00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021 #include <inttypes.h>
00022 #include <string.h>
00023 #include <math.h>
00024 #include <stdio.h>
00025 #include "config.h"
00026 #include <assert.h>
00027 #include "swscale.h"
00028 #include "swscale_internal.h"
00029 #include "rgb2rgb.h"
00030 #include "libavutil/intreadwrite.h"
00031 #include "libavutil/cpu.h"
00032 #include "libavutil/avutil.h"
00033 #include "libavutil/mathematics.h"
00034 #include "libavutil/bswap.h"
00035 #include "libavutil/pixdesc.h"
00036
00037 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_1)[8][8] = {
00038 { 0, 1, 0, 1, 0, 1, 0, 1,},
00039 { 1, 0, 1, 0, 1, 0, 1, 0,},
00040 { 0, 1, 0, 1, 0, 1, 0, 1,},
00041 { 1, 0, 1, 0, 1, 0, 1, 0,},
00042 { 0, 1, 0, 1, 0, 1, 0, 1,},
00043 { 1, 0, 1, 0, 1, 0, 1, 0,},
00044 { 0, 1, 0, 1, 0, 1, 0, 1,},
00045 { 1, 0, 1, 0, 1, 0, 1, 0,},
00046 };
00047 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_3)[8][8] = {
00048 { 1, 2, 1, 2, 1, 2, 1, 2,},
00049 { 3, 0, 3, 0, 3, 0, 3, 0,},
00050 { 1, 2, 1, 2, 1, 2, 1, 2,},
00051 { 3, 0, 3, 0, 3, 0, 3, 0,},
00052 { 1, 2, 1, 2, 1, 2, 1, 2,},
00053 { 3, 0, 3, 0, 3, 0, 3, 0,},
00054 { 1, 2, 1, 2, 1, 2, 1, 2,},
00055 { 3, 0, 3, 0, 3, 0, 3, 0,},
00056 };
00057 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_64)[8][8] = {
00058 { 18, 34, 30, 46, 17, 33, 29, 45,},
00059 { 50, 2, 62, 14, 49, 1, 61, 13,},
00060 { 26, 42, 22, 38, 25, 41, 21, 37,},
00061 { 58, 10, 54, 6, 57, 9, 53, 5,},
00062 { 16, 32, 28, 44, 19, 35, 31, 47,},
00063 { 48, 0, 60, 12, 51, 3, 63, 15,},
00064 { 24, 40, 20, 36, 27, 43, 23, 39,},
00065 { 56, 8, 52, 4, 59, 11, 55, 7,},
00066 };
00067 extern const uint8_t dither_8x8_128[8][8];
00068 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_256)[8][8] = {
00069 { 72, 136, 120, 184, 68, 132, 116, 180,},
00070 { 200, 8, 248, 56, 196, 4, 244, 52,},
00071 { 104, 168, 88, 152, 100, 164, 84, 148,},
00072 { 232, 40, 216, 24, 228, 36, 212, 20,},
00073 { 64, 128, 102, 176, 76, 140, 124, 188,},
00074 { 192, 0, 240, 48, 204, 12, 252, 60,},
00075 { 96, 160, 80, 144, 108, 172, 92, 156,},
00076 { 224, 32, 208, 16, 236, 44, 220, 28,},
00077 };
00078
00079 #define RGB2YUV_SHIFT 15
00080 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00081 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00082 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00083 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00084 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00085 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00086 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00087 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00088 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00089
00090 static void fillPlane(uint8_t *plane, int stride, int width, int height, int y,
00091 uint8_t val)
00092 {
00093 int i;
00094 uint8_t *ptr = plane + stride * y;
00095 for (i = 0; i < height; i++) {
00096 memset(ptr, val, width);
00097 ptr += stride;
00098 }
00099 }
00100
00101 static void copyPlane(const uint8_t *src, int srcStride,
00102 int srcSliceY, int srcSliceH, int width,
00103 uint8_t *dst, int dstStride)
00104 {
00105 dst += dstStride * srcSliceY;
00106 if (dstStride == srcStride && srcStride > 0) {
00107 memcpy(dst, src, srcSliceH * dstStride);
00108 } else {
00109 int i;
00110 for (i = 0; i < srcSliceH; i++) {
00111 memcpy(dst, src, width);
00112 src += srcStride;
00113 dst += dstStride;
00114 }
00115 }
00116 }
00117
00118 static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],
00119 int srcStride[], int srcSliceY,
00120 int srcSliceH, uint8_t *dstParam[],
00121 int dstStride[])
00122 {
00123 uint8_t *dst = dstParam[1] + dstStride[1] * srcSliceY / 2;
00124
00125 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
00126 dstParam[0], dstStride[0]);
00127
00128 if (c->dstFormat == PIX_FMT_NV12)
00129 interleaveBytes(src[1], src[2], dst, c->srcW / 2, srcSliceH / 2,
00130 srcStride[1], srcStride[2], dstStride[0]);
00131 else
00132 interleaveBytes(src[2], src[1], dst, c->srcW / 2, srcSliceH / 2,
00133 srcStride[2], srcStride[1], dstStride[0]);
00134
00135 return srcSliceH;
00136 }
00137
00138 static int planarToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
00139 int srcStride[], int srcSliceY, int srcSliceH,
00140 uint8_t *dstParam[], int dstStride[])
00141 {
00142 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
00143
00144 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
00145 srcStride[1], dstStride[0]);
