x86/flacdsp: add SSE2 and AVX decorrelate functions

Two to four times faster depending on instruction set, block size and channel count.
tests/tiny_psnr: remove redundant initialization

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/4xm: remove duplicate assert

Found-by: carl
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/nellymoserenc: fix sign error

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavc/flashsv2enc: Fix encoding resolution error message.
avfilter/vf_interlace: more accurate pts calculation

Signed-off-by: Aleksey Vasenev <margtu-fivt@ya.ru>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/vf_tinterlace: fix frame rate

Signed-off-by: Aleksey Vasenev <margtu-fivt@ya.ru>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
fate: add xBR filter tests
avfilter/vf_lut: gammaval709()

See http://www.itu.int/rec/R-REC-BT.709
Item 1.2, overall opto-electronic transfer characteristics at source

Signed-off-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: rename decode_frame to decode_frame_png

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: create a function to decode IHDR chunk.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: create a function to decode pHYs chunk.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: create a function to decode IDAT chunk.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: create a function to decode PLTE chunk.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: create a function to decode tRNS chunk.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: fix some indentation/whitespaces

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: use else if instead of if for small bpp handling.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: create a function to handle small (<=4) bits per pixel values.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/pngdec: split frame decoding in its own function.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
tests/Makefile: Fix path for creation of ffprobe-test.nut.