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https://code.videolan.org/videolan/vlc
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2049d40876
This callback is not mandatory. If it is NULL, the core will wait for the delay returned by time_get(). This was already the case for most aout plugins: PulseAudio, coreaudio, Android, DirectSound, Wasapi, and Jack.
113 lines
4.0 KiB
Objective-C
113 lines
4.0 KiB
Objective-C
/*****************************************************************************
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* coreaudio_common.h: Common AudioUnit code for iOS and macOS
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*****************************************************************************
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* Copyright (C) 2005 - 2017 VLC authors and VideoLAN
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*
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* Authors: Derk-Jan Hartman <hartman at videolan dot org>
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* Felix Paul Kühne <fkuehne at videolan dot org>
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* David Fuhrmann <david dot fuhrmann at googlemail dot com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program 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 License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# import "config.h"
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#endif
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#import <vlc_common.h>
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#import <vlc_aout.h>
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#import <vlc_threads.h>
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#import <AudioUnit/AudioUnit.h>
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#import <AudioToolbox/AudioToolbox.h>
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#import <os/lock.h>
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#define STREAM_FORMAT_MSG(pre, sfm) \
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pre "[%f][%4.4s][%u][%u][%u][%u][%u][%u]", \
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sfm.mSampleRate, (char *)&sfm.mFormatID, \
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(unsigned int)sfm.mFormatFlags, (unsigned int)sfm.mBytesPerPacket, \
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(unsigned int)sfm.mFramesPerPacket, (unsigned int)sfm.mBytesPerFrame, \
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(unsigned int)sfm.mChannelsPerFrame, (unsigned int)sfm.mBitsPerChannel
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#define ca_LogErr(fmt) msg_Err(p_aout, fmt ", OSStatus: %d", (int) err)
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#define ca_LogWarn(fmt) msg_Warn(p_aout, fmt ", OSStatus: %d", (int) err)
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struct aout_sys_common
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{
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/* The following is owned by common.c (initialized from ca_Init, cleaned
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* from ca_Clean) */
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size_t i_underrun_size;
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bool b_paused;
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bool b_do_flush;
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size_t i_out_max_size;
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size_t i_out_size;
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block_t *p_out_chain;
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block_t **pp_out_last;
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uint64_t i_render_host_time;
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uint32_t i_render_frames;
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vlc_sem_t flush_sem;
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union lock
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{
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wpartial-availability"
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os_unfair_lock unfair;
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#pragma clang diagnostic pop
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pthread_mutex_t mutex;
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} lock;
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int i_rate;
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unsigned int i_bytes_per_frame;
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unsigned int i_frame_length;
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uint8_t chans_to_reorder;
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uint8_t chan_table[AOUT_CHAN_MAX];
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/* ca_TimeGet extra latency, in micro-seconds */
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vlc_tick_t i_dev_latency_us;
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};
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void ca_Open(audio_output_t *p_aout);
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void ca_Close(audio_output_t *p_aout);
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void ca_Render(audio_output_t *p_aout, uint32_t i_nb_samples, uint64_t i_host_time,
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uint8_t *p_output, size_t i_requested);
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int ca_TimeGet(audio_output_t *p_aout, vlc_tick_t *delay);
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void ca_Flush(audio_output_t *p_aout);
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void ca_Pause(audio_output_t * p_aout, bool pause, vlc_tick_t date);
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void ca_Play(audio_output_t * p_aout, block_t * p_block, vlc_tick_t date);
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int ca_Initialize(audio_output_t *p_aout, const audio_sample_format_t *fmt,
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vlc_tick_t i_dev_latency_us);
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void ca_Uninitialize(audio_output_t *p_aout);
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void ca_SetAliveState(audio_output_t *p_aout, bool alive);
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AudioUnit au_NewOutputInstance(audio_output_t *p_aout, OSType comp_sub_type);
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int au_Initialize(audio_output_t *p_aout, AudioUnit au,
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audio_sample_format_t *fmt,
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const AudioChannelLayout *outlayout, vlc_tick_t i_dev_latency_us,
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bool *warn_configuration);
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void au_Uninitialize(audio_output_t *p_aout, AudioUnit au);
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