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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 #define RGB2YUV_SHIFT 15
00038 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00039 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00040 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00041 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00042 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00043 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00044 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00045 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00046 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
00047
00048 static void fillPlane(uint8_t *plane, int stride, int width, int height, int y,
00049 uint8_t val)
00050 {
00051 int i;
00052 uint8_t *ptr = plane + stride * y;
00053 for (i = 0; i < height; i++) {
00054 memset(ptr, val, width);
00055 ptr += stride;
00056 }
00057 }
00058
00059 static void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
00060 int alpha, int bits)
00061 {
00062 int i, j;
00063 uint8_t *ptr = plane + stride * y;
00064 int v = alpha ? -1 : (1<<bits);
00065 for (i = 0; i < height; i++) {
00066 for (j = 0; j < width; j++) {
00067 AV_WN16(ptr+2*j, v);
00068 }
00069 ptr += stride;
00070 }
00071 }
00072
00073 static void copyPlane(const uint8_t *src, int srcStride,
00074 int srcSliceY, int srcSliceH, int width,
00075 uint8_t *dst, int dstStride)
00076 {
00077 dst += dstStride * srcSliceY;
00078 if (dstStride == srcStride && srcStride > 0) {
00079 memcpy(dst, src, srcSliceH * dstStride);
00080 } else {
00081 int i;
00082 for (i = 0; i < srcSliceH; i++) {
00083 memcpy(dst, src, width);
00084 src += srcStride;
00085 dst += dstStride;
00086 }
00087 }
00088 }
00089
00090 static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],
00091 int srcStride[], int srcSliceY,
00092 int srcSliceH, uint8_t *dstParam[],
00093 int dstStride[])
00094 {
00095 uint8_t *dst = dstParam[1] + dstStride[1] * srcSliceY / 2;
00096
00097 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
00098 dstParam[0], dstStride[0]);
00099
00100 if (c->dstFormat == PIX_FMT_NV12)
00101 interleaveBytes(src[1], src[2], dst, c->srcW / 2, srcSliceH / 2,
00102 srcStride[1], srcStride[2], dstStride[0]);
00103 else
00104 interleaveBytes(src[2], src[1], dst, c->srcW / 2, srcSliceH / 2,
00105 srcStride[2], srcStride[1], dstStride[0]);
00106
00107 return srcSliceH;
00108 }
00109
00110 static int planarToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
00111 int srcStride[], int srcSliceY, int srcSliceH,
00112 uint8_t *dstParam[], int dstStride[])
00113 {
00114 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
00115
00116 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
00117 srcStride[1], dstStride[0]);
00118
00119 return srcSliceH;
00120 }
00121
00122 static int planarToUyvyWrapper(SwsContext *c, const uint8_t *src[],
00123 int srcStride[], int srcSliceY, int srcSliceH,
00124 uint8_t *dstParam[], int dstStride[])
00125 {
00126 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
00127
00128 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
00129 srcStride[1], dstStride[0]);
00130
00131 return srcSliceH;
00132 }
00133
00134 static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
00135 int srcStride[], int srcSliceY, int srcSliceH,
00136 uint8_t *dstParam[], int dstStride[])
00137 {
00138 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
00139
00140 yuv422ptoyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
00141 srcStride[1], dstStride[0]);
00142
00143 return srcSliceH;
00144 }
00145
00146 static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t *src[],
00147 int srcStride[], int srcSliceY, int srcSliceH,
00148 uint8_t *dstParam[], int dstStride[])
00149 {
00150 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
00151
00152 yuv422ptouyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
00153 srcStride[1], dstStride[0]);
00154
00155 return srcSliceH;
00156 }
00157
00158 static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
00159 int srcStride[], int srcSliceY, int srcSliceH,
00160 uint8_t *dstParam[], int dstStride[])
00161 {
00162 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
00163 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
