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Now using twice the buffer reserve in cTransfer if the primary DVB card is an unmodified version with only 2MB of SDRAM

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This commit is contained in:
Klaus Schmidinger
2005-02-12 15:54:06 +01:00
parent a481a5200c
commit 3b871f8bb6
4 changed files with 26 additions and 4 deletions
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13
transfer.c
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@@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: transfer.c 1.26 2005/02/12 13:51:21 kls Exp $
* $Id: transfer.c 1.27 2005/02/12 15:54:06 kls Exp $
*/
#include "transfer.h"
@@ -54,14 +54,21 @@ void cTransfer::Receive(uchar *Data, int Length)
}
}
#define FW_NEEDS_BUFFER_RESERVE_FOR_AC3
#ifdef FW_NEEDS_BUFFER_RESERVE_FOR_AC3
//XXX This is a very ugly hack to allow cDvbOsd to reduce the buffer
//XXX requirements in cTransfer if it detects a 4MB full featured DVB card.
bool DvbCardWith4MBofSDRAM = false;
#endif
void cTransfer::Action(void)
{
int PollTimeouts = 0;
uchar *p = NULL;
int Result = 0;
#define FW_NEEDS_BUFFER_RESERVE_FOR_AC3
#ifdef FW_NEEDS_BUFFER_RESERVE_FOR_AC3
bool GotBufferReserve = false;
int RequiredBufferReserve = KILOBYTE(DvbCardWith4MBofSDRAM ? 288 : 576);
#endif
active = true;
while (active) {
@@ -74,7 +81,7 @@ void cTransfer::Action(void)
//XXX audio is mostly to early in comparison to video).
//XXX To resolve this, the remuxer or PlayPes() should synchronize
//XXX audio with the video frames. 2004/09/09 Werner
if (ringBuffer->Available() < 3 * KILOBYTE(192) / 2) { // used to be MAXFRAMESIZE, but the HDTV value of KILOBYTE(512) is way too much here
if (ringBuffer->Available() < RequiredBufferReserve) { // used to be MAXFRAMESIZE, but the HDTV value of KILOBYTE(512) is way too much here
cCondWait::SleepMs(20); // allow the buffer to collect some reserve
continue;
}