This commit re-structures the speed feature setup for the codec
development purpose. Instead of progressively reducing encoder
complexity at the expense of incremental coding loss, we allow a
separate set of speed features, each corresponds to a certain
category of coding units:

1 << 0: transform coding
1 << 1: inter prediction
1 << 2: intra prediction
1 << 3: block partition
1 << 4: loop filters
1 << 5: rd early skip

[6 - 7] are left open for next adjustment.

It is constructed to facilitate the codec development purpose.
When working on a coding functions, one could choose to turn on
one or more less related coding units to speed up the evaluation
process. For example, to test a transform related experiment, one
could set
--dev-sf=2, 6, or 22
which corresponds to turning on:
2 - inter prediction speed features,
6 - both inter / intra speed features,
22 - inter / intra, and loop filter features.

The goal is to allow faster experimental verification during the
development process. With the experiment in a stable state, we
can evaluate its performance in speed 0 at higher confidence level.

Change-Id: Ib46c7dea2d2a60204c399dc01f10262c976adf0d

When this is set (use --monochrome), all decoded frames
will be given constant chroma planes.

If the rawvideo option is used in conjunction with the
monochrome option (i.e. --monochrome --rawvideo), the
written output will only consist of the Y (luma) plane.

Change-Id: I967817f1c3ebb1162fa9771b51cf6431120b835c

- OBU_TD => OBU_TEMPORAL_DELIMITER
- METADATA_TYPE => OBU_METADATA_TYPE
- Prefix OBU_METADATA_TYPE enum vals with "OBU_".

BUG=aomedia:1046

Change-Id: I0c63d36b77905520e427e6b77fbf4cbedabc7e51

And do so unconditionally: It's harmless to allow the
types to be defined without CONFIG_OBU enabled.

BUG=aomedia:1046

Change-Id: I5b9a3a68e4e70b07137e381f05345d2ea609a09a

2147483648 by itself can not be represented by a 32 bit "int".

Change-Id: I738573fed9f53c00b04693306acb9ad43a6485a9

Change-Id: Id277fbfa7cafdd89ad91e67170d9c75fa9416d46

Change-Id: Ia1628a6130b6614f0471810d88e7a5e112276484

This bit appears in the sequence header. At the moment, it does
nothing, but it will mean that we don't encode (or read) chroma
planes.

This patch adds the flag to the sequence header, and also adds an
encoder option (--monochrome) which enables it. At the moment, this
doesn't do anything except cause the bit to be set correctly in the
header.

Change-Id: If5598412c1c75101553d7f8f9098f9ed1163514e

Change-Id: Ic061eeab1563c249fd9d3738025aac40bc3ee542

Updated the encoder flags for externally setting reference frames using
and updating to include latest changes in AV1.

1. For what reference frames to use, always initilize
cpi->ref_frame_flags with AOM_REFFRAME_ALL at the beginning of encoding
a frame. The internal ref_frame_flags starts from external flags. Added
AOM_EFLAG_NO_REF_LAST2 and AOM_EFLAG_NO_REF_LAST3 for LAST2 and LAST3.

2. For what reference frames to update, added ext_refresh_bwd_ref_frame
and ext_refresh_alt2_ref_frame for BWD and ALT2. Also, removed
AOM_EFLAG_FORCE_GF and AOM_EFLAG_FORCE_ARF since these are never
actually used. They can be added back if needed later.

Change-Id: I1e4429290f09bfcd1b26f2babc0cf556fc6fbc6c

Change-Id: Ida1108ecca8c80ae31e47a756662abd070fc1faf

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I4705652ac8231ee25f960e8096dc97c2aeed1d20

add AOM_ to UNUSED/*DEPRECATED to avoid conflicts with other
headers.

Change-Id: I644e55f66e67aff3d43086c75e2ac9a646e4450c

Earlier, the superres scale was in the form of:
N/16, where N ranged from 8 to 16.

We change this to the form:
8/D, where D ranges from 8 to 16.

