/*
* Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#endif
#include "libavutil/avutil.h"
+#include "libavutil/log.h"
+#include "libavutil/pixfmt.h"
#define STR(s) AV_TOSTRING(s) //AV_STRINGIFY is too long
-#define MAX_FILTER_SIZE 256
+#define FAST_BGR2YV12 //use 7-bit instead of 15-bit coefficients
-#define VOFW 2048
-#define VOF (VOFW*2)
+#define MAX_FILTER_SIZE 256
-#ifdef WORDS_BIGENDIAN
+#if HAVE_BIGENDIAN
#define ALT32_CORR (-1)
#else
#define ALT32_CORR 1
struct SwsContext;
-typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]);
+typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t* src[],
+ int srcStride[], int srcSliceY, int srcSliceH,
+ uint8_t* dst[], int dstStride[]);
+
+/**
+ * Write one line of horizontally scaled Y/U/V/A to planar output
+ * without any additional vertical scaling (or point-scaling).
+ *
+ * @param c SWS scaling context
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
+ * @param dest pointer to the 4 output planes (Y/U/V/A)
+ * @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
+ * @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
+ */
+typedef void (*yuv2planar1_fn) (struct SwsContext *c,
+ const int16_t *lumSrc, const int16_t *chrUSrc,
+ const int16_t *chrVSrc, const int16_t *alpSrc,
+ uint8_t *dest[4], int dstW, int chrDstW);
+/**
+ * Write one line of horizontally scaled Y/U/V/A to planar output
+ * with multi-point vertical scaling between input pixels.
+ *
+ * @param c SWS scaling context
+ * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
+ * @param lumFilterSize number of vertical luma/alpha input lines to scale
+ * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
+ * @param chrFilterSize number of vertical chroma input lines to scale
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
+ * @param dest pointer to the 4 output planes (Y/U/V/A)
+ * @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
+ * @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
+ */
+typedef void (*yuv2planarX_fn) (struct SwsContext *c, const int16_t *lumFilter,
+ const int16_t **lumSrc, int lumFilterSize,
+ const int16_t *chrFilter, const int16_t **chrUSrc,
+ const int16_t **chrVSrc, int chrFilterSize,
+ const int16_t **alpSrc, uint8_t *dest[4],
+ int dstW, int chrDstW);
+/**
+ * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
+ * output without any additional vertical scaling (or point-scaling). Note
+ * that this function may do chroma scaling, see the "uvalpha" argument.
+ *
+ * @param c SWS scaling context
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
+ * @param dest pointer to the output plane
+ * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
+ * to write into dest[]
+ * @param uvalpha chroma scaling coefficient for the second line of chroma
+ * pixels, either 2048 or 0. If 0, one chroma input is used
+ * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
+ * is set, it generates 1 output pixel). If 2048, two chroma
+ * input pixels should be averaged for 2 output pixels (this
+ * only happens if SWS_FLAG_FULL_CHR_INT is not set)
+ * @param y vertical line number for this output. This does not need
+ * to be used to calculate the offset in the destination,
+ * but can be used to generate comfort noise using dithering
+ * for some output formats.
+ */
+typedef void (*yuv2packed1_fn) (struct SwsContext *c, const int16_t *lumSrc,
+ const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
+ const int16_t *alpSrc, uint8_t *dest,
+ int dstW, int uvalpha, int y);
+/**
+ * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
+ * output by doing bilinear scaling between two input lines.
+ *
+ * @param c SWS scaling context
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
+ * @param dest pointer to the output plane
+ * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
+ * to write into dest[]
+ * @param yalpha luma/alpha scaling coefficients for the second input line.
+ * The first line's coefficients can be calculated by using
+ * 4096 - yalpha
+ * @param uvalpha chroma scaling coefficient for the second input line. The
+ * first line's coefficients can be calculated by using
+ * 4096 - uvalpha
+ * @param y vertical line number for this output. This does not need
+ * to be used to calculate the offset in the destination,
+ * but can be used to generate comfort noise using dithering
+ * for some output formats.
