Commit 83c34503 authored by Matthew Waters's avatar Matthew Waters 🐨

glmixer: advertise support for changing input caps mid-stream

https://bugzilla.gnome.org/show_bug.cgi?id=739334
parent 2bf4a941
......@@ -287,6 +287,98 @@ gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
return ret;
}
static GstCaps *
gst_gl_mixer_set_caps_features (const GstCaps * caps,
const gchar * feature_name)
{
GstCaps *tmp = gst_caps_copy (caps);
guint n = gst_caps_get_size (tmp);
guint i = 0;
for (i = 0; i < n; i++) {
GstCapsFeatures *features = gst_caps_get_features (tmp, i);
if (features) {
guint n_f = gst_caps_features_get_size (features);
guint j = 0;
for (j = 0; j < n_f; j++) {
gst_caps_features_remove_id (features,
gst_caps_features_get_nth_id (features, j));
}
}
gst_caps_features_add (features, feature_name);
gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
}
return tmp;
}
/* copies the given caps */
static GstCaps *
gst_gl_mixer_caps_remove_format_info (GstCaps * caps)
{
GstStructure *st;
GstCapsFeatures *f;
gint i, n;
GstCaps *res;
res = gst_caps_new_empty ();
n = gst_caps_get_size (caps);
for (i = 0; i < n; i++) {
st = gst_caps_get_structure (caps, i);
f = gst_caps_get_features (caps, i);
/* If this is already expressed by the existing caps
* skip this structure */
if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
continue;
st = gst_structure_copy (st);
/* Only remove format info for the cases when we can actually convert */
if (!gst_caps_features_is_any (f)
&& gst_caps_features_is_equal (f,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
"width", "height", NULL);
gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
}
return res;
}
GstCaps *
gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
{
GstCaps *result = NULL;
GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps,
GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
#if GST_GL_HAVE_PLATFORM_EGL
GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps,
GST_CAPS_FEATURE_MEMORY_EGL_IMAGE);
#endif
GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps,
GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META);
GstCaps *raw_caps =
gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS));
result = gst_caps_new_empty ();
result = gst_caps_merge (result, glcaps);
#if GST_GL_HAVE_PLATFORM_EGL
result = gst_caps_merge (result, eglcaps);
#endif
result = gst_caps_merge (result, uploadcaps);
result = gst_caps_merge (result, raw_caps);
result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps));
GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result);
return result;
}
static GstCaps *
gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
{
......@@ -302,6 +394,8 @@ gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
if (srccaps == NULL) {
had_current_caps = FALSE;
srccaps = template_caps;
} else {
srccaps = gst_caps_merge (srccaps, gst_gl_mixer_update_caps (mix, srccaps));
}
filtered_caps = srccaps;
......@@ -309,12 +403,13 @@ gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
filtered_caps = gst_caps_intersect (srccaps, filter);
returned_caps = gst_caps_intersect (filtered_caps, template_caps);
gst_caps_unref (srccaps);
if (filter)
gst_caps_unref (filtered_caps);
if (had_current_caps)
gst_caps_unref (template_caps);
GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps);
return returned_caps;
}
......@@ -590,98 +685,6 @@ gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
return result;
}
static GstCaps *
gst_gl_mixer_set_caps_features (const GstCaps * caps,
const gchar * feature_name)
{
GstCaps *tmp = gst_caps_copy (caps);
guint n = gst_caps_get_size (tmp);
guint i = 0;
for (i = 0; i < n; i++) {
GstCapsFeatures *features = gst_caps_get_features (tmp, i);
if (features) {
guint n_f = gst_caps_features_get_size (features);
guint j = 0;
for (j = 0; j < n_f; j++) {
gst_caps_features_remove_id (features,
gst_caps_features_get_nth_id (features, j));
}
}
gst_caps_features_add (features, feature_name);
gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
}
return tmp;
}
/* copies the given caps */
static GstCaps *
gst_gl_mixer_caps_remove_format_info (GstCaps * caps)
{
GstStructure *st;
GstCapsFeatures *f;
gint i, n;
GstCaps *res;
res = gst_caps_new_empty ();
n = gst_caps_get_size (caps);
for (i = 0; i < n; i++) {
st = gst_caps_get_structure (caps, i);
f = gst_caps_get_features (caps, i);
/* If this is already expressed by the existing caps
* skip this structure */
if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
continue;
st = gst_structure_copy (st);
/* Only remove format info for the cases when we can actually convert */
if (!gst_caps_features_is_any (f)
&& gst_caps_features_is_equal (f,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
"width", "height", NULL);
gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
}
return res;
}
GstCaps *
gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
{
GstCaps *result = NULL;
GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps,
GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
#if GST_GL_HAVE_PLATFORM_EGL
GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps,
GST_CAPS_FEATURE_MEMORY_EGL_IMAGE);
#endif
GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps,
GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META);
GstCaps *raw_caps =
gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS));
result = gst_caps_new_empty ();
result = gst_caps_merge (result, glcaps);
#if GST_GL_HAVE_PLATFORM_EGL
result = gst_caps_merge (result, eglcaps);
#endif
result = gst_caps_merge (result, uploadcaps);
result = gst_caps_merge (result, raw_caps);
result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps));
GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result);
return result;
}
static gboolean
gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
{
......
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