/* * * Copyright 2014 Austin English * * 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 */ #include #define COBJMACROS #define NONAMELESSUNION #include "windef.h" #include "winbase.h" #include "ole2.h" #include "rpcproxy.h" #undef INITGUID #include #include "mfapi.h" #include "mferror.h" #include "mfidl.h" #include "mfreadwrite.h" #include "wine/debug.h" #include "wine/heap.h" #include "wine/list.h" #include "mf_private.h" WINE_DEFAULT_DEBUG_CHANNEL(mfplat); static HINSTANCE mfinstance; BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved) { switch (reason) { case DLL_WINE_PREATTACH: return FALSE; /* prefer native version */ case DLL_PROCESS_ATTACH: mfinstance = instance; DisableThreadLibraryCalls(instance); break; } return TRUE; } HRESULT WINAPI DllCanUnloadNow(void) { return S_FALSE; } HRESULT WINAPI DllRegisterServer(void) { return __wine_register_resources( mfinstance ); } HRESULT WINAPI DllUnregisterServer(void) { return __wine_unregister_resources( mfinstance ); } struct stream_response { struct list entry; HRESULT status; DWORD stream_index; DWORD stream_flags; LONGLONG timestamp; IMFSample *sample; }; enum media_stream_state { STREAM_STATE_READY = 0, STREAM_STATE_EOS, }; enum media_source_state { SOURCE_STATE_STOPPED = 0, SOURCE_STATE_STARTED, }; enum media_stream_flags { STREAM_FLAG_SAMPLE_REQUESTED = 0x1, /* Protects from making multiple sample requests. */ STREAM_FLAG_SELECTED = 0x2, /* Mirrors descriptor, used to simplify tests when starting the source. */ STREAM_FLAG_PRESENTED = 0x4, /* Set if stream was selected last time Start() was called. */ }; struct media_stream { IMFMediaStream *stream; IMFMediaType *current; IMFTransform *decoder; unsigned int id; unsigned int index; enum media_stream_state state; unsigned int flags; unsigned int requests; unsigned int responses; }; enum source_reader_async_op { SOURCE_READER_ASYNC_READ, SOURCE_READER_ASYNC_SEEK, SOURCE_READER_ASYNC_FLUSH, SOURCE_READER_ASYNC_SAMPLE_READY, }; struct source_reader_async_command { IUnknown IUnknown_iface; LONG refcount; enum source_reader_async_op op; union { struct { unsigned int flags; unsigned int stream_index; } read; struct { GUID format; PROPVARIANT position; } seek; struct { unsigned int stream_index; } flush; struct { unsigned int stream_index; } sample; } u; }; enum source_reader_flags { SOURCE_READER_FLUSHING = 0x1, SOURCE_READER_SEEKING = 0x2, SOURCE_READER_SHUTDOWN_ON_RELEASE = 0x4, }; struct source_reader { IMFSourceReader IMFSourceReader_iface; IMFAsyncCallback source_events_callback; IMFAsyncCallback stream_events_callback; IMFAsyncCallback async_commands_callback; LONG refcount; IMFMediaSource *source; IMFPresentationDescriptor *descriptor; IMFSourceReaderCallback *async_callback; unsigned int first_audio_stream_index; unsigned int first_video_stream_index; unsigned int last_read_index; unsigned int stream_count; unsigned int flags; enum media_source_state source_state; struct media_stream *streams; struct list responses; CRITICAL_SECTION cs; CONDITION_VARIABLE sample_event; CONDITION_VARIABLE state_event; }; static inline struct source_reader *impl_from_IMFSourceReader(IMFSourceReader *iface) { return CONTAINING_RECORD(iface, struct source_reader, IMFSourceReader_iface); } static struct source_reader *impl_from_source_callback_IMFAsyncCallback(IMFAsyncCallback *iface) { return CONTAINING_RECORD(iface, struct source_reader, source_events_callback); } static struct source_reader *impl_from_stream_callback_IMFAsyncCallback(IMFAsyncCallback *iface) { return CONTAINING_RECORD(iface, struct source_reader, stream_events_callback); } static struct source_reader *impl_from_async_commands_callback_IMFAsyncCallback(IMFAsyncCallback *iface) { return CONTAINING_RECORD(iface, struct source_reader, async_commands_callback); } static struct source_reader_async_command *impl_from_async_command_IUnknown(IUnknown *iface) { return CONTAINING_RECORD(iface, struct source_reader_async_command, IUnknown_iface); } static HRESULT WINAPI source_reader_async_command_QueryInterface(IUnknown *iface, REFIID riid, void **obj) { if (IsEqualIID(riid, &IID_IUnknown)) { *obj = iface; IUnknown_AddRef(iface); return S_OK; } WARN("Unsupported interface %s.\n", debugstr_guid(riid)); *obj = NULL; return E_NOINTERFACE; } static ULONG WINAPI source_reader_async_command_AddRef(IUnknown *iface) { struct source_reader_async_command *command = impl_from_async_command_IUnknown(iface); return InterlockedIncrement(&command->refcount); } static ULONG WINAPI source_reader_async_command_Release(IUnknown *iface) { struct source_reader_async_command *command = impl_from_async_command_IUnknown(iface); ULONG refcount = InterlockedIncrement(&command->refcount); if (!refcount) { if (command->op == SOURCE_READER_ASYNC_SEEK) PropVariantClear(&command->u.seek.position); heap_free(command); } return refcount; } static const IUnknownVtbl source_reader_async_command_vtbl = { source_reader_async_command_QueryInterface, source_reader_async_command_AddRef, source_reader_async_command_Release, }; static HRESULT source_reader_create_async_op(enum source_reader_async_op op, struct source_reader_async_command **ret) { struct source_reader_async_command *command; if (!(command = heap_alloc_zero(sizeof(*command)))) return E_OUTOFMEMORY; command->IUnknown_iface.lpVtbl = &source_reader_async_command_vtbl; command->op = op; *ret = command; return S_OK; } static HRESULT media_event_get_object(IMFMediaEvent *event, REFIID riid, void **obj) { PROPVARIANT value; HRESULT hr; PropVariantInit(&value); if (FAILED(hr = IMFMediaEvent_GetValue(event, &value))) { WARN("Failed to get event value, hr %#x.\n", hr); return hr; } if (value.vt != VT_UNKNOWN || !value.u.punkVal) { WARN("Unexpected value type %d.\n", value.vt); PropVariantClear(&value); return E_UNEXPECTED; } hr = IUnknown_QueryInterface(value.u.punkVal, riid, obj); PropVariantClear(&value); if (FAILED(hr)) { WARN("Unexpected object type.\n"); return hr; } return hr; } static HRESULT media_stream_get_id(IMFMediaStream *stream, DWORD *id) { IMFStreamDescriptor *sd; HRESULT hr; if (SUCCEEDED(hr = IMFMediaStream_GetStreamDescriptor(stream, &sd))) { hr = IMFStreamDescriptor_GetStreamIdentifier(sd, id); IMFStreamDescriptor_Release(sd); } return hr; } static HRESULT WINAPI source_reader_callback_QueryInterface(IMFAsyncCallback *iface, REFIID riid, void **obj) { TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), 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 source_reader_source_events_callback_AddRef(IMFAsyncCallback *iface) { struct source_reader *reader = impl_from_source_callback_IMFAsyncCallback(iface); return IMFSourceReader_AddRef(&reader->IMFSourceReader_iface); } static ULONG WINAPI source_reader_source_events_callback_Release(IMFAsyncCallback *iface) { struct source_reader *reader = impl_from_source_callback_IMFAsyncCallback(iface); return IMFSourceReader_Release(&reader->IMFSourceReader_iface); } static HRESULT WINAPI source_reader_callback_GetParameters(IMFAsyncCallback *iface, DWORD *flags, DWORD *queue) { return E_NOTIMPL; } static void source_reader_queue_response(struct source_reader *reader, struct media_stream *stream, HRESULT status, DWORD stream_flags, LONGLONG timestamp, IMFSample *sample) { struct source_reader_async_command *command; struct stream_response *response; HRESULT hr; response = heap_alloc_zero(sizeof(*response)); response->status = status; response->stream_index = stream->index; response->stream_flags = stream_flags; response->timestamp = timestamp; response->sample = sample; if (response->sample) IMFSample_AddRef(response->sample); list_add_tail(&reader->responses, &response->entry); stream->responses++; if (stream->requests) { if (reader->async_callback) { if (SUCCEEDED(source_reader_create_async_op(SOURCE_READER_ASYNC_SAMPLE_READY, &command))) { command->u.sample.stream_index = stream->index; if (FAILED(hr = MFPutWorkItem(MFASYNC_CALLBACK_QUEUE_STANDARD, &reader->async_commands_callback, &command->IUnknown_iface))) WARN("Failed to submit async result, hr %#x.