This helps on the decoder side, by making it possible to work on 8x8
blocks at a time.

Change-Id: I6c72d4b3e8d1c830e61d4bb8d7f6337a100c3064

Change the foreach_rtile_in_tile() function to call av1_tile_set_row/col
to calculate tile borders, rather than calculate tile borders itself.
This will then allow variable sized tiles.

Also remove some unused set tile width/height defines from aomcx.h

BUG=aomedia:844

Change-Id: I356c90cb4189b904ca1d6e57939582b2e92f3162

The aomenc API is modified to allow --tile_width and --tile_height to take a list of sizes.
For example, --tile_width=2,3 will give tiles of widths 2,3,2,3,... until the image width
is exhausted. --tile_width=2 will still work to gives tiles of width 2.

Change-Id: I2afa14d404557aa8b7341b20f7477590e03e0bdb

Change-Id: Ic1893cb9e6535e828035d11f90e8d1426d808269

1. Configure with --enable-experimental --enable-ext-tile and run "make"
to build.
2. Run "make test" to download lightfield test data: vase10x10.yuv.
3. Run lightfield encoder to encode whole lightfield:
  examples/lightfield_encoder 1024 1024 vase10x10.yuv vase10x10.webm 10 10 5
4. Run lightfield decoder to decode a single tile:
  examples/lightfield_decoder vase10x10.webm vase_tile.yuv 10 10 3 4 5 10 5

Note: Enabled use of AOME_USE_REFERENCE(previously deprecated) for this
example.

Change-Id: I657ab6e99ba1e2d1bf99ec25a3c4686fc80bc9bb

This patch is designed to complete the CONFIG_MAX_TILE experiment.
It adds the following features:
- Explicit tiles of same width can be signalled with command line --tile_width
- Explicit tiles of same hieght can be signalled with command line --tile_height
- max_tile now works with the depenedent horizontal tiles experiment
- additional checking added to ensure maximum number of rows/columns <= 64
- one fix to the tile group code for when the number of tiles is not a power of two

Change-Id: I749a68fdb3dcdd8d1ced2b3558f3817e4b832c06

Based on code change in:
https://aomedia-review.googlesource.com/c/aom/+/21140

Change-Id: I771ba6e08259e1c43cb06ebe6436dafe07fdf1d5

Use them to simplify the body of compare_img in encode_test_driver.cc.

Change-Id: I4fbb4e67917f61f224e3d1b1a6970d10fc3cd777

Refactors and adds superres-mode 3 and associated
paramters --superres-qthresh and --superres-kf-qthresh
that are used to trigger superres mode when the qindex
for any frame exceeds the thresholds provided for non-key
and key-frames respenctively. The superres scale factor
numerator is progressively reduced from 16 starting from
that q threshold following a fixed slope.

Change-Id: If1c782993667a6fbaaa01bbde77c4924008c0d28

Avoid changing the public API based on an experiment flag:

- Remove aom_config.h include from aom_image.h.
- Unconditionally include the existing API additions.
- Add some missing doc comments (silences Doxygen warnings).
- Return an error when using ctrl flags that require
  CONFIG_COLORSPACE_HEADERS when it's not enabled.
- Move colorspace_headers to the correct section of configure.
- Move CONFIG_COLORSPACE_HEADERS to the correct section of
  aom_config_defaults.cmake.
- clang-format style check appeasement

Change-Id: I7b5d72c6f9f1a5561409d7813ba59180d98d8805

Added 'cdef-dist' and 'daala-dist' options to --tune-metric'.
(Actual bodies of the options will be added in later separate commits)

Also, if --tune=cdef-dist or --tune=daala-dist,
enable-dist-8x8 is automatically turned on.

This commit is a part of prep-work to remove DIST_8X8, CDEF_DIST,
and DAALA_DIST experimental flags.