00164 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
00165
00166 yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
00167 dstStride[1], srcStride[0]);
00168
00169 if (dstParam[3])
00170 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
00171
00172 return srcSliceH;
00173 }
00174
00175 static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
00176 int srcStride[], int srcSliceY, int srcSliceH,
00177 uint8_t *dstParam[], int dstStride[])
00178 {
00179 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
00180 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
00181 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
00182
00183 yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
00184 dstStride[1], srcStride[0]);
00185
00186 return srcSliceH;
00187 }
00188
00189 static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
00190 int srcStride[], int srcSliceY, int srcSliceH,
00191 uint8_t *dstParam[], int dstStride[])
00192 {
00193 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
00194 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
00195 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
00196
00197 uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
00198 dstStride[1], srcStride[0]);
00199
00200 if (dstParam[3])
00201 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
00202
00203 return srcSliceH;
00204 }
00205
00206 static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
00207 int srcStride[], int srcSliceY, int srcSliceH,
00208 uint8_t *dstParam[], int dstStride[])
00209 {
00210 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
00211 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
00212 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
00213
00214 uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
00215 dstStride[1], srcStride[0]);
00216
00217 return srcSliceH;
00218 }
00219
00220 static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels,
00221 const uint8_t *palette)
00222 {
00223 int i;
00224 for (i = 0; i < num_pixels; i++)
00225 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | (src[(i << 1) + 1] << 24);
00226 }
00227
00228 static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels,
00229 const uint8_t *palette)
00230 {
00231 int i;
00232
00233 for (i = 0; i < num_pixels; i++)
00234 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | src[(i << 1) + 1];
00235 }
00236
00237 static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels,
00238 const uint8_t *palette)
00239 {
00240 int i;
00241
00242 for (i = 0; i < num_pixels; i++) {
00243
00244 dst[0] = palette[src[i << 1] * 4 + 0];
00245 dst[1] = palette[src[i << 1] * 4 + 1];
00246 dst[2] = palette[src[i << 1] * 4 + 2];
00247 dst += 3;
00248 }
00249 }
00250
00251 static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
00252 int srcStride[], int srcSliceY, int srcSliceH,
00253 uint8_t *dst[], int dstStride[])
00254 {
00255 int i, j;
00256 int srcstr = srcStride[0] >> 1;
00257 int dststr = dstStride[0] >> 1;
00258 uint16_t *dstPtr = (uint16_t *) dst[0];
00259 const uint16_t *srcPtr = (const uint16_t *) src[0];
00260 int min_stride = FFMIN(srcstr, dststr);
00261
00262 for (i = 0; i < srcSliceH; i++) {
00263 for (j = 0; j < min_stride; j++) {
00264 dstPtr[j] = av_bswap16(srcPtr[j]);
00265 }
00266 srcPtr += srcstr;
00267 dstPtr += dststr;
00268 }
00269
00270 return srcSliceH;
00271 }
00272
00273 static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
00274 int srcSliceY, int srcSliceH, uint8_t *dst[],
00275 int dstStride[])
00276 {
00277 const enum PixelFormat srcFormat = c->srcFormat;
00278 const enum PixelFormat dstFormat = c->dstFormat;
00279 void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels,
00280 const uint8_t *palette) = NULL;
00281 int i;
00282 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
00283 const uint8_t *srcPtr = src[0];
00284
00285 if (srcFormat == PIX_FMT_GRAY8A) {
00286 switch (dstFormat) {
00287 case PIX_FMT_RGB32 : conv = gray8aToPacked32; break;
00288 case PIX_FMT_BGR32 : conv = gray8aToPacked32; break;
00289 case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
00290 case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
00291 case PIX_FMT_RGB24 : conv = gray8aToPacked24; break;
00292 case PIX_FMT_BGR24 : conv = gray8aToPacked24; break;
00293 }
