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ed2a4a7941
This adds proper support for float samples in mixeng by adding a new audio format for it. Limitations: only native endianness is supported. None of the virtual sound cards support float samples (it looks like most of them only support 8 and 16 bit, only hda supports 32 bit), it is only used for the audio backends (i.e. host side). Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com> Acked-by: Markus Armbruster <armbru@redhat.com> Message-id: 8a8b0b5698401b78d3c4c8ec90aef83b95babb06.1580672076.git.DirtY.iCE.hu@gmail.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
893 lines
23 KiB
C
893 lines
23 KiB
C
/* public domain */
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#include "qemu/osdep.h"
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#include "qemu/module.h"
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#include "qemu-common.h"
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#include "audio.h"
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#include "qapi/opts-visitor.h"
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#include <pulse/pulseaudio.h>
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#define AUDIO_CAP "pulseaudio"
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#include "audio_int.h"
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typedef struct PAConnection {
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char *server;
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int refcount;
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QTAILQ_ENTRY(PAConnection) list;
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pa_threaded_mainloop *mainloop;
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pa_context *context;
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} PAConnection;
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static QTAILQ_HEAD(PAConnectionHead, PAConnection) pa_conns =
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QTAILQ_HEAD_INITIALIZER(pa_conns);
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typedef struct {
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Audiodev *dev;
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PAConnection *conn;
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} paaudio;
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typedef struct {
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HWVoiceOut hw;
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pa_stream *stream;
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paaudio *g;
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} PAVoiceOut;
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typedef struct {
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HWVoiceIn hw;
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pa_stream *stream;
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const void *read_data;
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size_t read_length;
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paaudio *g;
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} PAVoiceIn;
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static void qpa_conn_fini(PAConnection *c);
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static void GCC_FMT_ATTR (2, 3) qpa_logerr (int err, const char *fmt, ...)
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{
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va_list ap;
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va_start (ap, fmt);
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AUD_vlog (AUDIO_CAP, fmt, ap);
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va_end (ap);
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AUD_log (AUDIO_CAP, "Reason: %s\n", pa_strerror (err));
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}
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#ifndef PA_CONTEXT_IS_GOOD
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static inline int PA_CONTEXT_IS_GOOD(pa_context_state_t x)
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{
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return
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x == PA_CONTEXT_CONNECTING ||
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x == PA_CONTEXT_AUTHORIZING ||
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x == PA_CONTEXT_SETTING_NAME ||
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x == PA_CONTEXT_READY;
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}
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#endif
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#ifndef PA_STREAM_IS_GOOD
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static inline int PA_STREAM_IS_GOOD(pa_stream_state_t x)
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{
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return
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x == PA_STREAM_CREATING ||
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x == PA_STREAM_READY;
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}
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#endif
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#define CHECK_SUCCESS_GOTO(c, expression, label, msg) \
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do { \
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if (!(expression)) { \
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qpa_logerr(pa_context_errno((c)->context), msg); \
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goto label; \
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} \
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} while (0)
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#define CHECK_DEAD_GOTO(c, stream, label, msg) \
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do { \
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if (!(c)->context || !PA_CONTEXT_IS_GOOD (pa_context_get_state((c)->context)) || \
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!(stream) || !PA_STREAM_IS_GOOD (pa_stream_get_state ((stream)))) { \
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if (((c)->context && pa_context_get_state ((c)->context) == PA_CONTEXT_FAILED) || \
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((stream) && pa_stream_get_state ((stream)) == PA_STREAM_FAILED)) { \
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qpa_logerr(pa_context_errno((c)->context), msg); \
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} else { \
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qpa_logerr(PA_ERR_BADSTATE, msg); \
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} \
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goto label; \
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} \
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} while (0)
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static void *qpa_get_buffer_in(HWVoiceIn *hw, size_t *size)
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{
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PAVoiceIn *p = (PAVoiceIn *) hw;
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PAConnection *c = p->g->conn;
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int r;
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pa_threaded_mainloop_lock(c->mainloop);
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CHECK_DEAD_GOTO(c, p->stream, unlock_and_fail,
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"pa_threaded_mainloop_lock failed\n");
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if (!p->read_length) {
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r = pa_stream_peek(p->stream, &p->read_data, &p->read_length);
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CHECK_SUCCESS_GOTO(c, r == 0, unlock_and_fail,
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"pa_stream_peek failed\n");
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}
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*size = MIN(p->read_length, *size);
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pa_threaded_mainloop_unlock(c->mainloop);
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return (void *) p->read_data;
