DirectShow capture support

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 99 insertions, 0 deletions

diff --git a/libavdevice/dshow_enumpins.c b/libavdevice/dshow_enumpins.c
new file mode 100644
index 0000000000..97890fb88e
--- /dev/null
+++ b/libavdevice/dshow_enumpins.c
@@ -0,0 +1,99 @@
+/*
+ * DirectShow capture interface
+ * Copyright (c) 2010 Ramiro Polla
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "dshow.h"
+
+DECLARE_QUERYINTERFACE(libAVEnumPins,
+    { {&IID_IUnknown,0}, {&IID_IEnumPins,0} })
+DECLARE_ADDREF(libAVEnumPins)
+DECLARE_RELEASE(libAVEnumPins)
+
+long WINAPI
+libAVEnumPins_Next(libAVEnumPins *this, unsigned long n, IPin **pins,
+                   unsigned long *fetched)
+{
+    int count = 0;
+    dshowdebug("libAVEnumPins_Next(%p)\n", this);
+    if (!pins)
+        return E_POINTER;
+    if (!this->pos && n == 1) {
+        libAVPin_AddRef(this->pin);
+        *pins = (IPin *) this->pin;
+        count = 1;
+        this->pos = 1;
+    }
+    if (fetched)
+        *fetched = count;
+    if (!count)
+        return S_FALSE;
+    return S_OK;
+}
+long WINAPI
+libAVEnumPins_Skip(libAVEnumPins *this, unsigned long n)
+{
+    dshowdebug("libAVEnumPins_Skip(%p)\n", this);
+    if (n) /* Any skip will always fall outside of the only valid pin. */
+        return S_FALSE;
+    return S_OK;
+}
+long WINAPI
+libAVEnumPins_Reset(libAVEnumPins *this)
+{
+    dshowdebug("libAVEnumPins_Reset(%p)\n", this);
+    this->pos = 0;
+    return S_OK;
+}
+long WINAPI
+libAVEnumPins_Clone(libAVEnumPins *this, libAVEnumPins **pins)
+{
+    libAVEnumPins *new;
+    dshowdebug("libAVEnumPins_Clone(%p)\n", this);
+    if (!pins)
+        return E_POINTER;
+    new = libAVEnumPins_Create(this->pin, this->filter);
+    if (!new)
+        return E_OUTOFMEMORY;
+    new->pos = this->pos;
+    *pins = new;
+    return S_OK;
+}
+
+static int
+libAVEnumPins_Setup(libAVEnumPins *this, libAVPin *pin, libAVFilter *filter)
+{
+    IEnumPinsVtbl *vtbl = this->vtbl;
+    SETVTBL(vtbl, libAVEnumPins, QueryInterface);
+    SETVTBL(vtbl, libAVEnumPins, AddRef);
+    SETVTBL(vtbl, libAVEnumPins, Release);
+    SETVTBL(vtbl, libAVEnumPins, Next);
+    SETVTBL(vtbl, libAVEnumPins, Skip);
+    SETVTBL(vtbl, libAVEnumPins, Reset);
+    SETVTBL(vtbl, libAVEnumPins, Clone);
+
+    this->pin = pin;
+    this->filter = filter;
+    libAVFilter_AddRef(this->filter);
+
+    return 1;
+}
+DECLARE_CREATE(libAVEnumPins, libAVEnumPins_Setup(this, pin, filter),
+               libAVPin *pin, libAVFilter *filter)
+DECLARE_DESTROY(libAVEnumPins, nothing)