FFmpeg: libswscale/swscale_internal.h Source File

00001 /*
00002  * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00021 #ifndef SWSCALE_SWSCALE_INTERNAL_H
00022 #define SWSCALE_SWSCALE_INTERNAL_H
00023 
00024 #include "config.h"
00025 
00026 #if HAVE_ALTIVEC_H
00027 #include <altivec.h>
00028 #endif
00029 
00030 #include "libavutil/avutil.h"
00031 
00032 #define STR(s)         AV_TOSTRING(s) //AV_STRINGIFY is too long
00033 
00034 #define MAX_FILTER_SIZE 256
00035 
00036 #define VOFW 2048
00037 #define VOF  (VOFW*2)
00038 
00039 #ifdef WORDS_BIGENDIAN
00040 #define ALT32_CORR (-1)
00041 #else
00042 #define ALT32_CORR   1
00043 #endif
00044 
00045 #if ARCH_X86_64
00046 #   define APCK_PTR2 8
00047 #   define APCK_COEF 16
00048 #   define APCK_SIZE 24
00049 #else
00050 #   define APCK_PTR2 4
00051 #   define APCK_COEF 8
00052 #   define APCK_SIZE 16
00053 #endif
00054 
00055 struct SwsContext;
00056 
00057 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
00058              int srcSliceH, uint8_t* dst[], int dstStride[]);
00059 
00060 /* This struct should be aligned on at least a 32-byte boundary. */
00061 typedef struct SwsContext{
00065     const AVClass *av_class;
00066 
00071     SwsFunc swScale;
00072     int srcW, srcH, dstH;
00073     int chrSrcW, chrSrcH, chrDstW, chrDstH;
00074     int lumXInc, chrXInc;
00075     int lumYInc, chrYInc;
00076     enum PixelFormat dstFormat, srcFormat;  
00077     int origDstFormat, origSrcFormat;       
00078     int chrSrcHSubSample, chrSrcVSubSample;
00079     int chrIntHSubSample, chrIntVSubSample;
00080     int chrDstHSubSample, chrDstVSubSample;
00081     int vChrDrop;
00082     int sliceDir;
00083     double param[2];
00084 
00085     uint32_t pal_yuv[256];
00086     uint32_t pal_rgb[256];
00087 
00088     int16_t **lumPixBuf;
00089     int16_t **chrPixBuf;
00090     int16_t *hLumFilter;
00091     int16_t *hLumFilterPos;
00092     int16_t *hChrFilter;
00093     int16_t *hChrFilterPos;
00094     int16_t *vLumFilter;
00095     int16_t *vLumFilterPos;
00096     int16_t *vChrFilter;
00097     int16_t *vChrFilterPos;
00098 
00099     uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
00100 
00101     int hLumFilterSize;
00102     int hChrFilterSize;
00103     int vLumFilterSize;
00104     int vChrFilterSize;
00105     int vLumBufSize;
00106     int vChrBufSize;
00107 
00108     uint8_t *funnyYCode;
00109     uint8_t *funnyUVCode;
00110     int32_t *lumMmx2FilterPos;
00111     int32_t *chrMmx2FilterPos;
00112     int16_t *lumMmx2Filter;
00113     int16_t *chrMmx2Filter;
00114 
00115     int canMMX2BeUsed;
00116 
00117     int lastInLumBuf;
00118     int lastInChrBuf;
00119     int lumBufIndex;
00120     int chrBufIndex;
00121     int dstY;
00122     int flags;
00123     void * yuvTable;            // pointer to the yuv->rgb table start so it can be freed()
00124     uint8_t * table_rV[256];
00125     uint8_t * table_gU[256];
00126     int    table_gV[256];
00127     uint8_t * table_bU[256];
00128 
00129     //Colorspace stuff
00130     int contrast, brightness, saturation;    // for sws_getColorspaceDetails
00131     int srcColorspaceTable[4];
00132     int dstColorspaceTable[4];
00133     int srcRange, dstRange;
00134     int yuv2rgb_y_offset;
00135     int yuv2rgb_y_coeff;
00136     int yuv2rgb_v2r_coeff;
00137     int yuv2rgb_v2g_coeff;
00138     int yuv2rgb_u2g_coeff;
00139     int yuv2rgb_u2b_coeff;
00140 
00141 #define RED_DITHER            "0*8"
00142 #define GREEN_DITHER          "1*8"
00143 #define BLUE_DITHER           "2*8"
00144 #define Y_COEFF               "3*8"
