qemu/replay/replay-audio.c
Pavel Dovgalyuk 3d4d16f4dc replay: add record/replay for audio passthrough
This patch adds recording and replaying audio data. Is saves synchronization
information for audio out and inputs from the microphone.

v2: removed unneeded whitespace change

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-id: 20170202055054.4848.94901.stgit@PASHA-ISP.lan02.inno

[ kraxel: add qemu/error-report.h include to fix osx build failure ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-03-01 15:11:44 +01:00

80 lines
2.5 KiB
C

/*
* replay-audio.c
*
* Copyright (c) 2010-2017 Institute for System Programming
* of the Russian Academy of Sciences.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "sysemu/replay.h"
#include "replay-internal.h"
#include "sysemu/sysemu.h"
#include "audio/audio.h"
void replay_audio_out(int *played)
{
if (replay_mode == REPLAY_MODE_RECORD) {
replay_save_instructions();
replay_mutex_lock();
replay_put_event(EVENT_AUDIO_OUT);
replay_put_dword(*played);
replay_mutex_unlock();
} else if (replay_mode == REPLAY_MODE_PLAY) {
replay_account_executed_instructions();
replay_mutex_lock();
if (replay_next_event_is(EVENT_AUDIO_OUT)) {
*played = replay_get_dword();
replay_finish_event();
replay_mutex_unlock();
} else {
replay_mutex_unlock();
error_report("Missing audio out event in the replay log");
abort();
}
}
}
void replay_audio_in(int *recorded, void *samples, int *wpos, int size)
{
int pos;
uint64_t left, right;
if (replay_mode == REPLAY_MODE_RECORD) {
replay_save_instructions();
replay_mutex_lock();
replay_put_event(EVENT_AUDIO_IN);
replay_put_dword(*recorded);
replay_put_dword(*wpos);
for (pos = (*wpos - *recorded + size) % size ; pos != *wpos
; pos = (pos + 1) % size) {
audio_sample_to_uint64(samples, pos, &left, &right);
replay_put_qword(left);
replay_put_qword(right);
}
replay_mutex_unlock();
} else if (replay_mode == REPLAY_MODE_PLAY) {
replay_account_executed_instructions();
replay_mutex_lock();
if (replay_next_event_is(EVENT_AUDIO_IN)) {
*recorded = replay_get_dword();
*wpos = replay_get_dword();
for (pos = (*wpos - *recorded + size) % size ; pos != *wpos
; pos = (pos + 1) % size) {
left = replay_get_qword();
right = replay_get_qword();
audio_sample_from_uint64(samples, pos, left, right);
}
replay_finish_event();
replay_mutex_unlock();
} else {
replay_mutex_unlock();
error_report("Missing audio in event in the replay log");
abort();
}
}
}