Encapsulating direct references to lst_fb_idx, gld_fb_idx, alt_fb_idx.

Change-Id: I7e65ba3f131286e433e6651970c5647311fa4687

This patch sets frame types correctly in the new
vp9_get_second_pass_params() function called prior
to encode_frame_to_data_rate() function, so that the
latter function can just work with what is passed to
it. This will allow multiple vp9_get_second_pass_params()
to be created for various encode strategies without
messing with the core encode function.

There is no difference in derf and yt. stdhd/hd are pending.

Change-Id: I70dfb97e9f497e9cee04052e0e8e0c2892eab0c3

Change-Id: I5db2e5a6c36e6c503dea2e07d9d2e0daf4ac9d89

Change-Id: I08533d59a78346dac30a7dcbc12146f23ef88bbc

This commit adds input/output ports for IDCT8_1D macro function to
provide more flexibility in variable use. It allows to skip several
buffer swap operations.

Change-Id: I21f3450509537322293043b3281bfd3949868677

Adding RefBuffer to simplify reference buffer management. The struct has a
pointer to image data and scale factors relative to the current frame.

Change-Id: If38eb1491ff687cc11428aee339f3e052e2c5d9e

Change-Id: I1d50f8701d9c9dedb84387a773a3e9b4daaad720

This commit merges the initial buffer swap operations in idct8_1d_sse2
into the array transpose step, hence reducing number of instructions
therein.

Change-Id: I219f6f50813390d2ec3ee37eecf2a4a2b44ae479

Change-Id: Ie8fcee21f41f91f94b4fa02f2a55691dea1734e3

This commit optimizes the SSE2 implmentation of idct8x8_10. It exploits
the fact that only top-left 4x4 block contains non-zero coefficients,
and hence reduces the instructions needed.

The runtime of idct8x8_10_sse2 goes down from 216 to 198 CPU cycles,
estimated by averaging over 100000 runs. For pedestrian_area_1080p 300
frames coded at 4000kbps, the average decoding speed goes up from
79.3 fps to 79.7 fps.

Change-Id: I6d277bbaa3ec9e1562667906975bae06904cb180

Change-Id: Ifd432fa3741ba47102d298e0b348eb00f5a9ce53

* changes:
  Removing CONFIG_MD5.
  Using VP9_FRAME_MARKER instead of raw number.

Change-Id: If04b57828847cee09a79c94e1098d1aa4990ea0d

In two pass encodes bits are allocated to each frame
according to a modified error score for the frame as a
fraction of the modified error score for the clip or section.

Previously a minimum rate per frame was reserved and
subtracted from the bits allocatable by the two pass code.
The vbr max section rate was enforced by clipping the
actual number of bits allocated.

In this patch the min and max vbr rates are enforced
instead by clipping the modified error scores for each frame
rather than the number of bits allocated.

Small gains for all test sets (psnr and SSIM) ranging from
~ +0.05 for YT psnr up to ~ +0.25 for Std-hd SSIM.

Change-Id: Iae27d70bdd3944e3f0cceaf225bad2e8802833de

Change-Id: Ic0345622115941f49b6a568c7b8154ba892cbf0d

Change-Id: I951abd4ad0078f78949f3cb79453ac334fb82a7e

We don't need compile time md5 configuration because --md5 is a runtime
option.

Change-Id: Ic0a2427ae5de5a18f31e5ee60c3732481b377ca1

Change-Id: I3addbf6d89a86a707c8df1a463da3e9e367910df

vpx_codec_vp9x_cx is not used internally. Experimental flag from
vp9_extracfg is also not really used. YUV 4:4:4 just works after these
changes (you have to specify --profile=1 for the encoder).

Change-Id: Ib1c8461d0d19d159827e005efe868f891eea0140

This commit takes a preliminary attempt to refine the motion search
control. It detects the SAD associated with mv predictor per reference
frame, and based on which to determine whether the encoder wants to
reduce the motion search range (if the predicted mv provides fairly
small SAD), or to skip the current reference frame (if there exists
another ref frame that gives much smaller SAD cost).

This feature is turned on in the settings of speed 1 and above.

In speed 1, compression performance changed
derf  -0.018%
yt    -0.043%
hd    -0.045%
stdhd -0.281%

speed-up
pedestrian_area_1080p at 4000 kbps 100 frames
199651ms -> 188846ms (5.5% speed-up)
blue_sky_1080p at 6000 kbps
443531ms -> 415239ms (6.3% speed-up)

In speed 2, compression performance changed
derf  -0.026%
yt    -0.090%
hd    -0.055%
stdhd -0.210%

speed-up
pedstrian 113949ms -> 108855ms (4.5% speed-up)
blue_sky  271057ms -> 257322ms (5% speed-up)

Change-Id: I1b74ea28278c94fea329d971d706d573983d...