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| author | Eino-Ville Talvala <etalvala@google.com> | 2011-07-26 14:08:21 -0700 |
|---|---|---|
| committer | Eino-Ville Talvala <etalvala@google.com> | 2012-01-20 13:40:21 -0800 |
| commit | 7c50e9bad4173cddff6dfc49ee0d4e10053867b4 (patch) | |
| tree | 5c9ce6a33292ab66d09d9e40ad0b94c021f340b6 | |
| parent | 080a80212b6ec954fe8a424d9fb286c5cf1d5021 (diff) | |
| download | hardware_libhardware-7c50e9bad4173cddff6dfc49ee0d4e10053867b4.zip hardware_libhardware-7c50e9bad4173cddff6dfc49ee0d4e10053867b4.tar.gz hardware_libhardware-7c50e9bad4173cddff6dfc49ee0d4e10053867b4.tar.bz2 | |
Add timestamp control to camera preview stream operations.
At higher levels, SurfaceTextures include timestamp information in
their buffers. For accurate timestamps, they need to be set by the
driver code. This change adds the needed method into
preview_stream_ops.
Timestamp behavior is documented in SurfaceTexture.java, and
system/core/include/window.h, as well as here.
Bug-Id: 5081132
Change-Id: Id285f8e26edecf605444bc4b9e6eea9b224f9d31
| -rw-r--r-- | include/hardware/camera.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/hardware/camera.h b/include/hardware/camera.h index 4d25023..4058c30 100644 --- a/include/hardware/camera.h +++ b/include/hardware/camera.h @@ -109,6 +109,11 @@ typedef struct preview_stream_ops { int *count); int (*lock_buffer)(struct preview_stream_ops* w, buffer_handle_t* buffer); + // Timestamps are measured in nanoseconds, and must be comparable + // and monotonically increasing between two frames in the same + // preview stream. They do not need to be comparable between + // consecutive or parallel preview streams, cameras, or app runs. + int (*set_timestamp)(struct preview_stream_ops *w, int64_t timestamp); } preview_stream_ops_t; struct camera_device; |