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unlock_and_fail:
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pa_threaded_mainloop_unlock(c->mainloop);
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*size = 0;
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return NULL;
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}
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static void qpa_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size)
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{
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PAVoiceIn *p = (PAVoiceIn *) hw;
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PAConnection *c = p->g->conn;
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int r;
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pa_threaded_mainloop_lock(c->mainloop);
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CHECK_DEAD_GOTO(c, p->stream, unlock,
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"pa_threaded_mainloop_lock failed\n");
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assert(buf == p->read_data && size <= p->read_length);
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p->read_data += size;
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p->read_length -= size;
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if (size && !p->read_length) {
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r = pa_stream_drop(p->stream);
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CHECK_SUCCESS_GOTO(c, r == 0, unlock, "pa_stream_drop failed\n");
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}
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unlock:
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pa_threaded_mainloop_unlock(c->mainloop);
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}
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static size_t qpa_read(HWVoiceIn *hw, void *data, size_t length)
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{
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PAVoiceIn *p = (PAVoiceIn *) hw;
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PAConnection *c = p->g->conn;
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size_t total = 0;
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pa_threaded_mainloop_lock(c->mainloop);
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CHECK_DEAD_GOTO(c, p->stream, unlock_and_fail,
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"pa_threaded_mainloop_lock failed\n");
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if (pa_stream_get_state(p->stream) != PA_STREAM_READY) {
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/* wait for stream to become ready */
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goto unlock;
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}
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while (total < length) {
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size_t l;
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int r;
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if (!p->read_length) {
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r = pa_stream_peek(p->stream, &p->read_data, &p->read_length);
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CHECK_SUCCESS_GOTO(c, r == 0, unlock_and_fail,
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"pa_stream_peek failed\n");
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if (!p->read_length) {
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/* buffer is empty */
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break;
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}
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}
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l = MIN(p->read_length, length - total);
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memcpy((char *)data + total, p->read_data, l);
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p->read_data += l;
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p->read_length -= l;
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total += l;
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if (!p->read_length) {
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r = pa_stream_drop(p->stream);
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CHECK_SUCCESS_GOTO(c, r == 0, unlock_and_fail,
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"pa_stream_drop failed\n");
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}
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}
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unlock:
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pa_threaded_mainloop_unlock(c->mainloop);
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return total;
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unlock_and_fail:
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pa_threaded_mainloop_unlock(c->mainloop);
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return 0;
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}
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static void *qpa_get_buffer_out(HWVoiceOut *hw, size_t *size)
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{
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PAVoiceOut *p = (PAVoiceOut *) hw;
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PAConnection *c = p->g->conn;
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void *ret;
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int r;
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pa_threaded_mainloop_lock(c->mainloop);
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CHECK_DEAD_GOTO(c, p->stream, unlock_and_fail,
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"pa_threaded_mainloop_lock failed\n");
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*size = -1;
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r = pa_stream_begin_write(p->stream, &ret, size);
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CHECK_SUCCESS_GOTO(c, r >= 0, unlock_and_fail,
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"pa_stream_begin_write failed\n");
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pa_threaded_mainloop_unlock(c->mainloop);
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return ret;
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unlock_and_fail:
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pa_threaded_mainloop_unlock(c->mainloop);
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*size = 0;
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return NULL;
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}
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static size_t qpa_write(HWVoiceOut *hw, void *data, size_t length)
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{
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PAVoiceOut *p = (PAVoiceOut *) hw;
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PAConnection *c = p->g->conn;
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size_t l;
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int r;
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pa_threaded_mainloop_lock(c->mainloop);
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CHECK_DEAD_GOTO(c, p->stream, unlock_and_fail,
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"pa_threaded_mainloop_lock failed\n");
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l = pa_stream_writable_size(p->stream);
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CHECK_SUCCESS_GOTO(c, l != (size_t) -1, unlock_and_fail,
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"pa_stream_writable_size failed\n");
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if (l > length) {
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l = length;
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}
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r = pa_stream_write(p->stream, data, l, NULL, 0LL, PA_SEEK_RELATIVE);
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CHECK_SUCCESS_GOTO(c, r >= 0, unlock_and_fail, "pa_stream_write failed\n");
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pa_threaded_mainloop_unlock(c->mainloop);
