Пример #1
0
/* Called from main context */
int pa_source_output_start_move(pa_source_output *o) {
    pa_source *origin;
    int r;

    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
    pa_assert(o->source);

    if (!pa_source_output_may_move(o))
        return -PA_ERR_NOTSUPPORTED;

    if ((r = pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_START], o)) < 0)
        return r;

    origin = o->source;

    pa_idxset_remove_by_data(o->source->outputs, o, NULL);

    if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED)
        pa_assert_se(origin->n_corked-- >= 1);

    pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);

    pa_source_update_status(o->source);
    o->source = NULL;

    pa_source_output_unref(o);

    return 0;
}
Пример #2
0
/* Called from main context */
pa_usec_t pa_source_output_set_requested_latency(pa_source_output *o, pa_usec_t usec) {
    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();

    if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
        pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
        return usec;
    }

    /* If this source output is not realized yet or is being moved, we
     * have to touch the thread info data directly */

    if (o->source) {
        if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
            usec = pa_source_get_fixed_latency(o->source);

        if (usec != (pa_usec_t) -1) {
            pa_usec_t min_latency, max_latency;
            pa_source_get_latency_range(o->source, &min_latency, &max_latency);
            usec = PA_CLAMP(usec, min_latency, max_latency);
        }
    }

    o->thread_info.requested_source_latency = usec;

    return usec;
}
Пример #3
0
/* Called from thread context */
void pa_source_output_process_rewind(pa_source_output *o, size_t nbytes /* in source sample spec */) {

    pa_source_output_assert_ref(o);
    pa_source_output_assert_io_context(o);
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
    pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));

    if (nbytes <= 0)
        return;

    if (o->process_rewind) {
        pa_assert(pa_memblockq_get_length(o->thread_info.delay_memblockq) == 0);

        if (o->thread_info.resampler)
            nbytes = pa_resampler_result(o->thread_info.resampler, nbytes);

        pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) nbytes);

        if (nbytes > 0)
            o->process_rewind(o, nbytes);

        if (o->thread_info.resampler)
            pa_resampler_reset(o->thread_info.resampler);

    } else
        pa_memblockq_rewind(o->thread_info.delay_memblockq, nbytes);
}
Пример #4
0
/* Called from main context */
void pa_source_output_kill(pa_source_output*o) {
    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));

    o->kill(o);
}
/* Called from I/O thread context */
static int source_process_msg_cb(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
    struct userdata *u = PA_SOURCE(o)->userdata;

    switch (code) {

        case PA_SOURCE_MESSAGE_GET_LATENCY:

            /* The source is _put() before the source output is, so let's
             * make sure we don't access it in that time. Also, the
             * source output is first shut down, the source second. */
            if (!PA_SOURCE_IS_LINKED(u->source->thread_info.state) ||
                !PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->thread_info.state)) {
                *((pa_usec_t*) data) = 0;
                return 0;
            }

            *((pa_usec_t*) data) =

                /* Get the latency of the master source */
                pa_source_get_latency_within_thread(u->source_output->source) +
                /* Add the latency internal to our source output on top */
                pa_bytes_to_usec(pa_memblockq_get_length(u->source_output->thread_info.delay_memblockq), &u->source_output->source->sample_spec);

            return 0;
    }

    return pa_source_process_msg(o, code, data, offset, chunk);
}
Пример #6
0
/* Called from main context */
void pa_source_output_cork(pa_source_output *o, pa_bool_t b) {
    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));

    source_output_set_state(o, b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING);
}
Пример #7
0
/* Called from main context */
int pa_source_output_move_to(pa_source_output *o, pa_source *dest, pa_bool_t save) {
    int r;

    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
    pa_assert(o->source);
    pa_source_assert_ref(dest);

    if (dest == o->source)
        return 0;

    if (!pa_source_output_may_move_to(o, dest))
        return -PA_ERR_NOTSUPPORTED;

    pa_source_output_ref(o);

    if ((r = pa_source_output_start_move(o)) < 0) {
        pa_source_output_unref(o);
        return r;
    }

    if ((r = pa_source_output_finish_move(o, dest, save)) < 0) {
        pa_source_output_fail_move(o);
        pa_source_output_unref(o);
        return r;
    }

    pa_source_output_unref(o);

    return 0;
}
Пример #8
0
/* Called from thread context */
void pa_source_output_update_max_rewind(pa_source_output *o, size_t nbytes  /* in the source's sample spec */) {
    pa_source_output_assert_ref(o);
    pa_source_output_assert_io_context(o);
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
    pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));

