C++ (Cpp) a2dp_source_setup_media_headerの例

コード例 #1

ファイル: a2dp_source.c プロジェクト: notmikeb/btstack

int a2dp_source_stream_send_media_payload(uint16_t a2dp_cid, uint8_t local_seid, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames, uint8_t marker){
    avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, &a2dp_source_context);
    if (!stream_endpoint) {
        log_error("A2DP source: no stream_endpoint with seid %d", local_seid);
        return 0;
    }
    if (a2dp_source_context.avdtp_cid != a2dp_cid){
        log_error("A2DP source: a2dp cid 0x%02x not known, expected 0x%02x", a2dp_cid, a2dp_source_context.avdtp_cid);
        return 0;
    }

    if (stream_endpoint->l2cap_media_cid == 0){
        log_error("A2DP source: no media connection for seid %d", local_seid);
        return 0;
    } 

    int size = l2cap_get_remote_mtu_for_local_cid(stream_endpoint->l2cap_media_cid);
    int offset = 0;

    l2cap_reserve_packet_buffer();
    uint8_t * media_packet = l2cap_get_outgoing_buffer();
    //int size = l2cap_get_remote_mtu_for_local_cid(stream_endpoint->l2cap_media_cid);
    a2dp_source_setup_media_header(media_packet, size, &offset, marker, stream_endpoint->sequence_number);
    a2dp_source_copy_media_payload(media_packet, size, &offset, storage, num_bytes_to_copy, num_frames);
    stream_endpoint->sequence_number++;
    l2cap_send_prepared(stream_endpoint->l2cap_media_cid, offset);
    return size;
}

コード例 #2

ファイル: avdtp_source_test.c プロジェクト: bittercrow/btstack

static int avdtp_source_stream_send_media_payload(uint8_t local_seid, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames, uint8_t marker){
    avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, &a2dp_source_context);
    if (!stream_endpoint) {
        log_error("no stream_endpoint found for seid %d", local_seid);
        return 0;
    }

    if (stream_endpoint->l2cap_media_cid == 0){
        log_error("no media cid found for seid %d", local_seid);
        return 0;
    }        

    int size = l2cap_get_remote_mtu_for_local_cid(stream_endpoint->l2cap_media_cid);
    int offset = 0;

    // HACK / PTS requests ERTM although we did not offer it in L2CAP Information Request. Withouth ERTM support, default MTU of 48 will be used, but that's to
    // small for a 44.1kHz/16/8/Stereo/bitpool 53 sbc frame of 119 bytes (+ media info)
    size = 0x290;

    l2cap_reserve_packet_buffer();
    uint8_t * media_packet = l2cap_get_outgoing_buffer();
    //int size = l2cap_get_remote_mtu_for_local_cid(stream_endpoint->l2cap_media_cid);
    a2dp_source_setup_media_header(media_packet, size, &offset, marker, stream_endpoint->sequence_number);
    a2dp_source_copy_media_payload(media_packet, size, &offset, storage, num_bytes_to_copy, num_frames);
    stream_endpoint->sequence_number++;
    l2cap_send_prepared(stream_endpoint->l2cap_media_cid, offset);
    return size;
}