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libswscale/swscale_internal.h

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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 #if ARCH_X86
00037 #define VOFW 5120
00038 #else
00039 #define VOFW 2048 // faster on PPC and not tested on others
00040 #endif
00041 
00042 #define VOF  (VOFW*2)
00043 
00044 #ifdef WORDS_BIGENDIAN
00045 #define ALT32_CORR (-1)
00046 #else
00047 #define ALT32_CORR   1
00048 #endif
00049 
00050 #if ARCH_X86_64
00051 #   define APCK_PTR2 8
00052 #   define APCK_COEF 16
00053 #   define APCK_SIZE 24
00054 #else
00055 #   define APCK_PTR2 4
00056 #   define APCK_COEF 8
00057 #   define APCK_SIZE 16
00058 #endif
00059 
00060 struct SwsContext;
00061 
00062 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
00063              int srcSliceH, uint8_t* dst[], int dstStride[]);
00064 
00065 /* This struct should be aligned on at least a 32-byte boundary. */
00066 typedef struct SwsContext{
00070     const AVClass *av_class;
00071 
00076     SwsFunc swScale;
00077     int srcW, srcH, dstH;
00078     int chrSrcW, chrSrcH, chrDstW, chrDstH;
00079     int lumXInc, chrXInc;
00080     int lumYInc, chrYInc;
00081     enum PixelFormat dstFormat, srcFormat;  
00082     int origDstFormat, origSrcFormat;       
00083     int chrSrcHSubSample, chrSrcVSubSample;
00084     int chrIntHSubSample, chrIntVSubSample;
00085     int chrDstHSubSample, chrDstVSubSample;
00086     int vChrDrop;
00087     int sliceDir;
00088     double param[2];
00089 
00090     uint32_t pal_yuv[256];
00091     uint32_t pal_rgb[256];
00092 
00093     int16_t **lumPixBuf;
00094     int16_t **chrPixBuf;
00095     int16_t *hLumFilter;
00096     int16_t *hLumFilterPos;
00097     int16_t *hChrFilter;
00098     int16_t *hChrFilterPos;
00099     int16_t *vLumFilter;
00100     int16_t *vLumFilterPos;
00101     int16_t *vChrFilter;
00102     int16_t *vChrFilterPos;
00103 
00104     uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
00105 
00106     int hLumFilterSize;
00107     int hChrFilterSize;
00108     int vLumFilterSize;
00109     int vChrFilterSize;
00110     int vLumBufSize;
00111     int vChrBufSize;
00112 
00113     uint8_t *funnyYCode;
00114     uint8_t *funnyUVCode;
00115     int32_t *lumMmx2FilterPos;
00116     int32_t *chrMmx2FilterPos;
00117     int16_t *lumMmx2Filter;
00118     int16_t *chrMmx2Filter;
00119 
00120     int canMMX2BeUsed;
00121 
00122     int lastInLumBuf;
00123     int lastInChrBuf;
00124     int lumBufIndex;
00125     int chrBufIndex;
00126     int dstY;
00127     int flags;
00128     void * yuvTable;            // pointer to the yuv->rgb table start so it can be freed()
00129     uint8_t * table_rV[256];
00130     uint8_t * table_gU[256];
00131     int    table_gV[256];
00132     uint8_t * table_bU[256];
00133 
00134     //Colorspace stuff
00135     int contrast, brightness, saturation;    // for sws_getColorspaceDetails
00136     int srcColorspaceTable[4];
00137     int dstColorspaceTable[4];
00138     int srcRange, dstRange;
00139     int yuv2rgb_y_offset;
00140     int yuv2rgb_y_coeff;
00141     int yuv2rgb_v2r_coeff;
00142     int yuv2rgb_v2g_coeff;
00143     int yuv2rgb_u2g_coeff;
00144     int yuv2rgb_u2b_coeff;
00145 
00146 #define RED_DITHER            "0*8"
00147 #define GREEN_DITHER          "1*8"
00148 #define BLUE_DITHER           "2*8"
00149 #define Y_COEFF               "3*8"
00150 #define VR_COEFF              "4*8"
00151 #define UB_COEFF              "5*8"
00152 #define VG_COEFF              "6*8"
