#include "libavutil/avutil.h"
#define LIBSWSCALE_VERSION_MAJOR 0
-#define LIBSWSCALE_VERSION_MINOR 7
-#define LIBSWSCALE_VERSION_MICRO 1
+#define LIBSWSCALE_VERSION_MINOR 10
+#define LIBSWSCALE_VERSION_MICRO 0
#define LIBSWSCALE_VERSION_INT AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \
LIBSWSCALE_VERSION_MINOR, \
*/
unsigned swscale_version(void);
+/**
+ * Returns the libswscale build-time configuration.
+ */
+const char *swscale_configuration(void);
+
+/**
+ * Returns the libswscale license.
+ */
+const char *swscale_license(void);
+
/* values for the flags, the stuff on the command line is different */
#define SWS_FAST_BILINEAR 1
#define SWS_BILINEAR 2
#define SWS_CS_SMPTE240M 7
#define SWS_CS_DEFAULT 5
+/**
+ * Returns a pointer to yuv<->rgb coefficients for the given colorspace
+ * suitable for sws_setColorspaceDetails().
+ *
+ * @param colorspace One of the SWS_CS_* macros. If invalid,
+ * SWS_CS_DEFAULT is used.
+ */
+const int *sws_getCoefficients(int colorspace);
// when used for filters they must have an odd number of elements
struct SwsContext;
+/**
+ * Returns a positive value if pix_fmt is a supported input format, 0
+ * otherwise.
+ */
+int sws_isSupportedInput(enum PixelFormat pix_fmt);
+
+/**
+ * Returns a positive value if pix_fmt is a supported output format, 0
+ * otherwise.
+ */
+int sws_isSupportedOutput(enum PixelFormat pix_fmt);
+
+/**
+ * Frees the swscaler context swsContext.
+ * If swsContext is NULL, then does nothing.
+ */
void sws_freeContext(struct SwsContext *swsContext);
/**
* @param flags specify which algorithm and options to use for rescaling
* @return a pointer to an allocated context, or NULL in case of error
*/
-struct SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,
- SwsFilter *srcFilter, SwsFilter *dstFilter, double *param);
+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);
/**
- * Scales the image slice in \p srcSlice and puts the resulting scaled
- * slice in the image in \p dst. A slice is a sequence of consecutive
+ * Scales the image slice in srcSlice and puts the resulting scaled
+ * slice in the image in dst. A slice is a sequence of consecutive
* rows in an image.
*
+ * Slices have to be provided in sequential order, either in
+ * top-bottom or bottom-top order. If slices are provided in
+ * non-sequential order the behavior of the function is undefined.
+ *
* @param context the scaling context previously created with
* sws_getContext()
* @param srcSlice the array containing the pointers to the planes of
* the destination image
* @return the height of the output slice
*/
-int sws_scale(struct SwsContext *context, uint8_t* srcSlice[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]);
+int sws_scale(struct SwsContext *context, const uint8_t* const srcSlice[], const int srcStride[],
+ int srcSliceY, int srcSliceH, uint8_t* const dst[], const int dstStride[]);
#if LIBSWSCALE_VERSION_MAJOR < 1
/**
* @deprecated Use sws_scale() instead.
*/
-int sws_scale_ordered(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]) attribute_deprecated;
+int sws_scale_ordered(struct SwsContext *context, const uint8_t* const src[],
+ int srcStride[], int srcSliceY, int srcSliceH,
+ uint8_t* dst[], int dstStride[]) attribute_deprecated;
#endif
+/**
+ * @param inv_table the yuv2rgb coefficients, normally ff_yuv2rgb_coeffs[x]
+ * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235
+ * @return -1 if not supported
+ */
+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);
+
+/**
+ * @return -1 if not supported
+ */
+int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table,
+ int *srcRange, int **table, int *dstRange,
+ int *brightness, int *contrast, int *saturation);
-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);
-int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation);
+/**
+ * Allocates and returns an uninitialized vector with length coefficients.
+ */
+SwsVector *sws_allocVec(int length);
/**
* Returns a normalized Gaussian curve used to filter stuff
SwsVector *sws_getGaussianVec(double variance, double quality);
/**
- * Allocates and returns a vector with \p length coefficients, all
- * with the same value \p c.
+ * Allocates and returns a vector with length coefficients, all
+ * with the same value c.
*/
SwsVector *sws_getConstVec(double c, int length);
SwsVector *sws_getIdentityVec(void);
/**
- * Scales all the coefficients of \p a by the \p scalar value.
+ * Scales all the coefficients of a by the scalar value.
*/
void sws_scaleVec(SwsVector *a, double scalar);
/**
- * Scales all the coefficients of \p a so that their sum equals \p
- * height."
+ * Scales all the coefficients of a so that their sum equals height.
*/
void sws_normalizeVec(SwsVector *a, double height);
void sws_convVec(SwsVector *a, SwsVector *b);
void sws_shiftVec(SwsVector *a, int shift);
/**
- * Allocates and returns a clone of the vector \p a, that is a vector
- * with the same coefficients as \p a.
+ * Allocates and returns a clone of the vector a, that is a vector
+ * with the same coefficients as a.
*/
SwsVector *sws_cloneVec(SwsVector *a);
#endif
/**
- * Prints with av_log() a textual representation of the vector \p a
- * if \p log_level <= av_log_level.
+ * Prints with av_log() a textual representation of the vector a
+ * if log_level <= av_log_level.
*/
void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level);
void sws_freeFilter(SwsFilter *filter);
/**
- * Checks if \p context can be reused, otherwise reallocates a new
+ * Checks if context can be reused, otherwise reallocates a new
* one.
*
- * If \p context is NULL, just calls sws_getContext() to get a new
+ * If context is NULL, just calls sws_getContext() to get a new
* context. Otherwise, checks if the parameters are the ones already
- * saved in \p context. If that is the case, returns the current
- * context. Otherwise, frees \p context and gets a new context with
+ * saved in context. If that is the case, returns the current
+ * context. Otherwise, frees context and gets a new context with
* the new parameters.
*
- * Be warned that \p srcFilter and \p dstFilter are not checked, they
+ * Be warned that srcFilter and dstFilter are not checked, they
* are assumed to remain the same.
*/
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, double *param);
+ int dstW, int dstH, enum PixelFormat dstFormat,
+ int flags, SwsFilter *srcFilter,
+ SwsFilter *dstFilter, const double *param);
#endif /* SWSCALE_SWSCALE_H */
projects / ffmpeg / blobdiff