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Change-Id: I218f2a95542ae68491d2844becf6018eda529a1f

This patch fixes a regression introduced in 1d190950 where the encoder
 was using the 16x16 VP9/AV1 transforms for RDO, but then used the Daala
 transforms for encoding.

subset1:

master-daala_dct16@2017-09-13T12:05:18.013Z ->
  master_daala_dct16_use_c@2017-09-13T13:05:02.252Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.3654 | -0.7634 | -0.7407 |  -0.4884 | -0.4699 | -0.4945 |    -0.5104

master-no_rect_tx-no_var_tx@2017-09-12T00:23:18.153Z ->
  master_daala_dct16_use_c@2017-09-13T13:05:02.252Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0133 |  0.1040 | -0.0440 |  -0.0492 | -0.0151 | -0.0120 |     0.0699

Change-Id: Id1830d0975db4bd0320a47fdf45b4bca20881cfb

This allows a mask for mrc-tx to be sent in the bitstream for
inter or intra 32x32 transform blocks. The option to send the mask
vs build it from the prediction signal is currently controlled with
a macro. In the future, it is likely the macro will be removed and it
will be possible for a block to select either method. The mask building
functions are still placeholders and will be filled in in a followup.

Change-Id: Ie27643ff172cc2b1a9b389fd503fe6bf7c9e21e3

This patch fixes a regression introduced in 1d190950 where the encoder
 was using the 4x4 VP9/AV1 transforms for RDO, but then used the Daala
 transforms for encoding.
The ~2% improvement below comes from forcing the C implementation of the
 4x4 and 8x8 transforms to be used when CONFIG_DAALA_DCT4 and
 CONFIG_DAALA_DCT8 are enabled respectively.

subset-1 (--enable-experimental --enable-daala_dct4):

master@2017-08-21T21:41:18.302Z ->
 master_daala_dct4_use_c@2017-08-22T02:39:14.457Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-2.1953 | -1.2044 | -1.1865 |  -1.6173 | -1.7029 | -1.6784 |    -1.7235

Change-Id: I44d2b24094e89b2857ae03d743180e706cef45eb

Make it 0 to run at higher precision

Change-Id: I51decbf9179efa18a1a06dcc3f0e939d9895a5cd

This is undefined behaviour in C and might confuse the optimizer, leading to incorrect code.

Change-Id: Ia4bb60478068da678f013bdd6ab6a49814d89ebe

Change get_lgt in order to integrate a later experiment
lgt_from_pred with lgt. There are two main changes.

The main purpose for this change is to unify get_fwd_lgt and
get_inv_lgt functions into a get_lgt function so the lgt basis
functions can always be selected through the same function in
both forward and inverse transform paths. The structure of those
functions will also be consistent with the get_lgt_from_pred
functions that will be added in the lgt-from-pred experiment.

These changes have no impact on the bitstream.

Change-Id: Ifd3dfc1a9e1a250495830ddbf42c201e80aa913e

Coding gain becomes tiny on top of other experiments.

Change-Id: Ia89b1c2a2653f3833dff8ac8bb612eaa3ba18446

The AVX2 code only supports DCT_DCT. For other transform types, use
the C fallback.

Change-Id: I6b472ebd7d963c02aae80ff5846b7f2dcaf092ea

This experiment replaces the 64-point Type-II DCT and related
scaling vp9 transforms with the 64-point orthonormal
Daala transforms.

subset-1:

    monty-square-baseline-s1-F2@2017-07-28T03:35:45.962Z ->
      monty-square-dct64-s1-F2@2017-07-29T04:50:58.412Z

       PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
    -0.1930 | -0.2037 | -0.0643 |  -0.1917 | -0.2331 | -0.3510 |    -0.1810

objective-1-fast:

    monty-square-baseline-o1f-F2@2017-07-28T03:35:35.533Z ->
      monty-square-dct64-o1f-F2@2017-07-29T04:50:28.542Z

       PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
    -0.2557 | -0.1743 | -0.4900 |  -0.3028 | -0.4147 | -0.5764 |    -0.2864

Change-Id: I1f944df29e44d2e350c42555af274f2d75a62a92

This experiment replaces the 32-point Type-II DCT and 32-point
Type-IV DST scaling vp9 transforms with the 32-point orthonormal
Daala transforms.

subset-1:

    monty-square-baseline-s1-F3@2017-08-02T11:50:51.375Z ->
      monty-square-dct32-s1-F3@2017-08-02T11:50:18.859Z

      PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
    0.0000 |  0.0115 | -0.1044 |  -0.0185 | -0.0069 | -0.0603 |     0.0555

objective-1-fast (4 frames):

    monty-square-baseline-o1f-F3-l4-fine@2017-08-12T02:18:05.560Z ->
      monty-square-dct32-o1f-F3-l4-fine@2017-08-12T02:19:44.461Z

      PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
   -0.0269 | -0.0715 |     N/A |  -0.0547 | -0.0268 | -0.0590 |        N/A

Change-Id: Ib1bad991d82eb67956e94a6216298a84e908b169

This allows inter and intra modes to use different mask functions.
The mask functions checked in are still place holders to allow for
easy experimentation.

