1. Search for block8x16/block16x8 uses block8x8's search results.
2. Check block4x4 only if block8x8 is chosen. (This hurts quality,
which will be improved in another check-in.)
3. In block4x4 search, the previous block's result is used as
MV predictor for next block.
This change improves performance.
Change-Id: I9dc089007ca08129fb6c11fe7692777ebb8647b0
The pointer passed in the user_priv argument to vpx_codec_decode()
should be propagated through to the corresponding output frame and
made available in the image's user_priv member. Fixes issue #252
Change-Id: I182746a6882c8549fb146b4a4fdb64f1789eb750
Add a new encoder control, VP8E_SET_TUNING, to allow the application
to inform the encoder that the material will benefit from certain
tuning. Expose this control as the --tune option to vpxenc. The args
helper is expanded to support enumerated arguments by name or value.
Two tunings are provided by this patch, PSNR (default) and SSIM.
Activity masking is made dependent on setting --tune=ssim, as the
current implementation hurts speed (10%) and PSNR (2.7% avg,
10% peak) too much for it to be a default yet.
Change-Id: I110d969381c4805347ff5a0ffaf1a14ca1965257
Inform the caller of the decoder if a decoded frame updated last,
golden, or altref frames, required for realtime communication
proposed in document VP8 RTP payload format.
Added a new vpx_codec_control called VP8D_GET_LAST_REF_UPDATES, to be
called after vpx_codec_decode. The control will indicate which of the
reference frames that were updated by setting the 3 LSBs in the input
int (pointer).
Change-Id: Iac9db60dac414356c7ffa0b0fede88cb91e11bd7
In SPLITMV, the 8x8 segment will be checked first. If the 8x8 rd
is better than the best, we check the other segments. Otherwise
bail. Adjustments to the thresh_mult were necessary to make
up for the initial quality loss.
The performance improved by 20% (average) for good quality,
speed 0 and speed 1, while the overall quality remained the same.
Change-Id: I717aef401323c8a254fba3e9777d2a316c774cc3
vp8_rd_pick_best_mbsegmentation looks at y only. The new
breakout does not include the frame cost, the prob_skip_false
cost, or the uv rate. Performance improved by a few percent
and the quality remained the same.
Change-Id: I94ff013998ac51e8ecce7130870f7b6600758e15
This fix added MV range checks for NEWMV mode as suggested by Jim.
To reduce unnecessary MV range checks, I tried Yaowu's suggestion.
Update UMV borders in NEWMV mode to also cover MV range check.
Also, in this way, every MV that is valid gets checked in diamond
search function.
Change-Id: I95a89ce0daf6f178c454448f13d4249f19b30f3a
The MV's range is 256. Since the new motion search uses a different
starting MV than the center ref MV, a MV range checking needs to
be done to avoid corruption.
Change-Id: I8ae0721d1bd203639e13891e2e54a2e87276f306
Per John's previous change, shrink TOKENEXTRA from 20 to 8 bytes
original: b7b1e6fb
reverted: 41f4458a
Also drop unused field from vp8_extra_bit_struct
Update ARM ASM to deal with this change. In particular, Extra is signed
and needs to be sign-extended when loaded.
Change-Id: Ibd0ddc058432bc7bb09222d6ce4ef77e93a30b41
This code is unused, as the current preproc implementation uses the
same spatial filter that postproc uses.
Change-Id: Ia06d5664917d67283f279e2480016bebed602ea7
Change the size of structure elements to reduce memory utilization.
Removed the 'section' member entirely, as it is set but never read.
Change-Id: Iad043830392fb4168cb3cd6075fb0eb70c7f691c
Added the initialization of the pointer to active map. Also added the
same logic for cyclic refresh in mbrow encoding threads.
Change-Id: Ic48d0849dc706b27fba72d07dcc498075725663d
Changed the end of block computation to use pmaxw. Removed
additional pushing and popping of registers that was not needed.
