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490 lines
22 KiB
490 lines
22 KiB
/* |
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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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#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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/* 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 **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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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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#define UV_OFF "11*8+4*4*256*3+48" |
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#define UV_OFFx2 "11*8+4*4*256*3+56" |
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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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DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes |
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DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes |
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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 **chrUSrc, |
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const int16_t **chrVSrc, 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 *chrUSrc, |
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const int16_t *chrVSrc, 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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int dstW, int 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 **chrUSrc, |
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const int16_t **chrVSrc, 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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int dstW, int 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 *ubuf0, const uint16_t *ubuf1, |
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const uint16_t *vbuf0, const uint16_t *vbuf1, |
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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 *ubuf0, const uint16_t *ubuf1, |
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const uint16_t *vbuf0, const uint16_t *vbuf1, |
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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 **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 dstY); |
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void (*lumToYV12)(uint8_t *dst, const uint8_t *src, |
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int 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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int 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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int 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, int 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 *dst1, int16_t *dst2, int 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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int 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 *dst1, uint16_t *dst2, 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, const int16_t *lumFilter, |
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const int16_t **lumSrc, int lumFilterSize, |
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const int16_t *chrFilter, const int16_t **chrUSrc, |
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const int16_t **chrVSrc, 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_BGR48BE \ |
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|| (x)==PIX_FMT_BGR48LE \ |
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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 is9_OR_10BPS(x) ( \ |
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(x)==PIX_FMT_YUV420P9LE \ |
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|| (x)==PIX_FMT_YUV420P9BE \ |
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|| (x)==PIX_FMT_YUV420P10LE \ |
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|| (x)==PIX_FMT_YUV420P10BE \ |
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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_YUV420P9LE \ |
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|| (x)==PIX_FMT_YUV420P10LE \ |
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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_YUV420P9BE \ |
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|| (x)==PIX_FMT_YUV420P10BE \ |
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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_Y400A \ |
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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 \ |
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|| (x)==PIX_FMT_RGB565BE \ |
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|| (x)==PIX_FMT_RGB565LE \ |
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|| (x)==PIX_FMT_RGB555BE \ |
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|| (x)==PIX_FMT_RGB555LE \ |
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|| (x)==PIX_FMT_RGB444BE \ |
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|| (x)==PIX_FMT_RGB444LE \ |
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|| (x)==PIX_FMT_RGB8 \ |
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|| (x)==PIX_FMT_RGB4 \ |
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|| (x)==PIX_FMT_RGB4_BYTE \ |
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|| (x)==PIX_FMT_MONOBLACK \ |
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|| (x)==PIX_FMT_MONOWHITE \ |
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) |
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#define isBGRinInt(x) ( \ |
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(x)==PIX_FMT_BGR48BE \ |
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|| (x)==PIX_FMT_BGR48LE \ |
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|| (x)==PIX_FMT_BGR32 \ |
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|| (x)==PIX_FMT_BGR32_1 \ |
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|| (x)==PIX_FMT_BGR24 \ |
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|| (x)==PIX_FMT_BGR565BE \ |
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|| (x)==PIX_FMT_BGR565LE \ |
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|| (x)==PIX_FMT_BGR555BE \ |
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|| (x)==PIX_FMT_BGR555LE \ |
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|| (x)==PIX_FMT_BGR444BE \ |
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|| (x)==PIX_FMT_BGR444LE \ |
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|| (x)==PIX_FMT_BGR8 \ |
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|| (x)==PIX_FMT_BGR4 \ |
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|| (x)==PIX_FMT_BGR4_BYTE \ |
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|| (x)==PIX_FMT_MONOBLACK \ |
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|| (x)==PIX_FMT_MONOWHITE \ |
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) |
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#define isRGBinBytes(x) ( \ |
|
(x)==PIX_FMT_RGB48BE \ |
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|| (x)==PIX_FMT_RGB48LE \ |
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|| (x)==PIX_FMT_RGBA \ |
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|| (x)==PIX_FMT_ARGB \ |
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|| (x)==PIX_FMT_RGB24 \ |
|
) |
|
#define isBGRinBytes(x) ( \ |
|
(x)==PIX_FMT_BGR48BE \ |
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|| (x)==PIX_FMT_BGR48LE \ |
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|| (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_Y400A \ |
|
|| (x)==PIX_FMT_YUVA420P \ |
|
) |
|
#define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A) |
|
|
|
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); |
|
|
|
void ff_swscale_get_unscaled_altivec(SwsContext *c); |
|
|
|
/** |
|
* 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 */
|
|
|