21 #ifndef SWSCALE_SWSCALE_H
22 #define SWSCALE_SWSCALE_H
34 #define LIBSWSCALE_VERSION_MAJOR 2
35 #define LIBSWSCALE_VERSION_MINOR 1
36 #define LIBSWSCALE_VERSION_MICRO 0
38 #define LIBSWSCALE_VERSION_INT AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \
39 LIBSWSCALE_VERSION_MINOR, \
40 LIBSWSCALE_VERSION_MICRO)
41 #define LIBSWSCALE_VERSION AV_VERSION(LIBSWSCALE_VERSION_MAJOR, \
42 LIBSWSCALE_VERSION_MINOR, \
43 LIBSWSCALE_VERSION_MICRO)
44 #define LIBSWSCALE_BUILD LIBSWSCALE_VERSION_INT
46 #define LIBSWSCALE_IDENT "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION)
52 #ifndef FF_API_SWS_GETCONTEXT
53 #define FF_API_SWS_GETCONTEXT (LIBSWSCALE_VERSION_MAJOR < 3)
55 #ifndef FF_API_SWS_CPU_CAPS
56 #define FF_API_SWS_CPU_CAPS (LIBSWSCALE_VERSION_MAJOR < 3)
75 #define SWS_FAST_BILINEAR 1
76 #define SWS_BILINEAR 2
79 #define SWS_POINT 0x10
81 #define SWS_BICUBLIN 0x40
82 #define SWS_GAUSS 0x80
83 #define SWS_SINC 0x100
84 #define SWS_LANCZOS 0x200
85 #define SWS_SPLINE 0x400
87 #define SWS_SRC_V_CHR_DROP_MASK 0x30000
88 #define SWS_SRC_V_CHR_DROP_SHIFT 16
90 #define SWS_PARAM_DEFAULT 123456
92 #define SWS_PRINT_INFO 0x1000
96 #define SWS_FULL_CHR_H_INT 0x2000
98 #define SWS_FULL_CHR_H_INP 0x4000
99 #define SWS_DIRECT_BGR 0x8000
100 #define SWS_ACCURATE_RND 0x40000
101 #define SWS_BITEXACT 0x80000
103 #if FF_API_SWS_CPU_CAPS
108 #define SWS_CPU_CAPS_MMX 0x80000000
109 #define SWS_CPU_CAPS_MMX2 0x20000000
110 #define SWS_CPU_CAPS_3DNOW 0x40000000
111 #define SWS_CPU_CAPS_ALTIVEC 0x10000000
112 #define SWS_CPU_CAPS_BFIN 0x01000000
113 #define SWS_CPU_CAPS_SSE2 0x02000000
116 #define SWS_MAX_REDUCE_CUTOFF 0.002
118 #define SWS_CS_ITU709 1
120 #define SWS_CS_ITU601 5
121 #define SWS_CS_ITU624 5
122 #define SWS_CS_SMPTE170M 5
123 #define SWS_CS_SMPTE240M 7
124 #define SWS_CS_DEFAULT 5
185 #if FF_API_SWS_GETCONTEXT
235 const int srcStride[],
int srcSliceY,
int srcSliceH,
236 uint8_t *
const dst[],
const int dstStride[]);
305 float lumaSharpen,
float chromaSharpen,
306 float chromaHShift,
float chromaVShift,
void sws_freeContext(struct SwsContext *swsContext)
Free the swscaler context swsContext.
int sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[])
Scale the image slice in srcSlice and put the resulting scaled slice in the image in dst...
void sws_freeVec(SwsVector *a)
SwsVector * sws_getConstVec(double c, int length)
Allocate and return a vector with length coefficients, all with the same value c. ...
int srcRange
0 = MPG YUV range, 1 = JPG YUV range (source image).
void sws_freeFilter(SwsFilter *filter)
enum PixelFormat srcFormat
Source pixel format.
int srcH
Height of source luma/alpha planes.
int length
number of coefficients in the vector
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)
Check if context can be reused, otherwise reallocate a new one.
struct SwsContext * sws_alloc_context(void)
Allocate an empty SwsContext.
int dstH
Height of destination luma/alpha planes.
SwsFilter * sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, float lumaSharpen, float chromaSharpen, float chromaHShift, float chromaVShift, int verbose)
SwsVector * sws_getGaussianVec(double variance, double quality)
Return a normalized Gaussian curve used to filter stuff quality = 3 is high quality, lower is lower quality.
void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
Convert an 8-bit paletted frame into a frame with a color depth of 24 bits.
struct 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)
Allocate and return an SwsContext.
void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
Convert an 8-bit paletted frame into a frame with a color depth of 32 bits.
static void filter(MpegAudioContext *s, int ch, const short *samples, int incr)
int dstRange
0 = MPG YUV range, 1 = JPG YUV range (destination image).
void sws_subVec(SwsVector *a, SwsVector *b)
int sws_isSupportedOutput(enum PixelFormat pix_fmt)
Return a positive value if pix_fmt is a supported output format, 0 otherwise.
int sws_isSupportedInput(enum PixelFormat pix_fmt)
Return a positive value if pix_fmt is a supported input format, 0 otherwise.
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)
void sws_shiftVec(SwsVector *a, int shift)
int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation)
int dstW
Width of destination luma/alpha planes.
unsigned swscale_version(void)
Return the LIBSWSCALE_VERSION_INT constant.
double * coeff
pointer to the list of coefficients
const int * sws_getCoefficients(int colorspace)
Return a pointer to yuv<->rgb coefficients for the given colorspace suitable for sws_setColorspaceDet...
SwsVector * sws_cloneVec(SwsVector *a)
Allocate and return a clone of the vector a, that is a vector with the same coefficients as a...
void sws_normalizeVec(SwsVector *a, double height)
Scale all the coefficients of a so that their sum equals height.
Describe the class of an AVClass context structure.
int sws_init_context(struct SwsContext *sws_context, SwsFilter *srcFilter, SwsFilter *dstFilter)
Initialize the swscaler context sws_context.
const char * swscale_configuration(void)
Return the libswscale build-time configuration.
SwsVector * sws_allocVec(int length)
Allocate and return an uninitialized vector with length coefficients.
double param[2]
Input parameters for scaling algorithms that need them.
const AVClass * sws_get_class(void)
Get the AVClass for swsContext.
SwsVector * sws_getIdentityVec(void)
Allocate and return a vector with just one coefficient, with value 1.0.
const char * swscale_license(void)
Return the libswscale license.
void sws_convVec(SwsVector *a, SwsVector *b)
void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
Print with av_log() a textual representation of the vector a if log_level <= av_log_level.
void sws_addVec(SwsVector *a, SwsVector *b)
enum AVColorSpace colorspace
enum PixelFormat dstFormat
Destination pixel format.
void sws_scaleVec(SwsVector *a, double scalar)
Scale all the coefficients of a by the scalar value.
int srcW
Width of source luma/alpha planes.