\n", hr); IUnknown_Release(&command->IUnknown_iface); } } else WakeAllConditionVariable(&reader->sample_event); stream->requests--; } } static HRESULT source_reader_request_sample(struct source_reader *reader, struct media_stream *stream) { HRESULT hr = S_OK; if (stream->stream && !(stream->flags & STREAM_FLAG_SAMPLE_REQUESTED)) { if (FAILED(hr = IMFMediaStream_RequestSample(stream->stream, NULL))) WARN("Sample request failed, hr %#x.\n", hr); else { stream->flags |= STREAM_FLAG_SAMPLE_REQUESTED; } } return hr; } static HRESULT source_reader_new_stream_handler(struct source_reader *reader, IMFMediaEvent *event) { IMFMediaStream *stream; unsigned int i; DWORD id = 0; HRESULT hr; if (FAILED(hr = media_event_get_object(event, &IID_IMFMediaStream, (void **)&stream))) { WARN("Failed to get stream object, hr %#x.\n", hr); return hr; } TRACE("Got new stream %p.\n", stream); if (FAILED(hr = media_stream_get_id(stream, &id))) { WARN("Unidentified stream %p, hr %#x.\n", stream, hr); IMFMediaStream_Release(stream); return hr; } EnterCriticalSection(&reader->cs); for (i = 0; i < reader->stream_count; ++i) { if (id == reader->streams[i].id) { if (!reader->streams[i].stream) { reader->streams[i].stream = stream; IMFMediaStream_AddRef(reader->streams[i].stream); if (FAILED(hr = IMFMediaStream_BeginGetEvent(stream, &reader->stream_events_callback, (IUnknown *)stream))) { WARN("Failed to subscribe to stream events, hr %#x.\n", hr); } if (reader->streams[i].requests) if (FAILED(source_reader_request_sample(reader, &reader->streams[i]))) WakeAllConditionVariable(&reader->sample_event); } break; } } if (i == reader->stream_count) WARN("Stream with id %#x was not present in presentation descriptor.\n", id); LeaveCriticalSection(&reader->cs); IMFMediaStream_Release(stream); return hr; } static HRESULT source_reader_source_state_handler(struct source_reader *reader, MediaEventType event_type) { EnterCriticalSection(&reader->cs); switch (event_type) { case MESourceStarted: reader->source_state = SOURCE_STATE_STARTED; break; case MESourceStopped: reader->source_state = SOURCE_STATE_STOPPED; break; case MESourceSeeked: reader->flags &= ~SOURCE_READER_SEEKING; break; default: WARN("Unhandled event %d.\n", event_type); } LeaveCriticalSection(&reader->cs); WakeAllConditionVariable(&reader->state_event); return S_OK; } static HRESULT WINAPI source_reader_source_events_callback_Invoke(IMFAsyncCallback *iface, IMFAsyncResult *result) { struct source_reader *reader = impl_from_source_callback_IMFAsyncCallback(iface); MediaEventType event_type; IMFMediaSource *source; IMFMediaEvent *event; HRESULT hr; TRACE("%p, %p.\n", iface, result); source = (IMFMediaSource *)IMFAsyncResult_GetStateNoAddRef(result); if (FAILED(hr = IMFMediaSource_EndGetEvent(source, result, &event))) return hr; IMFMediaEvent_GetType(event, &event_type); TRACE("Got event %u.\n", event_type); switch (event_type) { case MENewStream: hr = source_reader_new_stream_handler(reader, event); break; case MESourceStarted: case MESourcePaused: case MESourceStopped: case MESourceSeeked: hr = source_reader_source_state_handler(reader, event_type); break; case MEBufferingStarted: case MEBufferingStopped: case MEConnectStart: case MEConnectEnd: case MEExtendedType: case MESourceCharacteristicsChanged: case MESourceMetadataChanged: case MEContentProtectionMetadata: case MEDeviceThermalStateChanged: if (reader->async_callback) IMFSourceReaderCallback_OnEvent(reader->async_callback, MF_SOURCE_READER_MEDIASOURCE, event); break; default: ; } if (FAILED(hr)) WARN("Failed while handling %d event, hr %#x.\n", event_type, hr); IMFMediaEvent_Release(event); IMFMediaSource_BeginGetEvent(source, iface, (IUnknown *)source); return S_OK; } static const IMFAsyncCallbackVtbl source_events_callback_vtbl = { source_reader_callback_QueryInterface, source_reader_source_events_callback_AddRef, source_reader_source_events_callback_Release, source_reader_callback_GetParameters, source_reader_source_events_callback_Invoke, }; static ULONG WINAPI source_reader_stream_events_callback_AddRef(IMFAsyncCallback *iface) { struct source_reader *reader = impl_from_stream_callback_IMFAsyncCallback(iface); return IMFSourceReader_AddRef(&reader->IMFSourceReader_iface); } static ULONG WINAPI source_reader_stream_events_callback_Release(IMFAsyncCallback *iface) { struct source_reader *reader = impl_from_stream_callback_IMFAsyncCallback(iface); return IMFSourceReader_Release(&reader->IMFSourceReader_iface); } static HRESULT source_reader_pull_stream_samples(struct source_reader *reader, struct media_stream *stream) { MFT_OUTPUT_STREAM_INFO stream_info = { 0 }; MFT_OUTPUT_DATA_BUFFER out_buffer; IMFMediaBuffer *buffer; LONGLONG timestamp; DWORD status; HRESULT hr; if (FAILED(hr = IMFTransform_GetOutputStreamInfo(stream->decoder, 0, &stream_info))) { WARN("Failed to get output stream info, hr %#x.\n", hr); return hr; } for (;;) { memset(&out_buffer, 0, sizeof(out_buffer)); if (!(stream_info.dwFlags & MFT_OUTPUT_STREAM_PROVIDES_SAMPLES)) { if (FAILED(hr = MFCreateSample(&out_buffer.pSample))) break; if (FAILED(hr = MFCreateAlignedMemoryBuffer(stream_info.cbSize, stream_info.cbAlignment, &buffer))) { IMFSample_Release(out_buffer.pSample); break; } IMFSample_AddBuffer(out_buffer.pSample, buffer); IMFMediaBuffer_Release(buffer); } if (FAILED(hr = IMFTransform_ProcessOutput(stream->decoder, 0, 1, &out_buffer, &status))) { if (out_buffer.pSample) IMFSample_Release(out_buffer.pSample); break; } timestamp = 0; if (FAILED(IMFSample_GetSampleTime(out_buffer.pSample, ×tamp))) WARN("Sample time wasn't set.\n"); source_reader_queue_response(reader, stream, S_OK /* FIXME */, 0, timestamp, out_buffer.pSample); if (out_buffer.pSample) IMFSample_Release(out_buffer.pSample); if (out_buffer.pEvents) IMFCollection_Release(out_buffer.pEvents); } return hr; } static HRESULT source_reader_process_sample(struct source_reader *reader, struct media_stream *stream, IMFSample *sample) { LONGLONG timestamp; HRESULT hr; if (!stream->decoder) { timestamp = 0; if (FAILED(IMFSample_GetSampleTime(sample, ×tamp))) WARN("Sample time wasn't set.\n"); source_reader_queue_response(reader, stream, S_OK, 0, timestamp, sample); return S_OK; } /* It's assumed that decoder has 1 input and 1 output, both id's are 0. */ hr = source_reader_pull_stream_samples(reader, stream); if (hr == MF_E_TRANSFORM_NEED_MORE_INPUT) { if (FAILED(hr = IMFTransform_ProcessInput(stream->decoder, 0, sample, 0))) { WARN("Transform failed to process input, hr %#x.\n", hr); return hr; } if ((hr = source_reader_pull_stream_samples(reader, stream)) == MF_E_TRANSFORM_NEED_MORE_INPUT) return S_OK; } else WARN("Transform failed to process output, hr %#x.\n", hr); return hr; } static HRESULT source_reader_media_sample_handler(struct source_reader *reader, IMFMediaStream *stream, IMFMediaEvent *event) { IMFSample *sample; unsigned int i; DWORD id = 0; HRESULT hr; TRACE("Got new sample for stream %p.\n", stream); if (FAILED(hr = media_event_get_object(event, &IID_IMFSample, (void **)&sample))) { WARN("Failed to get sample object, hr %#x.\n", hr); return hr; } if (FAILED(hr = media_stream_get_id(stream, &id))) { WARN("Unidentified stream %p, hr %#x.\n", stream, hr); IMFSample_Release(sample); return hr; } EnterCriticalSection(&reader->cs); for (i = 0; i < reader->stream_count; ++i) { if (id == reader->streams[i].id) { /* FIXME: propagate processing errors? */ reader->streams[i].flags &= ~STREAM_FLAG_SAMPLE_REQUESTED; hr = source_reader_process_sample(reader, &reader->streams[i], sample); if (reader->streams[i].requests) source_reader_request_sample(reader, &reader->streams[i]); break; } } if (i == reader->stream_count) WARN("Stream with id %#x was not present in presentation descriptor.\n", id); LeaveCriticalSection(&reader->cs); IMFSample_Release(sample); return hr; } static HRESULT source_reader_media_stream_state_handler(struct source_reader *reader, IMFMediaStream *stream, IMFMediaEvent *event) { MediaEventType event_type; LONGLONG timestamp; PROPVARIANT value; unsigned int i; HRESULT hr; DWORD id; IMFMediaEvent_GetType(event, &event_type); if (FAILED(hr = media_stream_get_id(stream, &id))) { WARN("Unidentified stream %p, hr %#x.