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return l;
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unlock_and_fail:
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pa_threaded_mainloop_unlock(c->mainloop);
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return 0;
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}
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static pa_sample_format_t audfmt_to_pa (AudioFormat afmt, int endianness)
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{
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int format;
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switch (afmt) {
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case AUDIO_FORMAT_S8:
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case AUDIO_FORMAT_U8:
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format = PA_SAMPLE_U8;
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break;
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case AUDIO_FORMAT_S16:
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case AUDIO_FORMAT_U16:
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format = endianness ? PA_SAMPLE_S16BE : PA_SAMPLE_S16LE;
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break;
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case AUDIO_FORMAT_S32:
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case AUDIO_FORMAT_U32:
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format = endianness ? PA_SAMPLE_S32BE : PA_SAMPLE_S32LE;
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break;
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case AUDIO_FORMAT_F32:
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format = endianness ? PA_SAMPLE_FLOAT32BE : PA_SAMPLE_FLOAT32LE;
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break;
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default:
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dolog ("Internal logic error: Bad audio format %d\n", afmt);
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format = PA_SAMPLE_U8;
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break;
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}
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return format;
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}
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static AudioFormat pa_to_audfmt (pa_sample_format_t fmt, int *endianness)
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{
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switch (fmt) {
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case PA_SAMPLE_U8:
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return AUDIO_FORMAT_U8;
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case PA_SAMPLE_S16BE:
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*endianness = 1;
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return AUDIO_FORMAT_S16;
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case PA_SAMPLE_S16LE:
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*endianness = 0;
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return AUDIO_FORMAT_S16;
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case PA_SAMPLE_S32BE:
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*endianness = 1;
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return AUDIO_FORMAT_S32;
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case PA_SAMPLE_S32LE:
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*endianness = 0;
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return AUDIO_FORMAT_S32;
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case PA_SAMPLE_FLOAT32BE:
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*endianness = 1;
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return AUDIO_FORMAT_F32;
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case PA_SAMPLE_FLOAT32LE:
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*endianness = 0;
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return AUDIO_FORMAT_F32;
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default:
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dolog ("Internal logic error: Bad pa_sample_format %d\n", fmt);
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return AUDIO_FORMAT_U8;
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}
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}
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static void context_state_cb (pa_context *c, void *userdata)
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{
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PAConnection *conn = userdata;
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switch (pa_context_get_state(c)) {
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case PA_CONTEXT_READY:
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case PA_CONTEXT_TERMINATED:
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case PA_CONTEXT_FAILED:
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pa_threaded_mainloop_signal(conn->mainloop, 0);
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break;
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case PA_CONTEXT_UNCONNECTED:
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case PA_CONTEXT_CONNECTING:
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case PA_CONTEXT_AUTHORIZING:
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case PA_CONTEXT_SETTING_NAME:
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break;
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}
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}
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static void stream_state_cb (pa_stream *s, void * userdata)
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{
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PAConnection *c = userdata;
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switch (pa_stream_get_state (s)) {
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case PA_STREAM_READY:
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case PA_STREAM_FAILED:
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case PA_STREAM_TERMINATED:
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pa_threaded_mainloop_signal(c->mainloop, 0);
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break;
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case PA_STREAM_UNCONNECTED:
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case PA_STREAM_CREATING:
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break;
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}
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}
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static pa_stream *qpa_simple_new (
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PAConnection *c,
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const char *name,
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pa_stream_direction_t dir,
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const char *dev,
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const pa_sample_spec *ss,
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const pa_buffer_attr *attr,
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int *rerror)
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{
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int r;
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pa_stream *stream = NULL;
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pa_stream_flags_t flags;
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pa_channel_map map;
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pa_threaded_mainloop_lock(c->mainloop);
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pa_channel_map_init(&map);
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map.channels = ss->channels;
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/*
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* TODO: This currently expects the only frontend supporting more than 2
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* channels is the usb-audio. We will need some means to set channel
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* order when a new frontend gains multi-channel support.
