static gboolean
gst_dshowvideodec_get_filter_output_format (GstDshowVideoDec * vdec,
GUID * subtype, VIDEOINFOHEADER ** format, guint * size)
{
IPin *output_pin = NULL;
IEnumMediaTypes *enum_mediatypes = NULL;
HRESULT hres;
ULONG fetched;
BOOL ret = FALSE;
if (!vdec->decfilter)
return FALSE;
if (!gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT,
&output_pin)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("failed getting ouput pin from the decoder"), (NULL));
return FALSE;
}
hres = IPin_EnumMediaTypes (output_pin, &enum_mediatypes);
if (hres == S_OK && enum_mediatypes) {
AM_MEDIA_TYPE *mediatype = NULL;
IEnumMediaTypes_Reset (enum_mediatypes);
while (hres =
IEnumMoniker_Next (enum_mediatypes, 1, &mediatype, &fetched),
hres == S_OK) {
RPC_STATUS rpcstatus;
if ((UuidCompare (&mediatype->subtype, subtype, &rpcstatus) == 0
&& rpcstatus == RPC_S_OK) &&
(UuidCompare (&mediatype->formattype, &FORMAT_VideoInfo,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)) {
*size = mediatype->cbFormat;
*format = g_malloc0 (*size);
memcpy (*format, mediatype->pbFormat, *size);
ret = TRUE;
}
gst_dshow_free_mediatype (mediatype);
if (ret)
break;
}
IEnumMediaTypes_Release (enum_mediatypes);
}
if (output_pin) {
IPin_Release (output_pin);
}
return ret;
}
void
gst_dshow_free_pin_mediatype (gpointer pt)
{
GstCapturePinMediaType *pin_mediatype = (GstCapturePinMediaType *) pt;
if (pin_mediatype) {
if (pin_mediatype->capture_pin) {
pin_mediatype->capture_pin->Release ();
pin_mediatype->capture_pin = NULL;
}
if (pin_mediatype->mediatype) {
gst_dshow_free_mediatype (pin_mediatype->mediatype);
pin_mediatype->mediatype = NULL;
}
}
}
static GstCaps *
gst_dshowvideodec_src_getcaps (GstPad * pad)
{
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
GstCaps *caps = NULL;
if (!vdec->srccaps)
vdec->srccaps = gst_caps_new_empty ();
if (vdec->decfilter) {
IPin *output_pin = NULL;
IEnumMediaTypes *enum_mediatypes = NULL;
HRESULT hres;
ULONG fetched;
if (!gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT,
&output_pin)) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED,
("failed getting ouput pin from the decoder"), (NULL));
goto beach;
}
hres = IPin_EnumMediaTypes (output_pin, &enum_mediatypes);
if (hres == S_OK && enum_mediatypes) {
AM_MEDIA_TYPE *mediatype = NULL;
IEnumMediaTypes_Reset (enum_mediatypes);
while (hres =
IEnumMoniker_Next (enum_mediatypes, 1, &mediatype, &fetched),
hres == S_OK) {
RPC_STATUS rpcstatus;
VIDEOINFOHEADER *video_info;
GstCaps *mediacaps = NULL;
/* RGB24 */
if ((UuidCompare (&mediatype->subtype, &MEDIASUBTYPE_RGB24,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)
&& (UuidCompare (&mediatype->formattype, &FORMAT_VideoInfo,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)) {
video_info = (VIDEOINFOHEADER *) mediatype->pbFormat;
/* ffmpegcolorspace handles RGB24 in BIG_ENDIAN */
mediacaps = gst_caps_new_simple ("video/x-raw-rgb",
"bpp", G_TYPE_INT, 24,
"depth", G_TYPE_INT, 24,
"width", G_TYPE_INT, video_info->bmiHeader.biWidth,
"height", G_TYPE_INT, video_info->bmiHeader.biHeight,
"framerate", GST_TYPE_FRACTION,
(int) (10000000 / video_info->AvgTimePerFrame), 1, "endianness",
G_TYPE_INT, G_BIG_ENDIAN, "red_mask", G_TYPE_INT, 255,
"green_mask", G_TYPE_INT, 65280, "blue_mask", G_TYPE_INT,
16711680, NULL);
if (mediacaps) {
vdec->mediatypes = g_list_append (vdec->mediatypes, mediatype);
gst_caps_append (vdec->srccaps, mediacaps);
} else {
gst_dshow_free_mediatype (mediatype);
}
} else {
gst_dshow_free_mediatype (mediatype);
}
}
IEnumMediaTypes_Release (enum_mediatypes);
}
if (output_pin) {
IPin_Release (output_pin);
}
}
if (vdec->srccaps)
caps = gst_caps_ref (vdec->srccaps);
beach:
gst_object_unref (vdec);
return caps;
}