00294 } else if (usePal(srcFormat)) {
00295 switch (dstFormat) {
00296 case PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
00297 case PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
00298 case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
00299 case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
00300 case PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break;
00301 case PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break;
00302 }
00303 }
00304
00305 if (!conv)
00306 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
00307 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
00308 else {
00309 for (i = 0; i < srcSliceH; i++) {
00310 conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
00311 srcPtr += srcStride[0];
00312 dstPtr += dstStride[0];
00313 }
00314 }
00315
00316 return srcSliceH;
00317 }
00318
00319 static void gbr24ptopacked24(const uint8_t* src[], int srcStride[], uint8_t* dst, int dstStride, int srcSliceH, int width)
00320 {
00321 int x, h, i;
00322 for (h = 0; h < srcSliceH; h++) {
00323 uint8_t *dest = dst + dstStride * h;
00324 for (x = 0; x < width; x++) {
00325 *dest++ = src[0][x];
00326 *dest++ = src[1][x];
00327 *dest++ = src[2][x];
00328 }
00329
00330 for (i = 0; i < 3; i++)
00331 src[i] += srcStride[i];
00332 }
00333 }
00334
00335 static void gbr24ptopacked32(const uint8_t* src[], int srcStride[], uint8_t* dst, int dstStride, int srcSliceH, int alpha_first, int width)
00336 {
00337 int x, h, i;
00338 for (h = 0; h < srcSliceH; h++) {
00339 uint8_t *dest = dst + dstStride * h;
00340
00341 if (alpha_first) {
00342 for (x = 0; x < width; x++) {
00343 *dest++ = 0xff;
00344 *dest++ = src[0][x];
00345 *dest++ = src[1][x];
00346 *dest++ = src[2][x];
00347 }
00348 } else {
00349 for (x = 0; x < width; x++) {
00350 *dest++ = src[0][x];
00351 *dest++ = src[1][x];
00352 *dest++ = src[2][x];
00353 *dest++ = 0xff;
00354 }
00355 }
00356
00357 for (i = 0; i < 3; i++)
00358 src[i] += srcStride[i];
00359 }
00360 }
00361
00362 static int planarRgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
00363 int srcSliceH, uint8_t* dst[], int dstStride[])
00364 {
00365 int alpha_first = 0;
00366 if (c->srcFormat != PIX_FMT_GBR24P) {
00367 av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
00368 av_get_pix_fmt_name(c->srcFormat), av_get_pix_fmt_name(c->dstFormat));
00369 return srcSliceH;
00370 }
00371
00372 switch (c->dstFormat) {
00373 case PIX_FMT_BGR24:
00374 gbr24ptopacked24((const uint8_t* []) {src[1], src[0], src[2]}, (int []) {srcStride[1], srcStride[0], srcStride[2]},
00375 dst[0] + srcSliceY * dstStride[0], dstStride[0], srcSliceH, c->srcW);
00376 break;
00377
00378 case PIX_FMT_RGB24:
00379 gbr24ptopacked24((const uint8_t* []) {src[2], src[0], src[1]}, (int []) {srcStride[2], srcStride[0], srcStride[1]},
00380 dst[0] + srcSliceY * dstStride[0], dstStride[0], srcSliceH, c->srcW);
00381 break;
00382
00383 case PIX_FMT_ARGB:
00384 alpha_first = 1;
00385 case PIX_FMT_RGBA:
00386 gbr24ptopacked32((const uint8_t* []) {src[2], src[0], src[1]}, (int []) {srcStride[2], srcStride[0], srcStride[1]},
00387 dst[0] + srcSliceY * dstStride[0], dstStride[0], srcSliceH, alpha_first, c->srcW);
00388 break;
00389
00390 case PIX_FMT_ABGR:
00391 alpha_first = 1;
00392 case PIX_FMT_BGRA:
00393 gbr24ptopacked32((const uint8_t* []) {src[1], src[0], src[2]}, (int []) {srcStride[1], srcStride[0], srcStride[2]},
00394 dst[0] + srcSliceY * dstStride[0], dstStride[0], srcSliceH, alpha_first, c->srcW);
00395 break;
00396
00397 default:
00398 av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
00399 av_get_pix_fmt_name(c->srcFormat), av_get_pix_fmt_name(c->dstFormat));
00400 }
00401
00402 return srcSliceH;
00403 }
00404
00405 #define isRGBA32(x) ( \
00406 (x) == PIX_FMT_ARGB \
00407 || (x) == PIX_FMT_RGBA \
00408 || (x) == PIX_FMT_BGRA \
00409 || (x) == PIX_FMT_ABGR \
00410 )
00411
00412
00413 typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);
00414 static rgbConvFn findRgbConvFn(SwsContext *c)
00415 {
00416 const enum PixelFormat srcFormat = c->srcFormat;
00417 const enum PixelFormat dstFormat = c->dstFormat;
00418 const int srcId = c->srcFormatBpp;
00419 const int dstId = c->dstFormatBpp;
00420 rgbConvFn conv = NULL;
00421
00422 #define IS_NOT_NE(bpp, fmt) \
00423 (((bpp + 7) >> 3) == 2 && \