00146
00147 return srcSliceH;
00148 }
00149
00150 static int planarToUyvyWrapper(SwsContext *c, const uint8_t *src[],
00151 int srcStride[], int srcSliceY, int srcSliceH,
00152 uint8_t *dstParam[], int dstStride[])
00153 {
00154 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
00155
00156 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
00157 srcStride[1], dstStride[0]);
00158
00159 return srcSliceH;
00160 }
00161
00162 static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
00163 int srcStride[], int srcSliceY, int srcSliceH,
00164 uint8_t *dstParam[], int dstStride[])
00165 {
00166 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
00167
00168 yuv422ptoyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
00169 srcStride[1], dstStride[0]);
00170
00171 return srcSliceH;
00172 }
00173
00174 static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t *src[],
00175 int srcStride[], int srcSliceY, int srcSliceH,
00176 uint8_t *dstParam[], int dstStride[])
00177 {
00178 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
00179
00180 yuv422ptouyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
00181 srcStride[1], dstStride[0]);
00182
00183 return srcSliceH;
00184 }
00185
00186 static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
00187 int srcStride[], int srcSliceY, int srcSliceH,
00188 uint8_t *dstParam[], int dstStride[])
00189 {
00190 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
00191 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
00192 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
00193
00194 yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
00195 dstStride[1], srcStride[0]);
00196
00197 if (dstParam[3])
00198 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
00199
00200 return srcSliceH;
00201 }
00202
00203 static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
00204 int srcStride[], int srcSliceY, int srcSliceH,
00205 uint8_t *dstParam[], int dstStride[])
00206 {
00207 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
00208 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
00209 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
00210
00211 yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
00212 dstStride[1], srcStride[0]);
00213
00214 return srcSliceH;
00215 }
00216
00217 static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
00218 int srcStride[], int srcSliceY, int srcSliceH,
00219 uint8_t *dstParam[], int dstStride[])
00220 {
00221 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
00222 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
00223 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
00224
00225 uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
00226 dstStride[1], srcStride[0]);
00227
00228 if (dstParam[3])
00229 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
00230
00231 return srcSliceH;
00232 }
00233
00234 static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
00235 int srcStride[], int srcSliceY, int srcSliceH,
00236 uint8_t *dstParam[], int dstStride[])
00237 {
00238 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
00239 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
00240 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
00241
00242 uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
00243 dstStride[1], srcStride[0]);
00244
00245 return srcSliceH;
00246 }
00247
00248 static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels,
00249 const uint8_t *palette)
00250 {
00251 int i;
00252 for (i = 0; i < num_pixels; i++)
00253 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | (src[(i << 1) + 1] << 24);
00254 }
00255
00256 static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels,
00257 const uint8_t *palette)
00258 {
00259 int i;
00260
00261 for (i = 0; i < num_pixels; i++)
00262 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | src[(i << 1) + 1];
00263 }
00264
00265 static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels,
00266 const uint8_t *palette)
00267 {
00268 int i;
00269
00270 for (i = 0; i < num_pixels; i++) {
00271
00272 dst[0] = palette[src[i << 1] * 4 + 0];
00273 dst[1] = palette[src[i << 1] * 4 + 1];
00274 dst[2] = palette[src[i << 1] * 4 + 2];
00275 dst += 3;
00276 }
00277 }
00278
00279 static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
00280 int srcStride[], int srcSliceY, int srcSliceH,
00281 uint8_t *dst[], int dstStride[])
00282 {
00283 int i, j;
00284 int srcstr = srcStride[0] >> 1;
