MythTV: 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 FFMPEG_SWSCALE_INTERNAL_H
00022 #define FFMPEG_SWSCALE_INTERNAL_H
00023 
00024 #ifdef HAVE_ALTIVEC_H
00025 #include <altivec.h>
00026 #endif
00027 
00028 #include "avutil.h"
00029 
00030 #define MAX_FILTER_SIZE 256
00031 
00032 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
00033              int srcSliceH, uint8_t* dst[], int dstStride[]);
00034 
00035 /* this struct should be aligned on at least 32-byte boundary */
00036 typedef struct SwsContext{
00040     AVClass *av_class;
00041 
00046     SwsFunc swScale;
00047     int srcW, srcH, dstH;
00048     int chrSrcW, chrSrcH, chrDstW, chrDstH;
00049     int lumXInc, chrXInc;
00050     int lumYInc, chrYInc;
00051     int dstFormat, srcFormat;               
00052     int origDstFormat, origSrcFormat;       
00053     int chrSrcHSubSample, chrSrcVSubSample;
00054     int chrIntHSubSample, chrIntVSubSample;
00055     int chrDstHSubSample, chrDstVSubSample;
00056     int vChrDrop;
00057     int sliceDir;
00058     double param[2];
00059 
00060     int16_t **lumPixBuf;
00061     int16_t **chrPixBuf;
00062     int16_t *hLumFilter;
00063     int16_t *hLumFilterPos;
00064     int16_t *hChrFilter;
00065     int16_t *hChrFilterPos;
00066     int16_t *vLumFilter;
00067     int16_t *vLumFilterPos;
00068     int16_t *vChrFilter;
00069     int16_t *vChrFilterPos;
00070 
00071     uint8_t formatConvBuffer[4000]; //FIXME dynamic alloc, but we have to change a lot of code for this to be useful
00072 
00073     int hLumFilterSize;
00074     int hChrFilterSize;
00075     int vLumFilterSize;
00076     int vChrFilterSize;
00077     int vLumBufSize;
00078     int vChrBufSize;
00079 
00080     uint8_t *funnyYCode;
00081     uint8_t *funnyUVCode;
00082     int32_t *lumMmx2FilterPos;
00083     int32_t *chrMmx2FilterPos;
00084     int16_t *lumMmx2Filter;
00085     int16_t *chrMmx2Filter;
00086 
00087     int canMMX2BeUsed;
00088 
00089     int lastInLumBuf;
00090     int lastInChrBuf;
00091     int lumBufIndex;
00092     int chrBufIndex;
00093     int dstY;
00094     int flags;
00095     void * yuvTable;            // pointer to the yuv->rgb table start so it can be freed()
00096     uint8_t * table_rV[256];
00097     uint8_t * table_gU[256];
00098     int    table_gV[256];
00099     uint8_t * table_bU[256];
00100 
00101     //Colorspace stuff
00102     int contrast, brightness, saturation;    // for sws_getColorspaceDetails
00103     int srcColorspaceTable[4];
00104     int dstColorspaceTable[4];
00105     int srcRange, dstRange;
00106 
00107 #define RED_DITHER            "0*8"
00108 #define GREEN_DITHER          "1*8"
00109 #define BLUE_DITHER           "2*8"
00110 #define Y_COEFF               "3*8"
00111 #define VR_COEFF              "4*8"
00112 #define UB_COEFF              "5*8"
00113 #define VG_COEFF              "6*8"
00114 #define UG_COEFF              "7*8"
00115 #define Y_OFFSET              "8*8"
00116 #define U_OFFSET              "9*8"
00117 #define V_OFFSET              "10*8"
00118 #define LUM_MMX_FILTER_OFFSET "11*8"
00119 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
00120 #define DSTW_OFFSET           "11*8+4*4*256*2" //do not change, it is hardcoded in the asm
00121 #define ESP_OFFSET            "11*8+4*4*256*2+8"
00122 #define VROUNDER_OFFSET       "11*8+4*4*256*2+16"
00123 #define U_TEMP                "11*8+4*4*256*2+24"
00124 #define V_TEMP                "11*8+4*4*256*2+32"
00125 
00126     uint64_t redDither   __attribute__((aligned(8)));
00127     uint64_t greenDither __attribute__((aligned(8)));
00128     uint64_t blueDither  __attribute__((aligned(8)));
00129 
00130     uint64_t yCoeff      __attribute__((aligned(8)));
00131     uint64_t vrCoeff     __attribute__((aligned(8)));
00132     uint64_t ubCoeff     __attribute__((aligned(8)));
00133     uint64_t vgCoeff     __attribute__((aligned(8)));
00134     uint64_t ugCoeff     __attribute__((aligned(8)));
00135     uint64_t yOffset     __attribute__((aligned(8)));
00136     uint64_t uOffset     __attribute__((aligned(8)));
00137     uint64_t vOffset     __attribute__((aligned(8)));
00138     int32_t  lumMmxFilter[4*MAX_FILTER_SIZE];
00139     int32_t  chrMmxFilter[4*MAX_FILTER_SIZE];
00140     int dstW;
00141     uint64_t esp          __attribute__((aligned(8)));
00142     uint64_t vRounder     __attribute__((aligned(8)));
00143     uint64_t u_temp       __attribute__((aligned(8)));
00144     uint64_t v_temp       __attribute__((aligned(8)));
00145 
00146 #ifdef HAVE_ALTIVEC
00147 
00148   vector signed short   CY;
00149   vector signed short   CRV;
00150   vector signed short   CBU;
00151   vector signed short   CGU;
00152   vector signed short   CGV;
00153   vector signed short   OY;
00154   vector unsigned short CSHIFT;
00155   vector signed short   *vYCoeffsBank, *vCCoeffsBank;
00156 
00157 #endif
00158 
00159 
00160 #ifdef ARCH_BFIN
00161     uint32_t oy           __attribute__((aligned(4)));
00162     uint32_t oc           __attribute__((aligned(4)));
00163     uint32_t zero         __attribute__((aligned(4)));
00164     uint32_t cy           __attribute__((aligned(4)));
00165     uint32_t crv          __attribute__((aligned(4)));
00166     uint32_t rmask        __attribute__((aligned(4)));
00167     uint32_t cbu          __attribute__((aligned(4)));
00168     uint32_t bmask        __attribute__((aligned(4)));
00169     uint32_t cgu          __attribute__((aligned(4)));
00170     uint32_t cgv          __attribute__((aligned(4)));
00171     uint32_t gmask        __attribute__((aligned(4)));
00172 #endif
00173 
00174 #ifdef HAVE_VIS
00175     uint64_t sparc_coeffs[10] __attribute__((aligned(8)));
00176 #endif
00177 
00178 } SwsContext;
00179 //FIXME check init (where 0)
00180 
00181 SwsFunc yuv2rgb_get_func_ptr (SwsContext *c);
00182 int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
00183 
00184 char *sws_format_name(int format);
00185 
00186 //FIXME replace this with something faster
00187 #define isPlanarYUV(x)  (           \
00188            (x)==PIX_FMT_YUV410P     \
00189         || (x)==PIX_FMT_YUV420P     \
00190         || (x)==PIX_FMT_YUV411P     \
00191         || (x)==PIX_FMT_YUV422P     \
00192         || (x)==PIX_FMT_YUV444P     \
00193         || (x)==PIX_FMT_YUV440P     \
00194         || (x)==PIX_FMT_NV12        \
00195         || (x)==PIX_FMT_NV21        \
00196     )
00197 #define isYUV(x)        (           \
00198            (x)==PIX_FMT_UYVY422     \
00199         || (x)==PIX_FMT_YUYV422     \
00200         || isPlanarYUV(x)           \
00201     )
00202 #define isGray(x)       (           \
00203            (x)==PIX_FMT_GRAY8       \
00204         || (x)==PIX_FMT_GRAY16BE    \
00205         || (x)==PIX_FMT_GRAY16LE    \
00206     )
00207 #define isGray16(x)     (           \
00208            (x)==PIX_FMT_GRAY16BE    \
00209         || (x)==PIX_FMT_GRAY16LE    \
00210     )
00211 #define isRGB(x)        (           \
00212            (x)==PIX_FMT_BGR32       \
00213         || (x)==PIX_FMT_RGB24       \
00214         || (x)==PIX_FMT_RGB565      \
00215         || (x)==PIX_FMT_RGB555      \
00216         || (x)==PIX_FMT_RGB8        \
00217         || (x)==PIX_FMT_RGB4        \
00218         || (x)==PIX_FMT_RGB4_BYTE   \
00219         || (x)==PIX_FMT_MONOBLACK   \
00220     )
00221 #define isBGR(x)        (           \
00222            (x)==PIX_FMT_RGB32       \
00223         || (x)==PIX_FMT_BGR24       \
00224         || (x)==PIX_FMT_BGR565      \
00225         || (x)==PIX_FMT_BGR555      \
00226         || (x)==PIX_FMT_BGR8        \
00227         || (x)==PIX_FMT_BGR4        \
00228         || (x)==PIX_FMT_BGR4_BYTE   \
00229         || (x)==PIX_FMT_MONOBLACK   \
00230     )
00231 
00232 static inline int fmt_depth(int fmt)
00233 {
00234     switch(fmt) {
00235         case PIX_FMT_BGRA:
00236         case PIX_FMT_ABGR:
00237         case PIX_FMT_RGBA:
00238         case PIX_FMT_ARGB:
00239             return 32;
00240         case PIX_FMT_BGR24:
00241         case PIX_FMT_RGB24:
00242             return 24;
00243         case PIX_FMT_BGR565:
00244         case PIX_FMT_RGB565:
00245         case PIX_FMT_GRAY16BE:
00246         case PIX_FMT_GRAY16LE:
00247             return 16;
00248         case PIX_FMT_BGR555:
00249         case PIX_FMT_RGB555:
00250             return 15;
00251         case PIX_FMT_BGR8:
00252         case PIX_FMT_RGB8:
00253             return 8;
00254         case PIX_FMT_BGR4:
00255         case PIX_FMT_RGB4:
00256         case PIX_FMT_BGR4_BYTE:
00257         case PIX_FMT_RGB4_BYTE:
00258             return 4;
00259         case PIX_FMT_MONOBLACK:
00260             return 1;
00261         default:
00262             return 0;
00263     }
00264 }
00265 
00266 #endif /* FFMPEG_SWSCALE_INTERNAL_H */