Mike Brady
83c0405d03
Improve support for big-endian CPUs by adding support for explicit -endian formats, i.e. S16_LE, S16_BE, S24_LE, S24_BE, S32_LE, S32_BE. For the "disable_standby_mode" setting, change "while_active" to "auto".
229 lines
7.3 KiB
C
229 lines
7.3 KiB
C
#include "audio.h"
|
|
#include "common.h"
|
|
#include <memory.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include <soundio/soundio.h>
|
|
|
|
int Fs;
|
|
long long starttime, samples_played;
|
|
|
|
struct SoundIoOutStream *outstream;
|
|
struct SoundIo *soundio;
|
|
struct SoundIoDevice *device;
|
|
struct SoundIoRingBuffer *ring_buffer = NULL;
|
|
|
|
static int min_int(int a, int b) { return (a < b) ? a : b; }
|
|
|
|
static void write_callback(struct SoundIoOutStream *outstream, int frame_count_min,
|
|
int frame_count_max) {
|
|
struct SoundIoChannelArea *areas;
|
|
// int frame_count;
|
|
int err;
|
|
|
|
char *read_ptr = soundio_ring_buffer_read_ptr(ring_buffer);
|
|
int fill_bytes = soundio_ring_buffer_fill_count(ring_buffer);
|
|
int fill_count = fill_bytes / outstream->bytes_per_frame;
|
|
|
|
debug(3,
|
|
"[--->>] frame_count_min: %d , frame_count_max: %d , fill_bytes: %d , fill_count: %d , "
|
|
"outstream->bytes_per_frame: %d",
|
|
frame_count_min, frame_count_max, fill_bytes, fill_count, outstream->bytes_per_frame);
|
|
|
|
if (frame_count_min > fill_count) {
|
|
int frame_count = frame_count_min;
|
|
if ((err = soundio_outstream_begin_write(outstream, &areas, &frame_count))) {
|
|
debug(0, "[--->>] begin write error: %s", soundio_strerror(err));
|
|
}
|
|
for (int frame = 0; frame < frame_count; frame += 1) {
|
|
for (int ch = 0; ch < outstream->layout.channel_count; ch += 1) {
|
|
memset(areas[ch].ptr, 0, outstream->bytes_per_sample);
|
|
areas[ch].ptr += areas[ch].step;
|
|
}
|
|
}
|
|
if ((err = soundio_outstream_end_write(outstream)))
|
|
debug(0, "[--->>] end write error: %s", soundio_strerror(err));
|
|
return;
|
|
}
|
|
|
|
int read_count = min_int(frame_count_max, fill_count);
|
|
int frames_left = read_count;
|
|
|
|
while (frames_left > 0) {
|
|
int frame_count = frames_left;
|
|
|
|
if ((err = soundio_outstream_begin_write(outstream, &areas, &frame_count)))
|
|
debug(0, "[--->>] begin write error: %s", soundio_strerror(err));
|
|
|
|
if (frame_count <= 0)
|
|
break;
|
|
|
|
for (int frame = 0; frame < frame_count; frame += 1) {
|
|
for (int ch = 0; ch < outstream->layout.channel_count; ch += 1) {
|
|
memcpy(areas[ch].ptr, read_ptr, outstream->bytes_per_sample);
|
|
areas[ch].ptr += areas[ch].step;
|
|
read_ptr += outstream->bytes_per_sample;
|
|
}
|
|
}
|
|
|
|
if ((err = soundio_outstream_end_write(outstream)))
|
|
debug(0, "[--->>] end write error: %s", soundio_strerror(err));
|
|
|
|
frames_left -= frame_count;
|
|
}
|
|
|
|
debug(3, "[--->>] Wrote: %d", read_count * outstream->bytes_per_frame);
|
|
soundio_ring_buffer_advance_read_ptr(ring_buffer, read_count * outstream->bytes_per_frame);
|
|
}
|
|
|
|
static void underflow_callback(__attribute__((unused)) struct SoundIoOutStream *outstream) {
|
|
static int count = 0;
|
|
debug(0, "underflow %d\n", ++count);
|
|
}
|
|
|
|
static int init(__attribute__((unused)) int argc, __attribute__((unused)) char **argv) {
|
|
int err;
|
|
|
|
config.audio_backend_buffer_desired_length = 2.0;
|
|
config.audio_backend_latency_offset = 0;
|
|
|
|
// get settings from settings file
|
|
|
|
// do the "general" audio options. Note, these options are in the "general" stanza!
