nv50: H.264/MPEG2 decoding support via VP2, available on NV84-NV96, NVA0

Adds H.264 and MPEG2 codec support via VP2, using firmware from the
blob. Acceleration is supported at the bitstream level for H.264 and
IDCT level for MPEG2.

Known issues:
 - H.264 interlaced doesn't render properly
 - H.264 shows very occasional artifacts on a small fraction of videos
 - MPEG2 + VDPAU shows frequent but small artifacts, which aren't there
   when using XvMC on the same videos

Signed-off-by: Ilia Mirkin <[email protected]>

1 files changed, 24 insertions, 0 deletions

diff --git a/src/gallium/drivers/nv50/nv50_context.h b/src/gallium/drivers/nv50/nv50_context.h
index 0a83131fefd..b204cc8b9c1 100644
--- a/src/gallium/drivers/nv50/nv50_context.h
+++ b/src/gallium/drivers/nv50/nv50_context.h
@@ -289,4 +289,28 @@ void nv50_vertex_arrays_validate(struct nv50_context *nv50);
 /* nv50_push.c */
 void nv50_push_vbo(struct nv50_context *, const struct pipe_draw_info *);
 
+/* nv84_video.c */
+struct pipe_video_decoder *
+nv84_create_decoder(struct pipe_context *context,
+                    enum pipe_video_profile profile,
+                    enum pipe_video_entrypoint entrypoint,
+                    enum pipe_video_chroma_format chroma_format,
+                    unsigned width, unsigned height,
+                    unsigned max_references,
+                    bool expect_chunked_decode);
+
+struct pipe_video_buffer *
+nv84_video_buffer_create(struct pipe_context *pipe,
+                         const struct pipe_video_buffer *template);
+
+int
+nv84_screen_get_video_param(struct pipe_screen *pscreen,
+                            enum pipe_video_profile profile,
+                            enum pipe_video_cap param);
+
+boolean
+nv84_screen_video_supported(struct pipe_screen *screen,
+                            enum pipe_format format,
+                            enum pipe_video_profile profile);
+
 #endif