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glmixer: advertise support for changing input caps mid-stream
https://bugzilla.gnome.org/show_bug.cgi?id=739334
This commit is contained in:
Matthew Waters
Tim-Philipp Müller
parent
35e9b5ab8b
commit
b06ca547d6
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@ -287,6 +287,98 @@ gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
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return ret;
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}
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static GstCaps *
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gst_gl_mixer_set_caps_features (const GstCaps * caps,
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const gchar * feature_name)
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{
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GstCaps *tmp = gst_caps_copy (caps);
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guint n = gst_caps_get_size (tmp);
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guint i = 0;
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for (i = 0; i < n; i++) {
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GstCapsFeatures *features = gst_caps_get_features (tmp, i);
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if (features) {
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guint n_f = gst_caps_features_get_size (features);
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guint j = 0;
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for (j = 0; j < n_f; j++) {
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gst_caps_features_remove_id (features,
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gst_caps_features_get_nth_id (features, j));
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}
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}
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gst_caps_features_add (features, feature_name);
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gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
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}
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return tmp;
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}
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/* copies the given caps */
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static GstCaps *
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gst_gl_mixer_caps_remove_format_info (GstCaps * caps)
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{
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GstStructure *st;
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GstCapsFeatures *f;
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gint i, n;
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GstCaps *res;
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res = gst_caps_new_empty ();
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n = gst_caps_get_size (caps);
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for (i = 0; i < n; i++) {
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st = gst_caps_get_structure (caps, i);
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f = gst_caps_get_features (caps, i);
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/* If this is already expressed by the existing caps
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* skip this structure */
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if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
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continue;
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st = gst_structure_copy (st);
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/* Only remove format info for the cases when we can actually convert */
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if (!gst_caps_features_is_any (f)
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&& gst_caps_features_is_equal (f,
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GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
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gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
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"width", "height", NULL);
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gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
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}
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return res;
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}
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GstCaps *
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gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
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{
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GstCaps *result = NULL;
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GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps,
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GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
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#if GST_GL_HAVE_PLATFORM_EGL
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GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps,
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GST_CAPS_FEATURE_MEMORY_EGL_IMAGE);
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#endif
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GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps,
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GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META);
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GstCaps *raw_caps =
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gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS));
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result = gst_caps_new_empty ();
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result = gst_caps_merge (result, glcaps);
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#if GST_GL_HAVE_PLATFORM_EGL
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result = gst_caps_merge (result, eglcaps);
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#endif
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result = gst_caps_merge (result, uploadcaps);
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result = gst_caps_merge (result, raw_caps);
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result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps));
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GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result);
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return result;
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}
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static GstCaps *
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gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
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{
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@ -302,6 +394,8 @@ gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
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if (srccaps == NULL) {
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had_current_caps = FALSE;
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srccaps = template_caps;
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} else {
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srccaps = gst_caps_merge (srccaps, gst_gl_mixer_update_caps (mix, srccaps));
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}
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filtered_caps = srccaps;
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@ -309,12 +403,13 @@ gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
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filtered_caps = gst_caps_intersect (srccaps, filter);
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returned_caps = gst_caps_intersect (filtered_caps, template_caps);
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gst_caps_unref (srccaps);
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if (filter)
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gst_caps_unref (filtered_caps);
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if (had_current_caps)
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gst_caps_unref (template_caps);
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GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps);
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return returned_caps;
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}
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@ -590,98 +685,6 @@ gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
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return result;
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}
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static GstCaps *
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gst_gl_mixer_set_caps_features (const GstCaps * caps,
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const gchar * feature_name)
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{
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GstCaps *tmp = gst_caps_copy (caps);
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guint n = gst_caps_get_size (tmp);
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guint i = 0;
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for (i = 0; i < n; i++) {
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GstCapsFeatures *features = gst_caps_get_features (tmp, i);
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if (features) {
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guint n_f = gst_caps_features_get_size (features);
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guint j = 0;
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for (j = 0; j < n_f; j++) {
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gst_caps_features_remove_id (features,
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gst_caps_features_get_nth_id (features, j));
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}
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}
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gst_caps_features_add (features, feature_name);
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gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
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}
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return tmp;
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}
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/* copies the given caps */
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static GstCaps *
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gst_gl_mixer_caps_remove_format_info (GstCaps * caps)
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{
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GstStructure *st;
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GstCapsFeatures *f;
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gint i, n;
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GstCaps *res;
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res = gst_caps_new_empty ();
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n = gst_caps_get_size (caps);
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for (i = 0; i < n; i++) {
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st = gst_caps_get_structure (caps, i);
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f = gst_caps_get_features (caps, i);
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/* If this is already expressed by the existing caps
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* skip this structure */
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if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
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continue;
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st = gst_structure_copy (st);
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/* Only remove format info for the cases when we can actually convert */
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if (!gst_caps_features_is_any (f)
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&& gst_caps_features_is_equal (f,
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GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
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gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
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"width", "height", NULL);
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gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
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}
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return res;
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}
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GstCaps *
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gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
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{
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GstCaps *result = NULL;
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GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps,
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GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
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#if GST_GL_HAVE_PLATFORM_EGL
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GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps,
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GST_CAPS_FEATURE_MEMORY_EGL_IMAGE);
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#endif
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GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps,
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GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META);
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GstCaps *raw_caps =
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gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS));
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result = gst_caps_new_empty ();
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result = gst_caps_merge (result, glcaps);
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#if GST_GL_HAVE_PLATFORM_EGL
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result = gst_caps_merge (result, eglcaps);
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#endif
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result = gst_caps_merge (result, uploadcaps);
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result = gst_caps_merge (result, raw_caps);
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result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps));
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GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result);
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return result;
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}
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static gboolean
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gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
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{
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