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bluez5: use start_decode to skip the header

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This commit is contained in:
Wim Taymans 2020-12-02 17:01:22 +01:00
parent 3c2ab98a2a
commit 3363544d05
3 changed files with 26 additions and 8 deletions
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16
spa/plugins/bluez5/a2dp-codec-sbc.c
View file

@ -382,6 +382,21 @@ static int codec_encode(void *data,
return res;
}
static int codec_start_decode (void *data,
const void *src, size_t src_size, uint16_t *seqnum, uint32_t *timestamp)
{
const struct rtp_header *header = src;
size_t header_size = sizeof(struct rtp_header) + sizeof(struct rtp_payload);
spa_return_val_if_fail (src_size > header_size, -EINVAL);
if (seqnum)
*seqnum = ntohs(header->sequence_number);
if (timestamp)
*timestamp = ntohl(header->timestamp);
return header_size;
}
static int codec_decode(void *data,
const void *src, size_t src_size,
void *dst, size_t dst_size,
@ -408,6 +423,7 @@ struct a2dp_codec a2dp_codec_sbc = {
.get_num_blocks = codec_get_num_blocks,
.start_encode = codec_start_encode,
.encode = codec_encode,
.start_decode = codec_start_decode,
.decode = codec_decode,
.reduce_bitpool = codec_reduce_bitpool,
.increase_bitpool = codec_increase_bitpool,

2
spa/plugins/bluez5/a2dp-codecs.h
View file

@ -342,6 +342,8 @@ struct a2dp_codec {
void *dst, size_t dst_size,
size_t *dst_out);
int (*start_decode) (void *data,
const void *src, size_t src_size, uint16_t *seqnum, uint32_t *timestamp);
int (*decode) (void *data,
const void *src, size_t src_size,
void *dst, size_t dst_size,

16
spa/plugins/bluez5/a2dp-source.c
View file

@ -345,21 +345,21 @@ again:
static int32_t decode_data(struct impl *this, uint8_t *src, uint32_t src_size,
uint8_t *dst, uint32_t dst_size)
{
const uint32_t header_size = sizeof(struct rtp_header) + sizeof(struct rtp_payload);
ssize_t processed;
size_t written, avail;
/* skip the header */
spa_return_val_if_fail (src_size > header_size, -EINVAL);
src += header_size;
src_size -= header_size;
if ((processed = this->codec->start_decode(this->codec_data,
src, src_size, NULL, NULL)) < 0)
return processed;
src += processed;
src_size -= processed;
/* decode */
avail = dst_size;
while (src_size > 0) {
processed = this->codec->decode(this->codec_data,
src, src_size, dst, avail, &written);
if (processed <= 0)
if ((processed = this->codec->decode(this->codec_data,
src, src_size, dst, avail, &written)) <= 0)
return processed;
/* update source and dest pointers */