| /* |
| * 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 "libavutil/avutil.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 128 |
| |
| #define FAST_BGR2YV12 // use 7-bit instead of 15-bit coefficients |
| |
| #define MAX_FILTER_SIZE 256 |
| |
| #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 |
| |
| struct SwsContext; |
| |
| 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); |
| |
| /* 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 PixelFormat dstFormat; ///< Destination pixel format. |
| enum PixelFormat 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. |
| |
| 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 lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes. |
| int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes. |
| uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes. |
| uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes. |
| |
| int canMMX2BeUsed; |
| |
| 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() |
| uint8_t *table_rV[256 + 2*YUVRGB_TABLE_HEADROOM]; |
| uint8_t *table_gU[256 + 2*YUVRGB_TABLE_HEADROOM]; |
| int table_gV[256 + 2*YUVRGB_TABLE_HEADROOM]; |
| uint8_t *table_bU[256 + 2*YUVRGB_TABLE_HEADROOM]; |
| |
| //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 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*256" |
| #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM |
| #define ESP_OFFSET "11*8+4*4*256*2+8" |
| #define VROUNDER_OFFSET "11*8+4*4*256*2+16" |
| #define U_TEMP "11*8+4*4*256*2+24" |
| #define V_TEMP "11*8+4*4*256*2+32" |
| #define Y_TEMP "11*8+4*4*256*2+40" |
| #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48" |
| #define UV_OFF_PX "11*8+4*4*256*3+48" |
| #define UV_OFF_BYTE "11*8+4*4*256*3+56" |
| #define DITHER16 "11*8+4*4*256*3+64" |
| #define DITHER32 "11*8+4*4*256*3+80" |
| |
| 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 |
| |
| #if ARCH_BFIN |
| DECLARE_ALIGNED(4, uint32_t, oy); |
| DECLARE_ALIGNED(4, uint32_t, oc); |
| DECLARE_ALIGNED(4, uint32_t, zero); |
| DECLARE_ALIGNED(4, uint32_t, cy); |
| DECLARE_ALIGNED(4, uint32_t, crv); |
| DECLARE_ALIGNED(4, uint32_t, rmask); |
| DECLARE_ALIGNED(4, uint32_t, cbu); |
| DECLARE_ALIGNED(4, uint32_t, bmask); |
| DECLARE_ALIGNED(4, uint32_t, cgu); |
| DECLARE_ALIGNED(4, uint32_t, cgv); |
| DECLARE_ALIGNED(4, uint32_t, gmask); |
| #endif |
| |
| #if HAVE_VIS |
| DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10]; |
| #endif |
| int use_mmx_vfilter; |
| |
| /* function pointers for swScale() */ |
| yuv2planar1_fn yuv2plane1; |
| yuv2planarX_fn yuv2planeX; |
| yuv2interleavedX_fn yuv2nv12cX; |
| yuv2packed1_fn yuv2packed1; |
| yuv2packed2_fn yuv2packed2; |
| yuv2packedX_fn yuv2packedX; |
| |
| /// Unscaled conversion of luma plane to YV12 for horizontal scaler. |
| void (*lumToYV12)(uint8_t *dst, const uint8_t *src, 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. |
| */ |
| /** @{ */ |
| void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width); |
| void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], |
| int width); |
| /** @} */ |
| |
| /** |
| * Scale one horizontal line of input data using a bilinear filter |
| * to produce one line of output data. Compared to SwsContext->hScale(), |
| * please take note of the following caveats when using these: |
| * - Scaling is done using only 7bit instead of 14bit coefficients. |
| * - You can use no more than 5 input pixels to produce 4 output |
| * pixels. Therefore, this filter should not be used for downscaling |
| * by more than ~20% in width (because that equals more than 5/4th |
| * downscaling and thus more than 5 pixels input per 4 pixels output). |
| * - In general, bilinear filters create artifacts during downscaling |
| * (even when <20%), because one output pixel will span more than one |
| * input pixel, and thus some pixels will need edges of both neighbor |