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*/
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switch (ss->channels) {
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case 1:
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map.map[0] = PA_CHANNEL_POSITION_MONO;
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break;
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case 2:
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map.map[0] = PA_CHANNEL_POSITION_LEFT;
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map.map[1] = PA_CHANNEL_POSITION_RIGHT;
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break;
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case 6:
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map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
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map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
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map.map[2] = PA_CHANNEL_POSITION_CENTER;
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map.map[3] = PA_CHANNEL_POSITION_LFE;
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map.map[4] = PA_CHANNEL_POSITION_REAR_LEFT;
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map.map[5] = PA_CHANNEL_POSITION_REAR_RIGHT;
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break;
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case 8:
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map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
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map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
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map.map[2] = PA_CHANNEL_POSITION_CENTER;
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map.map[3] = PA_CHANNEL_POSITION_LFE;
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map.map[4] = PA_CHANNEL_POSITION_REAR_LEFT;
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map.map[5] = PA_CHANNEL_POSITION_REAR_RIGHT;
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map.map[6] = PA_CHANNEL_POSITION_SIDE_LEFT;
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map.map[7] = PA_CHANNEL_POSITION_SIDE_RIGHT;
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break;
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default:
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dolog("Internal error: unsupported channel count %d\n", ss->channels);
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goto fail;
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}
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stream = pa_stream_new(c->context, name, ss, &map);
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if (!stream) {
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goto fail;
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}
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pa_stream_set_state_callback(stream, stream_state_cb, c);
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flags =
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PA_STREAM_INTERPOLATE_TIMING
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| PA_STREAM_AUTO_TIMING_UPDATE
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| PA_STREAM_EARLY_REQUESTS;
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if (dev) {
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/* don't move the stream if the user specified a sink/source */
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flags |= PA_STREAM_DONT_MOVE;
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}
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if (dir == PA_STREAM_PLAYBACK) {
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r = pa_stream_connect_playback(stream, dev, attr, flags, NULL, NULL);
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} else {
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r = pa_stream_connect_record(stream, dev, attr, flags);
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}
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if (r < 0) {
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goto fail;
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}
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pa_threaded_mainloop_unlock(c->mainloop);
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return stream;
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fail:
