| /* |
| * 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" |
| #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" |
| #include "libavutil/ppc/util_altivec.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 enum SwsAlphaBlend { |
| SWS_ALPHA_BLEND_NONE = 0, |
| SWS_ALPHA_BLEND_UNIFORM, |
| SWS_ALPHA_BLEND_CHECKERBOARD, |
| SWS_ALPHA_BLEND_NB, |
| } SwsAlphaBlend; |
| |
| 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, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param dest pointer to the output plane. For >8-bit |
| * 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, 12 bits [0,4096] |
| * @param src scaled luma (Y) or alpha (A) source data, 15 bits for |
| * 8-10-bit output, 19 bits for 16-bit output (in int32_t) |
| * @param filterSize number of vertical input lines to scale |
| * @param dest pointer to output plane. For >8-bit |
| * 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 dstFormat destination pixel format |
| * @param chrDither ordered dither array of type uint8_t and size 8 |
| * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096] |
| * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit |
| * output, 19 bits for 16-bit output (in int32_t) |
| * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit |
| * output, 19 bits for 16-bit output (in int32_t) |
| * @param chrFilterSize number of vertical chroma input lines to scale |
| * @param dest pointer to the output plane. For >8-bit |
| * output, this is in uint16_t |
| * @param dstW width of chroma planes |
| */ |
| typedef void (*yuv2interleavedX_fn)(enum AVPixelFormat dstFormat, |
| const uint8_t *chrDither, |
| 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, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param dest pointer to the output plane. For 16-bit 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, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param dest pointer to the output plane. For 16-bit 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, 12 bits [0,4096] |
| * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param lumFilterSize number of vertical luma/alpha input lines to scale |
| * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096] |
| * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param chrFilterSize number of vertical chroma input lines to scale |
| * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param dest pointer to the output plane. For 16-bit 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, 12 bits [0,4096] |
| * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param lumFilterSize number of vertical luma/alpha input lines to scale |
| * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096] |
| * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param chrFilterSize number of vertical chroma input lines to scale |
| * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output, |
| * 19 bits for 16-bit output (in int32_t) |
| * @param dest pointer to the output planes. For 16-bit 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); |
| |
| struct SwsSlice; |
| struct SwsFilterDescriptor; |
| |
| /* 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[3]; |
| int cascaded_tmpStride[4]; |
| uint8_t *cascaded_tmp[4]; |
| int cascaded1_tmpStride[4]; |
| uint8_t *cascaded1_tmp[4]; |
| int cascaded_mainindex; |
| |
| double gamma_value; |
| int gamma_flag; |
| int is_internal_gamma; |
| uint16_t *gamma; |
| uint16_t *inv_gamma; |
| |
| int numDesc; |
| int descIndex[2]; |
| int numSlice; |
| struct SwsSlice *slice; |
| struct SwsFilterDescriptor *desc; |
| |
| uint32_t pal_yuv[256]; |
| uint32_t pal_rgb[256]; |
| |
| float uint2float_lut[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. |
| */ |
| //@{ |
| 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. |
| //@} |
| |
| uint8_t *formatConvBuffer; |
| int needAlpha; |
| |
| /** |
| * @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 warned_unuseable_bilinear; |
| |
| 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 7 bits instead of 14-bit 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 15 bpc in 16 bits (int16_t) width. Else (i.e. |
| * SwsContext->dstBpc == 16), data will be 19bpc in |
| * 32 bits (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 8 bits (uint8_t) width. Else |
| * (i.e. SwsContext->dstBpc > 8), this is native depth |
| * in 16 bits (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; |
| |
| SwsAlphaBlend alphablend; |
| } 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 ff_updateMMXDitherTables(SwsContext *c, int dstY); |
| |
| av_cold void ff_sws_init_range_convert(SwsContext *c); |
| |
| SwsFunc ff_yuv2rgb_init_x86(SwsContext *c); |
| SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c); |
| |
| 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 == 16; |
