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673 lines
31 KiB
C
673 lines
31 KiB
C
/*
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* Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef SWSCALE_SWSCALE_INTERNAL_H
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#define SWSCALE_SWSCALE_INTERNAL_H
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#include "config.h"
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#if HAVE_ALTIVEC_H
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#include <altivec.h>
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#endif
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#include "libavutil/avutil.h"
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#include "libavutil/log.h"
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#include "libavutil/pixfmt.h"
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#include "libavutil/pixdesc.h"
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#define STR(s) AV_TOSTRING(s) // AV_STRINGIFY is too long
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#define FAST_BGR2YV12 // use 7-bit instead of 15-bit coefficients
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#define MAX_FILTER_SIZE 256
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#if HAVE_BIGENDIAN
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#define ALT32_CORR (-1)
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#else
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#define ALT32_CORR 1
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#endif
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#if ARCH_X86_64
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# define APCK_PTR2 8
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# define APCK_COEF 16
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# define APCK_SIZE 24
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#else
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# define APCK_PTR2 4
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# define APCK_COEF 8
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# define APCK_SIZE 16
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#endif
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struct SwsContext;
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typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t *src[],
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int srcStride[], int srcSliceY, int srcSliceH,
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uint8_t *dst[], int dstStride[]);
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/**
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* Write one line of horizontally scaled data to planar output
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* without any additional vertical scaling (or point-scaling).
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*
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* @param src scaled source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param dest pointer to the output plane. For >8bit
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* output, this is in uint16_t
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* @param dstW width of destination in pixels
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* @param dither ordered dither array of type int16_t and size 8
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* @param offset Dither offset
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*/
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typedef void (*yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW,
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const uint8_t *dither, int offset);
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/**
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* Write one line of horizontally scaled data to planar output
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* with multi-point vertical scaling between input pixels.
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*
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* @param filter vertical luma/alpha scaling coefficients, 12bit [0,4096]
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* @param src scaled luma (Y) or alpha (A) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param filterSize number of vertical input lines to scale
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* @param dest pointer to output plane. For >8bit
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* output, this is in uint16_t
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* @param dstW width of destination pixels
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* @param offset Dither offset
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*/
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typedef void (*yuv2planarX_fn)(const int16_t *filter, int filterSize,
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const int16_t **src, uint8_t *dest, int dstW,
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const uint8_t *dither, int offset);
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/**
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* Write one line of horizontally scaled chroma to interleaved output
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* with multi-point vertical scaling between input pixels.
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*
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* @param c SWS scaling context
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* @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
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* @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param chrFilterSize number of vertical chroma input lines to scale
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* @param dest pointer to the output plane. For >8bit
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* output, this is in uint16_t
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* @param dstW width of chroma planes
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*/
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typedef void (*yuv2interleavedX_fn)(struct SwsContext *c,
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const int16_t *chrFilter,
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int chrFilterSize,
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const int16_t **chrUSrc,
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const int16_t **chrVSrc,
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uint8_t *dest, int dstW);
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/**
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* Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
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* output without any additional vertical scaling (or point-scaling). Note
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* that this function may do chroma scaling, see the "uvalpha" argument.
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*
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* @param c SWS scaling context
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* @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param dest pointer to the output plane. For 16bit output, this is
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* uint16_t
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* @param dstW width of lumSrc and alpSrc in pixels, number of pixels
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* to write into dest[]
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* @param uvalpha chroma scaling coefficient for the second line of chroma
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* pixels, either 2048 or 0. If 0, one chroma input is used
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* for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
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* is set, it generates 1 output pixel). If 2048, two chroma
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* input pixels should be averaged for 2 output pixels (this
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* only happens if SWS_FLAG_FULL_CHR_INT is not set)
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* @param y vertical line number for this output. This does not need
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* to be used to calculate the offset in the destination,
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* but can be used to generate comfort noise using dithering
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* for some output formats.
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*/
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typedef void (*yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc,
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const int16_t *chrUSrc[2],
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const int16_t *chrVSrc[2],
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const int16_t *alpSrc, uint8_t *dest,
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int dstW, int uvalpha, int y);
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/**
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* Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
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* output by doing bilinear scaling between two input lines.
