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wine/dlls/mf/samplegrabber.c

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/*
* Copyright 2019 Nikolay Sivov for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define COBJMACROS
#include <float.h>
#include <assert.h>
#include "mfidl.h"
#include "mf_private.h"
#include "wine/debug.h"
#include "wine/list.h"
WINE_DEFAULT_DEBUG_CHANNEL(mfplat);
enum sink_state
{
SINK_STATE_STOPPED = 0,
SINK_STATE_PAUSED,
SINK_STATE_RUNNING,
};
struct sample_grabber;
enum scheduled_item_type
{
ITEM_TYPE_SAMPLE,
ITEM_TYPE_MARKER,
};
struct scheduled_item
{
struct list entry;
enum scheduled_item_type type;
union
{
IMFSample *sample;
struct
{
MFSTREAMSINK_MARKER_TYPE type;
PROPVARIANT context;
} marker;
} u;
};
#define MAX_SAMPLE_QUEUE_LENGTH 4
struct sample_grabber
{
IMFMediaSink IMFMediaSink_iface;
IMFClockStateSink IMFClockStateSink_iface;
IMFMediaEventGenerator IMFMediaEventGenerator_iface;
IMFGetService IMFGetService_iface;
IMFRateSupport IMFRateSupport_iface;
IMFStreamSink IMFStreamSink_iface;
IMFMediaTypeHandler IMFMediaTypeHandler_iface;
IMFAsyncCallback timer_callback;
LONG refcount;
IMFSampleGrabberSinkCallback *callback;
IMFSampleGrabberSinkCallback2 *callback2;
IMFMediaType *media_type;
IMFMediaType *current_media_type;
BOOL is_shut_down;
IMFMediaEventQueue *event_queue;
IMFMediaEventQueue *stream_event_queue;
IMFPresentationClock *clock;
IMFTimer *timer;
IMFAttributes *sample_attributes;
struct list items;
IUnknown *cancel_key;
UINT32 ignore_clock;
UINT64 sample_time_offset;
float rate;
enum sink_state state;
CRITICAL_SECTION cs;
UINT32 sample_count;
IMFSample *samples[MAX_SAMPLE_QUEUE_LENGTH];
};
static IMFSampleGrabberSinkCallback *sample_grabber_get_callback(const struct sample_grabber *sink)
{
return sink->callback2 ? (IMFSampleGrabberSinkCallback *)sink->callback2 : sink->callback;
}
struct sample_grabber_activate_context
{
IMFMediaType *media_type;
IMFSampleGrabberSinkCallback *callback;
BOOL shut_down;
};
static void sample_grabber_free_private(void *user_context)
{
struct sample_grabber_activate_context *context = user_context;
IMFMediaType_Release(context->media_type);
IMFSampleGrabberSinkCallback_Release(context->callback);
free(context);
}
static struct sample_grabber *impl_from_IMFMediaSink(IMFMediaSink *iface)
{
return CONTAINING_RECORD(iface, struct sample_grabber, IMFMediaSink_iface);
}
static struct sample_grabber *impl_from_IMFClockStateSink(IMFClockStateSink *iface)
{
return CONTAINING_RECORD(iface, struct sample_grabber, IMFClockStateSink_iface);
}
static struct sample_grabber *impl_from_IMFMediaEventGenerator(IMFMediaEventGenerator *iface)
{
return CONTAINING_RECORD(iface, struct sample_grabber, IMFMediaEventGenerator_iface);
}
static struct sample_grabber *impl_from_IMFGetService(IMFGetService *iface)
{
return CONTAINING_RECORD(iface, struct sample_grabber, IMFGetService_iface);
}
static struct sample_grabber *impl_from_IMFRateSupport(IMFRateSupport *iface)
{
return CONTAINING_RECORD(iface, struct sample_grabber, IMFRateSupport_iface);
}
static struct sample_grabber *impl_from_IMFStreamSink(IMFStreamSink *iface)
{
return CONTAINING_RECORD(iface, struct sample_grabber, IMFStreamSink_iface);
}
static struct sample_grabber *impl_from_IMFMediaTypeHandler(IMFMediaTypeHandler *iface)
{
return CONTAINING_RECORD(iface, struct sample_grabber, IMFMediaTypeHandler_iface);
}
static struct sample_grabber *impl_from_IMFAsyncCallback(IMFAsyncCallback *iface)
{
return CONTAINING_RECORD(iface, struct sample_grabber, timer_callback);
}
static HRESULT WINAPI sample_grabber_stream_QueryInterface(IMFStreamSink *iface, REFIID riid, void **obj)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), obj);
if (IsEqualIID(riid, &IID_IMFStreamSink) ||
IsEqualIID(riid, &IID_IMFMediaEventGenerator) ||
IsEqualIID(riid, &IID_IUnknown))
{
*obj = &grabber->IMFStreamSink_iface;
}
else if (IsEqualIID(riid, &IID_IMFMediaTypeHandler))
{
*obj = &grabber->IMFMediaTypeHandler_iface;
}
else
{
WARN("Unsupported %s.\n", debugstr_guid(riid));
*obj = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown *)*obj);
return S_OK;
}
static ULONG WINAPI sample_grabber_stream_AddRef(IMFStreamSink *iface)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
return IMFMediaSink_AddRef(&grabber->IMFMediaSink_iface);
}
static void stream_release_pending_item(struct scheduled_item *item)
{
list_remove(&item->entry);
switch (item->type)
{
case ITEM_TYPE_SAMPLE:
IMFSample_Release(item->u.sample);
break;
case ITEM_TYPE_MARKER:
PropVariantClear(&item->u.marker.context);
break;
}
free(item);
}
static ULONG WINAPI sample_grabber_stream_Release(IMFStreamSink *iface)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
return IMFMediaSink_Release(&grabber->IMFMediaSink_iface);
}
static HRESULT WINAPI sample_grabber_stream_GetEvent(IMFStreamSink *iface, DWORD flags, IMFMediaEvent **event)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
TRACE("%p, %#lx, %p.\n", iface, flags, event);
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
return IMFMediaEventQueue_GetEvent(grabber->stream_event_queue, flags, event);
}
static HRESULT WINAPI sample_grabber_stream_BeginGetEvent(IMFStreamSink *iface, IMFAsyncCallback *callback,
IUnknown *state)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
