Make sure the pointer is valid before dereferencing it

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao, Yakui <yakui.zhao@intel.com>

Update the NEWS

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Silence compiler warning

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Check pointer returned from calloc()

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Check pointer against NULL first before dereferencing it

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao, Yakui <yakui.zhao@intel.com>

i965: Remove duplicate check on platform in hybrid codec proxy

Check is made in hybrid driver for respectve platforms.

Signed-off-by: Sean V Kelley <seanvk@posteo.de>

1.6.2.pre1 for development

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Merge branch 'v1.6-branch' into fdo--master

Conflicts:
configure.ac

libva-intel-driver 1.6.1

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Fix if issue of SLICE_TYPE_I statement in vme_pipeline_programing

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>
Reviewed-by: Zhao, Yakui <yakui.zhao@intel.com>

Replace --enable-wrapper with --enable-hybrid-codec

hybrid-codec is more meaningful.

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
(cherry picked from commit 2d42512bd6b7382c5effe21a5f9999742d98db88)

Replace --enable-wrapper with --enable-hybrid-codec

hybrid-codec is more meaningful.

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>

Update NEWS

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Remove file access check in loading wrapper

Remove the check for file access in the wrapper.
Otherwise this call will fail on Chrome OS with sandboxing
enabled.

Signed-off-by: Sameer Kibey <sameer.kibey@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>
(cherry picked from commit b63c28904e2568c0c50b5047b5a90d32d02b9fca)

Export the profile/entrypoints for the wrapped backend drivers

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>
(cherry picked from commit ad7b5a0233d8ead9a2ca141f3fa75f4bda1045c1)

Call the wrapped backend driver for the given decoding

The wrapped vaBeginPicture/vaRenderPicture/vaEndPicture are called.
Currently the wrapper is for the VP9 decoding.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>
(cherry picked from commit 12a09a2efe213af350f29f342da6842d66dab63e)

Add the support of wrapper the VA Buffer to the backend driver

The obj_context is passed when calling vaCreateBuffer, which can be
used to check whether it belongs to the wrapped context. If one VA buffer
belongs to wrapped buffer, the callback function of backend driver will
be called for the corresponding VA buffer.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>
(cherry picked from commit f75ddc58b16cb93e85e737792c431415288cafb1)

Add one function to wrapper VA surface into backend driver

Currently only NV12 surface is supported as the decoding uses the NV12 format.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sameer Kibey <sameer.kibey@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>
(cherry picked from commit 44e3ec2a98e99ccd839bd05cba45f0b8c9afe437)

Call the wrapped function to free wrapped surface/buffer

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>
(cherry picked from commit 464ebff117df40b04c4f8da560c311e470d5a112)

Call wrapped driver to handle config/context related with VP9 decoding

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>
(cherry picked from commit 815d17f944b13ebc1eca62572dbec0c49ea01999)

Wrapper the DriverContextP of backend driver

The default directory of backend driver is used.(LIBVA_DRIVERS_PATH).
Only when the backend driver exists, the wrapper is initialized and added.
Otherwise it won't be initialized.

And the option of "enable-wrapper" is added, which is used to determine whether
the wrapper of backend driver is supported.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>
(cherry picked from commit 3bbaff8b4180d2510c8c77d9e4d19bf84853f31a)

Add one field for Config/Context/Surface/Buffer to store the wrapper content

This is to do the preparation that the libva-intel-driver can be the user of
other backend driver.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>
(cherry picked from commit 2f254ecd154d59553a1e3949f66161bade6ca2b7)

Clean up unused local variable 'i965'

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>
(cherry picked from commit 020b341cf959c7ae10a233972fcbe29c47d86e68)

Clean up the duplicate extra two line of code

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>
(cherry picked from commit cec8f05596a4bf11070fffeec1b4c7e5b7d44323)

Fix if statement checking sampling factor for YUV422V_4Y

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>
(cherry picked from commit d7c2ba36a1bce5d4bd2e40fd161eae160946bd76)

Fix suspiciously placed semicolon at if statement.

