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Clean up the forward 2D-DCT function names in vpx_dsp.

Change-Id: I3117978596d198b690036e7eb05fe429caf3bc25

The forward 32x32 2D-DCT functions are aligned in vpx_dsp folder.
The vp9_dct.h file is not effectively used now.

Change-Id: Ie7946b6fdd784b8e91496242337bc9002c75c281

This completes the forward transform functions layout refactoring.

Change-Id: I996fb0fb795f41e2040f7b21db985774098aedbd

Move the 32x32 2D-DCT implementations from vp9/ to vpx_dsp/.

Change-Id: Id3980696f8b69906ff7a59ff9fb2b9013d60047d

Change-Id: I18895c29d6db872d033b3874de9dcd9501d0c10e

Change-Id: Iba03852ce778c956200818e3473cfb2b48cf8d8e

Replace the duplicate coefficient definition in neon implementations
of inverse transform with those from vpx_dsp/txfm_common.h

Change-Id: I4cd9bd9569ab1793dfdbb6f16d80bcb581599f0d

Removed unused tx_select_threshes and tx_select_diff.

Change-Id: I5e9e7ad170056efe14b5f071e94d0c5a36e4a34c

This commit replaces vp9_idct.h with txfm_common.h in many SIMD
implementation files for precise file dependency.

Change-Id: If73dd726bb16537e7494f28538b0a169810f9756

Separate the common coefficient constant into vpx_dsp/txfm_common.h.
Move the SSE2 macro definitions to vpx_dsp/x86/txfm_common_sse2.h.
This clears the use case of vp9_idct.h in vpx_dsp folder.

Change-Id: I319735a2abf42888e5080ac14cfbcde34be7b121

average improvement ~3x-5x

Change-Id: I73306863e9bf172d5adc06b8dd54e43985d1e063

Change-Id: I283d364a4e65ca9bf6ff581da1d0b498433c5402

Change-Id: Ib3a4814fdb9d69cf6cc23bdd208f9bc9e7972edc

Refactor and clean up the msa transform related code layout.

Change-Id: Ic5048bd3d62a6046589817da745370ea89448e44

average improvement ~3x-4x

Change-Id: I8c0b3d5c86c9eb4f802b87c971864d2cfceeb7cc

Avoid scaling the references if they have already been scaled.
Change only affects 1 pass non-svc mode for now.

Change-Id: I204f4079c026cba7adce7a7f855d072f6139ccec

The RD and load save/code grabs it as groups of four. In practice there
is no change to physical allocations becaquse this is backed by a 16-byte
memalign.

Change-Id: I01e89769872300e23227e03dd24a6e229f482025

Change-Id: I5368f5fc7283420c38d5bd85e3077b761d94ace6

Add vpx_dsp_rtcd.h to the header file list. The od_bin_fdct8x8()
here depends on forward 8x8 2D-DCT.

Change-Id: I1d71edc71f07069808823d2445c1cafd285e1b94

This fixes a VS build error. Fix by @johannkoenig.

Change-Id: I6e71435d70ae56079db7328e4c7915416ece8fda

This commit factors out common macro definitions from the forward
and inverse transform implementations into vpx_dsp. It removes
the duplicate macro definitions from encoder and decoder folders.

Change-Id: I92301acbd3317075e9c5f03328a25abb123bca78

average improvement ~2x-4x

Change-Id: I3af3ecced96c5b8e0cb811256e5089e28fe013a2

The msa macros are locally used and should not be named with VP9
prefix.

Change-Id: I2c9c746c4027383c16b9ab12b77b4e70e7e7d206