+ */
+typedef void (*yuv2packed2_fn) (struct SwsContext *c, const int16_t *lumSrc[2],
+ const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
+ const int16_t *alpSrc[2], uint8_t *dest,
+ int dstW, int yalpha, int uvalpha, int y);
+/**
+ * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
+ * output by doing multi-point vertical scaling between input pixels.
+ *
+ * @param c SWS scaling context
+ * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
+ * @param lumFilterSize number of vertical luma/alpha input lines to scale
+ * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
+ * @param chrFilterSize number of vertical chroma input lines to scale
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
+ * @param dest pointer to the output plane
+ * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
+ * to write into dest[]
+ * @param y vertical line number for this output. This does not need
+ * to be used to calculate the offset in the destination,
+ * but can be used to generate comfort noise using dithering
+ * or some output formats.
+ */
+typedef void (*yuv2packedX_fn) (struct SwsContext *c, const int16_t *lumFilter,
+ const int16_t **lumSrc, int lumFilterSize,
+ const int16_t *chrFilter, const int16_t **chrUSrc,
+ const int16_t **chrVSrc, int chrFilterSize,
+ const int16_t **alpSrc, uint8_t *dest,
+ int dstW, int y);
/* This struct should be aligned on at least a 32-byte boundary. */
-typedef struct SwsContext{
+typedef struct SwsContext {
/**
* info on struct for av_log
*/
* sws_scale() wrapper so they can be freely modified here.
*/
SwsFunc swScale;
- int srcW, srcH, dstH;
- int chrSrcW, chrSrcH, chrDstW, chrDstH;
+ int srcW; ///< Width of source luma/alpha planes.
+ int srcH; ///< Height of source luma/alpha planes.
+ int dstH; ///< Height of destination luma/alpha planes.
+ int chrSrcW; ///< Width of source chroma planes.
+ int chrSrcH; ///< Height of source chroma planes.
+ int chrDstW; ///< Width of destination chroma planes.
+ int chrDstH; ///< Height of destination chroma planes.
int lumXInc, chrXInc;
int lumYInc, chrYInc;
- enum PixelFormat dstFormat, srcFormat; ///< format 4:2:0 type is always YV12
- int origDstFormat, origSrcFormat; ///< format
- int chrSrcHSubSample, chrSrcVSubSample;
- int chrIntHSubSample, chrIntVSubSample;
- int chrDstHSubSample, chrDstVSubSample;
- int vChrDrop;
- int sliceDir;
- double param[2];
+ enum PixelFormat dstFormat; ///< Destination pixel format.
+ enum PixelFormat srcFormat; ///< Source pixel format.
+ int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
+ int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
+ int scalingBpp;
+ int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
+ int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
+ int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
+ int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
+ int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
+ int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
+ double param[2]; ///< Input parameters for scaling algorithms that need them.
uint32_t pal_yuv[256];
uint32_t pal_rgb[256];
- int16_t **lumPixBuf;
- int16_t **chrPixBuf;
- int16_t **alpPixBuf;
- int16_t *hLumFilter;
- int16_t *hLumFilterPos;
- int16_t *hChrFilter;
- int16_t *hChrFilterPos;
- int16_t *vLumFilter;
- int16_t *vLumFilterPos;
- int16_t *vChrFilter;
- int16_t *vChrFilterPos;
-
- uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
-
- int hLumFilterSize;
- int hChrFilterSize;
- int vLumFilterSize;
- int vChrFilterSize;
- int vLumBufSize;
- int vChrBufSize;
-
- uint8_t *funnyYCode;
- uint8_t *funnyUVCode;
- int32_t *lumMmx2FilterPos;
- int32_t *chrMmx2FilterPos;
- int16_t *lumMmx2Filter;
- int16_t *chrMmx2Filter;
+ /**
+ * @name Scaled horizontal lines ring buffer.
+ * The horizontal scaler keeps just enough scaled lines in a ring buffer
+ * so they may be passed to the vertical scaler. The pointers to the
+ * allocated buffers for each line are duplicated in sequence in the ring
+ * buffer to simplify indexing and avoid wrapping around between lines
+ * inside the vertical scaler code. The wrapping is done before the
+ * vertical scaler is called.
