1/*
2 * DirectShow capture interface
3 * Copyright (c) 2010 Ramiro Polla
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "dshow_capture.h"
23
24#include <stddef.h>
25#define imemoffset offsetof(libAVPin, imemvtbl)
26
27DECLARE_QUERYINTERFACE(libAVPin,
28    { {&IID_IUnknown,0}, {&IID_IPin,0}, {&IID_IMemInputPin,imemoffset} })
29DECLARE_ADDREF(libAVPin)
30DECLARE_RELEASE(libAVPin)
31
32long WINAPI
33libAVPin_Connect(libAVPin *this, IPin *pin, const AM_MEDIA_TYPE *type)
34{
35    dshowdebug("libAVPin_Connect(%p, %p, %p)\n", this, pin, type);
36    /* Input pins receive connections. */
37    return S_FALSE;
38}
39long WINAPI
40libAVPin_ReceiveConnection(libAVPin *this, IPin *pin,
41                           const AM_MEDIA_TYPE *type)
42{
43    enum dshowDeviceType devtype = this->filter->type;
44    dshowdebug("libAVPin_ReceiveConnection(%p)\n", this);
45
46    if (!pin)
47        return E_POINTER;
48    if (this->connectedto)
49        return VFW_E_ALREADY_CONNECTED;
50
51    ff_print_AM_MEDIA_TYPE(type);
52    if (devtype == VideoDevice) {
53        if (!IsEqualGUID(&type->majortype, &MEDIATYPE_Video))
54            return VFW_E_TYPE_NOT_ACCEPTED;
55    } else {
56        if (!IsEqualGUID(&type->majortype, &MEDIATYPE_Audio))
57            return VFW_E_TYPE_NOT_ACCEPTED;
58    }
59
60    IPin_AddRef(pin);
61    this->connectedto = pin;
62
63    ff_copy_dshow_media_type(&this->type, type);
64
65    return S_OK;
66}
67long WINAPI
68libAVPin_Disconnect(libAVPin *this)
69{
70    dshowdebug("libAVPin_Disconnect(%p)\n", this);
71
72    if (this->filter->state != State_Stopped)
73        return VFW_E_NOT_STOPPED;
74    if (!this->connectedto)
75        return S_FALSE;
76    IPin_Release(this->connectedto);
77    this->connectedto = NULL;
78
79    return S_OK;
80}
81long WINAPI
82libAVPin_ConnectedTo(libAVPin *this, IPin **pin)
83{
84    dshowdebug("libAVPin_ConnectedTo(%p)\n", this);
85
86    if (!pin)
87        return E_POINTER;
88    if (!this->connectedto)
89        return VFW_E_NOT_CONNECTED;
90    IPin_AddRef(this->connectedto);
91    *pin = this->connectedto;
92
93    return S_OK;
94}
95long WINAPI
96libAVPin_ConnectionMediaType(libAVPin *this, AM_MEDIA_TYPE *type)
97{
98    dshowdebug("libAVPin_ConnectionMediaType(%p)\n", this);
99
100    if (!type)
101        return E_POINTER;
102    if (!this->connectedto)
103        return VFW_E_NOT_CONNECTED;
104
105    return ff_copy_dshow_media_type(type, &this->type);
106}
107long WINAPI
108libAVPin_QueryPinInfo(libAVPin *this, PIN_INFO *info)
109{
110    dshowdebug("libAVPin_QueryPinInfo(%p)\n", this);
111
112    if (!info)
113        return E_POINTER;
114
115    if (this->filter)
116        libAVFilter_AddRef(this->filter);
117
118    info->pFilter = (IBaseFilter *) this->filter;
119    info->dir     = PINDIR_INPUT;
120    wcscpy(info->achName, L"Capture");
121
122    return S_OK;
123}
124long WINAPI
125libAVPin_QueryDirection(libAVPin *this, PIN_DIRECTION *dir)
126{
127    dshowdebug("libAVPin_QueryDirection(%p)\n", this);
128    if (!dir)
129        return E_POINTER;
130    *dir = PINDIR_INPUT;
131    return S_OK;
132}
133long WINAPI
134libAVPin_QueryId(libAVPin *this, wchar_t **id)
135{
136    dshowdebug("libAVPin_QueryId(%p)\n", this);
137
138    if (!id)
139        return E_POINTER;
140
141    *id = wcsdup(L"libAV Pin");
142
143    return S_OK;
144}
145long WINAPI
146libAVPin_QueryAccept(libAVPin *this, const AM_MEDIA_TYPE *type)
147{
148    dshowdebug("libAVPin_QueryAccept(%p)\n", this);