Change-Id: Ic20d88200676df81dffee8c43555d0ff0c7bfc28

Change-Id: I51e4a61bfca6d662330476e2d90680f1a9a80304

Change-Id: I5558e18c8c706474df28e51e6ac9f598e0e2ab48

If the mask is invalid, do not allow the encoder to select MRC_DCT.
Currently the mask is invalid if it is all 1 or all 0, but these
criteria will likely expand in a future patch.

Change-Id: I77230ea8357bfdb2bf1e6338903d44bbf1db22d1

This will aid in testing different masking methods for inter
and intra blocks.

Change-Id: Ic038da77e55405e3303177e6cd260bd5e19311c1

This experiment aims at merging lbd/hbd txfms

So far this exp uses hbd transform on lbd path.
The performances I observed are
lowres -0.089%
midres  0.065%
(negative means performance drop)

Started from here, two main things are needed to be done.
1) Fix overflow due to quantizer noise
2) Generate a 16-bit version from the hbd txfm

Change-Id: I35bb1fc0cbb78decad2570ff5826ed665f739752

This experiment replaces the 16-point Type-II DCT and 16-point Type-IV
DST scaling vp9 transforms with the 16-point orthonormal Daala
transforms.  These have reduced complexity and are perfect
reconstruction.  There is currently no net coding performance impact.

subset-1:

  monty-square-baseline-s1-F@2017-07-23T03:43:45.042Z ->
     monty-square-dct16-s1-F@2017-07-23T03:42:29.805Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0152 | -0.0028 | -0.0929 |  -0.0432 | -0.0457 | -0.0425 |    -0.0237

  objective-1-fast:

  monty-square-baseline-o1f-F@2017-07-23T03:44:19.973Z ->
     monty-square-dct16-o1f-F@2017-07-23T03:43:22.549Z

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0305 |  0.0926 | -0.1600 |   0.0471 | 0.0219 | -0.0075 |     0.0135

Change-Id: I54fed26d65fd8450693334bb400b1fafd7e0dacb

- Wrong function argument fix: this was not caught by compile test
because DCT_DCT has a value of 0, which was converted to a NULL pointer.
- Wrong prob array size.

Change-Id: Iaf1747dc7fb40db1d1ab35f965fb60994d8dec95

Change-Id: Ie2c34490dc50cb242bcd701308e6b55243883b15

MRC_DCT uses a mask based on the prediction signal to modify the
residual before applying DCT_DCT. This adds all necessary functions
to perform this transform and makes the prediction signal available
to the 32x32 txfm functions so the mask can be created. I am still
experimenting with different types of mask generation functions and
so this patch contains a placeholder. This patch has no impact on
performance.

Change-Id: Ie3772f528e82103187a85c91cf00bb291dba328a

This experiment replaces the 8-point Type-II DCT and 8-point Type-IV DST
 scaling vp9 transforms with the 8-point orthonormal Daala transforms.
These have reduced complexity and are perfect reconstruction at the cost
 of a slightly worse coding performance.
This is because the Daala transforms expect the input to be shifted by 4
 bits but the output scale of the vp9 transforms is only 3 bits.

subset-1:

monty-square-baseline-subset1 ->
  monty-square-dct8-subset1@2017-07-17T21:37:44.281Z

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0019 | -0.0011 | -0.0585 |  -0.0111 | 0.0305 |  0.0317 |     0.0187

objective-1-fast:

monty-square-baseline-o1f ->
  monty-square-dct8-o1f@2017-07-17T21:37:15.735Z

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0285 |  0.0129 | -0.5080 |   0.0529 | 0.0345 |  0.0441 |     0.0054

Change-Id: I2b775495398fb717204a295397c3c5e3ca938183

This adds the new transform to the list of possible transforms.
The impact on performance is in the noise range because the transform
implementation currently performs DCT as a placeholder. This transform
will initially only have an implementation for TX_32X32 and it is
skipped in the tx search for smaller transform sizes.

Change-Id: Iab2faddc525b478ca06972a753428a4f4ef53ac6

Use the row and column indexes to fetch txk_type, which allows the
chroma components to derive the tx type from the corresponding luma
components. It improves the coding performance of txk-sel by 0.18%.

Change-Id: I3f4bca5839e13ae95e51053e76cd86fe58202ac9

Change two similar structs, FWD_TXFM_PARAM and INV_TXFM_PARAM,
into a common struct: TxfmParam. Its definition is moved to
aom_dsp/txfm_common.h to simplify dependency.

This change is made so that, in later changes of the LGT
experiment, functions requiring FWD_TXFM_PARAM and
INV_TXFM_PARAM, such as get_fwd_lgt4 and get_inv_lgt4, can
also be unified.

Change-Id: I756b0176a02314005060adbf8e62386f10eeb344

Change-Id: I802c9e41ebfed090b5ad8300917aad5e16ad026a