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>
(cherry picked from commit eb06298ecadf53a752abbb99208a37bda3e90c30)

Fix memset initialize for huff_co_table and huff_si_table array

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>
(cherry picked from commit e12ddd354454a6491b24be202f0f56d401ab0a1b)

Fix memset initialize value for huff_size_table and huff_code_table

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>
(cherry picked from commit d69346b33e31efac0e7338bc24718eef76f329da)

Fix klockwork critical message hit on calloc function usage

The calloc function maybe return NULL, it will causing
memory access violation if continue using NULL C structure.
Add assert function to do checking on its.

bugzilla:
https://bugs.freedesktop.org/show_bug.cgi?id=91699

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>
(cherry picked from commit d117b9d30a00c811eb7e636c772979de846d30c8)

encode/hevc: Check slice type first in case user passes wrong parameters to driver

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
(cherry picked from commit 9170fed321780f394e8eae4a789c31120c4e957c)

encode/hevc: Check the correct BO before unreferencing it

v2: Change the log message per Emil's suggestion

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
(cherry picked from commit 1c5a8431e581eb26240c765d28f89e06138ca879)

Added LIBVA_DRIVERS_PATH configure argument
(cherry picked from commit c1f6411d3e0337226e157a51f8aab6a9c4e8b434)

Decoding: Export the attribute of slice mode for decoding

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Xiang Haihao <haihao.xiang@intel.com>
(cherry picked from commit 29f4234504fd99299997a3fc2f01393fb77030b7)

Remove the redundant check in vaBeginPicture call

The corresponding check is already executed when calling vaCreateConfig.
So the redundant check is removed.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Xiang Haihao <haihao.xiang@intel.com>
(cherry picked from commit e751897e64d1d37d6c592b71a8cc7ea8bc8a0b7f)

Add one field to store the expected VA_RT_FORMAT for surface

The VA_RT_FORMAT_XXX is also used to derive the corresponding layout of
VA SURFACE.For example: VA_RT_FORMAT_YUV420/422, RGB32 and so on.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Xiang Haihao <haihao.xiang@intel.com>
(cherry picked from commit 02a2d4cb26e9a651b33a6e35c665b287155bbb83)

VPP: Initialize the uninitialed surface to avoid NULL GPU buffer

Sometimes the surface allocation is deferred. In such case it should be
checked correctly before it is using. Otherwise the corresponding
GPU buffer is NULL.
This is to fix the regression issue reported by XBMC.

Tested-by: Zaverel <zaverel@free.fr>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
(cherry picked from commit 7c47a8f74878904e0d2fbb5da966552f783d74ab)

VPP: Flush batch buffer to assure that previous GPU operation is submitted

Tested-by: Zaverel <zaverel@free.fr>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
(cherry picked from commit 67e122a4b100365d5d8bb6377c73e39f6c44abf9)

encode/hevc: fix HEVC encode on SKL GT3

GT3 has 2 BSD rings, but HEVC commands can be only dispatched to BSD ring 0.

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
(cherry picked from commit 611d8ea9d75dc026c203e3ebe53b434769d4587c)

VPP: Combine the CSC/Scaling together to optimize the performance

Currently it is divided into two steps when the video format is invovled.
In such case it is not efficient.

V1->V2: Follow Haihao's comment to call back the missing operation of
handle background color

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
(cherry picked from commit 4bda4667fd635df5bd27ce01353a3b6d6bf85508)

CreateSurfaces2: forward function return to caller

we did not check following function's return:
i965_surface_native_memory
i965_suface_external_memory
i965_check_alloc_surface_bo
It will be in trouble if underlay buffer allocation is failed.
(cherry picked from commit 12b3d9ef379e6159e30c2aafc040f1137cd4141a)

1.6.1.pre1 for development

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
(cherry picked from commit d06c17e9c0d4a11a3efaead7da63765148bf938e)

vpp/avs: fix license terms (MIT).

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
(cherry picked from commit fb5e1cd86047e2683f169cd52cc27861447321cf)

H264: Use macroblock pair to calculate H264 decoding parameter under MBAFF flag

Based on the H264 spec the macroblock pair should be used to calculate
the corresponding parameters under MBAFF.(mb-adaptive frame-field).
Otherwise the wrong parameter is sent to GPU HW.

Fix the GPU hang issue in https://bugs.freedesktop.org/show_bug.cgi?id=91207

Tested-by: Lim, Siew Hoon <siew.hoon.lim@intel.com>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
(cherry picked from commit 7bb3658212f49a6f8d3d61b0b5d161aca73c2a11)

dec/hevc: Use a different equation for metadata tile column buffer on BSW

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
(cherry picked from commit 8d11fd7dd7952551b2d57f900ce1f408a35616a1)

dec/hevc: Use the same equation for each metadata buffer no matter slice type

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
(cherry picked from commit 6ff572fb94fce0b941d56eb7c0f45d82c1672ea3)

Gen75_vpp: Don't assert on BGRA input and output
(cherry picked from commit e49960198a4c53ad96e36e0952db514764af06f6)

Remove file access check in loading wrapper

Remove the check for file access in the wrapper.
Otherwise this call will fail on Chrome OS with sandboxing
enabled.