| } |
| |
| static av_always_inline int is32BPS(enum AVPixelFormat pix_fmt) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| av_assert0(desc); |
| return desc->comp[0].depth == 32; |
| } |
| |
| static av_always_inline int isNBPS(enum AVPixelFormat pix_fmt) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| av_assert0(desc); |
| return desc->comp[0].depth >= 9 && desc->comp[0].depth <= 14; |
| } |
| |
| 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)); |
| } |
| |
| /* |
| * Identity semi-planar YUV formats. Specifically, those are YUV formats |
| * where the second and third components (U & V) are on the same plane. |
| */ |
| static av_always_inline int isSemiPlanarYUV(enum AVPixelFormat pix_fmt) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| av_assert0(desc); |
| return (isPlanarYUV(pix_fmt) && desc->comp[1].plane == desc->comp[2].plane); |
| } |
| |
| 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); |
| } |
| |
| static av_always_inline int isGray(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_HWACCEL) && |
| desc->nb_components <= 2 && |
| pix_fmt != AV_PIX_FMT_MONOBLACK && |
| pix_fmt != AV_PIX_FMT_MONOWHITE; |
| } |
| |
| static av_always_inline int isRGBinInt(enum AVPixelFormat pix_fmt) |
| { |
| return pix_fmt == AV_PIX_FMT_RGB48BE || |
| pix_fmt == AV_PIX_FMT_RGB48LE || |
| pix_fmt == AV_PIX_FMT_RGB32 || |
| pix_fmt == AV_PIX_FMT_RGB32_1 || |
| pix_fmt == AV_PIX_FMT_RGB24 || |
| pix_fmt == AV_PIX_FMT_RGB565BE || |
| pix_fmt == AV_PIX_FMT_RGB565LE || |
| pix_fmt == AV_PIX_FMT_RGB555BE || |
| pix_fmt == AV_PIX_FMT_RGB555LE || |
| pix_fmt == AV_PIX_FMT_RGB444BE || |
| pix_fmt == AV_PIX_FMT_RGB444LE || |
| pix_fmt == AV_PIX_FMT_RGB8 || |
| pix_fmt == AV_PIX_FMT_RGB4 || |
| pix_fmt == AV_PIX_FMT_RGB4_BYTE || |
| pix_fmt == AV_PIX_FMT_RGBA64BE || |
| pix_fmt == AV_PIX_FMT_RGBA64LE || |
| pix_fmt == AV_PIX_FMT_MONOBLACK || |
| pix_fmt == AV_PIX_FMT_MONOWHITE; |
| } |
| |
| static av_always_inline int isBGRinInt(enum AVPixelFormat pix_fmt) |
| { |
| return pix_fmt == AV_PIX_FMT_BGR48BE || |
| pix_fmt == AV_PIX_FMT_BGR48LE || |
| pix_fmt == AV_PIX_FMT_BGR32 || |
| pix_fmt == AV_PIX_FMT_BGR32_1 || |
| pix_fmt == AV_PIX_FMT_BGR24 || |
| pix_fmt == AV_PIX_FMT_BGR565BE || |
| pix_fmt == AV_PIX_FMT_BGR565LE || |
| pix_fmt == AV_PIX_FMT_BGR555BE || |
| pix_fmt == AV_PIX_FMT_BGR555LE || |
| pix_fmt == AV_PIX_FMT_BGR444BE || |
| pix_fmt == AV_PIX_FMT_BGR444LE || |
| pix_fmt == AV_PIX_FMT_BGR8 || |
| pix_fmt == AV_PIX_FMT_BGR4 || |
| pix_fmt == AV_PIX_FMT_BGR4_BYTE || |
| pix_fmt == AV_PIX_FMT_BGRA64BE || |
| pix_fmt == AV_PIX_FMT_BGRA64LE || |
| pix_fmt == AV_PIX_FMT_MONOBLACK || |
| pix_fmt == AV_PIX_FMT_MONOWHITE; |
| } |
| |
| static av_always_inline int isBayer(enum AVPixelFormat pix_fmt) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| av_assert0(desc); |
| return !!(desc->flags & AV_PIX_FMT_FLAG_BAYER); |
| } |
| |
| static av_always_inline int isBayer16BPS(enum AVPixelFormat pix_fmt) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| av_assert0(desc); |
| return desc->comp[1].depth == 8; |
| } |
| |
| static av_always_inline int isAnyRGB(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) || |
| pix_fmt == AV_PIX_FMT_MONOBLACK || pix_fmt == AV_PIX_FMT_MONOWHITE; |
| } |
| |
| static av_always_inline int isFloat(enum AVPixelFormat pix_fmt) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| av_assert0(desc); |
| return desc->flags & AV_PIX_FMT_FLAG_FLOAT; |
| } |
| |
| 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; |
| } |
| |
| 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 || |
| pix_fmt == AV_PIX_FMT_MONOBLACK || pix_fmt == AV_PIX_FMT_MONOWHITE; |
| } |
| |
| 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) |
| { |
| switch (pix_fmt) { |
| case AV_PIX_FMT_PAL8: |
| case AV_PIX_FMT_BGR4_BYTE: |
| case AV_PIX_FMT_BGR8: |
| case AV_PIX_FMT_GRAY8: |
| case AV_PIX_FMT_RGB4_BYTE: |
| case AV_PIX_FMT_RGB8: |
| return 1; |
| default: |
| return 0; |
| } |
| } |
| |
| 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[11][4]; |
| |
| extern const AVClass ff_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); |
| void ff_get_unscaled_swscale_aarch64(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_vsx(SwsContext *c); |
| void ff_sws_init_swscale_x86(SwsContext *c); |
| void ff_sws_init_swscale_aarch64(SwsContext *c); |
| void ff_sws_init_swscale_arm(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); |
| |
| /** |
| * Allocate and return an SwsContext. |
| * This is like sws_getContext() but does not perform the init step, allowing |
| * the user to set additional AVOptions. |
| * |
| * @see sws_getContext() |
| */ |
| struct SwsContext *sws_alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat, |
| int dstW, int dstH, enum AVPixelFormat dstFormat, |