00424 (!(av_pix_fmt_descriptors[fmt].flags & PIX_FMT_BE) != !HAVE_BIGENDIAN))
00425
00426
00427 if (IS_NOT_NE(srcId, srcFormat) || IS_NOT_NE(dstId, dstFormat))
00428 return NULL;
00429
00430 #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)
00431
00432 if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
00433 if ( CONV_IS(ABGR, RGBA)
00434 || CONV_IS(ARGB, BGRA)
00435 || CONV_IS(BGRA, ARGB)
00436 || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
00437 else if (CONV_IS(ABGR, ARGB)
00438 || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
00439 else if (CONV_IS(ABGR, BGRA)
00440 || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
00441 else if (CONV_IS(BGRA, RGBA)
00442 || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
00443 else if (CONV_IS(BGRA, ABGR)
00444 || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
00445 } else
00446
00447 if ((isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) ||
00448 (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
00449 switch (srcId | (dstId << 16)) {
00450 case 0x000F000C: conv = rgb12to15; break;
00451 case 0x000F0010: conv = rgb16to15; break;
00452 case 0x000F0018: conv = rgb24to15; break;
00453 case 0x000F0020: conv = rgb32to15; break;
00454 case 0x0010000F: conv = rgb15to16; break;
00455 case 0x00100018: conv = rgb24to16; break;
00456 case 0x00100020: conv = rgb32to16; break;
00457 case 0x0018000F: conv = rgb15to24; break;
00458 case 0x00180010: conv = rgb16to24; break;
00459 case 0x00180020: conv = rgb32to24; break;
00460 case 0x0020000F: conv = rgb15to32; break;
00461 case 0x00200010: conv = rgb16to32; break;
00462 case 0x00200018: conv = rgb24to32; break;
00463 }
00464 } else if ((isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) ||
00465 (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
00466 switch (srcId | (dstId << 16)) {
00467 case 0x000C000C: conv = rgb12tobgr12; break;
00468 case 0x000F000F: conv = rgb15tobgr15; break;
00469 case 0x000F0010: conv = rgb16tobgr15; break;
00470 case 0x000F0018: conv = rgb24tobgr15; break;
00471 case 0x000F0020: conv = rgb32tobgr15; break;
00472 case 0x0010000F: conv = rgb15tobgr16; break;
00473 case 0x00100010: conv = rgb16tobgr16; break;
00474 case 0x00100018: conv = rgb24tobgr16; break;
00475 case 0x00100020: conv = rgb32tobgr16; break;
00476 case 0x0018000F: conv = rgb15tobgr24; break;
00477 case 0x00180010: conv = rgb16tobgr24; break;
00478 case 0x00180018: conv = rgb24tobgr24; break;
00479 case 0x00180020: conv = rgb32tobgr24; break;
00480 case 0x0020000F: conv = rgb15tobgr32; break;
00481 case 0x00200010: conv = rgb16tobgr32; break;
00482 case 0x00200018: conv = rgb24tobgr32; break;
00483 }
00484 }
00485
00486 return conv;
00487 }
00488
00489
00490 static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
00491 int srcSliceY, int srcSliceH, uint8_t *dst[],
00492 int dstStride[])
00493
00494 {
00495 const enum PixelFormat srcFormat = c->srcFormat;
00496 const enum PixelFormat dstFormat = c->dstFormat;
00497 const int srcBpp = (c->srcFormatBpp + 7) >> 3;
00498 const int dstBpp = (c->dstFormatBpp + 7) >> 3;
00499 rgbConvFn conv = findRgbConvFn(c);
00500
00501 if (!conv) {
00502 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
00503 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
00504 } else {
00505 const uint8_t *srcPtr = src[0];
00506 uint8_t *dstPtr = dst[0];
00507 if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) &&
00508 !isRGBA32(dstFormat))
00509 srcPtr += ALT32_CORR;
00510
00511 if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) &&
00512 !isRGBA32(srcFormat))
00513 dstPtr += ALT32_CORR;
00514
00515 if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&
00516 !(srcStride[0] % srcBpp))
00517 conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,
00518 srcSliceH * srcStride[0]);
00519 else {
00520 int i;
00521 dstPtr += dstStride[0] * srcSliceY;
00522
00523 for (i = 0; i < srcSliceH; i++) {
00524 conv(srcPtr, dstPtr, c->srcW * srcBpp);
00525 srcPtr += srcStride[0];
00526 dstPtr += dstStride[0];
00527 }
00528 }
00529 }
00530 return srcSliceH;
00531 }
00532
00533 static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
00534 int srcStride[], int srcSliceY, int srcSliceH,
00535 uint8_t *dst[], int dstStride[])
00536 {
00537 rgb24toyv12(
00538 src[0],
