C++ (Cpp) gst_gl_upload_set_capsの例

コード例 #1

ファイル: gstglstereosplit.c プロジェクト: asrashley/gst-plugins-bad

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);
  }
}

コード例 #2

ファイル: gstglmixer.c プロジェクト: ego5710/gst-plugins-bad

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;
}