| * pixels to interpolate the output pixel. Since you can use at most |
| * two input pixels per output pixel in bilinear scaling, this is |
| * impossible and thus downscaling by any size will create artifacts. |
| * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR |
| * in SwsContext->flags. |
| */ |
| /** @{ */ |
| void (*hyscale_fast)(struct SwsContext *c, |
| int16_t *dst, int dstWidth, |
| const uint8_t *src, int srcW, int xInc); |
| void (*hcscale_fast)(struct SwsContext *c, |
| int16_t *dst1, int16_t *dst2, int dstWidth, |
| const uint8_t *src1, const uint8_t *src2, |
| int srcW, int xInc); |
| /** @} */ |
| |
| /** |
| * Scale one horizontal line of input data using a filter over the input |
| * lines, to produce one (differently sized) line of output data. |
| * |
| * @param dst pointer to destination buffer for horizontally scaled |
| * data. If the number of bits per component of one |
| * destination pixel (SwsContext->dstBpc) is <= 10, data |
| * will be 15bpc in 16bits (int16_t) width. Else (i.e. |
| * SwsContext->dstBpc == 16), data will be 19bpc in |
| * 32bits (int32_t) width. |
| * @param dstW width of destination image |
| * @param src pointer to source data to be scaled. If the number of |
| * bits per component of a source pixel (SwsContext->srcBpc) |
| * is 8, this is 8bpc in 8bits (uint8_t) width. Else |
| * (i.e. SwsContext->dstBpc > 8), this is native depth |
| * in 16bits (uint16_t) width. In other words, for 9-bit |
| * YUV input, this is 9bpc, for 10-bit YUV input, this is |
| * 10bpc, and for 16-bit RGB or YUV, this is 16bpc. |
| * @param filter filter coefficients to be used per output pixel for |
| * scaling. This contains 14bpp filtering coefficients. |
| * Guaranteed to contain dstW * filterSize entries. |
| * @param filterPos position of the first input pixel to be used for |
| * each output pixel during scaling. Guaranteed to |
| * contain dstW entries. |
| * @param filterSize the number of input coefficients to be used (and |
| * thus the number of input pixels to be used) for |
| * creating a single output pixel. Is aligned to 4 |
| * (and input coefficients thus padded with zeroes) |
| * to simplify creating SIMD code. |
| */ |
| /** @{ */ |
| void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW, |
| const uint8_t *src, const int16_t *filter, |
| const int32_t *filterPos, int filterSize); |
| void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW, |
| const uint8_t *src, const int16_t *filter, |
| const int32_t *filterPos, int filterSize); |
| /** @} */ |
| |
| /// Color range conversion function for luma plane if needed. |
| void (*lumConvertRange)(int16_t *dst, int width); |
| /// Color range conversion function for chroma planes if needed. |
| void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width); |
| |
| int needs_hcscale; ///< Set if there are chroma planes to be converted. |
| } SwsContext; |
| //FIXME check init (where 0) |
| |
| SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c); |
| int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], |
| int fullRange, int brightness, |
| int contrast, int saturation); |
| |
| void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4], |
| int brightness, int contrast, int saturation); |
| void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex, |
| int lastInLumBuf, int lastInChrBuf); |
| |
| SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c); |
| SwsFunc ff_yuv2rgb_init_vis(SwsContext *c); |
| SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c); |
| SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c); |
| SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c); |
| void ff_bfin_get_unscaled_swscale(SwsContext *c); |
| |
| #if FF_API_SWS_FORMAT_NAME |
| /** |
| * @deprecated Use av_get_pix_fmt_name() instead. |
| */ |
| attribute_deprecated |