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*
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* @param c SWS scaling context
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* @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param dest pointer to the output plane. For 16bit output, this is
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* uint16_t
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* @param dstW width of lumSrc and alpSrc in pixels, number of pixels
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* to write into dest[]
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* @param yalpha luma/alpha scaling coefficients for the second input line.
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* The first line's coefficients can be calculated by using
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* 4096 - yalpha
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* @param uvalpha chroma scaling coefficient for the second input line. The
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* first line's coefficients can be calculated by using
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* 4096 - uvalpha
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* @param y vertical line number for this output. This does not need
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* to be used to calculate the offset in the destination,
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* but can be used to generate comfort noise using dithering
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* for some output formats.
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*/
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typedef void (*yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2],
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const int16_t *chrUSrc[2],
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const int16_t *chrVSrc[2],
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const int16_t *alpSrc[2],
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uint8_t *dest,
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int dstW, int yalpha, int uvalpha, int y);
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/**
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* Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
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* output by doing multi-point vertical scaling between input pixels.
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*
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* @param c SWS scaling context
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* @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
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* @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param lumFilterSize number of vertical luma/alpha input lines to scale
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* @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
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* @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param chrFilterSize number of vertical chroma input lines to scale
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* @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
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* 19-bit for 16bit output (in int32_t)
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* @param dest pointer to the output plane. For 16bit output, this is
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* uint16_t
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* @param dstW width of lumSrc and alpSrc in pixels, number of pixels
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* to write into dest[]
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* @param y vertical line number for this output. This does not need
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* to be used to calculate the offset in the destination,
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* but can be used to generate comfort noise using dithering
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* or some output formats.
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*/
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typedef void (*yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter,
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const int16_t **lumSrc, int lumFilterSize,
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const int16_t *chrFilter,
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const int16_t **chrUSrc,
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const int16_t **chrVSrc, int chrFilterSize,
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const int16_t **alpSrc, uint8_t *dest,
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int dstW, int y);
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/* This struct should be aligned on at least a 32-byte boundary. */
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typedef struct SwsContext {
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/**
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* info on struct for av_log
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*/
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const AVClass *av_class;
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/**
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* Note that src, dst, srcStride, dstStride will be copied in the
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* sws_scale() wrapper so they can be freely modified here.
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*/
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SwsFunc swScale;
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int srcW; ///< Width of source luma/alpha planes.
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int srcH; ///< Height of source luma/alpha planes.
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int dstH; ///< Height of destination luma/alpha planes.
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int chrSrcW; ///< Width of source chroma planes.
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int chrSrcH; ///< Height of source chroma planes.
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int chrDstW; ///< Width of destination chroma planes.
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int chrDstH; ///< Height of destination chroma planes.
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int lumXInc, chrXInc;
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int lumYInc, chrYInc;
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enum PixelFormat dstFormat; ///< Destination pixel format.
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enum PixelFormat srcFormat; ///< Source pixel format.
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int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
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int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
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int dstBpc, srcBpc;
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int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
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int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
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int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
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int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
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int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
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int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
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double param[2]; ///< Input parameters for scaling algorithms that need them.
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uint32_t pal_yuv[256];
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uint32_t pal_rgb[256];
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/**
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* @name Scaled horizontal lines ring buffer.
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* The horizontal scaler keeps just enough scaled lines in a ring buffer
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* so they may be passed to the vertical scaler. The pointers to the
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* allocated buffers for each line are duplicated in sequence in the ring
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* buffer to simplify indexing and avoid wrapping around between lines
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* inside the vertical scaler code. The wrapping is done before the
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* vertical scaler is called.
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*/
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//@{
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int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
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int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
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int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
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int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
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int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
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int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
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int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
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int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
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int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
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int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
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//@}
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uint8_t *formatConvBuffer;
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/**
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* @name Horizontal and vertical filters.
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* To better understand the following fields, here is a pseudo-code of
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* their usage in filtering a horizontal line:
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* @code
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* for (i = 0; i < width; i++) {
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* dst[i] = 0;
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* for (j = 0; j < filterSize; j++)
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* dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
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* dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
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* }
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* @endcode
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*/
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//@{
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int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
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int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
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int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
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int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
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int32_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
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int32_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
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int32_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
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int32_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
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int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
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int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
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int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
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int vChrFilterSize; ///< Vertical filter size for chroma pixels.
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//@}
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int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
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int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
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uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
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uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
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int canMMX2BeUsed;
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int dstY; ///< Last destination vertical line output from last slice.