TRACE("%p, %p, %p.\n", iface, callback, state);
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
return IMFMediaEventQueue_BeginGetEvent(grabber->stream_event_queue, callback, state);
}
static HRESULT WINAPI sample_grabber_stream_EndGetEvent(IMFStreamSink *iface, IMFAsyncResult *result,
IMFMediaEvent **event)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
TRACE("%p, %p, %p.\n", iface, result, event);
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
return IMFMediaEventQueue_EndGetEvent(grabber->stream_event_queue, result, event);
}
static HRESULT WINAPI sample_grabber_stream_QueueEvent(IMFStreamSink *iface, MediaEventType event_type,
REFGUID ext_type, HRESULT hr, const PROPVARIANT *value)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
TRACE("%p, %lu, %s, %#lx, %p.\n", iface, event_type, debugstr_guid(ext_type), hr, value);
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
return IMFMediaEventQueue_QueueEventParamVar(grabber->stream_event_queue, event_type, ext_type, hr, value);
}
static HRESULT WINAPI sample_grabber_stream_GetMediaSink(IMFStreamSink *iface, IMFMediaSink **sink)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
TRACE("%p, %p.\n", iface, sink);
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
*sink = &grabber->IMFMediaSink_iface;
IMFMediaSink_AddRef(*sink);
return S_OK;
}
static HRESULT WINAPI sample_grabber_stream_GetIdentifier(IMFStreamSink *iface, DWORD *identifier)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
TRACE("%p, %p.\n", iface, identifier);
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
*identifier = 0;
return S_OK;
}
static HRESULT WINAPI sample_grabber_stream_GetMediaTypeHandler(IMFStreamSink *iface, IMFMediaTypeHandler **handler)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
TRACE("%p, %p.\n", iface, handler);
if (!handler)
return E_POINTER;
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
*handler = &grabber->IMFMediaTypeHandler_iface;
IMFMediaTypeHandler_AddRef(*handler);
return S_OK;
}
static HRESULT sample_grabber_report_sample(struct sample_grabber *grabber, IMFSample *sample, BOOL *sample_delivered)
{
LONGLONG sample_time, sample_duration = 0;
IMFMediaBuffer *buffer;
DWORD flags, size;
GUID major_type;
BYTE *data;
HRESULT hr;
*sample_delivered = FALSE;
hr = IMFMediaType_GetMajorType(grabber->media_type, &major_type);
if (SUCCEEDED(hr))
hr = IMFSample_GetSampleTime(sample, &sample_time);
if (FAILED(IMFSample_GetSampleDuration(sample, &sample_duration)))
sample_duration = 0;
if (SUCCEEDED(hr))
hr = IMFSample_GetSampleFlags(sample, &flags);
if (SUCCEEDED(hr))
{
if (FAILED(IMFSample_ConvertToContiguousBuffer(sample, &buffer)))
return E_UNEXPECTED;
if (SUCCEEDED(hr = IMFMediaBuffer_Lock(buffer, &data, NULL, &size)))
{
*sample_delivered = TRUE;
if (grabber->callback2)
{
hr = IMFSample_CopyAllItems(sample, grabber->sample_attributes);
if (SUCCEEDED(hr))
hr = IMFSampleGrabberSinkCallback2_OnProcessSampleEx(grabber->callback2, &major_type, flags,
sample_time, sample_duration, data, size, grabber->sample_attributes);
}
else
hr = IMFSampleGrabberSinkCallback_OnProcessSample(grabber->callback, &major_type, flags, sample_time,
sample_duration, data, size);
IMFMediaBuffer_Unlock(buffer);
}
IMFMediaBuffer_Release(buffer);
}
return hr;
}
static HRESULT stream_schedule_sample(struct sample_grabber *grabber, struct scheduled_item *item)
{
LONGLONG sampletime;
HRESULT hr;
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
if (FAILED(hr = IMFSample_GetSampleTime(item->u.sample, &sampletime)))
return hr;
if (grabber->cancel_key)
{
IUnknown_Release(grabber->cancel_key);
grabber->cancel_key = NULL;
}
if (FAILED(hr = IMFTimer_SetTimer(grabber->timer, 0, sampletime - grabber->sample_time_offset,
&grabber->timer_callback, NULL, &grabber->cancel_key)))
{
grabber->cancel_key = NULL;
}
return hr;
}
static HRESULT stream_queue_sample(struct sample_grabber *grabber, IMFSample *sample)
{
struct scheduled_item *item;
LONGLONG sampletime;
HRESULT hr;
if (FAILED(hr = IMFSample_GetSampleTime(sample, &sampletime)))
return hr;
if (!(item = calloc(1, sizeof(*item))))
return E_OUTOFMEMORY;
item->type = ITEM_TYPE_SAMPLE;
item->u.sample = sample;
IMFSample_AddRef(item->u.sample);
list_init(&item->entry);
if (list_empty(&grabber->items))
hr = stream_schedule_sample(grabber, item);
if (SUCCEEDED(hr))
list_add_tail(&grabber->items, &item->entry);
else
stream_release_pending_item(item);
return hr;
}
static void sample_grabber_stream_request_sample(struct sample_grabber *grabber)
{
IMFStreamSink_QueueEvent(&grabber->IMFStreamSink_iface, MEStreamSinkRequestSample, &GUID_NULL, S_OK, NULL);
}
static HRESULT WINAPI sample_grabber_stream_ProcessSample(IMFStreamSink *iface, IMFSample *sample)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
BOOL sample_delivered;
LONGLONG sampletime;
HRESULT hr = S_OK;
TRACE("%p, %p.\n", iface, sample);
if (!sample)
return S_OK;
EnterCriticalSection(&grabber->cs);
if (grabber->is_shut_down)
hr = MF_E_STREAMSINK_REMOVED;
else if (grabber->state == SINK_STATE_RUNNING || (grabber->state == SINK_STATE_PAUSED && grabber->ignore_clock))
{
hr = IMFSample_GetSampleTime(sample, &sampletime);
if (SUCCEEDED(hr))
{
if (grabber->ignore_clock)
{
/* OnProcessSample() could return error code, which has to be propagated but isn't a blocker.