| int flags, const double *param); |
| |
| int ff_sws_alphablendaway(SwsContext *c, const uint8_t *src[], |
| int srcStride[], int srcSliceY, int srcSliceH, |
| uint8_t *dst[], int dstStride[]); |
| |
| 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>>(16-bits) : (1<<(bits-1)); |
| 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; |
| } |
| #undef FILL |
| } |
| |
| static inline void fillPlane32(uint8_t *plane, int stride, int width, int height, int y, |
| int alpha, int bits, const int big_endian, int is_float) |
| { |
| int i, j; |
| uint8_t *ptr = plane + stride * y; |
| uint32_t v; |
| uint32_t onef32 = 0x3f800000; |
| if (is_float) |
| v = alpha ? onef32 : 0; |
| else |
| v = alpha ? 0xFFFFFFFF>>(32-bits) : (1<<(bits-1)); |
| |
| for (i = 0; i < height; i++) { |
| #define FILL(wfunc) \ |
| for (j = 0; j < width; j++) {\ |
| wfunc(ptr+4*j, v);\ |
| } |
| if (big_endian) { |
| FILL(AV_WB32); |
| } else { |
| FILL(AV_WL32); |
| } |
| ptr += stride; |
| } |
| #undef FILL |
| } |
| |
| |
| #define MAX_SLICE_PLANES 4 |
| |
| /// Slice plane |
| typedef struct SwsPlane |
| { |
| int available_lines; ///< max number of lines that can be hold by this plane |
| int sliceY; ///< index of first line |
| int sliceH; ///< number of lines |
| uint8_t **line; ///< line buffer |
| uint8_t **tmp; ///< Tmp line buffer used by mmx code |
| } SwsPlane; |
| |
| /** |
| * Struct which defines a slice of an image to be scaled or an output for |
| * a scaled slice. |
| * A slice can also be used as intermediate ring buffer for scaling steps. |
| */ |
| typedef struct SwsSlice |
| { |
| int width; ///< Slice line width |
| int h_chr_sub_sample; ///< horizontal chroma subsampling factor |
| int v_chr_sub_sample; ///< vertical chroma subsampling factor |
| int is_ring; ///< flag to identify if this slice is a ring buffer |
| int should_free_lines; ///< flag to identify if there are dynamic allocated lines |
| enum AVPixelFormat fmt; ///< planes pixel format |
| SwsPlane plane[MAX_SLICE_PLANES]; ///< color planes |
| } SwsSlice; |
| |
| /** |
| * Struct which holds all necessary data for processing a slice. |
| * A processing step can be a color conversion or horizontal/vertical scaling. |
| */ |
| typedef struct SwsFilterDescriptor |
| { |
| SwsSlice *src; ///< Source slice |
| SwsSlice *dst; ///< Output slice |
| |
| int alpha; ///< Flag for processing alpha channel |
| void *instance; ///< Filter instance data |
| |
| /// Function for processing input slice sliceH lines starting from line sliceY |
| int (*process)(SwsContext *c, struct SwsFilterDescriptor *desc, int sliceY, int sliceH); |
| } SwsFilterDescriptor; |
| |
| // warp input lines in the form (src + width*i + j) to slice format (line[i][j]) |
| // relative=true means first line src[x][0] otherwise first line is src[x][lum/crh Y] |
| int ff_init_slice_from_src(SwsSlice * s, uint8_t *src[4], int stride[4], int srcW, int lumY, int lumH, int chrY, int chrH, int relative); |
| |
| // Initialize scaler filter descriptor chain |
| int ff_init_filters(SwsContext *c); |
| |
| // Free all filter data |
| int ff_free_filters(SwsContext *c); |
| |
| /* |
| function for applying ring buffer logic into slice s |
| It checks if the slice can hold more @lum lines, if yes |
| do nothing otherwise remove @lum least used lines. |
| It applies the same procedure for @chr lines. |
| */ |
| int ff_rotate_slice(SwsSlice *s, int lum, int chr); |
| |
| /// initializes gamma conversion descriptor |
| int ff_init_gamma_convert(SwsFilterDescriptor *desc, SwsSlice * src, uint16_t *table); |
| |
| /// initializes lum pixel format conversion descriptor |
| int ff_init_desc_fmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal); |
| |
| /// initializes lum horizontal scaling descriptor |
| int ff_init_desc_hscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc); |
| |
| /// initializes chr pixel format conversion descriptor |
| int ff_init_desc_cfmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal); |
| |
| /// initializes chr horizontal scaling descriptor |
| int ff_init_desc_chscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc); |
| |
| int ff_init_desc_no_chr(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst); |
| |
| /// initializes vertical scaling descriptors |
| int ff_init_vscale(SwsContext *c, SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst); |
| |
| /// setup vertical scaler functions |
| void ff_init_vscale_pfn(SwsContext *c, yuv2planar1_fn yuv2plane1, yuv2planarX_fn yuv2planeX, |
| yuv2interleavedX_fn yuv2nv12cX, yuv2packed1_fn yuv2packed1, yuv2packed2_fn yuv2packed2, |
| yuv2packedX_fn yuv2packedX, yuv2anyX_fn yuv2anyX, int use_mmx); |
| |
| //number of extra lines to process |
| #define MAX_LINES_AHEAD 4 |
| |
| #endif /* SWSCALE_SWSCALE_INTERNAL_H */ |