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int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
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void *yuvTable; // pointer to the yuv->rgb table start so it can be freed()
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uint8_t *table_rV[256];
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uint8_t *table_gU[256];
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int table_gV[256];
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uint8_t *table_bU[256];
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//Colorspace stuff
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int contrast, brightness, saturation; // for sws_getColorspaceDetails
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int srcColorspaceTable[4];
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int dstColorspaceTable[4];
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int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
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int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
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int yuv2rgb_y_offset;
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int yuv2rgb_y_coeff;
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int yuv2rgb_v2r_coeff;
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int yuv2rgb_v2g_coeff;
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int yuv2rgb_u2g_coeff;
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int yuv2rgb_u2b_coeff;
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#define RED_DITHER "0*8"
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#define GREEN_DITHER "1*8"
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#define BLUE_DITHER "2*8"
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#define Y_COEFF "3*8"
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#define VR_COEFF "4*8"
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#define UB_COEFF "5*8"
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#define VG_COEFF "6*8"
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#define UG_COEFF "7*8"
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#define Y_OFFSET "8*8"
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#define U_OFFSET "9*8"
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#define V_OFFSET "10*8"
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#define LUM_MMX_FILTER_OFFSET "11*8"
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#define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
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#define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
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#define ESP_OFFSET "11*8+4*4*256*2+8"
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#define VROUNDER_OFFSET "11*8+4*4*256*2+16"
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#define U_TEMP "11*8+4*4*256*2+24"
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#define V_TEMP "11*8+4*4*256*2+32"
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#define Y_TEMP "11*8+4*4*256*2+40"
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#define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
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#define UV_OFF_PX "11*8+4*4*256*3+48"
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#define UV_OFF_BYTE "11*8+4*4*256*3+56"
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#define DITHER16 "11*8+4*4*256*3+64"
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#define DITHER32 "11*8+4*4*256*3+80"
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DECLARE_ALIGNED(8, uint64_t, redDither);
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DECLARE_ALIGNED(8, uint64_t, greenDither);
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DECLARE_ALIGNED(8, uint64_t, blueDither);
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DECLARE_ALIGNED(8, uint64_t, yCoeff);
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DECLARE_ALIGNED(8, uint64_t, vrCoeff);
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DECLARE_ALIGNED(8, uint64_t, ubCoeff);
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DECLARE_ALIGNED(8, uint64_t, vgCoeff);
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DECLARE_ALIGNED(8, uint64_t, ugCoeff);
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DECLARE_ALIGNED(8, uint64_t, yOffset);
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DECLARE_ALIGNED(8, uint64_t, uOffset);
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DECLARE_ALIGNED(8, uint64_t, vOffset);
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int32_t lumMmxFilter[4 * MAX_FILTER_SIZE];
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int32_t chrMmxFilter[4 * MAX_FILTER_SIZE];
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int dstW; ///< Width of destination luma/alpha planes.
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DECLARE_ALIGNED(8, uint64_t, esp);
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DECLARE_ALIGNED(8, uint64_t, vRounder);
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DECLARE_ALIGNED(8, uint64_t, u_temp);
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DECLARE_ALIGNED(8, uint64_t, v_temp);
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DECLARE_ALIGNED(8, uint64_t, y_temp);
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int32_t alpMmxFilter[4 * MAX_FILTER_SIZE];
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// alignment of these values is not necessary, but merely here
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// to maintain the same offset across x8632 and x86-64. Once we
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// use proper offset macros in the asm, they can be removed.
