void
_priv_gst_caps_features_cleanup (void)
{
gst_caps_features_set_parent_refcount (_gst_caps_features_any, NULL);
gst_caps_features_free (_gst_caps_features_any);
_gst_caps_features_any = NULL;
gst_caps_features_set_parent_refcount
(_gst_caps_features_memory_system_memory, NULL);
gst_caps_features_free (_gst_caps_features_memory_system_memory);
_gst_caps_features_memory_system_memory = NULL;
}
static void
_init_upload (GstGLStereoSplit * split)
{
GstGLContext *context = split->context;
if (!split->upload) {
GstCaps *in_caps = gst_pad_get_current_caps (GST_PAD (split->sink_pad));
GstCaps *split_caps = gst_pad_get_current_caps (split->left_pad);
GstCaps *upload_caps = gst_caps_copy (in_caps);
GstCapsFeatures *gl_features =
gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
GstCaps *gl_caps;
split->upload = gst_gl_upload_new (context);
gst_caps_set_features (upload_caps, 0,
gst_caps_features_copy (gl_features));
gst_gl_upload_set_caps (split->upload, in_caps, upload_caps);
gst_caps_unref (in_caps);
gl_caps = gst_caps_copy (upload_caps);
gst_caps_set_simple (gl_caps, "format", G_TYPE_STRING, "RGBA", NULL);
gst_caps_set_features (gl_caps, 0, gst_caps_features_copy (gl_features));
if (!split->convert) {
split->convert = gst_gl_color_convert_new (context);
gst_gl_color_convert_set_caps (split->convert, upload_caps, gl_caps);
}
gst_caps_unref (upload_caps);
gst_caps_features_free (gl_features);
gst_gl_view_convert_set_context (split->viewconvert, split->context);
split_caps = gst_caps_make_writable (split_caps);
gst_caps_set_simple (split_caps, "multiview-mode", G_TYPE_STRING,
"separated", "views", G_TYPE_INT, 2, NULL);
gst_gl_view_convert_set_caps (split->viewconvert, gl_caps, split_caps);
gst_caps_unref (split_caps);
gst_caps_unref (gl_caps);
}
}
static gboolean
gst_vtdec_negotiate_output_format (GstVtdec * vtdec,
GstVideoCodecState * input_state)
{
GstCaps *caps = NULL, *peercaps = NULL, *templcaps;
GstVideoFormat output_format;
GstVideoCodecState *output_state = NULL;
GstCapsFeatures *features;
GstStructure *structure;
const gchar *s;
peercaps = gst_pad_peer_query_caps (GST_VIDEO_DECODER_SRC_PAD (vtdec), NULL);
/* Check if output supports GL caps by preference */
templcaps = gst_pad_get_pad_template_caps (GST_VIDEO_DECODER_SRC_PAD (vtdec));
caps =
gst_caps_intersect_full (templcaps, peercaps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
gst_caps_unref (templcaps);
caps = gst_caps_truncate (caps);
structure = gst_caps_get_structure (caps, 0);
s = gst_structure_get_string (structure, "format");
output_format = gst_video_format_from_string (s);
features = gst_caps_features_copy (gst_caps_get_features (caps, 0));
gst_caps_unref (caps);
if (!gst_vtdec_create_session (vtdec, output_format)) {
gst_caps_features_free (features);
return FALSE;
}
output_state = gst_video_decoder_set_output_state (GST_VIDEO_DECODER (vtdec),
output_format, vtdec->video_info.width, vtdec->video_info.height,
input_state);
output_state->caps = gst_video_info_to_caps (&output_state->info);
gst_caps_set_features (output_state->caps, 0, features);
return TRUE;
}
/**
* gst_caps_features_from_string:
* @features: a string representation of a #GstCapsFeatures.
*
* Creates a #GstCapsFeatures from a string representation.
*
* Free-function: gst_caps_features_free
*
* Returns: (transfer full): a new #GstCapsFeatures or NULL when the string could
* not be parsed. Free with gst_caps_features_free() after use.
