diff options
| author | Diego Biurrun <diego@biurrun.de> | 2012-04-01 10:34:10 +0200 |
|---|---|---|
| committer | Diego Biurrun <diego@biurrun.de> | 2012-04-13 19:22:00 +0200 |
| commit | ef0ee7f657e66d91162d2b4fad882ece9fbb264e (patch) | |
| tree | fd785cfe63776eebdfa8136b294ba287b0ffcb58 /libswscale/utils.c | |
| parent | 90a43060077dbbca7ef161a584e95cbc7466264d (diff) | |
| download | ffmpeg-ef0ee7f657e66d91162d2b4fad882ece9fbb264e.tar.gz | |
swscale: K&R formatting cosmetics (part II)
Also adjust some comments including wording and typo fixes.
Diffstat (limited to 'libswscale/utils.c')
| -rw-r--r-- | libswscale/utils.c | 1473 |
1 files changed, 818 insertions, 655 deletions
diff --git a/libswscale/utils.c b/libswscale/utils.c index 51dd331117..d8fee588a0 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -18,13 +18,14 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ -#define _SVID_SOURCE //needed for MAP_ANONYMOUS +#include "config.h" + +#define _SVID_SOURCE // needed for MAP_ANONYMOUS +#include <assert.h> #include <inttypes.h> -#include <string.h> #include <math.h> #include <stdio.h> -#include "config.h" -#include <assert.h> +#include <string.h> #if HAVE_SYS_MMAN_H #include <sys/mman.h> #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS) @@ -35,17 +36,18 @@ #define WIN32_LEAN_AND_MEAN #include <windows.h> #endif -#include "swscale.h" -#include "swscale_internal.h" -#include "rgb2rgb.h" -#include "libavutil/intreadwrite.h" -#include "libavutil/x86_cpu.h" -#include "libavutil/cpu.h" + #include "libavutil/avutil.h" #include "libavutil/bswap.h" +#include "libavutil/cpu.h" +#include "libavutil/intreadwrite.h" #include "libavutil/mathematics.h" #include "libavutil/opt.h" #include "libavutil/pixdesc.h" +#include "libavutil/x86_cpu.h" +#include "rgb2rgb.h" +#include "swscale.h" +#include "swscale_internal.h" unsigned swscale_version(void) { @@ -63,101 +65,101 @@ const char *swscale_license(void) return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1; } -#define RET 0xC3 //near return opcode for x86 +#define RET 0xC3 // near return opcode for x86 typedef struct FormatEntry { int is_supported_in, is_supported_out; } FormatEntry; static const FormatEntry format_entries[PIX_FMT_NB] = { - [PIX_FMT_YUV420P] = { 1 , 1 }, - [PIX_FMT_YUYV422] = { 1 , 1 }, - [PIX_FMT_RGB24] = { 1 , 1 }, - [PIX_FMT_BGR24] = { 1 , 1 }, - [PIX_FMT_YUV422P] = { 1 , 1 }, - [PIX_FMT_YUV444P] = { 1 , 1 }, - [PIX_FMT_YUV410P] = { 1 , 1 }, - [PIX_FMT_YUV411P] = { 1 , 1 }, - [PIX_FMT_GRAY8] = { 1 , 1 }, - [PIX_FMT_MONOWHITE] = { 1 , 1 }, - [PIX_FMT_MONOBLACK] = { 1 , 1 }, - [PIX_FMT_PAL8] = { 1 , 0 }, - [PIX_FMT_YUVJ420P] = { 1 , 1 }, - [PIX_FMT_YUVJ422P] = { 1 , 1 }, - [PIX_FMT_YUVJ444P] = { 1 , 1 }, - [PIX_FMT_UYVY422] = { 1 , 1 }, - [PIX_FMT_UYYVYY411] = { 0 , 0 }, - [PIX_FMT_BGR8] = { 1 , 1 }, - [PIX_FMT_BGR4] = { 0 , 1 }, - [PIX_FMT_BGR4_BYTE] = { 1 , 1 }, - [PIX_FMT_RGB8] = { 1 , 1 }, - [PIX_FMT_RGB4] = { 0 , 1 }, - [PIX_FMT_RGB4_BYTE] = { 1 , 1 }, - [PIX_FMT_NV12] = { 1 , 1 }, - [PIX_FMT_NV21] = { 1 , 1 }, - [PIX_FMT_ARGB] = { 1 , 1 }, - [PIX_FMT_RGBA] = { 1 , 1 }, - [PIX_FMT_ABGR] = { 1 , 1 }, - [PIX_FMT_BGRA] = { 1 , 1 }, - [PIX_FMT_GRAY16BE] = { 1 , 1 }, - [PIX_FMT_GRAY16LE] = { 1 , 1 }, - [PIX_FMT_YUV440P] = { 1 , 1 }, - [PIX_FMT_YUVJ440P] = { 1 , 1 }, - [PIX_FMT_YUVA420P] = { 1 , 1 }, - [PIX_FMT_RGB48BE] = { 1 , 1 }, - [PIX_FMT_RGB48LE] = { 1 , 1 }, - [PIX_FMT_RGB565BE] = { 1 , 1 }, - [PIX_FMT_RGB565LE] = { 1 , 1 }, - [PIX_FMT_RGB555BE] = { 1 , 1 }, - [PIX_FMT_RGB555LE] = { 1 , 1 }, - [PIX_FMT_BGR565BE] = { 1 , 1 }, - [PIX_FMT_BGR565LE] = { 1 , 1 }, - [PIX_FMT_BGR555BE] = { 1 , 1 }, - [PIX_FMT_BGR555LE] = { 1 , 1 }, - [PIX_FMT_YUV420P16LE] = { 1 , 1 }, - [PIX_FMT_YUV420P16BE] = { 1 , 1 }, - [PIX_FMT_YUV422P16LE] = { 1 , 1 }, - [PIX_FMT_YUV422P16BE] = { 1 , 1 }, - [PIX_FMT_YUV444P16LE] = { 1 , 1 }, - [PIX_FMT_YUV444P16BE] = { 1 , 1 }, - [PIX_FMT_RGB444LE] = { 1 , 1 }, - [PIX_FMT_RGB444BE] = { 1 , 1 }, - [PIX_FMT_BGR444LE] = { 1 , 1 }, - [PIX_FMT_BGR444BE] = { 1 , 1 }, - [PIX_FMT_Y400A] = { 1 , 0 }, - [PIX_FMT_BGR48BE] = { 1 , 1 }, - [PIX_FMT_BGR48LE] = { 1 , 1 }, - [PIX_FMT_YUV420P9BE] = { 1 , 1 }, - [PIX_FMT_YUV420P9LE] = { 1 , 1 }, - [PIX_FMT_YUV420P10BE] = { 1 , 1 }, - [PIX_FMT_YUV420P10LE] = { 1 , 1 }, - [PIX_FMT_YUV422P9BE] = { 1 , 1 }, - [PIX_FMT_YUV422P9LE] = { 1 , 1 }, - [PIX_FMT_YUV422P10BE] = { 1 , 1 }, - [PIX_FMT_YUV422P10LE] = { 1 , 1 }, - [PIX_FMT_YUV444P9BE] = { 1 , 1 }, - [PIX_FMT_YUV444P9LE] = { 1 , 1 }, - [PIX_FMT_YUV444P10BE] = { 1 , 1 }, - [PIX_FMT_YUV444P10LE] = { 1 , 1 }, - [PIX_FMT_GBRP] = { 1 , 0 }, - [PIX_FMT_GBRP9LE] = { 1 , 0 }, - [PIX_FMT_GBRP9BE] = { 1 , 0 }, - [PIX_FMT_GBRP10LE] = { 1 , 0 }, - [PIX_FMT_GBRP10BE] = { 1 , 0 }, - [PIX_FMT_GBRP16LE] = { 1 , 0 }, - [PIX_FMT_GBRP16BE] = { 1 , 0 }, + [PIX_FMT_YUV420P] = { 1, 1 }, + [PIX_FMT_YUYV422] = { 1, 1 }, + [PIX_FMT_RGB24] = { 1, 1 }, + [PIX_FMT_BGR24] = { 1, 1 }, + [PIX_FMT_YUV422P] = { 1, 1 }, + [PIX_FMT_YUV444P] = { 1, 1 }, + [PIX_FMT_YUV410P] = { 1, 1 }, + [PIX_FMT_YUV411P] = { 1, 1 }, + [PIX_FMT_GRAY8] = { 1, 1 }, + [PIX_FMT_MONOWHITE] = { 1, 1 }, + [PIX_FMT_MONOBLACK] = { 1, 1 }, + [PIX_FMT_PAL8] = { 1, 0 }, + [PIX_FMT_YUVJ420P] = { 1, 1 }, + [PIX_FMT_YUVJ422P] = { 1, 1 }, + [PIX_FMT_YUVJ444P] = { 1, 1 }, + [PIX_FMT_UYVY422] = { 1, 1 }, + [PIX_FMT_UYYVYY411] = { 0, 0 }, + [PIX_FMT_BGR8] = { 1, 1 }, + [PIX_FMT_BGR4] = { 0, 1 }, + [PIX_FMT_BGR4_BYTE] = { 1, 1 }, + [PIX_FMT_RGB8] = { 1, 1 }, + [PIX_FMT_RGB4] = { 0, 1 }, + [PIX_FMT_RGB4_BYTE] = { 1, 1 }, + [PIX_FMT_NV12] = { 1, 1 }, + [PIX_FMT_NV21] = { 1, 1 }, + [PIX_FMT_ARGB] = { 1, 1 }, + [PIX_FMT_RGBA] = { 1, 1 }, + [PIX_FMT_ABGR] = { 1, 1 }, + [PIX_FMT_BGRA] = { 1, 1 }, + [PIX_FMT_GRAY16BE] = { 1, 1 }, + [PIX_FMT_GRAY16LE] = { 1, 1 }, + [PIX_FMT_YUV440P] = { 1, 1 }, + [PIX_FMT_YUVJ440P] = { 1, 1 }, + [PIX_FMT_YUVA420P] = { 1, 1 }, + [PIX_FMT_RGB48BE] = { 1, 1 }, + [PIX_FMT_RGB48LE] = { 1, 1 }, + [PIX_FMT_RGB565BE] = { 1, 1 }, + [PIX_FMT_RGB565LE] = { 1, 1 }, + [PIX_FMT_RGB555BE] = { 1, 1 }, + [PIX_FMT_RGB555LE] = { 1, 1 }, + [PIX_FMT_BGR565BE] = { 1, 1 }, + [PIX_FMT_BGR565LE] = { 1, 1 }, + [PIX_FMT_BGR555BE] = { 1, 1 }, + [PIX_FMT_BGR555LE] = { 1, 1 }, + [PIX_FMT_YUV420P16LE] = { 1, 1 }, + [PIX_FMT_YUV420P16BE] = { 1, 1 }, + [PIX_FMT_YUV422P16LE] = { 1, 1 }, + [PIX_FMT_YUV422P16BE] = { 1, 1 }, + [PIX_FMT_YUV444P16LE] = { 1, 1 }, + [PIX_FMT_YUV444P16BE] = { 1, 1 }, + [PIX_FMT_RGB444LE] = { 1, 1 }, + [PIX_FMT_RGB444BE] = { 1, 1 }, + [PIX_FMT_BGR444LE] = { 1, 1 }, + [PIX_FMT_BGR444BE] = { 1, 1 }, + [PIX_FMT_Y400A] = { 1, 0 }, + [PIX_FMT_BGR48BE] = { 1, 1 }, + [PIX_FMT_BGR48LE] = { 1, 1 }, + [PIX_FMT_YUV420P9BE] = { 1, 1 }, + [PIX_FMT_YUV420P9LE] = { 1, 1 }, + [PIX_FMT_YUV420P10BE] = { 1, 1 }, + [PIX_FMT_YUV420P10LE] = { 1, 1 }, + [PIX_FMT_YUV422P9BE] = { 1, 1 }, + [PIX_FMT_YUV422P9LE] = { 1, 1 }, + [PIX_FMT_YUV422P10BE] = { 1, 1 }, + [PIX_FMT_YUV422P10LE] = { 1, 1 }, + [PIX_FMT_YUV444P9BE] = { 1, 1 }, + [PIX_FMT_YUV444P9LE] = { 1, 1 }, + [PIX_FMT_YUV444P10BE] = { 1, 1 }, + [PIX_FMT_YUV444P10LE] = { 1, 1 }, + [PIX_FMT_GBRP] = { 1, 0 }, + [PIX_FMT_GBRP9LE] = { 1, 0 }, + [PIX_FMT_GBRP9BE] = { 1, 0 }, + [PIX_FMT_GBRP10LE] = { 1, 0 }, + [PIX_FMT_GBRP10BE] = { 1, 0 }, + [PIX_FMT_GBRP16LE] = { 1, 0 }, + [PIX_FMT_GBRP16BE] = { 1, 0 }, }; int sws_isSupportedInput(enum PixelFormat pix_fmt) { return (unsigned)pix_fmt < PIX_FMT_NB ? - format_entries[pix_fmt].is_supported_in : 0; + format_entries[pix_fmt].is_supported_in : 0; } int sws_isSupportedOutput(enum PixelFormat pix_fmt) { return (unsigned)pix_fmt < PIX_FMT_NB ? - format_entries[pix_fmt].is_supported_out : 0; + format_entries[pix_fmt].is_supported_out : 0; } extern const int32_t ff_yuv2rgb_coeffs[8][4]; @@ -170,261 +172,302 @@ const char *sws_format_name(enum PixelFormat format) return "Unknown format"; } -static double getSplineCoeff(double a, double b, double c, double d, double dist) +static double getSplineCoeff(double a, double b, double c, double d, + double dist) { - if (dist<=1.0) return ((d*dist + c)*dist + b)*dist +a; - else return getSplineCoeff( 0.0, - b+ 2.0*c + 3.0*d, - c + 3.0*d, - -b- 3.0*c - 6.0*d, - dist-1.0); + if (dist <= 1.0) + return ((d * dist + c) * dist + b) * dist + a; + else + return getSplineCoeff(0.0, + b + 2.0 * c + 3.0 * d, + c + 3.0 * d, + -b - 3.0 * c - 6.0 * d, + dist - 1.0); } -static int initFilter(int16_t **outFilter, int32_t **filterPos, int *outFilterSize, int xInc, - int srcW, int dstW, int filterAlign, int one, int flags, int cpu_flags, - SwsVector *srcFilter, SwsVector *dstFilter, double param[2], int is_horizontal) +static int initFilter(int16_t **outFilter, int32_t **filterPos, + int *outFilterSize, int xInc, int srcW, int dstW, + int filterAlign, int one, int flags, int cpu_flags, + SwsVector *srcFilter, SwsVector *dstFilter, + double param[2], int is_horizontal) { int i; int filterSize; int filter2Size; int minFilterSize; - int64_t *filter=NULL; - int64_t *filter2=NULL; - const int64_t fone= 1LL<<54; - int ret= -1; + int64_t *filter = NULL; + int64_t *filter2 = NULL; + const int64_t fone = 1LL << 54; + int ret = -1; - emms_c(); //FIXME this should not be required but it IS (even for non-MMX versions) + emms_c(); // FIXME should not be required but IS (even for non-MMX versions) - // NOTE: the +3 is for the MMX(+1)/SSE(+3) scaler which reads over the end - FF_ALLOC_OR_GOTO(NULL, *filterPos, (dstW+3)*sizeof(**filterPos), fail); + // NOTE: the +3 is for the MMX(+1) / SSE(+3) scaler which reads over the end + FF_ALLOC_OR_GOTO(NULL, *filterPos, (dstW + 3) * sizeof(**filterPos), fail); - if (FFABS(xInc - 0x10000) <10) { // unscaled + if (FFABS(xInc - 0x10000) < 10) { // unscaled int i; - filterSize= 1; - FF_ALLOCZ_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail); + filterSize = 1; + FF_ALLOCZ_OR_GOTO(NULL, filter, + dstW * sizeof(*filter) * filterSize, fail); - for (i=0; i<dstW; i++) { - filter[i*filterSize]= fone; - (*filterPos)[i]=i; + for (i = 0; i < dstW; i++) { + filter[i * filterSize] = fone; + (*filterPos)[i] = i; } - - } else if (flags&SWS_POINT) { // lame looking point sampling mode + } else if (flags & SWS_POINT) { // lame looking point sampling mode int i; int xDstInSrc; - filterSize= 1; - FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail); + filterSize = 1; + FF_ALLOC_OR_GOTO(NULL, filter, + dstW * sizeof(*filter) * filterSize, fail); - xDstInSrc= xInc/2 - 0x8000; - for (i=0; i<dstW; i++) { - int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16; + xDstInSrc = xInc / 2 - 0x8000; + for (i = 0; i < dstW; i++) { + int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16; - (*filterPos)[i]= xx; - filter[i]= fone; - xDstInSrc+= xInc; + (*filterPos)[i] = xx; + filter[i] = fone; + xDstInSrc += xInc; } - } else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) { // bilinear upscale + } else if ((xInc <= (1 << 16) && (flags & SWS_AREA)) || + (flags & SWS_FAST_BILINEAR)) { // bilinear upscale int i; int xDstInSrc; - filterSize= 2; - FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail); + filterSize = 2; + FF_ALLOC_OR_GOTO(NULL, filter, + dstW * sizeof(*filter) * filterSize, fail); - xDstInSrc= xInc/2 - 0x8000; - for (i=0; i<dstW; i++) { - int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16; + xDstInSrc = xInc / 2 - 0x8000; + for (i = 0; i < dstW; i++) { + int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16; int j; - (*filterPos)[i]= xx; - //bilinear upscale / linear interpolate / area averaging - for (j=0; j<filterSize; j++) { - int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16); - if (coeff<0) coeff=0; - filter[i*filterSize + j]= coeff; + (*filterPos)[i] = xx; + // bilinear upscale / linear interpolate / area averaging + for (j = 0; j < filterSize; j++) { + int64_t coeff = fone - FFABS((xx << 16) - xDstInSrc) * + (fone >> 16); + if (coeff < 0) + coeff = 0; + filter[i * filterSize + j] = coeff; xx++; } - xDstInSrc+= xInc; + xDstInSrc += xInc; } } else { int64_t xDstInSrc; int sizeFactor; - if (flags&SWS_BICUBIC) sizeFactor= 4; - else if (flags&SWS_X) sizeFactor= 8; - else if (flags&SWS_AREA) sizeFactor= 1; //downscale only, for upscale it is bilinear - else if (flags&SWS_GAUSS) sizeFactor= 8; // infinite ;) - else if (flags&SWS_LANCZOS) sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6; - else if (flags&SWS_SINC) sizeFactor= 20; // infinite ;) - else if (flags&SWS_SPLINE) sizeFactor= 20; // infinite ;) - else if (flags&SWS_BILINEAR) sizeFactor= 2; + if (flags & SWS_BICUBIC) + sizeFactor = 4; + else if (flags & SWS_X) + sizeFactor = 8; + else if (flags & SWS_AREA) + sizeFactor = 1; // downscale only, for upscale it is bilinear + else if (flags & SWS_GAUSS) + sizeFactor = 8; // infinite ;) + else if (flags & SWS_LANCZOS) + sizeFactor = param[0] != SWS_PARAM_DEFAULT ? ceil(2 * param[0]) : 6; + else if (flags & SWS_SINC) + sizeFactor = 20; // infinite ;) + else if (flags & SWS_SPLINE) + sizeFactor = 20; // infinite ;) + else if (flags & SWS_BILINEAR) + sizeFactor = 2; else { - sizeFactor= 0; //GCC warning killer + sizeFactor = 0; // GCC warning killer assert(0); } - if (xInc <= 1<<16) filterSize= 1 + sizeFactor; // upscale - else filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW; + if (xInc <= 1 << 16) + filterSize = 1 + sizeFactor; // upscale + else + filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW; filterSize = FFMIN(filterSize, srcW - 2); filterSize = FFMAX(filterSize, 1); - FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail); + FF_ALLOC_OR_GOTO(NULL, filter, + dstW * sizeof(*filter) * filterSize, fail); - xDstInSrc= xInc - 0x10000; - for (i=0; i<dstW; i++) { - int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17); + xDstInSrc = xInc - 0x10000; + for (i = 0; i < dstW; i++) { + int xx = (xDstInSrc - ((filterSize - 2) << 16)) / (1 << 17); int j; - (*filterPos)[i]= xx; - for (j=0; j<filterSize; j++) { - int64_t d= (FFABS(((int64_t)xx<<17) - xDstInSrc))<<13; + (*filterPos)[i] = xx; + for (j = 0; j < filterSize; j++) { + int64_t d = (FFABS(((int64_t)xx << 17) - xDstInSrc)) << 13; double floatd; int64_t coeff; - if (xInc > 1<<16) - d= d*dstW/srcW; - floatd= d * (1.0/(1<<30)); + if (xInc > 1 << 16) + d = d * dstW / srcW; + floatd = d * (1.0 / (1 << 30)); if (flags & SWS_BICUBIC) { - int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1<<24); - int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24); + int64_t B = (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1 << 24); + int64_t C = (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1 << 24); - if (d >= 1LL<<31) { + if (d >= 1LL << 31) { coeff = 0.0; } else { int64_t dd = (d * d) >> 30; int64_t ddd = (dd * d) >> 30; - if (d < 1LL<<30) - coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30); + if (d < 1LL << 30) + coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd + + (-18 * (1 << 24) + 12 * B + 6 * C) * dd + + (6 * (1 << 24) - 2 * B) * (1 << 30); else - coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30); + coeff = (-B - 6 * C) * ddd + + (6 * B + 30 * C) * dd + + (-12 * B - 48 * C) * d + + (8 * B + 24 * C) * (1 << 30); } - coeff *= fone>>(30+24); + coeff *= fone >> (30 + 24); } -/* else if (flags & SWS_X) { - double p= param ? param*0.01 : 0.3; - coeff = d ? sin(d*M_PI)/(d*M_PI) : 1.0; - coeff*= pow(2.0, - p*d*d); - }*/ +#if 0 + else if (flags & SWS_X) { + double p = param ? param * 0.01 : 0.3; + coeff = d ? sin(d * M_PI) / (d * M_PI) : 1.0; + coeff *= pow(2.0, -p * d * d); + } +#endif else if (flags & SWS_X) { - double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0; + double A = param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0; double c; - if (floatd<1.0) - c = cos(floatd*M_PI); + if (floatd < 1.0) + c = cos(floatd * M_PI); else - c=-1.0; - if (c<0.0) c= -pow(-c, A); - else c= pow( c, A); - coeff= (c*0.5 + 0.5)*fone; + c = -1.0; + if (c < 0.0) + c = -pow(-c, A); + else + c = pow(c, A); + coeff = (c * 0.5 + 0.5) * fone; } else if (flags & SWS_AREA) { - int64_t d2= d - (1<<29); - if (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16)); - else if (d2*xInc < (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16)); - else coeff=0.0; - coeff *= fone>>(30+16); + int64_t d2 = d - (1 << 29); + if (d2 * xInc < -(1LL << (29 + 16))) + coeff = 1.0 * (1LL << (30 + 16)); + else if (d2 * xInc < (1LL << (29 + 16))) + coeff = -d2 * xInc + (1LL << (29 + 16)); + else + coeff = 0.0; + coeff *= fone >> (30 + 16); } else if (flags & SWS_GAUSS) { - double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; - coeff = (pow(2.0, - p*floatd*floatd))*fone; + double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; + coeff = (pow(2.0, -p * floatd * floatd)) * fone; } else if (flags & SWS_SINC) { - coeff = (d ? sin(floatd*M_PI)/(floatd*M_PI) : 1.0)*fone; + coeff = (d ? sin(floatd * M_PI) / (floatd * M_PI) : 1.0) * fone; } else if (flags & SWS_LANCZOS) { - double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; - coeff = (d ? sin(floatd*M_PI)*sin(floatd*M_PI/p)/(floatd*floatd*M_PI*M_PI/p) : 1.0)*fone; - if (floatd>p) coeff=0; + double p = param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; + coeff = (d ? sin(floatd * M_PI) * sin(floatd * M_PI / p) / + (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone; + if (floatd > p) + coeff = 0; } else if (flags & SWS_BILINEAR) { - coeff= (1<<30) - d; - if (coeff<0) coeff=0; + coeff = (1 << 30) - d; + if (coeff < 0) + coeff = 0; coeff *= fone >> 30; } else if (flags & SWS_SPLINE) { - double p=-2.196152422706632; - coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone; + double p = -2.196152422706632; + coeff = getSplineCoeff(1.0, 0.0, p, -p - 1.0, floatd) * fone; } else { - coeff= 0.0; //GCC warning killer + coeff = 0.0; // GCC warning killer assert(0); } - filter[i*filterSize + j]= coeff; + filter[i * filterSize + j] = coeff; xx++; } - xDstInSrc+= 2*xInc; + xDstInSrc += 2 * xInc; } } /* apply src & dst Filter to filter -> filter2 - av_free(filter); - */ - assert(filterSize>0); - filter2Size= filterSize; - if (srcFilter) filter2Size+= srcFilter->length - 1; - if (dstFilter) filter2Size+= dstFilter->length - 1; - assert(filter2Size>0); - FF_ALLOCZ_OR_GOTO(NULL, filter2, filter2Size*dstW*sizeof(*filter2), fail); - - for (i=0; i<dstW; i++) { + * av_free(filter); + */ + assert(filterSize > 0); + filter2Size = filterSize; + if (srcFilter) + filter2Size += srcFilter->length - 1; + if (dstFilter) + filter2Size += dstFilter->length - 1; + assert(filter2Size > 0); + FF_ALLOCZ_OR_GOTO(NULL, filter2, filter2Size * dstW * sizeof(*filter2), fail); + + for (i = 0; i < dstW; i++) { int j, k; - if(srcFilter) { - for (k=0; k<srcFilter->length; k++) { - for (j=0; j<filterSize; j++) - filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j]; + if (srcFilter) { + for (k = 0; k < srcFilter->length; k++) { + for (j = 0; j < filterSize; j++) + filter2[i * filter2Size + k + j] += + srcFilter->coeff[k] * filter[i * filterSize + j]; } } else { - for (j=0; j<filterSize; j++) - filter2[i*filter2Size + j]= filter[i*filterSize + j]; + for (j = 0; j < filterSize; j++) + filter2[i * filter2Size + j] = filter[i * filterSize + j]; } - //FIXME dstFilter + // FIXME dstFilter - (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2; + (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2; } av_freep(&filter); /* try to reduce the filter-size (step1 find size and shift left) */ // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not). - minFilterSize= 0; - for (i=dstW-1; i>=0; i--) { - int min= filter2Size; + minFilterSize = 0; + for (i = dstW - 1; i >= 0; i--) { + int min = filter2Size; int j; - int64_t cutOff=0.0; + int64_t cutOff = 0.0; /* get rid of near zero elements on the left by shifting left */ - for (j=0; j<filter2Size; j++) { + for (j = 0; j < filter2Size; j++) { int k; - cutOff += FFABS(filter2[i*filter2Size]); + cutOff += FFABS(filter2[i * filter2Size]); - if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break; + if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone) + break; - /* preserve monotonicity because the core can't handle the filter otherwise */ - if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break; + /* preserve monotonicity because the core can't handle the + * filter otherwise */ + if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1]) + break; // move filter coefficients left - for (k=1; k<filter2Size; k++) - filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k]; - filter2[i*filter2Size + k - 1]= 0; + for (k = 1; k < filter2Size; k++) + filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k]; + filter2[i * filter2Size + k - 1] = 0; (*filterPos)[i]++; } - cutOff=0; + cutOff = 0; /* count near zeros on the right */ - for (j=filter2Size-1; j>0; j--) { - cutOff += FFABS(filter2[i*filter2Size + j]); + for (j = filter2Size - 1; j > 0; j--) { + cutOff += FFABS(filter2[i * filter2Size + j]); - if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break; + if (cutOff > SWS_MAX_REDUCE_CUTOFF * fone) + break; min--; } - if (min>minFilterSize) minFilterSize= min; + if (min > minFilterSize) + minFilterSize = min; } if (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) { - // we can handle the special case 4, - // so we don't want to go to the full 8 + // we can handle the special case 4, so we don't want to go the full 8 if (minFilterSize < 5) filterAlign = 4; - // We really don't want to waste our time - // doing useless computation, so fall back on - // the scalar C code for very small filters. - // Vectorizing is worth it only if you have a - // decent-sized vector. + /* We really don't want to waste our time doing useless computation, so + * fall back on the scalar C code for very small filters. + * Vectorizing is worth it only if you have a decent-sized vector. */ if (minFilterSize < 3) filterAlign = 1; } @@ -432,34 +475,39 @@ static int initFilter(int16_t **outFilter, int32_t **filterPos, int *outFilterSi if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) { // special case for unscaled vertical filtering if (minFilterSize == 1 && filterAlign == 2) - filterAlign= 1; + filterAlign = 1; } assert(minFilterSize > 0); - filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1)); + filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1)); assert(filterSize > 0); - filter= av_malloc(filterSize*dstW*sizeof(*filter)); - if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter) + filter = av_malloc(filterSize * dstW * sizeof(*filter)); + if (filterSize >= MAX_FILTER_SIZE * 16 / + ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter) goto fail; - *outFilterSize= filterSize; + *outFilterSize = filterSize; - if (flags&SWS_PRINT_INFO) - av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize); + if (flags & SWS_PRINT_INFO) + av_log(NULL, AV_LOG_VERBOSE, + "SwScaler: reducing / aligning filtersize %d -> %d\n", + filter2Size, filterSize); /* try to reduce the filter-size (step2 reduce it) */ - for (i=0; i<dstW; i++) { + for (i = 0; i < dstW; i++) { int j; - for (j=0; j<filterSize; j++) { - if (j>=filter2Size) filter[i*filterSize + j]= 0; - else filter[i*filterSize + j]= filter2[i*filter2Size + j]; - if((flags & SWS_BITEXACT) && j>=minFilterSize) - filter[i*filterSize + j]= 0; + for (j = 0; j < filterSize; j++) { + if (j >= filter2Size) + filter[i * filterSize + j] = 0; + else + filter[i * filterSize + j] = filter2[i * filter2Size + j]; + if ((flags & SWS_BITEXACT) && j >= minFilterSize) + filter[i * filterSize + j] = 0; } } - //FIXME try to align filterPos if possible + // FIXME try to align filterPos if possible - //fix borders + // fix borders if (is_horizontal) { for (i = 0; i < dstW; i++) { int j; @@ -468,7 +516,7 @@ static int initFilter(int16_t **outFilter, int32_t **filterPos, int *outFilterSi for (j = 1; j < filterSize; j++) { int left = FFMAX(j + (*filterPos)[i], 0); filter[i * filterSize + left] += filter[i * filterSize + j]; - filter[i * filterSize + j ] = 0; + filter[i * filterSize + j] = 0; } (*filterPos)[i] = 0; } @@ -479,7 +527,7 @@ static int initFilter(int16_t **outFilter, int32_t **filterPos, int *outFilterSi for (j = filterSize - 2; j >= 0; j--) { int right = FFMIN(j + shift, filterSize - 1); filter[i * filterSize + right] += filter[i * filterSize + j]; - filter[i * filterSize + j ] = 0; + filter[i * filterSize + j] = 0; } (*filterPos)[i] = srcW - filterSize; } @@ -488,37 +536,40 @@ static int initFilter(int16_t **outFilter, int32_t **filterPos, int *outFilterSi // Note the +1 is for the MMX scaler which reads over the end /* align at 16 for AltiVec (needed by hScale_altivec_real) */ - FF_ALLOCZ_OR_GOTO(NULL, *outFilter, *outFilterSize*(dstW+3)*sizeof(int16_t), fail); + FF_ALLOCZ_OR_GOTO(NULL, *outFilter, + *outFilterSize * (dstW + 3) * sizeof(int16_t), fail); /* normalize & store in outFilter */ - for (i=0; i<dstW; i++) { + for (i = 0; i < dstW; i++) { int j; - int64_t error=0; - int64_t sum=0; + int64_t error = 0; + int64_t sum = 0; - for (j=0; j<filterSize; j++) { - sum+= filter[i*filterSize + j]; + for (j = 0; j < filterSize; j++) { + sum += filter[i * filterSize + j]; } - sum= (sum + one/2)/ one; - for (j=0; j<*outFilterSize; j++) { - int64_t v= filter[i*filterSize + j] + error; - int intV= ROUNDED_DIV(v, sum); - (*outFilter)[i*(*outFilterSize) + j]= intV; - error= v - intV*sum; + sum = (sum + one / 2) / one; + for (j = 0; j < *outFilterSize; j++) { + int64_t v = filter[i * filterSize + j] + error; + int intV = ROUNDED_DIV(v, sum); + (*outFilter)[i * (*outFilterSize) + j] = intV; + error = v - intV * sum; } } - (*filterPos)[dstW+0] = - (*filterPos)[dstW+1] = - (*filterPos)[dstW+2] = (*filterPos)[dstW-1]; // the MMX/SSE scaler will read over the end - for (i=0; i<*outFilterSize; i++) { - int k= (dstW - 1) * (*outFilterSize) + i; + (*filterPos)[dstW + 0] = + (*filterPos)[dstW + 1] = + (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will + * read over the end */ + for (i = 0; i < *outFilterSize; i++) { + int k = (dstW - 1) * (*outFilterSize) + i; (*outFilter)[k + 1 * (*outFilterSize)] = (*outFilter)[k + 2 * (*outFilterSize)] = (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k]; } - ret=0; + ret = 0; + fail: av_free(filter); av_free(filter2); @@ -526,7 +577,8 @@ fail: } #if HAVE_MMX2 -static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits) +static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, + int16_t *filter, int32_t *filterPos, int numSplits) { uint8_t *fragmentA; x86_reg imm8OfPShufW1A; @@ -541,18 +593,17 @@ static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *fil int xpos, i; // create an optimized horizontal scaling routine - /* This scaler is made of runtime-generated MMX2 code using specially - * tuned pshufw instructions. For every four output pixels, if four - * input pixels are enough for the fast bilinear scaling, then a chunk - * of fragmentB is used. If five input pixels are needed, then a chunk - * of fragmentA is used. + /* This scaler is made of runtime-generated MMX2 code using specially tuned + * pshufw instructions. For every four output pixels, if four input pixels + * are enough for the fast bilinear scaling, then a chunk of fragmentB is + * used. If five input pixels are needed, then a chunk of fragmentA is used. */ - //code fragment + // code fragment - __asm__ volatile( + __asm__ volatile ( "jmp 9f \n\t" - // Begin + // Begin "0: \n\t" "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t" "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t" @@ -572,27 +623,27 @@ static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *fil "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t" "add $8, %%"REG_a" \n\t" - // End + // End "9: \n\t" -// "int $3 \n\t" - "lea " LOCAL_MANGLE(0b) ", %0 \n\t" - "lea " LOCAL_MANGLE(1b) ", %1 \n\t" - "lea " LOCAL_MANGLE(2b) ", %2 \n\t" + // "int $3 \n\t" + "lea " LOCAL_MANGLE(0b) ", %0 \n\t" + "lea " LOCAL_MANGLE(1b) ", %1 \n\t" + "lea " LOCAL_MANGLE(2b) ", %2 \n\t" "dec %1 \n\t" "dec %2 \n\t" "sub %0, %1 \n\t" "sub %0, %2 \n\t" - "lea " LOCAL_MANGLE(9b) ", %3 \n\t" + "lea " LOCAL_MANGLE(9b) ", %3 \n\t" "sub %0, %3 \n\t" - :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A), - "=r" (fragmentLengthA) - ); + : "=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A), + "=r" (fragmentLengthA) + ); - __asm__ volatile( + __asm__ volatile ( "jmp 9f \n\t" - // Begin + // Begin "0: \n\t" "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t" "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t" @@ -610,76 +661,81 @@ static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *fil "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t" "add $8, %%"REG_a" \n\t" - // End + // End "9: \n\t" -// "int $3 \n\t" - "lea " LOCAL_MANGLE(0b) ", %0 \n\t" - "lea " LOCAL_MANGLE(1b) ", %1 \n\t" - "lea " LOCAL_MANGLE(2b) ", %2 \n\t" + // "int $3 \n\t" + "lea " LOCAL_MANGLE(0b) ", %0 \n\t" + "lea " LOCAL_MANGLE(1b) ", %1 \n\t" + "lea " LOCAL_MANGLE(2b) ", %2 \n\t" "dec %1 \n\t" "dec %2 \n\t" "sub %0, %1 \n\t" "sub %0, %2 \n\t" - "lea " LOCAL_MANGLE(9b) ", %3 \n\t" + "lea " LOCAL_MANGLE(9b) ", %3 \n\t" "sub %0, %3 \n\t" - :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B), - "=r" (fragmentLengthB) - ); + : "=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B), + "=r" (fragmentLengthB) + ); - xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers - fragmentPos=0; + xpos = 0; // lumXInc/2 - 0x8000; // difference between pixel centers + fragmentPos = 0; - for (i=0; i<dstW/numSplits; i++) { - int xx=xpos>>16; + for (i = 0; i < dstW / numSplits; i++) { + int xx = xpos >> 16; - if ((i&3) == 0) { - int a=0; - int b=((xpos+xInc)>>16) - xx; - int c=((xpos+xInc*2)>>16) - xx; - int d=((xpos+xInc*3)>>16) - xx; - int inc = (d+1<4); - uint8_t *fragment = (d+1<4) ? fragmentB : fragmentA; - x86_reg imm8OfPShufW1 = (d+1<4) ? imm8OfPShufW1B : imm8OfPShufW1A; - x86_reg imm8OfPShufW2 = (d+1<4) ? imm8OfPShufW2B : imm8OfPShufW2A; - x86_reg fragmentLength = (d+1<4) ? fragmentLengthB : fragmentLengthA; - int maxShift= 3-(d+inc); - int shift=0; + if ((i & 3) == 0) { + int a = 0; + int b = ((xpos + xInc) >> 16) - xx; + int c = ((xpos + xInc * 2) >> 16) - xx; + int d = ((xpos + xInc * 3) >> 16) - xx; + int inc = (d + 1 < 4); + uint8_t *fragment = (d + 1 < 4) ? fragmentB : fragmentA; + x86_reg imm8OfPShufW1 = (d + 1 < 4) ? imm8OfPShufW1B : imm8OfPShufW1A; + x86_reg imm8OfPShufW2 = (d + 1 < 4) ? imm8OfPShufW2B : imm8OfPShufW2A; + x86_reg fragmentLength = (d + 1 < 4) ? fragmentLengthB : fragmentLengthA; + int maxShift = 3 - (d + inc); + int shift = 0; if (filterCode) { - filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9; - filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9; - filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9; - filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9; - filterPos[i/2]= xx; + filter[i] = ((xpos & 0xFFFF) ^ 0xFFFF) >> 9; + filter[i + 1] = (((xpos + xInc) & 0xFFFF) ^ 0xFFFF) >> 9; + filter[i + 2] = (((xpos + xInc * 2) & 0xFFFF) ^ 0xFFFF) >> 9; + filter[i + 3] = (((xpos + xInc * 3) & 0xFFFF) ^ 0xFFFF) >> 9; + filterPos[i / 2] = xx; memcpy(filterCode + fragmentPos, fragment, fragmentLength); - filterCode[fragmentPos + imm8OfPShufW1]= - (a+inc) | ((b+inc)<<2) | ((c+inc)<<4) | ((d+inc)<<6); - filterCode[fragmentPos + imm8OfPShufW2]= - a | (b<<2) | (c<<4) | (d<<6); - - if (i+4-inc>=dstW) shift=maxShift; //avoid overread - else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align - - if (shift && i>=shift) { - filterCode[fragmentPos + imm8OfPShufW1]+= 0x55*shift; - filterCode[fragmentPos + imm8OfPShufW2]+= 0x55*shift; - filterPos[i/2]-=shift; + filterCode[fragmentPos + imm8OfPShufW1] = (a + inc) | + ((b + inc) << 2) | + ((c + inc) << 4) | + ((d + inc) << 6); + filterCode[fragmentPos + imm8OfPShufW2] = a | (b << 2) | + (c << 4) | + (d << 6); + + if (i + 4 - inc >= dstW) + shift = maxShift; // avoid overread + else if ((filterPos[i / 2] & 3) <= maxShift) + shift = filterPos[i / 2] & 3; // align + + if (shift && i >= shift) { + filterCode[fragmentPos + imm8OfPShufW1] += 0x55 * shift; + filterCode[fragmentPos + imm8OfPShufW2] += 0x55 * shift; + filterPos[i / 2] -= shift; } } - fragmentPos+= fragmentLength; + fragmentPos += fragmentLength; if (filterCode) - filterCode[fragmentPos]= RET; + filterCode[fragmentPos] = RET; } - xpos+=xInc; + xpos += xInc; } if (filterCode) - filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part + filterPos[((i / 2) + 1) & (~1)] = xpos >> 16; // needed to jump to the next part return fragmentPos + 1; } @@ -695,24 +751,27 @@ int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation) { - memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4); - memcpy(c->dstColorspaceTable, table, sizeof(int)*4); + memcpy(c->srcColorspaceTable, inv_table, sizeof(int) * 4); + memcpy(c->dstColorspaceTable, table, sizeof(int) * 4); - c->brightness= brightness; - c->contrast = contrast; - c->saturation= saturation; - c->srcRange = srcRange; - c->dstRange = dstRange; - if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1; + c->brightness = brightness; + c->contrast = contrast; + c->saturation = saturation; + c->srcRange = srcRange; + c->dstRange = dstRange; + if (isYUV(c->dstFormat) || isGray(c->dstFormat)) + return -1; c->dstFormatBpp = av_get_bits_per_pixel(&av_pix_fmt_descriptors[c->dstFormat]); c->srcFormatBpp = av_get_bits_per_pixel(&av_pix_fmt_descriptors[c->srcFormat]); - ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation); - //FIXME factorize + ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, + contrast, saturation); + // FIXME factorize if (HAVE_ALTIVEC && av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) - ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation); + ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, + contrast, saturation); return 0; } @@ -720,15 +779,16 @@ int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation) { - if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1; + if (isYUV(c->dstFormat) || isGray(c->dstFormat)) + return -1; - *inv_table = c->srcColorspaceTable; - *table = c->dstColorspaceTable; - *srcRange = c->srcRange; - *dstRange = c->dstRange; - *brightness= c->brightness; - *contrast = c->contrast; - *saturation= c->saturation; + *inv_table = c->srcColorspaceTable; + *table = c->dstColorspaceTable; + *srcRange = c->srcRange; + *dstRange = c->dstRange; + *brightness = c->brightness; + *contrast = c->contrast; + *saturation = c->saturation; return 0; } @@ -736,17 +796,26 @@ int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, static int handle_jpeg(enum PixelFormat *format) { switch (*format) { - case PIX_FMT_YUVJ420P: *format = PIX_FMT_YUV420P; return 1; - case PIX_FMT_YUVJ422P: *format = PIX_FMT_YUV422P; return 1; - case PIX_FMT_YUVJ444P: *format = PIX_FMT_YUV444P; return 1; - case PIX_FMT_YUVJ440P: *format = PIX_FMT_YUV440P; return 1; - default: return 0; + case PIX_FMT_YUVJ420P: + *format = PIX_FMT_YUV420P; + return 1; + case PIX_FMT_YUVJ422P: + *format = PIX_FMT_YUV422P; + return 1; + case PIX_FMT_YUVJ444P: + *format = PIX_FMT_YUV444P; + return 1; + case PIX_FMT_YUVJ440P: + *format = PIX_FMT_YUV440P; + return 1; + default: + return 0; } } SwsContext *sws_alloc_context(void) { - SwsContext *c= av_mallocz(sizeof(SwsContext)); + SwsContext *c = av_mallocz(sizeof(SwsContext)); c->av_class = &sws_context_class; av_opt_set_defaults(c); @@ -759,117 +828,133 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter) int i; int usesVFilter, usesHFilter; int unscaled; - SwsFilter dummyFilter= {NULL, NULL, NULL, NULL}; - int srcW= c->srcW; - int srcH= c->srcH; - int dstW= c->dstW; - int dstH= c->dstH; - int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 16, 16), dst_stride_px = dst_stride >> 1; + SwsFilter dummyFilter = { NULL, NULL, NULL, NULL }; + int srcW = c->srcW; + int srcH = c->srcH; + int dstW = c->dstW; + int dstH = c->dstH; + int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 16, 16); + int dst_stride_px = dst_stride >> 1; int flags, cpu_flags; - enum PixelFormat srcFormat= c->srcFormat; - enum PixelFormat dstFormat= c->dstFormat; + enum PixelFormat srcFormat = c->srcFormat; + enum PixelFormat dstFormat = c->dstFormat; cpu_flags = av_get_cpu_flags(); flags = c->flags; emms_c(); - if (!rgb15to16) sws_rgb2rgb_init(); + if (!rgb15to16) + sws_rgb2rgb_init(); unscaled = (srcW == dstW && srcH == dstH); if (!sws_isSupportedInput(srcFormat)) { - av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n", sws_format_name(srcFormat)); + av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n", + sws_format_name(srcFormat)); return AVERROR(EINVAL); } if (!sws_isSupportedOutput(dstFormat)) { - av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n", sws_format_name(dstFormat)); + av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n", + sws_format_name(dstFormat)); return AVERROR(EINVAL); } - i= flags & ( SWS_POINT - |SWS_AREA - |SWS_BILINEAR - |SWS_FAST_BILINEAR - |SWS_BICUBIC - |SWS_X - |SWS_GAUSS - |SWS_LANCZOS - |SWS_SINC - |SWS_SPLINE - |SWS_BICUBLIN); - if(!i || (i & (i-1))) { - av_log(c, AV_LOG_ERROR, "Exactly one scaler algorithm must be chosen\n"); + i = flags & (SWS_POINT | + SWS_AREA | + SWS_BILINEAR | + SWS_FAST_BILINEAR | + SWS_BICUBIC | + SWS_X | + SWS_GAUSS | + SWS_LANCZOS | + SWS_SINC | + SWS_SPLINE | + SWS_BICUBLIN); + if (!i || (i & (i - 1))) { + av_log(c, AV_LOG_ERROR, + "Exactly one scaler algorithm must be chosen\n"); return AVERROR(EINVAL); } /* sanity check */ - if (srcW<4 || srcH<1 || dstW<8 || dstH<1) { //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code + if (srcW < 4 || srcH < 1 || dstW < 8 || dstH < 1) { + /* FIXME check if these are enough and try to lower them after + * fixing the relevant parts of the code */ av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n", srcW, srcH, dstW, dstH); return AVERROR(EINVAL); } - if (!dstFilter) dstFilter= &dummyFilter; - if (!srcFilter) srcFilter= &dummyFilter; + if (!dstFilter) + dstFilter = &dummyFilter; + if (!srcFilter) + srcFilter = &dummyFilter; - c->lumXInc= (((int64_t)srcW<<16) + (dstW>>1))/dstW; - c->lumYInc= (((int64_t)srcH<<16) + (dstH>>1))/dstH; + c->lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW; + c->lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH; c->dstFormatBpp = av_get_bits_per_pixel(&av_pix_fmt_descriptors[dstFormat]); c->srcFormatBpp = av_get_bits_per_pixel(&av_pix_fmt_descriptors[srcFormat]); - c->vRounder= 4* 0x0001000100010001ULL; + c->vRounder = 4 * 0x0001000100010001ULL; - usesVFilter = (srcFilter->lumV && srcFilter->lumV->length>1) || - (srcFilter->chrV && srcFilter->chrV->length>1) || - (dstFilter->lumV && dstFilter->lumV->length>1) || - (dstFilter->chrV && dstFilter->chrV->length>1); - usesHFilter = (srcFilter->lumH && srcFilter->lumH->length>1) || - (srcFilter->chrH && srcFilter->chrH->length>1) || - (dstFilter->lumH && dstFilter->lumH->length>1) || - (dstFilter->chrH && dstFilter->chrH->length>1); + usesVFilter = (srcFilter->lumV && srcFilter->lumV->length > 1) || + (srcFilter->chrV && srcFilter->chrV->length > 1) || + (dstFilter->lumV && dstFilter->lumV->length > 1) || + (dstFilter->chrV && dstFilter->chrV->length > 1); + usesHFilter = (srcFilter->lumH && srcFilter->lumH->length > 1) || + (srcFilter->chrH && srcFilter->chrH->length > 1) || + (dstFilter->lumH && dstFilter->lumH->length > 1) || + (dstFilter->chrH && dstFilter->chrH->length > 1); getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat); getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat); - // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation + /* reuse chroma for 2 pixels RGB/BGR unless user wants full + * chroma interpolation */ if (flags & SWS_FULL_CHR_H_INT && - isAnyRGB(dstFormat) && - dstFormat != PIX_FMT_RGBA && - dstFormat != PIX_FMT_ARGB && - dstFormat != PIX_FMT_BGRA && - dstFormat != PIX_FMT_ABGR && + isAnyRGB(dstFormat) && + dstFormat != PIX_FMT_RGBA && + dstFormat != PIX_FMT_ARGB && + dstFormat != PIX_FMT_BGRA && + dstFormat != PIX_FMT_ABGR && dstFormat != PIX_FMT_RGB24 && dstFormat != PIX_FMT_BGR24) { av_log(c, AV_LOG_ERROR, "full chroma interpolation for destination format '%s' not yet implemented\n", sws_format_name(dstFormat)); - flags &= ~SWS_FULL_CHR_H_INT; + flags &= ~SWS_FULL_CHR_H_INT; c->flags = flags; } - if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1; + if (isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT)) + c->chrDstHSubSample = 1; // drop some chroma lines if the user wants it - c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT; - c->chrSrcVSubSample+= c->vChrDrop; - - // drop every other pixel for chroma calculation unless user wants full chroma - if (isAnyRGB(srcFormat) && !(flags&SWS_FULL_CHR_H_INP) - && srcFormat!=PIX_FMT_RGB8 && srcFormat!=PIX_FMT_BGR8 - && srcFormat!=PIX_FMT_RGB4 && srcFormat!=PIX_FMT_BGR4 - && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE - && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&SWS_FAST_BILINEAR))) - c->chrSrcHSubSample=1; + c->vChrDrop = (flags & SWS_SRC_V_CHR_DROP_MASK) >> + SWS_SRC_V_CHR_DROP_SHIFT; + c->chrSrcVSubSample += c->vChrDrop; + + /* drop every other pixel for chroma calculation unless user + * wants full chroma */ + if (isAnyRGB(srcFormat) && !(flags & SWS_FULL_CHR_H_INP) && + srcFormat != PIX_FMT_RGB8 && srcFormat != PIX_FMT_BGR8 && + srcFormat != PIX_FMT_RGB4 && srcFormat != PIX_FMT_BGR4 && + srcFormat != PIX_FMT_RGB4_BYTE && srcFormat != PIX_FMT_BGR4_BYTE && + ((dstW >> c->chrDstHSubSample) <= (srcW >> 1) || + (flags & SWS_FAST_BILINEAR))) + c->chrSrcHSubSample = 1; // Note the -((-x)>>y) is so that we always round toward +inf. - c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample); - c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample); - c->chrDstW= -((-dstW) >> c->chrDstHSubSample); - c->chrDstH= -((-dstH) >> c->chrDstVSubSample); + c->chrSrcW = -((-srcW) >> c->chrSrcHSubSample); + c->chrSrcH = -((-srcH) >> c->chrSrcVSubSample); + c->chrDstW = -((-dstW) >> c->chrDstHSubSample); + c->chrDstH = -((-dstH) >> c->chrDstVSubSample); /* unscaled special cases */ - if (unscaled && !usesHFilter && !usesVFilter && (c->srcRange == c->dstRange || isAnyRGB(dstFormat))) { + if (unscaled && !usesHFilter && !usesVFilter && + (c->srcRange == c->dstRange || isAnyRGB(dstFormat))) { ff_get_unscaled_swscale(c); if (c->swScale) { - if (flags&SWS_PRINT_INFO) - av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n", + if (flags & SWS_PRINT_INFO) + av_log(c, AV_LOG_INFO, + "using unscaled %s -> %s special converter\n", sws_format_name(srcFormat), sws_format_name(dstFormat)); return 0; } @@ -886,35 +971,40 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter) FF_ALLOC_OR_GOTO(c, c->formatConvBuffer, (FFALIGN(srcW, 16) * 2 * FFALIGN(c->srcBpc, 8) >> 3) + 16, fail); - if (HAVE_MMX2 && cpu_flags & AV_CPU_FLAG_MMX2 && c->srcBpc == 8 && c->dstBpc <= 10) { - c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0; - if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR)) { - if (flags&SWS_PRINT_INFO) - av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n"); + if (HAVE_MMX2 && cpu_flags & AV_CPU_FLAG_MMX2 && + c->srcBpc == 8 && c->dstBpc <= 10) { + c->canMMX2BeUsed = (dstW >= srcW && (dstW & 31) == 0 && + (srcW & 15) == 0) ? 1 : 0; + if (!c->canMMX2BeUsed && dstW >= srcW && (srcW & 15) == 0 + && (flags & SWS_FAST_BILINEAR)) { + if (flags & SWS_PRINT_INFO) + av_log(c, AV_LOG_INFO, + "output width is not a multiple of 32 -> no MMX2 scaler\n"); } - if (usesHFilter) c->canMMX2BeUsed=0; - } - else - c->canMMX2BeUsed=0; - - c->chrXInc= (((int64_t)c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW; - c->chrYInc= (((int64_t)c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH; - - // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst - // but only for the FAST_BILINEAR mode otherwise do correct scaling - // n-2 is the last chrominance sample available - // this is not perfect, but no one should notice the difference, the more correct variant - // would be like the vertical one, but that would require some special code for the - // first and last pixel - if (flags&SWS_FAST_BILINEAR) { + if (usesHFilter) + c->canMMX2BeUsed = 0; + } else + c->canMMX2BeUsed = 0; + + c->chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW; + c->chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH; + + /* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src + * to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do + * correct scaling. + * n-2 is the last chrominance sample available. + * This is not perfect, but no one should notice the difference, the more + * correct variant would be like the vertical one, but that would require + * some special code for the first and last pixel */ + if (flags & SWS_FAST_BILINEAR) { if (c->canMMX2BeUsed) { - c->lumXInc+= 20; - c->chrXInc+= 20; + c->lumXInc += 20; + c->chrXInc += 20; } - //we don't use the x86 asm scaler if MMX is available + // we don't use the x86 asm scaler if MMX is available else if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) { - c->lumXInc = ((int64_t)(srcW-2)<<16)/(dstW-2) - 20; - c->chrXInc = ((int64_t)(c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20; + c->lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20; + c->chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20; } } @@ -923,8 +1013,10 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter) #if HAVE_MMX2 // can't downscale !!! if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR)) { - c->lumMmx2FilterCodeSize = initMMX2HScaler( dstW, c->lumXInc, NULL, NULL, NULL, 8); - c->chrMmx2FilterCodeSize = initMMX2HScaler(c->chrDstW, c->chrXInc, NULL, NULL, NULL, 4); + c->lumMmx2FilterCodeSize = initMMX2HScaler(dstW, c->lumXInc, NULL, + NULL, NULL, 8); + c->chrMmx2FilterCodeSize = initMMX2HScaler(c->chrDstW, c->chrXInc, + NULL, NULL, NULL, 4); #ifdef MAP_ANONYMOUS c->lumMmx2FilterCode = mmap(NULL, c->lumMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); @@ -939,13 +1031,15 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter) if (!c->lumMmx2FilterCode || !c->chrMmx2FilterCode) return AVERROR(ENOMEM); - FF_ALLOCZ_OR_GOTO(c, c->hLumFilter , (dstW /8+8)*sizeof(int16_t), fail); - FF_ALLOCZ_OR_GOTO(c, c->hChrFilter , (c->chrDstW /4+8)*sizeof(int16_t), fail); - FF_ALLOCZ_OR_GOTO(c, c->hLumFilterPos, (dstW /2/8+8)*sizeof(int32_t), fail); - FF_ALLOCZ_OR_GOTO(c, c->hChrFilterPos, (c->chrDstW/2/4+8)*sizeof(int32_t), fail); + FF_ALLOCZ_OR_GOTO(c, c->hLumFilter, (dstW / 8 + 8) * sizeof(int16_t), fail); + FF_ALLOCZ_OR_GOTO(c, c->hChrFilter, (c->chrDstW / 4 + 8) * sizeof(int16_t), fail); + FF_ALLOCZ_OR_GOTO(c, c->hLumFilterPos, (dstW / 2 / 8 + 8) * sizeof(int32_t), fail); + FF_ALLOCZ_OR_GOTO(c, c->hChrFilterPos, (c->chrDstW / 2 / 4 + 8) * sizeof(int32_t), fail); - initMMX2HScaler( dstW, c->lumXInc, c->lumMmx2FilterCode, c->hLumFilter, c->hLumFilterPos, 8); - initMMX2HScaler(c->chrDstW, c->chrXInc, c->chrMmx2FilterCode, c->hChrFilter, c->hChrFilterPos, 4); + initMMX2HScaler(dstW, c->lumXInc, c->lumMmx2FilterCode, + c->hLumFilter, c->hLumFilterPos, 8); + initMMX2HScaler(c->chrDstW, c->chrXInc, c->chrMmx2FilterCode, + c->hChrFilter, c->hChrFilterPos, 4); #ifdef MAP_ANONYMOUS mprotect(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, PROT_EXEC | PROT_READ); @@ -954,182 +1048,221 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter) } else #endif /* HAVE_MMX2 */ { - const int filterAlign= - (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) ? 