+ */
+ //@{
+ int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
+ int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
+ int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
+ int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
+ int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
+ int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
+ int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
+ int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
+ int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
+ int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
+ //@}
+
+ uint8_t *formatConvBuffer;
+
+ /**
+ * @name Horizontal and vertical filters.
+ * To better understand the following fields, here is a pseudo-code of
+ * their usage in filtering a horizontal line:
+ * @code
+ * for (i = 0; i < width; i++) {
+ * dst[i] = 0;
+ * for (j = 0; j < filterSize; j++)
+ * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
+ * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
+ * }
+ * @endcode
+ */
+ //@{
+ int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
+ int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
+ int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
+ int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
+ int16_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
+ int16_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
+ int16_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
+ int16_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
+ int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
+ int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
+ int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
+ int vChrFilterSize; ///< Vertical filter size for chroma pixels.
+ //@}
+
+ int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
+ int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
+ uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
+ uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
int canMMX2BeUsed;
- int lastInLumBuf;
- int lastInChrBuf;
- int lumBufIndex;
- int chrBufIndex;
- int dstY;
- int flags;
+ int dstY; ///< Last destination vertical line output from last slice.
+ int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
uint8_t * table_rV[256];
uint8_t * table_gU[256];
int contrast, brightness, saturation; // for sws_getColorspaceDetails
int srcColorspaceTable[4];
int dstColorspaceTable[4];
- int srcRange, dstRange;
+ int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
+ int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
int yuv2rgb_y_offset;
int yuv2rgb_y_coeff;
int yuv2rgb_v2r_coeff;
#define V_TEMP "11*8+4*4*256*2+32"
#define Y_TEMP "11*8+4*4*256*2+40"
#define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
-
- uint64_t redDither __attribute__((aligned(8)));
- uint64_t greenDither __attribute__((aligned(8)));
- uint64_t blueDither __attribute__((aligned(8)));
-
- uint64_t yCoeff __attribute__((aligned(8)));
- uint64_t vrCoeff __attribute__((aligned(8)));
- uint64_t ubCoeff __attribute__((aligned(8)));
- uint64_t vgCoeff __attribute__((aligned(8)));
- uint64_t ugCoeff __attribute__((aligned(8)));
- uint64_t yOffset __attribute__((aligned(8)));
- uint64_t uOffset __attribute__((aligned(8)));
- uint64_t vOffset __attribute__((aligned(8)));
+#define UV_OFF_PX "11*8+4*4*256*3+48"
+#define UV_OFF_BYTE "11*8+4*4*256*3+56"
+#define DITHER16 "11*8+4*4*256*3+64"
+#define DITHER32 "11*8+4*4*256*3+80"
+
+ DECLARE_ALIGNED(8, uint64_t, redDither);
+ DECLARE_ALIGNED(8, uint64_t, greenDither);
+ DECLARE_ALIGNED(8, uint64_t, blueDither);
+
+ DECLARE_ALIGNED(8, uint64_t, yCoeff);
+ DECLARE_ALIGNED(8, uint64_t, vrCoeff);
+ DECLARE_ALIGNED(8, uint64_t, ubCoeff);
+ DECLARE_ALIGNED(8, uint64_t, vgCoeff);
+ DECLARE_ALIGNED(8, uint64_t, ugCoeff);
+ DECLARE_ALIGNED(8, uint64_t, yOffset);
+ DECLARE_ALIGNED(8, uint64_t, uOffset);
+ DECLARE_ALIGNED(8, uint64_t, vOffset);
int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
- int dstW;
- uint64_t esp __attribute__((aligned(8)));
- uint64_t vRounder __attribute__((aligned(8)));
- uint64_t u_temp __attribute__((aligned(8)));
- uint64_t v_temp __attribute__((aligned(8)));
- uint64_t y_temp __attribute__((aligned(8)));
+ int dstW; ///< Width of destination luma/alpha planes.
+ DECLARE_ALIGNED(8, uint64_t, esp);
+ DECLARE_ALIGNED(8, uint64_t, vRounder);
+ DECLARE_ALIGNED(8, uint64_t, u_temp);
+ DECLARE_ALIGNED(8, uint64_t, v_temp);
+ DECLARE_ALIGNED(8, uint64_t, y_temp);
int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
+ // alignment of these values is not necessary, but merely here
+ // to maintain the same offset across x8632 and x86-64. Once we
+ // use proper offset macros in the asm, they can be removed.
