[pulseaudio-discuss] [PATCH 1/2] bluetooth: handle bluetooth source
João Paulo Rechi Vita
jprvita at gmail.com
Sat Aug 15 22:16:15 PDT 2009
---
src/modules/bluetooth/module-bluetooth-device.c | 181 +++++++++++++++++++++--
1 files changed, 168 insertions(+), 13 deletions(-)
diff --git a/src/modules/bluetooth/module-bluetooth-device.c b/src/modules/bluetooth/module-bluetooth-device.c
index 5f119c7..fa44cf6 100644
--- a/src/modules/bluetooth/module-bluetooth-device.c
+++ b/src/modules/bluetooth/module-bluetooth-device.c
@@ -1,7 +1,7 @@
/***
This file is part of PulseAudio.
- Copyright 2008 Joao Paulo Rechi Vita
+ Copyright 2008-2009 Joao Paulo Rechi Vita
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
@@ -129,6 +129,7 @@ struct hsp_info {
enum profile {
PROFILE_A2DP,
+ PROFILE_A2DP_SOURCE,
PROFILE_HSP,
PROFILE_OFF
};
@@ -178,6 +179,7 @@ struct userdata {
};
#define FIXED_LATENCY_PLAYBACK_A2DP (25*PA_USEC_PER_MSEC)
+#define FIXED_LATENCY_RECORD_A2DP (25*PA_USEC_PER_MSEC)
#define FIXED_LATENCY_PLAYBACK_HSP (125*PA_USEC_PER_MSEC)
#define FIXED_LATENCY_RECORD_HSP (25*PA_USEC_PER_MSEC)
@@ -307,7 +309,7 @@ static int parse_caps(struct userdata *u, uint8_t seid, const struct bt_get_capa
pa_log_debug("Payload size is %lu %lu", (unsigned long) bytes_left, (unsigned long) sizeof(*codec));
- if ((u->profile == PROFILE_A2DP && codec->transport != BT_CAPABILITIES_TRANSPORT_A2DP) ||
+ if (((u->profile == PROFILE_A2DP || u->profile == PROFILE_A2DP_SOURCE) && codec->transport != BT_CAPABILITIES_TRANSPORT_A2DP) ||
(u->profile == PROFILE_HSP && codec->transport != BT_CAPABILITIES_TRANSPORT_SCO)) {
pa_log_error("Got capabilities for wrong codec.");
return -1;
@@ -344,6 +346,26 @@ static int parse_caps(struct userdata *u, uint8_t seid, const struct bt_get_capa
return codec->seid;
memcpy(&u->a2dp.sbc_capabilities, codec, sizeof(u->a2dp.sbc_capabilities));
+
+ } else if (u->profile == PROFILE_A2DP_SOURCE) {
+
+ while (bytes_left > 0) {
+ if ((codec->type == BT_A2DP_SBC_SOURCE) && !codec->lock)
+ break;
+
+ bytes_left -= codec->length;
+ codec = (const codec_capabilities_t*) ((const uint8_t*) codec + codec->length);
+ }
+
+ if (bytes_left <= 0 || codec->length != sizeof(u->a2dp.sbc_capabilities))
+ return -1;
+
+ pa_assert(codec->type == BT_A2DP_SBC_SOURCE);
+
+ if (codec->configured && seid == 0)
+ return codec->seid;
+
+ memcpy(&u->a2dp.sbc_capabilities, codec, sizeof(u->a2dp.sbc_capabilities));
}
return 0;
@@ -368,7 +390,7 @@ static int get_caps(struct userdata *u, uint8_t seid) {
msg.getcaps_req.seid = seid;
pa_strlcpy(msg.getcaps_req.object, u->path, sizeof(msg.getcaps_req.object));
- if (u->profile == PROFILE_A2DP)
+ if (u->profile == PROFILE_A2DP || u->profile == PROFILE_A2DP_SOURCE)
msg.getcaps_req.transport = BT_CAPABILITIES_TRANSPORT_A2DP;
else {
pa_assert(u->profile == PROFILE_HSP);
@@ -451,7 +473,7 @@ static int setup_a2dp(struct userdata *u) {
};
pa_assert(u);
- pa_assert(u->profile == PROFILE_A2DP);
+ pa_assert(u->profile == PROFILE_A2DP || u->profile == PROFILE_A2DP_SOURCE);
cap = &u->a2dp.sbc_capabilities;
@@ -652,8 +674,8 @@ static int set_conf(struct userdata *u) {
msg.open_req.h.length = sizeof(msg.open_req);
pa_strlcpy(msg.open_req.object, u->path, sizeof(msg.open_req.object));
- msg.open_req.seid = u->profile == PROFILE_A2DP ? u->a2dp.sbc_capabilities.capability.seid : BT_A2DP_SEID_RANGE + 1;
- msg.open_req.lock = u->profile == PROFILE_A2DP ? BT_WRITE_LOCK : BT_READ_LOCK | BT_WRITE_LOCK;
