/[cvs]/api/include/DShowIDL/mediaobj.idl
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Annotation of /api/include/DShowIDL/mediaobj.idl

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Revision 1.1.1.1 - (hide annotations) (vendor branch)
Sun Jul 1 20:47:59 2001 UTC (23 years, 4 months ago) by bearsoft
Branch: lazy, MAIN
CVS Tags: start, HEAD
Changes since 1.1: +0 -0 lines
First import

1 bearsoft 1.1 //------------------------------------------------------------------------------
2     // File: MediaObj.idl
3     //
4     // Desc: Define the interfaces for DirectX Media Objects. This file will
5     // be processed by the MIDL tool to produce mediaobj.h and proxy-stub
6     // code.
7     //
8     // Copyright (c) 1999 - 2000, Microsoft Corporation. All rights reserved.
9     //------------------------------------------------------------------------------
10    
11    
12     import "unknwn.idl";
13     import "objidl.idl";
14    
15     // DMO_MEDIA_TYPE structure
16    
17     cpp_quote("#ifdef __strmif_h__")
18     cpp_quote("typedef AM_MEDIA_TYPE DMO_MEDIA_TYPE;")
19     cpp_quote("#else")
20     typedef struct _DMOMediaType {
21     GUID majortype;
22     GUID subtype;
23     BOOL bFixedSizeSamples;
24     BOOL bTemporalCompression;
25     ULONG lSampleSize;
26     GUID formattype;
27     IUnknown *pUnk;
28     ULONG cbFormat;
29     [size_is(cbFormat)] BYTE * pbFormat;
30     } DMO_MEDIA_TYPE;
31     typedef LONGLONG REFERENCE_TIME;
32     cpp_quote("#endif")
33    
34    
35     // Per-buffer flags that apply to input buffers
36     enum _DMO_INPUT_DATA_BUFFER_FLAGS {
37     DMO_INPUT_DATA_BUFFERF_SYNCPOINT = 0x00000001,
38     DMO_INPUT_DATA_BUFFERF_TIME = 0x00000002,
39     DMO_INPUT_DATA_BUFFERF_TIMELENGTH = 0x00000004
40     };
41    
42     // Per-buffer flags that apply to output buffers.
43     enum _DMO_OUTPUT_DATA_BUFFER_FLAGS {
44     DMO_OUTPUT_DATA_BUFFERF_SYNCPOINT = 0x00000001,
45     DMO_OUTPUT_DATA_BUFFERF_TIME = 0x00000002,
46     DMO_OUTPUT_DATA_BUFFERF_TIMELENGTH = 0x00000004,
47    
48     //
49     // This flag means the object could have generated more data for this
50     // output stream, even with no additional input from any input stream,
51     // but the output buffer did not have sufficient room.
52     //
53     DMO_OUTPUT_DATA_BUFFERF_INCOMPLETE = 0x01000000
54     };
55    
56     // Flags returned by GetInputStatus()
57     enum _DMO_INPUT_STATUS_FLAGS {
58     //
59     // ACCEPT_DATA indicates that the input stream is ready to accept
60     // new data via ProcessInput().