00539 dst[0] + srcSliceY * dstStride[0],
00540 dst[1] + (srcSliceY >> 1) * dstStride[1],
00541 dst[2] + (srcSliceY >> 1) * dstStride[2],
00542 c->srcW, srcSliceH,
00543 dstStride[0], dstStride[1], srcStride[0]);
00544 if (dst[3])
00545 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
00546 return srcSliceH;
00547 }
00548
00549 static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
00550 int srcStride[], int srcSliceY, int srcSliceH,
00551 uint8_t *dst[], int dstStride[])
00552 {
00553 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
00554 dst[0], dstStride[0]);
00555
00556 planar2x(src[1], dst[1] + dstStride[1] * (srcSliceY >> 1), c->chrSrcW,
00557 srcSliceH >> 2, srcStride[1], dstStride[1]);
00558 planar2x(src[2], dst[2] + dstStride[2] * (srcSliceY >> 1), c->chrSrcW,
00559 srcSliceH >> 2, srcStride[2], dstStride[2]);
00560 if (dst[3])
00561 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
00562 return srcSliceH;
00563 }
00564
00565
00566 static int packedCopyWrapper(SwsContext *c, const uint8_t *src[],
00567 int srcStride[], int srcSliceY, int srcSliceH,
00568 uint8_t *dst[], int dstStride[])
00569 {
00570 if (dstStride[0] == srcStride[0] && srcStride[0] > 0)
00571 memcpy(dst[0] + dstStride[0] * srcSliceY, src[0], srcSliceH * dstStride[0]);
00572 else {
00573 int i;
00574 const uint8_t *srcPtr = src[0];
00575 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
00576 int length = 0;
00577
00578
00579 while (length + c->srcW <= FFABS(dstStride[0]) &&
00580 length + c->srcW <= FFABS(srcStride[0]))
00581 length += c->srcW;
00582 assert(length != 0);
00583
00584 for (i = 0; i < srcSliceH; i++) {
00585 memcpy(dstPtr, srcPtr, length);
00586 srcPtr += srcStride[0];
00587 dstPtr += dstStride[0];
00588 }
00589 }
00590 return srcSliceH;
00591 }
00592
00593 #define DITHER_COPY(dst, dstStride, src, srcStride, bswap, dbswap)\
00594 uint16_t scale= dither_scale[dst_depth-1][src_depth-1];\
00595 int shift= src_depth-dst_depth + dither_scale[src_depth-2][dst_depth-1];\
00596 for (i = 0; i < height; i++) {\
00597 const uint8_t *dither= dithers[src_depth-9][i&7];\
00598 for (j = 0; j < length-7; j+=8){\
00599 dst[j+0] = dbswap((bswap(src[j+0]) + dither[0])*scale>>shift);\
00600 dst[j+1] = dbswap((bswap(src[j+1]) + dither[1])*scale>>shift);\
00601 dst[j+2] = dbswap((bswap(src[j+2]) + dither[2])*scale>>shift);\
00602 dst[j+3] = dbswap((bswap(src[j+3]) + dither[3])*scale>>shift);\
00603 dst[j+4] = dbswap((bswap(src[j+4]) + dither[4])*scale>>shift);\
00604 dst[j+5] = dbswap((bswap(src[j+5]) + dither[5])*scale>>shift);\
00605 dst[j+6] = dbswap((bswap(src[j+6]) + dither[6])*scale>>shift);\
00606 dst[j+7] = dbswap((bswap(src[j+7]) + dither[7])*scale>>shift);\
00607 }\
00608 for (; j < length; j++)\
00609 dst[j] = dbswap((bswap(src[j]) + dither[j&7])*scale>>shift);\
00610 dst += dstStride;\
00611 src += srcStride;\
00612 }
00613
00614 static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],
00615 int srcStride[], int srcSliceY, int srcSliceH,
00616 uint8_t *dst[], int dstStride[])
00617 {
00618 int plane, i, j;
00619 for (plane = 0; plane < 4; plane++) {
00620 int length = (plane == 0 || plane == 3) ? c->srcW : -((-c->srcW ) >> c->chrDstHSubSample);
00621 int y = (plane == 0 || plane == 3) ? srcSliceY: -((-srcSliceY) >> c->chrDstVSubSample);
00622 int height = (plane == 0 || plane == 3) ? srcSliceH: -((-srcSliceH) >> c->chrDstVSubSample);
00623 const uint8_t *srcPtr = src[plane];
00624 uint8_t *dstPtr = dst[plane] + dstStride[plane] * y;
00625 int shiftonly= plane==1 || plane==2 || (!c->srcRange && plane==0);
00626
00627 if (!dst[plane])
00628 continue;
00629
00630 if (plane == 1 && !dst[2]) continue;
00631 if (!src[plane] || (plane == 1 && !src[2])) {
00632 if (is16BPS(c->dstFormat) || isNBPS(c->dstFormat)) {
00633 fillPlane16(dst[plane], dstStride[plane], length, height, y,
00634 plane == 3, av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1);
00635 } else {
00636 fillPlane(dst[plane], dstStride[plane], length, height, y,
00637 (plane == 3) ? 255 : 128);
00638 }
00639 } else {
00640 if(isNBPS(c->srcFormat) || isNBPS(c->dstFormat)
00641 || (is16BPS(c->srcFormat) != is16BPS(c->dstFormat))
00642 ) {
00643 const int src_depth = av_pix_fmt_descriptors[c->srcFormat].comp[plane].depth_minus1 + 1;
00644 const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1 + 1;
