Merged multi-resolution motion estimation with regular motion
estimation function in order to remove duplicated part. This
caused slight changes in multi-resulotion encoder quality &
performance.

Change-Id: Ib4ecc7acfebfe5eea959b5b91febae6db7b95fd1

These functions are now used by the encoder.
This is WIP with the goal of creating a common idct/add for
the encoder and decoder.  A boost of 1.8% was seen for
the HD rt test clip used.

[Tero] Added needed changes to ARM side.

Change-Id: Ibbb8000be09034203d7adffc457d3c3f8b06a5bf

While doing motion search on a macroblock, we usually call
vp8_find_near_mvs once per reference frame. Actually, for
different reference frames, the only difference in calculating
these near_mvs is they may have different sign_bias, which
causes a sign change in resulting near_mvs. In this change, we
only do find_near_mvs for the first reference frame. For other
reference frames, only need to adjust the near_mvs according to
that reference frame's sign_bias value.

Change-Id: I661394b49c6ad79fed7d0f2eb2be239b9c56f149

Allow targeting darwin11 / 10.7

Update arm paths for iPhoneOS 5.0

Change-Id: I057156349311ec66a163c4c1cea60dc5aeaaa492

Add the notion of deferred validation of parameters. We don't want to
validate the cq_level at initialization time, because it won't have
been set via set_param() yet.

Change-Id: Ia1308395e8c10e0b1dc4e9af3a09b2bd6744cc30

Sometimes same level is tested 2-3 times; store and reuse the
calculated error value.

Change-Id: Ia1c04a2568232edf9a5a62c4e2d8e8a50d85e00e

...regardless of the speed settings.

Change-Id: I4b91ac7a7208efd690dfc69e175f8eb769b6ce03

add check to set active_worst_quality to 127 if it
is set above 127

Change-Id: I7db353d5c1b1c8516a116542b6ed21c0110bb512

The conversion script was incorrectly matching
CONFIG_POSTPROC[_VISUALIZER] and generating an
incorrect vpx_config.asm

Match both PROC and ENDP on word boundaries

Change-Id: Ic2788c3b522d4ee0afc5223b72e1b09fb52645be

Aligned the image buffer and stride to 32 bytes. This enables
calling of optimized scaler function in libyuv, and improves
the performance.

Tested libyuv scaler(x86 optimization) on Linux and Windows,
including: Linux 32/64bit, visual studio 32/64bit, Cygwin, and
MinGW32.

Also, fixed a wrong pointer in vpx_codec_encode().

Change-Id: Ibe97d7a0a745f82c43852fa4ed719be5a4db6abc

Mach-O prefixes function calls with _

Change-Id: I778c2ab91266887731a6a0316b42af7641826da4

Change-Id: I4168eb6ea22ae541471738a7a3453e7d52059275

The previous definition of uintptr_t was incorrect on x64 with MSVC.
Also, the ARMV6 version of int_fast16_t was defined as unsigned for
some reason. Since the fast types are currently unused, just remove
them.

Change-Id: Idd73f77a989c77feedcb4a6802ae6bd37324ed40

Removed unnecessary transposes.

Change-Id: I029fbaf8afafee34d54a4f3333c22023c15003c3

Do the test filtering in the existing backup frame buffer instead of
the original. Copy the original data into extra buffer before doing
the  filtering. This way there is no need to restore the original
unfiltered  frame at the end of level picking process.

This came up in some discussions with Johann. Thanks!

Change-Id: I495f4301d983854673276c34ec0ddf9a9d622122

Added code to allocate aligned image buffer in vpx_img_alloc(). The
alignment of the buffer and stride is determined by the parameter
align.

Change-Id: Idc866978484be3558551c56df39130ab7f74ddd4

The example encoder down-samples the input video frames a number of
times with a down-sampling factor, and then encodes and outputs
bitstreams with different resolutions.

Support arbitrary down-sampling factor, and down-sampling factor
can be different for each encoding level.

For example, the encoder can be tested as follows.
1. Configure with multi-resolution encoding enabled:
../libvpx/configure --target=x86-linux-gcc --disable-codecs
--enable-vp8 --enable-runtime_cpu_detect --enable-debug
--disable-install-docs --enable-error-concealment
--enable-multi-res-encoding
2. Run make
3. Encode:
If input video is 1280x720, run:
./vp8_multi_resolution_encoder 1280 720 input.yuv 1.ivf 2.ivf 3.ivf 1
(output: 1.ivf(1280x720); 2.ivf(640x360); 3.ivf(320x180).
The last parameter is set to 1/0 to show/not show PSNR.)
4. Decode:
./simple_decoder 1.ivf 1.yuv
./simple_decoder 2.ivf 2.yuv
./simple_decoder 3.ivf 3.yuv
5. View video:
mplayer 1.yuv -demuxer rawvideo -rawvideo w=1280:h=720 -loop 0 -fps 30
mplayer 2.yuv -demuxer rawvideo -rawvideo w=640:h=360 -loop 0 -fps 30
mplayer 3.yuv -demuxer rawvideo -rawvideo w=320:h=180 -loop 0 -fps 30

The encoding parameters can be modified in vp8_multi_resolution_encoder.c,
for example, target bitrate, frame rate...

Modified API. John helped a lot with that. Thanks!

Change-Id: I03be9a51167eddf94399f92d269599fb3f3d54f5

dynamicly assign ARG_CTRL_CNT_MAX and
add check to make sure argument instance
doesnt already exist before creating a duplicate

Change-Id: I4f78a9c5346cda8e812cd89c077afe8996493508

This value needs to be copied to each thread's data structure.
This fixed artifact problem in multi-thread encoder.

Change-Id: Iab6d9745a1d44846aa503184705376f63a505597

In Change I83202ffd, I deleted one too many lines.

Change-Id: If05d7c8988eb5c00898dc7c833ad7d99b5eb23e7

to the dqcoeff or qcoeff buffer.  The encoder would
populate the dc coeffs of the y blocks as a separate
stage (recon_dcblock) and the decoder would use a special
version of the idct.  This change eliminates the extra copy
and reduces the code footprint.

[Tero] Added needed changes to armv6 and NEON assembly.

Change-Id: I83202ffdbaf83f6e5dd69f4ba2519fcf0b13b3ba