vaapidecode: don't reset decoder if codec type is the same.

Reset, i.e. destroy then create, the decoder in _setcaps() handler only
if the underlying codec type actually changed. This makes it possible
to be more tolerant with certain MPEG-2 streams that get parsed to
form caps that are compatible with the previous state but minor changes
to "codec-data".

2 files changed, 19 insertions, 0 deletions

diff --git a/gst-libs/gst/vaapi/gstvaapidecoder.c b/gst-libs/gst/vaapi/gstvaapidecoder.c
index c63bb149..d2ee86cb 100644
--- a/gst-libs/gst/vaapi/gstvaapidecoder.c
+++ b/gst-libs/gst/vaapi/gstvaapidecoder.c
@@ -362,6 +362,22 @@ gst_vaapi_decoder_init(GstVaapiDecoder *decoder)
 }
 
 /**
+ * gst_vaapi_decoder_get_codec:
+ * @decoder: a #GstVaapiDecoder
+ *
+ * Retrieves the @decoder codec type.
+ *
+ * Return value: the #GstVaapiCodec type for @decoder
+ */
+GstVaapiCodec
+gst_vaapi_decoder_get_codec(GstVaapiDecoder *decoder)
+{
+    g_return_val_if_fail(GST_VAAPI_IS_DECODER(decoder), (GstVaapiCodec)0);
+
+    return decoder->priv->codec;
+}
+
+/**
  * gst_vaapi_decoder_get_caps:
  * @decoder: a #GstVaapiDecoder
  *
diff --git a/gst-libs/gst/vaapi/gstvaapidecoder.h b/gst-libs/gst/vaapi/gstvaapidecoder.h
index deeb6926..b5a397bd 100644
--- a/gst-libs/gst/vaapi/gstvaapidecoder.h
+++ b/gst-libs/gst/vaapi/gstvaapidecoder.h
@@ -116,6 +116,9 @@ struct _GstVaapiDecoderClass {
 GType
 gst_vaapi_decoder_get_type(void) G_GNUC_CONST;
 
+GstVaapiCodec
+gst_vaapi_decoder_get_codec(GstVaapiDecoder *decoder);
+
 GstCaps *
 gst_vaapi_decoder_get_caps(GstVaapiDecoder *decoder);