149    return S_FALSE;
150}
151long WINAPI
152libAVPin_EnumMediaTypes(libAVPin *this, IEnumMediaTypes **enumtypes)
153{
154    const AM_MEDIA_TYPE *type = NULL;
155    libAVEnumMediaTypes *new;
156    dshowdebug("libAVPin_EnumMediaTypes(%p)\n", this);
157
158    if (!enumtypes)
159        return E_POINTER;
160    new = libAVEnumMediaTypes_Create(type);
161    if (!new)
162        return E_OUTOFMEMORY;
163
164    *enumtypes = (IEnumMediaTypes *) new;
165    return S_OK;
166}
167long WINAPI
168libAVPin_QueryInternalConnections(libAVPin *this, IPin **pin,
169                                  unsigned long *npin)
170{
171    dshowdebug("libAVPin_QueryInternalConnections(%p)\n", this);
172    return E_NOTIMPL;
173}
174long WINAPI
175libAVPin_EndOfStream(libAVPin *this)
176{
177    dshowdebug("libAVPin_EndOfStream(%p)\n", this);
178    /* I don't care. */
179    return S_OK;
180}
181long WINAPI
182libAVPin_BeginFlush(libAVPin *this)
183{
184    dshowdebug("libAVPin_BeginFlush(%p)\n", this);
185    /* I don't care. */
186    return S_OK;
187}
188long WINAPI
189libAVPin_EndFlush(libAVPin *this)
190{
191    dshowdebug("libAVPin_EndFlush(%p)\n", this);
192    /* I don't care. */
193    return S_OK;
194}
195long WINAPI
196libAVPin_NewSegment(libAVPin *this, REFERENCE_TIME start, REFERENCE_TIME stop,
197                    double rate)
198{
199    dshowdebug("libAVPin_NewSegment(%p)\n", this);
200    /* I don't care. */
201    return S_OK;
202}
203
204static int
205libAVPin_Setup(libAVPin *this, libAVFilter *filter)
206{
207    IPinVtbl *vtbl = this->vtbl;
208    IMemInputPinVtbl *imemvtbl;
209
210    if (!filter)
211        return 0;
212
213    imemvtbl = av_malloc(sizeof(IMemInputPinVtbl));
214    if (!imemvtbl)
215        return 0;
216
217    SETVTBL(imemvtbl, libAVMemInputPin, QueryInterface);
218    SETVTBL(imemvtbl, libAVMemInputPin, AddRef);
219    SETVTBL(imemvtbl, libAVMemInputPin, Release);
220    SETVTBL(imemvtbl, libAVMemInputPin, GetAllocator);
221    SETVTBL(imemvtbl, libAVMemInputPin, NotifyAllocator);
222    SETVTBL(imemvtbl, libAVMemInputPin, GetAllocatorRequirements);
223    SETVTBL(imemvtbl, libAVMemInputPin, Receive);
224    SETVTBL(imemvtbl, libAVMemInputPin, ReceiveMultiple);
225    SETVTBL(imemvtbl, libAVMemInputPin, ReceiveCanBlock);
226
227    this->imemvtbl = imemvtbl;
228
229    SETVTBL(vtbl, libAVPin, QueryInterface);
230    SETVTBL(vtbl, libAVPin, AddRef);
231    SETVTBL(vtbl, libAVPin, Release);
232    SETVTBL(vtbl, libAVPin, Connect);
233    SETVTBL(vtbl, libAVPin, ReceiveConnection);
234    SETVTBL(vtbl, libAVPin, Disconnect);
235    SETVTBL(vtbl, libAVPin, ConnectedTo);
236    SETVTBL(vtbl, libAVPin, ConnectionMediaType);
237    SETVTBL(vtbl, libAVPin, QueryPinInfo);
238    SETVTBL(vtbl, libAVPin, QueryDirection);
239    SETVTBL(vtbl, libAVPin, QueryId);
240    SETVTBL(vtbl, libAVPin, QueryAccept);
241    SETVTBL(vtbl, libAVPin, EnumMediaTypes);
242    SETVTBL(vtbl, libAVPin, QueryInternalConnections);
243    SETVTBL(vtbl, libAVPin, EndOfStream);
244    SETVTBL(vtbl, libAVPin, BeginFlush);
245    SETVTBL(vtbl, libAVPin, EndFlush);
246    SETVTBL(vtbl, libAVPin, NewSegment);
247
248    this->filter = filter;
249
250    return 1;
251}
252DECLARE_CREATE(libAVPin, libAVPin_Setup(this, filter), libAVFilter *filter)
253DECLARE_DESTROY(libAVPin, nothing)
254
255/*****************************************************************************
256 * libAVMemInputPin
257 ****************************************************************************/