Use additional flag indicating that user callback was called at all. */
hr = sample_grabber_report_sample(grabber, sample, &sample_delivered);
if (sample_delivered)
sample_grabber_stream_request_sample(grabber);
}
else
hr = stream_queue_sample(grabber, sample);
}
}
else if (grabber->state == SINK_STATE_PAUSED)
{
if (grabber->sample_count < MAX_SAMPLE_QUEUE_LENGTH)
{
IMFSample_AddRef(sample);
grabber->samples[grabber->sample_count++] = sample;
}
}
LeaveCriticalSection(&grabber->cs);
return hr;
}
static void sample_grabber_stream_report_marker(struct sample_grabber *grabber, const PROPVARIANT *context,
HRESULT hr)
{
IMFStreamSink_QueueEvent(&grabber->IMFStreamSink_iface, MEStreamSinkMarker, &GUID_NULL, hr, context);
}
static HRESULT stream_place_marker(struct sample_grabber *grabber, MFSTREAMSINK_MARKER_TYPE marker_type,
const PROPVARIANT *context_value)
{
struct scheduled_item *item;
HRESULT hr = S_OK;
if (list_empty(&grabber->items))
{
sample_grabber_stream_report_marker(grabber, context_value, S_OK);
return S_OK;
}
if (!(item = calloc(1, sizeof(*item))))
return E_OUTOFMEMORY;
item->type = ITEM_TYPE_MARKER;
item->u.marker.type = marker_type;
list_init(&item->entry);
PropVariantInit(&item->u.marker.context);
if (context_value)
hr = PropVariantCopy(&item->u.marker.context, context_value);
if (SUCCEEDED(hr))
list_add_tail(&grabber->items, &item->entry);
else
stream_release_pending_item(item);
return hr;
}
static HRESULT WINAPI sample_grabber_stream_PlaceMarker(IMFStreamSink *iface, MFSTREAMSINK_MARKER_TYPE marker_type,
const PROPVARIANT *marker_value, const PROPVARIANT *context_value)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
HRESULT hr = S_OK;
TRACE("%p, %d, %p, %p.\n", iface, marker_type, marker_value, context_value);
EnterCriticalSection(&grabber->cs);
if (grabber->is_shut_down)
hr = MF_E_STREAMSINK_REMOVED;
else if (grabber->state == SINK_STATE_RUNNING)
hr = stream_place_marker(grabber, marker_type, context_value);
LeaveCriticalSection(&grabber->cs);
return hr;
}
static HRESULT WINAPI sample_grabber_stream_Flush(IMFStreamSink *iface)
{
struct sample_grabber *grabber = impl_from_IMFStreamSink(iface);
struct scheduled_item *item, *next_item;
HRESULT hr = S_OK;
TRACE("%p.\n", iface);
EnterCriticalSection(&grabber->cs);
if (grabber->is_shut_down)
hr = MF_E_STREAMSINK_REMOVED;
else
{
LIST_FOR_EACH_ENTRY_SAFE(item, next_item, &grabber->items, struct scheduled_item, entry)
{
/* Samples are discarded, markers are processed immediately. */
if (item->type == ITEM_TYPE_MARKER)
sample_grabber_stream_report_marker(grabber, &item->u.marker.context, E_ABORT);
stream_release_pending_item(item);
}
}
LeaveCriticalSection(&grabber->cs);
return hr;
}
static const IMFStreamSinkVtbl sample_grabber_stream_vtbl =
{
sample_grabber_stream_QueryInterface,
sample_grabber_stream_AddRef,
sample_grabber_stream_Release,
sample_grabber_stream_GetEvent,
sample_grabber_stream_BeginGetEvent,
sample_grabber_stream_EndGetEvent,
sample_grabber_stream_QueueEvent,
sample_grabber_stream_GetMediaSink,
sample_grabber_stream_GetIdentifier,
sample_grabber_stream_GetMediaTypeHandler,
sample_grabber_stream_ProcessSample,
sample_grabber_stream_PlaceMarker,
sample_grabber_stream_Flush,
};
static HRESULT WINAPI sample_grabber_stream_type_handler_QueryInterface(IMFMediaTypeHandler *iface, REFIID riid,
void **obj)
{
struct sample_grabber *grabber = impl_from_IMFMediaTypeHandler(iface);
return IMFStreamSink_QueryInterface(&grabber->IMFStreamSink_iface, riid, obj);
}
static ULONG WINAPI sample_grabber_stream_type_handler_AddRef(IMFMediaTypeHandler *iface)
{
struct sample_grabber *grabber = impl_from_IMFMediaTypeHandler(iface);
return IMFStreamSink_AddRef(&grabber->IMFStreamSink_iface);
}
static ULONG WINAPI sample_grabber_stream_type_handler_Release(IMFMediaTypeHandler *iface)
{
struct sample_grabber *grabber = impl_from_IMFMediaTypeHandler(iface);
return IMFStreamSink_Release(&grabber->IMFStreamSink_iface);
}
static HRESULT sample_grabber_stream_is_media_type_supported(struct sample_grabber *grabber, IMFMediaType *in_type)
{
const DWORD supported_flags = MF_MEDIATYPE_EQUAL_MAJOR_TYPES | MF_MEDIATYPE_EQUAL_FORMAT_TYPES |
MF_MEDIATYPE_EQUAL_FORMAT_DATA;
DWORD flags;
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
if (!in_type)
return E_POINTER;
if (IMFMediaType_IsEqual(grabber->media_type, in_type, &flags) == S_OK)
return S_OK;
return (flags & supported_flags) == supported_flags ? S_OK : MF_E_INVALIDMEDIATYPE;
}
static HRESULT WINAPI sample_grabber_stream_type_handler_IsMediaTypeSupported(IMFMediaTypeHandler *iface,
IMFMediaType *in_type, IMFMediaType **out_type)
{
struct sample_grabber *grabber = impl_from_IMFMediaTypeHandler(iface);
TRACE("%p, %p, %p.\n", iface, in_type, out_type);
return sample_grabber_stream_is_media_type_supported(grabber, in_type);
}
static HRESULT WINAPI sample_grabber_stream_type_handler_GetMediaTypeCount(IMFMediaTypeHandler *iface, DWORD *count)
{
TRACE("%p, %p.\n", iface, count);
if (!count)
return E_POINTER;
*count = 0;
return S_OK;
}
static HRESULT WINAPI sample_grabber_stream_type_handler_GetMediaTypeByIndex(IMFMediaTypeHandler *iface, DWORD index,
IMFMediaType **media_type)
{
TRACE("%p, %lu, %p.\n", iface, index, media_type);
if (!media_type)
return E_POINTER;
return MF_E_NO_MORE_TYPES;