\n", stream, hr); return hr; } EnterCriticalSection(&reader->cs); for (i = 0; i < reader->stream_count; ++i) { struct media_stream *stream = &reader->streams[i]; if (id == stream->id) { switch (event_type) { case MEEndOfStream: stream->state = STREAM_STATE_EOS; stream->flags &= ~STREAM_FLAG_SAMPLE_REQUESTED; if (stream->decoder && SUCCEEDED(IMFTransform_ProcessMessage(stream->decoder, MFT_MESSAGE_COMMAND_DRAIN, 0))) { if ((hr = source_reader_pull_stream_samples(reader, stream)) != MF_E_TRANSFORM_NEED_MORE_INPUT) WARN("Failed to pull pending samples, hr %#x.\n", hr); } while (stream->requests) source_reader_queue_response(reader, stream, S_OK, MF_SOURCE_READERF_ENDOFSTREAM, 0, NULL); break; case MEStreamSeeked: case MEStreamStarted: stream->state = STREAM_STATE_READY; break; case MEStreamTick: value.vt = VT_EMPTY; hr = SUCCEEDED(IMFMediaEvent_GetValue(event, &value)) && value.vt == VT_I8 ? S_OK : E_UNEXPECTED; timestamp = SUCCEEDED(hr) ? value.u.hVal.QuadPart : 0; PropVariantClear(&value); source_reader_queue_response(reader, stream, hr, MF_SOURCE_READERF_STREAMTICK, timestamp, NULL); break; default: ; } break; } } LeaveCriticalSection(&reader->cs); return S_OK; } static HRESULT WINAPI source_reader_stream_events_callback_Invoke(IMFAsyncCallback *iface, IMFAsyncResult *result) { struct source_reader *reader = impl_from_stream_callback_IMFAsyncCallback(iface); MediaEventType event_type; IMFMediaStream *stream; IMFMediaEvent *event; HRESULT hr; TRACE("%p, %p.\n", iface, result); stream = (IMFMediaStream *)IMFAsyncResult_GetStateNoAddRef(result); if (FAILED(hr = IMFMediaStream_EndGetEvent(stream, result, &event))) return hr; IMFMediaEvent_GetType(event, &event_type); TRACE("Got event %u.\n", event_type); switch (event_type) { case MEMediaSample: hr = source_reader_media_sample_handler(reader, stream, event); break; case MEStreamSeeked: case MEStreamStarted: case MEStreamTick: case MEEndOfStream: hr = source_reader_media_stream_state_handler(reader, stream, event); break; default: ; } if (FAILED(hr)) WARN("Failed while handling %d event, hr %#x.\n", event_type, hr); IMFMediaEvent_Release(event); IMFMediaStream_BeginGetEvent(stream, iface, (IUnknown *)stream); return S_OK; } static const IMFAsyncCallbackVtbl stream_events_callback_vtbl = { source_reader_callback_QueryInterface, source_reader_stream_events_callback_AddRef, source_reader_stream_events_callback_Release, source_reader_callback_GetParameters, source_reader_stream_events_callback_Invoke, }; static ULONG WINAPI source_reader_async_commands_callback_AddRef(IMFAsyncCallback *iface) { struct source_reader *reader = impl_from_async_commands_callback_IMFAsyncCallback(iface); return IMFSourceReader_AddRef(&reader->IMFSourceReader_iface); } static ULONG WINAPI source_reader_async_commands_callback_Release(IMFAsyncCallback *iface) { struct source_reader *reader = impl_from_async_commands_callback_IMFAsyncCallback(iface); return IMFSourceReader_Release(&reader->IMFSourceReader_iface); } static struct stream_response * media_stream_detach_response(struct source_reader *reader, struct stream_response *response) { struct media_stream *stream; list_remove(&response->entry); if (response->stream_index < reader->stream_count) { stream = &reader->streams[response->stream_index]; if (stream->responses) --stream->responses; } return response; } static struct stream_response *media_stream_pop_response(struct source_reader *reader, struct media_stream *stream) { struct stream_response *response; struct list *head; if (stream) { LIST_FOR_EACH_ENTRY(response, &reader->responses, struct stream_response, entry) { if (response->stream_index == stream->index) return media_stream_detach_response(reader, response); } } else { if ((head = list_head(&reader->responses))) return media_stream_detach_response(reader, LIST_ENTRY(head, struct stream_response, entry)); } return NULL; } static void source_reader_release_response(struct stream_response *response) { if (response->sample) IMFSample_Release(response->sample); heap_free(response); } static HRESULT source_reader_get_stream_selection(const struct source_reader *reader, DWORD index, BOOL *selected) { IMFStreamDescriptor *sd; if (FAILED(IMFPresentationDescriptor_GetStreamDescriptorByIndex(reader->descriptor, index, selected, &sd))) return MF_E_INVALIDSTREAMNUMBER; IMFStreamDescriptor_Release(sd); return S_OK; } static HRESULT source_reader_start_source(struct source_reader *reader) { BOOL selected, selection_changed = FALSE; PROPVARIANT position; HRESULT hr = S_OK; unsigned int i; for (i = 0; i < reader->stream_count; ++i) { source_reader_get_stream_selection(reader, i, &selected); if (selected) reader->streams[i].flags |= STREAM_FLAG_SELECTED; else reader->streams[i].flags &= ~STREAM_FLAG_SELECTED; } if (reader->source_state == SOURCE_STATE_STARTED) { for (i = 0; i < reader->stream_count; ++i) { selection_changed = !!(reader->streams[i].flags & STREAM_FLAG_SELECTED) ^ !!(reader->streams[i].flags & STREAM_FLAG_PRESENTED); if (selection_changed) break; } } position.u.hVal.QuadPart = 0; if (reader->source_state != SOURCE_STATE_STARTED || selection_changed) { position.vt = reader->source_state == SOURCE_STATE_STARTED ? VT_EMPTY : VT_I8; /* Update cached stream selection if descriptor was accepted. */ if (SUCCEEDED(hr = IMFMediaSource_Start(reader->source, reader->descriptor, &GUID_NULL, &position))) { for (i = 0; i < reader->stream_count; ++i) { if (reader->streams[i].flags & STREAM_FLAG_SELECTED) reader->streams[i].flags |= STREAM_FLAG_PRESENTED; } } } return hr; } static BOOL source_reader_got_response_for_stream(struct source_reader *reader, struct media_stream *stream) { struct stream_response *response; LIST_FOR_EACH_ENTRY(response, &reader->responses, struct stream_response, entry) { if (response->stream_index == stream->index) return TRUE; } return FALSE; } static BOOL source_reader_get_read_result(struct source_reader *reader, struct media_stream *stream, DWORD flags, HRESULT *status, DWORD *stream_index, DWORD *stream_flags, LONGLONG *timestamp, IMFSample **sample) { struct stream_response *response = NULL; BOOL request_sample = FALSE; if ((response = media_stream_pop_response(reader, stream))) { *status = response->status; *stream_index = stream->index; *stream_flags = response->stream_flags; *timestamp = response->timestamp; *sample = response->sample; if (*sample) IMFSample_AddRef(*sample); source_reader_release_response(response); } else { *status = S_OK; *stream_index = stream->index; *timestamp = 0; *sample = NULL; if (stream->state == STREAM_STATE_EOS) { *stream_flags = MF_SOURCE_READERF_ENDOFSTREAM; } else { request_sample = !(flags & MF_SOURCE_READER_CONTROLF_DRAIN); *stream_flags = 0; } } return !request_sample; } static HRESULT source_reader_get_next_selected_stream(struct source_reader *reader, unsigned int *stream_index) { unsigned int i, start_idx, stop_idx, first_selected = ~0u, requests = ~0u; BOOL selected, stream_drained; start_idx = (reader->last_read_index + 1) % reader->stream_count; stop_idx = reader->last_read_index == ~0u ? reader->stream_count : reader->last_read_index; for (i = start_idx; i < reader->stream_count && i != stop_idx; i = (i + 1) % (reader->stream_count + 1)) { stream_drained = reader->streams[i].state == STREAM_STATE_EOS && !reader->streams[i].responses; selected = SUCCEEDED(source_reader_get_stream_selection(reader, i, &selected)) && selected; if (selected) { if (first_selected == ~0u) first_selected = i; /* Try to balance pending reads. */ if (!stream_drained && reader->streams[i].requests < requests) { requests = reader->streams[i].requests; *stream_index = i; } } } /* If all selected streams reached EOS, use first selected. */ if (first_selected != ~0u) { if (requests == ~0u) *stream_index = first_selected; reader->last_read_index = *stream_index; } return first_selected == ~0u ? MF_E_MEDIA_SOURCE_NO_STREAMS_SELECTED : S_OK; } static HRESULT source_reader_get_stream_read_index(struct source_reader *reader, unsigned int index, unsigned int *stream_index) { BOOL selected; HRESULT hr; switch (index) { case MF_SOURCE_READER_FIRST_VIDEO_STREAM: *stream_index = reader->first_video_stream_index; break; case MF_SOURCE_READER_FIRST_AUDIO_STREAM: *stream_index = reader->first_audio_stream_index; break; case MF_SOURCE_READER_ANY_STREAM: return source_reader_get_next_selected_stream(reader, stream_index); default: *stream_index = index; } /* Can't read from deselected streams. */ if (SUCCEEDED(hr = source_reader_get_stream_selection(reader, *stream_index, &selected)) && !selected) hr = MF_E_INVALIDREQUEST; return hr; } static void source_reader_release_responses(struct source_reader *reader, struct media_stream *stream) { struct stream_response *ptr, *next; LIST_FOR_EACH_ENTRY_SAFE(ptr, next, &reader->responses, struct stream_response, entry) { if (stream && stream->index != ptr->stream_index && ptr->stream_index != MF_SOURCE_READER_FIRST_VIDEO_STREAM && ptr->stream_index != MF_SOURCE_READER_FIRST_AUDIO_STREAM && ptr->stream_index != MF_SOURCE_READER_ANY_STREAM) { continue; } media_stream_detach_response(reader, ptr); source_reader_release_response(ptr); } } static void source_reader_flush_stream(struct source_reader *reader, DWORD stream_index) { struct media_stream *stream = &reader->streams[stream_index]; source_reader_release_responses(reader, stream); if (stream->decoder) IMFTransform_ProcessMessage(stream->decoder, MFT_MESSAGE_COMMAND_FLUSH, 0); stream->requests = 0; } static HRESULT source_reader_flush(struct source_reader *reader, unsigned int index) { unsigned int stream_index; HRESULT hr = S_OK; if (index == MF_SOURCE_READER_ALL_STREAMS) { for (stream_index = 0; stream_index < reader->stream_count; ++stream_index) source_reader_flush_stream(reader, stream_index); } else { switch (index) { case MF_SOURCE_READER_FIRST_VIDEO_STREAM: stream_index = reader->first_video_stream_index; break; case MF_SOURCE_READER_FIRST_AUDIO_STREAM: stream_index = reader->first_audio_stream_index; break; default: stream_index = index; } if (stream_index < reader->stream_count) source_reader_flush_stream(reader, stream_index); else hr = MF_E_INVALIDSTREAMNUMBER; } return hr; } static HRESULT WINAPI source_reader_async_commands_callback_Invoke(IMFAsyncCallback *iface, IMFAsyncResult *result) { struct source_reader *reader = impl_from_async_commands_callback_IMFAsyncCallback(iface); struct media_stream *stream, stub_stream = { .requests = 1 }; struct source_reader_async_command *command; struct stream_response *response; DWORD stream_index, stream_flags; BOOL report_sample = FALSE; IMFSample *sample = NULL; LONGLONG timestamp = 0; HRESULT hr, status; IUnknown *state; if (FAILED(hr = IMFAsyncResult_GetState(result, &state))) return hr; command = impl_from_async_command_IUnknown(state); switch (command->op) { case SOURCE_READER_ASYNC_READ: EnterCriticalSection(&reader->cs); if (SUCCEEDED(hr = source_reader_start_source(reader))) { if (SUCCEEDED(hr = source_reader_get_stream_read_index(reader, command->u.read.stream_index, &stream_index))) { stream = &reader->streams[stream_index]; if (!(report_sample = source_reader_get_read_result(reader, stream, command->u.read.flags, &status, &stream_index, &stream_flags, ×tamp, &sample))) { stream->requests++; source_reader_request_sample(reader, stream); /* FIXME: set error stream/reader state on request failure */ } } else { stub_stream.index = command->u.read.stream_index; source_reader_queue_response(reader, &stub_stream, hr, MF_SOURCE_READERF_ERROR, 0, NULL); } } LeaveCriticalSection(&reader->cs); if (report_sample) IMFSourceReaderCallback_OnReadSample(reader->async_callback, status, stream_index, stream_flags, timestamp, sample); if (sample) IMFSample_Release(sample); break; case SOURCE_READER_ASYNC_SEEK: EnterCriticalSection(&reader->cs); if (SUCCEEDED(IMFMediaSource_Start(reader->source, reader->descriptor, &command->u.seek.format, &command->u.seek.position))) { reader->flags |= SOURCE_READER_SEEKING; } LeaveCriticalSection(&reader->cs); break; case SOURCE_READER_ASYNC_SAMPLE_READY: EnterCriticalSection(&reader->cs); response = media_stream_pop_response(reader, NULL); LeaveCriticalSection(&reader->cs); if (response) { IMFSourceReaderCallback_OnReadSample(reader->async_callback, response->status, response->stream_index, response->stream_flags, response->timestamp, response->sample); source_reader_release_response(response); } break; case SOURCE_READER_ASYNC_FLUSH: EnterCriticalSection(&reader->cs); source_reader_flush(reader, command->u.flush.stream_index); reader->flags &= ~SOURCE_READER_FLUSHING; LeaveCriticalSection(&reader->cs); IMFSourceReaderCallback_OnFlush(reader->async_callback, command->u.flush.stream_index); break; default: ; } IUnknown_Release(state); return S_OK; } static const IMFAsyncCallbackVtbl async_commands_callback_vtbl = { source_reader_callback_QueryInterface, source_reader_async_commands_callback_AddRef, source_reader_async_commands_callback_Release, source_reader_callback_GetParameters, source_reader_async_commands_callback_Invoke, }; static HRESULT WINAPI src_reader_QueryInterface(IMFSourceReader *iface, REFIID riid, void **out) { struct source_reader *reader = impl_from_IMFSourceReader(iface); TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), out); if(IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_IMFSourceReader)) { *out = &reader->IMFSourceReader_iface; } else { FIXME("(%s, %p)\n", debugstr_guid(riid), out); *out = NULL; return E_NOINTERFACE; } IUnknown_AddRef((IUnknown*)*out); return S_OK; } static ULONG WINAPI src_reader_AddRef(IMFSourceReader *iface) { struct source_reader *reader = impl_from_IMFSourceReader(iface); ULONG refcount = InterlockedIncrement(&reader->refcount); TRACE("%p, refcount %u.\n", iface, refcount); return refcount; } static ULONG WINAPI src_reader_Release(IMFSourceReader *iface) { struct source_reader *reader = impl_from_IMFSourceReader(iface); ULONG refcount = InterlockedDecrement(&reader->refcount); unsigned int i; TRACE("%p, refcount %u.\n", iface, refcount); if (!refcount) { if (reader->async_callback) IMFSourceReaderCallback_Release(reader->async_callback); if (reader->flags & SOURCE_READER_SHUTDOWN_ON_RELEASE) IMFMediaSource_Shutdown(reader->source); if (reader->descriptor) IMFPresentationDescriptor_Release(reader->descriptor); IMFMediaSource_Release(reader->source); for (i = 0; i < reader->stream_count; ++i) { struct media_stream *stream = &reader->streams[i]; if (stream->stream) IMFMediaStream_Release(stream->stream); if (stream->current) IMFMediaType_Release(stream->current); if (stream->decoder) IMFTransform_Release(stream->decoder); } source_reader_release_responses(reader, NULL); heap_free(reader->streams); DeleteCriticalSection(&reader->cs); heap_free(reader); } return refcount; } static HRESULT WINAPI src_reader_GetStreamSelection(IMFSourceReader *iface, DWORD index, BOOL *selected) { struct source_reader *reader = impl_from_IMFSourceReader(iface); TRACE("%p, %#x, %p.\n", iface, index, selected); switch (index) { case MF_SOURCE_READER_FIRST_VIDEO_STREAM: index = reader->first_video_stream_index; break; case MF_SOURCE_READER_FIRST_AUDIO_STREAM: index = reader->first_audio_stream_index; break; default: ; } return source_reader_get_stream_selection(reader, index, selected); } static HRESULT WINAPI src_reader_SetStreamSelection(IMFSourceReader *iface, DWORD index, BOOL selection) { struct source_reader *reader = impl_from_IMFSourceReader(iface); HRESULT hr = S_OK; BOOL selection_changed = FALSE, selected; unsigned int i; TRACE("%p, %#x, %d.\n", iface, index, selection); selection = !!selection; EnterCriticalSection(&reader->cs); if (index == MF_SOURCE_READER_ALL_STREAMS) { for (i = 0; i < reader->stream_count; ++i) { if (!selection_changed) { source_reader_get_stream_selection(reader, i, &selected); selection_changed = !!