    if (o->update_max_rewind)
        o->update_max_rewind(o, o->thread_info.resampler ? pa_resampler_result(o->thread_info.resampler, nbytes) : nbytes);
}
Пример #9
0
/* Called from main thread */
void pa_source_output_update_proplist(pa_source_output *o, pa_update_mode_t mode, pa_proplist *p) {
    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();

    if (p)
        pa_proplist_update(o->proplist, mode, p);

    if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
        pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
        pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
    }
}
/* Called from main context */
static int source_set_state_cb(pa_source *s, pa_source_state_t state) {
    struct userdata *u;

    pa_source_assert_ref(s);
    pa_assert_se(u = s->userdata);

    if (!PA_SOURCE_IS_LINKED(state) ||
        !PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
        return 0;

    pa_source_output_cork(u->source_output, state == PA_SOURCE_SUSPENDED);
    return 0;
}
Пример #11
0
/* Called from main context */
pa_bool_t pa_source_output_may_move(pa_source_output *o) {
    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));

    if (o->flags & PA_SOURCE_OUTPUT_DONT_MOVE)
        return FALSE;

    if (o->direct_on_input)
        return FALSE;

    return TRUE;
}
Пример #12
0
/* Called from main context */
static void source_get_mute_cb(pa_source *s) {
    struct userdata *u;

    pa_source_assert_ref(s);
    pa_assert_se(u = s->userdata);

    if (!PA_SOURCE_IS_LINKED(pa_source_get_state(s)) ||
        !PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
        return;

    /* FIXME, no volume control in source_output, get the info from the master */
    pa_source_get_mute(u->source_output->source, TRUE);
}
/* Called from output thread context */
static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
    struct userdata *u;

    pa_source_output_assert_ref(o);
    pa_source_output_assert_io_context(o);
    pa_assert_se(u = o->userdata);

    if (!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output))) {
        pa_log("push when no link?");
        return;
    }

    pa_source_post(u->source, chunk);
}
Пример #14
0
/* Called from main context */
void pa_source_output_unlink(pa_source_output*o) {
    pa_bool_t linked;
    pa_assert(o);
    pa_assert_ctl_context();

    /* See pa_sink_unlink() for a couple of comments how this function
     * works */

    pa_source_output_ref(o);

    linked = PA_SOURCE_OUTPUT_IS_LINKED(o->state);

    if (linked)
        pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK], o);

    if (o->direct_on_input)
        pa_idxset_remove_by_data(o->direct_on_input->direct_outputs, o, NULL);

    pa_idxset_remove_by_data(o->core->source_outputs, o, NULL);

    if (o->source)
        if (pa_idxset_remove_by_data(o->source->outputs, o, NULL))
            pa_source_output_unref(o);

    if (o->client)
        pa_idxset_remove_by_data(o->client->source_outputs, o, NULL);

    update_n_corked(o, PA_SOURCE_OUTPUT_UNLINKED);
    o->state = PA_SOURCE_OUTPUT_UNLINKED;

    if (linked && o->source)
        if (o->source->asyncmsgq)
            pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);

    reset_callbacks(o);

    if (linked) {
        pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
        pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST], o);
    }

    if (o->source) {
        pa_source_update_status(o->source);
        o->source = NULL;
    }

    pa_core_maybe_vacuum(o->core);

    pa_source_output_unref(o);
}
Пример #15
0
/* Called from main context */
pa_usec_t pa_source_output_get_requested_latency(pa_source_output *o) {
    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();

    if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
        pa_usec_t usec = 0;
        pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
        return usec;
    }

    /* If this source output is not realized yet or is being moved, we
     * have to touch the thread info data directly */

    return o->thread_info.requested_source_latency;
}
Пример #16
0
/* Called from I/O thread context */
static void source_update_requested_latency_cb(pa_source *s) {
    struct userdata *u;

    pa_source_assert_ref(s);
    pa_assert_se(u = s->userdata);

    if (!PA_SOURCE_IS_LINKED(u->source->thread_info.state) ||
        !PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->thread_info.state))
        return;

    /* Just hand this one over to the master source */
    pa_source_output_set_requested_latency_within_thread(
            u->source_output,
            pa_source_get_requested_latency_within_thread(s));
}
Пример #17
0
/* Called from main context */
void pa_source_output_fail_move(pa_source_output *o) {