}
static HRESULT WINAPI sample_grabber_stream_type_handler_SetCurrentMediaType(IMFMediaTypeHandler *iface,
IMFMediaType *media_type)
{
struct sample_grabber *grabber = impl_from_IMFMediaTypeHandler(iface);
HRESULT hr;
TRACE("%p, %p.\n", iface, media_type);
if (FAILED(hr = sample_grabber_stream_is_media_type_supported(grabber, media_type)))
return hr;
IMFMediaType_Release(grabber->current_media_type);
grabber->current_media_type = media_type;
IMFMediaType_AddRef(grabber->current_media_type);
return S_OK;
}
static HRESULT WINAPI sample_grabber_stream_type_handler_GetCurrentMediaType(IMFMediaTypeHandler *iface,
IMFMediaType **media_type)
{
struct sample_grabber *grabber = impl_from_IMFMediaTypeHandler(iface);
TRACE("%p, %p.\n", iface, media_type);
if (!media_type)
return E_POINTER;
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
*media_type = grabber->current_media_type;
IMFMediaType_AddRef(*media_type);
return S_OK;
}
static HRESULT WINAPI sample_grabber_stream_type_handler_GetMajorType(IMFMediaTypeHandler *iface, GUID *type)
{
struct sample_grabber *grabber = impl_from_IMFMediaTypeHandler(iface);
TRACE("%p, %p.\n", iface, type);
if (!type)
return E_POINTER;
if (grabber->is_shut_down)
return MF_E_STREAMSINK_REMOVED;
return IMFMediaType_GetMajorType(grabber->current_media_type, type);
}
static const IMFMediaTypeHandlerVtbl sample_grabber_stream_type_handler_vtbl =
{
sample_grabber_stream_type_handler_QueryInterface,
sample_grabber_stream_type_handler_AddRef,
sample_grabber_stream_type_handler_Release,
sample_grabber_stream_type_handler_IsMediaTypeSupported,
sample_grabber_stream_type_handler_GetMediaTypeCount,
sample_grabber_stream_type_handler_GetMediaTypeByIndex,
sample_grabber_stream_type_handler_SetCurrentMediaType,
sample_grabber_stream_type_handler_GetCurrentMediaType,
sample_grabber_stream_type_handler_GetMajorType,
};
static HRESULT WINAPI sample_grabber_stream_timer_callback_QueryInterface(IMFAsyncCallback *iface, REFIID riid,
void **obj)
{
if (IsEqualIID(riid, &IID_IMFAsyncCallback) || IsEqualIID(riid, &IID_IUnknown))
{
*obj = iface;
IMFAsyncCallback_AddRef(iface);
return S_OK;
}
WARN("Unsupported %s.\n", debugstr_guid(riid));
*obj = NULL;
return E_NOINTERFACE;
}
static ULONG WINAPI sample_grabber_stream_timer_callback_AddRef(IMFAsyncCallback *iface)
{
struct sample_grabber *grabber = impl_from_IMFAsyncCallback(iface);
return IMFStreamSink_AddRef(&grabber->IMFStreamSink_iface);
}
static ULONG WINAPI sample_grabber_stream_timer_callback_Release(IMFAsyncCallback *iface)
{
struct sample_grabber *grabber = impl_from_IMFAsyncCallback(iface);
return IMFStreamSink_Release(&grabber->IMFStreamSink_iface);
}
static HRESULT WINAPI sample_grabber_stream_timer_callback_GetParameters(IMFAsyncCallback *iface, DWORD *flags,
DWORD *queue)
{
return E_NOTIMPL;
}
static HRESULT WINAPI sample_grabber_stream_timer_callback_Invoke(IMFAsyncCallback *iface, IMFAsyncResult *result)
{
struct sample_grabber *grabber = impl_from_IMFAsyncCallback(iface);
BOOL sample_reported = FALSE, sample_delivered = FALSE;
struct scheduled_item *item, *item2;
HRESULT hr;
EnterCriticalSection(&grabber->cs);
LIST_FOR_EACH_ENTRY_SAFE(item, item2, &grabber->items, struct scheduled_item, entry)
{
if (item->type == ITEM_TYPE_MARKER)
{
sample_grabber_stream_report_marker(grabber, &item->u.marker.context, S_OK);
stream_release_pending_item(item);
}
else if (item->type == ITEM_TYPE_SAMPLE)
{
if (!sample_reported)
{
if (FAILED(hr = sample_grabber_report_sample(grabber, item->u.sample, &sample_delivered)))
WARN("Failed to report a sample, hr %#lx.\n", hr);
stream_release_pending_item(item);
sample_reported = TRUE;
}
else
{
if (FAILED(hr = stream_schedule_sample(grabber, item)))
WARN("Failed to schedule a sample, hr %#lx.\n", hr);
break;
}
}
}
if (sample_delivered)
sample_grabber_stream_request_sample(grabber);
LeaveCriticalSection(&grabber->cs);
return S_OK;
}
static const IMFAsyncCallbackVtbl sample_grabber_stream_timer_callback_vtbl =
{
sample_grabber_stream_timer_callback_QueryInterface,
sample_grabber_stream_timer_callback_AddRef,
sample_grabber_stream_timer_callback_Release,
sample_grabber_stream_timer_callback_GetParameters,
sample_grabber_stream_timer_callback_Invoke,
};
static HRESULT WINAPI sample_grabber_sink_QueryInterface(IMFMediaSink *iface, REFIID riid, void **obj)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), obj);
if (IsEqualIID(riid, &IID_IMFMediaSink) ||
IsEqualIID(riid, &IID_IUnknown))
{
*obj = &grabber->IMFMediaSink_iface;
}
else if (IsEqualIID(riid, &IID_IMFClockStateSink))
{
*obj = &grabber->IMFClockStateSink_iface;
}
else if (IsEqualIID(riid, &IID_IMFMediaEventGenerator))
{
*obj = &grabber->IMFMediaEventGenerator_iface;
}
else if (IsEqualIID(riid, &IID_IMFGetService))
{
*obj = &grabber->IMFGetService_iface;
}
else if (IsEqualIID(riid, &IID_IMFRateSupport))
{
*obj = &grabber->IMFRateSupport_iface;
}
else
{
WARN("Unsupported %s.\n", debugstr_guid(riid));
*obj = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown *)*obj);
return S_OK;
}
static ULONG WINAPI sample_grabber_sink_AddRef(IMFMediaSink *iface)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
ULONG refcount = InterlockedIncrement(&grabber->refcount);
TRACE("%p, refcount %lu.\n", iface, refcount);
return refcount;
}
