| /* |
| * Copyright (C) 2001-2003 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_H |
| #define SWSCALE_H |
| |
| /** |
| * @file swscale.h |
| * @brief |
| * external api for the swscale stuff |
| */ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define AV_STRINGIFY(s) AV_TOSTRING(s) |
| #define AV_TOSTRING(s) #s |
| |
| #define LIBSWSCALE_VERSION_INT ((0<<16)+(5<<8)+0) |
| #define LIBSWSCALE_VERSION 0.5.0 |
| #define LIBSWSCALE_BUILD LIBSWSCALE_VERSION_INT |
| |
| #define LIBSWSCALE_IDENT "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION) |
| |
| /* values for the flags, the stuff on the command line is different */ |
| #define SWS_FAST_BILINEAR 1 |
| #define SWS_BILINEAR 2 |
| #define SWS_BICUBIC 4 |
| #define SWS_X 8 |
| #define SWS_POINT 0x10 |
| #define SWS_AREA 0x20 |
| #define SWS_BICUBLIN 0x40 |
| #define SWS_GAUSS 0x80 |
| #define SWS_SINC 0x100 |
| #define SWS_LANCZOS 0x200 |
| #define SWS_SPLINE 0x400 |
| |
| #define SWS_SRC_V_CHR_DROP_MASK 0x30000 |
| #define SWS_SRC_V_CHR_DROP_SHIFT 16 |
| |
| #define SWS_PARAM_DEFAULT 123456 |
| |
| #define SWS_PRINT_INFO 0x1000 |
| |
| //the following 3 flags are not completly implemented |
| //internal chrominace subsamling info |
| #define SWS_FULL_CHR_H_INT 0x2000 |
| //input subsampling info |
| #define SWS_FULL_CHR_H_INP 0x4000 |
| #define SWS_DIRECT_BGR 0x8000 |
| #define SWS_ACCURATE_RND 0x40000 |
| |
| #define SWS_CPU_CAPS_MMX 0x80000000 |
| #define SWS_CPU_CAPS_MMX2 0x20000000 |
| #define SWS_CPU_CAPS_3DNOW 0x40000000 |
| #define SWS_CPU_CAPS_ALTIVEC 0x10000000 |
| |
| #define SWS_MAX_REDUCE_CUTOFF 0.002 |
| |
| #define SWS_CS_ITU709 1 |
| #define SWS_CS_FCC 4 |
| #define SWS_CS_ITU601 5 |
| #define SWS_CS_ITU624 5 |
| #define SWS_CS_SMPTE170M 5 |
| #define SWS_CS_SMPTE240M 7 |
| #define SWS_CS_DEFAULT 5 |
| |
| |
| |
| // when used for filters they must have an odd number of elements |
| // coeffs cannot be shared between vectors |
| typedef struct { |
| double *coeff; |
| int length; |
| } SwsVector; |
| |
| // vectors can be shared |
| typedef struct { |
| SwsVector *lumH; |
| SwsVector *lumV; |
| SwsVector *chrH; |
| SwsVector *chrV; |
| } SwsFilter; |
| |
| struct SwsContext; |
| |
| void sws_freeContext(struct SwsContext *swsContext); |
| |
| struct SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags, |
| double *param); |
| int sws_scale(struct SwsContext *context, uint8_t* src, int srcStride, int srcSliceY, |
| int srcSliceH, uint8_t* dst, int dstStride); |
| |
| |
| SwsVector *sws_getGaussianVec(double variance, double quality); |
| SwsVector *sws_getConstVec(double c, int length); |
| SwsVector *sws_getIdentityVec(void); |
| void sws_scaleVec(SwsVector *a, double scalar); |
| void sws_normalizeVec(SwsVector *a, double height); |
| void sws_convVec(SwsVector *a, SwsVector *b); |
| void sws_addVec(SwsVector *a, SwsVector *b); |
| void sws_subVec(SwsVector *a, SwsVector *b); |
| void sws_shiftVec(SwsVector *a, int shift); |
| SwsVector *sws_cloneVec(SwsVector *a); |
| |
| void sws_printVec(SwsVector *a); |
| void sws_freeVec(SwsVector *a); |
| |
| void sws_freeFilter(SwsFilter *filter); |
| |
| /** |
| * Pixel format. Notes: |
| * |
| * PIX_FMT_RGB32 is handled in an endian-specific manner. A RGBA |
| * color is put together as: |
| * (A << 24) | (R << 16) | (G << 8) | B |
| * This is stored as BGRA on little endian CPU architectures and ARGB on |
| * big endian CPUs. |
| * |
| * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized |
| * image data is stored in AVFrame.data[0]. The palette is transported in |
| * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is |
| * formatted the same as in PIX_FMT_RGB32 described above (i.e., it is |
| * also endian-specific). Note also that the individual RGB palette |
| * components stored in AVFrame.data[1] should be in the range 0..255. |
| * This is important as many custom PAL8 video codecs that were designed |
| * to run on the IBM VGA graphics adapter use 6-bit palette components. |
| */ |
| enum PixelFormat { |
| PIX_FMT_NONE= -1, |
| PIX_FMT_YUV420P, ///< Planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples) |
| PIX_FMT_YUYV422, ///< Packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr |
| PIX_FMT_RGB24, ///< Packed RGB 8:8:8, 24bpp, RGBRGB... |
| PIX_FMT_BGR24, ///< Packed RGB 8:8:8, 24bpp, BGRBGR... |
| PIX_FMT_YUV422P, ///< Planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples) |
| PIX_FMT_YUV444P, ///< Planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples) |
| PIX_FMT_RGB32, ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8R 8G 8B(lsb), in cpu endianness |
| PIX_FMT_YUV410P, ///< Planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples) |
| PIX_FMT_YUV411P, ///< Planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) |
| PIX_FMT_RGB565, ///< Packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), in cpu endianness |
| PIX_FMT_RGB555, ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), in cpu endianness most significant bit to 1 |
| PIX_FMT_GRAY8, ///< Y , 8bpp |
| PIX_FMT_MONOWHITE, ///< Y , 1bpp, 1 is white |
| PIX_FMT_MONOBLACK, ///< Y , 1bpp, 0 is black |
| PIX_FMT_PAL8, ///< 8 bit with PIX_FMT_RGB32 palette |
| PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0, 12bpp, full scale (jpeg) |
| PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2, 16bpp, full scale (jpeg) |
| PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4, 24bpp, full scale (jpeg) |
| PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h) |
| PIX_FMT_XVMC_MPEG2_IDCT, |
| PIX_FMT_UYVY422, ///< Packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1 |
| PIX_FMT_UYYVYY411, ///< Packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3 |
| PIX_FMT_BGR32, ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8B 8G 8R(lsb), in cpu endianness |
| PIX_FMT_BGR565, ///< Packed RGB 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), in cpu endianness |
| PIX_FMT_BGR555, ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), in cpu endianness most significant bit to 1 |
| PIX_FMT_BGR8, ///< Packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb) |
| PIX_FMT_BGR4, ///< Packed RGB 1:2:1, 4bpp, (msb)1B 2G 1R(lsb) |
| PIX_FMT_BGR4_BYTE, ///< Packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb) |
| PIX_FMT_RGB8, ///< Packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb) |
| PIX_FMT_RGB4, ///< Packed RGB 1:2:1, 4bpp, (msb)2R 3G 3B(lsb) |
| PIX_FMT_RGB4_BYTE, ///< Packed RGB 1:2:1, 8bpp, (msb)2R 3G 3B(lsb) |
| PIX_FMT_NV12, ///< Planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 for UV |
| PIX_FMT_NV21, ///< as above, but U and V bytes are swapped |
| |
| PIX_FMT_RGB32_1, ///< Packed RGB 8:8:8, 32bpp, (msb)8R 8G 8B 8A(lsb), in cpu endianness |
| PIX_FMT_BGR32_1, ///< Packed RGB 8:8:8, 32bpp, (msb)8B 8G 8R 8A(lsb), in cpu endianness |
| |
| PIX_FMT_NB, ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions |
| }; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |