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libtriple: improve cPlayback performance

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avoid unnecessary memcpy in read_mpeg(), significantly improving performance
This commit is contained in:
Stefan Seyfried
2012-01-15 19:55:10 +01:00
parent e83b77d0e5
commit 2ba4fe17c7
1 changed files with 3 additions and 10 deletions
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13
libtriple/playback_td.cpp
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@@ -1167,11 +1167,6 @@ ssize_t cPlayback::read_mpeg()
if (count + pesPacketLen >= pesbuf_pos)
{
lt_debug("buffer len: %ld, pesPacketLen: %d :-(\n", pesbuf_pos - count, pesPacketLen);
if (count != 0)
{
memmove(pesbuf, ppes, pesbuf_pos - count);
pesbuf_pos -= count;
}
break;
}
@@ -1179,8 +1174,6 @@ ssize_t cPlayback::read_mpeg()
if ((tsPacksCount + 1) * 188 > INBUF_SIZE - inbuf_pos)
{
lt_info("not enough size in inbuf (needed %d, got %d)\n", (tsPacksCount + 1) * 188, INBUF_SIZE - inbuf_pos);
memmove(pesbuf, ppes, pesbuf_pos - count);
pesbuf_pos -= count;
break;
}
@@ -1223,10 +1216,10 @@ ssize_t cPlayback::read_mpeg()
}
} //if (av)
memmove(pesbuf, ppes + pesPacketLen, pesbuf_pos - count - pesPacketLen);
pesbuf_pos -= count + pesPacketLen;
count = 0; /* we shifted everything to the start of the buffer => offset == 0 */
count += pesPacketLen;
}
memmove(pesbuf, pesbuf + count, pesbuf_pos - count);
pesbuf_pos -= count;
return ret;
}