static void sample_grabber_release_pending_items(struct sample_grabber *grabber)
{
struct scheduled_item *item, *next_item;
LIST_FOR_EACH_ENTRY_SAFE(item, next_item, &grabber->items, struct scheduled_item, entry)
{
stream_release_pending_item(item);
}
}
static void release_samples(struct sample_grabber *grabber)
{
unsigned int i;
for (i = 0; i < MAX_SAMPLE_QUEUE_LENGTH; ++i)
{
if (grabber->samples[i])
{
IMFSample_Release(grabber->samples[i]);
grabber->samples[i] = NULL;
}
}
}
static ULONG WINAPI sample_grabber_sink_Release(IMFMediaSink *iface)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
ULONG refcount = InterlockedDecrement(&grabber->refcount);
TRACE("%p, refcount %lu.\n", iface, refcount);
if (!refcount)
{
if (grabber->callback)
IMFSampleGrabberSinkCallback_Release(grabber->callback);
if (grabber->callback2)
IMFSampleGrabberSinkCallback2_Release(grabber->callback2);
IMFMediaType_Release(grabber->current_media_type);
IMFMediaType_Release(grabber->media_type);
if (grabber->event_queue)
IMFMediaEventQueue_Release(grabber->event_queue);
if (grabber->clock)
IMFPresentationClock_Release(grabber->clock);
if (grabber->timer)
IMFTimer_Release(grabber->timer);
if (grabber->cancel_key)
IUnknown_Release(grabber->cancel_key);
if (grabber->stream_event_queue)
{
IMFMediaEventQueue_Shutdown(grabber->stream_event_queue);
IMFMediaEventQueue_Release(grabber->stream_event_queue);
}
if (grabber->sample_attributes)
IMFAttributes_Release(grabber->sample_attributes);
sample_grabber_release_pending_items(grabber);
release_samples(grabber);
DeleteCriticalSection(&grabber->cs);
free(grabber);
}
return refcount;
}
static HRESULT WINAPI sample_grabber_sink_GetCharacteristics(IMFMediaSink *iface, DWORD *flags)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
TRACE("%p, %p.\n", iface, flags);
if (grabber->is_shut_down)
return MF_E_SHUTDOWN;
*flags = MEDIASINK_FIXED_STREAMS;
if (grabber->ignore_clock)
*flags |= MEDIASINK_RATELESS;
return S_OK;
}
static HRESULT WINAPI sample_grabber_sink_AddStreamSink(IMFMediaSink *iface, DWORD stream_sink_id,
IMFMediaType *media_type, IMFStreamSink **stream_sink)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
TRACE("%p, %#lx, %p, %p.\n", iface, stream_sink_id, media_type, stream_sink);
return grabber->is_shut_down ? MF_E_SHUTDOWN : MF_E_STREAMSINKS_FIXED;
}
static HRESULT WINAPI sample_grabber_sink_RemoveStreamSink(IMFMediaSink *iface, DWORD stream_sink_id)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
TRACE("%p, %#lx.\n", iface, stream_sink_id);
return grabber->is_shut_down ? MF_E_SHUTDOWN : MF_E_STREAMSINKS_FIXED;
}
static HRESULT WINAPI sample_grabber_sink_GetStreamSinkCount(IMFMediaSink *iface, DWORD *count)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
TRACE("%p, %p.\n", iface, count);
if (grabber->is_shut_down)
return MF_E_SHUTDOWN;
*count = 1;
return S_OK;
}
static HRESULT WINAPI sample_grabber_sink_GetStreamSinkByIndex(IMFMediaSink *iface, DWORD index,
IMFStreamSink **stream)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
HRESULT hr = S_OK;
TRACE("%p, %lu, %p.\n", iface, index, stream);
EnterCriticalSection(&grabber->cs);
if (grabber->is_shut_down)
hr = MF_E_SHUTDOWN;
else if (index > 0)
hr = MF_E_INVALIDINDEX;
else
{
*stream = &grabber->IMFStreamSink_iface;
IMFStreamSink_AddRef(*stream);
}
LeaveCriticalSection(&grabber->cs);
return hr;
}
static HRESULT WINAPI sample_grabber_sink_GetStreamSinkById(IMFMediaSink *iface, DWORD stream_sink_id,
IMFStreamSink **stream)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
HRESULT hr = S_OK;
TRACE("%p, %#lx, %p.\n", iface, stream_sink_id, stream);
EnterCriticalSection(&grabber->cs);
if (grabber->is_shut_down)
hr = MF_E_SHUTDOWN;
else if (stream_sink_id > 0)
hr = MF_E_INVALIDSTREAMNUMBER;
else
{
*stream = &grabber->IMFStreamSink_iface;
IMFStreamSink_AddRef(*stream);
}
LeaveCriticalSection(&grabber->cs);
return hr;
}
static void sample_grabber_cancel_timer(struct sample_grabber *grabber)
{
if (grabber->timer && grabber->cancel_key)
{
IMFTimer_CancelTimer(grabber->timer, grabber->cancel_key);
IUnknown_Release(grabber->cancel_key);
grabber->cancel_key = NULL;
}
}
static void sample_grabber_set_presentation_clock(struct sample_grabber *grabber, IMFPresentationClock *clock)
{
if (grabber->clock)
{
sample_grabber_cancel_timer(grabber);
IMFPresentationClock_RemoveClockStateSink(grabber->clock, &grabber->IMFClockStateSink_iface);
IMFPresentationClock_Release(grabber->clock);
if (grabber->timer)
{
IMFTimer_Release(grabber->timer);
grabber->timer = NULL;
}
}
grabber->clock = clock;
if (grabber->clock)
{
IMFPresentationClock_AddRef(grabber->clock);
IMFPresentationClock_AddClockStateSink(grabber->clock, &grabber->IMFClockStateSink_iface);
if (FAILED(IMFPresentationClock_QueryInterface(grabber->clock, &IID_IMFTimer, (void **)&grabber->timer)))
{
WARN("Failed to get IMFTimer interface.\n");
grabber->timer = NULL;
}
}
}
static HRESULT WINAPI sample_grabber_sink_SetPresentationClock(IMFMediaSink *iface, IMFPresentationClock *clock)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
HRESULT hr;
TRACE("%p, %p.\n", iface, clock);
EnterCriticalSection(&grabber->cs);
if (SUCCEEDED(hr = IMFSampleGrabberSinkCallback_OnSetPresentationClock(sample_grabber_get_callback(grabber),
clock)))
{