00645 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
00646 uint16_t *dstPtr2 = (uint16_t*)dstPtr;
00647
00648 if (dst_depth == 8) {
00649 if(isBE(c->srcFormat) == HAVE_BIGENDIAN){
00650 DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, , )
00651 } else {
00652 DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, av_bswap16, )
00653 }
00654 } else if (src_depth == 8) {
00655 for (i = 0; i < height; i++) {
00656 #define COPY816(w)\
00657 if(shiftonly){\
00658 for (j = 0; j < length; j++)\
00659 w(&dstPtr2[j], srcPtr[j]<<(dst_depth-8));\
00660 }else{\
00661 for (j = 0; j < length; j++)\
00662 w(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) |\
00663 (srcPtr[j]>>(2*8-dst_depth)));\
00664 }
00665 if(isBE(c->dstFormat)){
00666 COPY816(AV_WB16)
00667 } else {
00668 COPY816(AV_WL16)
00669 }
00670 dstPtr2 += dstStride[plane]/2;
00671 srcPtr += srcStride[plane];
00672 }
00673 } else if (src_depth <= dst_depth) {
00674 for (i = 0; i < height; i++) {
00675 #define COPY_UP(r,w) \
00676 if(shiftonly){\
00677 for (j = 0; j < length; j++){ \
00678 unsigned int v= r(&srcPtr2[j]);\
00679 w(&dstPtr2[j], v<<(dst_depth-src_depth));\
00680 }\
00681 }else{\
00682 for (j = 0; j < length; j++){ \
00683 unsigned int v= r(&srcPtr2[j]);\
00684 w(&dstPtr2[j], (v<<(dst_depth-src_depth)) | \
00685 (v>>(2*src_depth-dst_depth)));\
00686 }\
00687 }
00688 if(isBE(c->srcFormat)){
00689 if(isBE(c->dstFormat)){
00690 COPY_UP(AV_RB16, AV_WB16)
00691 } else {
00692 COPY_UP(AV_RB16, AV_WL16)
00693 }
00694 } else {
00695 if(isBE(c->dstFormat)){
00696 COPY_UP(AV_RL16, AV_WB16)
00697 } else {
00698 COPY_UP(AV_RL16, AV_WL16)
00699 }
00700 }
00701 dstPtr2 += dstStride[plane]/2;
00702 srcPtr2 += srcStride[plane]/2;
00703 }
00704 } else {
00705 if(isBE(c->srcFormat) == HAVE_BIGENDIAN){
00706 if(isBE(c->dstFormat) == HAVE_BIGENDIAN){
00707 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , )
00708 } else {
00709 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , av_bswap16)
00710 }
00711 }else{
00712 if(isBE(c->dstFormat) == HAVE_BIGENDIAN){
00713 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, )
00714 } else {
00715 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, av_bswap16)
00716 }
00717 }
00718 }
00719 } else if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat) &&
00720 isBE(c->srcFormat) != isBE(c->dstFormat)) {
00721
00722 for (i = 0; i < height; i++) {
00723 for (j = 0; j < length; j++)
00724 ((uint16_t *) dstPtr)[j] = av_bswap16(((const uint16_t *) srcPtr)[j]);
00725 srcPtr += srcStride[plane];
00726 dstPtr += dstStride[plane];
00727 }
00728 } else if (dstStride[plane] == srcStride[plane] &&
00729 srcStride[plane] > 0 && srcStride[plane] == length) {
00730 memcpy(dst[plane] + dstStride[plane] * y, src[plane],
00731 height * dstStride[plane]);
00732 } else {
00733 if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
00734 length *= 2;
00735 else if (!av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1)
00736 length >>= 3;
00737 for (i = 0; i < height; i++) {
00738 memcpy(dstPtr, srcPtr, length);
00739 srcPtr += srcStride[plane];
00740 dstPtr += dstStride[plane];
00741 }
00742 }
00743 }
00744 }
00745 return srcSliceH;
00746 }
00747
00748
00749 #define IS_DIFFERENT_ENDIANESS(src_fmt, dst_fmt, pix_fmt) \
00750 ((src_fmt == pix_fmt ## BE && dst_fmt == pix_fmt ## LE) || \
00751 (src_fmt == pix_fmt ## LE && dst_fmt == pix_fmt ## BE))
00752
00753
00754 void ff_get_unscaled_swscale(SwsContext *c)
00755 {
00756 const enum PixelFormat srcFormat = c->srcFormat;
00757 const enum PixelFormat dstFormat = c->dstFormat;
00758 const int flags = c->flags;
00759 const int dstH = c->dstH;
00760 int needsDither;
00761
00762 needsDither = isAnyRGB(dstFormat) &&
00763 c->dstFormatBpp < 24 &&
00764 (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
00765
00766
00767 if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) &&
00768 (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {
00769 c->swScale = planarToNv12Wrapper;
00770 }
00771
00772 if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUV422P ||
00773 srcFormat == PIX_FMT_YUVA420P) && isAnyRGB(dstFormat) &&
00774 !(flags & SWS_ACCURATE_RND) && !(dstH & 1)) {
00775 c->swScale = ff_yuv2rgb_get_func_ptr(c);
00776 }
00777
00778 if (srcFormat == PIX_FMT_YUV410P &&
