#define SWSCALE_SWSCALE_H
/**
- * @file libswscale/swscale.h
+ * @file
* @brief
* external api for the swscale stuff
*/
#include "libavutil/avutil.h"
#define LIBSWSCALE_VERSION_MAJOR 0
-#define LIBSWSCALE_VERSION_MINOR 7
-#define LIBSWSCALE_VERSION_MICRO 1
+#define LIBSWSCALE_VERSION_MINOR 12
+#define LIBSWSCALE_VERSION_MICRO 0
#define LIBSWSCALE_VERSION_INT AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \
LIBSWSCALE_VERSION_MINOR, \
#define LIBSWSCALE_IDENT "SwS" AV_STRINGIFY(LIBSWSCALE_VERSION)
+/**
+ * Those FF_API_* defines are not part of public API.
+ * They may change, break or disappear at any time.
+ */
+#ifndef FF_API_SWS_GETCONTEXT
+#define FF_API_SWS_GETCONTEXT (LIBSWSCALE_VERSION_MAJOR < 1)
+#endif
+
/**
* Returns the LIBSWSCALE_VERSION_INT constant.
*/
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_CPU_CAPS_3DNOW 0x40000000
#define SWS_CPU_CAPS_ALTIVEC 0x10000000
#define SWS_CPU_CAPS_BFIN 0x01000000
+#define SWS_CPU_CAPS_SSE2 0x02000000
#define SWS_MAX_REDUCE_CUTOFF 0.002
#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);
+
+/**
+ * Allocates an empty SwsContext. This must be filled and passed to
+ * sws_init_context(). For filling see AVOptions, options.c and
+ * sws_setColorspaceDetails().
+ */
+struct SwsContext *sws_alloc_context(void);
+
+/**
+ * Initializes the swscaler context sws_context.
+ *
+ * @return zero or positive value on success, a negative value on
+ * error
+ */
+int sws_init_context(struct SwsContext *sws_context, SwsFilter *srcFilter, SwsFilter *dstFilter);
+
+/**
+ * Frees the swscaler context swsContext.
+ * If swsContext is NULL, then does nothing.
+ */
void sws_freeContext(struct SwsContext *swsContext);
+#if FF_API_SWS_GETCONTEXT
/**
* Allocates and returns a SwsContext. You need it to perform
* scaling/conversion operations using sws_scale().
* @param dstFormat the destination image format
* @param flags specify which algorithm and options to use for rescaling
* @return a pointer to an allocated context, or NULL in case of error
+ * @deprecated use sws_alloc_context() and sws_init_context()
*/
+attribute_deprecated
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);
+#endif
/**
- * 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 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
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
* quality=3 is high quality, lower is lower quality.
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 flags, SwsFilter *srcFilter,
SwsFilter *dstFilter, const double *param);
+/**
+ * Converts an 8bit paletted frame into a frame with a color depth of 32-bits.
+ *
+ * The output frame will have the same packed format as the palette.
+ *
+ * @param src source frame buffer
+ * @param dst destination frame buffer
+ * @param num_pixels number of pixels to convert
+ * @param palette array with [256] entries, which must match color arrangement (RGB or BGR) of src
+ */
+void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
+
+/**
+ * Converts an 8bit paletted frame into a frame with a color depth of 24 bits.
+ *
+ * With the palette format "ABCD", the destination frame ends up with the format "ABC".
+ *
+ * @param src source frame buffer
+ * @param dst destination frame buffer
+ * @param num_pixels number of pixels to convert
+ * @param palette array with [256] entries, which must match color arrangement (RGB or BGR) of src
+ */
+void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
+
+
#endif /* SWSCALE_SWSCALE_H */
projects / ffmpeg / blobdiff