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- /*
- * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #ifndef SWSCALE_SWSCALE_INTERNAL_H
- #define SWSCALE_SWSCALE_INTERNAL_H
- #include "config.h"
- #if HAVE_ALTIVEC_H
- #include <altivec.h>
- #endif
- #include "version.h"
- #include "libavutil/avassert.h"
- #include "libavutil/avutil.h"
- #include "libavutil/common.h"
- #include "libavutil/intreadwrite.h"
- #include "libavutil/log.h"
- #include "libavutil/pixfmt.h"
- #include "libavutil/pixdesc.h"
- #define STR(s) AV_TOSTRING(s) // AV_STRINGIFY is too long
- #define YUVRGB_TABLE_HEADROOM 512
- #define YUVRGB_TABLE_LUMA_HEADROOM 512
- #define MAX_FILTER_SIZE SWS_MAX_FILTER_SIZE
- #define DITHER1XBPP
- #if HAVE_BIGENDIAN
- #define ALT32_CORR (-1)
- #else
- #define ALT32_CORR 1
- #endif
- #if ARCH_X86_64
- # define APCK_PTR2 8
- # define APCK_COEF 16
- # define APCK_SIZE 24
- #else
- # define APCK_PTR2 4
- # define APCK_COEF 8
- # define APCK_SIZE 16
- #endif
- #define RETCODE_USE_CASCADE -12345
- struct SwsContext;
- typedef enum SwsDither {
- SWS_DITHER_NONE = 0,
- SWS_DITHER_AUTO,
- SWS_DITHER_BAYER,
- SWS_DITHER_ED,
- SWS_DITHER_A_DITHER,
- SWS_DITHER_X_DITHER,
- NB_SWS_DITHER,
- } SwsDither;
- typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t *src[],
- int srcStride[], int srcSliceY, int srcSliceH,
- uint8_t *dst[], int dstStride[]);
- /**
- * Write one line of horizontally scaled data to planar output
- * without any additional vertical scaling (or point-scaling).
- *
- * @param src scaled source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param dest pointer to the output plane. For >8bit
- * output, this is in uint16_t
- * @param dstW width of destination in pixels
- * @param dither ordered dither array of type int16_t and size 8
- * @param offset Dither offset
- */
- typedef void (*yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW,
- const uint8_t *dither, int offset);
- /**
- * Write one line of horizontally scaled data to planar output
- * with multi-point vertical scaling between input pixels.
- *
- * @param filter vertical luma/alpha scaling coefficients, 12bit [0,4096]
- * @param src scaled luma (Y) or alpha (A) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param filterSize number of vertical input lines to scale
- * @param dest pointer to output plane. For >8bit
- * output, this is in uint16_t
- * @param dstW width of destination pixels
- * @param offset Dither offset
- */
- typedef void (*yuv2planarX_fn)(const int16_t *filter, int filterSize,
- const int16_t **src, uint8_t *dest, int dstW,
- const uint8_t *dither, int offset);
- /**
- * Write one line of horizontally scaled chroma to interleaved output
- * with multi-point vertical scaling between input pixels.
- *
- * @param c SWS scaling context
- * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrFilterSize number of vertical chroma input lines to scale
- * @param dest pointer to the output plane. For >8bit
- * output, this is in uint16_t
- * @param dstW width of chroma planes
- */
- typedef void (*yuv2interleavedX_fn)(struct SwsContext *c,
- const int16_t *chrFilter,
- int chrFilterSize,
- const int16_t **chrUSrc,
- const int16_t **chrVSrc,
- uint8_t *dest, int dstW);
- /**
- * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
- * output without any additional vertical scaling (or point-scaling). Note
- * that this function may do chroma scaling, see the "uvalpha" argument.
- *
- * @param c SWS scaling context
- * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param dest pointer to the output plane. For 16bit output, this is
- * uint16_t
- * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
- * to write into dest[]
- * @param uvalpha chroma scaling coefficient for the second line of chroma
- * pixels, either 2048 or 0. If 0, one chroma input is used
- * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
- * is set, it generates 1 output pixel). If 2048, two chroma
- * input pixels should be averaged for 2 output pixels (this
- * only happens if SWS_FLAG_FULL_CHR_INT is not set)
- * @param y vertical line number for this output. This does not need
- * to be used to calculate the offset in the destination,
- * but can be used to generate comfort noise using dithering
- * for some output formats.