00285 int dststr = dstStride[0] >> 1;
00286 uint16_t *dstPtr = (uint16_t *) dst[0];
00287 const uint16_t *srcPtr = (const uint16_t *) src[0];
00288 int min_stride = FFMIN(srcstr, dststr);
00289
00290 for (i = 0; i < srcSliceH; i++) {
00291 for (j = 0; j < min_stride; j++) {
00292 dstPtr[j] = av_bswap16(srcPtr[j]);
00293 }
00294 srcPtr += srcstr;
00295 dstPtr += dststr;
00296 }
00297
00298 return srcSliceH;
00299 }
00300
00301 static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
00302 int srcSliceY, int srcSliceH, uint8_t *dst[],
00303 int dstStride[])
00304 {
00305 const enum PixelFormat srcFormat = c->srcFormat;
00306 const enum PixelFormat dstFormat = c->dstFormat;
00307 void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels,
00308 const uint8_t *palette) = NULL;
00309 int i;
00310 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
00311 const uint8_t *srcPtr = src[0];
00312
00313 if (srcFormat == PIX_FMT_Y400A) {
00314 switch (dstFormat) {
00315 case PIX_FMT_RGB32 : conv = gray8aToPacked32; break;
00316 case PIX_FMT_BGR32 : conv = gray8aToPacked32; break;
00317 case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
00318 case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
00319 case PIX_FMT_RGB24 : conv = gray8aToPacked24; break;
00320 case PIX_FMT_BGR24 : conv = gray8aToPacked24; break;
00321 }
00322 } else if (usePal(srcFormat)) {
00323 switch (dstFormat) {
00324 case PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
00325 case PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
00326 case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
00327 case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
00328 case PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break;
00329 case PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break;
00330 }
00331 }
00332
00333 if (!conv)
00334 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
00335 sws_format_name(srcFormat), sws_format_name(dstFormat));
00336 else {
00337 for (i = 0; i < srcSliceH; i++) {
00338 conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
00339 srcPtr += srcStride[0];
00340 dstPtr += dstStride[0];
00341 }
00342 }
00343
00344 return srcSliceH;
00345 }
00346
00347 #define isRGBA32(x) ( \
00348 (x) == PIX_FMT_ARGB \
00349 || (x) == PIX_FMT_RGBA \
00350 || (x) == PIX_FMT_BGRA \
00351 || (x) == PIX_FMT_ABGR \
00352 )
00353
00354
00355 typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);
00356 static rgbConvFn findRgbConvFn(SwsContext *c)
00357 {
00358 const enum PixelFormat srcFormat = c->srcFormat;
00359 const enum PixelFormat dstFormat = c->dstFormat;
00360 const int srcId = c->srcFormatBpp;
00361 const int dstId = c->dstFormatBpp;
00362 rgbConvFn conv = NULL;
00363
00364 #define IS_NOT_NE(bpp, fmt) \
00365 (((bpp + 7) >> 3) == 2 && \
00366 (!(av_pix_fmt_descriptors[fmt].flags & PIX_FMT_BE) != !HAVE_BIGENDIAN))
00367
00368
00369 if (IS_NOT_NE(srcId, srcFormat) || IS_NOT_NE(dstId, dstFormat))
00370 return NULL;
00371
00372 #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)
00373
00374 if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
00375 if ( CONV_IS(ABGR, RGBA)
00376 || CONV_IS(ARGB, BGRA)
00377 || CONV_IS(BGRA, ARGB)
00378 || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
00379 else if (CONV_IS(ABGR, ARGB)
00380 || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
00381 else if (CONV_IS(ABGR, BGRA)
00382 || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
00383 else if (CONV_IS(BGRA, RGBA)
00384 || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
00385 else if (CONV_IS(BGRA, ABGR)
00386 || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
00387 } else
00388
00389 if ((isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) ||
00390 (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
00391 switch (srcId | (dstId << 16)) {
00392 case 0x000F000C: conv = rgb12to15; break;
00393 case 0x000F0010: conv = rgb16to15; break;
00394 case 0x000F0018: conv = rgb24to15; break;
00395 case 0x000F0020: conv = rgb32to15; break;
00396 case 0x0010000F: conv = rgb15to16; break;
00397 case 0x00100018: conv = rgb24to16; break;
00398 case 0x00100020: conv = rgb32to16; break;
00399 case 0x0018000F: conv = rgb15to24; break;
00400 case 0x00180010: conv = rgb16to24; break;
00401 case 0x00180020: conv = rgb32to24; break;
00402 case 0x0020000F: conv = rgb15to32; break;
00403 case 0x00200010: conv = rgb16to32; break;
00404 case 0x00200018: conv = rgb24to32; break;
00405 }