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pa_threaded_mainloop_unlock(c->mainloop);
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if (stream) {
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pa_stream_unref (stream);
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}
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*rerror = pa_context_errno(c->context);
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return NULL;
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}
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static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as,
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void *drv_opaque)
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{
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int error;
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pa_sample_spec ss;
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pa_buffer_attr ba;
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struct audsettings obt_as = *as;
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PAVoiceOut *pa = (PAVoiceOut *) hw;
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paaudio *g = pa->g = drv_opaque;
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AudiodevPaOptions *popts = &g->dev->u.pa;
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AudiodevPaPerDirectionOptions *ppdo = popts->out;
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PAConnection *c = g->conn;
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ss.format = audfmt_to_pa (as->fmt, as->endianness);
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ss.channels = as->nchannels;
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ss.rate = as->freq;
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ba.tlength = pa_usec_to_bytes(ppdo->latency, &ss);
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ba.minreq = -1;
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ba.maxlength = -1;
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ba.prebuf = -1;
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obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
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pa->stream = qpa_simple_new (
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c,
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ppdo->has_stream_name ? ppdo->stream_name : g->dev->id,
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PA_STREAM_PLAYBACK,
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ppdo->has_name ? ppdo->name : NULL,
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&ss,
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&ba, /* buffering attributes */
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&error
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);
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if (!pa->stream) {
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qpa_logerr (error, "pa_simple_new for playback failed\n");
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goto fail1;
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}
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audio_pcm_init_info (&hw->info, &obt_as);
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hw->samples = audio_buffer_samples(
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qapi_AudiodevPaPerDirectionOptions_base(ppdo),
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&obt_as, ppdo->buffer_length);
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return 0;
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fail1:
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return -1;
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}
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static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
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{
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int error;
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pa_sample_spec ss;
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pa_buffer_attr ba;
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struct audsettings obt_as = *as;
|
|
PAVoiceIn *pa = (PAVoiceIn *) hw;
|
|
paaudio *g = pa->g = drv_opaque;
|
|
AudiodevPaOptions *popts = &g->dev->u.pa;
|
|
AudiodevPaPerDirectionOptions *ppdo = popts->in;
|
|
PAConnection *c = g->conn;
|
|
|
|
ss.format = audfmt_to_pa (as->fmt, as->endianness);
|
|
ss.channels = as->nchannels;
|
|
ss.rate = as->freq;
