Removed mode_sad.

Change-Id: I230b42ac9b617ae2c375e297057aa0756bd355fe

This is an initial attempt to allow variable block size partition
in non-RD coding flow. It tests 8x8, 16x16 and 32x32 block size per
64x64 block, all using non-RD mode decision and the associated rate
distortion costs from modeling, then selects the best block size to
encode the entire 64x64 block. Such operations are triggered every
other 3 frames. The blocks of intermediate frames will reuse the
collocated block's partition type.

It improves the compression performance by 13.2%. Note that the gains
are not evenly distributed. For many hard clips, the compression
performance is improved by 20% to 28%. Local speed test shows that
it will also increase runtime by 50%, as compared to speed -7. It is
now enabled in speed -6 setting.

Change-Id: Ib4fb8659d21621c9075b3c369ddaa9ecb0a4b204

Change-Id: I512482853bdf2695fbdf1c705a2ada354ccf76cf

Change-Id: I3b944884c048f589c86e0169aeb3c3855bc8b729

      1. Save stats for each spatial layer
      2. Add frame buffer management for svc first pass rc
      3. Set default spatial layer to 1
      4. Flush encoder at the end of stream in test app
This only supports spatial svc.
Change-Id: Ia89cfa87bb6394e6c0405b921d86c426d0a0c9ae

Change-Id: If674140e30c223c88894b983fd22a583efb99dcf

The use of uninitialized skip flag will trigger inconsistency in
coding statistics, when alternate RD and non-RD coding modes are
enabled. This commit fixes this issue and removes unnecessary if
statements from update_state_rt.

Change-Id: I7d549dcb0e3ef48b999e5bbc78174ba84502cfcf

Change-Id: I5136c45d3f5f435005a88d04652addcd835f4bfe

Change-Id: I03049f89565ce19a297e65e2d53db127dc6f77d9

Activated using aq_mode=3.

Change-Id: Ied628b9e7bd0e88b0c75790276bca75b19eb5c07

Change-Id: Ia561dda53f2dd10e3a10a2df2adb8027ab19397a

Change-Id: Ibfccee5e35c235c02843e1c1fbd3c39034619cf5

Change-Id: Ib9e27298c575afc02a98b593bc6ad60762064d9b

Change-Id: Iaaea882e59dfec38c0a9a24deaf8525a0fb62515

Change-Id: Ib5cbf77052bc03495ae135b3cdcd39c2452c2b34

Change-Id: I0d39bdbb8166ee44561f1008d1a2e76e70b36f30

Fixes issue #731
Change-Id: Id313e84b8fb4ff20f6a4e1ed11cb601927888318

This is for the purpose to test variable partition choices for the
same 64x64 block.

Change-Id: I0fab7351a62e7d3dfccd667e908bccb996ee677e

Modified the non-rd rate_mv calculation and moved it after sub-pixel
motion search is done.

Change-Id: I6a5cbd3d67ff0a86b3693e25ecf1fd77b16d708c

Change-Id: Iec885af58c95e65814fcb6ab528ce4e0874eb573

The block coding skip flags are assigned in the normal RD mode
decision loop. They are then used in the final encoding stage.
In the non-RD mode decision, the forward transform and quantization
stages are replaced by modeling based on SSE and variance of
prediction residues. This commit applies reset to this array in
the non-RD coding mode.

Change-Id: I66584669b035e9c8ac23e95047849ff277472742

This commit moves the position where rdmult is saved to make sure it
is the correct value. Prior, an uninitialized value may be saved and
restored.

This addresses issue:
https://code.google.com/p/webm/issues/detail?id=733

Change-Id: I436407f289169bc63da3c5a6bf609bed16cb71b5

This causes a build failure in VS 2008.

Change-Id: I03b0c0c006589b56d92a238d7b794711eb62575e

This function was subsumed by nonrd_use_partition, hence removed.

Change-Id: Id36757bc600ce6cf6ca03ad5df80268c4786d386

Change-Id: I12ce22c036b12073a45b762d4dd38f6ec4960e56

Combine the common variables and functions used by different
speed features.

Change-Id: Ifd1fa86200edbcc9e50b3fc3b1ba8a275bc3c17f

This commit unifies the non-RD partition use cases for both fixed
and variable block sizes. Deprecate and remove the separate function
for fixed partition type only.

Change-Id: I2b6cb945e90c1566f985adcebc4d0757480a8004

Change-Id: I652d17f7bff84f75d015f4f39652472e14eb3134

Change-Id: Ie47c139d48cb18409d71f98f6a5b9eeb9f9437a9

Change-Id: I18b3939f0b51085cdd25c9182c3a9c7536ca7e3e

This commit allows the non-RD mode decision process to return the
rate and distortion costs associated with the selected mode.

Change-Id: Ibe0f67d323f65839fd9cb0a726c1219bf7b55da9

This reverts commit b0fec6ab.

Change-Id: I9acd8ee0423f22d92138f11579611ff959331013

This reverts commit 9650b9d7.

Change-Id: I841c4a4734170fda63469e32adc10703aa4bf0fa

Change-Id: I14adfd32622152abdc22c16429db38f6724628a4

Change-Id: I9a19eb96907f674e3ce1e573f5dd49f0fbf2ae4f

Change-Id: I491fc2330734517c466f62c99b82e46d46b98875

Change-Id: I9a67dec9c198ce1dca90c086be55ad050c5c6f6c

decode_modes_b => decode_block
decode_modes_sb => decode_partition

Change-Id: I2a208f5f7bcaa1105f6a2244e37c53b8958c5d76

Brings back most of Jim's previous patch for choosing
partitioning based on variance while making it compatible
with the current state of the code. Also adds a
nonrd_use_partition() function to recursively encode  for any
arbitrary sb_type decisions within a 64x64 block; and
includes some refactoring.

Currently, when the VAR_BASED_PARTITIONING mode is turned on
for speed 7, there is a 10+% speed-up observed.

Experiments/improvements with this new partitioning method
will be conducted subsequently.

Change-Id: Ie6f43bfbde30583e941f450bf07c3b48828c9571

This commit adjusts the rate-distortion modeling for non-RD mode
decision. It puts more weights on energy from AC coefficients when
estimating the cost. The coding performance for rtc testset is
improved by 0.72%.

Change-Id: Ifa6ff11311a513ec2b10586589e82a9a21f6c61c