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Because structures defined in vdpau.h may be used outside of the libvdpau
interface itself, it's important for them to not change, even to add new fields
to the end.  Clarify this by tightening the restriction on how structures can be
modified.

This means that we can also *relax* the restriction on versioned structures that
says that they can only be extended by adding fields to the end.  As long as
uint32_t struct_version is the first field of the structure, the implementation
can look at that to determine the complete layout of the rest of the fields.
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

Signed-off-by: Rémi Denis-Courmont <remid@nvidia.com>
Reviewed-by: José Hiram Soltren <jsoltren@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

Signed-off-by: Rémi Denis-Courmont <remid@nvidia.com>
Reviewed-by: José Hiram Soltren <jsoltren@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

When this comment was written, it wasn't clear how the library was going to
figure out which back-end driver to load.  Since then, the wrapper has been
updated to make DRI2 that "VDPAU-specific X extension."
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Reviewed-by: José Hiram Soltren <jsoltren@nvidia.com>

Signed-off-by: José Hiram Soltren <jsoltren@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

(version 2, supercedes "Clarify type of source_surface")

VDPAU takes special action if source_surface is VDP_INVALID_HANDLE,
not if it is NULL, in both VdpOutputSurfaceRenderOutputSurface
and VdpOutputSurfaceRenderBitmapSurface.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

Allow the user to specify the location of the backend driver,
via the VDPAU_DRIVER_PATH environment variable. This allows
easier testing of VDPAU backends without the need to rebuild
libvdpau.

Inspired by LIBGL_DRIVERS_PATH from mesa.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

VdpPictureInfo should not be a pointer, otherwise the
VdpDecoderRender function signature asks for a pointer to a pointer.
But it really does expect a pointer directly to e.g. VdpPictureInfoH264.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Tested-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

  * Fix Doxygen warning; it gets confused by quotes.
  * Add subsection names, so part of the title doesn't get swallowed as the
    subsection name.
  * Document data required from MPEG-4 Part 2 & DivX bitstream.
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

* Add a --with-module-dir configure parameter.

* Pass the moduledir into the wrapper.  Use it to construct the path to search
  for drivers.  Require drivers to end in a ".1" version, in case we ever want
  to rev. the interface between the wrapper and the drivers.

* If no driver is found in the new module dir, look for one in the default
  search paths.  This is intended to find libvdpau_nvidia.so for drivers that
  predate the change to move it, and can be removed in the future.

* Stash the moduledir into vdpau.pc.  Drivers can find this with
  `pkg-config --variable=moduledir vdpau`.

* Add a version to libvdpau_trace.so in case the interface between it and
  libvdpau.so ever changes.

* Install libvdpau_trace.so.1 to moduledir instead of libdir.
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>

Add profiles for MPEG-4 part 2, DivX 4, and DivX 5.  Also add new high quality
scaling options.