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gstffmpegenc: Make getcaps proxy the downstream height/width/framerate requirements

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See #577784.
This commit is contained in:
Olivier Crête 2009-03-06 13:47:05 -05:00 committed by Mark Nauwelaerts
parent 2b891aff61
commit 83820511a8
1 changed files with 69 additions and 3 deletions
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72
ext/ffmpeg/gstffmpegenc.c
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@ -306,6 +306,67 @@ gst_ffmpegenc_finalize (GObject * object)
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstCaps *
gst_ffmpegenc_get_possible_sizes (GstFFMpegEnc * ffmpegenc, GstPad * pad,
const GstCaps * caps)
{
GstCaps *othercaps = NULL;
GstCaps *tmpcaps = NULL;
GstCaps *intersect = NULL;
guint i;
othercaps = gst_pad_peer_get_caps (ffmpegenc->srcpad);
if (!othercaps)
return gst_caps_copy (caps);
intersect = gst_caps_intersect (othercaps,
gst_pad_get_pad_template_caps (ffmpegenc->srcpad));
gst_caps_unref (othercaps);
if (gst_caps_is_empty (intersect))
return intersect;
if (gst_caps_is_any (intersect))
return gst_caps_copy (caps);
tmpcaps = gst_caps_new_empty ();
for (i = 0; i < gst_caps_get_size (intersect); i++) {
GstStructure *s = gst_caps_get_structure (intersect, i);
const GValue *height = NULL;
const GValue *width = NULL;
const GValue *framerate = NULL;
GstStructure *tmps;
height = gst_structure_get_value (s, "height");
width = gst_structure_get_value (s, "width");
framerate = gst_structure_get_value (s, "framerate");
tmps = gst_structure_new ("video/x-raw-rgb", NULL);
if (width)
gst_structure_set_value (tmps, "width", width);
if (height)
gst_structure_set_value (tmps, "height", height);
if (framerate)
gst_structure_set_value (tmps, "framerate", framerate);
gst_caps_merge_structure (tmpcaps, gst_structure_copy (tmps));
gst_structure_set_name (tmps, "video/x-raw-yuv");
gst_caps_merge_structure (tmpcaps, gst_structure_copy (tmps));
gst_structure_set_name (tmps, "video/x-raw-gray");
gst_caps_merge_structure (tmpcaps, tmps);
}
gst_caps_unref (intersect);
intersect = gst_caps_intersect (caps, tmpcaps);
gst_caps_unref (tmpcaps);
return intersect;
}
static GstCaps *
gst_ffmpegenc_getcaps (GstPad * pad)
{
@ -315,6 +376,7 @@ gst_ffmpegenc_getcaps (GstPad * pad)
AVCodecContext *ctx = NULL;
enum PixelFormat pixfmt;
GstCaps *caps = NULL;
GstCaps *finalcaps = NULL;
gint i;
GST_DEBUG_OBJECT (ffmpegenc, "getting caps");
@ -331,7 +393,7 @@ gst_ffmpegenc_getcaps (GstPad * pad)
/* cached */
if (oclass->sinkcaps) {
caps = gst_caps_copy (oclass->sinkcaps);
caps = gst_ffmpegenc_get_possible_sizes (ffmpegenc, pad, oclass->sinkcaps);
GST_DEBUG_OBJECT (ffmpegenc, "return cached caps %" GST_PTR_FORMAT, caps);
return caps;
}
@ -430,7 +492,8 @@ gst_ffmpegenc_getcaps (GstPad * pad)
/* make sure we have something */
if (!caps) {
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
caps = gst_ffmpegenc_get_possible_sizes (ffmpegenc, pad,
gst_pad_get_pad_template_caps (pad));
GST_DEBUG_OBJECT (ffmpegenc, "probing gave nothing, "
"return template %" GST_PTR_FORMAT, caps);
return caps;
@ -439,7 +502,10 @@ gst_ffmpegenc_getcaps (GstPad * pad)
GST_DEBUG_OBJECT (ffmpegenc, "probed caps gave %" GST_PTR_FORMAT, caps);
oclass->sinkcaps = gst_caps_copy (caps);
return caps;
finalcaps = gst_ffmpegenc_get_possible_sizes (ffmpegenc, pad, caps);
gst_caps_unref (caps);
return finalcaps;
}
static gboolean