Signed-off-by: Sameer Kibey <sameer.kibey@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

Export the profile/entrypoints for the wrapped backend drivers

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

Call the wrapped backend driver for the given decoding

The wrapped vaBeginPicture/vaRenderPicture/vaEndPicture are called.
Currently the wrapper is for the VP9 decoding.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

Add the support of wrapper the VA Buffer to the backend driver

The obj_context is passed when calling vaCreateBuffer, which can be
used to check whether it belongs to the wrapped context. If one VA buffer
belongs to wrapped buffer, the callback function of backend driver will
be called for the corresponding VA buffer.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

Add one function to wrapper VA surface into backend driver

Currently only NV12 surface is supported as the decoding uses the NV12 format.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sameer Kibey <sameer.kibey@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

Call the wrapped function to free wrapped surface/buffer

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

Call wrapped driver to handle config/context related with VP9 decoding

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

Wrapper the DriverContextP of backend driver

The default directory of backend driver is used.(LIBVA_DRIVERS_PATH).
Only when the backend driver exists, the wrapper is initialized and added.
Otherwise it won't be initialized.

And the option of "enable-wrapper" is added, which is used to determine whether
the wrapper of backend driver is supported.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

Add one field for Config/Context/Surface/Buffer to store the wrapper content

This is to do the preparation that the libva-intel-driver can be the user of
other backend driver.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

Clean up unused local variable 'i965'

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>

Clean up the duplicate extra two line of code

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>

Fix if statement checking sampling factor for YUV422V_4Y

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>

Fix suspiciously placed semicolon at if statement.

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>

Fix memset initialize for huff_co_table and huff_si_table array

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>

Fix memset initialize value for huff_size_table and huff_code_table

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>

Fix klockwork critical message hit on calloc function usage

The calloc function maybe return NULL, it will causing
memory access violation if continue using NULL C structure.
Add assert function to do checking on its.

bugzilla:
https://bugs.freedesktop.org/show_bug.cgi?id=91699

Signed-off-by: Lim Siew Hoon <siew.hoon.lim@intel.com>

encode/hevc: Check slice type first in case user passes wrong parameters to driver

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

encode/hevc: Check the correct BO before unreferencing it

v2: Change the log message per Emil's suggestion

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Added LIBVA_DRIVERS_PATH configure argument

Decoding: Export the attribute of slice mode for decoding

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Xiang Haihao <haihao.xiang@intel.com>

Remove the redundant check in vaBeginPicture call

The corresponding check is already executed when calling vaCreateConfig.
So the redundant check is removed.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Xiang Haihao <haihao.xiang@intel.com>

Add one field to store the expected VA_RT_FORMAT for surface

The VA_RT_FORMAT_XXX is also used to derive the corresponding layout of
VA SURFACE.For example: VA_RT_FORMAT_YUV420/422, RGB32 and so on.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Xiang Haihao <haihao.xiang@intel.com>

VPP: Initialize the uninitialed surface to avoid NULL GPU buffer

Sometimes the surface allocation is deferred. In such case it should be
checked correctly before it is using. Otherwise the corresponding
GPU buffer is NULL.
This is to fix the regression issue reported by XBMC.

Tested-by: Zaverel <zaverel@free.fr>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>

VPP: Flush batch buffer to assure that previous GPU operation is submitted

Tested-by: Zaverel <zaverel@free.fr>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>

encode/hevc: fix HEVC encode on SKL GT3

GT3 has 2 BSD rings, but HEVC commands can be only dispatched to BSD ring 0.

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>

VPP: Combine the CSC/Scaling together to optimize the performance

Currently it is divided into two steps when the video format is invovled.
In such case it is not efficient.

V1->V2: Follow Haihao's comment to call back the missing operation of
handle background color

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>

CreateSurfaces2: forward function return to caller

we did not check following function's return:
i965_surface_native_memory
i965_suface_external_memory
i965_check_alloc_surface_bo
It will be in trouble if underlay buffer allocation is failed.

1.6.1.pre1 for development

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Merge branch 'v1.6-branch' into master

vpp/avs: fix license terms (MIT).

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>

H264: Use macroblock pair to calculate H264 decoding parameter under MBAFF flag

Based on the H264 spec the macroblock pair should be used to calculate
the corresponding parameters under MBAFF.(mb-adaptive frame-field).
Otherwise the wrong parameter is sent to GPU HW.