sample_grabber_set_presentation_clock(grabber, clock);
}
LeaveCriticalSection(&grabber->cs);
return hr;
}
static HRESULT WINAPI sample_grabber_sink_GetPresentationClock(IMFMediaSink *iface, IMFPresentationClock **clock)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
HRESULT hr = S_OK;
TRACE("%p, %p.\n", iface, clock);
if (!clock)
return E_POINTER;
EnterCriticalSection(&grabber->cs);
if (grabber->clock)
{
*clock = grabber->clock;
IMFPresentationClock_AddRef(*clock);
}
else
hr = MF_E_NO_CLOCK;
LeaveCriticalSection(&grabber->cs);
return hr;
}
static HRESULT WINAPI sample_grabber_sink_Shutdown(IMFMediaSink *iface)
{
struct sample_grabber *grabber = impl_from_IMFMediaSink(iface);
HRESULT hr;
TRACE("%p.\n", iface);
EnterCriticalSection(&grabber->cs);
if (grabber->is_shut_down)
hr = MF_E_SHUTDOWN;
else
{
grabber->is_shut_down = TRUE;
sample_grabber_release_pending_items(grabber);
if (SUCCEEDED(hr = IMFSampleGrabberSinkCallback_OnShutdown(sample_grabber_get_callback(grabber))))
{
sample_grabber_set_presentation_clock(grabber, NULL);
IMFMediaEventQueue_Shutdown(grabber->stream_event_queue);
IMFMediaEventQueue_Shutdown(grabber->event_queue);
}
}
LeaveCriticalSection(&grabber->cs);
return hr;
}
static const IMFMediaSinkVtbl sample_grabber_sink_vtbl =
{
sample_grabber_sink_QueryInterface,
sample_grabber_sink_AddRef,
sample_grabber_sink_Release,
sample_grabber_sink_GetCharacteristics,
sample_grabber_sink_AddStreamSink,
sample_grabber_sink_RemoveStreamSink,
sample_grabber_sink_GetStreamSinkCount,
sample_grabber_sink_GetStreamSinkByIndex,
sample_grabber_sink_GetStreamSinkById,
sample_grabber_sink_SetPresentationClock,
sample_grabber_sink_GetPresentationClock,
sample_grabber_sink_Shutdown,
};
static HRESULT WINAPI sample_grabber_clock_sink_QueryInterface(IMFClockStateSink *iface, REFIID riid, void **obj)
{
struct sample_grabber *grabber = impl_from_IMFClockStateSink(iface);
return IMFMediaSink_QueryInterface(&grabber->IMFMediaSink_iface, riid, obj);
}
static ULONG WINAPI sample_grabber_clock_sink_AddRef(IMFClockStateSink *iface)
{
struct sample_grabber *grabber = impl_from_IMFClockStateSink(iface);
return IMFMediaSink_AddRef(&grabber->IMFMediaSink_iface);
}
static ULONG WINAPI sample_grabber_clock_sink_Release(IMFClockStateSink *iface)
{
struct sample_grabber *grabber = impl_from_IMFClockStateSink(iface);
return IMFMediaSink_Release(&grabber->IMFMediaSink_iface);
}
static HRESULT sample_grabber_set_state(struct sample_grabber *grabber, enum sink_state state,
MFTIME systime, LONGLONG offset)
{
static const DWORD events[] =
{
MEStreamSinkStopped, /* SINK_STATE_STOPPED */
MEStreamSinkPaused, /* SINK_STATE_PAUSED */
MEStreamSinkStarted, /* SINK_STATE_RUNNING */
};
BOOL do_callback = FALSE;
HRESULT hr = S_OK;
unsigned int i;
EnterCriticalSection(&grabber->cs);
if (!grabber->is_shut_down)
{
if (state == SINK_STATE_PAUSED && grabber->state == SINK_STATE_STOPPED)
hr = MF_E_INVALID_STATE_TRANSITION;
else
{
if (state == SINK_STATE_STOPPED)
{
sample_grabber_cancel_timer(grabber);
release_samples(grabber);
grabber->sample_count = MAX_SAMPLE_QUEUE_LENGTH;
}
if (state == SINK_STATE_RUNNING && grabber->state != SINK_STATE_RUNNING)
{
/* Every transition to running state sends a bunch requests to build up initial queue. */
for (i = 0; i < grabber->sample_count; ++i)
{
if (grabber->state == SINK_STATE_PAUSED && offset == PRESENTATION_CURRENT_POSITION)
{
assert(grabber->samples[i]);
stream_queue_sample(grabber, grabber->samples[i]);
}
else
{
sample_grabber_stream_request_sample(grabber);
}
}
release_samples(grabber);
grabber->sample_count = 0;
}
do_callback = state != grabber->state || state != SINK_STATE_PAUSED;
if (do_callback)
{
if (grabber->rate == 0.0f && state == SINK_STATE_RUNNING)
IMFStreamSink_QueueEvent(&grabber->IMFStreamSink_iface, MEStreamSinkScrubSampleComplete,
&GUID_NULL, S_OK, NULL);
IMFStreamSink_QueueEvent(&grabber->IMFStreamSink_iface, events[state], &GUID_NULL, S_OK, NULL);
}
grabber->state = state;
}
}
LeaveCriticalSection(&grabber->cs);
if (do_callback)
{
switch (state)
{
case SINK_STATE_STOPPED:
hr = IMFSampleGrabberSinkCallback_OnClockStop(sample_grabber_get_callback(grabber), systime);
break;
case SINK_STATE_PAUSED:
hr = IMFSampleGrabberSinkCallback_OnClockPause(sample_grabber_get_callback(grabber), systime);
break;
case SINK_STATE_RUNNING:
hr = IMFSampleGrabberSinkCallback_OnClockStart(sample_grabber_get_callback(grabber), systime, offset);
break;
}
}
return hr;
}
static HRESULT WINAPI sample_grabber_clock_sink_OnClockStart(IMFClockStateSink *iface, MFTIME systime, LONGLONG offset)
{
struct sample_grabber *grabber = impl_from_IMFClockStateSink(iface);
TRACE("%p, %s, %s.\n", iface, debugstr_time(systime), debugstr_time(offset));
return sample_grabber_set_state(grabber, SINK_STATE_RUNNING, systime, offset);
}
static HRESULT WINAPI sample_grabber_clock_sink_OnClockStop(IMFClockStateSink *iface, MFTIME systime)
{
struct sample_grabber *grabber = impl_from_IMFClockStateSink(iface);
TRACE("%p, %s.\n", iface, debugstr_time(systime));
return sample_grabber_set_state(grabber, SINK_STATE_STOPPED, systime, 0);
}
static HRESULT WINAPI sample_grabber_clock_sink_OnClockPause(IMFClockStateSink *iface, MFTIME systime)
{
struct sample_grabber *grabber = impl_from_IMFClockStateSink(iface);