00406 } else if ((isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) ||
00407 (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
00408 switch (srcId | (dstId << 16)) {
00409 case 0x000C000C: conv = rgb12tobgr12; break;
00410 case 0x000F000F: conv = rgb15tobgr15; break;
00411 case 0x000F0010: conv = rgb16tobgr15; break;
00412 case 0x000F0018: conv = rgb24tobgr15; break;
00413 case 0x000F0020: conv = rgb32tobgr15; break;
00414 case 0x0010000F: conv = rgb15tobgr16; break;
00415 case 0x00100010: conv = rgb16tobgr16; break;
00416 case 0x00100018: conv = rgb24tobgr16; break;
00417 case 0x00100020: conv = rgb32tobgr16; break;
00418 case 0x0018000F: conv = rgb15tobgr24; break;
00419 case 0x00180010: conv = rgb16tobgr24; break;
00420 case 0x00180018: conv = rgb24tobgr24; break;
00421 case 0x00180020: conv = rgb32tobgr24; break;
00422 case 0x0020000F: conv = rgb15tobgr32; break;
00423 case 0x00200010: conv = rgb16tobgr32; break;
00424 case 0x00200018: conv = rgb24tobgr32; break;
00425 }
00426 }
00427
00428 return conv;
00429 }
00430
00431
00432 static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
00433 int srcSliceY, int srcSliceH, uint8_t *dst[],
00434 int dstStride[])
00435
00436 {
00437 const enum PixelFormat srcFormat = c->srcFormat;
00438 const enum PixelFormat dstFormat = c->dstFormat;
00439 const int srcBpp = (c->srcFormatBpp + 7) >> 3;
00440 const int dstBpp = (c->dstFormatBpp + 7) >> 3;
00441 rgbConvFn conv = findRgbConvFn(c);
00442
00443 if (!conv) {
00444 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
00445 sws_format_name(srcFormat), sws_format_name(dstFormat));
00446 } else {
00447 const uint8_t *srcPtr = src[0];
00448 uint8_t *dstPtr = dst[0];
00449 if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) &&
00450 !isRGBA32(dstFormat))
00451 srcPtr += ALT32_CORR;
00452
00453 if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) &&
00454 !isRGBA32(srcFormat))
00455 dstPtr += ALT32_CORR;
00456
00457 if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&
00458 !(srcStride[0] % srcBpp))
00459 conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,
00460 srcSliceH * srcStride[0]);
00461 else {
00462 int i;
00463 dstPtr += dstStride[0] * srcSliceY;
00464
00465 for (i = 0; i < srcSliceH; i++) {
00466 conv(srcPtr, dstPtr, c->srcW * srcBpp);
00467 srcPtr += srcStride[0];
00468 dstPtr += dstStride[0];
00469 }
00470 }
00471 }
00472 return srcSliceH;
00473 }
00474
00475 static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
00476 int srcStride[], int srcSliceY, int srcSliceH,
00477 uint8_t *dst[], int dstStride[])
00478 {
00479 rgb24toyv12(
00480 src[0],
00481 dst[0] + srcSliceY * dstStride[0],
00482 dst[1] + (srcSliceY >> 1) * dstStride[1],
00483 dst[2] + (srcSliceY >> 1) * dstStride[2],
00484 c->srcW, srcSliceH,
00485 dstStride[0], dstStride[1], srcStride[0]);
00486 if (dst[3])
00487 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
00488 return srcSliceH;
00489 }
00490
00491 static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
00492 int srcStride[], int srcSliceY, int srcSliceH,
00493 uint8_t *dst[], int dstStride[])
00494 {
00495 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
00496 dst[0], dstStride[0]);
00497
00498 planar2x(src[1], dst[1] + dstStride[1] * (srcSliceY >> 1), c->chrSrcW,
00499 srcSliceH >> 2, srcStride[1], dstStride[1]);
00500 planar2x(src[2], dst[2] + dstStride[2] * (srcSliceY >> 1), c->chrSrcW,
00501 srcSliceH >> 2, srcStride[2], dstStride[2]);
00502 if (dst[3])
00503 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
00504 return srcSliceH;
00505 }
00506
00507
00508 static int packedCopyWrapper(SwsContext *c, const uint8_t *src[],
00509 int srcStride[], int srcSliceY, int srcSliceH,
00510 uint8_t *dst[], int dstStride[])
00511 {
00512 if (dstStride[0] == srcStride[0] && srcStride[0] > 0)
00513 memcpy(dst[0] + dstStride[0] * srcSliceY, src[0], srcSliceH * dstStride[0]);
00514 else {
00515 int i;
00516 const uint8_t *srcPtr = src[0];
00517 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
00518 int length = 0;
00519
00520
00521 while (length + c->srcW <= FFABS(dstStride[0]) &&
00522 length + c->srcW <= FFABS(srcStride[0]))
00523 length += c->srcW;
00524 assert(length != 0);
00525
00526 for (i = 0; i < srcSliceH; i++) {
00527 memcpy(dstPtr, srcPtr, length);
00528 srcPtr += srcStride[0];
00529 dstPtr += dstStride[0];
00530 }
00531 }
00532 return srcSliceH;
00533 }
00534
00535 #define clip9(x) av_clip_uintp2(x, 9)
00536 #define clip10(x) av_clip_uintp2(x, 10)
