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[client] audio/pw: implement record support

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This commit is contained in:
Geoffrey McRae 2022-01-07 00:54:44 +11:00
parent 52f06ec332
commit 7263159428
1 changed files with 176 additions and 17 deletions
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193
client/audiodevs/PipeWire/pipewire.c
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@ -27,6 +27,7 @@
#include "common/debug.h"
#include "common/ringbuffer.h"
#include "common/util.h"
struct PipeWire
{
@ -45,11 +46,24 @@ struct PipeWire
bool active;
}
playback;
struct
{
struct pw_stream * stream;
int channels;
int sampleRate;
int stride;
void (*dataFn)(uint8_t * data, size_t size);
bool active;
}
record;
};
static struct PipeWire pw = {0};
static void pipewire_on_process(void * userdata)
static void pipewire_onPlaybackProcess(void * userdata)
{
struct pw_buffer * pbuf;
@ -130,20 +144,6 @@ static void pipewire_playbackStopStream(void)
pw_thread_loop_unlock(pw.thread);
}
static void pipewire_free(void)
{
pipewire_playbackStopStream();
pw_thread_loop_stop(pw.thread);
pw_thread_loop_destroy(pw.thread);
pw_loop_destroy(pw.loop);
pw.loop = NULL;
pw.thread = NULL;
ringbuffer_free(&pw.playback.buffer);
pw_deinit();
}
static void pipewire_playbackStart(int channels, int sampleRate)
{
const struct spa_pod * params[1];
@ -152,7 +152,7 @@ static void pipewire_playbackStart(int channels, int sampleRate)
static const struct pw_stream_events events =
{
.version = PW_VERSION_STREAM_EVENTS,
.process = pipewire_on_process
.process = pipewire_onPlaybackProcess
};
if (pw.playback.stream &&
@ -165,7 +165,8 @@ static void pipewire_playbackStart(int channels, int sampleRate)
pw.playback.channels = channels;
pw.playback.sampleRate = sampleRate;
pw.playback.stride = sizeof(uint16_t) * channels;
pw.playback.buffer = ringbuffer_new(sampleRate / 10, channels * sizeof(uint16_t));
pw.playback.buffer = ringbuffer_new(sampleRate / 10,
channels * sizeof(uint16_t));
pw_thread_loop_lock(pw.thread);
pw.playback.stream = pw_stream_new_simple(
@ -269,6 +270,157 @@ static void pipewire_playbackMute(bool mute)
pw_thread_loop_unlock(pw.thread);
}
static void pipewire_recordStopStream(void)
{
if (!pw.record.stream)
return;
pw_thread_loop_lock(pw.thread);
pw_stream_flush(pw.record.stream, true);
pw_stream_destroy(pw.record.stream);
pw.record.stream = NULL;
pw_thread_loop_unlock(pw.thread);
}
static void pipewire_onRecordProcess(void * userdata)
{
struct pw_buffer * pbuf;
if (!(pbuf = pw_stream_dequeue_buffer(pw.record.stream)))
{
DEBUG_WARN("out of buffers");
return;
}
struct spa_buffer * sbuf = pbuf->buffer;
uint8_t * dst;
if (!(dst = sbuf->datas[0].data))
return;
dst += sbuf->datas[0].chunk->offset;
pw.record.dataFn(dst,
min(
sbuf->datas[0].chunk->size,
sbuf->datas[0].maxsize - sbuf->datas[0].chunk->offset)
);
pw_stream_queue_buffer(pw.record.stream, pbuf);
}
static void pipewire_recordStart(int channels, int sampleRate,
void (*dataFn)(uint8_t * data, size_t size))
{
const struct spa_pod * params[1];
uint8_t buffer[1024];
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
static const struct pw_stream_events events =
{
.version = PW_VERSION_STREAM_EVENTS,
.process = pipewire_onRecordProcess
};
if (pw.record.stream &&
pw.record.channels == channels &&
pw.record.sampleRate == sampleRate)
return;
pipewire_recordStopStream();
pw.record.channels = channels;
pw.record.sampleRate = sampleRate;
pw.record.stride = sizeof(uint16_t) * channels;
pw.record.dataFn = dataFn;
pw_thread_loop_lock(pw.thread);
pw.record.stream = pw_stream_new_simple(
pw.loop,
"Looking Glass",
pw_properties_new(
PW_KEY_NODE_NAME , "Looking Glass",
PW_KEY_MEDIA_TYPE , "Audio",
PW_KEY_MEDIA_CATEGORY, "Capture",
PW_KEY_MEDIA_ROLE , "Music",
NULL
),
&events,
NULL
);
if (!pw.record.stream)
{
pw_thread_loop_unlock(pw.thread);
DEBUG_ERROR("Failed to create the stream");
return;
}
params[0] = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat,
&SPA_AUDIO_INFO_RAW_INIT(
.format = SPA_AUDIO_FORMAT_S16,
.channels = channels,
.rate = sampleRate
));
pw_stream_connect(
pw.record.stream,
PW_DIRECTION_INPUT,
PW_ID_ANY,
PW_STREAM_FLAG_AUTOCONNECT |
PW_STREAM_FLAG_MAP_BUFFERS |
PW_STREAM_FLAG_RT_PROCESS,
params, 1);
pw_thread_loop_unlock(pw.thread);
}
static void pipewire_recordStop(void)
{
if (!pw.record.active)
return;
pw_thread_loop_lock(pw.thread);
pw_stream_set_active(pw.record.stream, false);
pw.record.active = false;
pw_thread_loop_unlock(pw.thread);
}
static void pipewire_recordVolume(int channels, const uint16_t volume[])
{
if (channels != pw.record.channels)
return;
float param[channels];
for(int i = 0; i < channels; ++i)
param[i] = 9.3234e-7 * pow(1.000211902, volume[i]) - 0.000172787;
pw_thread_loop_lock(pw.thread);
pw_stream_set_control(pw.record.stream, SPA_PROP_channelVolumes,
channels, param, 0);
pw_thread_loop_unlock(pw.thread);
}
static void pipewire_recordMute(bool mute)
{
pw_thread_loop_lock(pw.thread);
pw_stream_set_control(pw.record.stream, SPA_PROP_mute, 1, (void *)&mute, 0);
pw_thread_loop_unlock(pw.thread);
}
static void pipewire_free(void)
{
pipewire_playbackStopStream();
pipewire_recordStopStream();
pw_thread_loop_stop(pw.thread);
pw_thread_loop_destroy(pw.thread);
pw_loop_destroy(pw.loop);
pw.loop = NULL;
pw.thread = NULL;
ringbuffer_free(&pw.playback.buffer);
pw_deinit();
}
struct LG_AudioDevOps LGAD_PipeWire =
{
.name = "PipeWire",
@ -281,5 +433,12 @@ struct LG_AudioDevOps LGAD_PipeWire =
.stop = pipewire_playbackStop,
.volume = pipewire_playbackVolume,
.mute = pipewire_playbackMute
},
.record =
{
.start = pipewire_recordStart,
.stop = pipewire_recordStop,
.volume = pipewire_recordVolume,
.mute = pipewire_recordMute
}
};