+ DECLARE_ALIGNED(8, ptrdiff_t, uv_off_px); ///< offset (in pixels) between u and v planes
+ DECLARE_ALIGNED(8, ptrdiff_t, uv_off_byte); ///< offset (in bytes) between u and v planes
+ DECLARE_ALIGNED(8, uint16_t, dither16)[8];
+ DECLARE_ALIGNED(8, uint32_t, dither32)[8];
-#if HAVE_ALTIVEC
-
- vector signed short CY;
- vector signed short CRV;
- vector signed short CBU;
- vector signed short CGU;
- vector signed short CGV;
- vector signed short OY;
- vector unsigned short CSHIFT;
- vector signed short *vYCoeffsBank, *vCCoeffsBank;
+ const uint8_t *chrDither8, *lumDither8;
+#if HAVE_ALTIVEC
+ vector signed short CY;
+ vector signed short CRV;
+ vector signed short CBU;
+ vector signed short CGU;
+ vector signed short CGV;
+ vector signed short OY;
+ vector unsigned short CSHIFT;
+ vector signed short *vYCoeffsBank, *vCCoeffsBank;
#endif
-
#if ARCH_BFIN
- uint32_t oy __attribute__((aligned(4)));
- uint32_t oc __attribute__((aligned(4)));
- uint32_t zero __attribute__((aligned(4)));
- uint32_t cy __attribute__((aligned(4)));
- uint32_t crv __attribute__((aligned(4)));
- uint32_t rmask __attribute__((aligned(4)));
- uint32_t cbu __attribute__((aligned(4)));
- uint32_t bmask __attribute__((aligned(4)));
- uint32_t cgu __attribute__((aligned(4)));
- uint32_t cgv __attribute__((aligned(4)));
- uint32_t gmask __attribute__((aligned(4)));
+ DECLARE_ALIGNED(4, uint32_t, oy);
+ DECLARE_ALIGNED(4, uint32_t, oc);
+ DECLARE_ALIGNED(4, uint32_t, zero);
+ DECLARE_ALIGNED(4, uint32_t, cy);
+ DECLARE_ALIGNED(4, uint32_t, crv);
+ DECLARE_ALIGNED(4, uint32_t, rmask);
+ DECLARE_ALIGNED(4, uint32_t, cbu);
+ DECLARE_ALIGNED(4, uint32_t, bmask);
+ DECLARE_ALIGNED(4, uint32_t, cgu);
+ DECLARE_ALIGNED(4, uint32_t, cgv);
+ DECLARE_ALIGNED(4, uint32_t, gmask);
#endif
#if HAVE_VIS
- uint64_t sparc_coeffs[10] __attribute__((aligned(8)));
+ DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
#endif
+ /* function pointers for swScale() */
+ yuv2planar1_fn yuv2yuv1;
+ yuv2planarX_fn yuv2yuvX;
+ yuv2packed1_fn yuv2packed1;
+ yuv2packed2_fn yuv2packed2;
+ yuv2packedX_fn yuv2packedX;
+
+ void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
+ int width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
+ void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
+ int width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
+ void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
+ const uint8_t *src1, const uint8_t *src2,
+ int width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
+ /**
+ * Scale one horizontal line of input data using a bilinear filter
+ * to produce one line of output data. Compared to SwsContext->hScale(),
+ * please take note of the following caveats when using these:
+ * - Scaling is done using only 7bit instead of 14bit coefficients.
+ * - You can use no more than 5 input pixels to produce 4 output
+ * pixels. Therefore, this filter should not be used for downscaling
+ * by more than ~20% in width (because that equals more than 5/4th
+ * downscaling and thus more than 5 pixels input per 4 pixels output).
+ * - In general, bilinear filters create artifacts during downscaling
+ * (even when <20%), because one output pixel will span more than one
+ * input pixel, and thus some pixels will need edges of both neighbor
+ * pixels to interpolate the output pixel. Since you can use at most
+ * two input pixels per output pixel in bilinear scaling, this is
+ * impossible and thus downscaling by any size will create artifacts.
+ * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
+ * in SwsContext->flags.
+ */
+ /** @{ */
+ void (*hyscale_fast)(struct SwsContext *c,
+ int16_t *dst, int dstWidth,
+ const uint8_t *src, int srcW, int xInc);
+ void (*hcscale_fast)(struct SwsContext *c,
+ int16_t *dst1, int16_t *dst2, int dstWidth,
+ const uint8_t *src1, const uint8_t *src2,
+ int srcW, int xInc);
+ /** @} */
+
+ /**
+ * Scale one horizontal line of input data using a filter over the input
+ * lines, to produce one (differently sized) line of output data.
+ *
+ * @param dst pointer to destination buffer for horizontally scaled
+ * data. If the scaling depth (SwsContext->scalingBpp) is
+ * 8, data will be 15bpp in 16bits (int16_t) width. If
+ * scaling depth is 16, data will be 19bpp in 32bpp
+ * (int32_t) width.
+ * @param dstW width of destination image
+ * @param src pointer to source data to be scaled. If scaling depth
+ * is 8, this is 8bpp in 8bpp (uint8_t) width. If scaling
+ * depth is 16, this is native depth in 16bbp (uint16_t)
+ * width. In other words, for 9-bit YUV input, this is
+ * 9bpp, for 10-bit YUV input, this is 10bpp, and for
+ * 16-bit RGB or YUV, this is 16bpp.
+ * @param filter filter coefficients to be used per output pixel for
+ * scaling. This contains 14bpp filtering coefficients.
+ * Guaranteed to contain dstW * filterSize entries.
+ * @param filterPos position of the first input pixel to be used for
+ * each output pixel during scaling. Guaranteed to
+ * contain dstW entries.
+ * @param filterSize the number of input coefficients to be used (and
+ * thus the number of input pixels to be used) for
+ * creating a single output pixel. Is aligned to 4
+ * (and input coefficients thus padded with zeroes)
+ * to simplify creating SIMD code.
+ */
+ void (*hScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
+ const int16_t *filter, const int16_t *filterPos,
+ int filterSize);
+
+ void (*lumConvertRange)(int16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
+ void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width); ///< Color range conversion function for chroma planes if needed.
+
+ /**
+ * dst[..] = (src[..] << 8) | src[..];
+ */
+ void (*scale8To16Rv)(uint16_t *dst, const uint8_t *src, int len);
+ /**
+ * dst[..] = src[..] >> 4;
+ */
+ void (*scale19To15Fw)(int16_t *dst, const int32_t *src, int len);
+
+ int needs_hcscale; ///< Set if there are chroma planes to be converted.
+
} SwsContext;
//FIXME check init (where 0)
SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
-int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
+int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
+ int fullRange, int brightness,
+ int contrast, int saturation);
+
+void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
+ int brightness, int contrast, int saturation);