- */
- typedef void (*yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc,
- const int16_t *chrUSrc[2],
- const int16_t *chrVSrc[2],
- const int16_t *alpSrc, uint8_t *dest,
- int dstW, int uvalpha, int y);
- /**
- * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
- * output by doing bilinear scaling between two input lines.
- *
- * @param c SWS scaling context
- * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param dest pointer to the output plane. For 16bit output, this is
- * uint16_t
- * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
- * to write into dest[]
- * @param yalpha luma/alpha scaling coefficients for the second input line.
- * The first line's coefficients can be calculated by using
- * 4096 - yalpha
- * @param uvalpha chroma scaling coefficient for the second input line. The
- * first line's coefficients can be calculated by using
- * 4096 - uvalpha
- * @param y vertical line number for this output. This does not need
- * to be used to calculate the offset in the destination,
- * but can be used to generate comfort noise using dithering
- * for some output formats.
- */
- typedef void (*yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2],
- const int16_t *chrUSrc[2],
- const int16_t *chrVSrc[2],
- const int16_t *alpSrc[2],
- uint8_t *dest,
- int dstW, int yalpha, int uvalpha, int y);
- /**
- * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
- * output by doing multi-point vertical scaling between input pixels.
- *
- * @param c SWS scaling context
- * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
- * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param lumFilterSize number of vertical luma/alpha input lines to scale
- * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrFilterSize number of vertical chroma input lines to scale
- * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param dest pointer to the output plane. For 16bit output, this is
- * uint16_t
- * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
- * to write into dest[]
- * @param y vertical line number for this output. This does not need
- * to be used to calculate the offset in the destination,
- * but can be used to generate comfort noise using dithering
- * or some output formats.
- */
- typedef void (*yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter,
- const int16_t **lumSrc, int lumFilterSize,
- const int16_t *chrFilter,
- const int16_t **chrUSrc,
- const int16_t **chrVSrc, int chrFilterSize,
- const int16_t **alpSrc, uint8_t *dest,
- int dstW, int y);
- /**
- * Write one line of horizontally scaled Y/U/V/A to YUV/RGB
- * output by doing multi-point vertical scaling between input pixels.
- *
- * @param c SWS scaling context
- * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
- * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param lumFilterSize number of vertical luma/alpha input lines to scale
- * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrFilterSize number of vertical chroma input lines to scale
- * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param dest pointer to the output planes. For 16bit output, this is
- * uint16_t
- * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
- * to write into dest[]
- * @param y vertical line number for this output. This does not need
- * to be used to calculate the offset in the destination,
- * but can be used to generate comfort noise using dithering
- * or some output formats.
- */
- typedef void (*yuv2anyX_fn)(struct SwsContext *c, const int16_t *lumFilter,
- const int16_t **lumSrc, int lumFilterSize,
- const int16_t *chrFilter,
- const int16_t **chrUSrc,
- const int16_t **chrVSrc, int chrFilterSize,
- const int16_t **alpSrc, uint8_t **dest,
- int dstW, int y);
- /* This struct should be aligned on at least a 32-byte boundary. */
- typedef struct SwsContext {
- /**
- * info on struct for av_log
- */
- const AVClass *av_class;
- /**
- * Note that src, dst, srcStride, dstStride will be copied in the
- * sws_scale() wrapper so they can be freely modified here.
- */
- SwsFunc swscale;
- int srcW; ///< Width of source luma/alpha planes.
- int srcH; ///< Height of source luma/alpha planes.
- int dstH; ///< Height of destination luma/alpha planes.
- int chrSrcW; ///< Width of source chroma planes.
- int chrSrcH; ///< Height of source chroma planes.
- int chrDstW; ///< Width of destination chroma planes.
- int chrDstH; ///< Height of destination chroma planes.
- int lumXInc, chrXInc;
- int lumYInc, chrYInc;
- enum AVPixelFormat dstFormat; ///< Destination pixel format.
- enum AVPixelFormat srcFormat; ///< Source pixel format.
- int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
- int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
- int dstBpc, srcBpc;
- int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
- int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
- int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
- int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
- int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
- int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
- double param[2]; ///< Input parameters for scaling algorithms that need them.
- /* The cascaded_* fields allow spliting a scaler task into multiple
- * sequential steps, this is for example used to limit the maximum
- * downscaling factor that needs to be supported in one scaler.
