static gboolean
gst_xviddec_setcaps (GstPad * pad, GstCaps * caps)
{
GstXvidDec *dec = GST_XVIDDEC (GST_PAD_PARENT (pad));
GstStructure *structure;
GstCaps *allowed_caps;
const GValue *val;
GST_LOG_OBJECT (dec, "caps %" GST_PTR_FORMAT, caps);
/* if there's something old around, remove it */
if (dec->handle) {
gst_xviddec_unset (dec);
}
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &dec->width);
gst_structure_get_int (structure, "height", &dec->height);
/* perhaps some fps info */
val = gst_structure_get_value (structure, "framerate");
if ((val != NULL) && GST_VALUE_HOLDS_FRACTION (val)) {
dec->fps_n = gst_value_get_fraction_numerator (val);
dec->fps_d = gst_value_get_fraction_denominator (val);
} else {
dec->fps_n = -1;
dec->fps_d = 1;
}
/* perhaps some par info */
val = gst_structure_get_value (structure, "pixel-aspect-ratio");
if (val != NULL && GST_VALUE_HOLDS_FRACTION (val)) {
dec->par_n = gst_value_get_fraction_numerator (val);
dec->par_d = gst_value_get_fraction_denominator (val);
} else {
dec->par_n = 1;
dec->par_d = 1;
}
/* we try to find the preferred/accept csp */
allowed_caps = gst_pad_get_allowed_caps (dec->srcpad);
if (!allowed_caps) {
GST_DEBUG_OBJECT (dec, "... but no peer, using template caps");
/* need to copy because get_allowed_caps returns a ref,
and get_pad_template_caps doesn't */
allowed_caps = gst_caps_copy (gst_pad_get_pad_template_caps (dec->srcpad));
}
GST_LOG_OBJECT (dec, "allowed source caps %" GST_PTR_FORMAT, allowed_caps);
/* pick the first one ... */
structure = gst_caps_get_structure (allowed_caps, 0);
val = gst_structure_get_value (structure, "format");
if (val != NULL && G_VALUE_TYPE (val) == GST_TYPE_LIST) {
GValue temp = { 0, };
gst_value_init_and_copy (&temp, gst_value_list_get_value (val, 0));
gst_structure_set_value (structure, "format", &temp);
g_value_unset (&temp);
}
/* ... and use its info to get the csp */
dec->csp = gst_xvid_structure_to_csp (structure);
if (dec->csp == -1) {
GST_WARNING_OBJECT (dec, "failed to decide on colorspace, using I420");
dec->csp = XVID_CSP_I420;
}
dec->outbuf_size =
gst_xvid_image_get_size (dec->csp, dec->width, dec->height);
GST_LOG_OBJECT (dec, "csp=%d, outbuf_size=%d", dec->csp, dec->outbuf_size);
gst_caps_unref (allowed_caps);
/* now set up xvid ... */
if (!gst_xviddec_setup (dec)) {
GST_ELEMENT_ERROR (GST_ELEMENT (dec), LIBRARY, INIT, (NULL), (NULL));
return FALSE;
}
return gst_xviddec_negotiate (dec, NULL);
}
static gboolean
gst_xvidenc_setcaps (GstPad * pad, GstCaps * vscaps)
{
GstXvidEnc *xvidenc;
GstStructure *structure;
gint w, h;
const GValue *fps, *par;
gint xvid_cs = -1;
xvidenc = GST_XVIDENC (GST_PAD_PARENT (pad));
/* if there's something old around, remove it */
if (xvidenc->handle) {
gst_xvidenc_flush_buffers (xvidenc, TRUE);
xvid_encore (xvidenc->handle, XVID_ENC_DESTROY, NULL, NULL);
xvidenc->handle = NULL;
}
structure = gst_caps_get_structure (vscaps, 0);
if (!gst_structure_get_int (structure, "width", &w) ||
!gst_structure_get_int (structure, "height", &h)) {
return FALSE;
}
fps = gst_structure_get_value (structure, "framerate");
if (fps == NULL || !GST_VALUE_HOLDS_FRACTION (fps)) {
GST_WARNING_OBJECT (pad, "no framerate specified, or not a GstFraction");
return FALSE;
}
/* optional par info */
par = gst_structure_get_value (structure, "pixel-aspect-ratio");
xvid_cs = gst_xvid_structure_to_csp (structure);
if (xvid_cs == -1) {
gchar *sstr;
sstr = gst_structure_to_string (structure);
GST_DEBUG_OBJECT (xvidenc, "Did not find xvid colourspace for caps %s",
sstr);
g_free (sstr);
return FALSE;
}
xvidenc->csp = xvid_cs;
xvidenc->width = w;
xvidenc->height = h;
xvidenc->fbase = gst_value_get_fraction_numerator (fps);
xvidenc->fincr = gst_value_get_fraction_denominator (fps);
if ((par != NULL) && GST_VALUE_HOLDS_FRACTION (par)) {
