[Libva] [PATCH 0/7 v2] Add RGBX<-->NV12 conversion in post-processing

[Zhao Halley]

Thanks to Haihao and Gwenole's feedback.

V2 update:
    - both BGRX and RGBX to/from NV12 is supported, a flag is added 
      in statci parameter on C programing side
    - split RGBX/RGBA/BGRX/BGRA format support to a separate patch
    - define more alias in asm code to make it readable
    - fix an issue of loop counter control of surface processing
      it should be calculated by first plane width in pixel, not in byte
    - drop AYUV which is not related to this patch
    - remove y/cb/cr info which is not necessary for RGB format
    - use more switch than if
    - define NUM_PP_MODULES in the enum

History:
V1:
add RGB to NV12 and NV12 to RGB conversion
    - either is implemented in 2 ways: 8.8 fix point or float point
      however, it doesn't show performance difference in my test
    - RGB to NV12 conversion can be used to load video frames for futhure processing
    - NV12 to RGB conversion can be used for fine control of video rendering:
      for example: RGB565 support, color correction
    - for RGBX layout, we follows BMP image, that is: |B|G|R|X| in memory layout


Zhao Halley (7):
  add RGB format surface support
  distinguish first plane width in pixel or in byte
  define RGB layout in static parameter
  add GPU shader for RGB->NV12 conversion
  add rgbx to nv12 conversion in post-processing
  add GPU shader for NV12->RGBX conversion
  add nv12 to rgb conversion in post processing

 src/i965_defines.h                                 |    1 +
 src/i965_drv_video.c                               |  100 ++-
 src/i965_post_processing.c                         |  211 +++++-
 src/i965_post_processing.h                         |    9 +-
 .../gen5_6/Common/NV12_Load_8x4.asm                |   32 +-
 .../post_processing/gen5_6/Common/PL2_Load.inc     |    3 +
 .../gen5_6/Common/RGBX_Load_16x8.asm               |   57 ++
 .../gen5_6/Common/RGBX_Load_16x8.inc               |   48 ++
 .../gen5_6/Common/RGBX_Save_YUV_Fix.asm            |  115 +++
 .../gen5_6/Common/RGBX_Save_YUV_Float.asm          |  152 ++++
 .../gen5_6/Common/RGBX_to_YUV_Coef.asm             |   64 ++
 .../gen5_6/Common/YUVX_Save_RGBX_Fix.asm           |  170 +++++
 .../gen5_6/Common/YUVX_Save_RGBX_Float.asm         |  287 +++++++
 .../gen5_6/Common/YUV_to_RGBX_Coef.asm             |   99 +++
 src/shaders/post_processing/gen5_6/Makefile.am     |   14 +
 .../post_processing/gen5_6/nv12_load_save_rgbx.asm |   25 +
 .../gen5_6/nv12_load_save_rgbx.g4b.gen5            |  717 ++++++++++++++++++
 .../post_processing/gen5_6/nv12_load_save_rgbx.g6b |  790 ++++++++++++++++++++
 .../post_processing/gen5_6/rgbx_load_save_nv12.asm |   26 +
 .../gen5_6/rgbx_load_save_nv12.g4b.gen5            |  566 ++++++++++++++
 .../post_processing/gen5_6/rgbx_load_save_nv12.g6b |  639 ++++++++++++++++
 21 files changed, 4081 insertions(+), 44 deletions(-)
 mode change 100644 => 100755 src/i965_defines.h
 mode change 100644 => 100755 src/shaders/post_processing/gen5_6/Common/NV12_Load_8x4.asm
 mode change 100644 => 100755 src/shaders/post_processing/gen5_6/Common/PL2_Load.inc
 create mode 100755 src/shaders/post_processing/gen5_6/Common/RGBX_Load_16x8.asm
 create mode 100755 src/shaders/post_processing/gen5_6/Common/RGBX_Load_16x8.inc
 create mode 100755 src/shaders/post_processing/gen5_6/Common/RGBX_Save_YUV_Fix.asm
 create mode 100755 src/shaders/post_processing/gen5_6/Common/RGBX_Save_YUV_Float.asm
 create mode 100755 src/shaders/post_processing/gen5_6/Common/RGBX_to_YUV_Coef.asm
 create mode 100755 src/shaders/post_processing/gen5_6/Common/YUVX_Save_RGBX_Fix.asm
 create mode 100755 src/shaders/post_processing/gen5_6/Common/YUVX_Save_RGBX_Float.asm
 create mode 100755 src/shaders/post_processing/gen5_6/Common/YUV_to_RGBX_Coef.asm
 create mode 100755 src/shaders/post_processing/gen5_6/nv12_load_save_rgbx.asm
 create mode 100644 src/shaders/post_processing/gen5_6/nv12_load_save_rgbx.g4b.gen5
 create mode 100644 src/shaders/post_processing/gen5_6/nv12_load_save_rgbx.g6b
 create mode 100755 src/shaders/post_processing/gen5_6/rgbx_load_save_nv12.asm
 create mode 100644 src/shaders/post_processing/gen5_6/rgbx_load_save_nv12.g4b.gen5
 create mode 100644 src/shaders/post_processing/gen5_6/rgbx_load_save_nv12.g6b

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1.7.4.1