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authorMichael Giacomelli <giac2000@hotmail.com>2009-08-16 02:24:09 +0000
committerMichael Giacomelli <giac2000@hotmail.com>2009-08-16 02:24:09 +0000
commit415546921b9640b7718e9553ce96be6698f0f830 (patch)
tree4e7612f85fd21237c0d24a4796edafe8c65b4ed4
parentc74319b2f409cc384093002296654b310892b59f (diff)
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Make the IMDCT temporary working buffer a local variable instead of keeping one for each channel. Saves 4KB of RAM.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22339 a1c6a512-1295-4272-9138-f99709370657
-rw-r--r--apps/codecs/libatrac/atrac3.c9
-rw-r--r--apps/codecs/libatrac/atrac3.h1
2 files changed, 5 insertions, 5 deletions
diff --git a/apps/codecs/libatrac/atrac3.c b/apps/codecs/libatrac/atrac3.c
index e134998dfd..2e4af2963d 100644
--- a/apps/codecs/libatrac/atrac3.c
+++ b/apps/codecs/libatrac/atrac3.c
@@ -665,17 +665,18 @@ static int decodeChannelSoundUnit (GetBitContext *gb, channel_unit *pSnd, int32_
if (lastTonal >= 0)
numBands = FFMAX((lastTonal + 256) >> 8, numBands);
-
+
/* Reconstruct time domain samples. */
for (band=0; band<4; band++) {
+ int32_t IMDCT_buf[1024];
/* Perform the IMDCT step without overlapping. */
if (band <= numBands) {
- IMLT(&(pSnd->spectrum[band*256]), pSnd->IMDCT_buf, band&1);
+ IMLT(&(pSnd->spectrum[band*256]), IMDCT_buf, band&1);
} else
- memset(pSnd->IMDCT_buf, 0, 512 * sizeof(int32_t));
+ memset(IMDCT_buf, 0, 512 * sizeof(int32_t));
/* gain compensation and overlapping */
- gainCompensateAndOverlap (pSnd->IMDCT_buf, &(pSnd->prevFrame[band*256]), &(pOut[band*256]),
+ gainCompensateAndOverlap (IMDCT_buf, &(pSnd->prevFrame[band*256]), &(pOut[band*256]),
&((pSnd->gainBlock[1 - (pSnd->gcBlkSwitch)]).gBlock[band]),
&((pSnd->gainBlock[pSnd->gcBlkSwitch]).gBlock[band]));
}
diff --git a/apps/codecs/libatrac/atrac3.h b/apps/codecs/libatrac/atrac3.h
index f81fc0a734..dbbafef34f 100644
--- a/apps/codecs/libatrac/atrac3.h
+++ b/apps/codecs/libatrac/atrac3.h
@@ -27,7 +27,6 @@ typedef struct {
gain_block gainBlock[2];
int32_t spectrum[1024] __attribute__((aligned(16)));
- int32_t IMDCT_buf[1024] __attribute__((aligned(16)));
int32_t delayBuf1[46]; ///<qmf delay buffers
int32_t delayBuf2[46];