Fix the GPU hang issue in https://bugs.freedesktop.org/show_bug.cgi?id=91207

Tested-by: Lim, Siew Hoon <siew.hoon.lim@intel.com>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>

libva-intel-driver 1.6.0

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

dec/hevc: Use a different equation for metadata tile column buffer on BSW

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>

dec/hevc: Use the same equation for each metadata buffer no matter slice type

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>

Gen75_vpp: Don't assert on BGRA input and output

version 1.6.0.pre2

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

FIX:HEVC enc cause GPU hang when lcu_size=32 with 720x480 and 176x144

Signed-off-by: Qu,Pengfei <Pengfei.Qu@intel.com>
(cherry picked from commit 0f6143e2e4bd70217887e1ad86a76200ad8b38a8)

VP8 HWEnc: Modify qp threshold value for mode cost calculatation

The patch is helpful to improve quality when qp is lower than the
threshold value.

Signed-off-by: Zhong Li <zhong.li@intel.com>
(cherry picked from commit e797089446c1f5b71b239b9046d76e054dfcba59)

VPP: Configure SURFACE_STATE based on HW requirement to fix out-of-bound access issue

Otherwise some pixles will be regarded as out-of-bound and the
access will be dropped.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Xiang haihao <haihao.xiang@intel.com>
(cherry picked from commit d5cd551887c8f4e5408327aba993e9927dd7d297)

BDW/CHV/SKL: Follow the HW alignment requirement to access GPU buffer correctly

Otherwise the buffer access is incorrect.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Xiang haihao <haihao.xiang@intel.com>
(cherry picked from commit fbab204929326567c876a48c0552430dd67a9852)

VPP: Configure SURFACE_STATE based on HW requirement to fix out-of-bound access issue

Otherwise some pixles will be regarded as out-of-bound and the
access will be dropped.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Xiang haihao <haihao.xiang@intel.com>

BDW/CHV/SKL: Follow the HW alignment requirement to access GPU buffer correctly

Otherwise the buffer access is incorrect.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Xiang haihao <haihao.xiang@intel.com>

FIX:HEVC enc cause GPU hang when lcu_size=32 with 720x480 and 176x144

Signed-off-by: Qu,Pengfei <Pengfei.Qu@intel.com>

VP8 HWEnc: Modify qp threshold value for mode cost calculatation

The patch is helpful to improve quality when qp is lower than the
threshold value.

Signed-off-by: Zhong Li <zhong.li@intel.com>

Update NEWS

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Update the dependency on VA API

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Add vp8_inter_frame_gen8.asm and vp8_intra_frame_gen8.asm to the core file list

Otherwise the packakge created by 'make dist' isn't buildable.

Remove vp8_inter_frame_gen9.asm and vp8_intra_frame_gen9.asm as they are the same
of vp8_inter_frame_gen8.asm and vp8_intra_frame_gen8.asm.

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Add Android.mk to the corresponding EXTRA_DIST

'make dist' can include all Android.mk files in the release package

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90541
Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

Fix 'make dist'

Otherwise the tar package created by 'make dist' is not buildable

(cherry picked from commit 2d0ce24c66c14c3f77bef54bdc4605241e0527bd)

Update NEWS

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
(cherry picked from commit 3c66aa58ccb0fcb393472eeaa6a9188216683a79)

dec/vp8: fix segmentation update

Segment-based adjustments only occur if segmentation is enabled ($9.3).

Cc: Zhao Yakui <yakui.zhao@intel.com>
Tested-by: Charles, Daniel <daniel.charles@intel.com>
Acked-by: Zhao, Yakui <yakui.zhao@intel.com>
Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Signed-off-by: Sean V Kelley <seanvk@posteo.de>

HEVC/enc: Fix Multi Slice Encoding.

Fix the calculation of horizontal and vertical CTU position for next slice.

Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>

HEVC: encoder_utils: Fixes for packed slice header generation.

-- Write no_output_of_prior_pics_flag to bitstream header for IRAP pictures
-- The slice_temporal_mvp_enabled_flag should only presnt in non-IDR frames.
-- Write collocated_from_l0_flag to bitstream header for B slice.
-- The max_num_merge_cand should be 5 - MaxNumMergeCand

Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>

HEVC: Fix the nal unit type generation in packed slice header.

Generate the Nal unit type for packed slice headers based
on idr_pic_flag and reference_pic_flag.

Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>