00537 #define DITHER_COPY(dst, dstStride, wfunc, src, srcStride, rfunc, dithers, shift, clip) \
00538 for (i = 0; i < height; i++) { \
00539 const uint8_t *dither = dithers[i & 7]; \
00540 for (j = 0; j < length - 7; j += 8) { \
00541 wfunc(&dst[j + 0], clip((rfunc(&src[j + 0]) + dither[0]) >> shift)); \
00542 wfunc(&dst[j + 1], clip((rfunc(&src[j + 1]) + dither[1]) >> shift)); \
00543 wfunc(&dst[j + 2], clip((rfunc(&src[j + 2]) + dither[2]) >> shift)); \
00544 wfunc(&dst[j + 3], clip((rfunc(&src[j + 3]) + dither[3]) >> shift)); \
00545 wfunc(&dst[j + 4], clip((rfunc(&src[j + 4]) + dither[4]) >> shift)); \
00546 wfunc(&dst[j + 5], clip((rfunc(&src[j + 5]) + dither[5]) >> shift)); \
00547 wfunc(&dst[j + 6], clip((rfunc(&src[j + 6]) + dither[6]) >> shift)); \
00548 wfunc(&dst[j + 7], clip((rfunc(&src[j + 7]) + dither[7]) >> shift)); \
00549 } \
00550 for (; j < length; j++) \
00551 wfunc(&dst[j], (rfunc(&src[j]) + dither[j & 7]) >> shift); \
00552 dst += dstStride; \
00553 src += srcStride; \
00554 }
00555
00556 static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],
00557 int srcStride[], int srcSliceY, int srcSliceH,
00558 uint8_t *dst[], int dstStride[])
00559 {
00560 int plane, i, j;
00561 for (plane = 0; plane < 4; plane++) {
00562 int length = (plane == 0 || plane == 3) ? c->srcW : -((-c->srcW ) >> c->chrDstHSubSample);
00563 int y = (plane == 0 || plane == 3) ? srcSliceY: -((-srcSliceY) >> c->chrDstVSubSample);
00564 int height = (plane == 0 || plane == 3) ? srcSliceH: -((-srcSliceH) >> c->chrDstVSubSample);
00565 const uint8_t *srcPtr = src[plane];
00566 uint8_t *dstPtr = dst[plane] + dstStride[plane] * y;
00567
00568 if (!dst[plane])
00569 continue;
00570
00571 if (plane == 1 && !dst[2]) continue;
00572 if (!src[plane] || (plane == 1 && !src[2])) {
00573 if (is16BPS(c->dstFormat))
00574 length *= 2;
00575 fillPlane(dst[plane], dstStride[plane], length, height, y,
00576 (plane == 3) ? 255 : 128);
00577 } else {
00578 if (is9_OR_10BPS(c->srcFormat)) {
00579 const int src_depth = av_pix_fmt_descriptors[c->srcFormat].comp[plane].depth_minus1 + 1;
00580 const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1 + 1;
00581 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
00582
00583 if (is16BPS(c->dstFormat)) {
00584 uint16_t *dstPtr2 = (uint16_t *) dstPtr;
00585 #define COPY9_OR_10TO16(rfunc, wfunc) \
00586 for (i = 0; i < height; i++) { \
00587 for (j = 0; j < length; j++) { \
00588 int srcpx = rfunc(&srcPtr2[j]); \
00589 wfunc(&dstPtr2[j], (srcpx << (16 - src_depth)) | (srcpx >> (2 * src_depth - 16))); \
00590 } \
00591 dstPtr2 += dstStride[plane] / 2; \
00592 srcPtr2 += srcStride[plane] / 2; \
00593 }
00594 if (isBE(c->dstFormat)) {
00595 if (isBE(c->srcFormat)) {
00596 COPY9_OR_10TO16(AV_RB16, AV_WB16);
00597 } else {
00598 COPY9_OR_10TO16(AV_RL16, AV_WB16);
00599 }
00600 } else {
00601 if (isBE(c->srcFormat)) {
00602 COPY9_OR_10TO16(AV_RB16, AV_WL16);
00603 } else {
00604 COPY9_OR_10TO16(AV_RL16, AV_WL16);
00605 }
00606 }
00607 } else if (is9_OR_10BPS(c->dstFormat)) {
00608 uint16_t *dstPtr2 = (uint16_t *) dstPtr;
00609 #define COPY9_OR_10TO9_OR_10(loop) \
00610 for (i = 0; i < height; i++) { \
00611 for (j = 0; j < length; j++) { \
00612 loop; \
00613 } \
00614 dstPtr2 += dstStride[plane] / 2; \
00615 srcPtr2 += srcStride[plane] / 2; \
00616 }
00617 #define COPY9_OR_10TO9_OR_10_2(rfunc, wfunc) \
00618 if (dst_depth > src_depth) { \
00619 COPY9_OR_10TO9_OR_10(int srcpx = rfunc(&srcPtr2[j]); \
00620 wfunc(&dstPtr2[j], (srcpx << 1) | (srcpx >> 9))); \
00621 } else if (dst_depth < src_depth) { \
00622 DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
00623 srcPtr2, srcStride[plane] / 2, rfunc, \
00624 dither_8x8_1, 1, clip9); \
00625 } else { \
00626 COPY9_OR_10TO9_OR_10(wfunc(&dstPtr2[j], rfunc(&srcPtr2[j]))); \
00627 }
00628 if (isBE(c->dstFormat)) {
00629 if (isBE(c->srcFormat)) {
00630 COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WB16);
00631 } else {
00632 COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WB16);
00633 }
00634 } else {
00635 if (isBE(c->srcFormat)) {
00636 COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WL16);
00637 } else {
00638 COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WL16);
00639 }
00640 }
00641 } else {
00642 #define W8(a, b) { *(a) = (b); }
00643 #define COPY9_OR_10TO8(rfunc) \
00644 if (src_depth == 9) { \
00645 DITHER_COPY(dstPtr, dstStride[plane], W8, \
00646 srcPtr2, srcStride[plane] / 2, rfunc, \
00647 dither_8x8_1, 1, av_clip_uint8); \
