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See: https://code.google.com/p/chromium/issues/detail?id=362697

The code properly catches an invalid stream but seg faults instead of
returning an error due to a buffer not having been initialized. This
code fixes that.

Change-Id: I695595e742cb08807e1dfb2f00bc097b3eae3a9b

The current decoding scheme will decrease the reference count
of the output frame when finish decoding. Then the application
could copy the frame from the decoder buffer to application buffer.
In frame-parallel decoding, a decoded frame will not be outputted
until several frames later which depends on thread numbers. So
the decoded frame's reference count should be decreased only
after application finish copying the frame out. But due to the
limitation of vpx_codec_get_frame, decoder could not know when
application finish decoding. So use a index last_show_frame to
release the last output frame's reference count.

Change-Id: I403ee0d01148ac1182e5a2d87cf7dcc302b51e63

Change-Id: I79576920efb7f3f6f197d386727409759d8bda8d

The current decode_tiles decodes the frame one tile by one tile
and then loopfilter the whole frame or use another worker thread to
do loopfiltering.

|------|------|------|------|
|Tile1-|Tile2-|Tile3-|Tile4-|
|------|------|------|------|

For example, if a tile video has one row and four cols, decode_tiles
will decode the Tile1, then Tile2, then Tile3, then Tile4.
And during decode each tile, decode_tile will decode row by row in
each tile.

For frame parallel decoding, decode_tiles will decode video in row order
across the tiles. So the order will be:
"Decode 1st row of Tile1" -> "Decode 1st row of Tile2"
-> "Decode 1st row of Tile3" -> "Decode 1st row of Tile4"
-> "Decode 2nd row of Tile1" -> "Decode 2nd row of Tile2"
-> "Decode 2nd row of Tile3" -> "Decode 2nd row of Tile4"-> "loopfilter 1st row"

Change-Id: I2211f9adc6d142fbf411d491031203cb8a6dbf6b

  vp9_decoder.c
  vp9_dthread.c

Change-Id: Iaafe941545db98e9e3559096a955894646084ac2

Change-Id: I831fe91dfadf4e89f5bbba6ab7a9917d8dd2ed55

Change-Id: I7675f23150404913f4b457add69fb846f6921997

Inline loopfilter has been already handled in vp9_decode_frame().
Collecting all similar code in one place now.

Change-Id: I358a0280fc7c2b27cca520bc1e8c16c4eb6491dd

We only used two members from that struct: max_threads and inv_tile_order.
Moving them directly to VP9Decoder struct.

Change-Id: If696a4e5b5b41868a55f3cc971e1d7c1dd9d5f69

Change-Id: I6dc9741cdcd700f5c4a387f58da7feb58dd4bbda

That code is not used, we could easily return it back using vpx_img_write()
function.

Change-Id: Id107875c6feab6ad245a518f6b437b6ed4b1246d

Change-Id: I9677aab1c7bb0ca9e989cb21348a3a2c926d8f5a

Change-Id: If33087462293605f79d9281af133091fff33a876

Change-Id: Ieb9b455b8aaef9884391021b7f640ef24c554687

Change-Id: Ib4e31ba74c4b882bd93942ef743f4a189892738d

No need to check pbi->common.frame_to_show again.

Change-Id: I572ea4afd0d8b6000c0bb7575b7023d75cad5a4e

Change-Id: Ie2ea9dd8bd338cc9fe12ca9033df64f7644c68b3

Change-Id: I3e20c0cdb9d2437bddf21afb255855f2dead8e02

above_seg_context is alreaded freed during vp9_remove_common() call.

Change-Id: I16b72c710e71d2f143df2d47e876d220c8d374e0

Change-Id: I713af99d1e17e05a20eab20df51d74ebfd1a68d2

Change-Id: I47a8b4bf9a6cc0063d1a6785eaaad641d0659e24

Change-Id: I68819558a9c5ac6ea85fe62260712af6f4cc46b7

Change-Id: Id1fa36c92cb007b73a450cc8552e810cedad38b9

Change-Id: If4c1a48c60e8b27dd021a83170289ccc5467c6de

Change-Id: If674140e30c223c88894b983fd22a583efb99dcf

Change-Id: I18b3939f0b51085cdd25c9182c3a9c7536ca7e3e

Change-Id: I7ad79c061ad4efbc4914ac49723b48183fdbdd47

Change-Id: Ibd0892be1ddadd93b8a22fa2c2e2053001f2948f

Moving VP9Decompressor struct from vp9_onyxd_int.h to vp9_onyxd.h.