|
|
parse_general_audio_options();
|
|
|
|
// get the specific settings
|
|
|
|
soundio = soundio_create();
|
|
if (!soundio) {
|
|
debug(0, "out of memory\n");
|
|
return 1;
|
|
}
|
|
if ((err = soundio_connect_backend(soundio, SoundIoBackendCoreAudio))) {
|
|
debug(0, "error connecting: %s", soundio_strerror(err));
|
|
return 1;
|
|
}
|
|
soundio_flush_events(soundio);
|
|
|
|
int default_out_device_index = soundio_default_output_device_index(soundio);
|
|
if (default_out_device_index < 0) {
|
|
debug(0, "no output device found");
|
|
return 1;
|
|
}
|
|
|
|
device = soundio_get_output_device(soundio, default_out_device_index);
|
|
if (!device) {
|
|
debug(0, "out of memory");
|
|
return 1;
|
|
}
|
|
debug(0, "Output device: %s\n", device->name);
|
|
return 0;
|
|
}
|
|
|
|
static void deinit(void) {
|
|
soundio_ring_buffer_destroy(ring_buffer);
|
|
soundio_device_unref(device);
|
|
soundio_destroy(soundio);
|
|
debug(0, "soundio audio deinit\n");
|
|
}
|
|
|
|
static void start(int sample_rate, int sample_format) {
|
|
Fs = sample_rate;
|
|
starttime = 0;
|
|
samples_played = 0;
|
|
int err;
|
|
|
|
debug(1, "soundion rate: %d, format: %d", sample_rate, sample_format);
|
|
|
|
// soundio_device_sort_channel_layouts(device);
|
|
|
|
outstream = soundio_outstream_create(device);
|
|
outstream->format = SoundIoFormatS16NE;
|
|
outstream->sample_rate = sample_rate;
|
|
outstream->layout.channel_count = 2;
|
|
outstream->write_callback = write_callback;
|
|
outstream->underflow_callback = underflow_callback;
|
|
// outstream->software_latency = 0;
|
|
|
|
if ((err = soundio_outstream_open(outstream))) {
|
|
debug(0, "unable to open device: %s", soundio_strerror(err));
|
|
}
|
|
if (outstream->layout_error)
|
|
debug(0, "unable to set channel layout: %s\n", soundio_strerror(outstream->layout_error));
|
|
|
|
int capacity = outstream->sample_rate * outstream->bytes_per_frame;
|
|
ring_buffer = soundio_ring_buffer_create(soundio, capacity);
|
|
if (!ring_buffer)
|
|
debug(0, "unable to create ring buffer: out of memory");
|
|
char *buf = soundio_ring_buffer_write_ptr(ring_buffer);
|
|
memset(buf, 0, capacity);
|
|
soundio_ring_buffer_advance_write_ptr(ring_buffer, capacity);
|
|
|
|
if ((err = soundio_outstream_start(outstream))) {
|
|
debug(0, "unable to start outstream: %s", soundio_strerror(err));
|
|
}
|
|
|
|
debug(1, "libsoundio output started\n");
|
|
}
|
|
|
|
static int play(void *buf, int samples) {
|
|
// int err;
|
|
int free_bytes = soundio_ring_buffer_free_count(ring_buffer);
|
|
int written_bytes = 0;
|
|
int write_bytes = 0;
|
|
int left_bytes = samples * outstream->bytes_per_frame;
|
|
char *write_ptr = soundio_ring_buffer_write_ptr(ring_buffer);
|
|
|
|
debug(3, "[<<---] samples: %d , size: %d", samples, left_bytes);
|
|
write_bytes = min_int(left_bytes, free_bytes);
|
|
debug(3, "[<<---] left_bytes: %d, write_bytes: %d, free_bytes: %d\n", left_bytes, write_bytes,
|
|
free_bytes);
|
|
|
|
if (write_bytes) {
|
|
memcpy(write_ptr, buf, write_bytes);
|
|
written_bytes += write_bytes;
|
|
soundio_ring_buffer_advance_write_ptr(ring_buffer, write_bytes);
|
|
debug(3, "[<<---] Written to buffer : %d\n", written_bytes);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void parameters(audio_parameters *info) {
|
|
info->minimum_volume_dB = -30.0;
|
|
info->maximum_volume_dB = 0.0;
|
|
debug(2, "Parameters\n");
|
|
debug(2, "Current Volume dB: %f\n", info->current_volume_dB);
|
|
debug(2, "Minimum Volume dB: %d\n", info->minimum_volume_dB);
|
|
debug(2, "Maximum Volume dB: %d\n", info->maximum_volume_dB);
|
|
}
|
|
|
|
static void stop(void) {
|
|
soundio_outstream_destroy(outstream);
|
|
soundio_ring_buffer_clear(ring_buffer);
|
|
debug(1, "libsoundio output stopped\n");
|
|
}
|
|
|
|
static void flush(void) {
|
|
soundio_ring_buffer_clear(ring_buffer);
|
|
debug(1, "libsoundio output flushed\n");
|
|
}
|
|
|
|
static void help(void) { printf(" There are no options for libsoundio.\n"); }
|
|
|
|
audio_output audio_soundio = {.name = "soundio",
|
|
.help = &help,
|
|
.init = &init,
|
|
.deinit = &deinit,
|
|
.prepare = NULL,
|
|
.start = &start,
|
|
.stop = &stop,
|
|
.is_running = NULL,
|
|
.flush = &flush,
|
|
.delay = NULL,
|
|
.play = &play,
|
|
.volume = NULL,
|
|
.parameters = ¶meters,
|
|
.mute = NULL};
|