Giovanni Mascellani : winegstreamer/media_source: Emit absolute presentation timestamp.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c9f0a3ce5c8eee2a0098df74b98208015843fa71
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=c9f0a3ce5c8eee2a0098df74b98208015843fa71

Author: Giovanni Mascellani <gmascellani at codeweavers.com>
Date:   Wed Sep 22 13:18:37 2021 +0200

winegstreamer/media_source: Emit absolute presentation timestamp.

Currently the media source emit a presentation timestamp relative to
when the playback was last restarted. I.e., the frame that sits two
seconds inside a media file will get timestamp 2 if playback was
started at the beginning of the file, but will get timestamp 1 if
playback was last restarted at second 1.

This does not match Windows behavior, where each frame always gets
the same timestamp independently from where playback was started.

Signed-off-by: Giovanni Mascellani <gmascellani at codeweavers.com>
Signed-off-by: Huw Davies <huw at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/winegstreamer/media_source.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/dlls/winegstreamer/media_source.c b/dlls/winegstreamer/media_source.c
index 825bad8da27..a10ad998231 100644
--- a/dlls/winegstreamer/media_source.c
+++ b/dlls/winegstreamer/media_source.c
@@ -100,8 +100,6 @@ struct media_source
         SOURCE_SHUTDOWN,
     } state;
 
-    LONGLONG start_time;
-
     HANDLE read_thread;
     bool read_thread_shutdown;
 };
@@ -274,7 +272,6 @@ static void start_pipeline(struct media_source *source, struct source_async_comm
         position->vt = VT_I8;
         position->hVal.QuadPart = 0;
     }
-    source->start_time = position->hVal.QuadPart;
 
     for (i = 0; i < source->stream_count; i++)
     {
@@ -427,7 +424,7 @@ static void send_buffer(struct media_stream *stream, const struct wg_parser_even
         goto out;
     }
 
-    if (FAILED(hr = IMFSample_SetSampleTime(sample, event->u.buffer.pts - stream->parent_source->start_time)))
+    if (FAILED(hr = IMFSample_SetSampleTime(sample, event->u.buffer.pts)))
     {
         ERR("Failed to set sample time, hr %#x.\n", hr);
         goto out;