mirror of
https://github.com/mpv-player/mpv
synced 2025-01-08 16:10:29 +00:00
ao_jack: switch from interleaved to planar audio
This commit is contained in:
William Light
wm4
parent
4bd690c998
commit
e1656d369a
@ -4,6 +4,8 @@
|
||||
* Copyleft 2001 by Felix Bünemann (atmosfear@users.sf.net)
|
||||
* and Reimar Döffinger (Reimar.Doeffinger@stud.uni-karlsruhe.de)
|
||||
*
|
||||
* Copyleft 2013 by William Light <wrl@illest.net> for the mpv project
|
||||
*
|
||||
* This file is part of MPlayer.
|
||||
*
|
||||
* MPlayer is free software; you can redistribute it and/or modify
|
||||
@ -40,15 +42,17 @@
|
||||
|
||||
//! size of one chunk, if this is too small MPlayer will start to "stutter"
|
||||
//! after a short time of playback
|
||||
#define CHUNK_SIZE (24 * 1024)
|
||||
#define CHUNK_SIZE (8 * 1024)
|
||||
//! number of "virtual" chunks the buffer consists of
|
||||
#define NUM_CHUNKS 8
|
||||
|
||||
struct port_ring {
|
||||
jack_port_t *port;
|
||||
struct mp_ring *ring;
|
||||
};
|
||||
|
||||
struct priv {
|
||||
jack_port_t * ports[MP_NUM_CHANNELS];
|
||||
int num_ports; // Number of used ports == number of channels
|
||||
jack_client_t *client;
|
||||
int outburst;
|
||||
float jack_latency;
|
||||
char *cfg_port;
|
||||
char *cfg_client_name;
|
||||
@ -57,76 +61,49 @@ struct priv {
|
||||
int autostart;
|
||||
int stdlayout;
|
||||
volatile int paused;
|
||||
volatile int underrun; // signals if an underrun occured
|
||||
volatile int underrun;
|
||||
volatile float callback_interval;
|
||||
volatile float callback_time;
|
||||
struct mp_ring *ring; // buffer for audio data
|
||||
|
||||
int num_ports;
|
||||
struct port_ring ports[MP_NUM_CHANNELS];
|
||||
};
|
||||
|
||||
static void silence(float **bufs, int cnt, int num_bufs);
|
||||
|
||||
struct deinterleave {
|
||||
float **bufs;
|
||||
int num_bufs;
|
||||
int cur_buf;
|
||||
int pos;
|
||||
};
|
||||
|
||||
static void deinterleave(void *info, void *src, int len)
|
||||
{
|
||||
struct deinterleave *di = info;
|
||||
float *s = src;
|
||||
int i;
|
||||
len /= sizeof(float);
|
||||
for (i = 0; i < len; i++) {
|
||||
di->bufs[di->cur_buf++][di->pos] = s[i];
|
||||
if (di->cur_buf >= di->num_bufs) {
|
||||
di->cur_buf = 0;
|
||||
di->pos++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* \brief read data from buffer and splitting it into channels
|
||||
* \param bufs num_bufs float buffers, each will contain the data of one channel
|
||||
* \param cnt number of samples to read per channel
|
||||
* \param num_bufs number of channels to split the data into
|
||||
* \return number of samples read per channel, equals cnt unless there was too
|
||||
* little data in the buffer
|
||||
*
|
||||
* Assumes the data in the buffer is of type float, the number of bytes
|
||||
* read is res * num_bufs * sizeof(float), where res is the return value.
|
||||
* If there is not enough data in the buffer remaining parts will be filled
|
||||
* with silence.
