mirror of https://git.ffmpeg.org/ffmpeg.git
470 lines
20 KiB
C
470 lines
20 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 FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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#define STR(s) AV_TOSTRING(s) //AV_STRINGIFY is too long
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#define MAX_FILTER_SIZE 256
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#if ARCH_X86
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#define VOFW 5120
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#else
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#define VOFW 2048 // faster on PPC and not tested on others
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#endif
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#define VOF (VOFW*2)
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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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/* 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 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 **chrPixBuf; ///< 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[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
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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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int16_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
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int16_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
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int16_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
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int16_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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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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#if HAVE_ALTIVEC
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vector signed short CY;
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vector signed short CRV;
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vector signed short CBU;
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vector signed short CGU;
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vector signed short CGV;
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vector signed short OY;
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vector unsigned short CSHIFT;
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vector signed short *vYCoeffsBank, *vCCoeffsBank;
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#endif
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#if ARCH_BFIN
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DECLARE_ALIGNED(4, uint32_t, oy);
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DECLARE_ALIGNED(4, uint32_t, oc);
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DECLARE_ALIGNED(4, uint32_t, zero);
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DECLARE_ALIGNED(4, uint32_t, cy);
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DECLARE_ALIGNED(4, uint32_t, crv);
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DECLARE_ALIGNED(4, uint32_t, rmask);
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DECLARE_ALIGNED(4, uint32_t, cbu);
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DECLARE_ALIGNED(4, uint32_t, bmask);
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DECLARE_ALIGNED(4, uint32_t, cgu);
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DECLARE_ALIGNED(4, uint32_t, cgv);
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DECLARE_ALIGNED(4, uint32_t, gmask);
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#endif
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#if HAVE_VIS
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DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
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#endif
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/* function pointers for swScale() */
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void (*yuv2nv12X )(struct SwsContext *c,
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const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
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const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
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uint8_t *dest, uint8_t *uDest,
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int dstW, int chrDstW, int dstFormat);
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void (*yuv2yuv1 )(struct SwsContext *c,
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const int16_t *lumSrc, const int16_t *chrSrc, const int16_t *alpSrc,
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uint8_t *dest,
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uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
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long dstW, long chrDstW);
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void (*yuv2yuvX )(struct SwsContext *c,
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const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
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const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
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const int16_t **alpSrc,
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uint8_t *dest,
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uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
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long dstW, long chrDstW);
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void (*yuv2packed1)(struct SwsContext *c,
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const uint16_t *buf0,
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const uint16_t *uvbuf0, const uint16_t *uvbuf1,
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const uint16_t *abuf0,
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uint8_t *dest,
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int dstW, int uvalpha, int dstFormat, int flags, int y);
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void (*yuv2packed2)(struct SwsContext *c,
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const uint16_t *buf0, const uint16_t *buf1,
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const uint16_t *uvbuf0, const uint16_t *uvbuf1,
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const uint16_t *abuf0, const uint16_t *abuf1,
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uint8_t *dest,
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int dstW, int yalpha, int uvalpha, int y);
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void (*yuv2packedX)(struct SwsContext *c,
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const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
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const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
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const int16_t **alpSrc, uint8_t *dest,
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long dstW, long dstY);
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void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
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long width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
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void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
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long width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
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void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
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const uint8_t *src1, const uint8_t *src2,
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long width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
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void (*hyscale_fast)(struct SwsContext *c,
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int16_t *dst, long dstWidth,
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const uint8_t *src, int srcW, int xInc);
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void (*hcscale_fast)(struct SwsContext *c,
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int16_t *dst, long dstWidth,
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const uint8_t *src1, const uint8_t *src2,
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int srcW, int xInc);
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void (*hScale)(int16_t *dst, int dstW, const uint8_t *src, int srcW,
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int xInc, const int16_t *filter, const int16_t *filterPos,
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long filterSize);
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void (*lumConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
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void (*chrConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for chroma planes if needed.
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int lumSrcOffset; ///< Offset given to luma src pointers passed to horizontal input functions.
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int chrSrcOffset; ///< Offset given to chroma src pointers passed to horizontal input functions.
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int alpSrcOffset; ///< Offset given to alpha src pointers passed to horizontal input functions.
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int needs_hcscale; ///< Set if there are chroma planes to be converted.