61     //
62     DMO_INPUT_STATUSF_ACCEPT_DATA = 0x00000001
63     };
64    
65     // Flags returned by GetInputStreamInfo()
66     enum _DMO_INPUT_STREAM_INFO_FLAGS {
67     DMO_INPUT_STREAMF_WHOLE_SAMPLES = 0x00000001,
68     DMO_INPUT_STREAMF_SINGLE_SAMPLE_PER_BUFFER = 0x00000002,
69     DMO_INPUT_STREAMF_FIXED_SAMPLE_SIZE = 0x00000004,
70     DMO_INPUT_STREAMF_HOLDS_BUFFERS = 0x00000008
71     };
72    
73     // Flags returned by GetOutputStreamInfo()
74     enum _DMO_OUTPUT_STREAM_INFO_FLAGS {
75     DMO_OUTPUT_STREAMF_WHOLE_SAMPLES = 0x00000001,
76     DMO_OUTPUT_STREAMF_SINGLE_SAMPLE_PER_BUFFER = 0x00000002,
77     DMO_OUTPUT_STREAMF_FIXED_SAMPLE_SIZE = 0x00000004,
78     DMO_OUTPUT_STREAMF_DISCARDABLE = 0x00000008,
79     DMO_OUTPUT_STREAMF_OPTIONAL = 0x00000010
80     };
81    
82     // SetType flags
83     enum _DMO_SET_TYPE_FLAGS {
84     DMO_SET_TYPEF_TEST_ONLY = 0x00000001,// check but don't set
85     DMO_SET_TYPEF_CLEAR = 0x00000002 // unset
86     };
87    
88     // Process Output Flags
89     enum _DMO_PROCESS_OUTPUT_FLAGS {
90     DMO_PROCESS_OUTPUT_DISCARD_WHEN_NO_BUFFER = 0x00000001 // Discard
91     };
92    
93     // Buffer wrapper interface
94     [
95     object,
96     uuid(59eff8b9-938c-4a26-82f2-95cb84cdc837)
97     ]
98     interface IMediaBuffer : IUnknown
99     {
100     HRESULT SetLength(
101     DWORD cbLength
102     );
103     HRESULT GetMaxLength(
104     [out] DWORD *pcbMaxLength
105     );
106     HRESULT GetBufferAndLength(
107     [out] BYTE **ppBuffer, // not filled if NULL
108     [out] DWORD *pcbLength // not filled if NULL
109     );
110     }
111    
112     //
113     // Output buffer info structure: one of these must be passed in for each
114     // output stream with every ProcessOutput() call
115     // All [out] fields should be
116     // assumed undefined if ProcessOutput() failed
117     //
118     typedef struct _DMO_OUTPUT_DATA_BUFFER {
119    
120     IMediaBuffer *pBuffer; // [in] can be NULL
121    
122     // ProcessOutput() must set any appropriate flags and zero out the rest.
123     DWORD dwStatus; // [out] DMO_OUTPUT_DATA_BUFFERF_XXX (INCOMPLETE, etc.)
124    
125     //
126     // Each of these is valid if the corresponding flag is set in dwStatus
127     //
128     REFERENCE_TIME rtTimestamp; // [out]
129     REFERENCE_TIME rtTimelength; // [out]
130     } DMO_OUTPUT_DATA_BUFFER, *PDMO_OUTPUT_DATA_BUFFER;
131    
132    
133     // Interface supported by media objects
134     [
135     object,
136     uuid(d8ad0f58-5494-4102-97c5-ec798e59bcf4)
137     ]
138     interface IMediaObject : IUnknown
139     {
140    
141     //
142     // Stream enumeration
143     //
144     HRESULT GetStreamCount(
145     [out] DWORD *pcInputStreams,
146     [out] DWORD *pcOutputStreams
147     );
148     HRESULT GetInputStreamInfo(
149     DWORD dwInputStreamIndex, // 0-based
150     [out] DWORD *pdwFlags // HOLDS_BUFFERS
151     );
152     HRESULT GetOutputStreamInfo(
153     DWORD dwOutputStreamIndex, // 0-based
154     [out] DWORD *pdwFlags // Media object sets to 0
155     );
156    
157     //
158     // Mediatypes
159     //
160     //
161     // GetType - iterate through media types supported by a stream.
162     // Returns S_FALSE if the type index is out of range ("no more types").
163     //
164     HRESULT GetInputType(
165     DWORD dwInputStreamIndex,
166     DWORD dwTypeIndex, // 0-based
167     [out] DMO_MEDIA_TYPE *pmt
168     );
169     HRESULT GetOutputType(
170     DWORD dwOutputStreamIndex,
171     DWORD dwTypeIndex, // 0-based
172     [out] DMO_MEDIA_TYPE *pmt
173     );
174    
175     //
176     // SetType - tell the object the type of data it will work with.
177     //
178     HRESULT SetInputType(
179     DWORD dwInputStreamIndex,
180     [in] const DMO_MEDIA_TYPE *pmt,
181     DWORD dwFlags // test only
182     );
183     HRESULT SetOutputType(
184     DWORD dwOutputStreamIndex,
185     [in] const DMO_MEDIA_TYPE *pmt,
186     DWORD dwFlags // test only
187     );
188    
189     //
190     // GetCurrentType - get the last mediatype supplied via SetType.