TRACE("%p, %s.\n", iface, debugstr_time(systime));
return sample_grabber_set_state(grabber, SINK_STATE_PAUSED, systime, 0);
}
static HRESULT WINAPI sample_grabber_clock_sink_OnClockRestart(IMFClockStateSink *iface, MFTIME systime)
{
struct sample_grabber *grabber = impl_from_IMFClockStateSink(iface);
TRACE("%p, %s.\n", iface, debugstr_time(systime));
return sample_grabber_set_state(grabber, SINK_STATE_RUNNING, systime, PRESENTATION_CURRENT_POSITION);
}
static HRESULT WINAPI sample_grabber_clock_sink_OnClockSetRate(IMFClockStateSink *iface, MFTIME systime, float rate)
{
struct sample_grabber *grabber = impl_from_IMFClockStateSink(iface);
HRESULT hr = S_OK;
TRACE("%p, %s, %f.\n", iface, debugstr_time(systime), rate);
EnterCriticalSection(&grabber->cs);
if (grabber->is_shut_down)
hr = MF_E_SHUTDOWN;
else
{
IMFStreamSink_QueueEvent(&grabber->IMFStreamSink_iface, MEStreamSinkRateChanged, &GUID_NULL, S_OK, NULL);
grabber->rate = rate;
}
LeaveCriticalSection(&grabber->cs);
if (SUCCEEDED(hr))
hr = IMFSampleGrabberSinkCallback_OnClockSetRate(sample_grabber_get_callback(grabber), systime, rate);
return hr;
}
static HRESULT WINAPI sample_grabber_events_QueryInterface(IMFMediaEventGenerator *iface, REFIID riid, void **obj)
{
struct sample_grabber *grabber = impl_from_IMFMediaEventGenerator(iface);
return IMFMediaSink_QueryInterface(&grabber->IMFMediaSink_iface, riid, obj);
}
static ULONG WINAPI sample_grabber_events_AddRef(IMFMediaEventGenerator *iface)
{
struct sample_grabber *grabber = impl_from_IMFMediaEventGenerator(iface);
return IMFMediaSink_AddRef(&grabber->IMFMediaSink_iface);
}
static ULONG WINAPI sample_grabber_events_Release(IMFMediaEventGenerator *iface)
{
struct sample_grabber *grabber = impl_from_IMFMediaEventGenerator(iface);
return IMFMediaSink_Release(&grabber->IMFMediaSink_iface);
}
static HRESULT WINAPI sample_grabber_events_GetEvent(IMFMediaEventGenerator *iface, DWORD flags, IMFMediaEvent **event)
{
struct sample_grabber *grabber = impl_from_IMFMediaEventGenerator(iface);
TRACE("%p, %#lx, %p.\n", iface, flags, event);
return IMFMediaEventQueue_GetEvent(grabber->event_queue, flags, event);
}
static HRESULT WINAPI sample_grabber_events_BeginGetEvent(IMFMediaEventGenerator *iface, IMFAsyncCallback *callback,
IUnknown *state)
{
struct sample_grabber *grabber = impl_from_IMFMediaEventGenerator(iface);
TRACE("%p, %p, %p.\n", iface, callback, state);
return IMFMediaEventQueue_BeginGetEvent(grabber->event_queue, callback, state);
}
static HRESULT WINAPI sample_grabber_events_EndGetEvent(IMFMediaEventGenerator *iface, IMFAsyncResult *result,
IMFMediaEvent **event)
{
struct sample_grabber *grabber = impl_from_IMFMediaEventGenerator(iface);
TRACE("%p, %p, %p.\n", iface, result, event);
return IMFMediaEventQueue_EndGetEvent(grabber->event_queue, result, event);
}
static HRESULT WINAPI sample_grabber_events_QueueEvent(IMFMediaEventGenerator *iface, MediaEventType event_type,
REFGUID ext_type, HRESULT hr, const PROPVARIANT *value)
{
struct sample_grabber *grabber = impl_from_IMFMediaEventGenerator(iface);
TRACE("%p, %lu, %s, %#lx, %p.\n", iface, event_type, debugstr_guid(ext_type), hr, value);
return IMFMediaEventQueue_QueueEventParamVar(grabber->event_queue, event_type, ext_type, hr, value);
}
static const IMFMediaEventGeneratorVtbl sample_grabber_sink_events_vtbl =
{
sample_grabber_events_QueryInterface,
sample_grabber_events_AddRef,
sample_grabber_events_Release,
sample_grabber_events_GetEvent,
sample_grabber_events_BeginGetEvent,
sample_grabber_events_EndGetEvent,
sample_grabber_events_QueueEvent,
};
static const IMFClockStateSinkVtbl sample_grabber_clock_sink_vtbl =
{
sample_grabber_clock_sink_QueryInterface,
sample_grabber_clock_sink_AddRef,
sample_grabber_clock_sink_Release,
sample_grabber_clock_sink_OnClockStart,
sample_grabber_clock_sink_OnClockStop,
sample_grabber_clock_sink_OnClockPause,
sample_grabber_clock_sink_OnClockRestart,
sample_grabber_clock_sink_OnClockSetRate,
};
static HRESULT WINAPI sample_grabber_getservice_QueryInterface(IMFGetService *iface, REFIID riid, void **obj)
{
struct sample_grabber *grabber = impl_from_IMFGetService(iface);
return IMFMediaSink_QueryInterface(&grabber->IMFMediaSink_iface, riid, obj);
}
static ULONG WINAPI sample_grabber_getservice_AddRef(IMFGetService *iface)
{
struct sample_grabber *grabber = impl_from_IMFGetService(iface);
return IMFMediaSink_AddRef(&grabber->IMFMediaSink_iface);
}
static ULONG WINAPI sample_grabber_getservice_Release(IMFGetService *iface)
{
struct sample_grabber *grabber = impl_from_IMFGetService(iface);
return IMFMediaSink_Release(&grabber->IMFMediaSink_iface);
}
static HRESULT WINAPI sample_grabber_getservice_GetService(IMFGetService *iface, REFGUID service,
REFIID riid, void **obj)
{
TRACE("%p, %s, %s, %p.\n", iface, debugstr_guid(service), debugstr_guid(riid), obj);
if (IsEqualGUID(service, &MF_RATE_CONTROL_SERVICE))
{
if (IsEqualIID(riid, &IID_IMFRateSupport))
return IMFGetService_QueryInterface(iface, riid, obj);
return E_NOINTERFACE;
}
FIXME("Unsupported service %s, riid %s.\n", debugstr_guid(service), debugstr_guid(riid));
return MF_E_UNSUPPORTED_SERVICE;
}
static const IMFGetServiceVtbl sample_grabber_getservice_vtbl =
{
sample_grabber_getservice_QueryInterface,
sample_grabber_getservice_AddRef,
sample_grabber_getservice_Release,