|
||||
*/
|
||||
static int read_buffer(struct mp_ring *ring, float **bufs, int cnt, int num_bufs)
|
||||
{
|
||||
struct deinterleave di = {
|
||||
bufs, num_bufs, 0, 0
|
||||
};
|
||||
int buffered = mp_ring_buffered(ring);
|
||||
if (cnt * sizeof(float) * num_bufs > buffered) {
|
||||
silence(bufs, cnt, num_bufs);
|
||||
cnt = buffered / sizeof(float) / num_bufs;
|
||||
}
|
||||
mp_ring_read_cb(ring, &di, cnt * num_bufs * sizeof(float), deinterleave);
|
||||
return cnt;
|
||||
}
|
||||
|
||||
// end ring buffer stuff
|
||||
|
||||
/**
|
||||
* \brief fill the buffers with silence
|
||||
* \param bufs num_bufs float buffers, each will contain the data of one channel
|
||||
* \param cnt number of samples in each buffer
|
||||
* \param num_bufs number of buffers
|
||||
*/
|
||||
static void silence(float **bufs, int cnt, int num_bufs)
|
||||
static void
|
||||
silence(float *buf, jack_nframes_t nframes)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < num_bufs; i++)
|
||||
memset(bufs[i], 0, cnt * sizeof(float));
|
||||
memset(buf, 0, nframes * sizeof(*buf));
|
||||
}
|
||||
|
||||
static int
|
||||
process_port(struct ao *ao, struct port_ring *pr, jack_nframes_t nframes)
|
||||
{
|
||||
struct priv *p = ao->priv;
|
||||
int buffered;
|
||||
float *buf;
|
||||
|
||||
buf = jack_port_get_buffer(pr->port, nframes);
|
||||
|
||||
if (p->paused || p->underrun) {
|
||||
silence(buf, nframes);
|
||||
return 0;
|
||||
}
|
||||
|
||||
buffered = mp_ring_buffered(pr->ring) / sizeof(float);
|
||||
if (buffered < nframes) {
|
||||
mp_ring_read(pr->ring, (void *) buf, buffered * sizeof(float));
|
||||
silence(&buf[buffered], nframes - buffered);
|
||||
return 1;
|
||||
}
|
||||
|
||||
mp_ring_read(pr->ring, (void *) buf, nframes * sizeof(float));
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -137,18 +114,23 @@ static void silence(float **bufs, int cnt, int num_bufs)
|
||||
*
|
||||
* Write silence into buffers if paused or an underrun occured
|
||||
*/
|
||||
static int outputaudio(jack_nframes_t nframes, void *arg)
|
||||
static int
|
||||
process(jack_nframes_t nframes, void *arg)
|
||||
{
|
||||
struct ao *ao = arg;
|
||||
struct priv *p = ao->priv;
|
||||
float *bufs[MP_NUM_CHANNELS];
|
||||
int i;
|
||||
for (i = 0; i < p->num_ports; i++)
|
||||
bufs[i] = jack_port_get_buffer(p->ports[i], nframes);
|
||||
if (p->paused || p->underrun || !p->ring)
|
||||
silence(bufs, nframes, p->num_ports);
|
||||
else if (read_buffer(p->ring, bufs, nframes, p->num_ports) < nframes)
|
||||
int i, underrun;
|
||||
|
||||
underrun = 0;
|
||||
|
||||
for (i = 0; i < p->num_ports; i++) {
|
||||
if (process_port(ao, &p->ports[i], nframes))
|
||||
underrun = 1;
|
||||
}
|
||||
|
||||
if (underrun)
|
||||
p->underrun = 1;
|
||||
|
||||
if (p->estimate) {
|
||||
float now = mp_time_us() / 1000000.0;
|
||||
float diff = p->callback_time + p->callback_interval - now;
|
||||