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DECLARE_ALIGNED(8, ptrdiff_t, uv_off_px); ///< offset (in pixels) between u and v planes
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DECLARE_ALIGNED(8, ptrdiff_t, uv_off_byte); ///< offset (in bytes) between u and v planes
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DECLARE_ALIGNED(8, uint16_t, dither16)[8];
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DECLARE_ALIGNED(8, uint32_t, dither32)[8];
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const uint8_t *chrDither8, *lumDither8;
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#if HAVE_ALTIVEC
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vector signed short CY;
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|
vector signed short CRV;
|
|
vector signed short CBU;
|
|
vector signed short CGU;
|
|
vector signed short CGV;
|
|
vector signed short OY;
|
|
vector unsigned short CSHIFT;
|
|
vector signed short *vYCoeffsBank, *vCCoeffsBank;
|
|
#endif
|
|
|
|
#if ARCH_BFIN
|
|
DECLARE_ALIGNED(4, uint32_t, oy);
|
|
DECLARE_ALIGNED(4, uint32_t, oc);
|
|
DECLARE_ALIGNED(4, uint32_t, zero);
|
|
DECLARE_ALIGNED(4, uint32_t, cy);
|
|
DECLARE_ALIGNED(4, uint32_t, crv);
|
|
DECLARE_ALIGNED(4, uint32_t, rmask);
|
|
DECLARE_ALIGNED(4, uint32_t, cbu);
|
|
DECLARE_ALIGNED(4, uint32_t, bmask);
|
|
DECLARE_ALIGNED(4, uint32_t, cgu);
|
|
DECLARE_ALIGNED(4, uint32_t, cgv);
|
|
DECLARE_ALIGNED(4, uint32_t, gmask);
|
|
#endif
|
|
|
|
#if HAVE_VIS
|
|
DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
|
|
#endif
|
|
|
|
/* function pointers for swScale() */
|
|
yuv2planar1_fn yuv2plane1;
|
|
yuv2planarX_fn yuv2planeX;
|
|
yuv2interleavedX_fn yuv2nv12cX;
|
|
yuv2packed1_fn yuv2packed1;
|
|
yuv2packed2_fn yuv2packed2;
|
|
yuv2packedX_fn yuv2packedX;
|
|
|
|
/// Unscaled conversion of luma plane to YV12 for horizontal scaler.
|
|
void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
|
|
int width, uint32_t *pal);
|
|
/// Unscaled conversion of alpha plane to YV12 for horizontal scaler.
|
|
void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
|
|
int width, uint32_t *pal);
|
|
/// Unscaled conversion of chroma planes to YV12 for horizontal scaler.
|
|
void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
|
|
const uint8_t *src1, const uint8_t *src2,
|
|
int width, uint32_t *pal);
|
|
|
|
/**
|
|
* Functions to read planar input, such as planar RGB, and convert
|
|
* internally to Y/UV.
|
|
*/
|
|
/** @{ */
|
|
void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width);
|
|
void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4],
|
|
int width);
|
|
/** @} */
|
|
|
|
/**
|
|
* Scale one horizontal line of input data using a bilinear filter
|
|
* to produce one line of output data. Compared to SwsContext->hScale(),
|
|
* please take note of the following caveats when using these:
|
|
* - Scaling is done using only 7bit instead of 14bit coefficients.
|
|
* - You can use no more than 5 input pixels to produce 4 output
|
|
* pixels. Therefore, this filter should not be used for downscaling
|
|
* by more than ~20% in width (because that equals more than 5/4th
|
|
* downscaling and thus more than 5 pixels input per 4 pixels output).
|
|
* - In general, bilinear filters create artifacts during downscaling
|
|
* (even when <20%), because one output pixel will span more than one
|
|
* input pixel, and thus some pixels will need edges of both neighbor
|
|
* pixels to interpolate the output pixel. Since you can use at most
|
|
* two input pixels per output pixel in bilinear scaling, this is
|
|
* impossible and thus downscaling by any size will create artifacts.
|
|
* To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
|
|
* in SwsContext->flags.
|
|
*/
|
|
/** @{ */
|
|
void (*hyscale_fast)(struct SwsContext *c,
|
|
int16_t *dst, int dstWidth,
|
|
const uint8_t *src, int srcW, int xInc);
|
|
void (*hcscale_fast)(struct SwsContext *c,
|
|
int16_t *dst1, int16_t *dst2, int dstWidth,
|
|
const uint8_t *src1, const uint8_t *src2,
|
|
int srcW, int xInc);
|
|
/** @} */
|
|
|
|
/**
|
|
* Scale one horizontal line of input data using a filter over the input
|
|
* lines, to produce one (differently sized) line of output data.
|
|
*
|
|
* @param dst pointer to destination buffer for horizontally scaled
|
|
* data. If the number of bits per component of one
|
|
* destination pixel (SwsContext->dstBpc) is <= 10, data
|
|
* will be 15bpc in 16bits (int16_t) width. Else (i.e.
|
|
* SwsContext->dstBpc == 16), data will be 19bpc in
|
|
* 32bits (int32_t) width.