191     // Returns S_FALSE if SetType has not been called.
192     //
193     HRESULT GetInputCurrentType(
194     DWORD dwInputStreamIndex,
195     [out] DMO_MEDIA_TYPE *pmt
196     );
197     HRESULT GetOutputCurrentType(
198     DWORD dwOutputStreamIndex,
199     [out] DMO_MEDIA_TYPE *pmt
200     );
201    
202     //
203     // SizeInfo
204     //
205     //
206     // GetSizeInfo - Get buffer size requirementes of a stream.
207     //
208     // If buffer size depends on the media type used, the object should
209     // base its response on the most recent media type set for this stream.
210     // If no mediatype has been set, the object may return an error.
211     //
212     HRESULT GetInputSizeInfo(
213     DWORD dwInputStreamIndex,
214     [out] DWORD *pcbSize, // size of input 'quantum'
215     [out] DWORD *pcbMaxLookahead, // max total bytes held
216     [out] DWORD *pcbAlignment // buffer alignment requirement
217     );
218     HRESULT GetOutputSizeInfo(
219     DWORD dwOutputStreamIndex,
220     [out] DWORD *pcbSize, // size of output 'quantum'
221     [out] DWORD *pcbAlignment // buffer alignment requirement
222     );
223    
224     //
225     // Latency methods
226     //
227     HRESULT GetInputMaxLatency(
228     DWORD dwInputStreamIndex,
229     [out] REFERENCE_TIME *prtMaxLatency
230     );
231     HRESULT SetInputMaxLatency(
232     DWORD dwInputStreamIndex,
233     REFERENCE_TIME rtMaxLatency
234     );
235    
236     //
237     // Streaming / state methods
238     //
239     //
240     // Flush() - discard any buffered data.
241     //
242     HRESULT Flush();
243    
244     //
245     // Send a discontinuity to an input stream. The object will not
246     // accept any more data on this input stream until the discontinuity
247     // has been completely processed, which may involve multiple
248     // ProcessOutput() calls.
249     //
250     HRESULT Discontinuity(DWORD dwInputStreamIndex);
251    
252     //
253     // If a streaming object needs to perform any time consuming
254     // initialization before it can stream data, it should do it inside
255     // AllocateStreamingResources() rather than during the first process
256     // call.
257     //
258     // This method is NOT guaranteed to be called before streaming
259     // starts. If it is not called, the object should perform any
260     // required initialization during a process call.
261     //
262     HRESULT AllocateStreamingResources();
263    
264     // Free anything allocated in AllocateStreamingResources().
265     HRESULT FreeStreamingResources();
266    
267     // GetInputStatus - the only flag defined right now is ACCEPT_DATA.
268     HRESULT GetInputStatus(
269     DWORD dwInputStreamIndex,
270     [out] DWORD *dwFlags // ACCEPT_DATA
271     );
272    
273     //
274     // Pass one new buffer to an input stream
275     //
276     HRESULT ProcessInput(
277     DWORD dwInputStreamIndex,
278     IMediaBuffer *pBuffer, // must not be NULL
279     DWORD dwFlags, // DMO_INPUT_DATA_BUFFERF_XXX (syncpoint, etc.)
280     REFERENCE_TIME rtTimestamp, // valid if flag set
281     REFERENCE_TIME rtTimelength // valid if flag set
282     );
283    
284     //
285     // ProcessOutput() - generate output for current input buffers
286     //
287     // Output stream specific status information is returned in the
288     // dwStatus member of each buffer wrapper structure.