xvidenc->par_width = gst_value_get_fraction_numerator (par);
xvidenc->par_height = gst_value_get_fraction_denominator (par);
} else {
xvidenc->par_width = 1;
xvidenc->par_height = 1;
}
/* wipe xframe cache given possible change caps properties */
g_free (xvidenc->xframe_cache);
xvidenc->xframe_cache = NULL;
if (gst_xvidenc_setup (xvidenc)) {
gboolean ret = FALSE;
GstCaps *new_caps = NULL, *allowed_caps;
/* please downstream with preferred caps */
allowed_caps = gst_pad_get_allowed_caps (xvidenc->srcpad);
GST_DEBUG_OBJECT (xvidenc, "allowed caps: %" GST_PTR_FORMAT, allowed_caps);
if (allowed_caps && !gst_caps_is_empty (allowed_caps)) {
new_caps = gst_caps_copy_nth (allowed_caps, 0);
} else {
new_caps = gst_caps_new_simple ("video/x-xvid", NULL);
}
if (allowed_caps)
gst_caps_unref (allowed_caps);
gst_caps_set_simple (new_caps,
"width", G_TYPE_INT, w, "height", G_TYPE_INT, h,
"framerate", GST_TYPE_FRACTION, xvidenc->fbase, xvidenc->fincr,
"pixel-aspect-ratio", GST_TYPE_FRACTION,
xvidenc->par_width, xvidenc->par_height, NULL);
/* just to be sure */
gst_pad_fixate_caps (xvidenc->srcpad, new_caps);
if (xvidenc->used_profile != 0) {
switch (xvidenc->used_profile) {
case XVID_PROFILE_S_L0:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING, "simple",
"level", G_TYPE_STRING, "0", NULL);
break;
case XVID_PROFILE_S_L1:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING, "simple",
"level", G_TYPE_STRING, "1", NULL);
break;
case XVID_PROFILE_S_L2:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING, "simple",
"level", G_TYPE_STRING, "2", NULL);
break;
case XVID_PROFILE_S_L3:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING, "simple",
"level", G_TYPE_STRING, "3", NULL);
break;
/* case XVID_PROFILE_S_L4a:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING, "simple",
"level", G_TYPE_STRING, "4a", NULL);
break;
case XVID_PROFILE_S_L5:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING, "simple",
"level", G_TYPE_STRING, "5", NULL);
break;
case XVID_PROFILE_S_L6:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING, "simple",
"level", G_TYPE_STRING, "6", NULL);
break;*/
case XVID_PROFILE_ARTS_L1:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING,
"advanced-real-time-simple", "level", G_TYPE_STRING, "1", NULL);
break;
case XVID_PROFILE_ARTS_L2:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING,
"advanced-real-time-simple", "level", G_TYPE_STRING, "2", NULL);
break;
case XVID_PROFILE_ARTS_L3:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING,
"advanced-real-time-simple", "level", G_TYPE_STRING, "3", NULL);
break;
case XVID_PROFILE_ARTS_L4:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING,
"advanced-real-time-simple", "level", G_TYPE_STRING, "4", NULL);
break;
case XVID_PROFILE_AS_L0:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING,
"advanced-simple", "level", G_TYPE_STRING, "0", NULL);
break;
case XVID_PROFILE_AS_L1:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING,
"advanced-simple", "level", G_TYPE_STRING, "1", NULL);
break;
case XVID_PROFILE_AS_L2:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING,
"advanced-simple", "level", G_TYPE_STRING, "2", NULL);
break;
case XVID_PROFILE_AS_L3:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING,
"advanced-simple", "level", G_TYPE_STRING, "3", NULL);
break;
case XVID_PROFILE_AS_L4:
gst_caps_set_simple (new_caps, "profile", G_TYPE_STRING,
"advanced-simple", "level", G_TYPE_STRING, "4", NULL);
break;
default:
g_assert_not_reached ();
break;
}
}
/* src pad should accept anyway */
ret = gst_pad_set_caps (xvidenc->srcpad, new_caps);
gst_caps_unref (new_caps);
if (!ret && xvidenc->handle) {
xvid_encore (xvidenc->handle, XVID_ENC_DESTROY, NULL, NULL);
xvidenc->handle = NULL;
}
return ret;
} else /* setup did not work out */
return FALSE;
}