Commit Graph

10 Commits

Author SHA1 Message Date
Dmitry Kovalev
b5364d4f3b Using treed_read/treed_write functions for segment ids.
Changing the order of probabilities inside mb_segment_tree_probs in order
to use treed_read/treed_write function instead of custom code.

Change-Id: I843487d5057913b9358db73da270893eefecc6c8
2013-04-30 14:06:49 -07:00
Paul Wilkins
da04312f79 Minor tweak to implicit segmentation experiment.
This minor tweak makes segment 0 neutral and used by
key frames and also extends beyond 4 segments.

Change-Id: Ife4744602aba66ac9432746db3113cc5cd88a482
2013-04-24 16:43:01 +01:00
Paul Wilkins
27bb4777cd Simple implicit segmentation experiment.
Change-Id: Iaef16122732c2a81e0927f9862b51b68dc788712
2013-04-24 10:04:27 +01:00
Dmitry Kovalev
2c42499513 Segmentation code cleanup.
Cleaning up the code, removing unused vp9_check_segref_inter function and
useless comments.

Change-Id: Ia0e1a3878dc0f9789cba84aeb507a83d9dccd26b
2013-04-05 11:55:52 -07:00
Dmitry Kovalev
8c69c193b5 Extract setup_frame_size and update_frame_context functions.
Extracting setup_frame_size and update_frame_context functions. Introducing
vp9_read_prob function as shortcut for (vp9_prob)vp9_read_literal(r, 8).

Change-Id: Ia5c68fd725b2d1b9c5eb20f69cacb62361b5a3dd
2013-03-27 14:04:35 -07:00
Paul Wilkins
1c75e77b6d Remove TX size segment feature
Change-Id: I0d226e4cb240caced37230f46905bf69b46e0cce
2013-03-19 17:31:08 +00:00
Paul Wilkins
0ff9b033b0 Segment Skip Flag
First step in simplifying the segment mode and
segment EOB flags into a simpler segment skip
flag that implies 0,0 mv and EOB at position 0.

Change-Id: Ib750cac31a7a02dc21082580498efd9f7d8d72a5
2013-01-28 17:28:04 +00:00
Ronald S. Bultje
c456b35fdf 32x32 transform for superblocks.
This adds Debargha's DCT/DWT hybrid and a regular 32x32 DCT, and adds
code all over the place to wrap that in the bitstream/encoder/decoder/RD.

Some implementation notes (these probably need careful review):
- token range is extended by 1 bit, since the value range out of this
  transform is [-16384,16383].
- the coefficients coming out of the FDCT are manually scaled back by
  1 bit, or else they won't fit in int16_t (they are 17 bits). Because
  of this, the RD error scoring does not right-shift the MSE score by
  two (unlike for 4x4/8x8/16x16).
- to compensate for this loss in precision, the quantizer is halved
  also. This is currently a little hacky.
- FDCT and IDCT is double-only right now. Needs a fixed-point impl.
- There are no default probabilities for the 32x32 transform yet; I'm
  simply using the 16x16 luma ones. A future commit will add newly
  generated probabilities for all transforms.
- No ADST version. I don't think we'll add one for this level; if an
  ADST is desired, transform-size selection can scale back to 16x16
  or lower, and use an ADST at that level.

Additional notes specific to Debargha's DWT/DCT hybrid:
- coefficient scale is different for the top/left 16x16 (DCT-over-DWT)
  block than for the rest (DWT pixel differences) of the block. Therefore,
  RD error scoring isn't easily scalable between coefficient and pixel
  domain. Thus, unfortunately, we need to compute the RD distortion in
  the pixel domain until we figure out how to scale these appropriately.

Change-Id: I00386f20f35d7fabb19aba94c8162f8aee64ef2b
2012-12-07 14:45:05 -08:00
John Koleszar
a1f15814be Clamp decoded feature data
Not all segment feature data elements are full-range powers of two, so
there are values that can be encoded that are invalid. Add a new function
to clamp values to the maximum allowed.

Change-Id: Ie47cb80ef2d54292e6b8db9f699c57214a915bc4
2012-11-27 16:38:31 -08:00
John Koleszar
fcccbcbb39 Add vp9_ prefix to all vp9 files
Support for gyp which doesn't support multiple objects in the same
static library having the same basename.

Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc
2012-11-27 14:12:30 -08:00