|
|
|
|
ba.fragsize = pa_usec_to_bytes(ppdo->latency, &ss);
|
|
ba.maxlength = pa_usec_to_bytes(ppdo->latency * 2, &ss);
|
|
ba.minreq = -1;
|
|
ba.prebuf = -1;
|
|
|
|
obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
|
|
|
|
pa->stream = qpa_simple_new (
|
|
c,
|
|
ppdo->has_stream_name ? ppdo->stream_name : g->dev->id,
|
|
PA_STREAM_RECORD,
|
|
ppdo->has_name ? ppdo->name : NULL,
|
|
&ss,
|
|
&ba, /* buffering attributes */
|
|
&error
|
|
);
|
|
if (!pa->stream) {
|
|
qpa_logerr (error, "pa_simple_new for capture failed\n");
|
|
goto fail1;
|
|
}
|
|
|
|
audio_pcm_init_info (&hw->info, &obt_as);
|
|
hw->samples = audio_buffer_samples(
|
|
qapi_AudiodevPaPerDirectionOptions_base(ppdo),
|
|
&obt_as, ppdo->buffer_length);
|
|
|
|
return 0;
|
|
|
|
fail1:
|
|
return -1;
|
|
}
|
|
|
|
static void qpa_simple_disconnect(PAConnection *c, pa_stream *stream)
|
|
{
|
|
int err;
|
|
|
|
/*
|
|
* wait until actually connects. workaround pa bug #247
|
|
* https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/247
|
|
*/
|
|
while (pa_stream_get_state(stream) == PA_STREAM_CREATING) {
|
|
pa_threaded_mainloop_wait(c->mainloop);
|
|
}
|
|
|
|
err = pa_stream_disconnect(stream);
|
|
if (err != 0) {
|
|
dolog("Failed to disconnect! err=%d\n", err);
|
|
}
|
|
pa_stream_unref(stream);
|
|
}
|
|
|
|
static void qpa_fini_out (HWVoiceOut *hw)
|
|
{
|
|
PAVoiceOut *pa = (PAVoiceOut *) hw;
|
|
|
|
if (pa->stream) {
|
|
PAConnection *c = pa->g->conn;
|
|
|
|
pa_threaded_mainloop_lock(c->mainloop);
|
|
qpa_simple_disconnect(c, pa->stream);
|
|
pa->stream = NULL;
|
|
pa_threaded_mainloop_unlock(c->mainloop);
|
|
}
|
|
}
|
|
|
|
static void qpa_fini_in (HWVoiceIn *hw)
|
|
{
|
|
PAVoiceIn *pa = (PAVoiceIn *) hw;
|
|
|
|
if (pa->stream) {
|
|
PAConnection *c = pa->g->conn;
|
|
|
|
pa_threaded_mainloop_lock(c->mainloop);
|
|
if (pa->read_length) {
|
|
int r = pa_stream_drop(pa->stream);
|
|
if (r) {
|
|
qpa_logerr(pa_context_errno(c->context),
|
|
"pa_stream_drop failed\n");
|
|
}
|
|
pa->read_length = 0;
|
|
}
|
|
qpa_simple_disconnect(c, pa->stream);
|
|
pa->stream = NULL;
|
|
pa_threaded_mainloop_unlock(c->mainloop);
|
|
}
|
|
}
|
|
|
|
static void qpa_volume_out(HWVoiceOut *hw, Volume *vol)
|
|
{
|
|
PAVoiceOut *pa = (PAVoiceOut *) hw;
|
|
pa_operation *op;
|
|
pa_cvolume v;
|
|
PAConnection *c = pa->g->conn;
|
|
int i;
|
|
|
|
#ifdef PA_CHECK_VERSION /* macro is present in 0.9.16+ */
|
|
pa_cvolume_init (&v); /* function is present in 0.9.13+ */
|
|
#endif
|
|
|
|
v.channels = vol->channels;
|
|
for (i = 0; i < vol->channels; ++i) {
|
|
v.values[i] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * vol->vol[i]) / 255;
|
|
}
|
|
|
|
pa_threaded_mainloop_lock(c->mainloop);
|
|
|
|
op = pa_context_set_sink_input_volume(c->context,
|
|
pa_stream_get_index(pa->stream),
|
|
&v, NULL, NULL);
|
|
if (!op) {
|
|
qpa_logerr(pa_context_errno(c->context),
|
|
"set_sink_input_volume() failed\n");
|
|
} else {
|
|
pa_operation_unref(op);
|
|
}
|
|
|
|
op = pa_context_set_sink_input_mute(c->context,
|
|
pa_stream_get_index(pa->stream),
|
|
vol->mute, NULL, NULL);
|
|
if (!op) {
|
|
qpa_logerr(pa_context_errno(c->context),
|
|
"set_sink_input_mute() failed\n");
|
|
} else {
|
|
pa_operation_unref(op);
|
|
}
|
|
|
|
pa_threaded_mainloop_unlock(c->mainloop);
|
|
}
|
|
|
|
static void qpa_volume_in(HWVoiceIn *hw, Volume *vol)
|
|
{
|
|
PAVoiceIn *pa = (PAVoiceIn *) hw;
|
|
pa_operation *op;
|
|
pa_cvolume v;
|
|
PAConnection *c = pa->g->conn;
|
|
int i;
|
|
|
|
#ifdef PA_CHECK_VERSION
|
|
pa_cvolume_init (&v);
|
|
#endif
|
|
|
|
v.channels = vol->channels;
|
|
for (i = 0; i < vol->channels; ++i) {
|
|
v.values[i] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * vol->vol[i]) / 255;
|
|
}
|
|
|
|
pa_threaded_mainloop_lock(c->mainloop);
|
|
|
|
op = pa_context_set_source_output_volume(c->context,
|
|
pa_stream_get_index(pa->stream),
|
|
&v, NULL, NULL);
|
|
if (!op) {
|
|
qpa_logerr(pa_context_errno(c->context),
|
|
"set_source_output_volume() failed\n");
|
|
} else {
|
|
pa_operation_unref(op);
|
|
}
|
|
|
|
op = pa_context_set_source_output_mute(c->context,
|
|
pa_stream_get_index(pa->stream),
|
|
vol->mute, NULL, NULL);
|
|
if (!op) {
|
|
qpa_logerr(pa_context_errno(c->context),
|
|
"set_source_output_mute() failed\n");
|
|
} else {
|
|
pa_operation_unref(op);
|
|
}
|
|
|
|
pa_threaded_mainloop_unlock(c->mainloop);
|
|
}
|
|
|
|
static int qpa_validate_per_direction_opts(Audiodev *dev,
|
|
AudiodevPaPerDirectionOptions *pdo)
|
|
{
|
|