|
|
* @param dstW width of destination image
|
|
* @param src pointer to source data to be scaled. If the number of
|
|
* bits per component of a source pixel (SwsContext->srcBpc)
|
|
* is 8, this is 8bpc in 8bits (uint8_t) width. Else
|
|
* (i.e. SwsContext->dstBpc > 8), this is native depth
|
|
* in 16bits (uint16_t) width. In other words, for 9-bit
|
|
* YUV input, this is 9bpc, for 10-bit YUV input, this is
|
|
* 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
|
|
* @param filter filter coefficients to be used per output pixel for
|
|
* scaling. This contains 14bpp filtering coefficients.
|
|
* Guaranteed to contain dstW * filterSize entries.
|
|
* @param filterPos position of the first input pixel to be used for
|
|
* each output pixel during scaling. Guaranteed to
|
|
* contain dstW entries.
|
|
* @param filterSize the number of input coefficients to be used (and
|
|
* thus the number of input pixels to be used) for
|
|
* creating a single output pixel. Is aligned to 4
|
|
* (and input coefficients thus padded with zeroes)
|
|
* to simplify creating SIMD code.
|
|
*/
|
|
/** @{ */
|
|
void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW,
|
|
const uint8_t *src, const int16_t *filter,
|
|
const int32_t *filterPos, int filterSize);
|
|
void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW,
|
|
const uint8_t *src, const int16_t *filter,
|
|
const int32_t *filterPos, int filterSize);
|
|
/** @} */
|
|
|
|
/// Color range conversion function for luma plane if needed.
|
|
void (*lumConvertRange)(int16_t *dst, int width);
|
|
/// Color range conversion function for chroma planes if needed.
|
|
void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width);
|
|
|
|
int needs_hcscale; ///< Set if there are chroma planes to be converted.
|
|
} SwsContext;
|
|
//FIXME check init (where 0)
|
|
|
|
SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
|
|
int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
|
|
int fullRange, int brightness,
|
|
int contrast, int saturation);
|
|
|
|
void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
|
|
int brightness, int contrast, int saturation);
|
|
void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
|
|
int lastInLumBuf, int lastInChrBuf);
|
|
|
|
SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
|
|
SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
|
|
SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
|
|
SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
|
|
void ff_bfin_get_unscaled_swscale(SwsContext *c);
|
|
|
|
const char *sws_format_name(enum PixelFormat format);
|
|
|
|
#define is16BPS(x) \
|
|
(av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 15)
|
|
|
|
#define is9_OR_10BPS(x) \
|
|
(av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 8 || \
|
|
av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 9)
|
|
|
|
#define isBE(x) \
|
|
(av_pix_fmt_descriptors[x].flags & PIX_FMT_BE)
|
|
|
|
#define isYUV(x) \
|
|
(!(av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB) && \
|
|
av_pix_fmt_descriptors[x].nb_components >= 2)
|
|
|
|
#define isPlanarYUV(x) \
|
|
((av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR) && \
|
|
isYUV(x))
|
|
|
|
#define isRGB(x) \
|
|
(av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB)
|
|
|
|
#if 0 // FIXME
|
|
#define isGray(x) \
|
|