258long WINAPI
259libAVMemInputPin_QueryInterface(libAVMemInputPin *this, const GUID *riid,
260                                void **ppvObject)
261{
262    libAVPin *pin = (libAVPin *) ((uint8_t *) this - imemoffset);
263    dshowdebug("libAVMemInputPin_QueryInterface(%p)\n", this);
264    return libAVPin_QueryInterface(pin, riid, ppvObject);
265}
266unsigned long WINAPI
267libAVMemInputPin_AddRef(libAVMemInputPin *this)
268{
269    libAVPin *pin = (libAVPin *) ((uint8_t *) this - imemoffset);
270    dshowdebug("libAVMemInputPin_AddRef(%p)\n", this);
271    return libAVPin_AddRef(pin);
272}
273unsigned long WINAPI
274libAVMemInputPin_Release(libAVMemInputPin *this)
275{
276    libAVPin *pin = (libAVPin *) ((uint8_t *) this - imemoffset);
277    dshowdebug("libAVMemInputPin_Release(%p)\n", this);
278    return libAVPin_Release(pin);
279}
280long WINAPI
281libAVMemInputPin_GetAllocator(libAVMemInputPin *this, IMemAllocator **alloc)
282{
283    dshowdebug("libAVMemInputPin_GetAllocator(%p)\n", this);
284    return VFW_E_NO_ALLOCATOR;
285}
286long WINAPI
287libAVMemInputPin_NotifyAllocator(libAVMemInputPin *this, IMemAllocator *alloc,
288                                 BOOL rdwr)
289{
290    dshowdebug("libAVMemInputPin_NotifyAllocator(%p)\n", this);
291    return S_OK;
292}
293long WINAPI
294libAVMemInputPin_GetAllocatorRequirements(libAVMemInputPin *this,
295                                          ALLOCATOR_PROPERTIES *props)
296{
297    dshowdebug("libAVMemInputPin_GetAllocatorRequirements(%p)\n", this);
298    return E_NOTIMPL;
299}
300long WINAPI
301libAVMemInputPin_Receive(libAVMemInputPin *this, IMediaSample *sample)
302{
303    libAVPin *pin = (libAVPin *) ((uint8_t *) this - imemoffset);
304    enum dshowDeviceType devtype = pin->filter->type;
305    void *priv_data;
306    uint8_t *buf;
307    int buf_size;
308    int index;
309    int64_t curtime;
310
311    dshowdebug("libAVMemInputPin_Receive(%p)\n", this);
312
313    if (!sample)
314        return E_POINTER;
315
316    if (devtype == VideoDevice) {
317        /* PTS from video devices is unreliable. */
318        IReferenceClock *clock = pin->filter->clock;
319        IReferenceClock_GetTime(clock, &curtime);
320    } else {
321        int64_t dummy;
322        IMediaSample_GetTime(sample, &curtime, &dummy);
323        curtime += pin->filter->start_time;
324    }
325
326    buf_size = IMediaSample_GetActualDataLength(sample);
327    IMediaSample_GetPointer(sample, &buf);
328    priv_data = pin->filter->priv_data;
329    index = pin->filter->stream_index;
330
331    pin->filter->callback(priv_data, index, buf, buf_size, curtime, devtype);
332
333    return S_OK;
334}
335long WINAPI
336libAVMemInputPin_ReceiveMultiple(libAVMemInputPin *this,
337                                 IMediaSample **samples, long n, long *nproc)
338{
339    int i;
340    dshowdebug("libAVMemInputPin_ReceiveMultiple(%p)\n", this);
341
342    for (i = 0; i < n; i++)
343        libAVMemInputPin_Receive(this, samples[i]);
344
345    *nproc = n;
346    return S_OK;
347}
348long WINAPI
349libAVMemInputPin_ReceiveCanBlock(libAVMemInputPin *this)
350{
351    dshowdebug("libAVMemInputPin_ReceiveCanBlock(%p)\n", this);
352    /* I swear I will not block. */
353    return S_FALSE;
354}
355
356void
357libAVMemInputPin_Destroy(libAVMemInputPin *this)
358{
359    libAVPin *pin = (libAVPin *) ((uint8_t *) this - imemoffset);
360    dshowdebug("libAVMemInputPin_Destroy(%p)\n", this);
361    libAVPin_Destroy(pin);
362}
363