| const char *sws_format_name(enum PixelFormat format); |
| #endif |
| |
| #define is16BPS(x) \ |
| (av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 15) |
| |
| #define is9_OR_10BPS(x) \ |
| (av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 8 || \ |
| av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 9) |
| |
| #define isNBPS(x) is9_OR_10BPS(x) |
| |
| #define isBE(x) \ |
| (av_pix_fmt_descriptors[x].flags & PIX_FMT_BE) |
| |
| #define isYUV(x) \ |
| (!(av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB) && \ |
| av_pix_fmt_descriptors[x].nb_components >= 2) |
| |
| #define isPlanarYUV(x) \ |
| ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR) && \ |
| isYUV(x)) |
| |
| #define isRGB(x) \ |
| (av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB) |
| #if 0 // FIXME |
| #define isGray(x) \ |
| (!(av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) && \ |
| av_pix_fmt_descriptors[x].nb_components <= 2) |
| #else |
| #define isGray(x) \ |
| ((x) == PIX_FMT_GRAY8 || \ |
| (x) == PIX_FMT_Y400A || \ |
| (x) == PIX_FMT_GRAY16BE || \ |
| (x) == PIX_FMT_GRAY16LE) |
| #endif |
| |
| #define isRGBinInt(x) \ |
| ( \ |
| (x)==PIX_FMT_RGB48BE || \ |
| (x)==PIX_FMT_RGB48LE || \ |
| (x)==PIX_FMT_RGBA64BE || \ |
| (x)==PIX_FMT_RGBA64LE || \ |
| (x)==PIX_FMT_RGB32 || \ |
| (x)==PIX_FMT_RGB32_1 || \ |
| (x)==PIX_FMT_RGB24 || \ |
| (x)==PIX_FMT_RGB565BE || \ |
| (x)==PIX_FMT_RGB565LE || \ |
| (x)==PIX_FMT_RGB555BE || \ |
| (x)==PIX_FMT_RGB555LE || \ |
| (x)==PIX_FMT_RGB444BE || \ |
| (x)==PIX_FMT_RGB444LE || \ |
| (x)==PIX_FMT_RGB8 || \ |
| (x)==PIX_FMT_RGB4 || \ |
| (x)==PIX_FMT_RGB4_BYTE || \ |
| (x)==PIX_FMT_MONOBLACK || \ |
| (x)==PIX_FMT_MONOWHITE \ |
| ) |
| #define isBGRinInt(x) \ |
| ( \ |
| (x)==PIX_FMT_BGR48BE || \ |
| (x)==PIX_FMT_BGR48LE || \ |
| (x)==PIX_FMT_BGRA64BE || \ |
| (x)==PIX_FMT_BGRA64LE || \ |
| (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_RGBA64BE \ |
| || (x)==PIX_FMT_RGBA64LE \ |
| || (x)==PIX_FMT_RGBA \ |
| || (x)==PIX_FMT_ARGB \ |
| || (x)==PIX_FMT_RGB24 \ |
| ) |
| #define isBGRinBytes(x) ( \ |
| (x)==PIX_FMT_BGR48BE \ |
| || (x)==PIX_FMT_BGR48LE \ |
| || (x)==PIX_FMT_BGRA64BE \ |
| || (x)==PIX_FMT_BGRA64LE \ |
| || (x)==PIX_FMT_BGRA \ |
| || (x)==PIX_FMT_ABGR \ |
| || (x)==PIX_FMT_BGR24 \ |
| ) |
| |
| #define isAnyRGB(x) \ |
| ( \ |
| isRGBinInt(x) || \ |
| isBGRinInt(x) || \ |
| (x)==PIX_FMT_GBR24P \ |
| ) |
| |
| #define isALPHA(x) \ |
| (av_pix_fmt_descriptors[x].nb_components == 2 || \ |
| av_pix_fmt_descriptors[x].nb_components == 4) |
| |
| #if 1 |
| #define isPacked(x) ( \ |
| (x)==PIX_FMT_PAL8 \ |
| || (x)==PIX_FMT_YUYV422 \ |
| || (x)==PIX_FMT_UYVY422 \ |
| || (x)==PIX_FMT_Y400A \ |
| || isRGBinInt(x) \ |
| || isBGRinInt(x) \ |
| ) |
| #else |
| #define isPacked(x) \ |
| ((av_pix_fmt_descriptors[x].nb_components >= 2 && \ |
| !(av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR)) || \ |
| (x) == PIX_FMT_PAL8) |
| |
| #endif |
| #define isPlanar(x) \ |
| (av_pix_fmt_descriptors[x].nb_components >= 2 && \ |
| (av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR)) |
| |
| #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 uint8_t dithers[8][8][8]; |
| extern const uint16_t dither_scale[15][16]; |
| |
| |
| extern const AVClass sws_context_class; |
| |
| /** |
| * Set c->swScale to an unscaled converter if one exists for the specific |
| * source and destination formats, bit depths, flags, etc. |
| */ |
| void ff_get_unscaled_swscale(SwsContext *c); |
| |
| void ff_swscale_get_unscaled_altivec(SwsContext *c); |
| |
| /** |
| * Return function pointer to fastest main scaler path function depending |
| * on architecture and available optimizations. |
| */ |
| SwsFunc ff_getSwsFunc(SwsContext *c); |
| |
| void ff_sws_init_swScale_altivec(SwsContext *c); |
| void ff_sws_init_swScale_mmx(SwsContext *c); |
| |
| #endif /* SWSCALE_SWSCALE_INTERNAL_H */ |