4 : + const int filterAlign = + (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) ? 4 : (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) ? 8 : 1; - if (initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc, - srcW , dstW, filterAlign, 1<<14, - (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags, cpu_flags, - srcFilter->lumH, dstFilter->lumH, c->param, 1) < 0) + if (initFilter(&c->hLumFilter, &c->hLumFilterPos, + &c->hLumFilterSize, c->lumXInc, + srcW, dstW, filterAlign, 1 << 14, + (flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags, + cpu_flags, srcFilter->lumH, dstFilter->lumH, + c->param, 1) < 0) goto fail; - if (initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc, - c->chrSrcW, c->chrDstW, filterAlign, 1<<14, - (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags, cpu_flags, - srcFilter->chrH, dstFilter->chrH, c->param, 1) < 0) + if (initFilter(&c->hChrFilter, &c->hChrFilterPos, + &c->hChrFilterSize, c->chrXInc, + c->chrSrcW, c->chrDstW, filterAlign, 1 << 14, + (flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags, + cpu_flags, srcFilter->chrH, dstFilter->chrH, + c->param, 1) < 0) goto fail; } } // initialize horizontal stuff /* precalculate vertical scaler filter coefficients */ { - const int filterAlign= - (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) ? 2 : + const int filterAlign = + (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) ? 2 : (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) ? 8 : 1; - if (initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc, - srcH , dstH, filterAlign, (1<<12), - (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags, cpu_flags, - srcFilter->lumV, dstFilter->lumV, c->param, 0) < 0) + if (initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, + c->lumYInc, srcH, dstH, filterAlign, (1 << 12), + (flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags, + cpu_flags, srcFilter->lumV, dstFilter->lumV, + c->param, 0) < 0) goto fail; - if (initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc, - c->chrSrcH, c->chrDstH, filterAlign, (1<<12), - (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags, cpu_flags, - srcFilter->chrV, dstFilter->chrV, c->param, 0) < 0) + if (initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, + c->chrYInc, c->chrSrcH, c->chrDstH, + filterAlign, (1 << 12), + (flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags, + cpu_flags, srcFilter->chrV, dstFilter->chrV, + c->param, 0) < 0) goto fail; #if HAVE_ALTIVEC - FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof (vector signed short)*c->vLumFilterSize*c->dstH, fail); - FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH, fail); + FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof(vector signed short) * c->vLumFilterSize * c->dstH, fail); + FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof(vector signed short) * c->vChrFilterSize * c->chrDstH, fail); - for (i=0;i<c->vLumFilterSize*c->dstH;i++) { + for (i = 0; i < c->vLumFilterSize * c->dstH; i++) { int j; short *p = (short *)&c->vYCoeffsBank[i]; - for (j=0;j<8;j++) + for (j = 0; j < 8; j++) p[j] = c->vLumFilter[i]; } - for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) { + for (i = 0; i < c->vChrFilterSize * c->chrDstH; i++) { int j; short *p = (short *)&c->vCCoeffsBank[i]; - for (j=0;j<8;j++) + for (j = 0; j < 8; j++) p[j] = c->vChrFilter[i]; } #endif } // calculate buffer sizes so that they won't run out while handling these damn slices - c->vLumBufSize= c->vLumFilterSize; - c->vChrBufSize= c->vChrFilterSize; - for (i=0; i<dstH; i++) { - int chrI = (int64_t) i * c->chrDstH / dstH; - int nextSlice= FFMAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1, - ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample)); - - nextSlice>>= c->chrSrcVSubSample; - nextSlice<<= c->chrSrcVSubSample; - if (c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice) - c->vLumBufSize= nextSlice - c->vLumFilterPos[i]; - if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample)) - c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI]; + c->vLumBufSize = c->vLumFilterSize; + c->vChrBufSize = c->vChrFilterSize; + for (i = 0; i < dstH; i++) { + int chrI = (int64_t)i * c->chrDstH / dstH; + int nextSlice = FFMAX(c->vLumFilterPos[i] + c->vLumFilterSize - 1, + ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1) + << c->chrSrcVSubSample)); + + nextSlice >>= c->chrSrcVSubSample; + nextSlice <<= c->chrSrcVSubSample; + if (c->vLumFilterPos[i] + c->vLumBufSize < nextSlice) + c->vLumBufSize = nextSlice - c->vLumFilterPos[i]; + if (c->vChrFilterPos[chrI] + c->vChrBufSize < + (nextSlice >> c->chrSrcVSubSample)) + c->vChrBufSize = (nextSlice >> c->chrSrcVSubSample) - + c->vChrFilterPos[chrI]; } - // allocate pixbufs (we use dynamic allocation because otherwise we would need to - // allocate several megabytes to handle all possible cases) - FF_ALLOC_OR_GOTO(c, c->lumPixBuf, c->vLumBufSize*3*sizeof(int16_t*), fail); - FF_ALLOC_OR_GOTO(c, c->chrUPixBuf, c->vChrBufSize*3*sizeof(int16_t*), fail); - FF_ALLOC_OR_GOTO(c, c->chrVPixBuf, c->vChrBufSize*3*sizeof(int16_t*), fail); + /* Allocate pixbufs (we use dynamic allocation because otherwise we would + * need to allocate several megabytes to handle all possible cases) */ + FF_ALLOC_OR_GOTO(c, c->lumPixBuf, c->vLumBufSize * 3 * sizeof(int16_t *), fail); + FF_ALLOC_OR_GOTO(c, c->chrUPixBuf, c->vChrBufSize * 3 * sizeof(int16_t *), fail); + FF_ALLOC_OR_GOTO(c, c->chrVPixBuf, c->vChrBufSize * 3 * sizeof(int16_t *), fail); if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) - FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf, c->vLumBufSize*3*sizeof(int16_t*), fail); - //Note we need at least one pixel more at the end because of the MMX code (just in case someone wanna replace the 4000/8000) + FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf, c->vLumBufSize * 3 * sizeof(int16_t *), fail); + /* Note we need at least one pixel more at the end because of the MMX code + * (just in case someone wants to replace the 4000/8000). */ /* align at 16 bytes for AltiVec */ - for (i=0; i<c->vLumBufSize; i++) { - FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i+c->vLumBufSize], dst_stride+16, fail); - c->lumPixBuf[i] = c->lumPixBuf[i+c->vLumBufSize]; + for (i = 0; i < c->vLumBufSize; i++) { + FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i + c->vLumBufSize], + dst_stride + 16, fail); + c->lumPixBuf[i] = c->lumPixBuf[i + c->vLumBufSize]; } // 64 / (c->dstBpc & ~7) is the same as 16 / sizeof(scaling_intermediate) - c->uv_off_px = dst_stride_px + 64 / (c->dstBpc &~ 7); + c->uv_off_px = dst_stride_px + 64 / (c->dstBpc & ~7); c->uv_off_byte = dst_stride + 16; - for (i=0; i<c->vChrBufSize; i++) { - FF_ALLOC_OR_GOTO(c, c->chrUPixBuf[i+c->vChrBufSize], dst_stride*2+32, fail); - c->chrUPixBuf[i] = c->chrUPixBuf[i+c->vChrBufSize]; - c->chrVPixBuf[i] = c->chrVPixBuf[i+c->vChrBufSize] = c->chrUPixBuf[i] + (dst_stride >> 1) + 8; + for (i = 0; i < c->vChrBufSize; i++) { + FF_ALLOC_OR_GOTO(c, c->chrUPixBuf[i + c->vChrBufSize], + dst_stride * 2 + 32, fail); + c->chrUPixBuf[i] = c->chrUPixBuf[i + c->vChrBufSize]; + c->chrVPixBuf[i] = c->chrVPixBuf[i + c->vChrBufSize] + = c->chrUPixBuf[i] + (dst_stride >> 1) + 8; } if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) - for (i=0; i<c->vLumBufSize; i++) { - FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i+c->vLumBufSize], dst_stride+16, fail); - c->alpPixBuf[i] = c->alpPixBuf[i+c->vLumBufSize]; + for (i = 0; i < c->vLumBufSize; i++) { + FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i + c->vLumBufSize], + dst_stride + 16, fail); + c->alpPixBuf[i] = c->alpPixBuf[i + c->vLumBufSize]; } - //try to avoid drawing green stuff between the right end and the stride end - for (i=0; i<c->vChrBufSize; i++) - memset(c->chrUPixBuf[i], 64, dst_stride*2+1); + // try to avoid drawing green stuff between the right end and the stride end + for (i = 0; i < c->vChrBufSize; i++) + memset(c->chrUPixBuf[i], 