+void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
+ int lastInLumBuf, int lastInChrBuf);
-void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation);
SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
-void ff_yuv2packedX_altivec(SwsContext *c,
- int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
- int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
- uint8_t *dest, int dstW, int dstY);
+void ff_bfin_get_unscaled_swscale(SwsContext *c);
-const char *sws_format_name(int format);
+const char *sws_format_name(enum PixelFormat format);
//FIXME replace this with something faster
-#define isPlanarYUV(x) ( \
+#define is16BPS(x) ( \
+ (x)==PIX_FMT_GRAY16BE \
+ || (x)==PIX_FMT_GRAY16LE \
+ || (x)==PIX_FMT_BGR48BE \
+ || (x)==PIX_FMT_BGR48LE \
+ || (x)==PIX_FMT_RGB48BE \
+ || (x)==PIX_FMT_RGB48LE \
+ || (x)==PIX_FMT_YUV420P16LE \
+ || (x)==PIX_FMT_YUV422P16LE \
+ || (x)==PIX_FMT_YUV444P16LE \
+ || (x)==PIX_FMT_YUV420P16BE \
+ || (x)==PIX_FMT_YUV422P16BE \
+ || (x)==PIX_FMT_YUV444P16BE \
+ )
+#define is9_OR_10BPS(x) ( \
+ (x)==PIX_FMT_YUV420P9LE \
+ || (x)==PIX_FMT_YUV420P9BE \
+ || (x)==PIX_FMT_YUV444P9BE \
+ || (x)==PIX_FMT_YUV444P9LE \
+ || (x)==PIX_FMT_YUV422P10BE \
+ || (x)==PIX_FMT_YUV422P10LE \
+ || (x)==PIX_FMT_YUV444P10BE \
+ || (x)==PIX_FMT_YUV444P10LE \
+ || (x)==PIX_FMT_YUV420P10LE \
+ || (x)==PIX_FMT_YUV420P10BE \
+ )
+#define isBE(x) ((x)&1)
+#define isPlanar8YUV(x) ( \
(x)==PIX_FMT_YUV410P \
|| (x)==PIX_FMT_YUV420P \
|| (x)==PIX_FMT_YUVA420P \
|| (x)==PIX_FMT_NV12 \
|| (x)==PIX_FMT_NV21 \
)
+#define isPlanarYUV(x) ( \
+ isPlanar8YUV(x) \
+ || (x)==PIX_FMT_YUV420P9LE \
+ || (x)==PIX_FMT_YUV444P9LE \
+ || (x)==PIX_FMT_YUV420P10LE \
+ || (x)==PIX_FMT_YUV422P10LE \
+ || (x)==PIX_FMT_YUV444P10LE \
+ || (x)==PIX_FMT_YUV420P16LE \
+ || (x)==PIX_FMT_YUV422P16LE \
+ || (x)==PIX_FMT_YUV444P16LE \
+ || (x)==PIX_FMT_YUV420P9BE \
+ || (x)==PIX_FMT_YUV444P9BE \
+ || (x)==PIX_FMT_YUV420P10BE \
+ || (x)==PIX_FMT_YUV422P10BE \
+ || (x)==PIX_FMT_YUV444P10BE \
+ || (x)==PIX_FMT_YUV420P16BE \
+ || (x)==PIX_FMT_YUV422P16BE \
+ || (x)==PIX_FMT_YUV444P16BE \
+ )
#define isYUV(x) ( \
(x)==PIX_FMT_UYVY422 \
|| (x)==PIX_FMT_YUYV422 \
)
#define isGray(x) ( \
(x)==PIX_FMT_GRAY8 \
+ || (x)==PIX_FMT_Y400A \
|| (x)==PIX_FMT_GRAY16BE \
|| (x)==PIX_FMT_GRAY16LE \
)
(x)==PIX_FMT_GRAY16BE \
|| (x)==PIX_FMT_GRAY16LE \
)
-#define isRGB(x) ( \
- (x)==PIX_FMT_RGB32 \
+#define isRGBinInt(x) ( \
+ (x)==PIX_FMT_RGB48BE \
+ || (x)==PIX_FMT_RGB48LE \
+ || (x)==PIX_FMT_RGB32 \
|| (x)==PIX_FMT_RGB32_1 \
|| (x)==PIX_FMT_RGB24 \
- || (x)==PIX_FMT_RGB565 \
- || (x)==PIX_FMT_RGB555 \
+ || (x)==PIX_FMT_RGB565BE \
+ || (x)==PIX_FMT_RGB565LE \
+ || (x)==PIX_FMT_RGB555BE \
+ || (x)==PIX_FMT_RGB555LE \
+ || (x)==PIX_FMT_RGB444BE \
+ || (x)==PIX_FMT_RGB444LE \
