From: Chan-yeol Park <chanyeol.park@xxxxxxxxxxx>
This patch adds checks(vendor ID, vendor specific codec ID) to make sure of
vendor specific A2DP codec selection.
---
audio/a2dp-codecs.h | 6 +++++
audio/a2dp.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 69 insertions(+), 1 deletion(-)
diff --git a/audio/a2dp-codecs.h b/audio/a2dp-codecs.h
index 51c796a..42ae2e1 100644
--- a/audio/a2dp-codecs.h
+++ b/audio/a2dp-codecs.h
@@ -26,6 +26,7 @@
#define A2DP_CODEC_MPEG12 0x01
#define A2DP_CODEC_MPEG24 0x02
#define A2DP_CODEC_ATRAC 0x03
+#define A2DP_CODEC_VENDOR 0xFF
#define SBC_SAMPLING_FREQ_16000 (1 << 3)
#define SBC_SAMPLING_FREQ_32000 (1 << 2)
@@ -114,3 +115,8 @@ typedef struct {
#else
#error "Unknown byte order"
#endif
+
+typedef struct {
+ uint8_t vendor_id[4];
+ uint8_t codec_id[2];
+} __attribute__ ((packed)) non_a2dp_vendor_codec_t;
diff --git a/audio/a2dp.c b/audio/a2dp.c
index fd1c494..8b3c0f9 100644
--- a/audio/a2dp.c
+++ b/audio/a2dp.c
@@ -44,6 +44,7 @@
#include "sink.h"
#include "source.h"
#include "a2dp.h"
+#include "a2dp-codecs.h"
#include "sdpd.h"
/* The duration that streams without users are allowed to stay in
@@ -1427,11 +1428,62 @@ done:
finalize_select(setup);
}
+static gboolean vendor_codec_is_matched(uint8_t *remote_cap,
+ size_t remote_cap_len, struct a2dp_sep *sep)
+{
+ uint8_t *capabilities;
+ size_t length;
+
+ non_a2dp_vendor_codec_t *local_codec;
+ non_a2dp_vendor_codec_t *remote_codec;
+
+ if (remote_cap_len < sizeof(non_a2dp_vendor_codec_t))
+ return FALSE;
+
+ remote_codec = (non_a2dp_vendor_codec_t *) remote_cap;
+
+ DBG("Remote vendor 0x%02x%02x%02x%02x codec 0x%02x%02x",
+ remote_codec->vendor_id[0], remote_codec->vendor_id[1],
+ remote_codec->vendor_id[2], remote_codec->vendor_id[3],
+ remote_codec->codec_id[0], remote_codec->codec_id[1]);
+
+ if (sep->endpoint == NULL)
+ return FALSE;
+
+ length = sep->endpoint->get_capabilities(sep,
+ &capabilities, sep->user_data);
+
+ if (length < sizeof(non_a2dp_vendor_codec_t))
+ return FALSE;
+
+ local_codec = (non_a2dp_vendor_codec_t *) capabilities;
+
+ DBG("Registered vendor 0x%02x%02x%02x%02x codec 0x%02x%02x",
+ local_codec->vendor_id[0], local_codec->vendor_id[1],
+ local_codec->vendor_id[2], local_codec->vendor_id[3],
+ local_codec->codec_id[0], local_codec->codec_id[1]);
+
+ if (memcmp(remote_codec->vendor_id, local_codec->vendor_id,
+ sizeof(local_codec->vendor_id)))
+ return FALSE;
+
+ if (memcmp(remote_codec->codec_id, local_codec->codec_id,
+ sizeof(local_codec->codec_id)))
+ return FALSE;
+
+ DBG("Vendor Codec info is matched");
+
+ return TRUE;
+}
+
static struct a2dp_sep *a2dp_find_sep(struct avdtp *session, GSList *list,
const char *sender)
{
for (; list; list = list->next) {
struct a2dp_sep *sep = list->data;
+ struct avdtp_remote_sep *rsep;
+ struct avdtp_media_codec_capability *rsep_codec;
+ struct avdtp_service_capability *service;
/* Use sender's endpoint if available */
if (sender) {
@@ -1445,7 +1497,17 @@ static struct a2dp_sep *a2dp_find_sep(struct avdtp *session, GSList *list,
continue;
}
- if (avdtp_find_remote_sep(session, sep->lsep) == NULL)
+ rsep = avdtp_find_remote_sep(session, sep->lsep);
+ if (rsep == NULL)
+ continue;
+
+ service = avdtp_get_codec(rsep);
+ rsep_codec = (struct avdtp_media_codec_capability *)
+ service->data;
+
+ if (rsep_codec->media_codec_type == A2DP_CODEC_VENDOR &&
+ !vendor_codec_is_matched(rsep_codec->data,
+ service->length - sizeof(*rsep_codec), sep))
continue;
return sep;
--
1.7.9.5
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