mirror of
https://github.com/mpv-player/mpv
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76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MP_AO_INTERNAL_H_
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#define MP_AO_INTERNAL_H_
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/* global data used by ao.c and ao drivers */
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struct ao {
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int samplerate;
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struct mp_chmap channels;
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int format; // one of AF_FORMAT_...
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int bps; // bytes per second
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int sstride; // size of a sample on each plane
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// (format_size*num_channels/num_planes)
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bool probing; // if true, don't fail loudly on init
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bool untimed; // don't assume realtime playback
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bool no_persistent_volume; // the AO does the equivalent of af_volume
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bool per_application_mixer; // like above, but volume persists (per app)
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const struct ao_driver *driver;
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void *priv;
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struct encode_lavc_context *encode_lavc_ctx;
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struct input_ctx *input_ctx;
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struct mp_log *log; // Using e.g. "[ao/coreaudio]" as prefix
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};
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struct ao_driver {
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// If true, use with encoding only.
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bool encode;
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// Name used for --ao.
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const char *name;
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// Description shown with --ao=help.
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const char *description;
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// Init the device using ao->format/ao->channels/ao->samplerate. If the
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// device doesn't accept these parameters, you can attempt to negotiate
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// fallback parameters, and set the ao format fields accordingly.
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int (*init)(struct ao *ao);
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// See ao_control() etc. in ao.c
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int (*control)(struct ao *ao, enum aocontrol cmd, void *arg);
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void (*uninit)(struct ao *ao, bool cut_audio);
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void (*reset)(struct ao*ao);
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int (*get_space)(struct ao *ao);
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int (*play)(struct ao *ao, void **data, int samples, int flags);
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float (*get_delay)(struct ao *ao);
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void (*pause)(struct ao *ao);
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void (*resume)(struct ao *ao);
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// For option parsing (see vo.h)
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int priv_size;
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const void *priv_defaults;
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const struct m_option *options;
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};
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// These functions can be called by AOs. They don't lock the AO.
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int ao_play_silence(struct ao *ao, int samples);
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bool ao_chmap_sel_adjust(struct ao *ao, const struct mp_chmap_sel *s,
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struct mp_chmap *map);
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bool ao_chmap_sel_get_def(struct ao *ao, const struct mp_chmap_sel *s,
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struct mp_chmap *map, int num);
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#endif
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