|| (x)==PIX_FMT_RGB8 \
|| (x)==PIX_FMT_RGB4 \
|| (x)==PIX_FMT_RGB4_BYTE \
|| (x)==PIX_FMT_MONOBLACK \
|| (x)==PIX_FMT_MONOWHITE \
)
-#define isBGR(x) ( \
- (x)==PIX_FMT_BGR32 \
+#define isBGRinInt(x) ( \
+ (x)==PIX_FMT_BGR48BE \
+ || (x)==PIX_FMT_BGR48LE \
+ || (x)==PIX_FMT_BGR32 \
|| (x)==PIX_FMT_BGR32_1 \
|| (x)==PIX_FMT_BGR24 \
- || (x)==PIX_FMT_BGR565 \
- || (x)==PIX_FMT_BGR555 \
+ || (x)==PIX_FMT_BGR565BE \
+ || (x)==PIX_FMT_BGR565LE \
+ || (x)==PIX_FMT_BGR555BE \
+ || (x)==PIX_FMT_BGR555LE \
+ || (x)==PIX_FMT_BGR444BE \
+ || (x)==PIX_FMT_BGR444LE \
|| (x)==PIX_FMT_BGR8 \
|| (x)==PIX_FMT_BGR4 \
|| (x)==PIX_FMT_BGR4_BYTE \
|| (x)==PIX_FMT_MONOBLACK \
|| (x)==PIX_FMT_MONOWHITE \
)
+#define isRGBinBytes(x) ( \
+ (x)==PIX_FMT_RGB48BE \
+ || (x)==PIX_FMT_RGB48LE \
+ || (x)==PIX_FMT_RGBA \
+ || (x)==PIX_FMT_ARGB \
+ || (x)==PIX_FMT_RGB24 \
+ )
+#define isBGRinBytes(x) ( \
+ (x)==PIX_FMT_BGR48BE \
+ || (x)==PIX_FMT_BGR48LE \
+ || (x)==PIX_FMT_BGRA \
+ || (x)==PIX_FMT_ABGR \
+ || (x)==PIX_FMT_BGR24 \
+ )
+#define isAnyRGB(x) ( \
+ isRGBinInt(x) \
+ || isBGRinInt(x) \
+ )
#define isALPHA(x) ( \
(x)==PIX_FMT_BGR32 \
|| (x)==PIX_FMT_BGR32_1 \
|| (x)==PIX_FMT_RGB32 \
|| (x)==PIX_FMT_RGB32_1 \
+ || (x)==PIX_FMT_Y400A \
|| (x)==PIX_FMT_YUVA420P \
)
-
-static inline int fmt_depth(int fmt)
-{
- switch(fmt) {
- case PIX_FMT_BGRA:
- case PIX_FMT_ABGR:
- case PIX_FMT_RGBA:
- case PIX_FMT_ARGB:
- return 32;
- case PIX_FMT_BGR24:
- case PIX_FMT_RGB24:
- return 24;
- case PIX_FMT_BGR565:
- case PIX_FMT_RGB565:
- case PIX_FMT_GRAY16BE:
- case PIX_FMT_GRAY16LE:
- return 16;
- case PIX_FMT_BGR555:
- case PIX_FMT_RGB555:
- return 15;
- case PIX_FMT_BGR8:
- case PIX_FMT_RGB8:
- return 8;
- case PIX_FMT_BGR4:
- case PIX_FMT_RGB4:
- case PIX_FMT_BGR4_BYTE:
- case PIX_FMT_RGB4_BYTE:
- return 4;
- case PIX_FMT_MONOBLACK:
- case PIX_FMT_MONOWHITE:
- return 1;
- default:
- return 0;
- }
-}
+#define isPacked(x) ( \
+ (x)==PIX_FMT_PAL8 \
+ || (x)==PIX_FMT_YUYV422 \
+ || (x)==PIX_FMT_UYVY422 \
+ || (x)==PIX_FMT_Y400A \
+ || isAnyRGB(x) \
+ )
+#define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A)
extern const uint64_t ff_dither4[2];
extern const uint64_t ff_dither8[2];
extern const AVClass sws_context_class;
+/**
+ * Sets c->swScale to an unscaled converter if one exists for the specific
+ * source and destination formats, bit depths, flags, etc.
+ */
+void ff_get_unscaled_swscale(SwsContext *c);
+
+void ff_swscale_get_unscaled_altivec(SwsContext *c);
+
+/**
+ * Returns function pointer to fastest main scaler path function depending
+ * on architecture and available optimizations.
+ */
+SwsFunc ff_getSwsFunc(SwsContext *c);
+
+void ff_sws_init_swScale_altivec(SwsContext *c);
+void ff_sws_init_swScale_mmx(SwsContext *c);
+
#endif /* SWSCALE_SWSCALE_INTERNAL_H */
projects / ffmpeg / blobdiff