289     //
290     HRESULT ProcessOutput(
291     DWORD dwFlags, // DMO_PROCESS_OUTPUT_FLAGS
292     DWORD cOutputBufferCount, // # returned by GetStreamCount()
293     [in,out,size_is(cOutputBufferCount)]
294     DMO_OUTPUT_DATA_BUFFER *pOutputBuffers, // one per stream
295     [out] DWORD *pdwStatus // TBD, must be set to 0
296     );
297    
298     // Locking - lock if bLock is TRUE, otherwise unlock
299     HRESULT Lock(LONG bLock);
300     };
301    
302    
303     //
304     // Interface returned by the DMO enumeration API
305     //
306     [
307     object,
308     uuid(2c3cd98a-2bfa-4a53-9c27-5249ba64ba0f)
309     ]
310     interface IEnumDMO : IUnknown {
311     HRESULT Next(
312     DWORD cItemsToFetch,
313     [out, size_is(cItemsToFetch), length_is(*pcItemsFetched)] CLSID *pCLSID,
314     [out, size_is(cItemsToFetch), length_is(*pcItemsFetched), string] WCHAR **Names,
315     [out] DWORD *pcItemsFetched
316     );
317     HRESULT Skip(
318     DWORD cItemsToSkip
319     );
320     HRESULT Reset(void);
321     HRESULT Clone(
322     [out] IEnumDMO **ppEnum
323     );
324     }
325    
326    
327     // Flags for IMediaObjectInPlace::Process
328     enum _DMO_INPLACE_PROCESS_FLAGS {
329     DMO_INPLACE_NORMAL = 0x00000000,
330     DMO_INPLACE_ZERO = 0x00000001
331     };
332    
333     [
334     object,
335     uuid(651b9ad0-0fc7-4aa9-9538-d89931010741)
336     ]
337     interface IMediaObjectInPlace : IUnknown {
338    
339     // Proces - Given a buffer of size ulSize, put the output
340     // of the DMO into the same buffer.
341     HRESULT Process(
342     [in] ULONG ulSize,
343     [in,out,size_is(ulSize)] BYTE* pData,
344     [in] REFERENCE_TIME refTimeStart,
345     [in] DWORD dwFlags
346     );
347    
348     // Create a copy of the In-Place Media Object. This allows
349     // for very fast initialization of a number of In-Place objects
350     // in a known state.
351     HRESULT Clone(
352     [out] IMediaObjectInPlace **ppMediaObject
353     );
354    
355     // GetLatency - Returns a REFERENCE_TIME value
356     // (1 tick = 100ns) which corresponds to the latency time
357     // processing this effect will add to the graph. This assumes
358     // the effect cost per buffer is a constant.
359     HRESULT GetLatency(
360     [out] REFERENCE_TIME *pLatencyTime
361     );
362     }
363    
364     // Quality control status flags
365     enum _DMO_QUALITY_STATUS_FLAGS {
366     DMO_QUALITY_STATUS_ENABLED = 0x00000001
367     };
368    
369     [
370     object,
371     uuid(65abea96-cf36-453f-af8a-705e98f16260)
372     ]
373     interface IDMOQualityControl : IUnknown {
374     HRESULT SetNow(
375     [in] REFERENCE_TIME rtNow
376     );
377     HRESULT SetStatus(
378     [in] DWORD dwFlags
379     );
380     HRESULT GetStatus(
381     [out] DWORD *pdwFlags
382     );
383     }
384    
385     // Flags for IVideoOutputOptimizations
386     enum _DMO_VIDEO_OUTPUT_STREAM_FLAGS {
387     DMO_VOSF_NEEDS_PREVIOUS_SAMPLE = 0x00000001
388     };
389    
390     [
391     object,
392     uuid(be8f4f4e-5b16-4d29-b350-7f6b5d9298ac)
393     ]
394     interface IDMOVideoOutputOptimizations : IUnknown {
395     HRESULT QueryOperationModePreferences (
396     ULONG ulOutputStreamIndex,
397     DWORD *pdwRequestedCapabilities
398     );
399     HRESULT SetOperationMode (
400     ULONG ulOutputStreamIndex,
401     DWORD dwEnabledFeatures
402     );
403     HRESULT GetCurrentOperationMode (
404     ULONG ulOutputStreamIndex,
405     DWORD *pdwEnabledFeatures
406     );
407     HRESULT GetCurrentSampleRequirements (
408     ULONG ulOutputStreamIndex,
409     DWORD *pdwRequestedFeatures
410     );
411     }
412    

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