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https://github.com/mpv-player/mpv
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2a89da0c85
This probably makes it much faster (I wouldn't know, I didn't run any benchmarks ). Seems to work as well (although I'm not sure, it's not like I'd perform rigorous tests). The scale_zimg test seems to mysteriously treat color in fully transparent alpha differently, which makes no sense, and isn't visible (but makes the test fail). I can't be bothered with investigating this more. What do you do with failing tests? Correct, you disable them. Or rather, you disable whatever appears to cause them to fail, which is the threading in this case. This change follows mostly the tile_example.cpp. The slice size uses a minimum of 64, which was suggested by the zimg author. Some of this commit is a bit inelegant and weird, such as recomputing the scale factor for every slice, or the way slice_h is managed. Too lazy to make this more elegant. zimg git had a regressio around active_region (which is needed by the slicing), which was fixed in commit 83071706b2e6bc634. Apparently, the bug was never released, so just add a warning to the manpage.
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
#pragma once
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#include <stdbool.h>
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#include <zimg.h>
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#include "mp_image.h"
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#define ZIMG_ALIGN 64
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struct mpv_global;
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bool mp_zimg_supports_in_format(int imgfmt);
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bool mp_zimg_supports_out_format(int imgfmt);
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struct zimg_opts {
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int scaler;
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double scaler_params[2];
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int scaler_chroma;
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double scaler_chroma_params[2];
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int dither;
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int fast;
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int threads;
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};
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extern const struct zimg_opts zimg_opts_defaults;
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struct mp_zimg_context {
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// Can be set for verbose error printing.
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struct mp_log *log;
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// User configuration. Note: changing these requires calling mp_zimg_config()
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// to update the filter graph. The first mp_zimg_convert() call (or if the
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// image format changes) will do this automatically.
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struct zimg_opts opts;
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// Input/output parameters. Note: if these mismatch with the
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// mp_zimg_convert() parameters, mp_zimg_config() will be called
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// automatically.
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struct mp_image_params src, dst;
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// Cached zimg state (if any). Private, do not touch.
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struct m_config_cache *opts_cache;
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struct mp_zimg_state **states;
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int num_states;
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struct mp_thread_pool *tp;
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int current_thread_count;
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};
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// Allocate a zimg context. Always succeeds. Returns a talloc pointer (use
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// talloc_free() to release it).
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struct mp_zimg_context *mp_zimg_alloc(void);
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// Enable auto-update of parameters from command line. Don't try to set custom
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// options (other than possibly .src/.dst), because they might be overwritten
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// if the user changes any options.
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void mp_zimg_enable_cmdline_opts(struct mp_zimg_context *ctx,
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struct mpv_global *g);
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// Try to build the conversion chain using the parameters currently set in ctx.
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// If this succeeds, mp_zimg_convert() will always succeed (probably), as long
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// as the input has the same parameters.
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// Returns false on error.
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bool mp_zimg_config(struct mp_zimg_context *ctx);
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// Similar to mp_zimg_config(), but assume none of the user parameters changed,
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// except possibly .src and .dst. This essentially checks whether src/dst
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// changed, and if so, calls mp_zimg_config().
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bool mp_zimg_config_image_params(struct mp_zimg_context *ctx);
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// Convert/scale src to dst. On failure, the data in dst is not touched.
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bool mp_zimg_convert(struct mp_zimg_context *ctx, struct mp_image *dst,
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struct mp_image *src);
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