Pass DMAI transport buffers directly to encoder.

If the input buffer is a DMAI transport buffer, we know it is already in
physically contiguous CMEM memory, and can be passed directly to the encoder
without a copy (on all platforms).

git-svn-id: https://gstreamer.ti.com/svn/gstreamer_ti/trunk@871 24075187-2e39-4e88-bbb8-bc8aa768f540

1 files changed, 14 insertions, 4 deletions

diff --git a/gstreamer_ti/ti_build/ticodecplugin/src/gsttividenc1.c b/gstreamer_ti/ti_build/ticodecplugin/src/gsttividenc1.c
index f8d8eff..4cb874f 100644
--- a/gstreamer_ti/ti_build/ticodecplugin/src/gsttividenc1.c
+++ b/gstreamer_ti/ti_build/ticodecplugin/src/gsttividenc1.c
@@ -1577,11 +1577,21 @@ gst_tividenc1_encode(GstTIVidenc1 *videnc1, GstBuffer *inBuf,
     /* Get the time stamp from the input buffer */
     encDataTime = GST_BUFFER_TIMESTAMP(inBuf);
 
-    /* If zero-copy encode is enabled, we can pass the input buffer directly
-     * to the encoder without a copy.  Otherwise, copy the input buffer into
-     * our physically contiguous buffer for the codec.
+    /* Prepare the codec input buffer (hContigInBuf):
+     * 1)  If the input buffer is a physically contiguous DMAI buffer, it can
+     *     be passed directly to the codec.
+     * 2)  If zeroCopyEncode is TRUE, we have a non-DMAI buffer that can still
+     *     be used directly by the codec.  Wrap it in a DMAI buffer reference
+     *     so it can be passed to Venc1_process.
+     * 3)  If the above scenarios don't apply, copy the buffer contents into
+     *     our local physically contiguous DMAI buffer and pass it to the
+     *     codec.  The gst_tividenc1_copy_input function will copy using
+     *     hardware acceleration if possible.
      */
-    if (videnc1->zeroCopyEncode) {
+    if (GST_IS_TIDMAIBUFFERTRANSPORT(inBuf)) {
+        hContigInBuf = GST_TIDMAIBUFFERTRANSPORT_DMAIBUF(inBuf);
+    }
+    else if (videnc1->zeroCopyEncode) {
         if (!videnc1->hInBufRef) {
             videnc1->hInBufRef =
                 gst_tividenc1_convert_gst_to_dmai(videnc1, inBuf, TRUE);