(selected ^ selection); } if (selection) IMFPresentationDescriptor_SelectStream(reader->descriptor, i); else IMFPresentationDescriptor_DeselectStream(reader->descriptor, i); } } else { switch (index) { case MF_SOURCE_READER_FIRST_VIDEO_STREAM: index = reader->first_video_stream_index; break; case MF_SOURCE_READER_FIRST_AUDIO_STREAM: index = reader->first_audio_stream_index; break; default: ; } source_reader_get_stream_selection(reader, index, &selected); selection_changed = !!(selected ^ selection); if (selection) hr = IMFPresentationDescriptor_SelectStream(reader->descriptor, index); else hr = IMFPresentationDescriptor_DeselectStream(reader->descriptor, index); } if (selection_changed) reader->last_read_index = ~0u; LeaveCriticalSection(&reader->cs); return SUCCEEDED(hr) ? S_OK : MF_E_INVALIDSTREAMNUMBER; } static HRESULT source_reader_get_native_media_type(struct source_reader *reader, DWORD index, DWORD type_index, IMFMediaType **type) { IMFMediaTypeHandler *handler; IMFStreamDescriptor *sd; IMFMediaType *src_type; BOOL selected; HRESULT hr; switch (index) { case MF_SOURCE_READER_FIRST_VIDEO_STREAM: index = reader->first_video_stream_index; break; case MF_SOURCE_READER_FIRST_AUDIO_STREAM: index = reader->first_audio_stream_index; break; default: ; } if (FAILED(IMFPresentationDescriptor_GetStreamDescriptorByIndex(reader->descriptor, index, &selected, &sd))) return MF_E_INVALIDSTREAMNUMBER; hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, &handler); IMFStreamDescriptor_Release(sd); if (FAILED(hr)) return hr; if (type_index == MF_SOURCE_READER_CURRENT_TYPE_INDEX) hr = IMFMediaTypeHandler_GetCurrentMediaType(handler, &src_type); else hr = IMFMediaTypeHandler_GetMediaTypeByIndex(handler, type_index, &src_type); IMFMediaTypeHandler_Release(handler); if (SUCCEEDED(hr)) { if (SUCCEEDED(hr = MFCreateMediaType(type))) hr = IMFMediaType_CopyAllItems(src_type, (IMFAttributes *)*type); IMFMediaType_Release(src_type); } return hr; } static HRESULT WINAPI src_reader_GetNativeMediaType(IMFSourceReader *iface, DWORD index, DWORD type_index, IMFMediaType **type) { struct source_reader *reader = impl_from_IMFSourceReader(iface); TRACE("%p, %#x, %#x, %p.\n", iface, index, type_index, type); return source_reader_get_native_media_type(reader, index, type_index, type); } static HRESULT WINAPI src_reader_GetCurrentMediaType(IMFSourceReader *iface, DWORD index, IMFMediaType **type) { struct source_reader *reader = impl_from_IMFSourceReader(iface); HRESULT hr; TRACE("%p, %#x, %p.\n", iface, index, type); switch (index) { case MF_SOURCE_READER_FIRST_VIDEO_STREAM: index = reader->first_video_stream_index; break; case MF_SOURCE_READER_FIRST_AUDIO_STREAM: index = reader->first_audio_stream_index; break; default: ; } if (index >= reader->stream_count) return MF_E_INVALIDSTREAMNUMBER; if (FAILED(hr = MFCreateMediaType(type))) return hr; EnterCriticalSection(&reader->cs); hr = IMFMediaType_CopyAllItems(reader->streams[index].current, (IMFAttributes *)*type); LeaveCriticalSection(&reader->cs); return hr; } static HRESULT source_reader_get_source_type_handler(struct source_reader *reader, DWORD index, IMFMediaTypeHandler **handler) { IMFStreamDescriptor *sd; BOOL selected; HRESULT hr; if (FAILED(hr = IMFPresentationDescriptor_GetStreamDescriptorByIndex(reader->descriptor, index, &selected, &sd))) return hr; hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, handler); IMFStreamDescriptor_Release(sd); return hr; } static HRESULT source_reader_set_compatible_media_type(struct source_reader *reader, DWORD index, IMFMediaType *type) { IMFMediaTypeHandler *type_handler; IMFMediaType *native_type; BOOL type_set = FALSE; unsigned int i = 0; DWORD flags; HRESULT hr; if (FAILED(hr = IMFMediaType_IsEqual(type, reader->streams[index].current, &flags))) return hr; if (!(flags & MF_MEDIATYPE_EQUAL_MAJOR_TYPES)) return MF_E_INVALIDMEDIATYPE; /* No need for a decoder or type change. */ if (flags & MF_MEDIATYPE_EQUAL_FORMAT_TYPES) return S_OK; if (FAILED(hr = source_reader_get_source_type_handler(reader, index, &type_handler))) return hr; while (!type_set && IMFMediaTypeHandler_GetMediaTypeByIndex(type_handler, i++, &native_type) == S_OK) { static const DWORD compare_flags = MF_MEDIATYPE_EQUAL_MAJOR_TYPES | MF_MEDIATYPE_EQUAL_FORMAT_TYPES; if (SUCCEEDED(IMFMediaType_IsEqual(native_type, type, &flags)) && (flags & compare_flags) == compare_flags) { if ((type_set = SUCCEEDED(IMFMediaTypeHandler_SetCurrentMediaType(type_handler, native_type)))) IMFMediaType_CopyAllItems(native_type, (IMFAttributes *)reader->streams[index].current); } IMFMediaType_Release(native_type); } IMFMediaTypeHandler_Release(type_handler); return type_set ? S_OK : S_FALSE; } static HRESULT source_reader_configure_decoder(struct source_reader *reader, DWORD index, const CLSID *clsid, IMFMediaType *input_type, IMFMediaType *output_type) { IMFMediaTypeHandler *type_handler; IMFTransform *transform = NULL; IMFMediaType *type = NULL; DWORD flags; HRESULT hr; int i = 0; if (FAILED(hr = CoCreateInstance(clsid, NULL, CLSCTX_INPROC_SERVER, &IID_IMFTransform, (void **)&transform))) { WARN("Failed to create transform object, hr %#x.\n", hr); return hr; } if (FAILED(hr = IMFTransform_SetInputType(transform, 0, input_type, 0))) { WARN("Failed to set decoder input type, hr %#x.\n", hr); IMFTransform_Release(transform); return hr; } /* Find the relevant output type. */ while (IMFTransform_GetOutputAvailableType(transform, 0, i++, &type) == S_OK) { flags = 0; if (SUCCEEDED(IMFMediaType_IsEqual(type, output_type, &flags))) { if (flags & MF_MEDIATYPE_EQUAL_FORMAT_TYPES) { if (SUCCEEDED(IMFTransform_SetOutputType(transform, 0, type, 0))) { if (SUCCEEDED(source_reader_get_source_type_handler(reader, index, &type_handler))) { IMFMediaTypeHandler_SetCurrentMediaType(type_handler, input_type); IMFMediaTypeHandler_Release(type_handler); } if (FAILED(hr = IMFMediaType_CopyAllItems(type, (IMFAttributes *)reader->streams[index].current))) WARN("Failed to copy attributes, hr %#x.\n", hr); IMFMediaType_Release(type); if (reader->streams[index].decoder) IMFTransform_Release(reader->streams[index].decoder); reader->streams[index].decoder = transform; return S_OK; } } } IMFMediaType_Release(type); } WARN("Failed to find suitable decoder output type.\n"); IMFTransform_Release(transform); return MF_E_TOPO_CODEC_NOT_FOUND; } static HRESULT source_reader_create_decoder_for_stream(struct source_reader *reader, DWORD index, IMFMediaType *output_type) { MFT_REGISTER_TYPE_INFO in_type, out_type; CLSID *clsids, mft_clsid, category; unsigned int i = 0, count; IMFMediaType *input_type; HRESULT hr; /* TODO: should we check if the source type is compressed? */ if (FAILED(hr = IMFMediaType_GetMajorType(output_type, &out_type.guidMajorType))) return hr; if (IsEqualGUID(&out_type.guidMajorType, &MFMediaType_Video)) { category = MFT_CATEGORY_VIDEO_DECODER; } else if (IsEqualGUID(&out_type.guidMajorType, &MFMediaType_Audio)) { category = MFT_CATEGORY_AUDIO_DECODER; } else { WARN("Unhandled major type %s.\n", debugstr_guid(&out_type.guidMajorType)); return MF_E_TOPO_CODEC_NOT_FOUND; } if (FAILED(hr = IMFMediaType_GetGUID(output_type, &MF_MT_SUBTYPE, &out_type.guidSubtype))) return hr; in_type.guidMajorType = out_type.guidMajorType; while (source_reader_get_native_media_type(reader, index, i++, &input_type) == S_OK) { if (SUCCEEDED(IMFMediaType_GetGUID(input_type, &MF_MT_SUBTYPE, &in_type.guidSubtype))) { count = 0; if (SUCCEEDED(hr = MFTEnum(category, 0, &in_type, &out_type, NULL, &clsids, &count)) && count) { mft_clsid = clsids[0]; CoTaskMemFree(clsids); /* TODO: Should we iterate over all of them? */ if (SUCCEEDED(source_reader_configure_decoder(reader, index, &mft_clsid, input_type, output_type))) { IMFMediaType_Release(input_type); return S_OK; } } } IMFMediaType_Release(input_type); } return MF_E_TOPO_CODEC_NOT_FOUND; } static HRESULT WINAPI src_reader_SetCurrentMediaType(IMFSourceReader *iface, DWORD index, DWORD *reserved, IMFMediaType *type) { struct source_reader *reader = impl_from_IMFSourceReader(iface); HRESULT hr; TRACE("%p, %#x, %p, %p.