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} SwsContext;
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//FIXME check init (where 0)
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SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
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int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
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int fullRange, int brightness,
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int contrast, int saturation);
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void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
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int brightness, int contrast, int saturation);
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SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
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SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
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SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
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SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
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SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
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void ff_bfin_get_unscaled_swscale(SwsContext *c);
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void ff_yuv2packedX_altivec(SwsContext *c,
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const int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
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const int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
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uint8_t *dest, int dstW, int dstY);
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const char *sws_format_name(enum PixelFormat format);
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//FIXME replace this with something faster
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#define is16BPS(x) ( \
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(x)==PIX_FMT_GRAY16BE \
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|| (x)==PIX_FMT_GRAY16LE \
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|| (x)==PIX_FMT_RGB48BE \
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|| (x)==PIX_FMT_RGB48LE \
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|| (x)==PIX_FMT_YUV420P16LE \
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|| (x)==PIX_FMT_YUV422P16LE \
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|| (x)==PIX_FMT_YUV444P16LE \
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|| (x)==PIX_FMT_YUV420P16BE \
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|| (x)==PIX_FMT_YUV422P16BE \
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|| (x)==PIX_FMT_YUV444P16BE \
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)
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#define isBE(x) ((x)&1)
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#define isPlanar8YUV(x) ( \
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(x)==PIX_FMT_YUV410P \
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|| (x)==PIX_FMT_YUV420P \
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|| (x)==PIX_FMT_YUVA420P \
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|| (x)==PIX_FMT_YUV411P \
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|| (x)==PIX_FMT_YUV422P \
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|| (x)==PIX_FMT_YUV444P \
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|| (x)==PIX_FMT_YUV440P \
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|| (x)==PIX_FMT_NV12 \
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|| (x)==PIX_FMT_NV21 \
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)
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#define isPlanarYUV(x) ( \
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isPlanar8YUV(x) \
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|| (x)==PIX_FMT_YUV420P16LE \
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|| (x)==PIX_FMT_YUV422P16LE \
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|| (x)==PIX_FMT_YUV444P16LE \
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|| (x)==PIX_FMT_YUV420P16BE \
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|| (x)==PIX_FMT_YUV422P16BE \
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|| (x)==PIX_FMT_YUV444P16BE \
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)
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#define isYUV(x) ( \
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(x)==PIX_FMT_UYVY422 \
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|| (x)==PIX_FMT_YUYV422 \
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|| isPlanarYUV(x) \
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)
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#define isGray(x) ( \
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(x)==PIX_FMT_GRAY8 \
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|| (x)==PIX_FMT_GRAY16BE \
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|| (x)==PIX_FMT_GRAY16LE \
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)
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#define isGray16(x) ( \
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(x)==PIX_FMT_GRAY16BE \
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|| (x)==PIX_FMT_GRAY16LE \
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)
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#define isRGBinInt(x) ( \
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(x)==PIX_FMT_RGB48BE \
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|| (x)==PIX_FMT_RGB48LE \
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|| (x)==PIX_FMT_RGB32 \
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|| (x)==PIX_FMT_RGB32_1 \
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|
|| (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_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 isRGBinBytes(x) ( \
|
|
(x)==PIX_FMT_RGB48BE \
|
|
|| (x)==PIX_FMT_RGB48LE \
|
|
|| (x)==PIX_FMT_RGBA \
|
|
|| (x)==PIX_FMT_ARGB \
|
|
|| (x)==PIX_FMT_RGB24 \
|
|
)
|
|
#define isBGRinBytes(x) ( \
|
|
(x)==PIX_FMT_BGRA \
|
|
|| (x)==PIX_FMT_ABGR \
|
|
|| (x)==PIX_FMT_BGR24 \
|
|
)
|
|
#define isAnyRGB(x) ( \
|
|
isRGBinInt(x) \
|
|
|| isBGRinInt(x) \
|
|
)
|
|
#define isALPHA(x) ( \
|
|
(x)==PIX_FMT_BGR32 \
|
|
|| (x)==PIX_FMT_BGR32_1 \
|
|
|| (x)==PIX_FMT_RGB32 \
|
|
|| (x)==PIX_FMT_RGB32_1 \
|
|
|| (x)==PIX_FMT_YUVA420P \
|
|
)
|
|
#define usePal(x) (av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL)
|
|
|
|
extern const uint64_t ff_dither4[2];
|
|
extern const uint64_t ff_dither8[2];
|
|
|
|
extern const AVClass sws_context_class;
|
|
|
|
/**
|
|
* Sets 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);
|
|
|
|
/**
|
|
* Returns the SWS_CPU_CAPS for the optimized code compiled into swscale.
|
|
*/
|
|
int ff_hardcodedcpuflags(void);
|
|
|
|
/**
|
|
* Returns function pointer to fastest main scaler path function depending
|
|
* on architecture and available optimizations.
|
|
*/
|
|
SwsFunc ff_getSwsFunc(SwsContext *c);
|
|
|
|
#endif /* SWSCALE_SWSCALE_INTERNAL_H */
|