DirectShow capture support

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

1 files changed, 103 insertions, 0 deletions

diff --git a/libavdevice/dshow_enummediatypes.c b/libavdevice/dshow_enummediatypes.c
new file mode 100644
index 0000000000..a700133ba6
--- /dev/null
+++ b/libavdevice/dshow_enummediatypes.c
@@ -0,0 +1,103 @@
+/*
+ * 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(libAVEnumMediaTypes,
+    { {&IID_IUnknown,0}, {&IID_IEnumPins,0} })
+DECLARE_ADDREF(libAVEnumMediaTypes)
+DECLARE_RELEASE(libAVEnumMediaTypes)
+
+long WINAPI
+libAVEnumMediaTypes_Next(libAVEnumMediaTypes *this, unsigned long n,
+                         AM_MEDIA_TYPE **types, unsigned long *fetched)
+{
+    int count = 0;
+    dshowdebug("libAVEnumMediaTypes_Next(%p)\n", this);
+    if (!types)
+        return E_POINTER;
+    if (!this->pos && n == 1) {
+        if (!IsEqualGUID(&this->type.majortype, &GUID_NULL)) {
+            AM_MEDIA_TYPE *type = av_malloc(sizeof(AM_MEDIA_TYPE));
+            ff_copy_dshow_media_type(type, &this->type);
+            *types = type;
+            count = 1;
+        }
+        this->pos = 1;
+    }
+    if (fetched)
+        *fetched = count;
+    if (!count)
+        return S_FALSE;
+    return S_OK;
+}
+long WINAPI
+libAVEnumMediaTypes_Skip(libAVEnumMediaTypes *this, unsigned long n)
+{
+    dshowdebug("libAVEnumMediaTypes_Skip(%p)\n", this);
+    if (n) /* Any skip will always fall outside of the only valid type. */
+        return S_FALSE;
+    return S_OK;
+}
+long WINAPI
+libAVEnumMediaTypes_Reset(libAVEnumMediaTypes *this)
+{
+    dshowdebug("libAVEnumMediaTypes_Reset(%p)\n", this);
+    this->pos = 0;
+    return S_OK;
+}
+long WINAPI
+libAVEnumMediaTypes_Clone(libAVEnumMediaTypes *this, libAVEnumMediaTypes **enums)
+{
+    libAVEnumMediaTypes *new;
+    dshowdebug("libAVEnumMediaTypes_Clone(%p)\n", this);
+    if (!enums)
+        return E_POINTER;
+    new = libAVEnumMediaTypes_Create(&this->type);
+    if (!new)
+        return E_OUTOFMEMORY;
+    new->pos = this->pos;
+    *enums = new;
+    return S_OK;
+}
+
+static int
+libAVEnumMediaTypes_Setup(libAVEnumMediaTypes *this, const AM_MEDIA_TYPE *type)
+{
+    IEnumPinsVtbl *vtbl = this->vtbl;
+    SETVTBL(vtbl, libAVEnumMediaTypes, QueryInterface);
+    SETVTBL(vtbl, libAVEnumMediaTypes, AddRef);
+    SETVTBL(vtbl, libAVEnumMediaTypes, Release);
+    SETVTBL(vtbl, libAVEnumMediaTypes, Next);
+    SETVTBL(vtbl, libAVEnumMediaTypes, Skip);
+    SETVTBL(vtbl, libAVEnumMediaTypes, Reset);
+    SETVTBL(vtbl, libAVEnumMediaTypes, Clone);
+
+    if (!type) {
+        this->type.majortype = GUID_NULL;
+    } else {
+        ff_copy_dshow_media_type(&this->type, type);
+    }
+
+    return 1;
+}
+DECLARE_CREATE(libAVEnumMediaTypes, libAVEnumMediaTypes_Setup(this, type), const AM_MEDIA_TYPE *type)
+DECLARE_DESTROY(libAVEnumMediaTypes, nothing)