Change-Id: Ic86c15e44130541a7f692db43ef9109293f99ae8

The function has evolved over time, now only calls vp9_rtcd(), so this
commit removes the function and changes to call vp9_rtcd() directly.

Change-Id: I8cfa6190daa4b28f6f3d1e11bb3a07f9c95322bf

Change-Id: I17276e25db4592ffeff0961dd9eeaabe4bde110c

BasicRateTargeting3TemporalLayers found an error with
the get/release frame buffer management.

Change-Id: Iccff25cba1d2f276f2a0d0fb7b20cf99b4405549

This CL changes libvpx to call a function when a frame buffer
is needed for decode. Libvpx will call a release callback when
no other frames reference the frame buffer. This CL adds a
default implementation of the frame buffer callbacks. Currently
only VP9 is supported. A future CL will add support for
applications to supply their own frame buffer callbacks.

Change-Id: I1405a320118f1cdd95f80c670d52b085a62cb10d

Implemented parallel loopfiltering, which uses existing tile-
decoding threads. Each thread works on one row, and when that row
is loopfiltered, it moves to next unattended row. To ensure the
correct filtering order, threads are synchronized and one
superblock is filtered only if the superblocks it depends on are
filtered already.

To reduce synchronization overhead and speed up the decoder, we use
nsync > 1 for high resolution.

Performance tests:
1. on desktop:
8-tile 4k video using 8 threads, speedup: 70% - 80%
4-tile HD video using 4 threads, speedup: ~35%
2. on mobile device(Nexus 7):
4-tile 1080p video using 4 threads, speedup: 18% - 25%
4-tile 1080p video using 2 threads, speedup: 10% - 15%

Change-Id: If54b4a11960dd706c22d5ad145ad94156031f36a

When showing a previously decoded frame, i.e. when
show_existing_frame=1, the update of the
last_show_frame flag must be disabled.

This is to ensure that the last_show_frame flag
reflects the state of the flag for the immediately
previously decoded frame rather then the value that
was forced to ensure that a previously decoded frame
would be displayed.

This patch also adds a test vector to verify that the
display_existing_frame flag works as expected. Code
for generating the test vector can be found in this
patch:
https://gerrit.chromium.org/gerrit/#/c/68581/

(Bug originally reported by Alexander Voronov
<ru.xalba@gmail.com>).

Change-Id: I731d288fba02088959f7fcc87707137fffc6acf5

Adding new RefCntBuffer struct which contains reference counter and image
buffer.

Change-Id: I71c1f532faa13442c32c43fc03ec45b6f88fb844

Adding RefBuffer to simplify reference buffer management. The struct has a
pointer to image data and scale factors relative to the current frame.

Change-Id: If38eb1491ff687cc11428aee339f3e052e2c5d9e

the border now. Next commit will totally remove the border.

Change-Id: Ic1e1ca9cc34f81c688715b3948689b47df63a151

NUM_YV12_BUFFERS        => FRAME_BUFFERS
ALLOWED_REFS_PER_FRAME  => REFS_PER_FRAME
NUM_REF_FRAMES_LOG2     => REF_FRAMES_LOG2
NUM_REF_FRAMES          => REF_FRAMES
NUM_FRAME_CONTEXTS_LOG2 => FRAME_CONTEXTS_LOG2
NUM_FRAME_CONTEXTS      => FRAME_CONTEXTS

Change-Id: I4e1ada08f25d8fa30fdf03aebe1b1c9df0f87e63

- Disable mode info update in case where current frame is coded
  as "show existing frame".
- Should fix issue 676.

Change-Id: Ibee681850eb307f982da6528d3e31cb94f881c08