@ -158,6 +140,7 @@ static int outputaudio(jack_nframes_t nframes, void *arg)
|
||||
p->callback_time = now;
|
||||
p->callback_interval = (float)nframes / (float)ao->samplerate;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -182,9 +165,8 @@ connect_to_outports(struct ao *ao)
|
||||
}
|
||||
|
||||
for (i = 0; i < p->num_ports && matching_ports[i]; i++) {
|
||||
if (jack_connect(p->client, jack_port_name(p->ports[i]),
|
||||
matching_ports[i]))
|
||||
{
|
||||
if (jack_connect(p->client, jack_port_name(p->ports[i].port),
|
||||
matching_ports[i])) {
|
||||
MP_FATAL(ao, "connecting failed\n");
|
||||
goto err_connect;
|
||||
}
|
||||
@ -203,20 +185,23 @@ static int
|
||||
create_ports(struct ao *ao, int nports)
|
||||
{
|
||||
struct priv *p = ao->priv;
|
||||
struct port_ring *pr;
|
||||
char pname[30];
|
||||
int i;
|
||||
|
||||
/* register our output ports */
|
||||
for (i = 0; i < nports; i++) {
|
||||
char pname[30];
|
||||
snprintf(pname, sizeof(pname), "out_%d", i);
|
||||
p->ports[i] =
|
||||
jack_port_register(p->client, pname, JACK_DEFAULT_AUDIO_TYPE,
|
||||
JackPortIsOutput, 0);
|
||||
pr = &p->ports[i];
|
||||
|
||||
if (!p->ports[i]) {
|
||||
snprintf(pname, sizeof(pname), "out_%d", i);
|
||||
pr->port = jack_port_register(p->client, pname, JACK_DEFAULT_AUDIO_TYPE,
|
||||
JackPortIsOutput, 0);
|
||||
|
||||
if (!pr->port) {
|
||||
MP_FATAL(ao, "not enough ports available\n");
|
||||
goto err_port_register;
|
||||
}
|
||||
|
||||
pr->ring = mp_ring_new(p, NUM_CHUNKS * CHUNK_SIZE);
|
||||
}
|
||||
|
||||
p->num_ports = nports;
|
||||
@ -232,6 +217,8 @@ static int init(struct ao *ao)
|
||||
struct mp_chmap_sel sel = {0};
|
||||
jack_options_t open_options;
|
||||
|
||||
ao->format = AF_FORMAT_FLOATP;
|
||||
|
||||
switch (p->stdlayout) {
|
||||
case 0:
|
||||
mp_chmap_sel_add_waveext(&sel);
|
||||
@ -261,7 +248,7 @@ static int init(struct ao *ao)
|
||||
if (create_ports(ao, ao->channels.num))
|
||||
goto err_create_ports;
|
||||
|
||||
jack_set_process_callback(p->client, outputaudio, ao);
|
||||
jack_set_process_callback(p->client, process, ao);
|
||||
|
||||
if (jack_activate(p->client)) {
|
||||
MP_FATAL(ao, "activate failed\n");
|
||||
@ -275,7 +262,7 @@ static int init(struct ao *ao)
|
||||
goto err_connect;
|
||||
|
||||
jack_latency_range_t jack_latency_range;
|
||||
jack_port_get_latency_range(p->ports[0], JackPlaybackLatency,
|
||||
jack_port_get_latency_range(p->ports[0].port, JackPlaybackLatency,
|
||||
&jack_latency_range);
|
||||
p->jack_latency = (float)(jack_latency_range.max + jack_get_buffer_size(p->client))
|
||||
/ (float)ao->samplerate;
|
||||
@ -284,10 +271,6 @@ static int init(struct ao *ao)
|
||||
if (!ao_chmap_sel_get_def(ao, &sel, &ao->channels, p->num_ports))
|
||||
goto err_chmap_sel_get_def;
|
||||
|
||||
ao->format = AF_FORMAT_FLOAT_NE;
|
||||
int unitsize = ao->channels.num * sizeof(float);
|
||||
p->outburst = (CHUNK_SIZE + unitsize - 1) / unitsize * unitsize;
