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libspark/record.cpp: user configurable buffer sizes

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Origin commit data
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Branch: master
Commit: 450fc1966a
Author: martii <you@example.com>
Date: 2012-07-21 (Sat, 21 Jul 2012)


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No further description and justification available within origin commit message!

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This commit was generated by Migit
This commit is contained in:
martii
2012-07-21 16:32:00 +02:00
parent 7299337887
commit 3081c61771
2 changed files with 60 additions and 12 deletions
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61
libspark/record.cpp
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@@ -3,6 +3,9 @@
#include <malloc.h>
#include <unistd.h>
#include <sys/types.h>
#ifdef MARTII
#include <sys/prctl.h>
#endif
#include <inttypes.h>
#include <cstdio>
#include <cstring>
@@ -22,13 +25,23 @@ void *execute_record_thread(void *c)
return NULL;
}
#ifdef MARTII
cRecord::cRecord(int /*num*/, int bs_dmx, int bs)
#else
cRecord::cRecord(int /*num*/)
#endif
{
lt_info("%s\n", __func__);
dmx = NULL;
record_thread_running = false;
file_fd = -1;
exit_flag = RECORD_STOPPED;
#ifdef MARTII
bufsize = bs;
bufsize_dmx = bs_dmx;
failureCallback = NULL;
failureData = NULL;
#endif
}
cRecord::~cRecord()
@@ -53,11 +66,6 @@ void cRecord::Close(void)
}
#endif
#ifdef MARTII
#define TS_SIZE 188
#define READSIZE (100 * 188 * 1024)
#define BUFSIZE READSIZE
#endif
bool cRecord::Start(int fd, unsigned short vpid, unsigned short * apids, int numpids)
{
lt_info("%s: fd %d, vpid 0x%03x\n", __func__, fd, vpid);
@@ -67,7 +75,7 @@ bool cRecord::Start(int fd, unsigned short vpid, unsigned short * apids, int num
dmx = new cDemux(1);
#ifdef MARTII
dmx->Open(DMX_TP_CHANNEL, NULL, READSIZE);
dmx->Open(DMX_TP_CHANNEL, NULL, bufsize_dmx);
#else
dmx->Open(DMX_TP_CHANNEL, NULL, 512*1024);
#endif
@@ -180,7 +188,13 @@ bool cRecord::AddPid(unsigned short pid)
void cRecord::RecordThread()
{
lt_info("%s: begin\n", __func__);
#ifndef MARTII
#ifdef MARTII
char threadname[17];
strncpy(threadname, "RecordThread", sizeof(threadname));
threadname[16] = 0;
prctl (PR_SET_NAME, (unsigned long)&threadname);
int readsize = bufsize/16;
#else
#define BUFSIZE (1 << 20) /* 1MB */
#define READSIZE (BUFSIZE / 16)
#endif
@@ -190,11 +204,21 @@ void cRecord::RecordThread()
uint8_t *buf;
struct aiocb a;
#ifdef MARTII
buf = (uint8_t *)malloc(bufsize);
#else
buf = (uint8_t *)malloc(BUFSIZE);
#endif
if (!buf)
{
exit_flag = RECORD_FAILED_MEMORY;
lt_info("%s: unable to allocate buffer! (out of memory)\n", __func__);
#ifdef MARTII
if (failureCallback)
failureCallback(failureData);
lt_info("%s: end\n", __func__);
pthread_exit(NULL);
#endif
}
int val = fcntl(file_fd, F_GETFL);
@@ -207,27 +231,36 @@ void cRecord::RecordThread()
dmx->Start();
#ifdef MARTII
int dmxfd = dmx->getFD();
fcntl(dmxfd, F_SETFL, fcntl(dmxfd, F_GETFL) | O_NONBLOCK);
int overflow_count = 0;
#endif
bool overflow = false;
while (exit_flag == RECORD_RUNNING)
{
#ifdef MARTII
if (buf_pos < bufsize)
#else
if (buf_pos < BUFSIZE)
#endif
{
#ifdef MARTII
if (overflow_count) {
lt_info("%s: Overflow cleared after %d iterations\n", __func__, overflow_count);
overflow_count = 0;
}
#endif
int toread = bufsize - buf_pos;
if (toread > readsize)
toread = readsize;
r = dmx->Read(buf + buf_pos, toread, 50);
lt_debug("%s: buf_pos %6d r %6d / %6d\n", __func__,
buf_pos, (int)r, bufsize - buf_pos);
#else
int toread = BUFSIZE - buf_pos;
if (toread > READSIZE)
toread = READSIZE;
r = dmx->Read(buf + buf_pos, toread, 50);
lt_debug("%s: buf_pos %6d r %6d / %6d\n", __func__,
buf_pos, (int)r, BUFSIZE - buf_pos);
#endif
if (r < 0)
{
if (errno != EAGAIN && (errno != EOVERFLOW || !overflow))
@@ -264,7 +297,7 @@ void cRecord::RecordThread()
if (r == EINPROGRESS)
{
#ifdef MARTII
lt_debug("%s: aio in progress, free: %d\n", __func__, BUFSIZE - buf_pos);
lt_debug("%s: aio in progress, free: %d\n", __func__, bufsize - buf_pos);
#else
lt_debug("%s: aio in progress...\n", __func__);
if (overflow) /* rate-limit the message */
@@ -290,7 +323,7 @@ void cRecord::RecordThread()
}
#ifdef MARTII
else
lt_debug("%s: aio_return = %d, free: %d\n", __func__, r, BUFSIZE - buf_pos);
lt_debug("%s: aio_return = %d, free: %d\n", __func__, r, bufsize - buf_pos);
#else
lt_debug("%s: buf_pos %6d w %6d\n", __func__, buf_pos, (int)queued);
#endif
@@ -362,6 +395,10 @@ void cRecord::RecordThread()
printf("[stream2file]: pthreads exit code: %i, dir: '%s', filename: '%s' myfilename: '%s'\n", exit_flag, s.dir, s.filename, myfilename);
#endif
#ifdef MARTII
if ((exit_flag != RECORD_STOPPED) && failureCallback)
failureCallback(failureData);
#endif
lt_info("%s: end\n", __func__);
pthread_exit(NULL);
}