00145 #define VR_COEFF              "4*8"
00146 #define UB_COEFF              "5*8"
00147 #define VG_COEFF              "6*8"
00148 #define UG_COEFF              "7*8"
00149 #define Y_OFFSET              "8*8"
00150 #define U_OFFSET              "9*8"
00151 #define V_OFFSET              "10*8"
00152 #define LUM_MMX_FILTER_OFFSET "11*8"
00153 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
00154 #define DSTW_OFFSET           "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
00155 #define ESP_OFFSET            "11*8+4*4*256*2+8"
00156 #define VROUNDER_OFFSET       "11*8+4*4*256*2+16"
00157 #define U_TEMP                "11*8+4*4*256*2+24"
00158 #define V_TEMP                "11*8+4*4*256*2+32"
00159 
00160     uint64_t redDither   __attribute__((aligned(8)));
00161     uint64_t greenDither __attribute__((aligned(8)));
00162     uint64_t blueDither  __attribute__((aligned(8)));
00163 
00164     uint64_t yCoeff      __attribute__((aligned(8)));
00165     uint64_t vrCoeff     __attribute__((aligned(8)));
00166     uint64_t ubCoeff     __attribute__((aligned(8)));
00167     uint64_t vgCoeff     __attribute__((aligned(8)));
00168     uint64_t ugCoeff     __attribute__((aligned(8)));
00169     uint64_t yOffset     __attribute__((aligned(8)));
00170     uint64_t uOffset     __attribute__((aligned(8)));
00171     uint64_t vOffset     __attribute__((aligned(8)));
00172     int32_t  lumMmxFilter[4*MAX_FILTER_SIZE];
00173     int32_t  chrMmxFilter[4*MAX_FILTER_SIZE];
00174     int dstW;
00175     uint64_t esp          __attribute__((aligned(8)));
00176     uint64_t vRounder     __attribute__((aligned(8)));
00177     uint64_t u_temp       __attribute__((aligned(8)));
00178     uint64_t v_temp       __attribute__((aligned(8)));
00179 
00180 #if HAVE_ALTIVEC
00181 
00182   vector signed short   CY;
00183   vector signed short   CRV;
00184   vector signed short   CBU;
00185   vector signed short   CGU;
00186   vector signed short   CGV;
00187   vector signed short   OY;
00188   vector unsigned short CSHIFT;
00189   vector signed short   *vYCoeffsBank, *vCCoeffsBank;
00190 
00191 #endif
00192 
00193 
00194 #if ARCH_BFIN
00195     uint32_t oy           __attribute__((aligned(4)));
00196     uint32_t oc           __attribute__((aligned(4)));
00197     uint32_t zero         __attribute__((aligned(4)));
00198     uint32_t cy           __attribute__((aligned(4)));
00199     uint32_t crv          __attribute__((aligned(4)));
00200     uint32_t rmask        __attribute__((aligned(4)));
00201     uint32_t cbu          __attribute__((aligned(4)));
00202     uint32_t bmask        __attribute__((aligned(4)));
00203     uint32_t cgu          __attribute__((aligned(4)));
00204     uint32_t cgv          __attribute__((aligned(4)));
00205     uint32_t gmask        __attribute__((aligned(4)));
00206 #endif
00207 
00208 #if HAVE_VIS
00209     uint64_t sparc_coeffs[10] __attribute__((aligned(8)));
00210 #endif
00211 
00212 } SwsContext;
00213 //FIXME check init (where 0)
00214 
00215 SwsFunc sws_yuv2rgb_get_func_ptr (SwsContext *c);
00216 int sws_yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
00217 
00218 void sws_yuv2rgb_altivec_init_tables (SwsContext *c, const int inv_table[4],int brightness,int contrast, int saturation);
00219 SwsFunc sws_yuv2rgb_init_altivec (SwsContext *c);
00220 void altivec_yuv2packedX (SwsContext *c,
00221                           int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
00222                           int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