64, dst_stride * 2 + 1); assert(c->chrDstH <= dstH); - if (flags&SWS_PRINT_INFO) { - if (flags&SWS_FAST_BILINEAR) av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, "); - else if (flags&SWS_BILINEAR) av_log(c, AV_LOG_INFO, "BILINEAR scaler, "); - else if (flags&SWS_BICUBIC) av_log(c, AV_LOG_INFO, "BICUBIC scaler, "); - else if (flags&SWS_X) av_log(c, AV_LOG_INFO, "Experimental scaler, "); - else if (flags&SWS_POINT) av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, "); - else if (flags&SWS_AREA) av_log(c, AV_LOG_INFO, "Area Averaging scaler, "); - else if (flags&SWS_BICUBLIN) av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, "); - else if (flags&SWS_GAUSS) av_log(c, AV_LOG_INFO, "Gaussian scaler, "); - else if (flags&SWS_SINC) av_log(c, AV_LOG_INFO, "Sinc scaler, "); - else if (flags&SWS_LANCZOS) av_log(c, AV_LOG_INFO, "Lanczos scaler, "); - else if (flags&SWS_SPLINE) av_log(c, AV_LOG_INFO, "Bicubic spline scaler, "); - else av_log(c, AV_LOG_INFO, "ehh flags invalid?! "); + if (flags & SWS_PRINT_INFO) { + if (flags & SWS_FAST_BILINEAR) + av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, "); + else if (flags & SWS_BILINEAR) + av_log(c, AV_LOG_INFO, "BILINEAR scaler, "); + else if (flags & SWS_BICUBIC) + av_log(c, AV_LOG_INFO, "BICUBIC scaler, "); + else if (flags & SWS_X) + av_log(c, AV_LOG_INFO, "Experimental scaler, "); + else if (flags & SWS_POINT) + av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, "); + else if (flags & SWS_AREA) + av_log(c, AV_LOG_INFO, "Area Averaging scaler, "); + else if (flags & SWS_BICUBLIN) + av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, "); + else if (flags & SWS_GAUSS) + av_log(c, AV_LOG_INFO, "Gaussian scaler, "); + else if (flags & SWS_SINC) + av_log(c, AV_LOG_INFO, "Sinc scaler, "); + else if (flags & SWS_LANCZOS) + av_log(c, AV_LOG_INFO, "Lanczos scaler, "); + else if (flags & SWS_SPLINE) + av_log(c, AV_LOG_INFO, "Bicubic spline scaler, "); + else + av_log(c, AV_LOG_INFO, "ehh flags invalid?! "); av_log(c, AV_LOG_INFO, "from %s to %s%s ", sws_format_name(srcFormat), #ifdef DITHER1XBPP - dstFormat == PIX_FMT_BGR555 || dstFormat == PIX_FMT_BGR565 || + dstFormat == PIX_FMT_BGR555 || dstFormat == PIX_FMT_BGR565 || dstFormat == PIX_FMT_RGB444BE || dstFormat == PIX_FMT_RGB444LE || - dstFormat == PIX_FMT_BGR444BE || dstFormat == PIX_FMT_BGR444LE ? "dithered " : "", + dstFormat == PIX_FMT_BGR444BE || dstFormat == PIX_FMT_BGR444LE ? + "dithered " : "", #else "", #endif sws_format_name(dstFormat)); - if (HAVE_MMX2 && cpu_flags & AV_CPU_FLAG_MMX2) av_log(c, AV_LOG_INFO, "using MMX2\n"); - else if (HAVE_AMD3DNOW && cpu_flags & AV_CPU_FLAG_3DNOW) av_log(c, AV_LOG_INFO, "using 3DNOW\n"); - else if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) av_log(c, AV_LOG_INFO, "using MMX\n"); - else if (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) av_log(c, AV_LOG_INFO, "using AltiVec\n"); - else av_log(c, AV_LOG_INFO, "using C\n"); + if (HAVE_MMX2 && cpu_flags & AV_CPU_FLAG_MMX2) + av_log(c, AV_LOG_INFO, "using MMX2\n"); + else if (HAVE_AMD3DNOW && cpu_flags & AV_CPU_FLAG_3DNOW) + av_log(c, AV_LOG_INFO, "using 3DNOW\n"); + else if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) + av_log(c, AV_LOG_INFO, "using MMX\n"); + else if (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) + av_log(c, AV_LOG_INFO, "using AltiVec\n"); + else + av_log(c, AV_LOG_INFO, "using C\n"); av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH); - av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n", + av_log(c, AV_LOG_DEBUG, + "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n", c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc); - av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n", - c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc); + av_log(c, AV_LOG_DEBUG, + "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n", + c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, + c->chrXInc, c->chrYInc); } - c->swScale= ff_getSwsFunc(c); + c->swScale = ff_getSwsFunc(c); return 0; -fail: //FIXME replace things by appropriate error codes +fail: // FIXME replace things by appropriate error codes return -1; } #if FF_API_SWS_GETCONTEXT SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, - int dstW, int dstH, enum PixelFormat dstFormat, int flags, - SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param) + int dstW, int dstH, enum PixelFormat dstFormat, + int flags, SwsFilter *srcFilter, + SwsFilter *dstFilter, const double *param) { SwsContext *c; - if(!(c=sws_alloc_context())) + if (!(c = sws_alloc_context())) return NULL; - c->flags= flags; - c->srcW= srcW; - c->srcH= srcH; - c->dstW= dstW; - c->dstH= dstH; - c->srcRange = handle_jpeg(&srcFormat); - c->dstRange = handle_jpeg(&dstFormat); - c->srcFormat= srcFormat; - c->dstFormat= dstFormat; + c->flags = flags; + c->srcW = srcW; + c->srcH = srcH; + c->dstW = dstW; + c->dstH = dstH; + c->srcRange = handle_jpeg(&srcFormat); + c->dstRange = handle_jpeg(&dstFormat); + c->srcFormat = srcFormat; + c->dstFormat = dstFormat; if (param) { c->param[0] = param[0]; c->param[1] = param[1]; } - sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], c->srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, c->dstRange, 0, 1<<16, 1<<16); + sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], c->srcRange, + ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, + c->dstRange, 0, 1 << 16, 1 << 16); - if(sws_init_context(c, srcFilter, dstFilter) < 0){ + if (sws_init_context(c, srcFilter, dstFilter) < 0) { sws_freeContext(c); return NULL; } @@ -1143,28 +1276,28 @@ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, float chromaHShift, float chromaVShift, int verbose) { - SwsFilter *filter= av_malloc(sizeof(SwsFilter)); + SwsFilter *filter = av_malloc(sizeof(SwsFilter)); if (!filter) return NULL; - if (lumaGBlur!=0.0) { - filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0); - filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0); + if (lumaGBlur != 0.0) { + filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0); + filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0); } else { - filter->lumH= sws_getIdentityVec(); - filter->lumV= sws_getIdentityVec(); + filter->lumH = sws_getIdentityVec(); + filter->lumV = sws_getIdentityVec(); } - if (chromaGBlur!=0.0) { - filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0); - filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0); + if (chromaGBlur != 0.0) { + filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0); + filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0); } else { - filter->chrH= sws_getIdentityVec(); - filter->chrV= sws_getIdentityVec(); + filter->chrH = sws_getIdentityVec(); + filter->chrV = sws_getIdentityVec(); } - if (chromaSharpen!=0.0) { - SwsVector *id= sws_getIdentityVec(); + if (chromaSharpen != 0.0) { + SwsVector *id = sws_getIdentityVec(); sws_scaleVec(filter->chrH, -chromaSharpen); sws_scaleVec(filter->chrV, -chromaSharpen); sws_addVec(filter->chrH, id); @@ -1172,8 +1305,8 @@ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, sws_freeVec(id); } - if (lumaSharpen!=0.0) { - SwsVector *id= sws_getIdentityVec(); + if (lumaSharpen != 0.0) { + SwsVector *id = sws_getIdentityVec(); sws_scaleVec(filter->lumH, -lumaSharpen); sws_scaleVec(filter->lumV, -lumaSharpen); sws_addVec(filter->lumH, id); @@ -1182,18 +1315,20 @@ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, } if (chromaHShift != 0.0) - sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5)); + sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5)); if (chromaVShift != 0.0) - sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5)); + sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5)); sws_normalizeVec(filter->chrH, 1.0); sws_normalizeVec(filter->chrV, 1.0); sws_normalizeVec(filter->lumH, 1.0); sws_normalizeVec(filter->lumV, 1.0); - if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG); - if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG); + if (verbose) + sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG); + if (verbose) + sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG); return filter; } @@ -1212,17 +1347,18 @@ SwsVector *sws_allocVec(int length) SwsVector *sws_getGaussianVec(double variance, double quality) { - const int length= (int)(variance*quality + 0.5) | 1; + const int length = (int)(variance * quality + 0.5) | 1; int i; - double middle= (length-1)*0.5; - SwsVector *vec= sws_allocVec(length); + double middle = (length - 1) * 0.5; + SwsVector *vec = sws_allocVec(length); if (!vec) return NULL; - for (i=0; i<length; i++) { - double dist= i-middle; - vec->coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*M_PI); + for (i = 0; i < length; i++) { + double dist = i - middle; + vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) / + sqrt(2 * variance * M_PI); } sws_normalizeVec(vec, 1.0); @@ -1233,13 +1369,13 @@ SwsVector *sws_getGaussianVec(double variance, double quality) SwsVector *sws_getConstVec(double c, int length) { int i; - SwsVector *vec= sws_allocVec(length); + SwsVector *vec = sws_allocVec(length); if (!vec) return NULL; - for (i=0; i<length; i++) - vec->coeff[i]= c; + for (i = 0; i < length; i++) + vec->coeff[i] = c; return vec; } @@ -1252,10 +1388,10 @@ SwsVector *sws_getIdentityVec(void) static double sws_dcVec(SwsVector *a) { int i; - double sum=0; + double sum = 0; - for (i=0; i<a->length; i++) - sum+= a->coeff[i]; + for (i = 0; i < a->length; i++) + sum += a->coeff[i]; return sum; } @@ -1264,27 +1400,27 @@ void sws_scaleVec(SwsVector *a, double scalar) { int i; - for (i=0; i<a->length; i++) - a->coeff[i]*= scalar; + for (i = 0; i < a->length; i++) + a->coeff[i] *= scalar; } void sws_normalizeVec(SwsVector *a, double height) { - sws_scaleVec(a, height/sws_dcVec(a)); + sws_scaleVec(a, height / sws_dcVec(a)); } static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b) { - int length= a->length + b->length - 1; + int length = a->length + b->length - 1; int i, j; - SwsVector *vec= sws_getConstVec(0.0, length); + SwsVector *vec = sws_getConstVec(0.0, length); if (!vec) return NULL; - for (i=0; i<a->length; i++) { - for (j=0; j<b->length; j++) { - vec->coeff[i+j]+= a->coeff[i]*b->coeff[j]; + for (i = 0; i < a->length; i++) { + for (j = 0; j < b->length; j++) { + vec->coeff[i + j] += a->coeff[i] * b->coeff[j]; } } @@ -1293,30 +1429,34 @@ static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b) static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b) { - int length= FFMAX(a->length, b->length); + int length = FFMAX(a->length, b->length); int i; - SwsVector *vec= sws_getConstVec(0.0, length); + SwsVector *vec = sws_getConstVec(0.0, length); if (!vec) return NULL; - for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i]; - for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i]; + for (i = 0; i < a->length; i++) + vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i]; + for (i = 0; i < b->length; i++) + vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i]; return vec; } static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b) { - int length= FFMAX(a->length, b->length); + int length = FFMAX(a->length, b->length); int i; - SwsVector *vec= sws_getConstVec(0.0, length); + SwsVector *vec = sws_getConstVec(0.0, length); if (!vec) return NULL; - for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i]; - for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i]; + for (i = 0; i < a->length; i++) + vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i]; + for (i = 0; i < b->length; i++) + vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] -= b->coeff[i]; return vec; } @@ -1324,15 +1464,16 @@ static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b) /* shift left / or right if "shift" is negative */ static SwsVector *sws_getShiftedVec(SwsVector *a, int shift) { - int length= a->length + FFABS(shift)*2; + int length = a->length + FFABS(shift) * 2; int i; - SwsVector *vec= sws_getConstVec(0.0, length); + SwsVector *vec = sws_getConstVec(0.0, length); if (!vec) return NULL; - for (i=0; i<a->length; i++) { - vec->coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i]; + for (i = 0; i < a->length; i++) { + vec->coeff[i + (length - 1) / 2 - + (a->length - 1) / 2 - shift] = a->coeff[i]; } return vec; @@ -1340,49 +1481,50 @@ static SwsVector *sws_getShiftedVec(SwsVector *a, int shift) void sws_shiftVec(SwsVector *a, int shift) { - SwsVector *shifted= sws_getShiftedVec(a, shift); + SwsVector *shifted = sws_getShiftedVec(a, shift); av_free(a->coeff); - a->coeff= shifted->coeff; - a->length= shifted->length; + a->coeff = shifted->coeff; + a->length = shifted->length; av_free(shifted); } void sws_addVec(SwsVector *a, SwsVector *b) { - SwsVector *sum= sws_sumVec(a, b); + SwsVector *sum = sws_sumVec(a, b); av_free(a->coeff); - a->coeff= sum->coeff; - a->length= sum->length; + a->coeff = sum->coeff; + a->length = sum->length; av_free(sum); } void sws_subVec(SwsVector *a, SwsVector *b) { - SwsVector *diff= sws_diffVec(a, b); + SwsVector *diff = sws_diffVec(a, b); av_free(a->coeff); - a->coeff= diff->coeff; - a->length= diff->length; + a->coeff = diff->coeff; + a->length = diff->length; av_free(diff); } void sws_convVec(SwsVector *a, SwsVector *b) { - SwsVector *conv= sws_getConvVec(a, b); + SwsVector *conv = sws_getConvVec(a, b); av_free(a->coeff); - a->coeff= conv->coeff; - a->length= conv->length; + a->coeff = conv->coeff; + a->length = conv->length; av_free(conv); } SwsVector *sws_cloneVec(SwsVector *a) { int i; - SwsVector *vec= sws_allocVec(a->length); + SwsVector *vec = sws_allocVec(a->length); if (!vec) return NULL; - for (i=0; i<a->length; i++) vec->coeff[i]= a->coeff[i]; + for (i = 0; i < a->length; i++) + vec->coeff[i] = a->coeff[i]; return vec; } @@ -1390,65 +1532,75 @@ SwsVector *sws_cloneVec(SwsVector *a) void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level) { int i; - double max=0; - double min=0; + double max = 0; + double min = 0; double range; - for (i=0; i<a->length; i++) - if (a->coeff[i]>max) max= a->coeff[i]; + for (i = 0; i < a->length; i++) + if (a->coeff[i] > max) + max = a->coeff[i]; - for (i=0; i<a->length; i++) - if (a->coeff[i]<min) min= a->coeff[i]; + for (i = 0; i < a->length; i++) + if (a->coeff[i] < min) + min = a->coeff[i]; - range= max - min; + range = max - min; - for (i=0; i<a->length; i++) { - int x= (int)((a->coeff[i]-min)*60.0/range +0.5); + for (i = 0; i < a->length; i++) { + int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5); av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]); - for (;x>0; x--) av_log(log_ctx, log_level, " "); + for (; x > 0; x--) + av_log(log_ctx, log_level, " "); av_log(log_ctx, log_level, "|\n"); } } void sws_freeVec(SwsVector *a) { - if (!a) return; + if (!a) + return; av_freep(&a->coeff); - a->length=0; + a->length = 0; av_free(a); } void sws_freeFilter(SwsFilter *filter) { - if (!filter) return; - - if (filter->lumH) sws_freeVec(filter->lumH); - if (filter->lumV) sws_freeVec(filter->lumV); - if (filter->chrH) sws_freeVec(filter->chrH); - if (filter->chrV) sws_freeVec(filter->chrV); + if (!filter) + return; + + if (filter->lumH) + sws_freeVec(filter->lumH); + if (filter->lumV) + sws_freeVec(filter->lumV); + if (filter->chrH) + sws_freeVec(filter->chrH); + if (filter->chrV) + sws_freeVec(filter->chrV); av_free(filter); } void sws_freeContext(SwsContext *c) { int i; - if (!c) return; + if (!c) + return; if (c->lumPixBuf) { - for (i=0; i<c->vLumBufSize; i++) + for (i = 0; i < c->vLumBufSize; i++) av_freep(&c->lumPixBuf[i]); av_freep(&c->lumPixBuf); } if (c->chrUPixBuf) { - for (i=0; i<c->vChrBufSize; i++) + for (i = 0; i < c->vChrBufSize; i++) av_freep(&c->chrUPixBuf[i]); av_freep(&c->chrUPixBuf); av_freep(&c->chrVPixBuf); } if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) { - for (i=0; i<c->vLumBufSize; i++) + for (i = 0; i < c->vLumBufSize; i++) av_freep(&c->alpPixBuf[i]); av_freep(&c->alpPixBuf); } @@ -1469,17 +1621,21 @@ void sws_freeContext(SwsContext *c) #if HAVE_MMX #ifdef MAP_ANONYMOUS - if (c->lumMmx2FilterCode) munmap(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize); - if (c->chrMmx2FilterCode) munmap(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize); + if (c->lumMmx2FilterCode) + munmap(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize); + if (c->chrMmx2FilterCode) + munmap(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize); #elif HAVE_VIRTUALALLOC - if (c->lumMmx2FilterCode) VirtualFree(c->lumMmx2FilterCode, 0, MEM_RELEASE); - if (c->chrMmx2FilterCode) VirtualFree(c->chrMmx2FilterCode, 0, MEM_RELEASE); + if (c->lumMmx2FilterCode) + VirtualFree(c->lumMmx2FilterCode, 0, MEM_RELEASE); + if (c->chrMmx2FilterCode) + VirtualFree(c->chrMmx2FilterCode, 0, MEM_RELEASE); #else av_free(c->lumMmx2FilterCode); av_free(c->chrMmx2FilterCode); #endif - c->lumMmx2FilterCode=NULL; - c->chrMmx2FilterCode=NULL; + c->lumMmx2FilterCode = NULL; + c->chrMmx2FilterCode = NULL; #endif /* HAVE_MMX */ av_freep(&c->yuvTable); @@ -1488,12 +1644,16 @@ void sws_freeContext(SwsContext *c) av_free(c); } -struct SwsContext *sws_getCachedContext(struct SwsContext *context, - int srcW, int srcH, enum PixelFormat srcFormat, - int dstW, int dstH, enum PixelFormat dstFormat, int flags, - SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param) +struct SwsContext *sws_getCachedContext(struct SwsContext *context, int srcW, + int srcH, enum PixelFormat srcFormat, + int dstW, int dstH, + enum PixelFormat dstFormat, int flags, + SwsFilter *srcFilter, + SwsFilter *dstFilter, + const double *param) { - static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT}; + static const double default_param[2] = { SWS_PARAM_DEFAULT, + SWS_PARAM_DEFAULT }; if (!param) param = default_param; @@ -1526,7 +1686,10 @@ struct SwsContext *sws_getCachedContext(struct SwsContext *context, context->flags = flags; context->param[0] = param[0]; context->param[1] = param[1]; - sws_setColorspaceDetails(context, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], context->srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, context->dstRange, 0, 1<<16, 1<<16); + sws_setColorspaceDetails(context, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], + context->srcRange, + ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, + context->dstRange, 0, 1 << 16, 1 << 16); if (sws_init_context(context, srcFilter, dstFilter) < 0) { sws_freeContext(context); return NULL; |