|
||||
p->ring = mp_ring_new(p, NUM_CHUNKS * p->outburst);
|
||||
return 0;
|
||||
|
||||
err_chmap_sel_get_def:
|
||||
@ -304,14 +287,16 @@ err_chmap:
|
||||
static float get_delay(struct ao *ao)
|
||||
{
|
||||
struct priv *p = ao->priv;
|
||||
int buffered = mp_ring_buffered(p->ring); // could be less
|
||||
int buffered = mp_ring_buffered(p->ports[0].ring); // could be less
|
||||
float in_jack = p->jack_latency;
|
||||
|
||||
if (p->estimate && p->callback_interval > 0) {
|
||||
float elapsed = mp_time_us() / 1000000.0 - p->callback_time;
|
||||
in_jack += p->callback_interval - elapsed;
|
||||
if (in_jack < 0)
|
||||
in_jack = 0;
|
||||
}
|
||||
|
||||
return (float)buffered / (float)ao->bps + in_jack;
|
||||
}
|
||||
|
||||
@ -321,8 +306,12 @@ static float get_delay(struct ao *ao)
|
||||
static void reset(struct ao *ao)
|
||||
{
|
||||
struct priv *p = ao->priv;
|
||||
int i;
|
||||
p->paused = 1;
|
||||
mp_ring_reset(p->ring);
|
||||
|
||||
for (i = 0; i < p->num_ports; i++)
|
||||
mp_ring_reset(p->ports[i].ring);
|
||||
|
||||
p->paused = 0;
|
||||
}
|
||||
|
||||
@ -330,10 +319,10 @@ static void reset(struct ao *ao)
|
||||
static void uninit(struct ao *ao, bool immed)
|
||||
{
|
||||
struct priv *p = ao->priv;
|
||||
|
||||
if (!immed)
|
||||
mp_sleep_us(get_delay(ao) * 1000 * 1000);
|
||||
// HACK, make sure jack doesn't loop-output dirty buffers
|
||||
reset(ao);
|
||||
|
||||
mp_sleep_us(100 * 1000);
|
||||
jack_client_close(p->client);
|
||||
}
|
||||
@ -359,7 +348,7 @@ static void audio_resume(struct ao *ao)
|
||||
static int get_space(struct ao *ao)
|
||||
{
|
||||
struct priv *p = ao->priv;
|
||||
return mp_ring_available(p->ring) / ao->sstride;
|
||||
return mp_ring_available(p->ports[0].ring) / ao->sstride;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -368,11 +357,19 @@ static int get_space(struct ao *ao)
|
||||
static int play(struct ao *ao, void **data, int samples, int flags)
|
||||
{
|
||||
struct priv *p = ao->priv;
|
||||
int len = samples * ao->sstride;
|
||||
if (!(flags & AOPLAY_FINAL_CHUNK))
|
||||
len -= len % p->outburst;
|
||||
struct port_ring *pr;
|
||||
int i, len, ret;
|
||||
|
||||
len = samples * ao->sstride;
|
||||
ret = 0;
|
||||
|
||||
for (i = 0; i < p->num_ports; i++) {
|
||||
pr = &p->ports[i];
|
||||
ret = mp_ring_write(pr->ring, data[i], len);
|
||||
}
|
||||
|
||||
p->underrun = 0;
|
||||
return mp_ring_write(p->ring, data[0], len) / ao->sstride;
|
||||
return ret / ao->sstride;
|
||||
}
|
||||
|
||||
#define OPT_BASE_STRUCT struct priv
|
||||
@ -401,7 +398,7 @@ const struct ao_driver audio_out_jack = {
|
||||
OPT_FLAG("autostart", autostart, 0),
|
||||
OPT_FLAG("connect", connect, 0),
|
||||
OPT_CHOICE("std-channel-layout", stdlayout, 0,
|
||||
({"waveext", 0}, {"alsa", 1}, {"any", 2})),
|
||||
({"waveext", 0}, {"alsa", 1}, {"any", 2})),
|
||||
{0}
|
||||
},
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user