Exemple #1
0
static void thread_func(void *userdata) {

    struct userdata *u = userdata;
    int ret;
    pa_usec_t now;

    pa_assert(u);

    pa_log_debug("Thread starting up");

    pa_thread_mq_install(&u->thread_mq);

    u->timestamp = pa_rtclock_now();

    for (;;) {

        if (u->sink->thread_info.state == PA_SINK_RUNNING) {

            now = pa_rtclock_now();

            if (u->sink->thread_info.rewind_requested) {
                if (u->sink->thread_info.rewind_nbytes > 0) {
                    process_rewind(u, now);
                } else {
                    pa_sink_process_rewind(u->sink, 0);
                }
            }

            if (u->timestamp <= now) {
                pa_log_debug("thread_func: calling process_render");
                process_render(u, now);
            }

            pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp);

        } else {
            pa_rtpoll_set_timer_disabled(u->rtpoll);
        }

        if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
            goto fail;
        }

        if (ret == 0) {
            goto finish;
        }
    }

fail:
    /* If this was no regular exit from the loop we have to continue
     * processing messages until we received PA_MESSAGE_SHUTDOWN */
    pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core),
                      PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0,
                      NULL, NULL);
    pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);

finish:
    pa_log_debug("Thread shutting down");
}
static void thread_func(void *userdata) {
    struct userdata *u = userdata;

    pa_assert(u);

    pa_log_debug("Thread starting up");

    pa_thread_mq_install(&u->thread_mq);

    u->timestamp = pa_rtclock_now();

    for (;;) {
        pa_usec_t now = 0;
        int ret;

        if (PA_SINK_IS_OPENED(u->sink->thread_info.state))
            now = pa_rtclock_now();

        if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
            process_rewind(u, now);

        /* Render some data and drop it immediately */
        if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
            if (u->timestamp <= now)
                process_render(u, now);

            pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp);
        } else
            pa_rtpoll_set_timer_disabled(u->rtpoll);

        /* Hmm, nothing to do. Let's sleep */
        if ((ret = pa_rtpoll_run(u->rtpoll)) < 0)
            goto fail;

        if (ret == 0)
            goto finish;
    }

fail:
    /* If this was no regular exit from the loop we have to continue
     * processing messages until we received PA_MESSAGE_SHUTDOWN */
    pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
    pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);

finish:
    pa_log_debug("Thread shutting down");
}
Exemple #3
0
static void thread_loop(void *arg)
{
    struct example_sink_userdata *u = arg;
    pa_assert(u);

    pa_thread_mq_install(&u->thread_mq);

    const pa_usec_t poll_interval = 10000;

    pa_usec_t start_time = 0;
    pa_usec_t next_time = 0;

    for (;;) {
        /* process rewind */
        if (u->sink->thread_info.rewind_requested) {
            process_rewind(u);
        }

        /* process sink inputs */
        if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
            pa_usec_t now_time = pa_rtclock_now();

            if (start_time == 0) {
                start_time = now_time;
                next_time = start_time + poll_interval;
            }
            else {
                while (now_time >= next_time) {
                    uint64_t expected_bytes =
                        pa_usec_to_bytes(next_time - start_time, &u->sink->sample_spec);

                    /* render samples from sink inputs and write them to output file */
                    process_samples(u, expected_bytes);

                    /* next tick */
                    next_time += poll_interval;
                }
            }

            /* schedule set next rendering tick */
            pa_rtpoll_set_timer_absolute(u->rtpoll, next_time);
        }
        else {
            /* sleep until state change */
            start_time = 0;
            next_time = 0;
            pa_rtpoll_set_timer_disabled(u->rtpoll);
        }

        /* process events and wait next rendering tick */
#if PA_CHECK_VERSION(5, 99, 0)
        int ret = pa_rtpoll_run(u->rtpoll);
#else
        int ret = pa_rtpoll_run(u->rtpoll, true);
#endif
        if (ret < 0) {
            pa_log("[example sink] pa_rtpoll_run returned error");
            goto error;
        }

        if (ret == 0) {
            break;
        }
    }

    return;

error:
    process_error(u);
}
Exemple #4
0
static void thread_func(void *userdata) {
    struct userdata *u = userdata;
    unsigned short revents = 0;
    int ret, err;
    audio_info_t info;

    pa_assert(u);

    pa_log_debug("Thread starting up");

    if (u->core->realtime_scheduling)
        pa_make_realtime(u->core->realtime_priority);

    pa_thread_mq_install(&u->thread_mq);

    pa_smoother_set_time_offset(u->smoother, pa_rtclock_now());

    for (;;) {
        /* Render some data and write it to the dsp */

        if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
            process_rewind(u);

        if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
            pa_usec_t xtime0, ysleep_interval, xsleep_interval;
            uint64_t buffered_bytes;

            err = ioctl(u->fd, AUDIO_GETINFO, &info);
            if (err < 0) {
                pa_log("AUDIO_GETINFO ioctl failed: %s", pa_cstrerror(errno));
                goto fail;
            }

            if (info.play.error) {
                pa_log_debug("buffer under-run!");

                AUDIO_INITINFO(&info);
                info.play.error = 0;
                if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0)
                    pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));

                pa_smoother_reset(u->smoother, pa_rtclock_now(), true);
            }

            for (;;) {
                void *p;
                ssize_t w;
                size_t len;
                int write_type = 1;