- */
- struct SwsContext *cascaded_context[2];
- int cascaded_tmpStride[4];
- uint8_t *cascaded_tmp[4];
- uint32_t pal_yuv[256];
- uint32_t pal_rgb[256];
- /**
- * @name Scaled horizontal lines ring buffer.
- * The horizontal scaler keeps just enough scaled lines in a ring buffer
- * so they may be passed to the vertical scaler. The pointers to the
- * allocated buffers for each line are duplicated in sequence in the ring
- * buffer to simplify indexing and avoid wrapping around between lines
- * inside the vertical scaler code. The wrapping is done before the
- * vertical scaler is called.
- */
- //@{
- int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
- int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
- int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
- int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
- int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
- int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
- int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
- int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
- int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
- int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
- //@}
- uint8_t *formatConvBuffer;
- /**
- * @name Horizontal and vertical filters.
- * To better understand the following fields, here is a pseudo-code of
- * their usage in filtering a horizontal line:
- * @code
- * for (i = 0; i < width; i++) {
- * dst[i] = 0;
- * for (j = 0; j < filterSize; j++)
- * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
- * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
- * }
- * @endcode
- */
- //@{
- int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
- int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
- int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
- int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
- int32_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
- int32_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
- int32_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
- int32_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
- int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
- int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
- int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
- int vChrFilterSize; ///< Vertical filter size for chroma pixels.
- //@}
- int lumMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes.
- int chrMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.
- uint8_t *lumMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
- uint8_t *chrMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
- int canMMXEXTBeUsed;
- int dstY; ///< Last destination vertical line output from last slice.
- int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
- void *yuvTable; // pointer to the yuv->rgb table start so it can be freed()
- // alignment ensures the offset can be added in a single
- // instruction on e.g. ARM
- DECLARE_ALIGNED(16, int, table_gV)[256 + 2*YUVRGB_TABLE_HEADROOM];
- uint8_t *table_rV[256 + 2*YUVRGB_TABLE_HEADROOM];
- uint8_t *table_gU[256 + 2*YUVRGB_TABLE_HEADROOM];
- uint8_t *table_bU[256 + 2*YUVRGB_TABLE_HEADROOM];
- DECLARE_ALIGNED(16, int32_t, input_rgb2yuv_table)[16+40*4]; // This table can contain both C and SIMD formatted values, the C vales are always at the XY_IDX points
- #define RY_IDX 0
- #define GY_IDX 1
- #define BY_IDX 2
- #define RU_IDX 3
- #define GU_IDX 4
- #define BU_IDX 5
- #define RV_IDX 6
- #define GV_IDX 7
- #define BV_IDX 8
- #define RGB2YUV_SHIFT 15
- int *dither_error[4];
- //Colorspace stuff
- int contrast, brightness, saturation; // for sws_getColorspaceDetails
- int srcColorspaceTable[4];
- int dstColorspaceTable[4];
- int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
- int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
- int src0Alpha;
- int dst0Alpha;
- int srcXYZ;
- int dstXYZ;
- int src_h_chr_pos;
- int dst_h_chr_pos;
- int src_v_chr_pos;
- int dst_v_chr_pos;
- int yuv2rgb_y_offset;
- int yuv2rgb_y_coeff;
- int yuv2rgb_v2r_coeff;
- int yuv2rgb_v2g_coeff;
- int yuv2rgb_u2g_coeff;
- int yuv2rgb_u2b_coeff;
- #define RED_DITHER "0*8"
- #define GREEN_DITHER "1*8"
- #define BLUE_DITHER "2*8"
- #define Y_COEFF "3*8"
- #define VR_COEFF "4*8"
- #define UB_COEFF "5*8"
- #define VG_COEFF "6*8"
- #define UG_COEFF "7*8"
- #define Y_OFFSET "8*8"
- #define U_OFFSET "9*8"
- #define V_OFFSET "10*8"
- #define LUM_MMX_FILTER_OFFSET "11*8"
- #define CHR_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)
- #define DSTW_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2"
- #define ESP_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+8"
- #define VROUNDER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+16"
- #define U_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+24"
- #define V_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+32"
- #define Y_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+40"
- #define ALP_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+48"
- #define UV_OFF_PX "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+48"
- #define UV_OFF_BYTE "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+56"
- #define DITHER16 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+64"
- #define DITHER32 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+80"
- #define DITHER32_INT (11*8+4*4*MAX_FILTER_SIZE*3+80) // value equal to above, used for checking that the struct hasn't been changed by mistake
- DECLARE_ALIGNED(8, uint64_t, redDither);
- DECLARE_ALIGNED(8, uint64_t, greenDither);
- DECLARE_ALIGNED(8, uint64_t, blueDither);
- DECLARE_ALIGNED(8, uint64_t, yCoeff);
- DECLARE_ALIGNED(8, uint64_t, vrCoeff);
- DECLARE_ALIGNED(8, uint64_t, ubCoeff);
- DECLARE_ALIGNED(8, uint64_t, vgCoeff);
- DECLARE_ALIGNED(8, uint64_t, ugCoeff);
- DECLARE_ALIGNED(8, uint64_t, yOffset);
- DECLARE_ALIGNED(8, uint64_t, uOffset);
- DECLARE_ALIGNED(8, uint64_t, vOffset);
- int32_t lumMmxFilter[4 * MAX_FILTER_SIZE];
- int32_t chrMmxFilter[4 * MAX_FILTER_SIZE];
- int dstW; ///< Width of destination luma/alpha planes.
