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#include <stdint.h>#include "libavutil/avutil.h"#include "libavutil/frame.h"#include "libavutil/log.h"#include "libavutil/pixfmt.h"#include "version_major.h"Go to the source code of this file.
Data Structures | |
| struct | SwsContext |
| Main external API structure. More... | |
| struct | SwsVector |
| struct | SwsFilter |
Macros | |
| #define | SWS_SRC_V_CHR_DROP_MASK 0x30000 |
| #define | SWS_SRC_V_CHR_DROP_SHIFT 16 |
| #define | SWS_PARAM_DEFAULT 123456 |
| #define | SWS_MAX_REDUCE_CUTOFF 0.002 |
| #define | SWS_CS_ITU709 1 |
| #define | SWS_CS_FCC 4 |
| #define | SWS_CS_ITU601 5 |
| #define | SWS_CS_ITU624 5 |
| #define | SWS_CS_SMPTE170M 5 |
| #define | SWS_CS_SMPTE240M 7 |
| #define | SWS_CS_DEFAULT 5 |
| #define | SWS_CS_BT2020 9 |
Enumerations | |
| enum | SwsDither { SWS_DITHER_NONE = 0, SWS_DITHER_AUTO, SWS_DITHER_BAYER, SWS_DITHER_ED, SWS_DITHER_A_DITHER, SWS_DITHER_X_DITHER, SWS_DITHER_NB } |
| enum | SwsAlphaBlend { SWS_ALPHA_BLEND_NONE = 0, SWS_ALPHA_BLEND_UNIFORM, SWS_ALPHA_BLEND_CHECKERBOARD, SWS_ALPHA_BLEND_NB } |
| enum | SwsFlags { SWS_FAST_BILINEAR = 1 << 0, SWS_BILINEAR = 1 << 1, SWS_BICUBIC = 1 << 2, SWS_X = 1 << 3, SWS_POINT = 1 << 4, SWS_AREA = 1 << 5, SWS_BICUBLIN = 1 << 6, SWS_GAUSS = 1 << 7, SWS_SINC = 1 << 8, SWS_LANCZOS = 1 << 9, SWS_SPLINE = 1 << 10, SWS_STRICT = 1 << 11, SWS_PRINT_INFO = 1 << 12, SWS_FULL_CHR_H_INT = 1 << 13, SWS_FULL_CHR_H_INP = 1 << 14, SWS_ACCURATE_RND = 1 << 18, SWS_BITEXACT = 1 << 19, SWS_DIRECT_BGR = 1 << 15, SWS_ERROR_DIFFUSION = 1 << 23 } |
| enum | SwsIntent { SWS_INTENT_PERCEPTUAL = 0, SWS_INTENT_RELATIVE_COLORIMETRIC = 1, SWS_INTENT_SATURATION = 2, SWS_INTENT_ABSOLUTE_COLORIMETRIC = 3, SWS_INTENT_NB } |
Functions | |
| unsigned | swscale_version (void) |
| const char * | swscale_configuration (void) |
| Return the libswscale build-time configuration. More... | |
| const char * | swscale_license (void) |
| Return the libswscale license. More... | |
| const AVClass * | sws_get_class (void) |
| Get the AVClass for SwsContext. More... | |
| SwsContext * | sws_alloc_context (void) |
| Allocate an empty SwsContext and set its fields to default values. More... | |
| void | sws_free_context (SwsContext **ctx) |
| Free the context and everything associated with it, and write NULL to the provided pointer. More... | |
| int | sws_test_format (enum AVPixelFormat format, int output) |
| Test if a given pixel format is supported. More... | |
| int | sws_test_colorspace (enum AVColorSpace colorspace, int output) |
| Test if a given color space is supported. More... | |
| int | sws_test_primaries (enum AVColorPrimaries primaries, int output) |
| Test if a given set of color primaries is supported. More... | |
| int | sws_test_transfer (enum AVColorTransferCharacteristic trc, int output) |
| Test if a given color transfer function is supported. More... | |
| int | sws_test_frame (const AVFrame *frame, int output) |
| Helper function to run all sws_test_* against a frame, as well as testing the basic frame properties for sanity. More... | |
| int | sws_frame_setup (SwsContext *ctx, const AVFrame *dst, const AVFrame *src) |
Like sws_scale_frame, but without actually scaling. More... | |
| int | sws_is_noop (const AVFrame *dst, const AVFrame *src) |
| Check if a given conversion is a noop. More... | |
| int | sws_scale_frame (SwsContext *c, AVFrame *dst, const AVFrame *src) |
Scale source data from src and write the output to dst. More... | |
| const int * | sws_getCoefficients (int colorspace) |
| Return a pointer to yuv<->rgb coefficients for the given colorspace suitable for sws_setColorspaceDetails(). More... | |
| int | sws_isSupportedInput (enum AVPixelFormat pix_fmt) |
| Return a positive value if pix_fmt is a supported input format, 0 otherwise. More... | |
| int | sws_isSupportedOutput (enum AVPixelFormat pix_fmt) |
| Return a positive value if pix_fmt is a supported output format, 0 otherwise. More... | |
| int | sws_isSupportedEndiannessConversion (enum AVPixelFormat pix_fmt) |
| av_warn_unused_result int | sws_init_context (SwsContext *sws_context, SwsFilter *srcFilter, SwsFilter *dstFilter) |
| Initialize the swscaler context sws_context. More... | |
| void | sws_freeContext (SwsContext *swsContext) |
| Free the swscaler context swsContext. More... | |
| SwsContext * | sws_getContext (int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param) |
| Allocate and return an SwsContext. More... | |
| int | sws_scale (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. More... | |
| int | sws_frame_start (SwsContext *c, AVFrame *dst, const AVFrame *src) |
| Initialize the scaling process for a given pair of source/destination frames. More... | |
| void | sws_frame_end (SwsContext *c) |
| Finish the scaling process for a pair of source/destination frames previously submitted with sws_frame_start(). More... | |
| int | sws_send_slice (SwsContext *c, unsigned int slice_start, unsigned int slice_height) |
| Indicate that a horizontal slice of input data is available in the source frame previously provided to sws_frame_start(). More... | |
| int | sws_receive_slice (SwsContext *c, unsigned int slice_start, unsigned int slice_height) |
| Request a horizontal slice of the output data to be written into the frame previously provided to sws_frame_start(). More... | |
| unsigned int | sws_receive_slice_alignment (const SwsContext *c) |
| Get the alignment required for slices. More... | |
| int | sws_setColorspaceDetails (SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation) |
| int | sws_getColorspaceDetails (SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation) |
| SwsVector * | sws_allocVec (int length) |
| Allocate and return an uninitialized vector with length coefficients. More... | |
| 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. More... | |
| void | sws_scaleVec (SwsVector *a, double scalar) |
| Scale all the coefficients of a by the scalar value. More... | |
| void | sws_normalizeVec (SwsVector *a, double height) |
| Scale all the coefficients of a so that their sum equals height. More... | |
| void | sws_freeVec (SwsVector *a) |
| SwsFilter * | sws_getDefaultFilter (float lumaGBlur, float chromaGBlur, float lumaSharpen, float chromaSharpen, float chromaHShift, float chromaVShift, int verbose) |
| void | sws_freeFilter (SwsFilter *filter) |
| SwsContext * | sws_getCachedContext (SwsContext *context, int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param) |
| Check if context can be reused, otherwise reallocate a new one. More... | |
| 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. More... | |
| 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. More... | |
external API header
Definition in file swscale.h.
1.8.17