\n", iface, index, reserved, type); switch (index) { case MF_SOURCE_READER_FIRST_VIDEO_STREAM: index = reader->first_video_stream_index; break; case MF_SOURCE_READER_FIRST_AUDIO_STREAM: index = reader->first_audio_stream_index; break; default: ; } if (index >= reader->stream_count) return MF_E_INVALIDSTREAMNUMBER; /* FIXME: setting the output type while streaming should trigger a flush */ EnterCriticalSection(&reader->cs); if ((hr = source_reader_set_compatible_media_type(reader, index, type)) == S_FALSE) hr = source_reader_create_decoder_for_stream(reader, index, type); LeaveCriticalSection(&reader->cs); return hr; } static HRESULT WINAPI src_reader_SetCurrentPosition(IMFSourceReader *iface, REFGUID format, REFPROPVARIANT position) { struct source_reader *reader = impl_from_IMFSourceReader(iface); struct source_reader_async_command *command; unsigned int i, flags; HRESULT hr; TRACE("%p, %s, %p.\n", iface, debugstr_guid(format), position); if (FAILED(hr = IMFMediaSource_GetCharacteristics(reader->source, &flags))) return hr; if (!(flags & MFMEDIASOURCE_CAN_SEEK)) return MF_E_INVALIDREQUEST; EnterCriticalSection(&reader->cs); /* Check if we got pending requests. */ for (i = 0; i < reader->stream_count; ++i) { if (reader->streams[i].requests) { hr = MF_E_INVALIDREQUEST; break; } } if (SUCCEEDED(hr)) { if (reader->async_callback) { if (SUCCEEDED(hr = source_reader_create_async_op(SOURCE_READER_ASYNC_SEEK, &command))) { command->u.seek.format = *format; PropVariantCopy(&command->u.seek.position, position); hr = MFPutWorkItem(MFASYNC_CALLBACK_QUEUE_MULTITHREADED, &reader->async_commands_callback, &command->IUnknown_iface); IUnknown_Release(&command->IUnknown_iface); } } else { if (SUCCEEDED(IMFMediaSource_Start(reader->source, reader->descriptor, format, position))) { reader->flags |= SOURCE_READER_SEEKING; while (reader->flags & SOURCE_READER_SEEKING) { SleepConditionVariableCS(&reader->state_event, &reader->cs, INFINITE); } } } } LeaveCriticalSection(&reader->cs); return hr; } static HRESULT source_reader_read_sample(struct source_reader *reader, DWORD index, DWORD flags, DWORD *actual_index, DWORD *stream_flags, LONGLONG *timestamp, IMFSample **sample) { unsigned int actual_index_tmp; struct media_stream *stream; LONGLONG timestamp_tmp; DWORD stream_index; HRESULT hr = S_OK; if (!stream_flags || !sample) return E_POINTER; *sample = NULL; if (!timestamp) timestamp = ×tamp_tmp; if (!actual_index) actual_index = &actual_index_tmp; if (SUCCEEDED(hr = source_reader_start_source(reader))) { if (SUCCEEDED(hr = source_reader_get_stream_read_index(reader, index, &stream_index))) { *actual_index = stream_index; stream = &reader->streams[stream_index]; if (!source_reader_get_read_result(reader, stream, flags, &hr, actual_index, stream_flags, timestamp, sample)) { while (!source_reader_got_response_for_stream(reader, stream) && stream->state != STREAM_STATE_EOS) { stream->requests++; if (FAILED(hr = source_reader_request_sample(reader, stream))) WARN("Failed to request a sample, hr %#x.\n", hr); if (stream->stream && !(stream->flags & STREAM_FLAG_SAMPLE_REQUESTED)) { *stream_flags = MF_SOURCE_READERF_ERROR; *timestamp = 0; break; } SleepConditionVariableCS(&reader->sample_event, &reader->cs, INFINITE); } if (SUCCEEDED(hr)) source_reader_get_read_result(reader, stream, flags, &hr, actual_index, stream_flags, timestamp, sample); } } else { *actual_index = index; *stream_flags = MF_SOURCE_READERF_ERROR; *timestamp = 0; } } TRACE("Stream %u, got sample %p, flags %#x.\n", *actual_index, *sample, *stream_flags); return hr; } static HRESULT source_reader_read_sample_async(struct source_reader *reader, unsigned int index, unsigned int flags, unsigned int *actual_index, unsigned int *stream_flags, LONGLONG *timestamp, IMFSample **sample) { struct source_reader_async_command *command; HRESULT hr; if (actual_index || stream_flags || timestamp || sample) return E_INVALIDARG; if (reader->flags & SOURCE_READER_FLUSHING) hr = MF_E_NOTACCEPTING; else { if (SUCCEEDED(hr = source_reader_create_async_op(SOURCE_READER_ASYNC_READ, &command))) { command->u.read.stream_index = index; command->u.read.flags = flags; hr = MFPutWorkItem(MFASYNC_CALLBACK_QUEUE_STANDARD, &reader->async_commands_callback, &command->IUnknown_iface); IUnknown_Release(&command->IUnknown_iface); } } return hr; } static HRESULT WINAPI src_reader_ReadSample(IMFSourceReader *iface, DWORD index, DWORD flags, DWORD *actual_index, DWORD *stream_flags, LONGLONG *timestamp, IMFSample **sample) { struct source_reader *reader = impl_from_IMFSourceReader(iface); HRESULT hr; TRACE("%p, %#x, %#x, %p, %p, %p, %p\n", iface, index, flags, actual_index, stream_flags, timestamp, sample); EnterCriticalSection(&reader->cs); while (reader->flags & SOURCE_READER_SEEKING) { SleepConditionVariableCS(&reader->state_event, &reader->cs, INFINITE); } if (reader->async_callback) hr = source_reader_read_sample_async(reader, index, flags, actual_index, stream_flags, timestamp, sample); else hr = source_reader_read_sample(reader, index, flags, actual_index, stream_flags, timestamp, sample); LeaveCriticalSection(&reader->cs); return hr; } static HRESULT source_reader_flush_async(struct source_reader *reader, unsigned int index) { struct source_reader_async_command *command; unsigned int stream_index; HRESULT hr; if (reader->flags & SOURCE_READER_FLUSHING) return MF_E_INVALIDREQUEST; switch (index) { case MF_SOURCE_READER_FIRST_VIDEO_STREAM: stream_index = reader->first_video_stream_index; break; case MF_SOURCE_READER_FIRST_AUDIO_STREAM: stream_index = reader->first_audio_stream_index; break; default: stream_index = index; } reader->flags |= SOURCE_READER_FLUSHING; if (stream_index != MF_SOURCE_READER_ALL_STREAMS && stream_index >= reader->stream_count) return MF_E_INVALIDSTREAMNUMBER; if (FAILED(hr = source_reader_create_async_op(SOURCE_READER_ASYNC_FLUSH, &command))) return hr; command->u.flush.stream_index = stream_index; hr = MFPutWorkItem(MFASYNC_CALLBACK_QUEUE_STANDARD, &reader->async_commands_callback, &command->IUnknown_iface); IUnknown_Release(&command->IUnknown_iface); return hr; } static HRESULT WINAPI src_reader_Flush(IMFSourceReader *iface, DWORD index) { struct source_reader *reader = impl_from_IMFSourceReader(iface); HRESULT hr; TRACE("%p, %#x.\n", iface, index); EnterCriticalSection(&reader->cs); if (reader->async_callback) hr = source_reader_flush_async(reader, index); else hr = source_reader_flush(reader, index); LeaveCriticalSection(&reader->cs); return hr; } static HRESULT WINAPI src_reader_GetServiceForStream(IMFSourceReader *iface, DWORD index, REFGUID service, REFIID riid, void **object) { struct source_reader *reader = impl_from_IMFSourceReader(iface); IUnknown *obj = NULL; HRESULT hr = S_OK; TRACE("%p, %#x, %s, %s, %p\n", iface, index, debugstr_guid(service), debugstr_guid(riid), object); EnterCriticalSection(&reader->cs); switch (index) { case MF_SOURCE_READER_MEDIASOURCE: obj = (IUnknown *)reader->source; break; default: if (index == MF_SOURCE_READER_FIRST_VIDEO_STREAM) index = reader->first_video_stream_index; else if (index == MF_SOURCE_READER_FIRST_AUDIO_STREAM) index = reader->first_audio_stream_index; if (index >= reader->stream_count) hr = MF_E_INVALIDSTREAMNUMBER; else { obj = (IUnknown *)reader->streams[index].decoder; if (!obj) hr = E_NOINTERFACE; } break; } if (obj) IUnknown_AddRef(obj); LeaveCriticalSection(&reader->cs); if (obj) { if (IsEqualGUID(service, &GUID_NULL)) { hr = IUnknown_QueryInterface(obj, riid, object); } else { IMFGetService *gs; hr = IUnknown_QueryInterface(obj, &IID_IMFGetService, (void **)&gs); if (SUCCEEDED(hr)) { hr = IMFGetService_GetService(gs, service, riid, object); IMFGetService_Release(gs); } } } if (obj) IUnknown_Release(obj); return hr; } static HRESULT WINAPI src_reader_GetPresentationAttribute(IMFSourceReader *iface, DWORD index, REFGUID guid, PROPVARIANT *value) { struct source_reader *reader = impl_from_IMFSourceReader(iface); IMFStreamDescriptor *sd; BOOL selected; HRESULT hr; TRACE("%p, %#x, %s, %p.