    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
    pa_assert(!o->source);

    /* Check if someone wants this source output? */
    if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FAIL], o) == PA_HOOK_STOP)
        return;

    if (o->moving)
        o->moving(o, NULL);

    pa_source_output_kill(o);
}
Пример #18
0
/* Called from main context */
int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
    pa_return_val_if_fail(o->thread_info.resampler, -PA_ERR_BADSTATE);

    if (o->sample_spec.rate == rate)
        return 0;

    o->sample_spec.rate = rate;

    pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);

    pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
    return 0;
}
/* Called from output thread context */
static void source_output_state_change_cb(pa_source_output *o, pa_source_output_state_t state) {
    struct userdata *u;

    pa_source_output_assert_ref(o);
    pa_source_output_assert_io_context(o);
    pa_assert_se(u = o->userdata);

    if (PA_SOURCE_OUTPUT_IS_LINKED(state) && o->thread_info.state == PA_SOURCE_OUTPUT_INIT) {

        u->skip = pa_usec_to_bytes(PA_CLIP_SUB(pa_source_get_latency_within_thread(o->source),
                                               u->latency),
                                   &o->sample_spec);

        pa_log_info("Skipping %lu bytes", (unsigned long) u->skip);
    }
}
Пример #20
0
/* Called from main context */
pa_usec_t pa_source_output_get_latency(pa_source_output *o, pa_usec_t *source_latency) {
    pa_usec_t r[2] = { 0, 0 };

    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));

    pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY, r, 0, NULL) == 0);

    if (o->get_latency)
        r[0] += o->get_latency(o);

    if (source_latency)
        *source_latency = r[1];

    return r[0];
}
Пример #21
0
static void source_get_volume_cb(pa_source *s) {
    struct userdata *u;

    pa_source_assert_ref(s);
    pa_assert_se(u = s->userdata);

    if (!PA_SOURCE_IS_LINKED(pa_source_get_state(s)) ||
        !PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
        return;

    /* FIXME, no volume control in source_output, get the info from the master */
    pa_source_get_volume(u->source_output->source, TRUE);

    if (pa_cvolume_equal(&s->volume,&u->source_output->source->volume))
        /* no change */
        return;

    s->volume = u->source_output->source->volume;
    pa_source_set_soft_volume(s, NULL);
}
Пример #22
0
/* Called from main context */
static void source_output_set_state(pa_source_output *o, pa_source_output_state_t state) {
    pa_assert(o);
    pa_assert_ctl_context();

    if (o->state == state)
        return;

    pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) == 0);

    update_n_corked(o, state);
    o->state = state;

    if (state != PA_SOURCE_OUTPUT_UNLINKED) {
        pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED], o);

        if (PA_SOURCE_OUTPUT_IS_LINKED(state))
            pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
    }

    pa_source_update_status(o->source);
}
Пример #23
0
/* Called from main context */
pa_bool_t pa_source_output_may_move_to(pa_source_output *o, pa_source *dest) {
    pa_source_output_assert_ref(o);
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
    pa_source_assert_ref(dest);

    if (dest == o->source)
        return TRUE;

    if (!pa_source_output_may_move(o))
        return FALSE;

    if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
        pa_log_warn("Failed to move source output: too many outputs per source.");
        return FALSE;
    }

    if (o->may_move_to)
        if (!o->may_move_to(o, dest))
            return FALSE;

    return TRUE;
}
Пример #24
0
/* Called from main context */
void pa_source_output_set_name(pa_source_output *o, const char *name) {
    const char *old;
    pa_assert_ctl_context();
    pa_source_output_assert_ref(o);

    if (!name && !pa_proplist_contains(o->proplist, PA_PROP_MEDIA_NAME))
        return;

    old = pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME);

    if (old && name && !strcmp(old, name))
        return;

    if (name)
        pa_proplist_sets(o->proplist, PA_PROP_MEDIA_NAME, name);
    else
        pa_proplist_unset(o->proplist, PA_PROP_MEDIA_NAME);

    if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
        pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
        pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
    }
}
Пример #25
0
/* Called from main context */
static void source_output_free(pa_object* mo) {
    pa_source_output *o = PA_SOURCE_OUTPUT(mo);

    pa_assert(o);
    pa_assert_ctl_context();
    pa_assert(pa_source_output_refcnt(o) == 0);

    if (PA_SOURCE_OUTPUT_IS_LINKED(o->state))
        pa_source_output_unlink(o);

