Also renaming SYNC_CODE_* to VP9_SYNC_CODE_*.

Change-Id: I9ff504c6ebce6cd6673d7df2085d597b818f5960

The commit added check to make sure no invalid memory access even when
the decoder instance is never initialized.

Change-Id: I4da343d0b3c78c27777ac7f5ce7688562c69f0c5

Change-Id: I01cbd1b00d8d8e02541b2c29b9e88e690edfcaba

Vp9 postproc is disabled for now as its not been shown to help and
may be merged with vp8.

Change-Id: I25620d6cd34c6e10331b18c7b5ef7482e39c6057

currently protected by CONFIG_NON420 as v1 is still not entirely stable

Change-Id: Id1c5081b04a2c47a842822048b8804be67d23a6d

avoids a crash caused by issue #585

Change-Id: I301595ee0227699b0da6f0dad6d870dd546e94ef

drop 'vp9_' from most static functions unrelated to the codec interface
itself.

Change-Id: I33e76c425bb7373570a57a61662a56d65ab4bdf3

static mmap_lkup

Change-Id: I24aeac1eca8453e28d58bc06925e58efc228a0a6

s/vp8/vpx/ -> vpx_codec_internal.h / vpx_codec.c

Change-Id: If4192b40206276a761b01d44e334fe15bcb81128

Change-Id: I6bfec4fa50dfc1a953edb1a2aa8e97e6e896bed6

vpxdec stays in a loop when decoding vp9.  This patch is a
quick fix to stop the loop when all data has been decoded.
Eventually we should move the vp9_get_raw_frame() call into
vp8_get_frame().

Change-Id: I3f97b6b4e1fe9ba69f746a29fc54c3304956f661

Adds 3 bits for colorspace (sent on keyframes), 2 bits for version.

Change-Id: Iaa0cf1dcdd085cebb46e2bc4a7c78cd33cf24325

Adding API to read/write uncompressed frame header bits (it is not final
yet). Separate functions to read/write uncompressed header. Moving
clr_type, error_resilient_mode, refresh_frame_context,
frame_parallel_decoding_mode, frame_context_idx from compressed partition
to uncompressed frame header.

Change-Id: Id3ed8a387980c652ae147549412f4ec24a0a5bd0

This reverts commit df037b61

Change-Id: I1a529f2590df7bc912f5035d22311268933e3dd6

The API is not final yet and can be changed. Actual layout of
uncompressed frame part will be finalized later. Right now moving
clr_type, error_resilient_mode, refresh_frame_context,
frame_parallel_decoding_mode from first compressed partition to
uncompressed frame part.

Change-Id: I3afc5d4ea92c5a114f4c3d88f96858cccc15b76e

The new code is 0x49, 0x83, 0x42

There is nothing particularly special about this code bitstream wise.
Its derivation is the word "sync" coded using 4x6bit alphabetic indices.

Change-Id: Ie2430a854af32ddc5a5c25a6c1c90cf6497ba647

Change-Id: I8b2687138df636b2b78c8cc5156e3882b0009de0

Fixes build warning in MSVC:
vp9\vp9_dx_iface.c(420) : warning C4018: '<' : signed/unsigned mismatch
vp9\vp9_dx_iface.c(423) : warning C4018: '<' : signed/unsigned mismatch

Change-Id: Ia238071aee94b2f882c1e74c380adc3df506dfb6

Fix warning on windows: signed/unsigned mismatch on lines 415, 454

Comparison was between size_t data_sz >= int index_sz on 415 and
unsigned int data_sz >= int index_sz on 454. Both might be changed to
size_t but that would be tracing and replacing all comparisons is
outside the scope of this change.

In the rest of these two functions ensure unsigned values are used
consistently.

Change-Id: I922b399ceca612a92f44b9d1d331c1c6bae9d768

Lower case member names inside VP9D_CONFIG and VP9D_COMP structs.

Change-Id: I75af9ad2d929a35c357207a3fd9ebedddabf79c3

Restore ABI compatibility with the master branch.

Change-Id: Ie9f6fdf536662bd87dfcf114d16f003422670763

Updates the YV12_BUFFER_CONFIG structure to be crop-aware. The
exiting width/height parameters are left unchanged, storing the
width and height algined to a 16 byte boundary. The cropped
dimensions are added as new fields.

This fixes a nasty visual pulse when switching between scaled and
unscaled frame dimensions due to a mismatch between the scaling
ratio and the 16-byte aligned sizes.

Change-Id: Id4a3f6aea6b9b9ae38bdfa1b87b7eb2cfcdd57b6

This is like VP8_COPY_REFERENCE, but returns a pointer to the reference
frame rather than a copy of it. This is useful when the application
doesn't know what the size of the reference is, as is the case when
scaling is in effect.

Change-Id: I63667109f65510364d0e397ebe56217140772085

The superframe index marker byte carries data in the lower 5 bits. Only the
upper 3 should be used as part of the mask to detect it. By masking with
0xf0, the previous code was incorrect for frames over 65k bytes.