00779 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
00780 !(flags & SWS_BITEXACT)) {
00781 c->swScale = yvu9ToYv12Wrapper;
00782 }
00783
00784
00785 if (srcFormat == PIX_FMT_BGR24 &&
00786 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
00787 !(flags & SWS_ACCURATE_RND))
00788 c->swScale = bgr24ToYv12Wrapper;
00789
00790
00791 if (isAnyRGB(srcFormat) && isAnyRGB(dstFormat) && findRgbConvFn(c)
00792 && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
00793 c->swScale= rgbToRgbWrapper;
00794
00795 #define isByteRGB(f) (\
00796 f == PIX_FMT_RGB32 ||\
00797 f == PIX_FMT_RGB32_1 ||\
00798 f == PIX_FMT_RGB24 ||\
00799 f == PIX_FMT_BGR32 ||\
00800 f == PIX_FMT_BGR32_1 ||\
00801 f == PIX_FMT_BGR24)
00802
00803 if (isAnyRGB(srcFormat) && isPlanar(srcFormat) && isByteRGB(dstFormat))
00804 c->swScale= planarRgbToRgbWrapper;
00805
00806
00807 if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR444) ||
00808 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR48) ||
00809 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR555) ||
00810 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR565) ||
00811 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_GRAY16) ||
00812 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB444) ||
00813 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB48) ||
00814 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB555) ||
00815 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB565))
00816 c->swScale = packed_16bpc_bswap;
00817
00818 if (usePal(srcFormat) && isByteRGB(dstFormat))
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 #define isPlanarGray(x) (isGray(x) && (x) != PIX_FMT_GRAY8A)
00850
00851 if ( srcFormat == dstFormat ||
00852 (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P) ||
00853 (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P) ||
00854 (isPlanarYUV(srcFormat) && isPlanarGray(dstFormat)) ||
00855 (isPlanarYUV(dstFormat) && isPlanarGray(srcFormat)) ||
00856 (isPlanarGray(dstFormat) && isPlanarGray(srcFormat)) ||
00857 (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&
00858 c->chrDstHSubSample == c->chrSrcHSubSample &&
00859 c->chrDstVSubSample == c->chrSrcVSubSample &&
00860 dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21 &&
00861 srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))
00862 {
00863 if (isPacked(c->srcFormat))
00864 c->swScale = packedCopyWrapper;
00865 else
00866 c->swScale = planarCopyWrapper;
00867 }
00868
00869 if (ARCH_BFIN)
00870 ff_bfin_get_unscaled_swscale(c);
00871 if (HAVE_ALTIVEC)
00872 ff_swscale_get_unscaled_altivec(c);
00873 }
00874
00875 static void reset_ptr(const uint8_t *src[], int format)
00876 {
00877 if (!isALPHA(format))
00878 src[3] = NULL;
00879 if (!isPlanar(format)) {
00880 src[3] = src[2] = NULL;
00881
00882 if (!usePal(format))
00883 src[1] = NULL;
00884 }
00885 }
00886
00887 static int check_image_pointers(const uint8_t * const data[4], enum PixelFormat pix_fmt,
00888 const int linesizes[4])
00889 {
00890 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
00891 int i;
00892
00893 for (i = 0; i < 4; i++) {
00894 int plane = desc->comp[i].plane;
00895 if (!data[plane] || !linesizes[plane])
00896 return 0;
00897 }
00898
00899 return 1;
00900 }
00901
00906 int attribute_align_arg sws_scale(struct SwsContext *c,
00907 const uint8_t * const srcSlice[],
00908 const int srcStride[], int srcSliceY,
00909 int srcSliceH, uint8_t *const dst[],
00910 const int dstStride[])
00911 {
00912 int i, ret;
00913 const uint8_t *src2[4] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
00914 uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
00915 uint8_t *rgb0_tmp = NULL;
00916
00917
00918 if (srcSliceH == 0)
00919 return 0;
00920
00921 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
00922 av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
00923 return 0;
00924 }
00925 if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
00926 av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
00927 return 0;
00928 }
00929
00930 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
00931 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
00932 return 0;
00933 }
00934 if (c->sliceDir == 0) {
00935 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
00936 }
00937