\n", iface, index, debugstr_guid(guid), value); switch (index) { case MF_SOURCE_READER_MEDIASOURCE: if (IsEqualGUID(guid, &MF_SOURCE_READER_MEDIASOURCE_CHARACTERISTICS)) { DWORD flags; if (FAILED(hr = IMFMediaSource_GetCharacteristics(reader->source, &flags))) return hr; value->vt = VT_UI4; value->u.ulVal = flags; return S_OK; } else { return IMFPresentationDescriptor_GetItem(reader->descriptor, guid, value); } break; case MF_SOURCE_READER_FIRST_VIDEO_STREAM: index = reader->first_video_stream_index; break; case MF_SOURCE_READER_FIRST_AUDIO_STREAM: index = reader->first_audio_stream_index; break; default: ; } if (FAILED(hr = IMFPresentationDescriptor_GetStreamDescriptorByIndex(reader->descriptor, index, &selected, &sd))) return hr; hr = IMFStreamDescriptor_GetItem(sd, guid, value); IMFStreamDescriptor_Release(sd); return hr; } struct IMFSourceReaderVtbl srcreader_vtbl = { src_reader_QueryInterface, src_reader_AddRef, src_reader_Release, src_reader_GetStreamSelection, src_reader_SetStreamSelection, src_reader_GetNativeMediaType, src_reader_GetCurrentMediaType, src_reader_SetCurrentMediaType, src_reader_SetCurrentPosition, src_reader_ReadSample, src_reader_Flush, src_reader_GetServiceForStream, src_reader_GetPresentationAttribute }; static DWORD reader_get_first_stream_index(IMFPresentationDescriptor *descriptor, const GUID *major) { unsigned int count, i; BOOL selected; HRESULT hr; GUID guid; if (FAILED(IMFPresentationDescriptor_GetStreamDescriptorCount(descriptor, &count))) return MF_SOURCE_READER_INVALID_STREAM_INDEX; for (i = 0; i < count; ++i) { IMFMediaTypeHandler *handler; IMFStreamDescriptor *sd; if (SUCCEEDED(IMFPresentationDescriptor_GetStreamDescriptorByIndex(descriptor, i, &selected, &sd))) { hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, &handler); IMFStreamDescriptor_Release(sd); if (SUCCEEDED(hr)) { hr = IMFMediaTypeHandler_GetMajorType(handler, &guid); IMFMediaTypeHandler_Release(handler); if (FAILED(hr)) { WARN("Failed to get stream major type, hr %#x.\n", hr); continue; } if (IsEqualGUID(&guid, major)) { return i; } } } } return MF_SOURCE_READER_INVALID_STREAM_INDEX; } static HRESULT create_source_reader_from_source(IMFMediaSource *source, IMFAttributes *attributes, BOOL shutdown_on_release, REFIID riid, void **out) { struct source_reader *object; unsigned int i; HRESULT hr; object = heap_alloc_zero(sizeof(*object)); if (!object) return E_OUTOFMEMORY; object->IMFSourceReader_iface.lpVtbl = &srcreader_vtbl; object->source_events_callback.lpVtbl = &source_events_callback_vtbl; object->stream_events_callback.lpVtbl = &stream_events_callback_vtbl; object->async_commands_callback.lpVtbl = &async_commands_callback_vtbl; object->refcount = 1; list_init(&object->responses); if (shutdown_on_release) object->flags |= SOURCE_READER_SHUTDOWN_ON_RELEASE; object->source = source; IMFMediaSource_AddRef(object->source); InitializeCriticalSection(&object->cs); InitializeConditionVariable(&object->sample_event); InitializeConditionVariable(&object->state_event); if (FAILED(hr = IMFMediaSource_CreatePresentationDescriptor(object->source, &object->descriptor))) goto failed; if (FAILED(hr = IMFPresentationDescriptor_GetStreamDescriptorCount(object->descriptor, &object->stream_count))) goto failed; if (!(object->streams = heap_alloc_zero(object->stream_count * sizeof(*object->streams)))) { hr = E_OUTOFMEMORY; goto failed; } /* Set initial current media types. */ for (i = 0; i < object->stream_count; ++i) { IMFMediaTypeHandler *handler; IMFStreamDescriptor *sd; IMFMediaType *src_type; BOOL selected; if (FAILED(hr = MFCreateMediaType(&object->streams[i].current))) break; if (FAILED(hr = IMFPresentationDescriptor_GetStreamDescriptorByIndex(object->descriptor, i, &selected, &sd))) break; if (FAILED(hr = IMFStreamDescriptor_GetStreamIdentifier(sd, &object->streams[i].id))) WARN("Failed to get stream identifier, hr %#x.\n", hr); hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, &handler); IMFStreamDescriptor_Release(sd); if (FAILED(hr)) break; hr = IMFMediaTypeHandler_GetMediaTypeByIndex(handler, 0, &src_type); IMFMediaTypeHandler_Release(handler); if (FAILED(hr)) break; hr = IMFMediaType_CopyAllItems(src_type, (IMFAttributes *)object->streams[i].current); IMFMediaType_Release(src_type); if (FAILED(hr)) break; object->streams[i].index = i; } if (FAILED(hr)) goto failed; /* At least one major type has to be set. */ object->first_audio_stream_index = reader_get_first_stream_index(object->descriptor, &MFMediaType_Audio); object->first_video_stream_index = reader_get_first_stream_index(object->descriptor, &MFMediaType_Video); object->last_read_index = ~0u; if (object->first_audio_stream_index == MF_SOURCE_READER_INVALID_STREAM_INDEX && object->first_video_stream_index == MF_SOURCE_READER_INVALID_STREAM_INDEX) { hr = MF_E_ATTRIBUTENOTFOUND; } if (FAILED(hr = IMFMediaSource_BeginGetEvent(object->source, &object->source_events_callback, (IUnknown *)object->source))) { goto failed; } if (attributes) { IMFAttributes_GetUnknown(attributes, &MF_SOURCE_READER_ASYNC_CALLBACK, &IID_IMFSourceReaderCallback, (void **)&object->async_callback); if (object->async_callback) TRACE("Using async callback %p.\n", object->async_callback); } hr = IMFSourceReader_QueryInterface(&object->IMFSourceReader_iface, riid, out); failed: IMFSourceReader_Release(&object->IMFSourceReader_iface); return hr; } static HRESULT bytestream_get_url_hint(IMFByteStream *stream, WCHAR const **url) { static const unsigned char asfmagic[] = {0x30,0x26,0xb2,0x75,0x8e,0x66,0xcf,0x11,0xa6,0xd9,0x00,0xaa,0x00,0x62,0xce,0x6c}; static const unsigned char wavmagic[] = { 'R', 'I', 'F', 'F',0x00,0x00,0x00,0x00, 'W', 'A', 'V', 'E', 'f', 'm', 't', ' '}; static const unsigned char wavmask[] = {0xff,0xff,0xff,0xff,0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff}; static const unsigned char isommagic[] = {0x00,0x00,0x00,0x00, 'f', 't', 'y', 'p', 'i', 's', 'o', 'm',0x00,0x00,0x00,0x00}; static const unsigned char mp42magic[] = {0x00,0x00,0x00,0x00, 'f', 't', 'y', 'p', 'm', 'p', '4', '2',0x00,0x00,0x00,0x00}; static const unsigned char mp4mask[] = {0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x00,0x00,0x00,0x00}; static const struct stream_content_url_hint { const unsigned char *magic; const WCHAR *url; const unsigned char *mask; } url_hints[] = { { asfmagic, L".asf" }, { wavmagic, L".wav", wavmask }, { isommagic, L".mp4", mp4mask }, { mp42magic, L".mp4", mp4mask }, }; unsigned char buffer[4 * sizeof(unsigned int)], pattern[4 * sizeof(unsigned int)]; unsigned int i, j, length = 0, caps = 0; IMFAttributes *attributes; QWORD position; HRESULT hr; *url = NULL; if (SUCCEEDED(IMFByteStream_QueryInterface(stream, &IID_IMFAttributes, (void **)&attributes))) { IMFAttributes_GetStringLength(attributes, &MF_BYTESTREAM_CONTENT_TYPE, &length); IMFAttributes_Release(attributes); } if (length) return S_OK; if (FAILED(hr = IMFByteStream_GetCapabilities(stream, &caps))) return hr; if (!(caps & MFBYTESTREAM_IS_SEEKABLE)) return S_OK; if (FAILED(hr = IMFByteStream_GetCurrentPosition(stream, &position))) return hr; hr = IMFByteStream_Read(stream, buffer, sizeof(buffer), &length); IMFByteStream_SetCurrentPosition(stream, position); if (FAILED(hr)) return hr; if (length < sizeof(buffer)) return S_OK; for (i = 0; i < ARRAY_SIZE(url_hints); ++i) { memcpy(pattern, buffer, sizeof(buffer)); if (url_hints[i].mask) { unsigned int *mask = (unsigned int *)url_hints[i].mask; unsigned int *data = (unsigned int *)pattern; for (j = 0; j < sizeof(buffer) / sizeof(unsigned int); ++j) data[j] &= mask[j]; } if (!memcmp(pattern, url_hints[i].magic, sizeof(pattern))) { *url = url_hints[i].url; break; } } if (*url) TRACE("Stream type guessed as %s from %s.\n", debugstr_w(*url), debugstr_an((char *)buffer, length)); else WARN("Unrecognized content type %s.