Change-Id: I6248889f5af227457f359a56b2348ef6db87a3b4

A 'superframe' is a group of frames that share the same PTS, but have a
defined decoding order. This commit adds the ability to append an index
to such a group of frames, allowing for random access to the constituent
frames. This could be useful for frame-level parallelism or partial
decoding in a multilayer scenario.

Decoding the stream serially without such an index should work as a
fallback, and VP9/TestSuperframeIndexIsOptional verifies that.

Change-Id: Idff83b7560e1a7077d8fb067bfbc45b567e78b1c

Fixed a couple of variable/function definitions, as well as header
handling to support 16K sequence coding at high bit-rates.

The width and height are each specified by two bytes in the header.
Use an extra byte to explicitly indicate the scaling factors in
both directions, each ranging from 0 to 15.

Tested coding up to 16400x16400 dimension.

Change-Id: Ibc2225c6036620270f2c0cf5172d1760aaec10ec

This patch adds column-based tiling. The idea is to make each tile
independently decodable (after reading the common frame header) and
also independendly encodable (minus within-frame cost adjustments in
the RD loop) to speed-up hardware & software en/decoders if they used
multi-threading. Column-based tiling has the added advantage (over
other tiling methods) that it minimizes realtime use-case latency,
since all threads can start encoding data as soon as the first SB-row
worth of data is available to the encoder.

There is some test code that does random tile ordering in the decoder,
to confirm that each tile is indeed independently decodable from other
tiles in the same frame. At tile edges, all contexts assume default
values (i.e. 0, 0 motion vector, no coefficients, DC intra4x4 mode),
and motion vector search and ordering do not cross tiles in the same
frame.
t log

Tile independence is not maintained between frames ATM, i.e. tile 0 of
frame 1 is free to use motion vect...

Adds an error-resilient mode where frames can be continued
to be decoded even when there are errors (due to network losses)
on a prior frame. Specifically, backward updates are turned off
and probabilities of various symbols are reset to defaults at
the beginning of each frame. Further, the last frame's mvs are
not used for the mv reference list, and the sorting of the
initial list based on search on previous frames is turned off
as well.

Also adds a test where an arbitrary set of frames are skipped
from decoding to simulate errors. The test verifies (1) that if
the error frames are droppable - i.e. frame buffer updates have
been turned off - there are no mismatch errors for the remaining
frames after the error frames; and (2) if the error-frames are non
droppable, there are not only no decoding errors but the mismatch
PSNR between the decoder's version of the post-error frames and the
encoder's version is at least 20 dB.

Change-Id: Ie6e2bcd436b1e8643270356d3a930e8989ff52a5

Remove lst_fb_idx, gld_fb_idx, alt_fb_idx, refresh_last_frame,
refresh_golden_frame, refresh_alt_ref_frame from common. Gold/Alt are
encode side conventions. From the decoder's perspective, we want to be
dealing with numbered references.

Updates to active_ref 2 signal mode context switches, vestigial from
refresh_alt_ref_frame. This needs some clean up to make sense with
increased numbers of reference frames, as well as reimplementing the
swapping of alt/golden which was previously done using the
buffer-to-buffer copy mechanism removed in an earlier commit.

Change-Id: I7334445158b7666f9295d2a2dd22aa03f4485f58

See https://codereview.chromium.org/11875006/

Change-Id: Ied2a17df2b3222635f84aef120eaa9feb53750d2

For coefficients, use int16_t (instead of short); for pixel values in
16-bit intermediates, use uint16_t (instead of unsigned short); for all
others, use uint8_t (instead of unsigned char).

Change-Id: I3619cd9abf106c3742eccc2e2f5e89a62774f7da

Support for gyp which doesn't support multiple objects in the same
static library having the same basename.

Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc

Modify the decoder to return the ending position of the bool decoder and
use that as the starting position for the next frame.

The constant-space algorithm for parsing the appended frame lengths is
O(n^2), which is a potential DoS concern if n is unbounded. Revisit
the appended lengths for use as partition lengths when multipartition
support is added.

In addition, this allows decoding of raw streams outside of a container
without additional framing information, though it's insufficient to
be able to remux said stream into a container.

Change-Id: I71e801a9c3e37abe559a56a597635b0cbae1934b

Change-Id: Ib8f8a66c9fd31e508cdc9caa662192f38433aa3d

Change-Id: I44b3ad780cef6f448fa17ff8e28fea87ef9cd518

Update vpx_scale from current code in master, run style transform, fix
lint warnings.

Change-Id: I47eadeb5b6881d448ea3728537f9b8a5b5aac78e

Change-Id: Ic084c475844b24092a433ab88138cf58af3abbe4

For non-static functions, change the prefix to vp9_. For static functions,
remove the prefix. Also fix some comments, remove unused code or unused
function prototypes.

Change-Id: I1f8be05362f66060fe421c3d4c9a906fdf835de5

This change encompasses VP8_PTR, VP8_COMP, VP8D_COMP, VP8_COMMON,
VP8Decompressor and VP8Common.

Change-Id: I514ef4ad4e682370f36d656af1c09ee20da216ad

For local symbols, make them static instead.

Change-Id: I13d60947a46f711bc8991e16100cea2a13e3a22e