+ msg.open_req.seid = (u->profile == PROFILE_A2DP || u->profile == PROFILE_A2DP_SOURCE) ? u->a2dp.sbc_capabilities.capability.seid : BT_A2DP_SEID_RANGE + 1;
+ msg.open_req.lock = (u->profile == PROFILE_A2DP) ? BT_WRITE_LOCK : BT_READ_LOCK | BT_WRITE_LOCK;
if (service_send(u, &msg.open_req.h) < 0)
return -1;
@@ -661,7 +683,7 @@ static int set_conf(struct userdata *u) {
if (service_expect(u, &msg.open_rsp.h, sizeof(msg), BT_OPEN, sizeof(msg.open_rsp)) < 0)
return -1;
- if (u->profile == PROFILE_A2DP ) {
+ if (u->profile == PROFILE_A2DP || u->profile == PROFILE_A2DP_SOURCE) {
u->sample_spec.format = PA_SAMPLE_S16LE;
if (setup_a2dp(u) < 0)
@@ -679,7 +701,7 @@ static int set_conf(struct userdata *u) {
msg.setconf_req.h.name = BT_SET_CONFIGURATION;
msg.setconf_req.h.length = sizeof(msg.setconf_req);
- if (u->profile == PROFILE_A2DP) {
+ if (u->profile == PROFILE_A2DP || u->profile == PROFILE_A2DP_SOURCE) {
memcpy(&msg.setconf_req.codec, &u->a2dp.sbc_capabilities, sizeof(u->a2dp.sbc_capabilities));
} else {
msg.setconf_req.codec.transport = BT_CAPABILITIES_TRANSPORT_SCO;
@@ -697,7 +719,7 @@ static int set_conf(struct userdata *u) {
u->link_mtu = msg.setconf_rsp.link_mtu;
/* setup SBC encoder now we agree on parameters */
- if (u->profile == PROFILE_A2DP) {
+ if (u->profile == PROFILE_A2DP || u->profile == PROFILE_A2DP_SOURCE) {
setup_sbc(&u->a2dp);
u->block_size =
@@ -1250,6 +1272,119 @@ static int a2dp_process_render(struct userdata *u) {
return ret;
}
+static int a2dp_process_push(struct userdata *u) {
+ int ret = 0;
+ pa_memchunk memchunk;
+
+ pa_assert(u);
+ pa_assert(u->profile == PROFILE_A2DP_SOURCE);
+ pa_assert(u->source);
+ pa_assert(u->read_smoother);
+
+ memchunk.memblock = pa_memblock_new(u->core->mempool, u->block_size);
+ memchunk.index = memchunk.length = 0;
+
+ for (;;) {
+ pa_bool_t found_tstamp = FALSE;
+ pa_usec_t tstamp;
+ struct a2dp_info *a2dp;
+ struct rtp_header *header;
+ struct rtp_payload *payload;
+ const void *p;
+ void *d;
+ ssize_t l;
+ size_t to_write, to_decode;
+ unsigned frame_count;
+
+ a2dp_prepare_buffer(u);
+
+ a2dp = &u->a2dp;
+ header = a2dp->buffer;
+ payload = (struct rtp_payload*) ((uint8_t*) a2dp->buffer + sizeof(*header));
+
+ l = pa_read(u->stream_fd, a2dp->buffer, a2dp->buffer_size, &u->stream_write_type);
+
+ if (l <= 0) {
+
+ if (l < 0 && errno == EINTR)
+ /* Retry right away if we got interrupted */
+ continue;
+
+ else if (l < 0 && errno == EAGAIN)
+ /* Hmm, apparently the socket was not readable, give up for now. */
+ break;
+
+ pa_log_error("Failed to read data from socket: %s", l < 0 ? pa_cstrerror(errno) : "EOF");
+ ret = -1;
+ break;
+ }
+
+ pa_assert((size_t) l <= a2dp->buffer_size);
+
+ u->read_index += (uint64_t) l;
+
+ /* TODO: get timestamp from rtp */
+ if (!found_tstamp) {
+ /* pa_log_warn("Couldn't find SO_TIMESTAMP data in auxiliary recvmsg() data!"); */
+ tstamp = pa_rtclock_now();
+ }
+
+ pa_smoother_put(u->read_smoother, tstamp, pa_bytes_to_usec(u->read_index, &u->sample_spec));
+ pa_smoother_resume(u->read_smoother, tstamp, TRUE);
+
+ p = (uint8_t*) a2dp->buffer + sizeof(*header) + sizeof(*payload);
+ to_decode = l - sizeof(*header) - sizeof(*payload);
+
+ d = pa_memblock_acquire(memchunk.memblock);
+ to_write = memchunk.length = pa_memblock_get_length(memchunk.memblock);
+
+ while (PA_LIKELY(to_decode > 0 && to_write > 0)) {
+ size_t written;
+ ssize_t decoded;
+