00223                           uint8_t *dest, int dstW, int dstY);
00224 
00225 const char *sws_format_name(int format);
00226 
00227 //FIXME replace this with something faster
00228 #define isPlanarYUV(x)  (           \
00229            (x)==PIX_FMT_YUV410P     \
00230         || (x)==PIX_FMT_YUV420P     \
00231         || (x)==PIX_FMT_YUV411P     \
00232         || (x)==PIX_FMT_YUV422P     \
00233         || (x)==PIX_FMT_YUV444P     \
00234         || (x)==PIX_FMT_YUV440P     \
00235         || (x)==PIX_FMT_NV12        \
00236         || (x)==PIX_FMT_NV21        \
00237     )
00238 #define isYUV(x)        (           \
00239            (x)==PIX_FMT_UYVY422     \
00240         || (x)==PIX_FMT_YUYV422     \
00241         || isPlanarYUV(x)           \
00242     )
00243 #define isGray(x)       (           \
00244            (x)==PIX_FMT_GRAY8       \
00245         || (x)==PIX_FMT_GRAY16BE    \
00246         || (x)==PIX_FMT_GRAY16LE    \
00247     )
00248 #define isGray16(x)     (           \
00249            (x)==PIX_FMT_GRAY16BE    \
00250         || (x)==PIX_FMT_GRAY16LE    \
00251     )
00252 #define isRGB(x)        (           \
00253            (x)==PIX_FMT_RGB32       \
00254         || (x)==PIX_FMT_RGB32_1     \
00255         || (x)==PIX_FMT_RGB24       \
00256         || (x)==PIX_FMT_RGB565      \
00257         || (x)==PIX_FMT_RGB555      \
00258         || (x)==PIX_FMT_RGB8        \
00259         || (x)==PIX_FMT_RGB4        \
00260         || (x)==PIX_FMT_RGB4_BYTE   \
00261         || (x)==PIX_FMT_MONOBLACK   \
00262         || (x)==PIX_FMT_MONOWHITE   \
00263     )
00264 #define isBGR(x)        (           \
00265            (x)==PIX_FMT_BGR32       \
00266         || (x)==PIX_FMT_BGR32_1     \
00267         || (x)==PIX_FMT_BGR24       \
00268         || (x)==PIX_FMT_BGR565      \
00269         || (x)==PIX_FMT_BGR555      \
00270         || (x)==PIX_FMT_BGR8        \
00271         || (x)==PIX_FMT_BGR4        \
00272         || (x)==PIX_FMT_BGR4_BYTE   \
00273         || (x)==PIX_FMT_MONOBLACK   \
00274         || (x)==PIX_FMT_MONOWHITE   \
00275     )
00276 #define isALPHA(x)      (           \
00277            (x)==PIX_FMT_BGR32       \
00278         || (x)==PIX_FMT_BGR32_1     \
00279         || (x)==PIX_FMT_RGB32       \
00280         || (x)==PIX_FMT_RGB32_1     \
00281         || (x)==PIX_FMT_YUVA420P    \
00282     )
00283 
00284 static inline int fmt_depth(int fmt)
00285 {
00286     switch(fmt) {
00287         case PIX_FMT_BGRA:
00288         case PIX_FMT_ABGR:
00289         case PIX_FMT_RGBA:
00290         case PIX_FMT_ARGB:
00291             return 32;
00292         case PIX_FMT_BGR24:
00293         case PIX_FMT_RGB24:
00294             return 24;
00295         case PIX_FMT_BGR565:
00296         case PIX_FMT_RGB565:
00297         case PIX_FMT_GRAY16BE:
00298         case PIX_FMT_GRAY16LE:
00299             return 16;
00300         case PIX_FMT_BGR555:
00301         case PIX_FMT_RGB555:
00302             return 15;
00303         case PIX_FMT_BGR8:
00304         case PIX_FMT_RGB8:
00305             return 8;
00306         case PIX_FMT_BGR4:
00307         case PIX_FMT_RGB4:
00308         case PIX_FMT_BGR4_BYTE:
00309         case PIX_FMT_RGB4_BYTE:
00310             return 4;
00311         case PIX_FMT_MONOBLACK:
00312         case PIX_FMT_MONOWHITE:
00313             return 1;
00314         default:
00315             return 0;
00316     }
00317 }
00318 
00319 extern const uint64_t ff_dither4[2];
00320 extern const uint64_t ff_dither8[2];
00321 
00322 extern const AVClass sws_context_class;
00323 
00324 #endif /* SWSCALE_SWSCALE_INTERNAL_H */