00648 } else { \
00649 DITHER_COPY(dstPtr, dstStride[plane], W8, \
00650 srcPtr2, srcStride[plane] / 2, rfunc, \
00651 dither_8x8_3, 2, av_clip_uint8); \
00652 }
00653 if (isBE(c->srcFormat)) {
00654 COPY9_OR_10TO8(AV_RB16);
00655 } else {
00656 COPY9_OR_10TO8(AV_RL16);
00657 }
00658 }
00659 } else if (is9_OR_10BPS(c->dstFormat)) {
00660 const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1 + 1;
00661 uint16_t *dstPtr2 = (uint16_t *) dstPtr;
00662
00663 if (is16BPS(c->srcFormat)) {
00664 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
00665 #define COPY16TO9_OR_10(rfunc, wfunc) \
00666 if (dst_depth == 9) { \
00667 DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
00668 srcPtr2, srcStride[plane] / 2, rfunc, \
00669 dither_8x8_128, 7, clip9); \
00670 } else { \
00671 DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
00672 srcPtr2, srcStride[plane] / 2, rfunc, \
00673 dither_8x8_64, 6, clip10); \
00674 }
00675 if (isBE(c->dstFormat)) {
00676 if (isBE(c->srcFormat)) {
00677 COPY16TO9_OR_10(AV_RB16, AV_WB16);
00678 } else {
00679 COPY16TO9_OR_10(AV_RL16, AV_WB16);
00680 }
00681 } else {
00682 if (isBE(c->srcFormat)) {
00683 COPY16TO9_OR_10(AV_RB16, AV_WL16);
00684 } else {
00685 COPY16TO9_OR_10(AV_RL16, AV_WL16);
00686 }
00687 }
00688 } else {
00689 #define COPY8TO9_OR_10(wfunc) \
00690 for (i = 0; i < height; i++) { \
00691 for (j = 0; j < length; j++) { \
00692 const int srcpx = srcPtr[j]; \
00693 wfunc(&dstPtr2[j], (srcpx << (dst_depth - 8)) | (srcpx >> (16 - dst_depth))); \
00694 } \
00695 dstPtr2 += dstStride[plane] / 2; \
00696 srcPtr += srcStride[plane]; \
00697 }
00698 if (isBE(c->dstFormat)) {
00699 COPY8TO9_OR_10(AV_WB16);
00700 } else {
00701 COPY8TO9_OR_10(AV_WL16);
00702 }
00703 }
00704 } else if (is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {
00705 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
00706 #define COPY16TO8(rfunc) \
00707 DITHER_COPY(dstPtr, dstStride[plane], W8, \
00708 srcPtr2, srcStride[plane] / 2, rfunc, \
00709 dither_8x8_256, 8, av_clip_uint8);
00710 if (isBE(c->srcFormat)) {
00711 COPY16TO8(AV_RB16);
00712 } else {
00713 COPY16TO8(AV_RL16);
00714 }
00715 } else if (!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {
00716 for (i = 0; i < height; i++) {
00717 for (j = 0; j < length; j++) {
00718 dstPtr[ j << 1 ] = srcPtr[j];
00719 dstPtr[(j << 1) + 1] = srcPtr[j];
00720 }
00721 srcPtr += srcStride[plane];
00722 dstPtr += dstStride[plane];
00723 }
00724 } else if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat) &&
00725 isBE(c->srcFormat) != isBE(c->dstFormat)) {
00726
00727 for (i = 0; i < height; i++) {
00728 for (j = 0; j < length; j++)
00729 ((uint16_t *) dstPtr)[j] = av_bswap16(((const uint16_t *) srcPtr)[j]);
00730 srcPtr += srcStride[plane];
00731 dstPtr += dstStride[plane];
00732 }
00733 } else if (dstStride[plane] == srcStride[plane] &&
00734 srcStride[plane] > 0 && srcStride[plane] == length) {
00735 memcpy(dst[plane] + dstStride[plane] * y, src[plane],
00736 height * dstStride[plane]);
00737 } else {
00738 if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
00739 length *= 2;
00740 else if (!av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1)
00741 length >>= 3;
00742 for (i = 0; i < height; i++) {
00743 memcpy(dstPtr, srcPtr, length);
00744 srcPtr += srcStride[plane];
00745 dstPtr += dstStride[plane];
00746 }
00747 }
00748 }
00749 }
00750 return srcSliceH;
00751 }
00752
00753
00754 #define IS_DIFFERENT_ENDIANESS(src_fmt, dst_fmt, pix_fmt) \
00755 ((src_fmt == pix_fmt ## BE && dst_fmt == pix_fmt ## LE) || \
00756 (src_fmt == pix_fmt ## LE && dst_fmt == pix_fmt ## BE))
00757
00758
00759 void ff_get_unscaled_swscale(SwsContext *c)
00760 {
00761 const enum PixelFormat srcFormat = c->srcFormat;
00762 const enum PixelFormat dstFormat = c->dstFormat;
00763 const int flags = c->flags;
00764 const int dstH = c->dstH;
00765 int needsDither;
00766
00767 needsDither = isAnyRGB(dstFormat) &&
00768 c->dstFormatBpp < 24 &&
00769 (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
00770
00771
00772 if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) &&
00773 (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {
00774 c->swScale = planarToNv12Wrapper;
00775 }
00776
00777 if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUV422P ||
00778 srcFormat == PIX_FMT_YUVA420P) && isAnyRGB(dstFormat) &&
00779 !(flags & SWS_ACCURATE_RND) && !(dstH & 1)) {
00780 c->swScale = ff_yuv2rgb_get_func_ptr(c);
00781 }
00782
00783 if (srcFormat == PIX_FMT_YUV410P &&
00784 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
00785 !(flags & SWS_BITEXACT)) {
00786 c->swScale = yvu9ToYv12Wrapper;
00787 }
00788
00789
00790 if (srcFormat == PIX_FMT_BGR24 &&
00791 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
00792 !(flags & SWS_ACCURATE_RND))
00793 c->swScale = bgr24ToYv12Wrapper;
00794
00795
00796 if (isAnyRGB(srcFormat) && isAnyRGB(dstFormat) && findRgbConvFn(c)
00797 && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
00798 c->swScale= rgbToRgbWrapper;
00799
00800
00801 if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR444) ||
00802 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR48) ||
00803 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR555) ||
00804 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR565) ||
00805 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_GRAY16) ||
00806 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB444) ||
00807 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB48) ||
00808 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB555) ||
00809 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB565))
00810 c->swScale = packed_16bpc_bswap;
00811
00812 if ((usePal(srcFormat) && (
00813 dstFormat == PIX_FMT_RGB32 ||
00814 dstFormat == PIX_FMT_RGB32_1 ||
00815 dstFormat == PIX_FMT_RGB24 ||
00816 dstFormat == PIX_FMT_BGR32 ||
00817 dstFormat == PIX_FMT_BGR32_1 ||
00818 dstFormat == PIX_FMT_BGR24)))
00819 c->swScale = palToRgbWrapper;
00820
00821 if (srcFormat == PIX_FMT_YUV422P) {
00822 if (dstFormat == PIX_FMT_YUYV422)
00823 c->swScale = yuv422pToYuy2Wrapper;
00824 else if (dstFormat == PIX_FMT_UYVY422)
00825 c->swScale = yuv422pToUyvyWrapper;
00826 }
00827
00828
00829 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
00830
00831 if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {
00832 if (dstFormat == PIX_FMT_YUYV422)
00833 c->swScale = planarToYuy2Wrapper;
00834 else if (dstFormat == PIX_FMT_UYVY422)
00835 c->swScale = planarToUyvyWrapper;
00836 }
00837 }
00838 if (srcFormat == PIX_FMT_YUYV422 &&
00839 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
00840 c->swScale = yuyvToYuv420Wrapper;
00841 if (srcFormat == PIX_FMT_UYVY422 &&
00842 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
00843 c->swScale = uyvyToYuv420Wrapper;
00844 if (srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)
00845 c->swScale = yuyvToYuv422Wrapper;
00846 if (srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)
00847 c->swScale = uyvyToYuv422Wrapper;
00848
00849
00850 if ( srcFormat == dstFormat ||
00851 (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P) ||
00852 (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P) ||
00853 (isPlanarYUV(srcFormat) && isGray(dstFormat)) ||
00854 (isPlanarYUV(dstFormat) && isGray(srcFormat)) ||
00855 (isGray(dstFormat) && isGray(srcFormat)) ||
00856 (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&
00857 c->chrDstHSubSample == c->chrSrcHSubSample &&
00858 c->chrDstVSubSample == c->chrSrcVSubSample &&
00859 dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21 &&
00860 srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))
00861 {
00862 if (isPacked(c->srcFormat))
00863 c->swScale = packedCopyWrapper;
00864 else
00865 c->swScale = planarCopyWrapper;
00866 }
00867
00868 if (ARCH_BFIN)
00869 ff_bfin_get_unscaled_swscale(c);
00870 if (HAVE_ALTIVEC)
00871 ff_swscale_get_unscaled_altivec(c);
00872 }
00873
00874 static void reset_ptr(const uint8_t *src[], int format)
00875 {
00876 if (!isALPHA(format))
00877 src[3] = NULL;
00878 if (!isPlanar(format)) {
00879 src[3] = src[2] = NULL;
00880
00881 if (!usePal(format))
00882 src[1] = NULL;
00883 }
00884 }
00885
00886 static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt,
00887 const int linesizes[4])
00888 {
00889 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
00890 int i;
00891
00892 for (i = 0; i < 4; i++) {
00893 int plane = desc->comp[i].plane;
00894 if (!data[plane] || !linesizes[plane])
00895 return 0;
00896 }
00897
00898 return 1;
00899 }
00900
00905 int attribute_align_arg sws_scale(struct SwsContext *c,
00906 const uint8_t * const srcSlice[],
00907 const int srcStride[], int srcSliceY,
00908 int srcSliceH, uint8_t *const dst[],
00909 const int dstStride[])
00910 {
00911 int i;
00912 const uint8_t *src2[4] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
00913 uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
00914
00915
00916 if (srcSliceH == 0)
00917 return 0;
00918
00919 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
00920 av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
00921 return 0;
00922 }
00923 if (!check_image_pointers(dst, c->dstFormat, dstStride)) {
00924 av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
00925 return 0;
00926 }
00927
00928 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
00929 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
00930 return 0;
00931 }
00932 if (c->sliceDir == 0) {
00933 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
00934 }
00935
00936 if (usePal(c->srcFormat)) {
00937 for (i = 0; i < 256; i++) {
00938 int p, r, g, b, y, u, v;
00939 if (c->srcFormat == PIX_FMT_PAL8) {
00940 p = ((const uint32_t *)(srcSlice[1]))[i];
00941 r = (p >> 16) & 0xFF;
00942 g = (p >> 8) & 0xFF;
00943 b = p & 0xFF;
00944 } else if (c->srcFormat == PIX_FMT_RGB8) {
00945 r = ( i >> 5 ) * 36;
00946 g = ((i >> 2) & 7) * 36;
00947 b = ( i & 3) * 85;
00948 } else if (c->srcFormat == PIX_FMT_BGR8) {
00949 b = ( i >> 6 ) * 85;
00950 g = ((i >> 3) & 7) * 36;
00951 r = ( i & 7) * 36;
00952 } else if (c->srcFormat == PIX_FMT_RGB4_BYTE) {
00953 r = ( i >> 3 ) * 255;
00954 g = ((i >> 1) & 3) * 85;
00955 b = ( i & 1) * 255;
00956 } else if (c->srcFormat == PIX_FMT_GRAY8 ||
00957 c->srcFormat == PIX_FMT_Y400A) {
00958 r = g = b = i;
00959 } else {
00960 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);
00961 b = ( i >> 3 ) * 255;
00962 g = ((i >> 1) & 3) * 85;
00963 r = ( i & 1) * 255;
00964 }
00965 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
00966 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
00967 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
00968 c->pal_yuv[i] = y + (u << 8) + (v << 16);
00969
00970 switch (c->dstFormat) {
00971 case PIX_FMT_BGR32:
00972 #if !HAVE_BIGENDIAN
00973 case PIX_FMT_RGB24:
00974 #endif
00975 c->pal_rgb[i] = r + (g << 8) + (b << 16);
00976 break;
00977 case PIX_FMT_BGR32_1:
00978 #if HAVE_BIGENDIAN
00979 case PIX_FMT_BGR24:
00980 #endif
00981 c->pal_rgb[i] = (r + (g << 8) + (b << 16)) << 8;
00982 break;
00983 case PIX_FMT_RGB32_1:
00984 #if HAVE_BIGENDIAN
00985 case PIX_FMT_RGB24:
00986 #endif
00987 c->pal_rgb[i] = (b + (g << 8) + (r << 16)) << 8;
00988 break;
00989 case PIX_FMT_RGB32:
00990 #if !HAVE_BIGENDIAN
00991 case PIX_FMT_BGR24:
00992 #endif
00993 default:
00994 c->pal_rgb[i] = b + (g << 8) + (r << 16);
00995 }
00996 }
00997 }
00998
00999
01000 if (c->sliceDir == 1) {
01001
01002 int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
01003 srcStride[3] };
01004 int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
01005 dstStride[3] };
01006
01007 reset_ptr(src2, c->srcFormat);
01008 reset_ptr((const uint8_t **) dst2, c->dstFormat);
01009
01010
01011 if (srcSliceY + srcSliceH == c->srcH)
01012 c->sliceDir = 0;
01013
01014 return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
01015 dstStride2);
01016 } else {
01017
01018 int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
01019 -srcStride[3] };
01020 int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
01021 -dstStride[3] };
01022
01023 src2[0] += (srcSliceH - 1) * srcStride[0];
01024 if (!usePal(c->srcFormat))
01025 src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
01026 src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
01027 src2[3] += (srcSliceH - 1) * srcStride[3];
01028 dst2[0] += ( c->dstH - 1) * dstStride[0];
01029 dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
01030 dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
01031 dst2[3] += ( c->dstH - 1) * dstStride[3];
01032
01033 reset_ptr(src2, c->srcFormat);
01034 reset_ptr((const uint8_t **) dst2, c->dstFormat);
01035
01036
01037 if (!srcSliceY)
01038 c->sliceDir = 0;
01039
01040 return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
01041 srcSliceH, dst2, dstStride2);
01042 }
01043 }
01044
01045
01046 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,
01047 int num_pixels, const uint8_t *palette)
01048 {
01049 int i;
01050
01051 for (i = 0; i < num_pixels; i++)
01052 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
01053 }
01054
01055
01056 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst,
01057 int num_pixels, const uint8_t *palette)
01058 {
01059 int i;
01060
01061 for (i = 0; i < num_pixels; i++) {
01062
01063 dst[0] = palette[src[i] * 4 + 0];
01064 dst[1] = palette[src[i] * 4 + 1];
01065 dst[2] = palette[src[i] * 4 + 2];
01066 dst += 3;
01067 }
01068 }