- DECLARE_ALIGNED(8, uint64_t, esp);
- DECLARE_ALIGNED(8, uint64_t, vRounder);
- DECLARE_ALIGNED(8, uint64_t, u_temp);
- DECLARE_ALIGNED(8, uint64_t, v_temp);
- DECLARE_ALIGNED(8, uint64_t, y_temp);
- int32_t alpMmxFilter[4 * MAX_FILTER_SIZE];
- // alignment of these values is not necessary, but merely here
- // to maintain the same offset across x8632 and x86-64. Once we
- // use proper offset macros in the asm, they can be removed.
- DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
- DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
- DECLARE_ALIGNED(8, uint16_t, dither16)[8];
- DECLARE_ALIGNED(8, uint32_t, dither32)[8];
- const uint8_t *chrDither8, *lumDither8;
- #if HAVE_ALTIVEC
- vector signed short CY;
- 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
- int use_mmx_vfilter;
- /* pre defined color-spaces gamma */
- #define XYZ_GAMMA (2.6f)
- #define RGB_GAMMA (2.2f)
- int16_t *xyzgamma;
- int16_t *rgbgamma;
- int16_t *xyzgammainv;
- int16_t *rgbgammainv;
- int16_t xyz2rgb_matrix[3][4];
- int16_t rgb2xyz_matrix[3][4];
- /* function pointers for swscale() */
- yuv2planar1_fn yuv2plane1;
- yuv2planarX_fn yuv2planeX;
- yuv2interleavedX_fn yuv2nv12cX;
- yuv2packed1_fn yuv2packed1;
- yuv2packed2_fn yuv2packed2;
- yuv2packedX_fn yuv2packedX;
- yuv2anyX_fn yuv2anyX;
- /// Unscaled conversion of luma plane to YV12 for horizontal scaler.
- void (*lumToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
- int width, uint32_t *pal);
- /// Unscaled conversion of alpha plane to YV12 for horizontal scaler.
- void (*alpToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
- 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, const uint8_t *src3,
- int width, uint32_t *pal);
- /**
- * Functions to read planar input, such as planar RGB, and convert
- * internally to Y/UV/A.
- */
- /** @{ */
- void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv);
- void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4],
- int width, int32_t *rgb2yuv);
- void (*readAlpPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv);
- /** @} */
- /**
- * 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.
- SwsDither dither;
- } 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_ppc(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);
- av_cold void ff_sws_init_range_convert(SwsContext *c);
- SwsFunc ff_yuv2rgb_init_x86(SwsContext *c);
- SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c);
- #if FF_API_SWS_FORMAT_NAME
- /**
- * @deprecated Use av_get_pix_fmt_name() instead.
