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Move the data around when the ring buffer is resized so that the empty 

messages are between the tosave and toget indexes.
This commit is contained in:
Jeremy Shaw 2003-12-12 05:55:26 +00:00 committed by Alexandre Julliard
parent 17b9837af4
commit f7cae99969
3 changed files with 39 additions and 0 deletions
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13
dlls/winmm/winealsa/audio.c
View File

@ -717,9 +717,22 @@ static int ALSA_AddRingMessage(ALSA_MSG_RING* omr, enum win_wm_message msg, DWOR
EnterCriticalSection(&omr->msg_crst); EnterCriticalSection(&omr->msg_crst);
if ((omr->msg_toget == ((omr->msg_tosave + 1) % omr->ring_buffer_size))) if ((omr->msg_toget == ((omr->msg_tosave + 1) % omr->ring_buffer_size)))
{ {
int old_ring_buffer_size = omr->ring_buffer_size;
omr->ring_buffer_size += ALSA_RING_BUFFER_INCREMENT; omr->ring_buffer_size += ALSA_RING_BUFFER_INCREMENT;
TRACE("omr->ring_buffer_size=%d\n",omr->ring_buffer_size); TRACE("omr->ring_buffer_size=%d\n",omr->ring_buffer_size);
omr->messages = HeapReAlloc(GetProcessHeap(),0,omr->messages, omr->ring_buffer_size * sizeof(ALSA_MSG)); omr->messages = HeapReAlloc(GetProcessHeap(),0,omr->messages, omr->ring_buffer_size * sizeof(ALSA_MSG));
/* Now we need to rearrange the ring buffer so that the new
buffers just allocated are in between omr->msg_tosave and
omr->msg_toget.
*/
if (omr->msg_tosave < omr->msg_toget)
{
memmove(&(omr->messages[omr->msg_toget + ALSA_RING_BUFFER_INCREMENT]),
&(omr->messages[omr->msg_toget]),
sizeof(ALSA_MSG)*(old_ring_buffer_size - omr->msg_toget)
);
omr->msg_toget += ALSA_RING_BUFFER_INCREMENT;
}
} }
if (wait) if (wait)
{ {

13
dlls/winmm/winenas/audio.c
View File

@ -454,9 +454,22 @@ static int NAS_AddRingMessage(MSG_RING* mr, enum win_wm_message msg, DWORD param
EnterCriticalSection(&mr->msg_crst); EnterCriticalSection(&mr->msg_crst);
if ((mr->msg_toget == ((mr->msg_tosave + 1) % mr->ring_buffer_size))) if ((mr->msg_toget == ((mr->msg_tosave + 1) % mr->ring_buffer_size)))
{ {
int old_ring_buffer_size = mr->ring_buffer_size;
mr->ring_buffer_size += NAS_RING_BUFFER_INCREMENT; mr->ring_buffer_size += NAS_RING_BUFFER_INCREMENT;
TRACE("omr->ring_buffer_size=%d\n",mr->ring_buffer_size); TRACE("omr->ring_buffer_size=%d\n",mr->ring_buffer_size);
mr->messages = HeapReAlloc(GetProcessHeap(),0,mr->messages, mr->ring_buffer_size * sizeof(RING_MSG)); mr->messages = HeapReAlloc(GetProcessHeap(),0,mr->messages, mr->ring_buffer_size * sizeof(RING_MSG));
/* Now we need to rearrange the ring buffer so that the new
buffers just allocated are in between mr->msg_tosave and
mr->msg_toget.
*/
if (mr->msg_tosave < mr->msg_toget)
{
memmove(&(mr->messages[mr->msg_toget + NAS_RING_BUFFER_INCREMENT]),
&(mr->messages[mr->msg_toget]),
sizeof(RING_MSG)*(old_ring_buffer_size - mr->msg_toget)
);
mr->msg_toget += NAS_RING_BUFFER_INCREMENT;
}
} }
if (wait) if (wait)
{ {

13
dlls/winmm/wineoss/audio.c
View File

@ -909,9 +909,22 @@ static int OSS_AddRingMessage(OSS_MSG_RING* omr, enum win_wm_message msg, DWORD
EnterCriticalSection(&omr->msg_crst); EnterCriticalSection(&omr->msg_crst);
if ((omr->msg_toget == ((omr->msg_tosave + 1) % omr->ring_buffer_size))) if ((omr->msg_toget == ((omr->msg_tosave + 1) % omr->ring_buffer_size)))
{ {
int old_ring_buffer_size = omr->ring_buffer_size;
omr->ring_buffer_size += OSS_RING_BUFFER_INCREMENT; omr->ring_buffer_size += OSS_RING_BUFFER_INCREMENT;
TRACE("omr->ring_buffer_size=%d\n",omr->ring_buffer_size); TRACE("omr->ring_buffer_size=%d\n",omr->ring_buffer_size);
omr->messages = HeapReAlloc(GetProcessHeap(),0,omr->messages, omr->ring_buffer_size * sizeof(OSS_MSG)); omr->messages = HeapReAlloc(GetProcessHeap(),0,omr->messages, omr->ring_buffer_size * sizeof(OSS_MSG));
/* Now we need to rearrange the ring buffer so that the new
buffers just allocated are in between omr->msg_tosave and
omr->msg_toget.
*/
if (omr->msg_tosave < omr->msg_toget)
{
memmove(&(omr->messages[omr->msg_toget + OSS_RING_BUFFER_INCREMENT]),
&(omr->messages[omr->msg_toget]),
sizeof(OSS_MSG)*(old_ring_buffer_size - omr->msg_toget)
);
omr->msg_toget += OSS_RING_BUFFER_INCREMENT;
}
} }
if (wait) if (wait)
{ {