00938 if (usePal(c->srcFormat)) {
00939 for (i = 0; i < 256; i++) {
00940 int p, r, g, b, y, u, v, a = 0xff;
00941 if (c->srcFormat == PIX_FMT_PAL8) {
00942 p = ((const uint32_t *)(srcSlice[1]))[i];
00943 a = (p >> 24) & 0xFF;
00944 r = (p >> 16) & 0xFF;
00945 g = (p >> 8) & 0xFF;
00946 b = p & 0xFF;
00947 } else if (c->srcFormat == PIX_FMT_RGB8) {
00948 r = ( i >> 5 ) * 36;
00949 g = ((i >> 2) & 7) * 36;
00950 b = ( i & 3) * 85;
00951 } else if (c->srcFormat == PIX_FMT_BGR8) {
00952 b = ( i >> 6 ) * 85;
00953 g = ((i >> 3) & 7) * 36;
00954 r = ( i & 7) * 36;
00955 } else if (c->srcFormat == PIX_FMT_RGB4_BYTE) {
00956 r = ( i >> 3 ) * 255;
00957 g = ((i >> 1) & 3) * 85;
00958 b = ( i & 1) * 255;
00959 } else if (c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_GRAY8A) {
00960 r = g = b = i;
00961 } else {
00962 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);
00963 b = ( i >> 3 ) * 255;
00964 g = ((i >> 1) & 3) * 85;
00965 r = ( i & 1) * 255;
00966 }
00967 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
00968 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
00969 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
00970 c->pal_yuv[i]= y + (u<<8) + (v<<16) + (a<<24);
00971
00972 switch (c->dstFormat) {
00973 case PIX_FMT_BGR32:
00974 #if !HAVE_BIGENDIAN
00975 case PIX_FMT_RGB24:
00976 #endif
00977 c->pal_rgb[i]= r + (g<<8) + (b<<16) + (a<<24);
00978 break;
00979 case PIX_FMT_BGR32_1:
00980 #if HAVE_BIGENDIAN
00981 case PIX_FMT_BGR24:
00982 #endif
00983 c->pal_rgb[i]= a + (r<<8) + (g<<16) + (b<<24);
00984 break;
00985 case PIX_FMT_RGB32_1:
00986 #if HAVE_BIGENDIAN
00987 case PIX_FMT_RGB24:
00988 #endif
00989 c->pal_rgb[i]= a + (b<<8) + (g<<16) + (r<<24);
00990 break;
00991 case PIX_FMT_RGB32:
00992 #if !HAVE_BIGENDIAN
00993 case PIX_FMT_BGR24:
00994 #endif
00995 default:
00996 c->pal_rgb[i]= b + (g<<8) + (r<<16) + (a<<24);
00997 }
00998 }
00999 }
01000
01001 if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
01002 uint8_t *base;
01003 int x,y;
01004 rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
01005 base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
01006 for (y=0; y<srcSliceH; y++){
01007 memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
01008 for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
01009 base[ srcStride[0]*y + x] = 0xFF;
01010 }
01011 }
01012 src2[0] = base;
01013 }
01014
01015
01016 if (c->sliceDir == 1) {
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 reset_ptr(src2, c->srcFormat);
01024 reset_ptr((void*)dst2, c->dstFormat);
01025
01026
01027 if (srcSliceY + srcSliceH == c->srcH)
01028 c->sliceDir = 0;
01029
01030 ret = c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
01031 dstStride2);
01032 } else {
01033
01034 int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
01035 -srcStride[3] };
01036 int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
01037 -dstStride[3] };
01038
01039 src2[0] += (srcSliceH - 1) * srcStride[0];
01040 if (!usePal(c->srcFormat))
01041 src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
01042 src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
01043 src2[3] += (srcSliceH - 1) * srcStride[3];
01044 dst2[0] += ( c->dstH - 1) * dstStride[0];
01045 dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
01046 dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
01047 dst2[3] += ( c->dstH - 1) * dstStride[3];
01048
01049 reset_ptr(src2, c->srcFormat);
01050 reset_ptr((void*)dst2, c->dstFormat);
01051
01052
01053 if (!srcSliceY)
01054 c->sliceDir = 0;
01055
01056 ret = c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
01057 srcSliceH, dst2, dstStride2);
01058 }
01059
01060 av_free(rgb0_tmp);
01061 return ret;
01062 }
01063
01064
01065 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,
01066 int num_pixels, const uint8_t *palette)
01067 {
01068 int i;
01069
01070 for (i = 0; i < num_pixels; i++)
01071 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
01072 }
01073
01074
01075 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst,
01076 int num_pixels, const uint8_t *palette)
01077 {
01078 int i;
01079
01080 for (i = 0; i < num_pixels; i++) {
01081
01082 dst[0] = palette[src[i] * 4 + 0];
01083 dst[1] = palette[src[i] * 4 + 1];
01084 dst[2] = palette[src[i] * 4 + 2];
01085 dst += 3;
01086 }
01087 }