- */
- attribute_deprecated
- const char *sws_format_name(enum AVPixelFormat format);
- #endif
- static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return desc->comp[0].depth_minus1 == 15;
- }
- static av_always_inline int is9_OR_10BPS(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return desc->comp[0].depth_minus1 >= 8 && desc->comp[0].depth_minus1 <= 13;
- }
- #define isNBPS(x) is9_OR_10BPS(x)
- static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return desc->flags & AV_PIX_FMT_FLAG_BE;
- }
- static av_always_inline int isYUV(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
- }
- static av_always_inline int isPlanarYUV(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) && isYUV(pix_fmt));
- }
- static av_always_inline int isRGB(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return (desc->flags & AV_PIX_FMT_FLAG_RGB);
- }
- #if 0 // FIXME
- #define isGray(x) \
- (!(av_pix_fmt_desc_get(x)->flags & AV_PIX_FMT_FLAG_PAL) && \
- av_pix_fmt_desc_get(x)->nb_components <= 2)
- #else
- #define isGray(x) \
- ((x) == AV_PIX_FMT_GRAY8 || \
- (x) == AV_PIX_FMT_YA8 || \
- (x) == AV_PIX_FMT_GRAY16BE || \
- (x) == AV_PIX_FMT_GRAY16LE || \
- (x) == AV_PIX_FMT_YA16BE || \
- (x) == AV_PIX_FMT_YA16LE)
- #endif
- #define isRGBinInt(x) \
- ( \
- (x) == AV_PIX_FMT_RGB48BE || \
- (x) == AV_PIX_FMT_RGB48LE || \
- (x) == AV_PIX_FMT_RGB32 || \
- (x) == AV_PIX_FMT_RGB32_1 || \
- (x) == AV_PIX_FMT_RGB24 || \
- (x) == AV_PIX_FMT_RGB565BE || \
- (x) == AV_PIX_FMT_RGB565LE || \
- (x) == AV_PIX_FMT_RGB555BE || \
- (x) == AV_PIX_FMT_RGB555LE || \
- (x) == AV_PIX_FMT_RGB444BE || \
- (x) == AV_PIX_FMT_RGB444LE || \
- (x) == AV_PIX_FMT_RGB8 || \
- (x) == AV_PIX_FMT_RGB4 || \
- (x) == AV_PIX_FMT_RGB4_BYTE || \
- (x) == AV_PIX_FMT_RGBA64BE || \
- (x) == AV_PIX_FMT_RGBA64LE || \
- (x) == AV_PIX_FMT_MONOBLACK || \
- (x) == AV_PIX_FMT_MONOWHITE \
- )
- #define isBGRinInt(x) \
- ( \
- (x) == AV_PIX_FMT_BGR48BE || \
- (x) == AV_PIX_FMT_BGR48LE || \
- (x) == AV_PIX_FMT_BGR32 || \
- (x) == AV_PIX_FMT_BGR32_1 || \
- (x) == AV_PIX_FMT_BGR24 || \
- (x) == AV_PIX_FMT_BGR565BE || \
- (x) == AV_PIX_FMT_BGR565LE || \
- (x) == AV_PIX_FMT_BGR555BE || \
- (x) == AV_PIX_FMT_BGR555LE || \
- (x) == AV_PIX_FMT_BGR444BE || \
- (x) == AV_PIX_FMT_BGR444LE || \
- (x) == AV_PIX_FMT_BGR8 || \
- (x) == AV_PIX_FMT_BGR4 || \
- (x) == AV_PIX_FMT_BGR4_BYTE || \
- (x) == AV_PIX_FMT_BGRA64BE || \
- (x) == AV_PIX_FMT_BGRA64LE || \
- (x) == AV_PIX_FMT_MONOBLACK || \
- (x) == AV_PIX_FMT_MONOWHITE \
- )
- #define isRGBinBytes(x) ( \
- (x) == AV_PIX_FMT_RGB48BE \
- || (x) == AV_PIX_FMT_RGB48LE \
- || (x) == AV_PIX_FMT_RGBA64BE \
- || (x) == AV_PIX_FMT_RGBA64LE \
- || (x) == AV_PIX_FMT_RGBA \
- || (x) == AV_PIX_FMT_ARGB \
- || (x) == AV_PIX_FMT_RGB24 \
- )
- #define isBGRinBytes(x) ( \
- (x) == AV_PIX_FMT_BGR48BE \
- || (x) == AV_PIX_FMT_BGR48LE \
- || (x) == AV_PIX_FMT_BGRA64BE \
- || (x) == AV_PIX_FMT_BGRA64LE \
- || (x) == AV_PIX_FMT_BGRA \
- || (x) == AV_PIX_FMT_ABGR \
- || (x) == AV_PIX_FMT_BGR24 \
- )
- #define isBayer(x) ( \
- (x)==AV_PIX_FMT_BAYER_BGGR8 \
- || (x)==AV_PIX_FMT_BAYER_BGGR16LE \
- || (x)==AV_PIX_FMT_BAYER_BGGR16BE \
- || (x)==AV_PIX_FMT_BAYER_RGGB8 \
- || (x)==AV_PIX_FMT_BAYER_RGGB16LE \
- || (x)==AV_PIX_FMT_BAYER_RGGB16BE \
- || (x)==AV_PIX_FMT_BAYER_GBRG8 \
- || (x)==AV_PIX_FMT_BAYER_GBRG16LE \
- || (x)==AV_PIX_FMT_BAYER_GBRG16BE \
- || (x)==AV_PIX_FMT_BAYER_GRBG8 \
- || (x)==AV_PIX_FMT_BAYER_GRBG16LE \