                /*
                 * Since we cannot modify the size of the output buffer we fake it
                 * by not filling it more than u->buffer_size.
                 */
                xtime0 = pa_rtclock_now();
                buffered_bytes = get_playback_buffered_bytes(u);
                if (buffered_bytes >= (uint64_t)u->buffer_size)
                    break;

                len = u->buffer_size - buffered_bytes;
                len -= len % u->frame_size;

                if (len < (size_t) u->minimum_request)
                    break;

                if (!u->memchunk.length)
                    pa_sink_render(u->sink, u->sink->thread_info.max_request, &u->memchunk);

                len = PA_MIN(u->memchunk.length, len);

                p = pa_memblock_acquire(u->memchunk.memblock);
                w = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, len, &write_type);
                pa_memblock_release(u->memchunk.memblock);

                if (w <= 0) {
                    if (errno == EINTR) {
                        continue;
                    } else if (errno == EAGAIN) {
                        /* We may have realtime priority so yield the CPU to ensure that fd can become writable again. */
                        pa_log_debug("EAGAIN with %llu bytes buffered.", buffered_bytes);
                        break;
                    } else {
                        pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno));
                        goto fail;
                    }
                } else {
                    pa_assert(w % u->frame_size == 0);

                    u->written_bytes += w;
                    u->memchunk.index += w;
                    u->memchunk.length -= w;
                    if (u->memchunk.length <= 0) {
                        pa_memblock_unref(u->memchunk.memblock);
                        pa_memchunk_reset(&u->memchunk);
                    }
                }
            }

            ysleep_interval = pa_bytes_to_usec(buffered_bytes / 2, &u->sink->sample_spec);
            xsleep_interval = pa_smoother_translate(u->smoother, xtime0, ysleep_interval);
            pa_rtpoll_set_timer_absolute(u->rtpoll, xtime0 + PA_MIN(xsleep_interval, ysleep_interval));
        } else
            pa_rtpoll_set_timer_disabled(u->rtpoll);

        /* Try to read some data and pass it on to the source driver */

        if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state) && (revents & POLLIN)) {
            pa_memchunk memchunk;
            void *p;
            ssize_t r;
            size_t len;

            err = ioctl(u->fd, AUDIO_GETINFO, &info);
            pa_assert(err >= 0);

            if (info.record.error) {
                pa_log_debug("buffer overflow!");

                AUDIO_INITINFO(&info);
                info.record.error = 0;
                if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0)
                    pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
            }

            err = ioctl(u->fd, I_NREAD, &len);
            pa_assert(err >= 0);

            if (len > 0) {
                memchunk.memblock = pa_memblock_new(u->core->mempool, len);
                pa_assert(memchunk.memblock);

                p = pa_memblock_acquire(memchunk.memblock);
                r = pa_read(u->fd, p, len, NULL);
                pa_memblock_release(memchunk.memblock);

                if (r < 0) {
                    pa_memblock_unref(memchunk.memblock);
                    if (errno == EAGAIN)
                        break;
                    else {
                        pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
                        goto fail;
                    }
                } else {
                    u->read_bytes += r;

                    memchunk.index = 0;
                    memchunk.length = r;

                    pa_source_post(u->source, &memchunk);
                    pa_memblock_unref(memchunk.memblock);

                    revents &= ~POLLIN;
                }
            }
        }

        if (u->rtpoll_item) {
            struct pollfd *pollfd;

            pa_assert(u->fd >= 0);

            pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
            pollfd->events = (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) ? POLLIN : 0;
        }

        /* Hmm, nothing to do. Let's sleep */
        if ((ret = pa_rtpoll_run(u->rtpoll, true)) < 0)
            goto fail;

        if (ret == 0)
            goto finish;

        if (u->rtpoll_item) {
            struct pollfd *pollfd;

            pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);

            if (pollfd->revents & ~(POLLOUT|POLLIN)) {
                pa_log("DSP shutdown.");
                goto fail;
            }

            revents = pollfd->revents;
        } else
            revents = 0;
    }

fail:
    /* We have to continue processing messages until we receive the
     * SHUTDOWN message */
    pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
    pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);

finish:
    pa_log_debug("Thread shutting down");
}
static void thread_func(void *userdata)
{
	struct context *context = userdata;
	int ret;
	pa_usec_t now;

	pa_assert(context);

	pa_log_debug("Thread starting up");

	pa_thread_mq_install(&context->thread_mq);

	context->timestamp = pa_rtclock_now();

	for (;;)
	{

		if (context->sink->thread_info.state == PA_SINK_RUNNING)
		{

			now = pa_rtclock_now();

			if (context->sink->thread_info.rewind_requested)
			{
				process_rewind(context, now);
			}

			if (context->timestamp <= now)
			{
				pa_log_debug("thread_func: calling process_render");
				process_render(context, now);
			}

			pa_rtpoll_set_timer_absolute(context->rtpoll, context->timestamp);

		}
		else
		{
			pa_rtpoll_set_timer_disabled(context->rtpoll);
		}

#if PA_CHECK_VERSION(5,0,0)
		if ((ret = pa_rtpoll_run(context->rtpoll)) < 0)
#else
		if ((ret = pa_rtpoll_run(context->rtpoll, TRUE)) < 0)
#endif
		{
			goto FAIL;
		}

		if (ret == 0)
		{
			goto DONE;
		}
	}

FAIL:
 	/* If this was no regular exit from the loop we have to continue
	 * processing messages until we received PA_MESSAGE_SHUTDOWN */
	pa_asyncmsgq_post(context->thread_mq.outq, PA_MSGOBJECT(context->core),
		PA_CORE_MESSAGE_UNLOAD_MODULE, context->module, 0, NULL, NULL);
	pa_asyncmsgq_wait_for(context->thread_mq.inq, PA_MESSAGE_SHUTDOWN);

DONE:
	pa_log_debug("Thread shutting down");
}