if (!pdo->has_buffer_length) {
|
|
pdo->has_buffer_length = true;
|
|
pdo->buffer_length = 46440;
|
|
}
|
|
if (!pdo->has_latency) {
|
|
pdo->has_latency = true;
|
|
pdo->latency = 15000;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* common */
|
|
static void *qpa_conn_init(const char *server)
|
|
{
|
|
const char *vm_name;
|
|
PAConnection *c = g_malloc0(sizeof(PAConnection));
|
|
QTAILQ_INSERT_TAIL(&pa_conns, c, list);
|
|
|
|
c->mainloop = pa_threaded_mainloop_new();
|
|
if (!c->mainloop) {
|
|
goto fail;
|
|
}
|
|
|
|
vm_name = qemu_get_vm_name();
|
|
c->context = pa_context_new(pa_threaded_mainloop_get_api(c->mainloop),
|
|
vm_name ? vm_name : "qemu");
|
|
if (!c->context) {
|
|
goto fail;
|
|
}
|
|
|
|
pa_context_set_state_callback(c->context, context_state_cb, c);
|
|
|
|
if (pa_context_connect(c->context, server, 0, NULL) < 0) {
|
|
qpa_logerr(pa_context_errno(c->context),
|
|
"pa_context_connect() failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
pa_threaded_mainloop_lock(c->mainloop);
|
|
|
|
if (pa_threaded_mainloop_start(c->mainloop) < 0) {
|
|
goto unlock_and_fail;
|
|
}
|
|
|
|
for (;;) {
|
|
pa_context_state_t state;
|
|
|
|
state = pa_context_get_state(c->context);
|
|
|
|
if (state == PA_CONTEXT_READY) {
|
|
break;
|
|
}
|
|
|
|
if (!PA_CONTEXT_IS_GOOD(state)) {
|
|
qpa_logerr(pa_context_errno(c->context),
|
|
"Wrong context state\n");
|
|
goto unlock_and_fail;
|
|
}
|
|
|
|
/* Wait until the context is ready */
|
|
pa_threaded_mainloop_wait(c->mainloop);
|
|
}
|
|
|
|
pa_threaded_mainloop_unlock(c->mainloop);
|
|
return c;
|
|
|
|
unlock_and_fail:
|
|
pa_threaded_mainloop_unlock(c->mainloop);
|
|
fail:
|
|
AUD_log (AUDIO_CAP, "Failed to initialize PA context");
|
|
qpa_conn_fini(c);
|
|
return NULL;
|
|
}
|
|
|
|
static void *qpa_audio_init(Audiodev *dev)
|
|
{
|
|
paaudio *g;
|
|
AudiodevPaOptions *popts = &dev->u.pa;
|
|
const char *server;
|
|
PAConnection *c;
|
|
|
|
assert(dev->driver == AUDIODEV_DRIVER_PA);
|
|
|
|
if (!popts->has_server) {
|
|
char pidfile[64];
|
|
char *runtime;
|
|
struct stat st;
|
|
|
|
runtime = getenv("XDG_RUNTIME_DIR");
|
|
if (!runtime) {
|
|
return NULL;
|
|
}
|
|
snprintf(pidfile, sizeof(pidfile), "%s/pulse/pid", runtime);
|
|
if (stat(pidfile, &st) != 0) {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (!qpa_validate_per_direction_opts(dev, popts->in)) {
|
|
return NULL;
|
|
}
|
|
if (!qpa_validate_per_direction_opts(dev, popts->out)) {
|
|
return NULL;
|
|
}
|
|
|
|
g = g_malloc0(sizeof(paaudio));
|
|
server = popts->has_server ? popts->server : NULL;
|
|
|
|
g->dev = dev;
|
|
|
|
QTAILQ_FOREACH(c, &pa_conns, list) {
|
|
if (server == NULL || c->server == NULL ?
|
|
server == c->server :
|
|
strcmp(server, c->server) == 0) {
|
|
g->conn = c;
|
|
break;
|
|
}
|
|
}
|
|
if (!g->conn) {
|
|
g->conn = qpa_conn_init(server);
|
|
}
|
|
if (!g->conn) {
|
|
g_free(g);
|
|
return NULL;
|
|
}
|
|
|
|
++g->conn->refcount;
|
|
return g;
|
|
}
|
|
|
|
static void qpa_conn_fini(PAConnection *c)
|
|
{
|
|
if (c->mainloop) {
|
|
pa_threaded_mainloop_stop(c->mainloop);
|
|
}
|
|
|
|
if (c->context) {
|
|
pa_context_disconnect(c->context);
|
|
pa_context_unref(c->context);
|
|
}
|
|
|
|
if (c->mainloop) {
|
|
pa_threaded_mainloop_free(c->mainloop);
|
|
}
|
|
|
|
QTAILQ_REMOVE(&pa_conns, c, list);
|
|
g_free(c);
|
|
}
|
|
|
|
static void qpa_audio_fini (void *opaque)
|
|
{
|
|
paaudio *g = opaque;
|
|
PAConnection *c = g->conn;
|
|
|
|
if (--c->refcount == 0) {
|
|
qpa_conn_fini(c);
|
|
}
|
|
|
|
g_free(g);
|
|
}
|
|
|
|
static struct audio_pcm_ops qpa_pcm_ops = {
|
|
.init_out = qpa_init_out,
|
|
.fini_out = qpa_fini_out,
|
|
.write = qpa_write,
|
|
.get_buffer_out = qpa_get_buffer_out,
|
|
.put_buffer_out = qpa_write, /* pa handles it */
|
|
.volume_out = qpa_volume_out,
|
|
|
|
.init_in = qpa_init_in,
|
|
.fini_in = qpa_fini_in,
|
|
.read = qpa_read,
|
|
.get_buffer_in = qpa_get_buffer_in,
|
|
.put_buffer_in = qpa_put_buffer_in,
|
|
.volume_in = qpa_volume_in
|
|
};
|
|
|
|
static struct audio_driver pa_audio_driver = {
|
|
.name = "pa",
|
|
.descr = "http://www.pulseaudio.org/",
|
|
.init = qpa_audio_init,
|
|
.fini = qpa_audio_fini,
|
|
.pcm_ops = &qpa_pcm_ops,
|
|
.can_be_default = 1,
|
|
.max_voices_out = INT_MAX,
|
|
.max_voices_in = INT_MAX,
|
|
.voice_size_out = sizeof (PAVoiceOut),
|
|
.voice_size_in = sizeof (PAVoiceIn),
|
|
};
|
|
|
|
static void register_audio_pa(void)
|
|
{
|
|
audio_driver_register(&pa_audio_driver);
|
|
}
|
|
type_init(register_audio_pa);
|