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https://github.com/mpv-player/mpv
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1f593beeb4
This is pretty pointless, but I believe it allows us to claim that the new code is not affected by the copyright of the old code. This is needed, because the original mp_audio struct was written by someone who has disagreed with LGPL relicensing (it was called af_data at the time, and was defined in af.h). The "GPL'ed" struct contents that surive are pretty trivial: just the data pointer, and some metadata like the format, samplerate, etc. - but at least in this case, any new code would be extremely similar anyway, and I'm not really sure whether it's OK to claim different copyright. So what we do is we just use AVFrame (which of course is LGPL with 100% certainty), and add some accessors around it to adapt it to mpv conventions. Also, this gets rid of some annoying conventions of mp_audio, like the struct fields that require using an accessor to write to them anyway. For the most part, this change is only dumb replacements of mp_audio related functions and fields. One minor actual change is that you can't allocate the new type on the stack anymore. Some code still uses mp_audio. All audio filter code will be deleted, so it makes no sense to convert this code. (Audio filters which are LGPL and which we keep will have to be ported to a new filter infrastructure anyway.) player/audio.c uses it because it interacts with the old filter code. push.c has some complex use of mp_audio and mp_audio_buffer, but this and pull.c will most likely be rewritten to do something else.
36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
#ifndef MP_LAVFI
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#define MP_LAVFI
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struct mp_log;
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struct lavfi;
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struct lavfi_pad;
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struct mp_image;
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struct mp_aframe;
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enum lavfi_direction {
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LAVFI_IN = 1,
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LAVFI_OUT,
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};
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struct lavfi *lavfi_create(struct mp_log *log, char *graph_string);
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const char *lavfi_get_graph(struct lavfi *c);
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void lavfi_destroy(struct lavfi *c);
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struct lavfi_pad *lavfi_find_pad(struct lavfi *c, char *name);
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enum lavfi_direction lavfi_pad_direction(struct lavfi_pad *pad);
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enum stream_type lavfi_pad_type(struct lavfi_pad *pad);
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void lavfi_set_connected(struct lavfi_pad *pad, bool connected);
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bool lavfi_get_connected(struct lavfi_pad *pad);
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bool lavfi_process(struct lavfi *c);
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bool lavfi_has_failed(struct lavfi *c);
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void lavfi_seek_reset(struct lavfi *c);
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void lavfi_pad_set_hwdec_devs(struct lavfi_pad *pad,
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struct mp_hwdec_devices *hwdevs);
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int lavfi_request_frame_a(struct lavfi_pad *pad, struct mp_aframe **out_aframe);
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int lavfi_request_frame_v(struct lavfi_pad *pad, struct mp_image **out_vframe);
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bool lavfi_needs_input(struct lavfi_pad *pad);
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void lavfi_send_status(struct lavfi_pad *pad, int status);
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void lavfi_send_frame_a(struct lavfi_pad *pad, struct mp_aframe *aframe);
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void lavfi_send_frame_v(struct lavfi_pad *pad, struct mp_image *vframe);
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#endif
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