Change-Id: I0790b9537dfaf166cb59741997ae27da10697a33

Change-Id: I61165218afefe7fc59ad06a0abe0180754cdf7bd

Change-Id: I5d8615b585f3c4da6af1c1bfd073bdea94ac9df0

BUG=aomedia:573

Change-Id: I3989375bf97e344b422953833e853e66dcb07b23

Change-Id: Ie52ce24ca9eca272dfacfb17483ec7b7f2c126d4

Added a 1-bit flag 'large_scale_tile'. If it is 0 that is the default value,
use normal tile coding in TILE_GROUPS. If it is 1, use large-scale tile
coding in EXT_TILE.

At large_scale_tile=1 case, if single-tile-decoding is required, then the
loopfilter is disabled.

Related API and unit tests were modified.

Change-Id: I3ba12dc3d80ccf1ab21543ab3b16c02282c34e3b

Adds a separate scale numerator for resize and superres scaling on
keyframes. They will only use this factor in their respective FIXED
modes.

Change-Id: I4ef9a5760a5423ec632d644e6c7fec674bbb46f4

This moves up to the main the decision of which coding path to use,
aligning the decoder's logic on the encoder's logic.

Change-Id: I61c709ca1160aefb156d0be25cab8bb1c20ff92a

Unifies the command line arguments for resize and superes.
Removes resize arguments that are currently unused.

Change-Id: I1362dffceb8257cee539f92679d1e8d79df08e66

Adds "superres-mode" and "superres-numerator" arguments to configure
superres scaling.

There are only two modes right now: SUPERRES_FIXED and SUPERRES_DYNAMIC.
0 sets the fixed mode and 1 sets the dynamic mode.

For the fixed mode superres will scale to the provided numerator where
possible. The cumulative scale change over resizing and superres is
limited to 1/2, so it may have to back off.

For the dynamic mode, the provided numerator will be used as the initial
numerator. Asides from that it's just random for now.

Change-Id: Ibae01c77abba2599fbf51096459d09ddca458d4f

Change-Id: If93f9e41c25a5885b5927e66a298c129bb844e18

Silence -Wtypedef-redefinition warning in examples/inspect.c when
 building with --enable-inspection flag.

Change-Id: I74bbe9272b028dd7b1df3e36c8fca924ec1eae6b

Change-Id: I0c2ae6110142ce6fc6bedf10f1ba3778a8c19c3e

The aom_codec_stream_info struct had an `sz` field. It looks like
this was intended to implement polymorphism, where individual
codecs under the aom API could extend the struct with additional
members while maintaining common fields like frame size.

However, no codec-specific initializer was ever provided,
requiring callers to manually set this field to the expected
value. The extension mechanism isn't used by the av1 codec,
and also wasn't used by the vp8 or vp9 codecs in the libvpx
implementation.

Since it's not used, this commit removes the layer of indirection,
removing the confusing initialization burden and using
aom_codec_stream_info_t directly within the av1 decoder.

Change-Id: I4372a286b1d03518345c83b01c2f51db6cefe211

This unit test was ported from VP9. To prevent the motion vector out of
range bug, added a motion vector unit test. In the 4k video encoding,
always forced to use extreme motion vectors and also encouraged to use
INTER modes. In the decoding, checked if the motion vector was valid,
and also checked the encoder/decoder mismatch.

Change-Id: I1c72ea7c32a3cec9c67f1bbdc168e60507e57516

This is the first patch for ext_delta_q experiment.
* Allow delta q to work with segment features

Change-Id: I9455ebb3b5b23b41daa4afa1149672a20d3a3f2c

Added 2 tile encoding modes:
TILE_NORMAL mode supports the large-scale tile coding up to 1024 x 1024
tiles;
TILE_VR mode supports the large-scale tile coding and also the decoding
of a single tile.

TILE_NORMAL mode allows the non-vr content to be encoded in multiple tiles
without using the coding tool that are designed for vr applications.

Change-Id: Id804806a1bbcb916b7f5dc7e2c5509d88f3defcb