Note: some of these warnings are enabled by a combination of -Wunused
(added earlier) and -Wextra.

Cherry-picked from aomedia/master: 4790a69f

Change-Id: I322a1366bd4fd6c0dec9e758c2d5e88e003b1cbf

This reduces some memcpys and callocs.

Cherry-picked from aomedia/master: 40810138

Change-Id: If04580af4c63892c8af8ac5b405c7d6aabe5af89

Cherry-picked from aomedia/master: 953f086c

Note: related fixes were already part of webm/nextgenv2.

Change-Id: I027a4f2a540af5a304b358ddbf293965b4211b9e

Change-Id: Ide91d76fafe79b2b310ffd5afb7cd5b26b681f78

The bug was introduced here:
https://chromium-review.googlesource.com/#/c/399975/4/av1/encoder/bitstream.c
In that patch, I had removed 2nd declaration of a variable of the same
name. But it turns out that the two variables actually had a different
type (even though the name was same).

Now, we keep both variables, but rename one of them -- that fixes the
mismatch. While we are at it, made both variables local as well.

The fix can be verified as follows:
../../libvpx/configure --enable-experimental --enable-supertx
--enable-var-tx --enable-entropy --enable-internal-stats && make clean
&& make -j16

aomenc -o soccer_cif_1000_av1_b8.webm ../soccer_cif.y4m --codec=av1
--limit=50 --skip=0 -p 2 --pass=1 --fpf=soccer_cif_av1.fpf --good
--cpu-used=0 --target-bitrate=1000 --lag-in-frames=25 --min-q=0
--max-q=63 --auto-alt-ref=1 --kf-max-dist=150 --kf-min-dist=0
--drop-frame=0 --static-thresh=0 --bias-pct=50 --minsection-pct=0
--maxsection-pct=2000 --arnr-maxframes=7 --arnr-strength=5 --sharpness=0
--undershoot-pct=100 --overshoot-pct=100 --frame-parallel=0
--tile-columns=0 --profile=0 --test-decode=warn

aomenc -o soccer_cif_1000_av1_b8.webm ../soccer_cif.y4m --codec=av1
--limit=50 --skip=0 -p 2 --pass=2 --fpf=soccer_cif_av1.fpf --good
--cpu-used=0 --target-bitrate=1000 --lag-in-frames=25 --min-q=0
--max-q=63 --auto-alt-ref=1 --kf-max-dist=150 --kf-min-dist=0
--drop-frame=0 --static-thresh=0 --bias-pct=50 --minsection-pct=0
--maxsection-pct=2000 --arnr-maxframes=7 --arnr-strength=5 --sharpness=0
--undershoot-pct=100 --overshoot-pct=100 --frame-parallel=0
--tile-columns=0 --profile=0 --test-decode=warn -v --psnr

Change-Id: Ibd72dbe1f620e6de231513220ee4e190606613ae

Change-Id: Iff1786a92d164e6b9cfaf4a59ece79819494276f

Use a single header reconintra.h for all intra prediction
related codes.

Change-Id: Ib869447f8c482b534c890eab673e81ff830e8d85

Prepare for the av1/nextgenv2 merge.

Coding gain (%):

               lowres     midres
ext-intra       0.69       0.97
filter-intra    0.67       0.83
both            1.05       1.48

Change-Id: Ia24d6fafb3e484c4f92192e0b7eee5e39f4f4ee6

Change-Id: Iccb75d5204f0f52f2c7d6e18d1f8223ce10f68ba

Example performance: 1.8% bit rate savings using
the AQ test mode aq-mode=4 :
./aomenc --codec=av1 --ivf --tile-columns=1 --tile-rows=1 \
                 --kf-max-dist=1000 --kf-min-dist=1000 --cpu-used=0 \
                 --passes=1 --threads=1 --lag-in-frames=0 \
                 --end-usage=q --limit=600 --cq-level=42 \
                 --aq-mode=4 --error-resilient=1 out.bits FourPeople_1280x720_60.y4m

Change-Id: Iba01cf2732a57f3c27481ac2a3c8fc37bb9e5533

Change-Id: I4128af44776d1f361bddc1fdffb75ed2224dbfa5

Change-Id: I2228a3d1778917ac760582fbec3c868be5d9ba1c

This commit changes to send frame size explicitly when
error_resilient_mode=1. Purpose is to allow parsing of bitstream
after a packet loss.

Change-Id: I7d1c010a465aa18914762cc1a3e61db377304c08

Change-Id: I1a462675c06c4b2a5f8b4b347f23fec67feccdd0

The (new) ans experiment replaces the bool coder with uABS bools. The
'rans' experiment adds multisymbol coding.

This matches the setup in aom/master.

Change-Id: Ida8372ccabf1e1e9afc45fe66362cda35a491222

It was replaced by MOTION_VAR in commit cb60b185

Change-Id: I7ab625eef4dbae2e5585d9fa3b6873aa78b2c254

Change-Id: Ic529355880b4dbd076a7e46e7b03a49a1ee5f6f0

* changes:
  Fix warnings reported by -Wshadow: Part4: main directory
  Fix warnings reported by -Wshadow: Part3: test/ directory
  Fix warnings reported by -Wshadow: Part2b: more from av1 directory
  Fix warnings reported by -Wshadow: Part2: av1 directory
  Fix warnings reported by -Wshadow: Part1b: scan_order struct and variable
  Fix warnings reported by -Wshadow: Part1: aom_dsp directory
  Move STAT_TYPE enum to source file.
  Code cleanup: mainly rd_pick_partition and methods called from there.

Change-Id: I6a885b7c6315261d67a9c2fcde914206b8301f4a

The bit accounting functions aom_reader_tell() and aom_reader_tell_frac()
 return the number of bits and 1/8th bits respectively.
This patch changes the return type from ptrdiff_t which is signed to
 uint32_t which is unsigned.
The size_t type is not used since we only care about the number of bits
 or 1/8 bits per entropy coder context and we don't expect to code more
 than 512 megabits per tile.

Change-Id: I84a119d1f52829dcbdb66a92656eacca06e42b11

Now that all warnings are taken care of, add warning flag -Wshadow to
configure.

Note: Enabling this flag for C++ generates some useless warnings about
some function parameters shadowing class member function names. So, only
enabling this warning for C code.

Cherry-picked from aomedia/master: b96cbc44

Change-Id: I3922dea2e6976b16519c4aa4d1bd395c198134f1

The tx_partition_set_contexts function changes tx_size even
for blocks coded with a rectangular transform.
This causes an internal rd inconsistency when using all of
CONFIG_VAR_TX, CONFIG_RECT_TX, CONFIG_EXT_TX.

Change-Id: Ia45d4a8893b0961534219bb96d9652719038c7a1

Change-Id: I97487bf353471bf9d245cd620780adfb1d3fc2b1

This patch adds bit account infrastructure to the bit reader API.
When configured with --enable-accounting, every bit reader API
function records the number of bits necessary to decoding a symbol.
Accounting symbol entries are collected in global accounting data
structure, that can be used to understand exactly where bits are
spent (http://aomanalyzer.org). The data structure is cleared and
reused each frame to reduce memory usage. When configured without
--enable-accounting, bit accounting does not incur any runtime
overhead.

All aom_read_xxx functions now have an additional string parameter
that specifies the symbol name. By default, the ACCT_STR macro is
used (which expands to __func__). For more precise accounting,
these should be replaced with more descriptive names.

Change-Id: Ia2e1343cb842c9391b12b77272587dfbe307a56d