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dshowvideosrc: factorize dshow format to gst caps conversion

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This commit is contained in:
Julien Isorce 2009-09-03 17:49:41 +02:00
parent a22eca4e67
commit 9a1597e58b
2 changed files with 31 additions and 82 deletions
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10
sys/dshowsrcwrapper/gstdshow.cpp
View file

@ -365,6 +365,16 @@ GstCaps *gst_dshow_new_video_caps (GstVideoFormat video_format, const gchar* nam
video_structure = gst_caps_get_structure (video_caps, 0);
/* Hope GST_TYPE_INT_RANGE_STEP will exits in future gstreamer releases */
/* because we could use : */
/* "width", GST_TYPE_INT_RANGE_STEP, video_default->minWidth, video_default->maxWidth, video_default->granularityWidth */
/* instead of : */
/* "width", GST_TYPE_INT_RANGE, video_default->minWidth, video_default->maxWidth */
/* For framerate we do not need a step (granularity) because */
/* "The IAMStreamConfig::SetFormat method will set the frame rate to the closest */
/* value that the filter supports" as it said in the VIDEO_STREAM_CONFIG_CAPS dshwo doc */
gst_structure_set (video_structure,
"width", GST_TYPE_INT_RANGE, vscc->MinOutputSize.cx, vscc->MaxOutputSize.cx,
"height", GST_TYPE_INT_RANGE, vscc->MinOutputSize.cy, vscc->MaxOutputSize.cy,

103
sys/dshowsrcwrapper/gstdshowvideosrc.cpp
View file

@ -573,7 +573,6 @@ gst_dshowvideosrc_get_caps (GstBaseSrc * basesrc)
}
if (src->caps) {
GST_LOG ("getcaps returned %s", gst_caps_to_string (src->caps));
return gst_caps_ref (src->caps);
}
@ -896,6 +895,8 @@ gst_dshowvideosrc_getcaps_from_streamcaps (GstDshowVideoSrc * src, IPin * pin,
if (isize != sizeof (vscc))
return NULL;
caps = gst_caps_new_empty ();
for (; i < icount; i++) {
GstCapturePinMediaType *pin_mediatype = g_new0 (GstCapturePinMediaType, 1);
GstCaptureVideoDefault *video_default = g_new0 (GstCaptureVideoDefault, 1);
@ -904,85 +905,26 @@ gst_dshowvideosrc_getcaps_from_streamcaps (GstDshowVideoSrc * src, IPin * pin,
pin_mediatype->capture_pin = pin;
hres = streamcaps->GetStreamCaps(i, &pin_mediatype->mediatype, (BYTE *) & vscc);
if (hres == S_OK && pin_mediatype->mediatype) {
VIDEOINFOHEADER *video_info;
if (FAILED (hres) || !pin_mediatype->mediatype) {
gst_dshow_free_pin_mediatype (pin_mediatype);
g_free (video_default);
} else {
GstCaps *mediacaps = NULL;
if (!caps)
caps = gst_caps_new_empty ();
/* some remarks: */
/* Hope GST_TYPE_INT_RANGE_STEP will exits in future gstreamer releases */
/* because we could use : */
/* "width", GST_TYPE_INT_RANGE_STEP, video_default->minWidth, video_default->maxWidth, video_default->granularityWidth */
/* instead of : */
/* "width", GST_TYPE_INT_RANGE, video_default->minWidth, video_default->maxWidth */
/* For framerate we do not need a step (granularity) because */
/* "The IAMStreamConfig::SetFormat method will set the frame rate to the closest */
/* value that the filter supports" as it said in the VIDEO_STREAM_CONFIG_CAPS dshwo doc */
/* I420 */
if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_I420, FORMAT_VideoInfo)) {
mediacaps = gst_dshow_new_video_caps (GST_VIDEO_FORMAT_I420, NULL, &vscc,
(VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat, video_default);
if (mediacaps) {
src->pins_mediatypes =
g_list_append (src->pins_mediatypes, pin_mediatype);
src->video_defaults =
g_list_append (src->video_defaults, video_default);
gst_caps_append (caps, mediacaps);
} else {
gst_dshow_free_pin_mediatype (pin_mediatype);
g_free (video_default);
}
continue;
}
/* BGR */
if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_RGB24, FORMAT_VideoInfo)) {
} else if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_RGB24, FORMAT_VideoInfo)) {
mediacaps = gst_dshow_new_video_caps (GST_VIDEO_FORMAT_BGR, NULL, &vscc,
(VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat, video_default);
if (mediacaps) {
src->pins_mediatypes =
g_list_append (src->pins_mediatypes, pin_mediatype);
src->video_defaults =
g_list_append (src->video_defaults, video_default);
gst_caps_append (caps, mediacaps);
} else {
gst_dshow_free_pin_mediatype (pin_mediatype);
g_free (video_default);
}
continue;
}
/* DVSD */
if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_dvsd, FORMAT_VideoInfo)) {
} else if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_dvsd, FORMAT_VideoInfo)) {
mediacaps = gst_dshow_new_video_caps (GST_VIDEO_FORMAT_UNKNOWN,
"video/x-dv, systemstream=FALSE", &vscc, (VIDEOINFOHEADER *)
pin_mediatype->mediatype->pbFormat, video_default);
if (mediacaps) {
src->pins_mediatypes =
g_list_append (src->pins_mediatypes, pin_mediatype);
src->video_defaults =
g_list_append (src->video_defaults, video_default);
gst_caps_append (caps, mediacaps);
} else {
gst_dshow_free_pin_mediatype (pin_mediatype);
g_free (video_default);
}
continue;
}
/* DV stream */
if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_dvsd, FORMAT_DvInfo)) {
video_info = (VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat;
} else if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_dvsd, FORMAT_DvInfo)) {
video_default->granularityWidth = 0;
video_default->granularityHeight = 0;
@ -990,22 +932,19 @@ gst_dshowvideosrc_getcaps_from_streamcaps (GstDshowVideoSrc * src, IPin * pin,
mediacaps = gst_dshow_new_video_caps (GST_VIDEO_FORMAT_UNKNOWN,
"video/x-dv, systemstream=TRUE", &vscc, (VIDEOINFOHEADER *)
pin_mediatype->mediatype->pbFormat, video_default);
if (mediacaps) {
src->pins_mediatypes =
g_list_append (src->pins_mediatypes, pin_mediatype);
src->video_defaults =
g_list_append (src->video_defaults, video_default);
gst_caps_append (caps, mediacaps);
} else {
gst_dshow_free_pin_mediatype (pin_mediatype);
g_free (video_default);
}
continue;
}
} else {
gst_dshow_free_pin_mediatype (pin_mediatype);
g_free (video_default);
if (mediacaps) {
src->pins_mediatypes =
g_list_append (src->pins_mediatypes, pin_mediatype);
src->video_defaults =
g_list_append (src->video_defaults, video_default);
gst_caps_append (caps, mediacaps);
} else {
gst_dshow_free_pin_mediatype (pin_mediatype);
g_free (video_default);
}
}
}