\n", debugstr_an((char *)buffer, length)); return S_OK; } static HRESULT create_source_reader_from_stream(IMFByteStream *stream, IMFAttributes *attributes, REFIID riid, void **out) { IPropertyStore *props = NULL; IMFSourceResolver *resolver; MF_OBJECT_TYPE obj_type; IMFMediaSource *source; const WCHAR *url; HRESULT hr; /* If stream does not have content type set, try to guess from starting byte sequence. */ if (FAILED(hr = bytestream_get_url_hint(stream, &url))) return hr; if (FAILED(hr = MFCreateSourceResolver(&resolver))) return hr; if (attributes) IMFAttributes_GetUnknown(attributes, &MF_SOURCE_READER_MEDIASOURCE_CONFIG, &IID_IPropertyStore, (void **)&props); hr = IMFSourceResolver_CreateObjectFromByteStream(resolver, stream, url, MF_RESOLUTION_MEDIASOURCE, props, &obj_type, (IUnknown **)&source); IMFSourceResolver_Release(resolver); if (props) IPropertyStore_Release(props); if (FAILED(hr)) return hr; hr = create_source_reader_from_source(source, attributes, TRUE, riid, out); IMFMediaSource_Release(source); return hr; } static HRESULT create_source_reader_from_url(const WCHAR *url, IMFAttributes *attributes, REFIID riid, void **out) { IPropertyStore *props = NULL; IMFSourceResolver *resolver; IUnknown *object = NULL; MF_OBJECT_TYPE obj_type; IMFMediaSource *source; HRESULT hr; if (FAILED(hr = MFCreateSourceResolver(&resolver))) return hr; if (attributes) IMFAttributes_GetUnknown(attributes, &MF_SOURCE_READER_MEDIASOURCE_CONFIG, &IID_IPropertyStore, (void **)&props); hr = IMFSourceResolver_CreateObjectFromURL(resolver, url, MF_RESOLUTION_MEDIASOURCE, props, &obj_type, &object); if (SUCCEEDED(hr)) { switch (obj_type) { case MF_OBJECT_BYTESTREAM: hr = IMFSourceResolver_CreateObjectFromByteStream(resolver, (IMFByteStream *)object, NULL, MF_RESOLUTION_MEDIASOURCE, props, &obj_type, (IUnknown **)&source); break; case MF_OBJECT_MEDIASOURCE: source = (IMFMediaSource *)object; IMFMediaSource_AddRef(source); break; default: WARN("Unknown object type %d.\n", obj_type); hr = E_UNEXPECTED; } IUnknown_Release(object); } IMFSourceResolver_Release(resolver); if (props) IPropertyStore_Release(props); if (FAILED(hr)) return hr; hr = create_source_reader_from_source(source, attributes, TRUE, riid, out); IMFMediaSource_Release(source); return hr; } static HRESULT create_source_reader_from_object(IUnknown *unk, IMFAttributes *attributes, REFIID riid, void **out) { IMFMediaSource *source = NULL; IMFByteStream *stream = NULL; HRESULT hr; hr = IUnknown_QueryInterface(unk, &IID_IMFMediaSource, (void **)&source); if (FAILED(hr)) hr = IUnknown_QueryInterface(unk, &IID_IMFByteStream, (void **)&stream); if (source) { UINT32 disconnect = 0; if (attributes) IMFAttributes_GetUINT32(attributes, &MF_SOURCE_READER_DISCONNECT_MEDIASOURCE_ON_SHUTDOWN, &disconnect); hr = create_source_reader_from_source(source, attributes, !disconnect, riid, out); } else if (stream) hr = create_source_reader_from_stream(stream, attributes, riid, out); if (source) IMFMediaSource_Release(source); if (stream) IMFByteStream_Release(stream); return hr; } /*********************************************************************** * MFCreateSourceReaderFromByteStream (mfreadwrite.@) */ HRESULT WINAPI MFCreateSourceReaderFromByteStream(IMFByteStream *stream, IMFAttributes *attributes, IMFSourceReader **reader) { TRACE("%p, %p, %p.\n", stream, attributes, reader); return create_source_reader_from_object((IUnknown *)stream, attributes, &IID_IMFSourceReader, (void **)reader); } /*********************************************************************** * MFCreateSourceReaderFromMediaSource (mfreadwrite.@) */ HRESULT WINAPI MFCreateSourceReaderFromMediaSource(IMFMediaSource *source, IMFAttributes *attributes, IMFSourceReader **reader) { TRACE("%p, %p, %p.\n", source, attributes, reader); return create_source_reader_from_object((IUnknown *)source, attributes, &IID_IMFSourceReader, (void **)reader); } /*********************************************************************** * MFCreateSourceReaderFromURL (mfreadwrite.@) */ HRESULT WINAPI MFCreateSourceReaderFromURL(const WCHAR *url, IMFAttributes *attributes, IMFSourceReader **reader) { TRACE("%s, %p, %p.\n", debugstr_w(url), attributes, reader); return create_source_reader_from_url(url, attributes, &IID_IMFSourceReader, (void **)reader); } static HRESULT WINAPI readwrite_factory_QueryInterface(IMFReadWriteClassFactory *iface, REFIID riid, void **out) { if (IsEqualIID(riid, &IID_IMFReadWriteClassFactory) || IsEqualIID(riid, &IID_IUnknown)) { *out = iface; IMFReadWriteClassFactory_AddRef(iface); return S_OK; } WARN("Unsupported interface %s.\n", debugstr_guid(riid)); *out = NULL; return E_NOINTERFACE; } static ULONG WINAPI readwrite_factory_AddRef(IMFReadWriteClassFactory *iface) { return 2; } static ULONG WINAPI readwrite_factory_Release(IMFReadWriteClassFactory *iface) { return 1; } static HRESULT WINAPI readwrite_factory_CreateInstanceFromURL(IMFReadWriteClassFactory *iface, REFCLSID clsid, const WCHAR *url, IMFAttributes *attributes, REFIID riid, void **out) { TRACE("%s, %s, %p, %s, %p.\n", debugstr_guid(clsid), debugstr_w(url), attributes, debugstr_guid(riid), out); if (IsEqualGUID(clsid, &CLSID_MFSourceReader)) { return create_source_reader_from_url(url, attributes, &IID_IMFSourceReader, out); } FIXME("Unsupported %s.\n", debugstr_guid(clsid)); return E_NOTIMPL; } static HRESULT WINAPI readwrite_factory_CreateInstanceFromObject(IMFReadWriteClassFactory *iface, REFCLSID clsid, IUnknown *unk, IMFAttributes *attributes, REFIID riid, void **out) { HRESULT hr; TRACE("%s, %p, %p, %s, %p.\n", debugstr_guid(clsid), unk, attributes, debugstr_guid(riid), out); if (IsEqualGUID(clsid, &CLSID_MFSourceReader)) { return create_source_reader_from_object(unk, attributes, riid, out); } else if (IsEqualGUID(clsid, &CLSID_MFSinkWriter)) { IMFByteStream *stream = NULL; IMFMediaSink *sink = NULL; hr = IUnknown_QueryInterface(unk, &IID_IMFByteStream, (void **)&stream); if (FAILED(hr)) hr = IUnknown_QueryInterface(unk, &IID_IMFMediaSink, (void **)&sink); if (stream) hr = create_sink_writer_from_stream(stream, attributes, riid, out); else if (sink) hr = create_sink_writer_from_sink(sink, attributes, riid, out); if (sink) IMFMediaSink_Release(sink); if (stream) IMFByteStream_Release(stream); return hr; } else { WARN("Unsupported class %s.\n", debugstr_guid(clsid)); *out = NULL; return E_FAIL; } } static const IMFReadWriteClassFactoryVtbl readwrite_factory_vtbl = { readwrite_factory_QueryInterface, readwrite_factory_AddRef, readwrite_factory_Release, readwrite_factory_CreateInstanceFromURL, readwrite_factory_CreateInstanceFromObject, }; static IMFReadWriteClassFactory readwrite_factory = { &readwrite_factory_vtbl }; static HRESULT WINAPI classfactory_QueryInterface(IClassFactory *iface, REFIID riid, void **out) { TRACE("%s, %p.\n", debugstr_guid(riid), out); if (IsEqualGUID(riid, &IID_IClassFactory) || IsEqualGUID(riid, &IID_IUnknown)) { IClassFactory_AddRef(iface); *out = iface; return S_OK; } WARN("interface %s not implemented\n", debugstr_guid(riid)); *out = NULL; return E_NOINTERFACE; } static ULONG WINAPI classfactory_AddRef(IClassFactory *iface) { return 2; } static ULONG WINAPI classfactory_Release(IClassFactory *iface) { return 1; } static HRESULT WINAPI classfactory_CreateInstance(IClassFactory *iface, IUnknown *outer, REFIID riid, void **out) { TRACE("%p, %s, %p.\n", outer, debugstr_guid(riid), out); *out = NULL; if (outer) return CLASS_E_NOAGGREGATION; return IMFReadWriteClassFactory_QueryInterface(&readwrite_factory, riid, out); } static HRESULT WINAPI classfactory_LockServer(IClassFactory *iface, BOOL dolock) { FIXME("%d.\n", dolock); return S_OK; } static const struct IClassFactoryVtbl classfactoryvtbl = { classfactory_QueryInterface, classfactory_AddRef, classfactory_Release, classfactory_CreateInstance, classfactory_LockServer, }; static IClassFactory classfactory = { &classfactoryvtbl }; HRESULT WINAPI DllGetClassObject(REFCLSID clsid, REFIID riid, void **out) { TRACE("%s, %s, %p.\n", debugstr_guid(clsid), debugstr_guid(riid), out); if (IsEqualGUID(clsid, &CLSID_MFReadWriteClassFactory)) return IClassFactory_QueryInterface(&classfactory, riid, out); WARN("Unsupported class %s.\n", debugstr_guid(clsid)); *out = NULL; return CLASS_E_CLASSNOTAVAILABLE; }