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#ifndef MPLAYER_SWS_UTILS_H
#define MPLAYER_SWS_UTILS_H
#include <stdbool.h>
#include "mp_image.h"
struct mp_image;
struct mpv_global;
// libswscale currently requires 16 bytes alignment for row pointers and
// strides. Otherwise, it will print warnings and use slow codepaths.
// Guaranteed to be a power of 2 and > 1.
#define SWS_MIN_BYTE_ALIGN MP_IMAGE_BYTE_ALIGN
extern const int mp_sws_fast_flags;
bool mp_sws_supported_format(int imgfmt);
int mp_image_swscale(struct mp_image *dst, struct mp_image *src,
int my_sws_flags);
int mp_image_sw_blur_scale(struct mp_image *dst, struct mp_image *src,
float gblur);
enum mp_sws_scaler {
MP_SWS_AUTO = 0, // use command line
MP_SWS_SWS,
MP_SWS_ZIMG,
};
struct mp_sws_context {
// Can be set for verbose error printing.
struct mp_log *log;
// User configuration. These can be changed freely, at any time.
// mp_sws_scale() will handle the changes transparently.
int flags;
bool allow_zimg; // use zimg if available (ignores filters and all)
bool force_reload;
// These are also implicitly set by mp_sws_scale(), and thus optional.
// Setting them before that call makes sense when using mp_sws_reinit().
struct mp_image_params src, dst;
// This is unfortunately a hack: bypass command line choice
enum mp_sws_scaler force_scaler;
// If zimg is used. Need to manually invalidate cache (set force_reload).
// Conflicts with enabling command line opts.
struct zimg_opts *zimg_opts;
// Changing these requires setting force_reload=true.
// By default, they are NULL.
// Freeing the mp_sws_context will deallocate these if set.
struct SwsFilter *src_filter, *dst_filter;
double params[2];
// Cached context (if any)
struct SwsContext *sws;
bool supports_csp;
// Private.
struct m_config_cache *opts_cache;
struct mp_sws_context *cached; // contains parameters for which sws is valid
struct mp_zimg_context *zimg;
bool zimg_ok;
struct mp_image *aligned_src, *aligned_dst;
};
struct mp_sws_context *mp_sws_alloc(void *talloc_ctx);
void mp_sws_enable_cmdline_opts(struct mp_sws_context *ctx, struct mpv_global *g);
int mp_sws_reinit(struct mp_sws_context *ctx);
int mp_sws_scale(struct mp_sws_context *ctx, struct mp_image *dst,
struct mp_image *src);
bool mp_sws_supports_formats(struct mp_sws_context *ctx,
int imgfmt_out, int imgfmt_in);
struct mp_image *mp_img_swap_to_native(struct mp_image *img);
#endif /* MP_SWS_UTILS_H */
// vim: ts=4 sw=4 et tw=80
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