- || (x)==AV_PIX_FMT_BAYER_GRBG16BE \
- )
- #define isAnyRGB(x) \
- ( \
- isBayer(x) || \
- isRGBinInt(x) || \
- isBGRinInt(x) || \
- isRGB(x) \
- )
- static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- if (pix_fmt == AV_PIX_FMT_PAL8)
- return 1;
- return desc->flags & AV_PIX_FMT_FLAG_ALPHA;
- }
- #if 1
- #define isPacked(x) ( \
- (x)==AV_PIX_FMT_PAL8 \
- || (x)==AV_PIX_FMT_YUYV422 \
- || (x)==AV_PIX_FMT_YVYU422 \
- || (x)==AV_PIX_FMT_UYVY422 \
- || (x)==AV_PIX_FMT_YA8 \
- || (x)==AV_PIX_FMT_YA16LE \
- || (x)==AV_PIX_FMT_YA16BE \
- || isRGBinInt(x) \
- || isBGRinInt(x) \
- )
- #else
- static av_always_inline int isPacked(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return ((desc->nb_components >= 2 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) ||
- pix_fmt == AV_PIX_FMT_PAL8);
- }
- #endif
- static av_always_inline int isPlanar(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return (desc->nb_components >= 2 && (desc->flags & AV_PIX_FMT_FLAG_PLANAR));
- }
- static av_always_inline int isPackedRGB(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) == AV_PIX_FMT_FLAG_RGB);
- }
- static av_always_inline int isPlanarRGB(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) ==
- (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB));
- }
- static av_always_inline int usePal(enum AVPixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- av_assert0(desc);
- return (desc->flags & AV_PIX_FMT_FLAG_PAL) || (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL);
- }
- extern const uint64_t ff_dither4[2];
- extern const uint64_t ff_dither8[2];
- extern const uint8_t ff_dither_2x2_4[3][8];
- extern const uint8_t ff_dither_2x2_8[3][8];
- extern const uint8_t ff_dither_4x4_16[5][8];
- extern const uint8_t ff_dither_8x8_32[9][8];
- extern const uint8_t ff_dither_8x8_73[9][8];
- extern const uint8_t ff_dither_8x8_128[9][8];
- extern const uint8_t ff_dither_8x8_220[9][8];
- extern const int32_t ff_yuv2rgb_coeffs[8][4];
- 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_get_unscaled_swscale_ppc(SwsContext *c);
- void ff_get_unscaled_swscale_arm(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,
- yuv2anyX_fn *yuv2anyX);
- void ff_sws_init_swscale_ppc(SwsContext *c);
- void ff_sws_init_swscale_x86(SwsContext *c);
- void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
- const uint8_t *src, int srcW, int xInc);
- void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
- int dstWidth, const uint8_t *src1,
- const uint8_t *src2, int srcW, int xInc);
- int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode,
- int16_t *filter, int32_t *filterPos,
- int numSplits);
- void ff_hyscale_fast_mmxext(SwsContext *c, int16_t *dst,
- int dstWidth, const uint8_t *src,
- int srcW, int xInc);
- void ff_hcscale_fast_mmxext(SwsContext *c, int16_t *dst1, int16_t *dst2,
- int dstWidth, const uint8_t *src1,
- const uint8_t *src2, int srcW, int xInc);
- static inline void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
- int alpha, int bits, const int big_endian)
- {
- int i, j;
- uint8_t *ptr = plane + stride * y;
- int v = alpha ? 0xFFFF>>(15-bits) : (1<<bits);
- for (i = 0; i < height; i++) {
- #define FILL(wfunc) \
- for (j = 0; j < width; j++) {\
- wfunc(ptr+2*j, v);\
- }
- if (big_endian) {
- FILL(AV_WB16);
- } else {
- FILL(AV_WL16);
- }
- ptr += stride;
- }
- }
- #endif /* SWSCALE_SWSCALE_INTERNAL_H */
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