static BOOL rdpsnd_server_close(RdpsndServerContext* context)
{
int pos;
BOOL status;
wStream* s = context->priv->rdpsnd_pdu;
if (context->selected_client_format < 0)
return FALSE;
if (context->priv->out_pending_frames > 0)
{
if (!rdpsnd_server_send_audio_pdu(context))
return FALSE;
}
context->selected_client_format = -1;
Stream_Write_UINT8(s, SNDC_CLOSE);
Stream_Write_UINT8(s, 0);
Stream_Seek_UINT16(s);
pos = Stream_GetPosition(s);
Stream_SetPosition(s, 2);
Stream_Write_UINT16(s, pos - 4);
Stream_SetPosition(s, pos);
status = WTSVirtualChannelWrite(context->priv->ChannelHandle, (PCHAR) Stream_Buffer(s), Stream_GetPosition(s), NULL);
Stream_SetPosition(s, 0);
return status;
}
static BOOL rdpsnd_server_send_samples(RdpsndServerContext* context, const void* buf, int nframes)
{
int cframes;
int cframesize;
if (context->selected_client_format < 0)
return FALSE;
while (nframes > 0)
{
cframes = MIN(nframes, context->priv->out_frames - context->priv->out_pending_frames);
cframesize = cframes * context->priv->src_bytes_per_frame;
CopyMemory(context->priv->out_buffer +
(context->priv->out_pending_frames * context->priv->src_bytes_per_frame), buf, cframesize);
buf = (BYTE*) buf + cframesize;
nframes -= cframes;
context->priv->out_pending_frames += cframes;
if (context->priv->out_pending_frames >= context->priv->out_frames)
{
if (!rdpsnd_server_send_audio_pdu(context))
return FALSE;
}
}
return TRUE;
}
static BOOL rdpsnd_server_send_samples(rdpsnd_server_context* context, const void* buf, int nframes)
{
int cframes;
int cframesize;
rdpsnd_server* rdpsnd = (rdpsnd_server*) context;
if (rdpsnd->context.selected_client_format < 0)
return FALSE;
while (nframes > 0)
{
cframes = MIN(nframes, rdpsnd->out_frames - rdpsnd->out_pending_frames);
cframesize = cframes * rdpsnd->src_bytes_per_frame;
memcpy(rdpsnd->out_buffer + (rdpsnd->out_pending_frames * rdpsnd->src_bytes_per_frame), buf, cframesize);
buf = (BYTE*) buf + cframesize;
nframes -= cframes;
rdpsnd->out_pending_frames += cframes;
if (rdpsnd->out_pending_frames >= rdpsnd->out_frames)
{
if (!rdpsnd_server_send_audio_pdu(rdpsnd))
return FALSE;
}
}
return TRUE;
}
static BOOL rdpsnd_server_close(rdpsnd_server_context* context)
{
rdpsnd_server* rdpsnd = (rdpsnd_server*) context;
STREAM* s = rdpsnd->rdpsnd_pdu;
if (rdpsnd->context.selected_client_format < 0)
return FALSE;
if (rdpsnd->out_pending_frames > 0)
{
if (!rdpsnd_server_send_audio_pdu(rdpsnd))
return FALSE;
}
rdpsnd->context.selected_client_format = -1;
RDPSND_PDU_INIT(s, SNDC_CLOSE);
RDPSND_PDU_FINISH(s);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpsnd_server_close(RdpsndServerContext* context)
{
int pos;
BOOL status;
ULONG written;
wStream* s = context->priv->rdpsnd_pdu;
UINT error = CHANNEL_RC_OK;
EnterCriticalSection(&context->priv->lock);
if (context->priv->out_pending_frames > 0)
{
if (context->selected_client_format < 0)
{
WLog_ERR(TAG, "Pending audio frame exists while no format selected.");
error = ERROR_INVALID_DATA;
}
else if ((error = rdpsnd_server_send_audio_pdu(context, 0)))
{
WLog_ERR(TAG, "rdpsnd_server_send_audio_pdu failed with error %lu", error);
}
}
LeaveCriticalSection(&context->priv->lock);
if (error)
return error;
context->selected_client_format = -1;
Stream_Write_UINT8(s, SNDC_CLOSE);
Stream_Write_UINT8(s, 0);
Stream_Seek_UINT16(s);
pos = Stream_GetPosition(s);
Stream_SetPosition(s, 2);
Stream_Write_UINT16(s, pos - 4);
Stream_SetPosition(s, pos);
status = WTSVirtualChannelWrite(context->priv->ChannelHandle, (PCHAR) Stream_Buffer(s), Stream_GetPosition(s), &written);
Stream_SetPosition(s, 0);
return status ? CHANNEL_RC_OK : ERROR_INTERNAL_ERROR;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT rdpsnd_server_send_samples(RdpsndServerContext* context, const void* buf, int nframes, UINT16 wTimestamp)
{
int cframes;
int cframesize;
UINT error = CHANNEL_RC_OK;
EnterCriticalSection(&context->priv->lock);
if (context->selected_client_format < 0)
{
/* It's possible while format negotiation has not been done */
WLog_WARN(TAG, "Drop samples because client format has not been negotiated.");
error = ERROR_NOT_READY;
goto out;
}
while (nframes > 0)
{
cframes = MIN(nframes, context->priv->out_frames - context->priv->out_pending_frames);
cframesize = cframes * context->priv->src_bytes_per_frame;
CopyMemory(context->priv->out_buffer +
(context->priv->out_pending_frames * context->priv->src_bytes_per_frame), buf, cframesize);
buf = (BYTE*) buf + cframesize;
nframes -= cframes;
context->priv->out_pending_frames += cframes;
if (context->priv->out_pending_frames >= context->priv->out_frames)
{
if ((error = rdpsnd_server_send_audio_pdu(context, wTimestamp)))
{
WLog_ERR(TAG, "rdpsnd_server_send_audio_pdu failed with error %lu", error);
break;
}
}
}
out:
LeaveCriticalSection(&context->priv->lock);
return error;
}