*
* Since: 1.2
*/
GstCapsFeatures *
gst_caps_features_from_string (const gchar * features)
{
GstCapsFeatures *ret;
gboolean escape = FALSE;
const gchar *features_orig = features;
const gchar *feature;
ret = gst_caps_features_new_empty ();
if (!features || *features == '\0')
return ret;
if (strcmp (features, "ANY") == 0) {
ret->is_any = TRUE;
return ret;
}
/* Skip trailing spaces */
while (*features == ' ')
features++;
feature = features;
while (TRUE) {
gchar c = *features;
if (c == '\\') {
escape = TRUE;
features++;
continue;
} else if ((!escape && c == ',') || c == '\0') {
guint len = features - feature + 1;
gchar *tmp;
gchar *p;
if (len == 1) {
g_warning ("Failed deserialize caps features '%s'", features_orig);
gst_caps_features_free (ret);
return NULL;
}
tmp = g_malloc (len);
memcpy (tmp, feature, len - 1);
tmp[len - 1] = '\0';
p = tmp + len - 1;
while (*p == ' ') {
*p = '\0';
p--;
}
if (strstr (tmp, " ") != NULL || *tmp == '\0') {
g_free (tmp);
g_warning ("Failed deserialize caps features '%s'", features_orig);
gst_caps_features_free (ret);
return NULL;
}
gst_caps_features_add (ret, tmp);
g_free (tmp);
if (c == '\0')
break;
/* Skip to the next value */
features++;
while (*features == ' ')
features++;
feature = features;
} else {
escape = FALSE;
features++;
}
}
return ret;
}
static GstBuffer *
_default_pad_upload_buffer (GstGLMixer * mix, GstGLMixerFrameData * frame,
GstBuffer * buffer)
{
GstVideoAggregatorPad *vaggpad = GST_VIDEO_AGGREGATOR_PAD (frame->pad);
GstGLMixerPad *pad = frame->pad;
GstBuffer *uploaded_buf, *gl_buffer;
GstCaps *gl_caps;
GstCapsFeatures *gl_features;
GstVideoInfo gl_info;
GstVideoFrame gl_frame;
GstGLSyncMeta *sync_meta;
gst_video_info_set_format (&gl_info,
GST_VIDEO_FORMAT_RGBA,
GST_VIDEO_INFO_WIDTH (&vaggpad->info),
GST_VIDEO_INFO_HEIGHT (&vaggpad->info));
gl_features =
gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
gl_caps = gst_video_info_to_caps (&gl_info);
gst_caps_set_features (gl_caps, 0, gst_caps_features_copy (gl_features));
if (!pad->upload) {
GstCaps *in_caps = gst_pad_get_current_caps (GST_PAD (pad));
GstCaps *upload_caps = gst_caps_copy (in_caps);
pad->upload = gst_gl_upload_new (mix->context);
gst_caps_set_features (upload_caps, 0,
gst_caps_features_copy (gl_features));
gst_gl_upload_set_caps (pad->upload, in_caps, upload_caps);
if (!pad->convert) {
pad->convert = gst_gl_color_convert_new (mix->context);
gst_gl_color_convert_set_caps (pad->convert, upload_caps, gl_caps);
}
gst_caps_unref (upload_caps);
gst_caps_unref (in_caps);
}
gst_caps_features_free (gl_features);
gst_caps_unref (gl_caps);
sync_meta = gst_buffer_get_gl_sync_meta (vaggpad->buffer);
if (sync_meta)
gst_gl_sync_meta_wait (sync_meta);
if (gst_gl_upload_perform_with_buffer (pad->upload,
vaggpad->buffer, &uploaded_buf) != GST_GL_UPLOAD_DONE) {
return NULL;
}
if (!(gl_buffer = gst_gl_color_convert_perform (pad->convert, uploaded_buf))) {
gst_buffer_unref (uploaded_buf);
return NULL;
}
if (!gst_video_frame_map (&gl_frame, &gl_info, gl_buffer,
GST_MAP_READ | GST_MAP_GL)) {
gst_buffer_unref (uploaded_buf);
gst_buffer_unref (gl_buffer);
return NULL;
}
frame->texture = *(guint *) gl_frame.data[0];
gst_buffer_unref (uploaded_buf);
gst_video_frame_unmap (&gl_frame);
return gl_buffer;
}