+ decoded = sbc_decode(&a2dp->sbc,
+ p, to_decode,
+ d, to_write,
+ &written);
+
+ if (PA_UNLIKELY(decoded <= 0)) {
+ pa_log_error("SBC decoding error (%li)", (long) decoded);
+ pa_memblock_release(memchunk.memblock);
+ pa_memblock_unref(memchunk.memblock);
+ return -1;
+ }
+
+/* pa_log_debug("SBC: decoded: %lu; written: %lu", (unsigned long) decoded, (unsigned long) written); */
+/* pa_log_debug("SBC: frame_length: %lu; codesize: %lu", (unsigned long) a2dp->frame_length, (unsigned long) a2dp->codesize); */
+
+ pa_assert_fp((size_t) decoded <= to_decode);
+ pa_assert_fp((size_t) decoded == a2dp->frame_length);
+
+ pa_assert_fp((size_t) written <= to_write);
+ pa_assert_fp((size_t) written == a2dp->codesize);
+
+ p = (const uint8_t*) p + decoded;
+ to_decode -= decoded;
+
+ d = (uint8_t*) d + written;
+ to_write -= written;
+
+ frame_count++;
+ }
+
+ pa_memblock_release(memchunk.memblock);
+
+ pa_source_post(u->source, &memchunk);
+
+ ret = 1;
+ break;
+ }
+
+ pa_memblock_unref(memchunk.memblock);
+
+ return ret;
+}
+
static void thread_func(void *userdata) {
struct userdata *u = userdata;
unsigned do_write = 0;
@@ -1285,7 +1420,12 @@ static void thread_func(void *userdata) {
if (pollfd && (pollfd->revents & POLLIN)) {
int n_read;
- if ((n_read = hsp_process_push(u)) < 0)
+ if (u->profile == PROFILE_HSP)
+ n_read = hsp_process_push(u);
+ else
+ n_read = a2dp_process_push(u);
+
+ if (n_read < 0)
goto fail;
/* We just read something, so we are supposed to write something, too */
@@ -1687,7 +1827,7 @@ static int add_source(struct userdata *u) {
data.driver = __FILE__;
data.module = u->module;
pa_source_new_data_set_sample_spec(&data, &u->sample_spec);
- pa_proplist_sets(data.proplist, "bluetooth.protocol", u->profile == PROFILE_A2DP ? "a2dp" : "hsp");
+ pa_proplist_sets(data.proplist, "bluetooth.protocol", u->profile == PROFILE_A2DP_SOURCE ? "a2dp_source" : "hsp");
if (u->profile == PROFILE_HSP)
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
data.card = u->card;
@@ -1712,7 +1852,7 @@ static int add_source(struct userdata *u) {
u->source->parent.process_msg = source_process_msg;
pa_source_set_fixed_latency(u->source,
- (/* u->profile == PROFILE_A2DP ? FIXED_LATENCY_RECORD_A2DP : */ FIXED_LATENCY_RECORD_HSP) +
+ (u->profile == PROFILE_A2DP_SOURCE ? FIXED_LATENCY_RECORD_A2DP : FIXED_LATENCY_RECORD_HSP) +
pa_bytes_to_usec(u->block_size, &u->sample_spec));
}
@@ -1809,7 +1949,8 @@ static int init_profile(struct userdata *u) {
if (add_sink(u) < 0)
r = -1;
- if (u->profile == PROFILE_HSP)
+ if (u->profile == PROFILE_HSP ||
+ u->profile == PROFILE_A2DP_SOURCE)
if (add_source(u) < 0)
r = -1;
@@ -2050,6 +2191,20 @@ static int add_card(struct userdata *u, const pa_bluetooth_device *device) {
pa_hashmap_put(data.profiles, p->name, p);
}
+ if (pa_bluetooth_uuid_has(device->uuids, A2DP_SOURCE_UUID)) {
+ p = pa_card_profile_new("a2dp_source", _("High Fidelity Capture (A2DP)"), sizeof(enum profile));
+ p->priority = 10;
+ p->n_sinks = 0;
+ p->n_sources = 1;
+ p->max_sink_channels = 0;
+ p->max_source_channels = 2;
+
+ d = PA_CARD_PROFILE_DATA(p);
+ *d = PROFILE_A2DP_SOURCE;
+
+ pa_hashmap_put(data.profiles, p->name, p);
+ }
+
if (pa_bluetooth_uuid_has(device->uuids, HSP_HS_UUID) ||
pa_bluetooth_uuid_has(device->uuids, HFP_HS_UUID)) {
p = pa_card_profile_new("hsp", _("Telephony Duplex (HSP/HFP)"), sizeof(enum profile));
--
1.6.0.4
More information about the pulseaudio-discuss
mailing list