    pa_log_info("Freeing output %u \"%s\"", o->index, pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)));

    if (o->thread_info.delay_memblockq)
        pa_memblockq_free(o->thread_info.delay_memblockq);

    if (o->thread_info.resampler)
        pa_resampler_free(o->thread_info.resampler);

    if (o->proplist)
        pa_proplist_free(o->proplist);

    pa_xfree(o->driver);
    pa_xfree(o);
}
Пример #26
0
/* Called from thread context */
void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
    size_t length;
    size_t limit, mbs = 0;

    pa_source_output_assert_ref(o);
    pa_source_output_assert_io_context(o);
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
    pa_assert(chunk);
    pa_assert(pa_frame_aligned(chunk->length, &o->source->sample_spec));

    if (!o->push || o->thread_info.state == PA_SOURCE_OUTPUT_CORKED)
        return;

    pa_assert(o->thread_info.state == PA_SOURCE_OUTPUT_RUNNING);

    if (pa_memblockq_push(o->thread_info.delay_memblockq, chunk) < 0) {
        pa_log_debug("Delay queue overflow!");
        pa_memblockq_seek(o->thread_info.delay_memblockq, (int64_t) chunk->length, PA_SEEK_RELATIVE, TRUE);
    }

    limit = o->process_rewind ? 0 : o->source->thread_info.max_rewind;

    if (limit > 0 && o->source->monitor_of) {
        pa_usec_t latency;
        size_t n;

        /* Hmm, check the latency for knowing how much of the buffered
         * data is actually still unplayed and might hence still
         * change. This is suboptimal. Ideally we'd have a call like
         * pa_sink_get_changeable_size() or so that tells us how much
         * of the queued data is actually still changeable. Hence
         * FIXME! */

        latency = pa_sink_get_latency_within_thread(o->source->monitor_of);

        n = pa_usec_to_bytes(latency, &o->source->sample_spec);

        if (n < limit)
            limit = n;
    }

    /* Implement the delay queue */
    while ((length = pa_memblockq_get_length(o->thread_info.delay_memblockq)) > limit) {
        pa_memchunk qchunk;

        length -= limit;

        pa_assert_se(pa_memblockq_peek(o->thread_info.delay_memblockq, &qchunk) >= 0);

        if (qchunk.length > length)
            qchunk.length = length;

        pa_assert(qchunk.length > 0);

        if (!o->thread_info.resampler)
            o->push(o, &qchunk);
        else {
            pa_memchunk rchunk;

            if (mbs == 0)
                mbs = pa_resampler_max_block_size(o->thread_info.resampler);

            if (qchunk.length > mbs)
                qchunk.length = mbs;

            pa_resampler_run(o->thread_info.resampler, &qchunk, &rchunk);

            if (rchunk.length > 0)
                o->push(o, &rchunk);

            if (rchunk.memblock)
                pa_memblock_unref(rchunk.memblock);
        }

        pa_memblock_unref(qchunk.memblock);
        pa_memblockq_drop(o->thread_info.delay_memblockq, qchunk.length);
    }
}
Пример #27
0
/* Called from input thread context */
static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
    struct userdata *u;

    pa_source_output_assert_ref(o);
    pa_source_output_assert_io_context(o);
    pa_assert_se(u = o->userdata);

    if (!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output))) {
        pa_log("push when no link?");
        return;
    }

    /* PUT YOUR CODE HERE TO DO SOMETHING WITH THE SOURCE DATA */

    /* if uplink sink exists, pull data from there; simplify by using
       same length as chunk provided by source */
    if(u->sink && (pa_sink_get_state(u->sink) == PA_SINK_RUNNING)) {
        pa_memchunk tchunk;
        size_t nbytes = chunk->length;
        pa_mix_info streams[2];
        pa_memchunk target_chunk;
        void *target;
        int ch;

        /* Hmm, process any rewind request that might be queued up */
        pa_sink_process_rewind(u->sink, 0);

        /* get data from the sink */
        while (pa_memblockq_peek(u->sink_memblockq, &tchunk) < 0) {
            pa_memchunk nchunk;

            /* make sure we get nbytes from the sink with render_full,
               otherwise we cannot mix with the uplink */
            pa_sink_render_full(u->sink, nbytes, &nchunk);
            pa_memblockq_push(u->sink_memblockq, &nchunk);
            pa_memblock_unref(nchunk.memblock);
        }
        pa_assert(tchunk.length == chunk->length);

