struct SwsContext;
-typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[],
+typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t* src[],
int srcStride[], int srcSliceY, int srcSliceH,
uint8_t* dst[], int dstStride[]);
/* 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 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 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;
+ /**
+ * @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 **chrPixBuf; ///< 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[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 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;
DECLARE_ALIGNED(8, uint64_t, vOffset);
int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
- int dstW;
+ 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);
int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
#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;
+ 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
#endif
#if HAVE_VIS
- DECLARE_ALIGNED(8, uint64_t, sparc_coeffs[10]);
+ DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
#endif
/* function pointers for swScale() */
const int16_t **alpSrc, uint8_t *dest,
long dstW, long dstY);
- void (*hyscale_internal)(uint8_t *dst, const uint8_t *src,
- long width, uint32_t *pal);
- void (*hascale_internal)(uint8_t *dst, const uint8_t *src,
- long width, uint32_t *pal);
- void (*hcscale_internal)(uint8_t *dstU, uint8_t *dstV,
- const uint8_t *src1, const uint8_t *src2,
- long width, uint32_t *pal);
+ void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
+ long width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
+ void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
+ long 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,
+ long width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
void (*hyscale_fast)(struct SwsContext *c,
- int16_t *dst, int dstWidth,
+ int16_t *dst, long dstWidth,
const uint8_t *src, int srcW, int xInc);
void (*hcscale_fast)(struct SwsContext *c,
- int16_t *dst, int dstWidth,
+ int16_t *dst, long dstWidth,
const uint8_t *src1, const uint8_t *src2,
int srcW, int xInc);
int xInc, const int16_t *filter, const int16_t *filterPos,
long filterSize);
+ void (*lumConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
+ void (*chrConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for chroma planes if needed.
+
+ int lumSrcOffset; ///< Offset given to luma src pointers passed to horizontal input functions.
+ int chrSrcOffset; ///< Offset given to chroma src pointers passed to horizontal input functions.
+ int alpSrcOffset; ///< Offset given to alpha src pointers passed to horizontal input functions.
+
+ int needs_hcscale; ///< Set if there are chroma planes to be converted.
+
} SwsContext;
//FIXME check init (where 0)
|| (x)==PIX_FMT_GRAY16LE \
|| (x)==PIX_FMT_RGB48BE \
|| (x)==PIX_FMT_RGB48LE \
- || (x)==PIX_FMT_YUV420PLE \
- || (x)==PIX_FMT_YUV422PLE \
- || (x)==PIX_FMT_YUV444PLE \
- || (x)==PIX_FMT_YUV420PBE \
- || (x)==PIX_FMT_YUV422PBE \
- || (x)==PIX_FMT_YUV444PBE \
+ || (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 isBE(x) ((x)&1)
#define isPlanar8YUV(x) ( \
)
#define isPlanarYUV(x) ( \
isPlanar8YUV(x) \
- || (x)==PIX_FMT_YUV420PLE \
- || (x)==PIX_FMT_YUV422PLE \
- || (x)==PIX_FMT_YUV444PLE \
- || (x)==PIX_FMT_YUV420PBE \
- || (x)==PIX_FMT_YUV422PBE \
- || (x)==PIX_FMT_YUV444PBE \
+ || (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 isYUV(x) ( \
(x)==PIX_FMT_UYVY422 \
(x)==PIX_FMT_GRAY16BE \
|| (x)==PIX_FMT_GRAY16LE \
)
-#define isRGB(x) ( \
+#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) ( \
+#define isBGRinInt(x) ( \
(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_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_1 \
|| (x)==PIX_FMT_YUVA420P \
)
-
-static inline int fmt_depth(int fmt)
-{
- switch(fmt) {
- case PIX_FMT_RGB48BE:
- case PIX_FMT_RGB48LE:
- return 48;
- 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 usePal(x) (av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL)
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);
+
+/**
+ * Returns the SWS_CPU_CAPS for the optimized code compiled into swscale.
+ */
+int ff_hardcodedcpuflags(void);
+
+/**
+ * Returns function pointer to fastest main scaler path function depending
+ * on architecture and available optimizations.
+ */
+SwsFunc ff_getSwsFunc(SwsContext *c);
+
#endif /* SWSCALE_SWSCALE_INTERNAL_H */
projects / ffmpeg / blobdiff