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dshow_enumpins.c
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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 
25  { {&IID_IUnknown,0}, {&IID_IEnumPins,0} })
28 
29 long WINAPI
30 libAVEnumPins_Next(libAVEnumPins *this, unsigned long n, IPin **pins,
31  unsigned long *fetched)
32 {
33  int count = 0;
34  dshowdebug("libAVEnumPins_Next(%p)\n", this);
35  if (!pins)
36  return E_POINTER;
37  if (!this->pos && n == 1) {
38  libAVPin_AddRef(this->pin);
39  *pins = (IPin *) this->pin;
40  count = 1;
41  this->pos = 1;
42  }
43  if (fetched)
44  *fetched = count;
45  if (!count)
46  return S_FALSE;
47  return S_OK;
48 }
49 long WINAPI
50 libAVEnumPins_Skip(libAVEnumPins *this, unsigned long n)
51 {
52  dshowdebug("libAVEnumPins_Skip(%p)\n", this);
53  if (n) /* Any skip will always fall outside of the only valid pin. */
54  return S_FALSE;
55  return S_OK;
56 }
57 long WINAPI
59 {
60  dshowdebug("libAVEnumPins_Reset(%p)\n", this);
61  this->pos = 0;
62  return S_OK;
63 }
64 long WINAPI
66 {
67  libAVEnumPins *new;
68  dshowdebug("libAVEnumPins_Clone(%p)\n", this);
69  if (!pins)
70  return E_POINTER;
71  new = libAVEnumPins_Create(this->pin, this->filter);
72  if (!new)
73  return E_OUTOFMEMORY;
74  new->pos = this->pos;
75  *pins = new;
76  return S_OK;
77 }
78 
79 static int
81 {
82  IEnumPinsVtbl *vtbl = this->vtbl;
83  SETVTBL(vtbl, libAVEnumPins, QueryInterface);
84  SETVTBL(vtbl, libAVEnumPins, AddRef);
85  SETVTBL(vtbl, libAVEnumPins, Release);
86  SETVTBL(vtbl, libAVEnumPins, Next);
87  SETVTBL(vtbl, libAVEnumPins, Skip);
88  SETVTBL(vtbl, libAVEnumPins, Reset);
89  SETVTBL(vtbl, libAVEnumPins, Clone);
90 
91  this->pin = pin;
92  this->filter = filter;
93  libAVFilter_AddRef(this->filter);
94 
95  return 1;
96 }
97 static int
99 {
101  return 1;
102 }
104  libAVPin *pin, libAVFilter *filter)
#define S_OK
Definition: windows2linux.h:40
long WINAPI libAVEnumPins_Reset(libAVEnumPins *this)
#define dshowdebug(...)
Definition: dshow_capture.h:50
#define DECLARE_DESTROY(class, func)
#define E_POINTER
Definition: windows2linux.h:43
#define DECLARE_CREATE(class, setup,...)
static void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len, int clip)
Definition: cfhd.c:97
#define DECLARE_RELEASE(class)
unsigned long WINAPI libAVPin_AddRef(libAVPin *)
GLsizei count
Definition: opengl_enc.c:109
long WINAPI libAVEnumPins_Next(libAVEnumPins *, unsigned long, IPin **, unsigned long *)
int n
Definition: avisynth_c.h:684
#define SETVTBL(vtbl, class, fn)
static int libAVEnumPins_Cleanup(libAVEnumPins *this)
long WINAPI libAVEnumPins_Skip(libAVEnumPins *this, unsigned long n)
DECLARE_QUERYINTERFACE(libAVEnumPins,{{&IID_IUnknown, 0},{&IID_IEnumPins, 0}})
unsigned long WINAPI libAVFilter_AddRef(libAVFilter *)
libAVEnumPins * libAVEnumPins_Create(libAVPin *pin, libAVFilter *filter)
#define E_OUTOFMEMORY
Definition: windows2linux.h:45
unsigned long WINAPI libAVFilter_Release(libAVFilter *)
#define S_FALSE
Definition: windows2linux.h:41
static int libAVEnumPins_Setup(libAVEnumPins *this, libAVPin *pin, libAVFilter *filter)
long WINAPI libAVEnumPins_Clone(libAVEnumPins *this, libAVEnumPins **pins)
#define DECLARE_ADDREF(class)
Definition: dshow_capture.h:94