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https://github.com/mpv-player/mpv
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9cfeafa89e
skip-logo.lua is just what I wanted to have. Explanations are on the top of that file. As usual, all documentation threatens to remove this stuff all the time, since this stuff is just for me, and unlike a normal user I can afford the luxuary of hacking the shit directly into the player. vf_fingerprint is needed to support this script. It needs to scale down video frames as part of its operation. For that, it uses zimg. zimg is much faster than libswscale and generates more correct output. (The filter includes a runtime fallback, but it doesn't even work because libswscale fucks up and can't do YUV->Gray with range adjustment.) Note on the algorithm: seems almost too simple, but was suggested to me. It seems to be pretty effective, although long time experience with false positives is missing. At first I wanted to use dHash [1][2], which is also pretty simple and effective, but might actually be worse than the implemented mechanism. dHash has the advantage that the fingerprint is smaller. But exact matching is too unreliable, and you'd still need to determine the number of different bits for fuzzier comparison. So there wasn't really a reason to use it. [1] https://pypi.org/project/dhash/ [2] http://www.hackerfactor.com/blog/index.php?/archives/529-Kind-of-Like-That.html
37 lines
1.5 KiB
C
37 lines
1.5 KiB
C
#pragma once
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#include "options/m_option.h"
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#include "f_output_chain.h"
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// For creating filters from command line. Strictly for --vf/--af.
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struct mp_user_filter_entry {
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// Name and sub-option description.
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struct m_obj_desc desc;
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// Create a filter. The option pointer is non-NULL if desc implies a priv
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// struct to be allocated; then options are parsed into it. The callee
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// must always free options (but can reparent it with talloc to keep it).
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struct mp_filter *(*create)(struct mp_filter *parent, void *options);
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};
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struct mp_filter *mp_create_user_filter(struct mp_filter *parent,
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enum mp_output_chain_type type,
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const char *name, char **args);
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extern const struct mp_user_filter_entry af_lavfi;
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extern const struct mp_user_filter_entry af_lavfi_bridge;
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extern const struct mp_user_filter_entry af_scaletempo;
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extern const struct mp_user_filter_entry af_format;
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extern const struct mp_user_filter_entry af_rubberband;
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extern const struct mp_user_filter_entry af_lavcac3enc;
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extern const struct mp_user_filter_entry vf_lavfi;
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extern const struct mp_user_filter_entry vf_lavfi_bridge;
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extern const struct mp_user_filter_entry vf_sub;
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extern const struct mp_user_filter_entry vf_vapoursynth;
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extern const struct mp_user_filter_entry vf_format;
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extern const struct mp_user_filter_entry vf_vdpaupp;
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extern const struct mp_user_filter_entry vf_vavpp;
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extern const struct mp_user_filter_entry vf_d3d11vpp;
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extern const struct mp_user_filter_entry vf_fingerprint;
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