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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.
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MPLAYER_AD_H
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#define MPLAYER_AD_H
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#include "common/codecs.h"
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#include "demux/stheader.h"
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#include "demux/demux.h"
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#include "audio/format.h"
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#include "audio/aframe.h"
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#include "dec_audio.h"
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struct mp_decoder_list;
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/* interface of audio decoder drivers */
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struct ad_functions {
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const char *name;
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void (*add_decoders)(struct mp_decoder_list *list);
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int (*init)(struct dec_audio *da, const char *decoder);
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void (*uninit)(struct dec_audio *da);
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int (*control)(struct dec_audio *da, int cmd, void *arg);
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// Return whether or not the packet has been consumed.
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bool (*send_packet)(struct dec_audio *da, struct demux_packet *pkt);
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// Return whether decoding is still going on (false if EOF was reached).
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// Never returns false & *out set, but can return true with !*out.
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bool (*receive_frame)(struct dec_audio *da, struct mp_aframe **out);
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};
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enum ad_ctrl {
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ADCTRL_RESET = 1, // flush and reset state, e.g. after seeking
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};
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#endif /* MPLAYER_AD_H */
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