirectMusicBufferImpl_ResetReadPtr,
    IDirectMusicBufferImpl_GetNextEvent,
    IDirectMusicBufferImpl_GetRawBufferPtr,
    IDirectMusicBufferImpl_GetStartTime,
    IDirectMusicBufferImpl_GetUsedBytes,
    IDirectMusicBufferImpl_GetMaxBytes,
    IDirectMusicBufferImpl_GetBufferFormat,
    IDirectMusicBufferImpl_SetStartTime,
    IDirectMusicBufferImpl_SetUsedBytes
}

Definition at line 274 of file buffer.c.

Referenced by DMUSIC_CreateDirectMusicBufferImpl().