        /* move the read pointer for sink memblockq */
        pa_memblockq_drop(u->sink_memblockq, tchunk.length);

        /* allocate target chunk */
        /* this could probably be done in-place, but having chunk as both
           the input and output creates issues with reference counts */
        target_chunk.index = 0;
        target_chunk.length = chunk->length;
        pa_assert(target_chunk.length == chunk->length);

        target_chunk.memblock = pa_memblock_new(o->source->core->mempool,
                                                target_chunk.length);
        pa_assert( target_chunk.memblock );

        /* get target pointer */
        target = (void*)((uint8_t*)pa_memblock_acquire(target_chunk.memblock)
                         + target_chunk.index);

        /* set-up mixing structure
           volume was taken care of in sink and source already */
        streams[0].chunk = *chunk;
        for(ch=0;ch<o->sample_spec.channels;ch++)
            streams[0].volume.values[ch] = PA_VOLUME_NORM; /* FIXME */
        streams[0].volume.channels = o->sample_spec.channels;

        streams[1].chunk = tchunk;
        for(ch=0;ch<o->sample_spec.channels;ch++)
            streams[1].volume.values[ch] = PA_VOLUME_NORM; /* FIXME */
        streams[1].volume.channels = o->sample_spec.channels;

        /* do mixing */
        pa_mix(streams,                /* 2 streams to be mixed */
               2,
               target,                 /* put result in target chunk */
               chunk->length,          /* same length as input */
               (const pa_sample_spec *)&o->sample_spec, /* same sample spec for input and output */
               NULL,                   /* no volume information */
               FALSE);                 /* no mute */

        pa_memblock_release(target_chunk.memblock);
        pa_memblock_unref(tchunk.memblock); /* clean-up */

        /* forward the data to the virtual source */
        pa_source_post(u->source, &target_chunk);

        pa_memblock_unref(target_chunk.memblock); /* clean-up */

    } else {
        /* forward the data to the virtual source */
        pa_source_post(u->source, chunk);
    }


}
Пример #28
0
/* Called from main context */
int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, pa_bool_t save) {
    pa_resampler *new_resampler;

    pa_source_output_assert_ref(o);
    pa_assert_ctl_context();
    pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
    pa_assert(!o->source);
    pa_source_assert_ref(dest);

    if (!pa_source_output_may_move_to(o, dest))
        return -1;

    if (o->thread_info.resampler &&
        pa_sample_spec_equal(pa_resampler_input_sample_spec(o->thread_info.resampler), &dest->sample_spec) &&
        pa_channel_map_equal(pa_resampler_input_channel_map(o->thread_info.resampler), &dest->channel_map))

        /* Try to reuse the old resampler if possible */
        new_resampler = o->thread_info.resampler;

    else if ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
             !pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec) ||
             !pa_channel_map_equal(&o->channel_map, &dest->channel_map)) {

        /* Okey, we need a new resampler for the new source */

        if (!(new_resampler = pa_resampler_new(
                      o->core->mempool,
                      &dest->sample_spec, &dest->channel_map,
                      &o->sample_spec, &o->channel_map,
                      o->requested_resample_method,
                      ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
                      ((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
                      (o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
            pa_log_warn("Unsupported resampling operation.");
            return -PA_ERR_NOTSUPPORTED;
        }
    } else
        new_resampler = NULL;

    if (o->moving)
        o->moving(o, dest);

    o->source = dest;
    o->save_source = save;
    pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL);

    if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED)
        o->source->n_corked++;

    /* Replace resampler */
    if (new_resampler != o->thread_info.resampler) {
        if (o->thread_info.resampler)
            pa_resampler_free(o->thread_info.resampler);
        o->thread_info.resampler = new_resampler;

        pa_memblockq_free(o->thread_info.delay_memblockq);

        o->thread_info.delay_memblockq = pa_memblockq_new(
                0,
                MEMBLOCKQ_MAXLENGTH,
                0,
                pa_frame_size(&o->source->sample_spec),
                0,
                1,
                0,
                &o->source->silence);
        o->actual_resample_method = new_resampler ? pa_resampler_get_method(new_resampler) : PA_RESAMPLER_INVALID;
    }

    pa_source_update_status(dest);

    pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);

    pa_log_debug("Successfully moved source output %i to %s.", o->index, dest->name);

    /* Notify everyone */
    pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH], o);
    pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);

    return 0;
}