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Diffstat (limited to 'ffmpeg1/libswscale/swscale_internal.h')
| -rw-r--r-- | ffmpeg1/libswscale/swscale_internal.h | 840 |
1 files changed, 0 insertions, 840 deletions
diff --git a/ffmpeg1/libswscale/swscale_internal.h b/ffmpeg1/libswscale/swscale_internal.h deleted file mode 100644 index 83d3a00..0000000 --- a/ffmpeg1/libswscale/swscale_internal.h +++ /dev/null @@ -1,840 +0,0 @@ -/* - * 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/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 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); - -/** - * 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. - - 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() - 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]; - - 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 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; - 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. - */ - /** @{ */ - void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width); - void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], - int width); - /** @} */ - - /** - * Scale one horizontal line of input data using a bilinear filter - * to produce one line of output data. Compared to SwsContext->hScale(), - * please take note of the following caveats when using these: - * - Scaling is done using only 7bit instead of 14bit coefficients. - * - You can use no more than 5 input pixels to produce 4 output - * pixels. Therefore, this filter should not be used for downscaling - * by more than ~20% in width (because that equals more than 5/4th - * downscaling and thus more than 5 pixels input per 4 pixels output). - * - In general, bilinear filters create artifacts during downscaling - * (even when <20%), because one output pixel will span more than one - * input pixel, and thus some pixels will need edges of both neighbor - * pixels to interpolate the output pixel. Since you can use at most - * two input pixels per output pixel in bilinear scaling, this is - * impossible and thus downscaling by any size will create artifacts. - * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR - * in SwsContext->flags. - */ - /** @{ */ - void (*hyscale_fast)(struct SwsContext *c, - int16_t *dst, int dstWidth, - const uint8_t *src, int srcW, int xInc); - void (*hcscale_fast)(struct SwsContext *c, - int16_t *dst1, int16_t *dst2, int dstWidth, - const uint8_t *src1, const uint8_t *src2, - int srcW, int xInc); - /** @} */ - - /** - * Scale one horizontal line of input data using a filter over the input - * lines, to produce one (differently sized) line of output data. - * - * @param dst pointer to destination buffer for horizontally scaled - * data. If the number of bits per component of one - * destination pixel (SwsContext->dstBpc) is <= 10, data - * will be 15bpc in 16bits (int16_t) width. Else (i.e. - * SwsContext->dstBpc == 16), data will be 19bpc in - * 32bits (int32_t) width. - * @param dstW width of destination image - * @param src pointer to source data to be scaled. If the number of - * bits per component of a source pixel (SwsContext->srcBpc) - * is 8, this is 8bpc in 8bits (uint8_t) width. Else - * (i.e. SwsContext->dstBpc > 8), this is native depth - * in 16bits (uint16_t) width. In other words, for 9-bit - * YUV input, this is 9bpc, for 10-bit YUV input, this is - * 10bpc, and for 16-bit RGB or YUV, this is 16bpc. - * @param filter filter coefficients to be used per output pixel for - * scaling. This contains 14bpp filtering coefficients. - * Guaranteed to contain dstW * filterSize entries. - * @param filterPos position of the first input pixel to be used for - * each output pixel during scaling. Guaranteed to - * contain dstW entries. - * @param filterSize the number of input coefficients to be used (and - * thus the number of input pixels to be used) for - * creating a single output pixel. Is aligned to 4 - * (and input coefficients thus padded with zeroes) - * to simplify creating SIMD code. - */ - /** @{ */ - void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW, - const uint8_t *src, const int16_t *filter, - const int32_t *filterPos, int filterSize); - void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW, - const uint8_t *src, const int16_t *filter, - const int32_t *filterPos, int filterSize); - /** @} */ - - /// Color range conversion function for luma plane if needed. - void (*lumConvertRange)(int16_t *dst, int width); - /// Color range conversion function for chroma planes if needed. - void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width); - - int needs_hcscale; ///< Set if there are chroma planes to be converted. -} SwsContext; -//FIXME check init (where 0) - -SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c); -int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], - int fullRange, int brightness, - int contrast, int saturation); - -void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4], - int brightness, int contrast, int saturation); -void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex, - int lastInLumBuf, int lastInChrBuf); - -SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c); -SwsFunc ff_yuv2rgb_init_vis(SwsContext *c); -SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c); -SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c); -void ff_bfin_get_unscaled_swscale(SwsContext *c); - -#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 & PIX_FMT_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 & PIX_FMT_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 & PIX_FMT_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 & PIX_FMT_RGB); -} - -#if 0 // FIXME -#define isGray(x) \ - (!(av_pix_fmt_desc_get(x)->flags & PIX_FMT_PAL) && \ - av_pix_fmt_desc_get(x)->nb_components <= 2) -#else -#define isGray(x) \ - ((x) == AV_PIX_FMT_GRAY8 || \ - (x) == AV_PIX_FMT_Y400A || \ - (x) == AV_PIX_FMT_GRAY16BE || \ - (x) == AV_PIX_FMT_GRAY16LE) -#endif - -#define isRGBinInt(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_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_MONOBLACK || \ - (x) == AV_PIX_FMT_MONOWHITE \ - ) -#define isBGRinInt(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_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_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 isAnyRGB(x) \ - ( \ - isRGBinInt(x) || \ - isBGRinInt(x) || \ - isRGB(x) || \ - (x)==AV_PIX_FMT_GBRP9LE || \ - (x)==AV_PIX_FMT_GBRP9BE || \ - (x)==AV_PIX_FMT_GBRP10LE || \ - (x)==AV_PIX_FMT_GBRP10BE || \ - (x)==AV_PIX_FMT_GBRP12LE || \ - (x)==AV_PIX_FMT_GBRP12BE || \ - (x)==AV_PIX_FMT_GBRP14LE || \ - (x)==AV_PIX_FMT_GBRP14BE || \ - (x)==AV_PIX_FMT_GBR24P \ - ) - -static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt) -{ - const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); - av_assert0(desc); - return desc->flags & PIX_FMT_ALPHA; -} - -#if 1 -#define isPacked(x) ( \ - (x)==AV_PIX_FMT_PAL8 \ - || (x)==AV_PIX_FMT_YUYV422 \ - || (x)==AV_PIX_FMT_UYVY422 \ - || (x)==AV_PIX_FMT_Y400A \ - || 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 & PIX_FMT_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 & PIX_FMT_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 & (PIX_FMT_PLANAR | PIX_FMT_RGB)) == PIX_FMT_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 & (PIX_FMT_PLANAR | PIX_FMT_RGB)) == - (PIX_FMT_PLANAR | PIX_FMT_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 & PIX_FMT_PAL) || (desc->flags & PIX_FMT_PSEUDOPAL); -} - -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_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_altivec(SwsContext *c); -void ff_sws_init_swScale_mmx(SwsContext *c); - -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 */ |