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Basic audio packet parsing code.

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irungentoo 2014-11-09 20:21:57 -05:00
parent bbbeecbaa0
commit 5715a94061
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GPG Key ID: 10349DC9BED89E98
1 changed files with 49 additions and 6 deletions
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55
toxav/group.c
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@ -80,7 +80,9 @@ static void terminate_queue(Group_JitterBuffer *q)
free(q);
}
static void queue(Group_JitterBuffer *q, Group_Audio_Packet *pk)
/* Return 0 if packet was queued, -1 if it wasn't.
*/
static int queue(Group_JitterBuffer *q, Group_Audio_Packet *pk)
{
uint16_t sequnum = pk->sequnum;
@ -91,16 +93,18 @@ static void queue(Group_JitterBuffer *q, Group_Audio_Packet *pk)
q->bottom = sequnum;
q->queue[num] = pk;
q->top = sequnum + 1;
return;
return 0;
}
if (q->queue[num])
return;
return -1;
q->queue[num] = pk;
if ((sequnum - q->bottom) >= (q->top - q->bottom))
q->top = sequnum + 1;
return 0;
}
/* success is 0 when there is nothing to dequeue, 1 when there's a good packet, 2 when there's a lost packet */
@ -136,6 +140,8 @@ typedef struct {
OpusEncoder *audio_encoder;
unsigned int audio_channels, audio_sample_rate, audio_bitrate;
uint16_t audio_sequnum;
} Group_AV;
typedef struct {
@ -214,13 +220,27 @@ static void group_av_peer_delete(void *object, int groupnumber, int friendgroupn
static int handle_group_audio_packet(void *object, int groupnumber, int friendgroupnumber, void *peer_object,
const uint8_t *packet, uint16_t length)
{
if (!peer_object || !object)
if (!peer_object || !object || length <= sizeof(uint16_t))
return -1;
Group_Peer_AV *peer_av = peer_object;
//TODO: parse packet into Group_Audio_Packet
//queue(peer_av->buffer, Group_Audio_Packet *pk)
Group_Audio_Packet *pk = calloc(1, sizeof(Group_Audio_Packet) + (length - sizeof(uint16_t)));
if (!pk)
return -1;
uint16_t sequnum;
memcpy(&sequnum, packet, sizeof(sequnum));
pk->sequnum = ntohs(sequnum);
pk->length = length - sizeof(uint16_t);
memcpy(pk->data, packet + sizeof(uint16_t), length - sizeof(uint16_t));
if (queue(peer_av->buffer, pk) == -1) {
free(pk);
return -1;
}
return 0;
}
@ -264,4 +284,27 @@ int add_av_groupchat(Group_Chats *g_c)
return groupnumber;
}
/* Send an encoded audio packet to the group chat.
*
* return 0 on success.
* return -1 on failure.
*/
static int send_audio_packet(Group_Chats *g_c, int groupnumber, uint8_t *packet, uint16_t length)
{
if (!length)
return -1;
Group_AV *group_av = group_get_object(g_c, groupnumber);
uint8_t data[1 + sizeof(uint16_t) + length];
data[0] = GROUP_AUDIO_PACKET_ID;
uint16_t sequnum = htons(group_av->audio_sequnum);
memcpy(data + 1, &sequnum, sizeof(sequnum));
memcpy(data + 1 + sizeof(sequnum), packet, length);
if (send_group_lossy_packet(g_c, groupnumber, data, sizeof(data)) == -1)
return -1;
++group_av->audio_sequnum;
return 0;
}