(!(av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) && \
|
|
av_pix_fmt_descriptors[x].nb_components <= 2)
|
|
#else
|
|
#define isGray(x) \
|
|
((x) == PIX_FMT_GRAY8 || \
|
|
(x) == PIX_FMT_Y400A || \
|
|
(x) == PIX_FMT_GRAY16BE || \
|
|
(x) == PIX_FMT_GRAY16LE)
|
|
#endif
|
|
|
|
#define isRGBinInt(x) \
|
|
((x) == PIX_FMT_RGB48BE || \
|
|
(x) == PIX_FMT_RGB48LE || \
|
|
(x) == PIX_FMT_RGB32 || \
|
|
(x) == PIX_FMT_RGB32_1 || \
|
|
(x) == PIX_FMT_RGB24 || \
|
|
(x) == PIX_FMT_RGB565BE || \
|
|
(x) == PIX_FMT_RGB565LE || \
|
|
(x) == PIX_FMT_RGB555BE || \
|
|
(x) == PIX_FMT_RGB555LE || \
|
|
(x) == PIX_FMT_RGB444BE || \
|
|
(x) == PIX_FMT_RGB444LE || \
|
|
(x) == PIX_FMT_RGB8 || \
|
|
(x) == PIX_FMT_RGB4 || \
|
|
(x) == PIX_FMT_RGB4_BYTE || \
|
|
(x) == PIX_FMT_MONOBLACK || \
|
|
(x) == PIX_FMT_MONOWHITE)
|
|
|
|
#define isBGRinInt(x) \
|
|
((x) == PIX_FMT_BGR48BE || \
|
|
(x) == PIX_FMT_BGR48LE || \
|
|
(x) == PIX_FMT_BGR32 || \
|
|
(x) == PIX_FMT_BGR32_1 || \
|
|
(x) == PIX_FMT_BGR24 || \
|
|
(x) == PIX_FMT_BGR565BE || \
|
|
(x) == PIX_FMT_BGR565LE || \
|
|
(x) == PIX_FMT_BGR555BE || \
|
|
(x) == PIX_FMT_BGR555LE || \
|
|
(x) == PIX_FMT_BGR444BE || \
|
|
(x) == PIX_FMT_BGR444LE || \
|
|
(x) == PIX_FMT_BGR8 || \
|
|
(x) == PIX_FMT_BGR4 || \
|
|
(x) == PIX_FMT_BGR4_BYTE || \
|
|
(x) == PIX_FMT_MONOBLACK || \
|
|
(x) == PIX_FMT_MONOWHITE)
|
|
|
|
#define isAnyRGB(x) \
|
|
(isRGBinInt(x) || \
|
|
isBGRinInt(x))
|
|
|
|
#define isALPHA(x) \
|
|
(av_pix_fmt_descriptors[x].nb_components == 2 || \
|
|
av_pix_fmt_descriptors[x].nb_components == 4)
|
|
|
|
#define isPacked(x) \
|
|
((av_pix_fmt_descriptors[x].nb_components >= 2 && \
|
|
!(av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR)) || \
|
|
(x) == PIX_FMT_PAL8)
|
|
|
|
#define isPlanar(x) \
|
|
(av_pix_fmt_descriptors[x].nb_components >= 2 && \
|
|
(av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR))
|
|
|
|
#define isPackedRGB(x) \
|
|
((av_pix_fmt_descriptors[x].flags & \
|
|
(PIX_FMT_PLANAR | PIX_FMT_RGB)) == PIX_FMT_RGB)
|
|
|
|
#define isPlanarRGB(x) \
|
|
((av_pix_fmt_descriptors[x].flags & \
|
|
(PIX_FMT_PLANAR | PIX_FMT_RGB)) == (PIX_FMT_PLANAR | PIX_FMT_RGB))
|
|
|
|
#define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || \
|
|
(av_pix_fmt_descriptors[x].flags & PIX_FMT_PSEUDOPAL) || \
|
|
(x) == PIX_FMT_Y400A)
|
|
|
|
extern const uint64_t ff_dither4[2];
|
|
extern const uint64_t ff_dither8[2];
|
|
|
|
extern const AVClass sws_context_class;
|
|
|
|
/**
|
|
* Set c->swScale to an unscaled converter if one exists for the specific
|
|
* source and destination formats, bit depths, flags, etc.
|
|
*/
|
|
void ff_get_unscaled_swscale(SwsContext *c);
|
|
|
|
void ff_swscale_get_unscaled_altivec(SwsContext *c);
|
|
|
|
/**
|
|
* Return function pointer to fastest main scaler path function depending
|
|
* on architecture and available optimizations.
|
|
*/
|
|
SwsFunc ff_getSwsFunc(SwsContext *c);
|
|
|
|
void ff_sws_init_input_funcs(SwsContext *c);
|
|
void ff_sws_init_output_funcs(SwsContext *c,
|
|
yuv2planar1_fn *yuv2plane1,
|
|
yuv2planarX_fn *yuv2planeX,
|
|
yuv2interleavedX_fn *yuv2nv12cX,
|
|
yuv2packed1_fn *yuv2packed1,
|
|
yuv2packed2_fn *yuv2packed2,
|
|
yuv2packedX_fn *yuv2packedX);
|
|
void ff_sws_init_swScale_altivec(SwsContext *c);
|
|
void ff_sws_init_swScale_mmx(SwsContext *c);
|
|
|
|
#endif /* SWSCALE_SWSCALE_INTERNAL_H */
|