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defaults to enabled. when disabled skips dependency file (.d) generation
allowing for faster one-time builds.

Change-Id: I2d7d7f905f1663315b8eb2b2e81fffb6fcb15829

This reverts commit a6715a75.

Removes a duplicate entry; this was previously added by:
14e37cf9 Add help info for --enable-vp9-highbitdepth

Change-Id: I61408e782232821ef6ed84775b5c79d172ba7f2d

Change-Id: Ie45c8344df9415173eae7aa20384ea8ecb05d07a

there are no known issues since:
10d5e09c Fix issues in 32bit PIC enabled build

related issues: #808, #924

Change-Id: I80454f95fe6b4ce630fdd434d740ce8b0d42951b

The current file's directory, ".", is treated much more literally
when building libvpx examples with Xcode than it is with make, and
clang cannot find common include files included via "./" when those
files actually reside one directory up in the tree.

Change-Id: I5f66a026282e35d80248ca4052ebb882b859172e

loop_filter_level is always reset in loop_filter_frame() later in
encoder.

Change-Id: I608e03d905a6b23e7d5025ca747e4784c665007e

Change-Id: I7f8f78c33eb3f33344b029a27bda320f4d68c577

Change-Id: I52565fd90461221f89134997a0782cb1b681df01

On rtc set:
speed 7 quality improves about 0.5%
speed 8 quality improves about 1.0%

Encoding time for speed 7 changes from 67804ms to 65889ms
Encoding time for speed 8 changes from 58659ms to 56808ms

Change-Id: Iabcfb53012fc1b9f3326cdbc167e5758b8c7ad30

After syncing the frame worker thread, avaiable thread count should
increase by 1 even the worker thread does not have displayable frame
to output.

Change-Id: I9eeb87720fed82dfe38555286833ff88e8a8e746

Change-Id: I8bfc80f4fffb0892e93d3326394a52d1ee3c0f37

Reuse the yv12_mb array to fetch the buffer pointers/strides
corresponding to the current reference frame.

Change-Id: I5276b7494158b2cccef15213be2dc189e9036851

This commit allows the encoder to account for additional chroma
plane costs in the mode decision process, if the current block
potentially contains significant color change. It improves the
visual quality at very low bit-rates.

The compression performance of dark720p is improved by 12.39% in
speed 6. For jimred at 150 kbps, the PSNR of V component (red)
increased by 0.2 dB, at the expense of about 5% increase in
encoding time. Note that for sequences where the chroma components
are fairly consistent, the encoding time increase is negligible.

On average the rtc set compression performance is improved by
1.172% in PSNR and 1.920% in SSIM.

Change-Id: Ia55b24ef23a25304f7ec9958fbf07fd6e658505c

This patch continues the work to remove frame_parallel_decoding_mode
requirement in VP9 multi-threaded tile decoder. In order to do that,
the frame counts associated to each thread need to be accumulated
together after the frame is decoded.

Change-Id: Idba1a756cedfed3c154aef52ed82c8da3bbf9e0c

Change-Id: I236f7f75ab9a4511d1b52a6a67299b0e844a103e

The original implementation had the following comment:
// Ignore mv costing if mvsadcost is NULL

However the current implementation does not allow for this.
If x exists then nmvsadcost must not be null.

This removes the only warning from -Wpointer-bool-conversion

https://code.google.com/p/webm/issues/detail?id=894

Change-Id: I1a2cee340d7972d41e1bbbe1ec8dfbe917667085

Avoid the use of uninitialized second reference frame for fetching
reference block.

Change-Id: I9983a0daea829700b3270dc8bf2bcc6d6ea36652

This resolves the encoder crashes on windows.

Change-Id: I159d79014cf9279751e403936ce1f84482ae82da

The current multi-threaded tile decoder requires that the videoes
are encoded with frame_parallel_decoding_mode = 1. This requirement
is not necessary, and is better to be removed. This patch includes
the first part of the work.

Change-Id: Ic7695fb3cfe13f9022582c9f0edd2aa6e2e36d28