00153 #define UG_COEFF              "7*8"
00154 #define Y_OFFSET              "8*8"
00155 #define U_OFFSET              "9*8"
00156 #define V_OFFSET              "10*8"
00157 #define LUM_MMX_FILTER_OFFSET "11*8"
00158 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
00159 #define DSTW_OFFSET           "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
00160 #define ESP_OFFSET            "11*8+4*4*256*2+8"
00161 #define VROUNDER_OFFSET       "11*8+4*4*256*2+16"
00162 #define U_TEMP                "11*8+4*4*256*2+24"
00163 #define V_TEMP                "11*8+4*4*256*2+32"
00164 
00165     uint64_t redDither   __attribute__((aligned(8)));
00166     uint64_t greenDither __attribute__((aligned(8)));
00167     uint64_t blueDither  __attribute__((aligned(8)));
00168 
00169     uint64_t yCoeff      __attribute__((aligned(8)));
00170     uint64_t vrCoeff     __attribute__((aligned(8)));
00171     uint64_t ubCoeff     __attribute__((aligned(8)));
00172     uint64_t vgCoeff     __attribute__((aligned(8)));
00173     uint64_t ugCoeff     __attribute__((aligned(8)));
00174     uint64_t yOffset     __attribute__((aligned(8)));
00175     uint64_t uOffset     __attribute__((aligned(8)));
00176     uint64_t vOffset     __attribute__((aligned(8)));
00177     int32_t  lumMmxFilter[4*MAX_FILTER_SIZE];
00178     int32_t  chrMmxFilter[4*MAX_FILTER_SIZE];
00179     int dstW;
00180     uint64_t esp          __attribute__((aligned(8)));
00181     uint64_t vRounder     __attribute__((aligned(8)));
00182     uint64_t u_temp       __attribute__((aligned(8)));
00183     uint64_t v_temp       __attribute__((aligned(8)));
00184 
00185 #if HAVE_ALTIVEC
00186 
00187   vector signed short   CY;
00188   vector signed short   CRV;
00189   vector signed short   CBU;
00190   vector signed short   CGU;
00191   vector signed short   CGV;
00192   vector signed short   OY;
00193   vector unsigned short CSHIFT;
00194   vector signed short   *vYCoeffsBank, *vCCoeffsBank;
00195 
00196 #endif
00197 
00198 
00199 #if ARCH_BFIN
00200     uint32_t oy           __attribute__((aligned(4)));
00201     uint32_t oc           __attribute__((aligned(4)));
00202     uint32_t zero         __attribute__((aligned(4)));
00203     uint32_t cy           __attribute__((aligned(4)));
00204     uint32_t crv          __attribute__((aligned(4)));
00205     uint32_t rmask        __attribute__((aligned(4)));
00206     uint32_t cbu          __attribute__((aligned(4)));
00207     uint32_t bmask        __attribute__((aligned(4)));
00208     uint32_t cgu          __attribute__((aligned(4)));
00209     uint32_t cgv          __attribute__((aligned(4)));
00210     uint32_t gmask        __attribute__((aligned(4)));
00211 #endif
00212 
00213 #if HAVE_VIS
00214     uint64_t sparc_coeffs[10] __attribute__((aligned(8)));
00215 #endif
00216 
00217 } SwsContext;
00218 //FIXME check init (where 0)
00219 
00220 SwsFunc sws_yuv2rgb_get_func_ptr (SwsContext *c);
00221 int sws_yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
00222 
00223 void sws_yuv2rgb_altivec_init_tables (SwsContext *c, const int inv_table[4],int brightness,int contrast, int saturation);
00224 SwsFunc sws_yuv2rgb_init_altivec (SwsContext *c);
00225 void altivec_yuv2packedX (SwsContext *c,
00226                           int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
00227                           int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
00228                           uint8_t *dest, int dstW, int dstY);
00229 
00230 const char *sws_format_name(int format);
00231 
00232 //FIXME replace this with something faster
00233 #define isPlanarYUV(x)  (           \
00234            (x)==PIX_FMT_YUV410P     \
00235         || (x)==PIX_FMT_YUV420P     \
00236         || (x)==PIX_FMT_YUV411P     \
00237         || (x)==PIX_FMT_YUV422P     \
00238         || (x)==PIX_FMT_YUV444P     \
00239         || (x)==PIX_FMT_YUV440P     \
00240         || (x)==PIX_FMT_NV12        \
00241         || (x)==PIX_FMT_NV21        \
00242     )
00243 #define isYUV(x)        (           \
00244            (x)==PIX_FMT_UYVY422     \
00245         || (x)==PIX_FMT_YUYV422     \
00246         || isPlanarYUV(x)           \
00247     )
00248 #define isGray(x)       (           \
00249            (x)==PIX_FMT_GRAY8       \
00250         || (x)==PIX_FMT_GRAY16BE    \
00251         || (x)==PIX_FMT_GRAY16LE    \
00252     )
00253 #define isGray16(x)     (           \
00254            (x)==PIX_FMT_GRAY16BE    \
00255         || (x)==PIX_FMT_GRAY16LE    \
00256     )
00257 #define isRGB(x)        (           \
00258            (x)==PIX_FMT_RGB32       \
00259         || (x)==PIX_FMT_RGB32_1     \
00260         || (x)==PIX_FMT_RGB24       \
00261         || (x)==PIX_FMT_RGB565      \
00262         || (x)==PIX_FMT_RGB555      \
00263         || (x)==PIX_FMT_RGB8        \
00264         || (x)==PIX_FMT_RGB4        \
00265         || (x)==PIX_FMT_RGB4_BYTE   \
00266         || (x)==PIX_FMT_MONOBLACK   \
00267         || (x)==PIX_FMT_MONOWHITE   \
00268     )
00269 #define isBGR(x)        (           \
00270            (x)==PIX_FMT_BGR32       \
00271         || (x)==PIX_FMT_BGR32_1     \
00272         || (x)==PIX_FMT_BGR24       \
00273         || (x)==PIX_FMT_BGR565      \
00274         || (x)==PIX_FMT_BGR555      \
00275         || (x)==PIX_FMT_BGR8        \
00276         || (x)==PIX_FMT_BGR4        \
00277         || (x)==PIX_FMT_BGR4_BYTE   \
00278         || (x)==PIX_FMT_MONOBLACK   \
00279         || (x)==PIX_FMT_MONOWHITE   \
00280     )
00281 #define isALPHA(x)      (           \
00282            (x)==PIX_FMT_BGR32       \
00283         || (x)==PIX_FMT_BGR32_1     \
00284         || (x)==PIX_FMT_RGB32       \
00285         || (x)==PIX_FMT_RGB32_1     \
00286         || (x)==PIX_FMT_YUVA420P    \
00287     )
00288 
00289 static inline int fmt_depth(int fmt)
00290 {
00291     switch(fmt) {
00292         case PIX_FMT_BGRA:
00293         case PIX_FMT_ABGR:
00294         case PIX_FMT_RGBA:
00295         case PIX_FMT_ARGB:
00296             return 32;
00297         case PIX_FMT_BGR24:
00298         case PIX_FMT_RGB24:
00299             return 24;
00300         case PIX_FMT_BGR565:
00301         case PIX_FMT_RGB565:
00302         case PIX_FMT_GRAY16BE:
00303         case PIX_FMT_GRAY16LE:
00304             return 16;
00305         case PIX_FMT_BGR555:
00306         case PIX_FMT_RGB555:
00307             return 15;
00308         case PIX_FMT_BGR8:
00309         case PIX_FMT_RGB8:
00310             return 8;
00311         case PIX_FMT_BGR4:
00312         case PIX_FMT_RGB4:
00313         case PIX_FMT_BGR4_BYTE:
00314         case PIX_FMT_RGB4_BYTE:
00315             return 4;
00316         case PIX_FMT_MONOBLACK:
00317         case PIX_FMT_MONOWHITE:
00318             return 1;
00319         default:
00320             return 0;
00321     }
00322 }
00323 
00324 extern const uint64_t ff_dither4[2];
00325 extern const uint64_t ff_dither8[2];
00326 
00327 extern const AVClass sws_context_class;
00328 
00329 #endif /* SWSCALE_SWSCALE_INTERNAL_H */

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