sample_grabber_getservice_GetService,
};
static HRESULT WINAPI sample_grabber_rate_support_QueryInterface(IMFRateSupport *iface, REFIID riid, void **obj)
{
struct sample_grabber *grabber = impl_from_IMFRateSupport(iface);
return IMFMediaSink_QueryInterface(&grabber->IMFMediaSink_iface, riid, obj);
}
static ULONG WINAPI sample_grabber_rate_support_AddRef(IMFRateSupport *iface)
{
struct sample_grabber *grabber = impl_from_IMFRateSupport(iface);
return IMFMediaSink_AddRef(&grabber->IMFMediaSink_iface);
}
static ULONG WINAPI sample_grabber_rate_support_Release(IMFRateSupport *iface)
{
struct sample_grabber *grabber = impl_from_IMFRateSupport(iface);
return IMFMediaSink_Release(&grabber->IMFMediaSink_iface);
}
static HRESULT WINAPI sample_grabber_rate_support_GetSlowestRate(IMFRateSupport *iface, MFRATE_DIRECTION direction,
BOOL thin, float *rate)
{
TRACE("%p, %d, %d, %p.\n", iface, direction, thin, rate);
*rate = 0.0f;
return S_OK;
}
static HRESULT WINAPI sample_grabber_rate_support_GetFastestRate(IMFRateSupport *iface, MFRATE_DIRECTION direction,
BOOL thin, float *rate)
{
TRACE("%p, %d, %d, %p.\n", iface, direction, thin, rate);
*rate = direction == MFRATE_REVERSE ? -FLT_MAX : FLT_MAX;
return S_OK;
}
static HRESULT WINAPI sample_grabber_rate_support_IsRateSupported(IMFRateSupport *iface, BOOL thin, float rate,
float *ret_rate)
{
TRACE("%p, %d, %f, %p.\n", iface, thin, rate, ret_rate);
if (ret_rate)
*ret_rate = rate;
return S_OK;
}
static const IMFRateSupportVtbl sample_grabber_rate_support_vtbl =
{
sample_grabber_rate_support_QueryInterface,
sample_grabber_rate_support_AddRef,
sample_grabber_rate_support_Release,
sample_grabber_rate_support_GetSlowestRate,
sample_grabber_rate_support_GetFastestRate,
sample_grabber_rate_support_IsRateSupported,
};
static HRESULT sample_grabber_create_object(IMFAttributes *attributes, void *user_context, IUnknown **obj)
{
struct sample_grabber_activate_context *context = user_context;
struct sample_grabber *object;
HRESULT hr;
GUID guid;
TRACE("%p, %p, %p.\n", attributes, user_context, obj);
if (context->shut_down)
return MF_E_SHUTDOWN;
/* At least major type is required. */
if (FAILED(IMFMediaType_GetMajorType(context->media_type, &guid)))
return MF_E_INVALIDMEDIATYPE;
if (!(object = calloc(1, sizeof(*object))))
return E_OUTOFMEMORY;
object->IMFMediaSink_iface.lpVtbl = &sample_grabber_sink_vtbl;
object->IMFClockStateSink_iface.lpVtbl = &sample_grabber_clock_sink_vtbl;
object->IMFMediaEventGenerator_iface.lpVtbl = &sample_grabber_sink_events_vtbl;
object->IMFGetService_iface.lpVtbl = &sample_grabber_getservice_vtbl;
object->IMFRateSupport_iface.lpVtbl = &sample_grabber_rate_support_vtbl;
object->IMFStreamSink_iface.lpVtbl = &sample_grabber_stream_vtbl;
object->IMFMediaTypeHandler_iface.lpVtbl = &sample_grabber_stream_type_handler_vtbl;
object->timer_callback.lpVtbl = &sample_grabber_stream_timer_callback_vtbl;
object->sample_count = MAX_SAMPLE_QUEUE_LENGTH;
object->refcount = 1;
object->rate = 1.0f;
if (FAILED(IMFSampleGrabberSinkCallback_QueryInterface(context->callback, &IID_IMFSampleGrabberSinkCallback2,
(void **)&object->callback2)))
{
object->callback = context->callback;
IMFSampleGrabberSinkCallback_AddRef(object->callback);
}
object->media_type = context->media_type;
IMFMediaType_AddRef(object->media_type);
object->current_media_type = context->media_type;
IMFMediaType_AddRef(object->current_media_type);
IMFAttributes_GetUINT32(attributes, &MF_SAMPLEGRABBERSINK_IGNORE_CLOCK, &object->ignore_clock);
IMFAttributes_GetUINT64(attributes, &MF_SAMPLEGRABBERSINK_SAMPLE_TIME_OFFSET, &object->sample_time_offset);
list_init(&object->items);
InitializeCriticalSection(&object->cs);
if (FAILED(hr = MFCreateEventQueue(&object->stream_event_queue)))
goto failed;
if (FAILED(hr = MFCreateAttributes(&object->sample_attributes, 0)))
goto failed;
if (FAILED(hr = MFCreateEventQueue(&object->event_queue)))
goto failed;
*obj = (IUnknown *)&object->IMFMediaSink_iface;
TRACE("Created %p.\n", *obj);
return S_OK;
failed:
IMFMediaSink_Release(&object->IMFMediaSink_iface);
return hr;
}
static void sample_grabber_shutdown_object(void *user_context, IUnknown *obj)
{
struct sample_grabber_activate_context *context = user_context;
context->shut_down = TRUE;
}
static const struct activate_funcs sample_grabber_activate_funcs =
{
sample_grabber_create_object,
sample_grabber_shutdown_object,
sample_grabber_free_private,
};
/***********************************************************************
* MFCreateSampleGrabberSinkActivate (mf.@)
*/
HRESULT WINAPI MFCreateSampleGrabberSinkActivate(IMFMediaType *media_type, IMFSampleGrabberSinkCallback *callback,
IMFActivate **activate)
{
struct sample_grabber_activate_context *context;
HRESULT hr;
TRACE("%p, %p, %p.\n", media_type, callback, activate);
if (!media_type || !callback || !activate)
return E_POINTER;
if (!(context = calloc(1, sizeof(*context))))
return E_OUTOFMEMORY;
context->media_type = media_type;
IMFMediaType_AddRef(context->media_type);
context->callback = callback;
IMFSampleGrabberSinkCallback_AddRef(context->callback);
if (FAILED(hr = create_activation_object(context, &sample_grabber_activate_funcs, activate)))
sample_grabber_free_private(context);
return hr;
}
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