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#pragma once
#include <stdbool.h>
#include <zimg.h>
#include "mp_image.h"
#define ZIMG_ALIGN 64
struct mpv_global;
bool mp_zimg_supports_in_format(int imgfmt);
bool mp_zimg_supports_out_format(int imgfmt);
struct zimg_opts {
int scaler;
double scaler_params[2];
int scaler_chroma;
double scaler_chroma_params[2];
int dither;
bool fast;
int threads;
};
extern const struct zimg_opts zimg_opts_defaults;
struct mp_zimg_context {
// Can be set for verbose error printing.
struct mp_log *log;
// User configuration. Note: changing these requires calling mp_zimg_config()
// to update the filter graph. The first mp_zimg_convert() call (or if the
// image format changes) will do this automatically.
struct zimg_opts opts;
// Input/output parameters. Note: if these mismatch with the
// mp_zimg_convert() parameters, mp_zimg_config() will be called
// automatically.
struct mp_image_params src, dst;
// Cached zimg state (if any). Private, do not touch.
struct m_config_cache *opts_cache;
struct mp_zimg_state **states;
int num_states;
struct mp_thread_pool *tp;
int current_thread_count;
};
// Allocate a zimg context. Always succeeds. Returns a talloc pointer (use
// talloc_free() to release it).
struct mp_zimg_context *mp_zimg_alloc(void);
// Enable auto-update of parameters from command line. Don't try to set custom
// options (other than possibly .src/.dst), because they might be overwritten
// if the user changes any options.
void mp_zimg_enable_cmdline_opts(struct mp_zimg_context *ctx,
struct mpv_global *g);
// Try to build the conversion chain using the parameters currently set in ctx.
// If this succeeds, mp_zimg_convert() will always succeed (probably), as long
// as the input has the same parameters.
// Returns false on error.
bool mp_zimg_config(struct mp_zimg_context *ctx);
// Similar to mp_zimg_config(), but assume none of the user parameters changed,
// except possibly .src and .dst. This essentially checks whether src/dst
// changed, and if so, calls mp_zimg_config().
bool mp_zimg_config_image_params(struct mp_zimg_context *ctx);
// Convert/scale src to dst. On failure, the data in dst is not touched.
bool mp_zimg_convert(struct mp_zimg_context *ctx, struct mp_image *dst,
struct mp_image *src);
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