Change-Id: I08cb9b424513cd8a2c7ad8cea53b4e2adc66ef98
Change I3430820 performed an uninitialized read when
encode_breakout == 0, since the sum and sse wouldn't be set:
if(x->encode_breakout)
VARIANCE_INVOKE(..., get16x16var)(..., &sum, &sse);
if (cpi->active_map_enabled && x->active_ptr[0] == 0) {
...
} else if (sse < x->encode_breakout)
Change-Id: I915eb76d1227b4b6d1137a0dedf2c143860098a2
Corrected the initial Q range limits for the recode loop
to reflect the current allowed range for the frame.
In experimental work on constrained quality this bug was
causing unnecessary recodes.
Change-Id: I7e256fbfa681293b0223fe21ec329933d76c229f
This patch adds a weighting factor on RDMULT for UV blocks. The change
has an overall gain about 0.5% based on ssim, between 0.1 and 0.2% by
psnr numbers.
Change-Id: I97781b077ce3bb7e34241b03268491917e8d1d72
Deallocating the buffers before re-allocating them.
The fix passed James Berry's test program for memory
leak check.
Change-Id: I18c3cf665412c0e313a523e3d435106c03ca438d
Moved the code from the segmentation loop into a function
which is now called for each segment. This will allow us
to change the segment order checking more easily.
Change-Id: I9510d26f0acae5a73043fcca8f1984b121d3e052
When auto_golden wasn't set it forced all frames to be a golden
frame. Now the manual configured frequency is adhered to.
Change-Id: I360acac9bc487db0d9c4d4da6ee41f70c227c539
The inter_minq table controls the range of quantizers available
for a particular frame in two pass relative to a max Q value.
The changes reduces the range somewhat. The effect of this
was a small increase (0.3% average) in psnr for the test set
but it should also help encode speed somewhat for higher
quality modes as it will reduce the number of iterations in the
recode loop.
The change damps the range of quantizers available locally
within a section of a clip and should therefore help keep quality
more uniform. If there is systematic overshoot or undershoot the
range can shift gradually to accommodate. However, there is
some increased risk of overshoot or undershoot against the target
bit rate in VBR mode and this risk will be more pronounced for short
clips.
The change damps the range of quantizers available locally
within a section of a clip and should therefore help keep quality
more uniform. If there is systematic overshoot or undershoot the
range can shift gradually to accommodate. However, there is
some increased risk of overshoot or undershoot against the
target bit rate in VBR mode and this risk will be more
pronounced for short clips.
Change-Id: I84465567d49ae767c6c73ff2a2aac30c895adb52
Add vp8_mv_pred() to better predict starting MV for NEWMV
mode in vp8_rd_pick_inter_mode(). Set different search
ranges according to MV prediction accuracy, which improves
encoder performance without hurting the quality. Also,
as Yaowu suggested, using diamond search result as full
search starting point and therefore adjusting(reducing)
full search range helps the performance.
Change-Id: Ie4a3c8df87e697c1f4f6e2ddb693766bba1b77b6
On a keyframe alt ref and golden are refreshed. The flag was
not being set and so on the frame after a keyframe, motion
search would occur on the alt ref frame. This is not necessary
because the alt ref frame identical to the last frame in this
scenario.
Handle corner case where a forward alt-ref frame is put
directly after a keyframe.
Change-Id: I9be4cf290d694f8cf2f9a31852014b5ccf1504d3
remove warning comment in vpxenc.c: in case of 1x1 picture,
detect_bytes will be equal to '3' and we'll fall back to
RAW_TYPE.
fix read_frame() by tracking the pre-read buffer length
in the struct detect
Change-Id: If1ed86ee5260dcdbc8f9d10da6cbb84a4cc2f151
The baseline bits per MB prediction tables have been
re calibrated based on the assumption that bits per mb
is inversely proportional to the quantizer level.
Change-Id: Ibd355c7acac4b8053dda1baf1032fe35f11da7f7
Replaced existing code to decide if a frame recode is required
with a function call. This is to simplify addition of extra clauses
that may be needed for the planned constrained quality mode.
Also fixed a bug where by alt ref not considered in the test.
Change-Id: I3d40bb21abe3e19f8456761e6849deb171738b60
